Creo Parametric 7.0 Step-By-Step Guide

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Creo Parametric 7.0

Step-By-Step Guide

CADFolks

© Copyright 2020 by CADFolks This book may not be duplicated in any way without the express written consent of the publisher, except in the form of brief excerpts or quotations for the purpose of review. The information contained herein is for the personal use of the reader and may not be incorporated in any commercial programs, other books, database, or any kind of software without written consent of the publisher. Making copies of this book or any portion for purpose other than your own is a violation of copyright laws. Limit of Liability/Disclaimer of Warranty: The author and publisher make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. The advice and strategies contained herein may not be suitable for every situation. Neither the publisher nor the author shall be liable for damages arising here from. Trademarks: All brand names and product names used in this book are trademarks, registered trademarks, or trade names of their respective holders. The author and publisher are not associated with any product or vendor mentioned in this book.

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Contents Introduction ……………………………………………………………………………….…...…...…. i Topics covered in this book ………………………………………….……………………...……... ii Chapter No 1: Getting Started with Creo Parametric 7.0 …….…….…….…………. 1

Introduction to Creo Parametric 7.0 ……………………………………………...…………………….… 1 Environments in Creo Parametric 7.0 ………………………………………………….………….……... 1 Part Environment ………………………………………………….……………………...………… 1 Assembly Environment ………………………..…………………………………………………… 2 Drawing Environment ……………………………………………………………………………… 2 Sheetmetal Environment ……………………………………………………………………………. 2 Parametric Modeling in Creo Parametric …………………………...………………………..….….….... 2 Associativity in Creo Parametric ……………………………………………………………………....… 3 File Types in Creo Parametric ………………………………………………………………...……….… 4 Starting Creo Parametric 7.0 ………………………………………………………………..…...………. 4 Creo Parametric User Interface………………………………………………….………….…..…………4 Quick Access Toolbar ………………………………………………………………………………. 5 Graphics Toolbar …………………………………………………………………………………… 9 Creating Working Directory ………………………………..………………………………...………… 10 Ribbon ……………………………………………………………………………..…………………… 11 Part Environment ………………………………………………………….……………………………. 12 Sketch Tab ……………………………………………………………………………………….... 12 Model Tab …………………………………………………………………………………….…… 12 Analysis Tab ………………………………………………………………………...……….……. 13 View Tab ……………………………………………………………………………….......…..…. 13 Assembly Environment ………………………………………………………………………....….…... 13 Sheet Metal Environment ………………………………………………………………………....……. 13 Drawing Environment …………………………………………………………………………......….... 13 Layout Tab ………………………………………………………………………...…………….… 13 Table Tab ………………………………………………………………………………………..… 13 Model Tree ……………………………………………………………...…………………...……….… 14 Changing Background Color ………………………………………………………………..……...….. 14

CREO PARAMETRIC 7.0 Step-By-Step Guide

Mouse Functions ………………………………………………………………………………......…… 16 Left Mouse button (LMB/MB1) …………………………………………………....………......… 16 Middle Mouse button (MMB/MB2) ………………………………………………….......….....… 18 Right Mouse button (RMB/MB3) …………………………………………….…………….......… 18 Some of the Important Shortcut keys ………………………………….………………………..……… 19 Questions ………………………………………………………………………..……………..……….. 20

Chapter No 2: Basic Sketching tools ……………………………..………….…..….... 21 Starting a New Sketch file ………...……………...………………………………………….……....….. 21 Starting a New Sketch in Sketching Environment ………………...…………………………….… 21 Starting a New Sketch in Part Environment ………………………..……….………….………… 23 Draw Tools ……………………………………………………………………………………………... 26 The Line tool …………………………………………….………………………………………... 27 Line Chain Tool …………………………………………………………….………...……… 27 Line Tangent Tool ……………………………...……………………………..………....…… 27 The Rectangle tool ………………………………………………………………….…….….…… 28 Corner Rectangle Tool ………………………….…………………………………….....…… 28 Slanted Rectangle Tool ……………………….……………………………...…….....……… 29 Center Rectangle Tool ……………………….………………………………………….…… 29 Parallelogram ………………………………….………………………………...…….…...… 29 The Circle tool ……………………………………………………………………………………. 29 Center and Point Tool ……….………….……………………………………………….…… 29 Concentric Tool ………………….…….………...……………………………....…...……… 30 3 Point Tool …………………………..………………………………………..…...…...…… 30 3 Tangent Tool ………………..………………………………………...…………….…....… 31 The Arc tool ………………………………………...…………………………………….………. 32 3-Point/Tangent End Tool …………………………………………………………....…....…. 32 Center and Ends Tool ……………………………………………….………....…….......…… 33 3 Tangent Tool ……………………………………………………….…………...………...…. 33 Concentric Tool …………………………………...………………………………………...… 34 Conic Tool …………………………………………………………………………....…..…… 35 ii

CREO PARAMETRIC 7.0 Step-By-Step Guide

The Ellipse tool …………………………………………………………………………………… 35 The Axis Ends Ellipse Tool ………………………………………………………………....… 35 The Center and Axis Ellipse Tool ………………………………………………….…......…… 36 The Spline tool …………………………………………………………………………….……… 36 The Point tool …………………....…………………………………………………….…..……… 36 The Centerline Drop-Down ………........………………………………………………..…...…… 37 Centerline tool …………………………..…………………………………………..….…....… 38 Centerline Tangent tool ………………………..……………………………………….…..….. 38 Dimensioning ……………………………………………………………...……………………...….… 39 Weak Dimensions ………………………………………………………………………...….…… 39 Applying dimensions to a Sketch using Normal tool …………………………………..……....… 42 Linear Dimensions …………………………………………………………………………….. 43 Diameter Dimensions …………………………………………………………………...…...… 44 Angular Dimensions ……………………………………………………………………….….. 44 Applying Diametric Dimension to the Sketch of Revolve Features …………………………….… 45 Applying Dimensions to a Sketch Using Perimeter Tool ……………………….…………..….…. 47 Applying Dimensions to a Sketch Using Baseline Tool ……………………….…………..….…... 47 Applying Dimensions to a Sketch Using Reference Tool ……………………………….………... 49 Modifying the Dimensions ………………………………………………………………………..…… 49 Resolve Sketch ……………………………………………………………………………..……..……. 51 Undo ……………………………………………………………………………………..…..……. 51 Delete ………………………………………………………………………………………...…… 51 Dim > Ref ………………………………………………………………………………..….……. 52 Explain ………………………………………………………………………………...…….……. 53 Examples ………………………………………………………………………………………….……. 54 Example 1 ………………………………………………………………………………………… 54 Example 2 ………………………………………………………………………………………… 60 Example 3 ………………………………………………………………………………………… 63 Questions ……………………………………………………………………………………….………. 70 Exercises ………………………………………………………………………………………….….… 70 Exercise 1 ………………….…………………………………………………………........……… 70 iii

CREO PARAMETRIC 7.0 Step-By-Step Guide

Exercise 2………………..………………………………………………………………..…...…... 71 Exercise 3……………..…………………………………………………………………...….....… 71

Chapter No 3: Advance Sketching & Editing tools ..……………………………..... 73

The Fillet tool ……………………………………………………………………………..….…..…...... 73 Circular Fillet Tool ………………………………………………………………..…..…..……… 73 Circular Trim Fillet Tool …………………………………………………………………….…… 74 Elliptical Fillet Tool ……………………………………………………………………...….….… 75 Elliptical Trim Fillet Tool …………………………………………………………….…..…….… 75 The Chamfer tool ……………………………………………………………………………...….….… 76 Chamfer Tool …………………………………………………………………………...………… 76 Chamfer Trim Tool ………………………………………………………………………......…… 76 Text tool ………………………………………………………………………………………...……… 77 Offset tool ………………………………………………………………………………...…….……… 78 Single Radio Button ………………………………………………………………...…..………… 78 Chain Radio Button ……………………………………………………………..………………… 78 Loop Radio Button …………………………………………………………...…………………… 79 Thicken tool ………………………………………………………………………………………….… 79 Project tool …………………………………………………………………………...………………… 80 Project Using the Single Radio Button …………………………………………………………… 80 Project Using the Chain Radio Button ………………………………….………………………… 80 Project Using the Loop Radio Button …………………………………………………..........…… 81 The Coordinate System ………………………………………………………………………........…… 82 The Palette tool ………………………………………………………………………………………… 83 Constraints ……………………………………………………………………………...……………… 86 Vertical Constraint …………………………………………………………...…………………… 86 Horizontal Constraint ………………………………………………………………………...…… 86 Perpendicular Constraint ……………………………………………………………………..…… 86 Tangent Constraint ……………………………………………………………………………...… 86 Mid-point Constraint ……………………………………………………………………………… 88 Coincident Constraint …………………………………………………………………………..… 89

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Symmetric Constraint ……………………………………………………………………..……… 89 Equal Constraint ……………………………………………………………………………..….… 90 Parallel Constraint ……………………………………………………………………….….…..… 91 Turn ON/OFF Dimensions and Constraints ……………………………………………………..…...… 91 Construction Mode ……………………………………………………………………………….…..… 92 Editing tools …………………………………………………………………………………….……… 93 Modify ………………………………………………………………………………………..…… 93 Delete Segment ………………………………………………………………...………….....…… 93 Corner ……………………………………………………………………………………......…… 93 Mirror …………………………………………………………………………………..…......……94 Rotate Resize ……………………………………………………………………...………..…..… 95 Divide ……………………………………………………………………………………...……… 96 Examples …………………………………………………………………………………….…..…...… 97 Example 1 ………………………………………………………………………………..…......… 97 Example 2 ……………………………………………………………………………………..… 105 Example 3 ……………………………………………………………………….………...…..… 110 Questions ……………………………………………………………………………………........…… 117 Exercises ………………………………………………………………………………….….......…… 117 Exercise 1 ………………………………………………………………………………….…..… 117 Exercise 2 ……………………………………………………………………………………...… 117 Exercise 3 ………………………………………………………………………………….…..… 118

Chapter No 4: Sketch Based Features ..……………………………………..….….. 119

Extrude Tool ………………………………………………………………………………..………… 119 Extrude as solid ……………………………………………………………..…………………… 119 Extrude as surface ………………………………………………………...…...………………… 119 Depth Value drop-down ……………………………………………………..……...…………… 119 Depth Value Edit box ………………………………………………………………….………… 122 Changing depth direction ……………………………………………………….…….………… 122 Remove Material ……………………………………………………………...………….……… 122 Thicken Sketch ………………………………………………………………….……..…....…… 122 Changing material direction…………………………………………………………………… 122 v

CREO PARAMETRIC 7.0 Step-By-Step Guide

Creating a Solid Model using the Extrude Tool …………………………………………….………... 122 Using the Extrude Tool for Removing Material ………………………………………………...……. 124 Using the Extrude tool for Creating Surface Feature …………………………………………..…...… 126 Using the Extrude tool for Creating Thicken Feature ………………………………………………… 126 Revolve Tool ……………………………………………………………………………….…...….…. 127 Revolve the sketch as Solid ……………………………………………………….……....…….. 128 Revolve the sketch as Surface ……………………………………………....…………….…...…129 Using the Revolve tool for Creating Thicken Feature …………………………….………..…… 130 Removing material by using Revolve tool ……………………………………....………….…… 131 Examples ………………………………………………………………………….……………….….. 133 Example 1 …………………………………………………………………...……………..….… 133 Example 2 ……………………………………………………………………………...…..….… 136 Questions ……………………………………………………………….…………….……….….…… 143 Exercises …………………………………………………………………………..………………..… 143 Exercise 1 ……………………………………………………………………………..…….…… 143 Exercise 2 ………………………………………………………………………………..….…… 144 Exercise 3 …………………………………………………………………………………..….… 144

Chapter No 5: Datum and Advanced Features ………………………………….... 145

Datum ………………………………………………………………………………………….……… 145 Datum Plane ………………………………………………………………………………….….….… 145 Offset Plane ………………………………………………………………….……….………..… 146 Through Method ………………………………………………….…………………...………… 148 Angle Plane ……………………………………………………….…………………….……..… 149 Tangent Plane …………………………………………………………………………….……… 151 Parallel Plane …………………………………………………………………………….……… 152 Datum Axis ……………………………………………………….……………………………...…… 153 Normal Axis ………………………………………………………………….……….…….…… 154 Through Axis ………………………………………………………………………….………… 156 Datum Axis passing through two points ……………………………….………………….…..… 157 Tangent Axis ………………………………………………………………………….……….… 158 Datum Point ……………………………………………………….…………………………..……… 159 vi

CREO PARAMETRIC 7.0 Step-By-Step Guide

Round Feature ………………………………………………………………………………...….…… 160 Round Tool ……………………………………………………….…………………………...… 161 Auto Round Tool ………………………………………………………………..……….……… 165 Chamfer ………………………………………….…………………………………………...….….… 166 Edge Chamfer …………………………………………………………………...……….……… 166 Corner Chamfer ………………………………………………………….……………………… 171 Shell Feature ………………………………….…………………………………..……………...…… 172 Rib Feature ………………………………….…………………………………...……………….…… 173 Trajectory Ribs ………………………………………………………...…………...…….……… 173 Profile Rib ………………………………….……………………………..………………...…… 177 Examples ………………………………….………………………………...………………………… 180 Example 1 ……………………………………………………………..….…………..….……… 180 Example 2 ……………..………………………………………………………………....……… 188 Questions ……………………………………………………………………………………....……… 197 Exercises ………………………………………………………………………………...…….……… 197 Exercise 1 ……………………………………..……………………………….…………..…..… 197 Exercise 2 ……………………………………………………………………………………...… 198

Chapter No 6: Hole Features and Pattern Geometry ……………………….….…. 199

Hole …………………………….…………………………………………………………………...… 199 Creating Simple Hole

…………………………….……………………………………...….… 200

Create a Linear Hole ……………………………………………………….….……… 200 Create a Radial Hole ………………………………………………….……….……… 202 Create a Diameter Hole ….………………………………………………...….….…… 204 Coaxial Hole ………………………………………………………………….….…… 206 Creating Standard Hole ………………………………………………………………….….…… 207 Creating Tapered Hole …………………………….………………………………….……….… 211 Mirror ……….………………………………………………………………………………………… 213 Mirror a Feature/Features of a model ………………………………...……………….………… 213 Mirror the Whole model ………………………………………………………...…….………… 214 Pattern Feature …………………………….…………………………………………………......…… 214 vii

CREO PARAMETRIC 7.0 Step-By-Step Guide

Dimension Patterns ……………………………………………………………………………… 215 Direction Pattern …………………………….………………………………………………...… 219 Axis Pattern …………………………….……………………………………………….….……. 222 Fill Patterns …………………………….…………………………………………………….….. 223 Table Patterns …………………………….……………………………………………............… 226 Curve Patterns ……………………………………………………………………………........… 229 Point Patterns …………………………….……………………………………………..……..… 230 Examples …………………………….…………………………………………………………..….… 232 Example 1 ………………………….…………………………………………………………..... 232 Example 2 ……………………………………………………………………………...……...… 241 Questions …………………………….…………………………………………………………..….… 257 Exercises ……………………………………………………………………………………...….…… 257 Exercise 1 ………………………………………………………………………...…….……...… 257 Exercise 2 …………………………………………………………………………...….……...… 258

Chapter No 7: Sweep and Blend Features ……………………………………...….. 259

Sweep tool ………………………….…………………………………………………………………. 259 Using the Sweep tool for Removing Material ………….……………………………….……………. 262 Helical Sweep ………….…………………………………………………………………………..…. 264 Using the Helical Sweep tool for Removing Material ………..…………………………………. 267 Swept Blend ………….…………………………………………………………………………….…. 271 Blend Tool ………….…………………………………………………………………………...……. 274 Editing Blend Feature ………….………………………………………………………………..……. 278 Rotational Blend ………….……………………………………………………………………..……. 282 Creating Rotation Blend Features using Previously Creates Sketches ….………………………. 285 Examples ………….……………………………………………………………………………..……. 287 Example 1 …….……………………………………………………………………….……...…. 287 Example 2 ………….…….……………………………………………………...............………. 296 Questions ………….………………………………………………………………………….….……. 303 Exercises ………….………………………………………………………………………………..…. 303 Exercise 1 ………….…………………………………………………………….…….…...……. 303

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Chapter No 8: Creating Assemblies …………………………………….…..….….. 305

Starting an Assembly ………….…………………………………………………………………...…. 305 Inserting Components ………….……………………………………………………………..………. 306 Fixing the First component ………….……………………………………………………..…………. 308 Inserting Second Component ………….………………………………………………………...……. 309 Moving and Rotating Component ………….…………………………………………………………. 310 Applying Constraints ………….…………………………………………………………………...…. 312 Automatic Constraint ………….………………………………………………………...………. 312 Distance Constraint ………….……………………………………………………………..……. 313 Angle Offset Constraint ………….……………………………………………………...………. 314 Parallel Constraint ………….……………………………………………………………………. 314 Coincident Constraint ………….…………………………………………………………..……. 314 Normal Constraint ………….……………………………………………………………………. 314 Coplanar Constraint ………….……………………………………………………………….…. 315 Centered Constraint ………….……………………………………………………………….…. 315 Tangent Constraint ………….…………………………………………………….…………..…. 316 Fix Constraint ………….…………………………………………………………………..……. 316 Default Constraint ………….……………………………………………………………………. 317 Exploded View ………….………………………………………………………………………….…. 318 Example ………….……………………………………………………………………………...……. 321 Example 1 ………….……………………………………………………………………………. 321 Example 2 ………….……………………………………………………………………………. 329 Questions ………….……………………………………………………………………………..……. 342 Exercises ………….………………………………………………………………………………..…. 342 Exercise 1………….……………………………………………………………………...………. 342

Chapter No 9: Drawings & Views …………………………………………..….….. 345 Starting a Drawing ………….……………………………………………………………………...…. 345 Generating the General View ………….………………………………………………...……………. 347 To change Orientation of Drawing View (View Type) …………………………..…………..…. 348 To change Visible Area …………………………………………………………………………. 349 ix

CREO PARAMETRIC 7.0 Step-By-Step Guide

To change Scale Value ……………………………………………………………………..……. 350 To change View Display …………………………………………………………………….…... 350 To change Location of Drawing View …………………………………………………….….…. 351 To change Alignment of drawing view ……………………………………………………....…. 351 To Place an Exploded View in the Drawing Sheet ………………………………………...…………. 351 Drawing Models ………………………………………………………………………………………. 352 Projection View ………………………………………………………………………..…………..…. 353 Detailed View …………………………………………………………………………………...……. 354 Auxiliary View ………….……………………………………………………………………….……. 356 Creating New sheet in drawing ………….……………………………………………………....……. 357 Sheet Setup ………….………………………………………………………………………….……... 357 Applying Dimensions to the Drawing View ………….………………………………...…….………. 358 Lock View Movement ………….……………………………………………………………….……. 360 Examples ………….……………………………………………………………………………….….. 361 Example 1 ……….……………………………………………………………………………..... 361 Example 2 ………….………………………………………………………………………..…... 368 Questions ………….…………………………………………………………………………….....…. 376 Exercises ………….…………………………………………………………………………….….…. 376 Exercise 1 ………….…………………………………………………………………….………. 376 Exercise 2 ………….………………………………………………………………….…………. 377 Exercise 3 ………….………………………………………………………………….…………. 377

Chapter No 10: Sheet Metal Design ……………………………….………..….….. 379 Starting a Sheet Metal Part File ………….………………………………………………………...…. 379 To Start a Sheet Metal Part File with Other Template ………….………………………………….…. 381 Planar Wall ………….…………………………………………………………………….……..……. 381 Extrude Tool ………….……………………………………………………………………....……..... 383 Flat Wall ………….………………………………………………………………………………...…. 384 Sheet Metal Properties ………….……………………………………………………………….……. 386 Flange Wall ………….………………………………………………………………………….….…. 388 Boundary Blend ………….……………………………………………………………….………..…. 391 Offset Wall ………….………………………………………………………………….…………..…. 393 x

CREO PARAMETRIC 7.0 Step-By-Step Guide

Flat Pattern ………….……………………………………………………………….……………..…. 394 Examples ………….……………………………………………………………………….……….…. 396 Example 1 ………….……………………………………………………………………..…..…. 396 Example 2 ………….……………………………………………………………………..…..…. 407 Questions ………….………………………………………………………………………………..…. 414

Chapter No 11: Surface Design ………………………………..……………….….. 415 Extrude ………….……………………………………………………………………………….……. 415 Revolve ………….……………………………………………………………………………………. 417 Boundary Blend ………….……………………………………………………………………...……. 418 Fill ………….…………………………………………………………………………………………. 420 Offset ………….………………………………………………………………………………………. 422 Trim ………….…………………………………………………………………………………..……. 423 Merge ………….………………………………………………………………………………...……. 425 Thicken ………….……………………………………………………………………………………. 426 Intersect ………….……………………………………………………………………………………. 428 Mirror ………….…………………………………………………………………………………...…. 428 Project ………….………………………………………………………………………………..……. 429 Extend ………….………………………………………………………………………………..……. 431 Freestyle ………….…………………………………………………………………………...………. 432 Examples ………….……………………………………………………………………………..……. 435 Example 1 ………….………………………………………………………………..………..…. 435 Example 2 ………….……………………………………………………………………..…..…. 440 Questions ………….………………………………………………………………………………..…. 452 Exercises ………….……………………………………………………………………………..……. 452 Exercise 1 ………….………………………………………………………………..……...……. 452

Index ……………………………………………………………..……............................................ 453

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Introduction Welcome to the Creo Parametric 7.0 Step-by-Step Guide book. This book is written to assist students, designers, and engineering professionals. It covers the important features and functionalities of Creo Parametric using relevant examples and exercises. This book is written for new users, who can use it as a self-study resource to learn Creo Parametric. In addition, it can also be used as a reference for experienced users. The focus of this book is part modeling, assembly modeling, drawings, sheet metal, and surface design.

Topics covered in this Book: Chapter 1, “Getting Started with Creo Parametric 7.0”, introduces Creo Parametric. The user interface and terminology are discussed in this chapter. Chapter 2, “Basic Sketching tools”, explores the basic sketch tools in Creo Parametric. You will also learn to create parametric sketches. Chapter 3, “Advance Sketching & Editing Tools”, teaches you advance sketch tools and various editing tools used while creating complex sketches in the Sketch Environment. Chapter 4, “Sketch Based Features”, teaches you to create basic 3D geometry using the Extrude and Revolve tools. Chapter 5, “Datum and Advanced Features”, explores the tools used for creating various Datum and advance features. Chapter 6, “Hole Features and Pattern Geometry”, explores the tools to create Holes, patterned and mirrored geometry. Chapter 7, “Sweep and Blend Features”, teaches you to create basic and complex features by sweeping a profile along a path. Chapter 8, “Creating Assemblies”, explains you to create assemblies using various assembly tools in the Assembly Environment. Chapter 9, “Drawings and Views”, covers how to create 2D drawings from 3D parts and assemblies in the Drawing Environment. Chapter 10, “Sheet Metal Design”, covers how to create sheet metal parts and flat patterns in the Sheetmetal Environment. Chapter 11, “Surface Design”, covers how to create complex shapes using surface design tools. XIII

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Chapter 01: Getting Started with Creo Parametric 7.0 Introduction to Creo Parametric 7.0

Creo Parametric 7.0 is a parametric and feature-based system that allows you to create 3D parts, assemblies, and 2D drawings. The design process in Creo is shown below.

Environments in Creo Parametric 7.0

Creo Parametric offers various types of environments to perform different types of operations. For Example, Creo Parametric provides you with the Part Environment to design a part, Assembly environment to perform assemblies, similarly there are many other environments to perform advance operations such as, manufacturing process, process diagrams, drawings, and so on. However in this book we cover basic environments like Part, Assembly, Drawing, Sheet Metal, and Surfacing. A brief introduction to these environments is given next.

Part Environment The Part environment provides you the tools to create parametric solid models. You can start a document in this environment by clicking the New icon and selecting Type > Part in the New dialog box. To create solid models, you must draw parametric sketches in the Sketch environment and then convert them into solids.

Creo Parametric 7.0 - Step-By-Step Guide

However, you can add some additional features to the solid model, which do not require sketches.

Assembly Environment

The Assembly environment (click Type > Assembly from the New dialog box) has tools to combine individual parts in an assembly. There are two ways to create an assembly. The first way is to create individual parts and assemble them in the Assembly environment, known as Bottom-up assembly design. The second way is to start an assembly file and create individual parts in it, known as Top-down assembly design.

Drawing Environment

The Drawing environment (click Type > Drawing from the New dialog box) has tools to create 2D drawings, which can be used for the manufacturing process. There are two methods to create drawings. The first method is to generate the standard views of a 3D component or assembly. The second method is to sketch the drawing manually.

Sheetmetal Environment

The Sheetmetal environment (click Type > Part and click Sub-type > Sheetmetal from the New dialog box) has tools to create sheet metal models. You can create a sheetmetal model either by building features in a systematic manner or by converting a part geometry in to sheet metal.

Parametric Modeling in Creo Parametric

In Creo Parametric, parameters, dimensions, or constraints control everything. For example, if you want to change the position and size of the hole shown in figure, you need to change the dimension and constraint that controls its position, as shown.

GETTING STARTED WITH CREO PARAMETRIC 7.0

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Creo Parametric 7.0 - Step-By-Step Guide

Similarly, if you want to change the radius of the Round feature applied to the below given model, you can simply double-click over its dimensions (radius value of round feature) one-by-one and enter the required values in the edit box. Alternatively, you can directly edit the respective feature from the Model Tree which is discussed further in this book.

Associativity in Creo Parametric

The other big advantage of Creo Parametric is the associativity between parts, assemblies, and drawing. When you make changes to a part, the changes will take place in in any assembly that it is a part of. In addition, the 2D drawing will update automatically.

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Creo Parametric 7.0 - Step-By-Step Guide

File Types in Creo Parametric

Creo Parametric offers three main file types: .prt: This type of file has a geometry of individual part. The files created in Part ans Sheetmetal environments will have this extension. .asm: This type of file is an assembly of one or more parts. In fact, it is a link of one or more parts. .drw: The files created in the drawing environment have this extension.

Starting Creo Parametric 7.0

To start Creo Parametric 7.0, double-click the Creo Parametric 7.0 icon on your Desktop. Alternatively, click Start > PTC > Creo Parametric 7.0 as shown.

Creo Parametric User interface

While starting Creo Parametric for the first time, the Creo Parametric 7.0 screen will be displayed, as shown.

GETTING STARTED WITH CREO PARAMETRIC 7.0

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Creo Parametric 7.0 - Step-By-Step Guide

Various components of the user interface are:

Quick Access Toolbar

The Quick Access Toolbar is located at the top of the Creo Parametric window or above Ribbon. It provides quick access to some commonly used tools such as New, Open, Save, Undo, Redo, Regenerate, and so on. To add/remove these tools from the Quick Access Toolbar, you can select/deselect their respective check boxes, as shown.

To add more commands/tools to the Quick Access Toolbar, click on the More Commands option, from the drop-down menu. Next click on the required tool and then click on the button, the selected tool get visible in the Design Part area of the Creo Parametric Options dialog box and also in the Quick Access Toolbar. And to remove any tool, click on the required tool in the Design Part area and then click on the button. Next, click on the OK button to exit the dialog box.

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Creo Parametric 7.0 - Step-By-Step Guide

Some of the commonly used tools in Quick Access Toolbar are discussed next.

New

The New tool is used to display New dialog box with different Types and Sub-type radio button to enter in various environments in Creo Parametric.  Click on the New button from the Quick Access Toolbar to display New dialog box. GETTING STARTED WITH CREO PARAMETRIC 7.0

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Creo Parametric 7.0 - Step-By-Step Guide

 Next select the required radio button from the Type area and Sub-type area.  Enter the required file name in the Name edit box.  Press the OK button to continue. Alternatively press the MMB (Middle Mouse Button) to continue.

Open

The Open button is used to display File Open dialog box to open existing Creo files in the system.

 Click on the New button from the Quick Access Toolbar to display File Open dialog box.

 Next browse to the required object file in the required folder in File Open dialog box.  Select the required file and click on the Open button to open it.

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Creo Parametric 7.0 - Step-By-Step Guide

Save

The Save button is used to save the model created in various Creo Parametric environments in the desired folder.  After creating any model, click on the Save button to display the Save Object dialog box.  Next you can simple click on the OK button to save the file in the selected folder.

Note: When you click on the Save button, the Save Object dialog box with the previously selected

working director get displayed. If you click on the OK button the object gets saved in that folder. You can browse to any other folder/location and save the object there, if required.

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Creo Parametric 7.0 - Step-By-Step Guide

Graphics Toolbar

The Graphics Toolbar by default is located at the top of the drawing/graphics area. It can be also positioned in the left, bottom, and right of the graphics area or Status bar. It can be also turned off. It contains the tools to quick access to some commonly used View tab tools.

File Menu

The File Menu appears when you click on the File button located at the top left corner of the window. The File tab provides options for opening, creating, saving, renaming, backing up files, and printing. You can see a list of recently opened documents in the Recent Files menu. Before using any File tool, or creating a file make sure you have set your working directory to the folder where you wish to save files on which you are working.

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Creo Parametric 7.0 - Step-By-Step Guide

Creating Working Directory

Before start working in Creo Parametric, you need to start a working directory in which you can directly save all the Creo files created by you.  Click on the File > Manage Session > Select Working Directory to display Select Working Directory dialog box.  In the dialog box, browse to C:\Users\Creo Parametric\ folder. Note that, you can directly click on Users to reach the respective location, as shown.  Create the folder before setting the working directory, if the folder does not exist.

 Click on the Creo Parametric folder and click on the OK button to set it as the working directory.

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Creo Parametric 7.0 - Step-By-Step Guide

 Next create folders like Ch2, Ch3, Ch4 and so on, to save Part files, Examples, and Exercises of the chapters in their respective folders, after creating them.

Note: Before creating the part files, examples, and exercises of any chaper you need to first set their respective working directories.

Note: You can directly display the Select Working Directory dialog box from the initial screen of the Creo Parametric by clicking on the Select Working Directory button from the Ribbon, as shown.

Ribbon

Ribbon is located at the top of the window. It contains tools organized in the set of various tabs. On each tab, the related tools/buttons are grouped. When you click on a tab, various groups appears. These groups have different tools. GETTING STARTED WITH CREO PARAMETRIC 7.0

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Creo Parametric 7.0 - Step-By-Step Guide

Various ribbons available in different environments are given next.

Part Environment

The Part environment consists of various tabs with different tools used for creating different part files. Below is the initial screen of the Creo Parametric with Part environment.

Sketch Tab

The Sketch tab has tools to create and edit sketches. This tab is activated while creating sketches.

Model Tab

This tab has tools to create and edit solid/surface geometry.

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Creo Parametric 7.0 - Step-By-Step Guide

Analysis Tab

This tab has tools to measure the physical properties of the geometry.

View Tab

This tab has tools to zoom, pan, rotate, or change the views of a 3D model.

Assembly Environment

The Assembly tab has tools to create components or insert existing components into an assembly.

Sheetmetal Environment

This environment has the tools to create sheetmetal parts.

Drawing Environment

The Drawing environment consists of various tabs with different tools used for generating drawing files

Layout Tab

This tab has the tools to generate and edit standard views of a 3D geometry.

Table Tab

This tab has the tools to insert tables, balloons and other data into the drawings

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Creo Parametric 7.0 - Step-By-Step Guide

Model Tree

The Model Tree is a type of Navigator window that stores and display all the features/operations in a sequence features that you have used while working in any file. By default it displays in the left side of different environments in Creo Parametric (in part model, assembly, drawing, and so on). You can select the required option from the shortcut menu display after right-clicking over any required operation to modify or edit it. You can hide the Model Tree to increase the size of drawing area by clicking on the available on the bottom left corner of the Creo Parametric window.

button

Changing Background Color

To change background color of Creo Parametric graphic window. 1. 2. 3. 4.

Click on the File button to display File shortcut menu, as shown. Click on the Options to display Creo Parametric Options dialog box. Click on the System Colors option and then click on the Graphics category. Next click on the Background drop-down and select the required color from the color library displayed.

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Creo Parametric 7.0 - Step-By-Step Guide

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Creo Parametric 7.0 - Step-By-Step Guide

For better clarity of drawings and dimensions you can apply White color as the background color. To apply White color as the background color.  Click on the System Apperance > System Colors > Black on white from the Creo Parametric Options dialog box to set White as the background color, as shown.

Note: You can directly display the Creo Parametric Options dialog box with System Colors category opened from the initial screen of the Creo Parametric by clicking on the System Colors from the Ribbon.

button

Mouse Functions

Various functions of the mouse buttons are:

Left Mouse button / Mouse Button 1 (LMB / MB1)

Double-click the left mouse button (LMB) on an object, to display the details related to the object. Using this details, you can edit the parameters of the objects.  Double-click on the object to display its details/dimensions, as shown.

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Creo Parametric 7.0 - Step-By-Step Guide

 Double-click on any dimension value and enter new value in its edit box, as shown.  Press the Enter key from keyboard or MMB (Middle Mouse Button) to apply changes.  Similarly, you can change other dimensions also.

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Creo Parametric 7.0 - Step-By-Step Guide

Middle Mouse button / Mouse Button 2 (MMB / MB2)

Press and hold the Shift key and the MMB (middle mouse button), drag the mouse to pan/move the view.  Press and hold the Ctrl key and MMB (middle mouse button), drag the mouse in upward and downward direction to Zoom In/Zoom Out the view.  Press and hold the MMB to use it as Rotate tool for rotating view.  Press the MMB to exit from any active tool. 

Note: Pressing the MMB (middle mouse button) will work same as the other buttons do for applying changes like OK/Enter/Sketch/Apply/ window).

button and so on (in the dialog box or Creo Parametric

Right Mouse button / Mouse Button 3 (RMB / MB3)

Click this button for some interval on an object to display the shortcut menu related to it. Sometime before displaying shortcut menu by pressing the RMB/MB3 on any object. You first need to press LMB (Left Mouse Button) over it to select it.

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Creo Parametric 7.0 - Step-By-Step Guide

The other functions with combination of the MMB (middle mouse button) are:

Some of the Important Shortcut keys Esc F1 Ctrl + O Ctrl + S Ctrl + D Ctrl + N Ctrl + Z Ctrl + Y Ctrl + R

Do multiple tasks as of the MMB (like cancel an operation, deactivate the active tool) To open the Help for the current context To display the File Open dialog box To display the Save Object dialog box To display model in the default view. To display New dialog box Single step Undo operation Single step redo operation Update changes/Repaint

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Questions: 1. 2. 3. 4. 5.

Where is Quick Access Toolbar available in the Graphics area? What is the Model Tree? How can you change the background color of the graphics window? How can you create a working directory? Where is Sketch View button available in the drawing/graphics area?

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Chapter 02: Basic Sketching Tools This chapter covers the methods and tools to create sketches used in the part environment. The tools and methods are discussed in context to the part environment. In Creo, you can create sketches in two environments: Part and Sketch task environment. You will learn to create sketches in both the environments. In Creo, you create a rough sketch, and then apply dimensions and constrains that define its shape and size. The dimensions define the length, size, and angle of a sketch element, whereas constrains define the relations between sketch elements. The topics covered in this chapter are:  Starting a new sketch file  Starting a new sketch file in Sketch environment  Starting a new sketch file in Part environment  Learn sketching tools  Applying dimensions  Modifying dimensions

Starting a New Sketch File

Creating sketches in Creo Parametric is very easy. As discussed, you can create sketches in two environments: Part and Sketch task environment. To start a new sketch file in sketch environment.

Starting a New Sketch File in Sketch Environment

In order to draw a sketch in Sketch environment, you need to follow steps discussed below:  Click on the New dialog box.

button from the Quick Access Toolbar or Data group of Home tab to display New

Alternatively press Ctrl +N key from the keyboard to display New dialog box.  Select the Sketch radio button from the Type area of the New dialog box.  Click in the Name edit box and enter the required part file name in it.  Click on the OK button to enter in the Sketching environment.

Creo Parametric 7.0 - Step - By - Step Guide

 The sketch environment will be displayed with the name at the top, that you have already entered in the Name edit box of the New dialog box.  Now you can create the sketch by using various draw tools, discussed further in this chapter.

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Creo Parametric 7.0 - Step - By - Step Guide

Starting a New Sketch File in Part Environment

In order to draw a sketch in Sketch environment, you need to follow steps discussed below:  Click on the New button from the Quick Access Toolbar or Data group of Home tab.  Select the Part radio button from the Type area and Solid radio button in the Sub-type area of the New dialog box if it is not selected by default.  Enter the required part file name in the Name edit box.  Click on the OK button to display the Part environment as shown.

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Creo Parametric 7.0 - Step - By - Step Guide

 Click on the Sketch button from the Datum group of the Model tab to display the Sketch dialog box.  Click on any of the reference planes located at the center of the graphics window.  The plane that you select will get displayed in the Sketch dialog box, as shown.  Click on the Sketch button from the dialog box to enter in the drawing environment.

Alternatively, press the MMB (Middle Mouse Button) to enter in the sketching environment and click on the Sketch View

button to adjust the selected plane parallel to the screen.

Note: While creating sketch if sometime its orientation gets changed. Then to re-adjust the selected plane parallel to the screen, you can select the Sketch View

Basic Sketching Tools

button from the Graphics toolbar.

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Creo Parametric 7.0 - Step - By - Step Guide

 Using the Line (draw tool) tool you can draw the sketch on the selected plane, as shown.

 Now click on the OK button environment.

from Close group of the Sketch tab to exit from the Sketch

For better clarity of the sketch drawn, you can deselect the check boxes in the Datum Display Filters , and Sketcher Display Filters Spin Center

drop-down, as shown. Also deselect the Csys Display

and

buttons from the Graphics toolbar, as shown.

Note: When you start a new file, if you directly choose the OK button from the New dialog box

displayed then the new sketching environment get displayed with the default template/units as inlbs_part_solid. So, the units for length will be in inch, mass in lb, time in seconds and temperature in Fahrenheit.

To start a Part file with another template To start a new file with any other template.

 Click on the New button from the Quick Access Toolbar to display the New dialog box.  Deselect the Use default template check box, as shown. Basic Sketching Tools

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Creo Parametric 7.0 - Step - By - Step Guide

 Select the OK button from the dialog box, the New File Options dialog box get visible.  The default template inlbs_part_solid is selected in it, select any other template like mmns_part_solid.  Now select the OK button from the New File Options dialog box to start a new file with the selected template.  You can now work in the new file with units millimeter, Newton, and Second.

Draw Tools

Creo provides you with a set of draw tools to create sketches. These tools are available in the Sketching group of the Sketch tab as shown.

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Creo Parametric 7.0 - Step - By - Step Guide

The Line Tool

This is the most commonly tool used for creating a sketch. In Creo, there are two types of tools used for drawing lines, as discussed below:

Line Chain Tool

This tool is used to draw a line while creating sketches. The steps to draw a line using this tool are.  Click on the Line drop-down and then click on the Line Chain option to activate it, as shown above. Alternatively, you can activate the Line Chain tool by pressing the L key.  Click to define the start and endpoints of the line.

 If you draw a horizontal and vertical line, the symbol of the corresponding line gets displayed with it, as shown.  Press the MMB (Middle Mouse Button) to deactivate this tool. Alternatively press the Esc key from the keyboard.

Note: After using any active tool, to deactivate it you can simply press the MMB (Middle Mouse Button) or the Esc key from keyboard.

Line Tangent Tool

This tool is used to create a line tangent between two circles or arcs or both.  To activate this tool, click on the Line drop-down and click on the Line Tangent as shown above.  Click on the two circles, arcs or both; a tangent get created between the selected entities along with all constraint symbols between both, as shown.  Press MMB or Esc key to deactivate the tool. Basic Sketching Tools

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Creo Parametric 7.0 - Step - By - Step Guide

The Rectangle Tool

The Rectangle tool is used to create rectangle which is the combination of four lines. There are four different tools available in the Rectangle drop-down to create four types of rectangles, as discussed one by one.

Corner Rectangle

This tool is used to create a rectangle by defining its corners diagonally.  Click on the Corner Rectangle tool from the Rectangle drop-down as shown above. Alternatively, you can press the R key to activate the Corner Rectangle tool.  Click to define the first corner.  Drag the cursor and click to define the second corner.

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Creo Parametric 7.0 - Step - By - Step Guide

Slanted Rectangle

This tool creates an inclined rectangle.  Choose the Slanted Rectangle tool from the Rectangle dropdown.  Click at points 1 & 2 in the drawing area to define width and inclination angle of the rectangle as shown.  Move the pointer and click anywhere to define the height/width of the rectangle.  All the lines will be perpendicular to each other.

Center Rectangle

This tool is used to create a rectangle by defining two points: Center of the rectangle and its corner.  Click on the Center Rectangle tool from the Rectangle drop-down.  Click anywhere in the drawing area to define the center of the rectangle.  Move the pointer and click again to define the corner point.  All corners of this rectangle are equal length from the centre.

Parallelogram

This command creates a parallelogram by using three points that you specify.  Choose the Parallelogram tool from the Rectangle drop-down  Click at two points in the drawing area to define the width of the parallelogram.  Move the pointer and click anywhere to define the height/length of the parallelogram. The only difference between Slanted Rectangle and Parallelogram is that, in Parallelogram the angle can be changed.

The Circle Tool

This tool is used to draw a circle during drawing a sketch. There are four options available in the Circle drop-down for creating circles.

Center and Point

This is the most common and easiest way to draw a circle.  Click on the Center and Point tool from the Circle drop-down as shown above.  Click anywhere in the drawing area to define the center point for the circle.  Move the cursor upto some distance and again click to define the radius of the circle. .

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Creo Parametric 7.0 - Step - By - Step Guide

Concentric

This tool is used to draw circles, concentric to the previously drawn circle.    

Draw a circle. Select the Concentric tool from the Circle drop-down to activate it. Select the circle recently drawn to display a concentric circle, as shown. Move the cursor upto some distance and click anywhere to place the concentric circle, as shown.

 The tool is still active and you can still create multiple concentric circles, as shown.

 Press the MMB to deactivate the Concentric tool.

3 Point Tool

This tool is used to draw circles by defining three points in the drawing area.    

Click on the 3 Point tool from the Circle drop-down. Click anywhere in the drawing area to define the first point for the circle, as shown. Move the cursor upto some distance and click to define the second point of the circle, as shown. Now move the cursor again to define the third or last point of the circle, as shown.

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Creo Parametric 7.0 - Step - By - Step Guide

3 Tangent Tool

This tool is used to draw circle, tangent to three entities (line/circle/arc).  Click on the 3 Tangent tool from the Circle drop-down.  Click on the first line entity and move the cursor over second entity.  Click on the second entity to display preview of the 3 Tangent circle.

 Now click on the third entity to display a circle which is tangent to all three selected entities.

Similarly, you can draw tangent circle to arc and circle entities also. For Example:

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Creo Parametric 7.0 - Step - By - Step Guide

The Arc Tool

This tool is the used to draw an arc during drawing a sketch. There are five different tools available in the Arc drop-down to create five different types of rectangles, as discussed one by one.

3-Point / Tangent End Tool

This tool is used to draw arc tangent to an existing entity.     

Click on the 3-Point / Tangent End tool from the Arc drop-down as shown above. Click on the end point of the existing entity in the drawing area to define first point, as shown. Move the cursor and click on the end point of another entity to define second point, as shown. Now, move the cursor up to some distance and click, until Tangent symbol get visible, as shown. Press the MMB (Middle Mouse Button), to display tangent arc along with tangent constraint and other constraints.

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Creo Parametric 7.0 - Step - By - Step Guide

Sometimes, if you move the cursor towards left/right or you will not find tangent curve attached with it. Then in that condition, move the cursor up to some distance and click until a (+) sign of arc gets collinear with both of the selected points. Also, a Tangent symbol appears there.

Center and Ends Tool

This tool is used to draw arc by defining its center, start and end point.  Click on the Center and Ends tool from the Arc drop-down.  Click to define the center point of the arc.  Next, move the pointer and you will notice that a circle appears attached to the pointer. This defines the radius of the arc.  Now, click to define the start point of the arc and move the pointer; you will notice that an arc is drawn from the start point.  Once the arc appears the way you want, click to define its end point. A (+) sign appears at the center of the arc.

3 Tangent Tool

This tool is used to draw an arc tangent to three entities.  Click on the 3 Tangent tool from the Arc drop-down.  Click on first line and second line entities one by one.

 Move the cursor over third entity to display an arc entity.  Click on the third line entity to display an arc entity which is tangent to all selected entities.

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Creo Parametric 7.0 - Step - By - Step Guide

Similarly, you can draw tangent arc to arc and circle entities also, as shown.

Concentric Tool

This tool is used to draw a concentric arc by using the center point of the existing drawn circle or arc.  Click on the Concentric tool from the Arc drop-down.  Click at the center point of existing entity to define the center point of the arc, as shown.  Move the cursor upto some distance to display a Construction circle attached with the cursor. This defines the radius of the arc.  Now, click to define the start point of the arc and move the pointer to display an arc attached with the cursor.

 Now click to define its end point to display a concentric arc. A (+) sign appears at the center of the arc. Basic Sketching Tools

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Creo Parametric 7.0 - Step - By - Step Guide

Conic Tool

This tool is used to draw a concentric arc by using the center point of the existing drawn circle or arc.  Click on the Conic tool from the Arc drop-down.  Click twice in the drawing area to define start point and end point of the conic arc.  Move the cursor up to some distance and click to define size of the conic arc. A centreline will be drawn between the two points, as shown. You can also draw the conic arc in different shapes/sizes, as per your requirements, as shown.

The Ellipse Tool

This tool is used to draw an ellipse while drawing a sketch. There are two different tools available in the Ellipse drop-down, as discussed one by one.

Axis Ends Ellipse Tool

This tool is used to draw an ellipse by defining start and end point of the major and minor axis.  Click on the Axis Ends Ellipse tool from the Ellipse drop-down.  Click twice in the drawing area to define start and end point of the major axis of ellipse.  Move the cursor to some distance perpendicularly to define point for the minor axis. The ellipse with major and minor axis will also be drawn.

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Creo Parametric 7.0 - Step - By - Step Guide

Center and Axis Ellipse Tool

This tool is used to draw an ellipse by defining center point, end point of major and minor axis.  Click on the Center and Axis Ellipse tool from the Ellipse drop-down.  Click in the drawing area to define center point for the ellipse.  Next click twice to define end point for major and minor axis. The ellipse with major and minor axis will also be drawn.

The Spline Tool

This tool is used to create a smooth spline curve passing through the points you select.    

Select the Spline tool (select Model > Sketching > Spline). Click to define start points for the spline in the graphics window. Similarly, click to define the other points for creating spline. Press the middle mouse button (MMB) or Esc to deactivate this tool and display the spline created. The points through which the spline passes are called Interpolation points.

The Point Tool

The Point tool is used to create points in the drawing area while sketching. These points are mainly used while dimensioning the vertices after applying fillets.

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Creo Parametric 7.0 - Step - By - Step Guide

Note that after applying fillet to the corners of any entities, the dimensions attached with it either get removed or effected. So, for this Point tool is very useful tool.  Activate the Point (Model > Sketching > Point) tool and then click at different vertices to place points, as shown.

 Activate the Fillet tool and apply the fillets to the corners, the points still remains at their placed locations.

 Activate the Normal tool and select the points placed to place dimensions one by one, as shown. Note that the use of Fillet tool and Normal tool is discussed further in this book.

The Centerline Drop-Down

The options in the Centerline drop-down are used to draw the centerlines in engineering drawings to denote hole centers and lines. There are two tools available in the Centerline drop-down to create centerlines, as discussed one by one.

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Creo Parametric 7.0 - Step - By - Step Guide

Centerline Tool

This tool is used to draw a centerline by defining its start point and end point.  Select the Centerline tool from the Centerline drop-down.  Click in the drawing area to define the start point of the centerline.

 Next click to define the end point of the centerline, a centerline with infinite length get drawn.

 Similarly, you can create more centerlines, as shown.

 Press the MMB (middle mouse button) to deactivate the tool.

Centerline Tangent Tool

This tool is used to draw a centerline tangent to two circle or arc entities by defining its start point and end point.  Select the Centerline tool from the Centerline drop-down.  Click on the first entity (circle) to define the start point of the centerline.

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Creo Parametric 7.0 - Step - By - Step Guide

 Click on the second entity to define the end point of the centerline, a centerline of infinite length tangent to both entities get visible.

 Press the MMB (middle mouse button) to deactivate the tool.

Dimensioning

In Creo Parametric there are different types of tools for applying dimensions to the sketch. Each of them is discussed one by one.

Before applying dimensions to a sketch, you should be known about automatically applied weak dimensions by the system in Creo Parametric.

Weak Dimensions

In Creo, while creating a sketch the system automatically applies dimensions to it. These are the weak dimensions of the sketch that get visible in the light blue color. Similarly, system also apply automatic constraints. To turn off these weak dimensions and constraints.  Draw a sketch and press MMB twice to display weak dimensions and constraints with it, as shown.

Basic Sketching Tools

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Creo Parametric 7.0 - Step - By - Step Guide

   

Click on the File button to display File shortcut menu. Click on the Options to display Creo Parametric Options dialog box. Deselect the Show dimensions and Show constraints checkbox. Next click on the OK button to apply changes.

 Next click on the Yes button from the Creo Parametric Options message box and OK from the Save As window to continue (config.pro file get saved).

Now the dimension that you apply to the sketch will be strong. You can also convert a weak dimension to strong. To convert weak dimensions to strong, follow the steps:  Double-click over the weak dimension and enter any value manually, as shown.  Press the Enter key from keyboard to display the strong dimension, as shown.

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Creo Parametric 7.0 - Step - By - Step Guide

 Alternatively, select any weak dimension to display shortcut, as shown.  Click on the Strong button to display dimension edit box and enter required dimension value in it. Alternatively press the Ctrl+T key after selecting any weak dimension.

 Next press the Enter key or press MMB (Middle Mouse Button) to display strong dimension.  Similarly, edit other dimensions, as shown. You can use the LMB (Left Mouse Button) to move the dimension values and place at required locations, discussed further in this chapter.

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Creo Parametric 7.0 - Step - By - Step Guide

Applying Dimensions to a Sketch Using Dimension Tool

In Creo Parametric, in order to applying dimensions to the sketch drawn in the sketching environment, you can easily apply dimensioning by selecting the Dimension tool from Dimension group of the Sketch tab.

 Click on the Dimension button (Sketch > Dimension > Dimension).  Select two entities one by one.

 Move the cursor up to some distance and place the dimension by pressing the middle mouse button (MMB).  The dimension of the selected entities gets displayed in the dimension edit box.

As the dimensions displayed is in the edit mode, you can simply enter a new value in it, as per your requirements. Alternatively, you can edit it using the Modify tool, discussed further in this chapter.

 Press the ESC button to place the dimension. Similarly place the other dimensions.

To move a placed dimension to a new location:    

After placing dimensions, press the ESC button from keyboard or press MMB. Press and hold the LMB (Left Mouse Button) over the dimension to move. Drag it up to the required distance. Release the LMB to place the moved dimension at new location. Similarly, move and place the other dimension at the required location, as shown.

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Creo Parametric 7.0 - Step - By - Step Guide

In Creo Parametric there are different types of dimensions created using Normal tool:

Linear Dimension

The steps for placing different types of linear dimensions are  To place an aligned dimension, click on the Dimension button and select the line entity, as shown.  Move the cursor up to some distance and press the MMB to display the aligned dimension  Press the MMB again to place the aligned dimension, as shown.

 To place a vertical dimension, select the Dimension button and select the vertical points one by one.  Move the cursor up to some distance and press the MMB to display the vertical dimension. If you need to place a dimension of a vertical line, you can simply select the vertical line and place the dimension up to some distance.

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Creo Parametric 7.0 - Step - By - Step Guide

 To place a horizontal dimension, select the Dimension button and select the horizontal points one by one. Move the cursor up to some distance and press the MMB to place the horizontal dimension.

If you need to place a dimension of a horizontal line, you can simply select the horizontal line and place the dimension up to some distance.

Diameter Dimension

The steps for applying diameter dimensions are.  After activating the Dimension tool, double-click on the circle entity.  Move the cursor upto some distance and press the MMB to display the diametric dimension at that location.  As the dimension displayed is in edit box, you can enter the required diametric dimension value in it.  Again, press the MMB to finally display or place it.

Angular Dimension

The steps for applying angular dimensions are    

After activating the Dimension tool, select the two end points of the arc entity, as shown. Then click over the arc and move the cursor upto some distance. Press the MMB to display the angular dimension and enter the required values, if required. Now, click to place the angular dimension, as shown.

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 Select the dimension to display shortcut menu, as shown.  Click on the Angle

button to display the angular dimension, as shown.

Apply Diametric Dimensions to the Sketch of Revolve Features

The steps for applying diametric dimensions to a sketch of revolve features are.    

Activate the Dimension tool. Select the centerline and then select the sketch entity. Again, select the centerline. Move the cursor up to some distance and click to place the dimension, as shown.

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Creo Parametric 7.0 - Step - By - Step Guide  Similarly apply other diametric dimensions, as shown.

y

Note: In Creo Parametric if the Disp Constr

check box is selected in the Sketcher

Display Filters drop-down of the Graphics toolbar then, while drawing any entity (line, circle, arc etc) if its dimensions reaches the same as of any other entity in that sketch, the system automatically indicates you that the dimensions of the newly created entity reaches the same as of the another one in that sketch, by the Equal symbol, along with the serial number of the entity. Also, the cursor sticks while meeting with any constraints (like Horizontal, Vertical, Collinear and so on) automatically, as shown.

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Applying Dimensions to a Sketch Using Perimeter Tool

The Perimeter tool is used to create a perimeter dimension. The steps to create the perimeter dimensions are.  Select the Perimeter tool (Sketch > Dimension > Perimeter).  You will be suggested to “Select geometry whose total will be governed by the perimeter dimensions” (Check in message box at bottom)  Select the required entity and press MMB.  Now you will be suggested to “Select dimension to be driven by the perimeter dimension”.  Select the dimension of the previously selected entity to display perimeter dimension, as shown.

 Click and using LMB (Left Mouse Button) move the dimension to place it at the proper location, as shown.

Applying Dimensions to a Sketch Using Baseline Tool

In Creo Parametric, with the help of Baseline tool, you can create horizontal and vertical baseline (reference/origin) dimension. With respect to which you can then create dimensions of other entities.  Select the Baseline tool (Sketch > Dimension > Baseline)  Select the point of the sketch and press MMB.  Press the Accept button from the Dim Orientation dialog box to display 0.00 vertical baseline (reference or origin) dimension, as shown.

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 Press the MMB and move the vertical baseline dimension created to place it at proper location, as shown.  Similarly create the horizontal baseline dimension by selecting the Horiz radio button from the Dim Orientation dialog box.

 Now select the Dimension tool from the Dimension group.  Select the horizontal baseline dimension and then select another horizontal entity to generate the vertical baseline dimension.  Press the MMB to place the vertical baseline dimension with respect to the horizontal origin/reference dimension, as shown.

 Similarly create other dimensions, as shown. For generating horizontal baseline dimensions, you need to select the vertical baseline dimension and vertical entities one-by-one. Basic Sketching Tools

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Applying Dimensions to a Sketch Using Reference Tool

The Reference tool is used to create a reference dimension. The steps to create the reference dimensions are.

 Select the Reference tool (Sketch > Dimension > Reference) from the Ribbon.  Select the entity and move the cursor up to some distance.  Press the MMB to place the reference dimension created, as shown.

Modifying the Dimensions The Modify dimensions are.

tool is used to modify the dimension present in a sketch. The steps to modify

 Select all the dimensions of the sketch by dragging a window over it, using LMB (Left Mouse Button).

Alternatively, to select multiple dimensions, press and hold the Ctrl key and select dimensions oneby-one using LMB (Left Mouse Button). Basic Sketching Tools

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 Select the Modify button (Sketch > Editing > Modify) to display Modify Dimensions dialog box with all the dimensions in it, as shown.

 Before changing the dimensions in the dialog box, deselect the Regenerate check box.

Note: If you try to modify the dimensions without deselecting the Regenerate check box then the dimension values get updated each time you enter them in the edit box.

 Click in both dimensions edit boxes and enter different values in it, as shown.

Note: After deselecting the Regenerate check box, as you enter the different values in the dimension edit box, same time the same value gets reflected/applied in the drawing but the sketch or sketch entities remains unchanged, as shown.

Note: When you click in any of the dimension edit boxes in Modify Dimensions dialog box, the same dimension gets highlighted in the blue box in the drawing/graphics area.  After changing all the dimensions, click on the OK button of the dialog box, to update all applied dimensions, as shown. Basic Sketching Tools

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Resolve Sketch

Sometime during applying dimensions or constraints, you might face problems related it which will be displayed in the Resolve Sketch dialog box. This is because while applying dimensions or constraints, some of them conflict with their existing ones. For this, you need to delete some dimensions and constraints, highlighted in the dialog box. All of the conflict dimensions or constraints get displayed in the dialog box. The conflict dimension or constraint that you select in the dialog box get highlighted in the drawing area, as shown.

Undo

Press Undo button to go back to the previous state of the drawing that was before the conflict occurs. For doing so, you can simply press the MMB.

Delete

The Delete button is used to remove/delete any selected constraint or dimension. Press the Delete button from the Resolve Sketch dialog box, after selecting any of the dimension or constraint to be delete. The selected dimension gets deleted, as shown.

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Dim > Ref

On choosing this button the selected dimension gets converted to the reference dimension. This happens while generating another dimension then press the MMB to place it after selecting Dim > Ref button.

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Explain

On choosing this button, you will get the information about the selected dimension or constraint, displayed in the message area at the bottom of the drawing area.

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Examples: Example 1 (Millimetres) In this example, you will create the sketch for the part shown below.

1. Start Creo Parametric 6.0 2. Click on the File > Manage Session > Select Working Directory to display Select Working Directory dialog box. 3. In the dialog box, browse to C:\Users\Creo Parametric\ folder. 4. Click on the Ch2 folder and then click on the OK button to set it as the working directory. Now when you save any part file created in this chapter, it gets automatically saved in Ch2 folder with the name entered by you in the New dialog box. Until you set any other working directory.

5. Now, click on the New ( the New dialog box. Basic Sketching Tools

) button from the Quick Access Toolbar (or from the Data group) to display

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Alternatively, you can display the New dialog box by pressing Ctrl + N key from the keyboard. 6. Select the Sketch radio button in the Type area of the New dialog box, as shown. 7. Enter Ch2_Example01 in the File name edit box, as shown. 8. Click OK from the dialog box to enter in the sketching environment, as shown.

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9. Select the Line > Line Chain tool from the Sketching group of the Sketch tab, as shown. Alternatively, you can click on the Line

button directly to activate the Line tool.

10. Next draw the sketch as shown.

11. Now select the Circle > Circle and Point tool from the Sketching group of the Sketch tab and draw the two circles as shown. 12. Press MMB to exit from the active tool.

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Next you need to apply dimensions to the sketch drawn. To do so, select the Dimension button from the Dimension group of the Sketch tab to display all weak dimensions and constraints of the drawing as shown. Alternatively press the MMB. For this you need to delete some extra dimensions or give some dimensions manually. Note that dimension values may vary.

Note: The weak dimensions will be displayed only, if the Show weak dimensions and Show constraints check boxes are selected in the Creo Parametric Options dialog box.

Sometime while applying dimensions manually if any of the dimensions or constraints conflicts you will get an error message in the Resolve Sketch dialog box. For this select one of the conflicting dimension or constraint from the dialog box and press the Delete button from it. Note that the conflict dimension or constraint that you select in the dialog box get highlighted in the drawing area, as shown.

13. Next you need to modify these dimensions by applying required dimensions. Select One-by-One option from the Select drop-down of the Operations group.

14. Click and drag a window over the sketch using LMB (Left Mouse Button) to select all the dimensions, as shown. All the selected dimensions turn green.

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15. Select Modify tool from the Editing group to display the Modify Dimensions dialog box as shown. All the dimensions will be displayed in the dialog box and you can modify them by entering the required dimensions accordingly. 16. Deselect the Regenerative check box and you can enter the required dimensions in the corresponding dimension edit box in the dialog box. Alternatively, you can use the thumbwheel to modify the dimensions, as shown.

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Note: If you try to modify the dimensions without deselecting the Regenerate check box then the dimension values get updated each time you enter them in the edit box.

17. Note that the dimension edit box that you click in the dialog box, the same dimension gets highlighted in the blue box in the drawing area. 18. Modify all the dimensions, as shown. 19. Click on the OK button from dialog box to apply changes and display drawing with applied dimensions. 20. Arrange the dimensions using LMB (Left Mouse Button) and as shown below.

21. Click on the Save (Ctrl+S) button from the Quick Access Toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier.

Note: While saving the file, the Save Object dialog box with the previously selected working directory get displayed. You can select the required folder to save file in it, if required.

22. Click on the OK button from the Save Object dialog box. The sketch gets saved and click on the Close button from the upper right corner to close it. Alternatively, you can click on the Close

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button (View > Window > Close) to close any file.

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Example 2 In this example, you will create the sketch shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. 3. Select the Sketch radio button in the Type area of the New dialog box and enter Ch2_Example02 in the Name edit box. 4. Click on the OK button from the dialog box to enter in the sketching environment. 5. Click on the Line Chain tool from the Line drop down of the Sketch tab and draw the sketch as shown. 6. Again, select the Center and Point sketch shown below.

tool from the Circle drop down of the Sketch tab and draw the

7. Select the Dimension button from the Dimension group of the Sketch tab to display all the weak/temporary dimensions with some constraints, as shown. Basic Sketching Tools

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8. Now as discussed earlier, apply some dimensions manually and delete the unwanted dimensions as shown. (dimension values may vary)

9. Click at the top left of the sketch and drag the cursor up to right down corner. A window over the sketch get created covering all the dimensions. Which will then results turn all the dimensions green as shown.

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10. Select Modify tool from the Editing group to display the Modify Dimensions dialog box as shown. All the dimensions will be displayed in the dialog box and you can modify them by entering the required dimensions accordingly. 11. Deselect the Regenerative check box and you can enter the required dimensions in the corresponding dimension edit box in the dialog box. Alternatively, you can use the thumbwheel to modify the dimensions. 12. Note that the dimension edit box that you click in the dialog box, the same dimension gets highlighted in the edit box in the drawing area, as shown.

13. Modify all the dimensions, as shown. 14. Click on the OK button from dialog box to apply changes and display drawing with applied dimensions. 15. Arrange the dimensions using LMB (Left Mouse Button) and as shown below. Basic Sketching Tools

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16. Click on the Save (Ctrl+S) button from the Quick Access Toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. 17. Click on the OK button from the Save Object dialog box. The sketch gets saved and click on the Close button from the upper right corner to close it.

Alternatively, you can click on the Close

button (View > Window > Close) to close any file.

Example 3 (Millimetres) In this example, you will create the sketch shown below.

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1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. 3. Select the Part radio button in the Type area of the New dialog box and enter Ch2_Example03 in the Name edit box. 4. Click OK from the dialog box to enter in the sketch environment. Alternatively press the MMB (Middle Mouse Button). 5. Select the Sketch button (Model > Datum > Sketch) from the Ribbon and select the Front plane to draw sketch over it. 6. Press the MMB (Middle Mouse Button) to enter in the sketching environment or adjusting the selected plane parallel to the screen 7. Activate the Circle (Sketch > Sketching > Circle) tool from the Ribbon to draw circle entities. 8. Draw the sketch as shown.

9. Select the Construction Mode button (Sketch > Sketching > Construction Mode) and then activate the Circle tool. 10. Draw a construction circle, as shown. 11. Activate the Dimension tool and apply dimensions to the sketch (dimensions may vary).

12. Select all dimensions and then activate the Modify (Sketch > Editing > Modify) tool from the Ribbon. 13. Deselect the Regenerate checkbox from the Modify Dimensions dialog box and modify all the dimensions, as shown. 14. Click on the OK button from dialog box to apply changes. Basic Sketching Tools

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15. Activate the Centerline tool and draw the centerline, as shown. 16. Activate the Line tool and draw the sketch, as shown.

17. Activate the Symmetric (Sketch > Constrain > Symmetric) tool. 18. Select the centerline and then select the two vertical line entities one by one to apply Symmetric relation between both, as shown.

19. Apply the required dimensions to the recently drawn sketch entities, as shown. Basic Sketching Tools

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20. Activate the Delete Segment remove, as shown.

tool and move the cursor over unwanted entities to

21. Activate the Centerline tool and draw two centerlines at angle 45 degree from the vertical line. 22. Activate the Circle tool and draw a circle of radius 5 at the intersection of construction circle and construction point. 23. Similarly draw another three circles of same radius. Note that while drawing another circle, the system automatically indicates you that the newly created circle entity reaches the same radius dimension as of the previous one, by the “ ” symbol. As the radius of both should be same so you can click and continue.

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24. Now, select the sketched entity and then activate the Mirror tool. 25. Select the centerline to display mirror feature at 90 degrees angle, as shown.

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26. Similarly create two more mirror features of the same. 27. Activate the Delete Segment tool and move the cursor over unwanted entities to remove, as shown.

28. Select the centerlines and construction circle and press the Delete key from the keyboard to display the final sketch.

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29. Click on the Save (Ctrl+S) button from the Quick Access Toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. 30. Click on the OK button from the Save Object dialog box. The sketch gets saved and click on the Close button from the upper right corner to close it.

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Questions: 1. 2. 3. 4. 5. 6. 7. 8.

Which tool is selected to start a new file in Creo Parametric and from where it is selected? Which tool is used to apply dimensions in a sketch? How can we create a tangent arc? List any two sketch constraints in Creo Parametric. How can you apply diametric dimension to a circle or arc? Why Resolve Sketch tool is used and how? How can you apply dimensions to a sketch using Baseline tool? Where the Conic tool is available and for why it is used?

Exercises: Exercise 1

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Exercise 2

Exercise 3

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Exercise 4

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Chapter 03: Advance Sketching & Editing Tools This chapter covers the methods and commands to edit sketches used in the part environment. The commands and methods are discussed in context to the part environment. In Creo, you can edit sketches by using different editing tools available in the Creo environment. You will learn about editing sketches in this chapter. The topics covered in this chapter are:  Fillet  Chamfer  Text  Offset  Thicken  Project  Constraints  Use geometric and dimensional constraint to control the shape and size of a sketch  Learn sketching commands  Learn use of tools that help you in editing sketch

The Fillet Tool

This tool is used to create a fillet or round a sharp corner created by intersection of two lines, arcs, circles, and rectangle or polygon vertices. There are four options available in the Fillet drop-down as shown.

Circular Fillet Tool

This tool is used to create a circular fillet which is tangent to selected entities. • • •

Choose the Circular tool from the Fillet drop-down. Click on the two entities (two lines, two arcs, or a line and an arcs). A fillet tangent to two selected entities get created. The symbol along with two end points of fillet get visible showing its tangency with both entities (If the Show constraint check box is selected in Options window).

Creo Parametric 7.0 - Step-By-Step Guide

•

The radius of the fillet created depends on the location where you click on the entities. Which is also displayed after its creation. To change radius, double click over it and enter new radius value in the edit box displayed.

• • •

The entities are automatically trimmed or extended to meet the end of the new fillet radius. The location of the intersecting entities is shown with dotted lines. The tool is still active. Press the MMB (middle mouse button) to exit from this tool.

Note: The T symbol, dimensions and section vertices will be only displayed, if you have selected their relative check boxes from the Graphics toolbar, as shown.

Circular Trim Fillet Tool

This tool is also used to create a circular fillet which is tangent to selected entities. But the only difference is that after creating a fillet using this tool, the location of the intersecting entities is not shown with dotted lines. Advance Sketching & Editing Tools

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Elliptical Fillet Tool

This tool is used to create an elliptical fillet which will be tangent to selected entities. • • •

Choose the Elliptical tool from the Fillet drop-down. Select the two entities (two lines, two arcs, or a line and an arcs). An elliptical fillet, tangent to two selected entities get created. The points of fillet get visible showing its tangency with both entities.

•

The radius of the fillet created depends on the location where you click on the entities. Which is also displayed after its creation. To change radius, double click over it and enter the new radius value in the edit box displayed. The entities are automatically trimmed or extended to meet the end of the new fillet radius. The location of the intersecting entities is shown with dotted lines. The tool is still active. Press the MMB (middle mouse button) to exit from this tool.

• • •

symbol along with two end

Elliptical Trim Fillet Tool

The working of this tool is almost same as of Elliptical tool, but the only difference is that after creating a fillet using this tool, the location of the intersecting entities is not shown with dotted lines.

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The Chamfer Tool

This tool is used to create a chamfer between two selected entities. There are two options available in the Chamfer drop-down as shown.

Chamfer Tool

This tool is used to create a chamfer between two selected entities. • • • • • • •

Choose the Chamfer tool from the Chamfer drop-down. Click on the two entities (two lines, two arcs, or a line and an arcs). A chamfer between two selected entities get created. The distance & angle of the chamfer created depends on the location where you click on the entities. Which is also displayed after its creation. To change it, double click over it and enter the new value in the edit box displayed. The entities are automatically trimmed or extended to meet the end of the new chamfer. The location of the intersecting entities is shown with dotted lines. The tool is still active. Press the MMB (middle mouse button) to exit from this tool.

Chamfer Trim Tool

This tool is also used to create a chamfer between two selected entities. But the only difference is that after creating a chamfer using this tool, the location of the intersecting entities is not shown with dotted lines.

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Text Tool

Texts are important part of a drawing. You add text to provide additional details, which cannot be done using dimensions and annotations. • • •

Choose the Text tool from the Sketching group of the ribbon. Click anywhere in the drawing area to specify the start point for the text Again, click at some distance in the upwards direction as second point to specify height and orientation of the text. If you want to write text from left to right, then specify second point in upwards direction of the start point, while as click in left side to write text from bottom to top and vice-versa.

•

The Text dialog box will be displayed and enter text in the Text edit box, as shown.

•

The text you entered, will be displayed in the drawing area.

• • •

Select the suitable font in the Font drop-down list. Using the slider bars, adjust the desired Aspect ratio and Slant Angle. Press the MMB (Middle Mouse Button) twice or select the OK button to exit from the Text tool. You can also write text along a curve. To do this, you need to select the required curve, after selecting the “Place along curve” check box, from the Text dialog box. Select the button to change the direction of text along the curve.

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Offset Tool

The Offset tool is used to create a duplicate geometry at a required offset distance from the selected geometry. Click on the Offset tool to display Type dialog box with three radio buttons. The use of these radio buttons is discussed below.

Single Radio Button

The Single radio button is selected to offset a single entity. This option is selected by default. •

Activate the Offset tool and click on the entity to offset.

•

Enter the offset distance value in the edit box displayed, as shown.

•

Click on the entity.

button from the edit box and Close button from the Type dialog box to display offset

Enter the distance value with negative symbol (-) to create offset in opposite direction.

Chain Radio Button

The Chain radio button is selected to offset a chain entity. • • •

Select the Chain radio button. Select any two entities one-by-one. Select the Next option and then the Accept option from the Menu Manager Message box displayed.

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Note that sometime if you directly select the Accept option then offset of only any two entities get displayed. • •

Enter the offset distance value in the edit box displayed. Click on the button from the edit box and Close button from the Type dialog box to display offset entities.

Loop Radio Button

The Loop radio button is selected to offset a loop of entities. • • • •

Select the Loop radio button. Click on any of the entity. Select enter the offset distance value in the edit box display to display offset of whole loop. Click on the button from the edit box and Close button from the Type dialog box to display offset entities.

Thicken Tool

The use of Thicken tool is almost same as that of the Offset tool. The only difference is, it is used to create entities by offsetting an edge or a sketch entity in two sides. The two lines offset either have open, flat, or circular ends. The thicken edge can be a single line, a chain of lines, or a closed loop. You will be prompted Advance Sketching & Editing Tools

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to enter thickness, which is space between two lines. Again, you will be prompted to enter offset in the direction of the arrow for the further of two lines.

Project Tool

The Project tool is used to project entities of any previously created model on the selected sketching plane. • • •

• •

Activate the Sketch tool and select any Datum plane on which you want to project the sketching entities. Press the MMB to enter in the sketching environment. Select the Default Orientation option from the Saved Orientation drop-down to select and view the projected entities properly.

Activate the Project (Sketch > Sketching > Project) tool from the Ribbon to display the Type message box. Now there are three different procedures to do the Project feature.

Project Using the Single Radio Button

The Single radio button is selected by default which helps you in projecting a single entity after selecting it.

Project Using the Chain Radio Button • •

Select the Chain radio button and then select two edges of the model. Select the Accept option from the Menu Manager Message box displayed.

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•

Click on the Yes button from the Convert chain to loop and Close button from the Type message box to display the projected entities on the previously selected sketching plane.

•

Close the sketch and you can now use this sketch for creating 3D model, as shown.

Project Using the Loop Radio Button • • •

Select the Loop radio button and then select two edges of the model. Click on the flat surface of the model. Select the Next option from the Menu Manager Message box to select inner entities in the model. Note that sometime if you directly select the Accept option the outer entities of the model get selected.

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•

Again, select the Accept option from the Menu Manager message box and Close button from the Type message box to display projected entities.

The Coordinate System

The Coordinate System tool is used to create the coordinate system in the Graphic Window. • •

Select the Coordinate System tool (select Sketch > Sketching > Coordinate System). Click at the desired location/point in the drawing area to place the coordinate system attached with the cursor.

•

Press the MMB (middle mouse button) to deactivate the tool. The only difference between Geometric Coordinate system and the Construction Coordinate System is that, the Geometric entities can be referenced outside the Sketcher environment whereas, in

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Construction entities it cannot be referenced. Thus, the Coordinate System tool (Construction) in the Datum group can be used in creating a coordinate system that acts as a reference while dimensioning. The Coordinate System tool is used while creating blend features, in order to align different sections in a blend. The Coordinate System tool in the Datum group can be used to create a coordinate system that will act as a reference for dimensioning. You can dimension the splines using the coordinate system. • • •

Select the Coordinate System (select Sketch > Datum > Coordinate System). Click at the desired location/point in the drawing area to place the coordinate system attached with the cursor. Press the middle mouse button (MMB) to deactivate the tool.

The Palette tool

The Palette tool is selected to create features like stars, profiles, polygons, and many others. • • •

Enter the Sketching environment. Select the Palette tool (select Sketch > Sketching > Palette). Select the Polygons tab in the Sketcher Palette dialog box, if it is not selected.

•

Double-click on the required polygon from the dialog box to select it.

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•

Click on the model in the graphic area to place the selected polygon. The polygon along with handles for move, rotate, and scale get visible.

•

Also, the Import Section tab get available in the Ribbon along with the dashboard with different edit boxes.

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•

You can enter the values in these edit boxes to perform specified feature (move, scale, and rotate). Alternatively, you can use their corresponding handles attached with the polygon placed.

•

Select the

•

Select button from the Close group of the Sketch tab to exit from the sketch environment and to display the polygon placed.

• •

Select the Close button from the Sketcher Palette dialog box to close it. Next click on the Extrude button (select Model > Shapes > Extrude) and select the sketch drawn.

button from the dashboard to apply changes.

The use of Extrude tool/button is briefly discussed in the next chapter. •

Select the dashboard.

•

Also click on the

option from the Depth Value drop-down and Remove Material button from the button to change the direction, if required.

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•

Click on the

button from the dashboard to display the model with Extrude cut feature.

Similarly, you can add the other sketches from the Polygons, Profiles, Shapes, and Stars tab of the Sketcher Palette dialog box.

Constraints

The constraints are logical operations that are used to control the position and shape/size of the drawing, by applying relationships between sketch elements. Before moving to create a feature, it is considered a good practice to ensure that the sketch is fully constrained. The term, ‘fully-constrained’ means that the sketch has a definite shape and size. You can make a sketch fully-constrained by using dimensions and applying constraints. These constraints are available in the Constraint group of the Sketch tab.

Vertical Constraint

This constraint is used to make a line vertical. •

Click on the Vertical Constraint (Sketch > Constrain > Vertical) to activate it. Advance Sketching & Editing Tools

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• •

Click on the line to make it vertical. Selected line becomes vertical along with

symbol get visible.

Horizontal Constraint

This constraint is used to make a line horizontal. • • •

Click on the Horizontal Constraint (Sketch > Constrain > Horizontal) to activate it. Click on the line to make it horizontal. Selected line becomes horizontal along with symbol get visible.

Perpendicular Constraint

This constraint is used to make two lines perpendicular to each other. • • •

Click on the Perpendicular Constraint (Sketch>Constrain>Perpendicular) to activate it. Click on the two lines one by one to apply Perpendicular Constraint. Selected entities get perpendicular with each other along with symbol get visible.

Tangent Constraint

This constraint is used to make an arc, circle, or line entity tangent to each other. • •

Click on the Tangent Constraint (Sketch > Constrain > Tangent) to activate it. Select the entities one by one. Advance Sketching & Editing Tools

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•

Selected entities get tangent to each other along with

symbol get visible.

Mid-point Constraint

This constraint is used to force a point or vertex to be aligned with the midpoint of a line. • • •

Click on the Mid-point Constraint (Sketch > Constrain > Mid-point) to activate it. Click on the midpoint of any entity and then select the other entities. Selected entities are forced to align at midpoint along with symbol get visible.

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Coincident Constraints

This constraint is used to connect a point to another point of an entity. • • •

Click on the Coincident Constraint (select Sketch > Constraint > Coincident). Select the points of the entities one by one, as shown. The select point get connected.

In Creo this constraint also works as a Collinear Constraint, to forces a line to be collinear to another line. For applying Collinear Constraint, you need to select two lines one by one, as shown.

Symmetric Constraints

This constraint is used to make two objects/entities symmetric about a centerline. • •

Select the Symmetric Constraint (select Sketch > Constraint > Symmetric) to activate it. Select the centerline and then select the points of two entities one by one, as shown. Advance Sketching & Editing Tools

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•

The selected entities get symmetric about the selected centerline.

• Similarly do the same with other two entities to make them symmetric, as shown.

Equal Constraints

This constraint is used to make the dimensions of selected similar entities equal to each other like equal length for line entities and equal radii for selected arcs & circles. • • •

Click on the Equal Constraint (select Sketch > Constraint > Equal) to activate it. To make radius of two arcs and circles equal, select the circle entities one by one, as shown. Both the circles with equal radius along with symbol get visible.

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•

To make length of line entities equal, select them one by one, length of both lines becomes equal.

Note: You need to apply dimension to one of the entities with respect to which you want to apply Equal constraint. Unless system will assume their mean dimensions and apply it to both entities.

Parallel Constraints

This constraint is used to two lines parallel to each other. • • •

Click on the Parallel Constraint (select Sketch > Constraint > Equal) to activate it. Select the entities one by one, as shown. The selected entities get parallel to each other and symbol get visible along both, as shown.

Turn ON/OFF Dimensions and Constraints

After applying dimensions and constraints, if you want to turn on/off their visibility, in the graphics area. Select their corresponding check boxes available in the Sketcher Display Filters drop-down available in the Graphics toolbar, located at top of the graphics area. Advance Sketching & Editing Tools

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You can also select/deselect the check boxes available for displaying grids and vertices. Also, in order to select/deselect all check boxes, you can simply use the (Select All) check box.

Construction Mode

The Construction Mode tool can be used for creating construction entities like construction line, construction circle and so on.

• • • •

Select the Construction Mode tool (Sketch > Sketching > Construction Mode). For creating a construction circle, select the Circle tool from the same group. Click in the graphic area to place center for the construction circle. Move the cursor up to some distance and click to define radius for the circle.

Similarly, you can create other entities also by using the Construction Mode tool.

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Editing tools

The tools available in the Editing group of the Sketch tab are used for editing the sketch created. Some of them are discussed one by one.

Modify

The Modify tool is used to edit/modify the available dimensions in the sketch. It is already discussed in the previous chapter (chapter 2).

Delete Segment

This tool is used to trim/remove the end of an element after the intersection with another element. You can simply remove the entities by dragging the cursor over it. • • •

Select the Delete Segment tool (Sketch > Editing > Delete Segment). Click in the drawing area and drag the cursor over the entities to be removed, by press and holding the LMB (Left Mouse Button). Release the finger over LMB to display the sketch with removed entities.

Corner

The Corner tool is used to trim two entities at their corners. Also, this option is selected to remove the portion of the entities other than the selected one. • • •

Select the Corner tool (Sketch > Editing > Corner). Select at portion of the entities to be retained, as shown. The retained portion get displayed and remaining portion get removed.

•

Similarly, you can do the same for another portion.

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Mirror

The Mirror tool is used to create a mirror copy of selected sketch entity about a centerline. This is very useful for creating symmetrical sketches. •

Select the sketch entities by dragging a window over it.

You can also select the multiple entities by press and hold the Ctrl key + LMB (Left Mouse Button). • •

Select the Mirror tool (Sketch > Editing > Mirror). Select the centerline and press LMB (Left Mouse Button) to display the mirror feature created.

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Rotate Resize

The Rotate Resize tool is used to rotate or scale the sketch. •

Select the entire sketch by dragging window over it.

• •

Select the Rotate Resize tool (Sketch > Editing > Rotate Resize). The sketch along with Move, Rotate, and Scale handles will be get displayed. You can use these handles to perform specified feature.

•

Also, the Rotate Resize tab get available in the Ribbon, along with Move, Rotate, and Scale edit boxes.

•

To apply move, rotate, and scale features, you can enter the values in their corresponding edit boxes. Alternatively, you can use their corresponding handles attached with the previously selected sketch.

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Divide

This tool is used to divide/break an entity into multiple entities/parts by defining multiple points over it. The number of entities depends on the number of points defined. • •

Select the Divide tool (Sketch > Editing > Divide). Click over the entity to define point over it, as shown.

•

The line gets divided into two entities, which you will notice after moving cursor over it.

•

Similarly, you can break it into more than two entities by defining the required number of points. You can break other entities like circles and arcs also.

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Examples: Example 1 In this example, you will create the sketch shown below.

•

Start Creo 6.0 by clicking the Creo Parametric 6.0 icon on your desktop.

•

Click on the New ( ) button from the Quick Access toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. Enter Ch3_Example01 in the Name edit box of the dialog box and select the Part radio button in the Type area. Click OK from the dialog box to enter in the Sketching environment.

• • • • • •

Click on the Sketch tool and then select the Front plane or vice-versa. Click on the Sketch button of the Sketch dialog box or press the MMB to enter in the Sketching environment and draw the sketch. Click on the Corner Rectangle tool (Sketch > Sketching > Rectangle > Corner Rectangle) to activate it. Draw a rectangle (240 X 160) as shown.

• • • •

Click on the Centerline tool (Sketch > Sketching > Centerline > Centerline) to activate it. Move the cursor over upper horizontal line and click where cursor get holds at its midpoint. Move the cursor in the vertical direction and click in the drawing area. Similarly create the horizontal centerline. Advance Sketching & Editing Tools

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•

Select the Circle tool and draw a circle with radius 60 at the center of rectangle.

•

Select the 3-Point/Tangent End option from the Arc drop-down and draw an arc with given dimensions. Also, use the Symmetric required.

•

constrain to make it symmetric with respect to the vertical centreline, if

Similarly draw another arc on the left of the rectangle, as shown.

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The arc is not symmetric, so you need to apply symmetric relations for it. • •

Select the Symmetric constraint from the Constrain group. Select the horizontal centerline and then endpoints of the arc one-by-one to display symmetric arc.

• •

Select the upper arc and then select the Mirror tool from the Editing group. Now select the horizontal centerline to display mirror entity on opposite direction.

•

Similarly do the same with the left side arc, for this select the vertical centerline. Advance Sketching & Editing Tools

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•

Select the Rectangle tool from the Sketching group and draw a rectangle as shown.

•

Select the Circular Trim option from the Fillet drop-down to create round edges of recently drawn rectangle. Select the two-line entities of the rectangle one by one to display round corner, as shown.

•

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• •

Select the Dimension tool from the Dimension group and select the recently created fillet to generate its dimension value. Double-click over the dimension value to edit it and apply 12 to the fillet radius.

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•

Again, using the Circular Trim option from the Fillet drop-down, apply fillets to the other corners of the rectangle, as shown.

• • • • •

You may notice that radius of each fillet will be different. Select the Equal constraint from the Constrain group. Select the first fillet with dimension value and then select other fillets. The filleted entities with Equal constraint get visible with radius equal to the fillet with radius. Apply the vertical dimension 15 between top edge of the outer & inner rectangle.

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•

Now drag the cursor over the rectangle with filleted corners to select it.

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•

Select the Mirror tool and then select the vertical centerline to mirror it.

•

Now select the Delete Segment tool from the Editing group and select the entities to trim, as shown.

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• • •

The sketch is complete, click on the button from the Close group of the Sketch tab to exit from the sketch environment. Click on the Save (Ctrl+S) button from the Quick Access toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. Click on the OK button. The sketch gets saved and click on the Close button from the upper right corner to close it. Alternatively click on the Close

button to close the file.

Example 2 In this example, you will create the sketch shown below.

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•

Start Creo 6.0 by clicking the Creo Parametric 6.0 icon on your desktop.

•

Click on the New ( ) button from the Quick Access toolbar to display the New dialog box. Alternatively press Ctrl + N key from the desktop to highlight the New dialog box. Enter Ch3_Example02 in the Name edit box and select the Part radio button in the Type area of the New dialog box. Click on the OK button to enter in the Sketching environment. Click on the Sketch tool and then select the Front plane or vice-versa. Now draw the sketch over it. Select the Centerline tool from the Centerline drop-down of the Sketching tab. Draw two centerlines. Select the Center Rectangle tool (Sketch > Sketching > Rectangle > Center Rectangle) to activate it. Next draw the sketch as shown.

• • • • • •

•

Select the Normal tool from Dimension group to apply dimensions.

•

Draw two circles as shown, as shown.

• • •

Press & hold the CTRL key and select both circles one by one. Next select the Mirror tool from the Editing group to mirror both circles. Select the centerline to display mirror entities.

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• • •

Select the Delete Segment tool from the Editing group to trim unwanted entities. Press and hold the LMB and drag the cursor over the entities to trim. Also remove the entities under inner circles. Also select the inner construction lines and press the DELETE key from the laptop to remove them.

•

Select the Circle tool and draw two concentric circles, as shown.

•

Select the Line tool and move the cursor over the outer circle and click where the cursor sticks on its left, as shown. The vertex point will be visible only if the Vertices Display checkbox is selected in the Sketcher Display Filters drop-down.

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• • •

More the cursor downwards and draw the line entity, as shown. Press MMB to deactivate the Line tool. Create line entity on other side also. You can also do the same by creating a centerline and using the Mirror tool.

• •

Select the recently drawn sketch and then select the Mirror tool. Now select the vertical centerline to display mirror entities.

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•

Similarly, select both of the top entities and using the horizontal centreline create mirror entities, as shown.

•

Using the Delete Segment trim the entities (as discussed above), as shown.

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•

The sketch is complete, select sketch environment.

•

Click on the Save (Ctrl+S) button from the Quick Access toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. Click on the OK button. The sketch gets saved and click on the Close button from the upper right corner to close it.

•

button from the Close group of the Sketch tab to exit from the

Example 3 In this example, you will create the sketch shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 icon on your desktop. 2. Click on the New ( ) button from the Quick Access toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. 3. Enter Ch3_Example03 in the Name edit box and select the Part radio button in the Type area of the New dialog box. 4. Click on the OK button to enter in the Sketching environment. 5. Click on the Sketch tool and then select the Front plane or vice-versa. Now draw the sketch over it. 6. Select the Corner Rectangle tool (Sketch > Sketching > Rectangle > Corner Rectangle) to activate it. Next draw the sketch as shown.

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7. Create the vertical centerline at the middle of the rectangle, as shown.

8. Using the Line tool draw the line entity on the left side of the centerline and apply the shown dimensions.

9. Select the Line entity and then select the Mirror tool from the Editing group. 10. Select the centreline, to display mirror entity.

11. Now select the 3-Point/Tangent End tool from the Arc drop-down. 12. Click at the upper two points of the line entities one-by-one. 13. Move the cursor upwards and click to draw the arc. 14. Using the Dimension tool apply the dimensions, as shown.

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15. Now activate the Center and Point tool from the Circle drop-down. 16. Click at the center of the recently drawn arc. 17. Move the cursor upto some distance and click to draw the circle 18. Using the Dimension tool, apply the given dimensions.

19. Create another circle, as shown.

20. Select the Center and Ends option from the Arc drop-down. 21. Click at the midpoint of the bottom left vertical line, as shown. Advance Sketching & Editing Tools

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22. Then click at the two endpoint of the line entity one-by-one to display arc.

23. Using the Mirror tool mirror the recently created arc entity.

24. Using the centerpoint of both arcs draw the circles.

25. Select the Delete Segment tool and remove the entities, as shown.

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26. Activate the Circular Trim option from the Fillet drop-down. 27. Select the edges to round their corners.

Sometimes while creating fillet features, system will inform you to delete dimensions attached with the selected entities. This information will be displayed in the Confirmation message box. Press the Yes button to continue. 28. Now apply dimensions to one of the fillet entities, as shown.

29. Activate the Parallel constraint by selecting the Parallel button from the Constrain group. 30. Select the entities to apply Parallel constraint between each other, if required.

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You can turn on the Disp Constr from the Sketcher Display Filter drop-down to display all constraints attached with the sketch created.

31. Activate the Equal constraint by selecting the Equal button from the Constrain group. 32. Select the fillet entity with dimension and then select other fillets to apply Equal relation between all.

33. Next select the Symmetric Constraint from the Constrain group to apply symmetric relations between some entities, as shown.

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34. The sketch is complete, select sketch environment.

button from the Close group of the Sketch tab to exit from the

35. Click on the Save (Ctrl+S) button from the Quick Access toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. 36. Click on the OK button. The sketch gets saved and click on the Close button from the upper right corner to close it.

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Questions: 1. 2. 3. 4. 5. 6. 7. 8.

Which tool is selected to start a new file in Creo Parametric and from where it is selected? Which tool is used to apply dimensions in a sketch? Describe the method to create a tangent arc. List any two sketch constraints in Creo Parametric. What is the use of the Three Point tool? Which tool is used for modifying dimensions in Creo Parametric? What is the use of Circular Trim Fillet tool? Which tool is used to create a polygon?

Exercises: Exercise 1

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Exercise 2

Exercise 3

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Chapter 04: Sketch Based Features Sketch-Based features are used to create basic and simple parts. Most of the times, they form the base for complex parts as well. These features are easy to create and require a single sketch. Now, you will learn the commands to create these features. The topics covered in this chapter are:  Extrude o Creating a Solid Model using the Extrude Tool o Remove Material using the Extrude Tool o Using the Extrude tool for creating Surface Feature  Revolve o Revolve the sketch as Solid o Revolve the sketch as Surface o Removing Material by Using Revolve tool

Extrude Tool

The Extrude is the process of creating a two-dimensional profile and converting it into three-dimensional, perpendicular to the sketching plane and by giving it the required thickness. In order to create a cylinder, draw a circle and after selecting the Extrude tool, select it. The Extrude tool allows you to create a solid or surface, and to add or remove material. After selecting this tool from the Shape group, the Extrude dashboard will be displayed as shown.

Some of the important options used in the Extrude dashboard are discussed next.

Extrude as Solid

This option is selected to create a solid. In order to create a solid, the sketch drawn should be the closed loop.

Extrude as Surface

This option is selected to create a surface. In order to create a surface, you can also select the sketch with the open loop.

Depth Value drop-down

This options in this drop-down are used to specify depth values while using the Extrude tool for adding or removing material as per your requirements.

Creo Parametric 7.0 - Step-By-Step Guide

Blind

This option is selected to extrude a section from the sketching plane by the specified depth value. You can also use this option in removing material by selecting the Remove Material button from the dashboard. a) Through All option selected to extrude (add material) b) Through All option along with Remove Material option selected to remove material

(a)

(b)

Symmetric

This option is selected to extrude a section for adding or removing material on both side of the sketching plane by half of the specified depth value.

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To Next

This option is selected to extrude a section up to the next surface. You cannot use a datum plane as a terminating surface. Similarly, you can use this option during removing material as discussed above.

Through All

This option is selected to extrude the sketch through all surface. a) Through All option selected to extrude (add material) b) Through All option along with Remove Material option selected to remove material

(a)

(b)

Through Until

This option is selected if you want to extrude the sketch up to any selected surface. You cannot select the point or plane for reference, while using this option. a) Through Until option selected to extrude (add material) b) Through All option along with Remove Material option selected to remove material

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To Selected

This option is selected to extrude a section to a selected point, curve, plane, or surface. You can also use this option during removing material as discussed above.

Depth Value Edit box

The Depth Value (Dimension) edit box in the Extrude dashboard is used to enter the required thickness to the sketch/section up to which you want to extrude it.

Changing depth direction

This button is used to change the direction of extrusion of the sketch accordingly with the plane it is drawn.

Remove Material

The Remove Material button in the Extrude dashboard is used to remove the material from the previously created features. Also, this button is not available during creating the base feature.

Thicken Sketch

This button is used to create a thin feature with the required thickness.

Changing material direction

This button is used to change the material direction to extrude to other side of the sketch.

Creating a Solid Model Using the Extrude Tool

The Extrude tool in Creo is used for creating a solid model. Below are the steps shown to be followed in order to create a solid model using the Extrude tool. • •

Select the Top plane from the drawing view. Select the Sketch tool from Datum group of the Model tab.

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•

Draw the sketch and select the Default Orientation option from the Saved Orientations down in order to display the better view of the sketch, as shown.

•

From the Close group, click on the

• •

Select the Extrude tool (Model > Shapes > Extrude) to display Extrude dashboard. Select the recently drawn sketch to display preview of its 3D/extruded view (click on Extrude as solid button, if required).

• •

Enter the required value in the Dimension edit box of the Extrude dashboard. From the Depth drop-down, select the Symmetric option to extrude the sketch on both sides. Sketch Based Features

drop-

button to exit from the sketch environment.

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•

Now from the dashboard, click on the

button to apply changes and display the 3D model.

Using the Extrude Tool for Removing Material

The Extrude tool can be also used in removing material from already created solid feature. •

Select the top surface of the recently created model and click on the Sketch button from the Datum group of Model tab.

•

The model gets parallel to the screen, click on the References button from the Setup group of the Sketch tab. Select the outer circular edges of the model in order to generate the reference centers of the circular edges.

•

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•

Now with the help of reference centers, draw the two circles concentric to reference circles.

• •

From the Close group, click on the button to exit from the sketch environment. Select the Default Orientation option from the Saved Orientations drop-down to display the trimetric view of the model view of the sketch.

•

Select the Extrude tool from the Shapes group of the Model tab.

•

Click on the Remove Material recently drawn sketch.

•

The cut feature (material removed) of the model get visible and select the Through All from the Depth View drop-down. Click on the

button from the Extrude dashboard displayed and select the option

button to flip direction, if required.

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•

From the dashboard, click on removed.

button to apply changes and display 3D model with material

Using the Extrude Tool for Creating Surface Feature The Extrude tool can be also used for creating surface features. 1.

Draw the sketch on the top surface, following the steps discussed earlier.

2. Select the Extrude tool from the Shapes group of the Model tab. 3. Select the Surface button from the Extrude dashboard displayed. 4. Select the sketch drawn to display preview of Surface feature. 5. Click on the

button to apply changes and display Surface feature.

Using the Extrude tool for Creating Thicken Feature

The Extrude tool can be also used for creating thicken features. To create a thin feature. •

Select the Extrude tool from the Shapes group of the Model tab. Sketch Based Features

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•

Click on the Extrude as solid

and Thicken Sketch

buttons.

The Thicken Sketch button will be active only if you have selected Extrude as solid button. •

Click on the sketch drawn to display preview of the thicken feature.

•

Next entire the required depth in the Depth Value edit box or use the mouse cursor to change its thickness by dragging it. Also, you can create the thin feature with the required thickness by entering it in the Thickness edit box, displayed in the Extrude dashboard.

•

• •

From the dashboard, click on the button to apply changes and display 3D model with thicken feature. Use the MMB (middle mouse button) to change the orientation of the model, if required.

Revolve Tool

This revolve feature is the process of revolving a 2D sketch about a centerline at a specified angle by using the Revolve tool. It can be used to add or remove the material. Sketch Based Features

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Revolve the sketch as Solid • •

Draw the sketch with a centerline. Click on the Revolve (Model > Shapes > Revolve) tool from the Ribbon to display Revolve dashboard.

•

Select the sketch drawn if it is not selected to display the preview of the revolve feature, as shown.

The Axis of Rotation option in the Revolve dashboard is used to specify the axis, about which the sketch revolves. The Angle edit box is used to specify the angle of rotation. By default, the sketch will be revolved with 360 degrees. The working of other options in this dashboard is same as that of the options in the Extrude dashboard, previously discussed. •

From the dashboard, click on the button to apply changes. The 3D revolved model get displayed. You can use the MMB (middle mouse button) to rotate the model to change the orientation of the model, if required.

Model revolved with 360 degrees Sketch Based Features

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Revolve the sketch as Surface

The Revolve as surface button in the Revolve dashboard is also used to create an revolve feature of thin surface or an open loop. You can alternatively select the Thicken Sketch button, if you have already selected Revolve as solid button. You can next enter the required angle and thickness in their corresponding edit boxes. You can also specify the side for the material addition by selecting the button, located on the right side of the Thickness edit box in the dashboard. The Thickness edit box will be only available, if you select the Revolve as solid button. • • •

Draw the sketch with a centerline. Select the Revolve tool from the Shapes group of the Model tab. Select the sketch drawn, the revolve feature get created, as shown. As the sketch is open, the Revolve as solid button along with Thicken Sketch button get selected automatically. Thus, creates a surface model as shown.

•

From the dashboard, click on the

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button to apply changes. The 3D revolved model get displayed.

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You can also use the Angle edit box to specify the different angle of rotation, as per your requirements. Here is the model revolved with 270 degrees angle.

Using the Revolve tool for Creating Thicken Feature

The Revolve tool can be also used for creating thicken features. To create a thin feature. •

Select the Revolve tool from the Shapes group of the Model tab.

•

Click on the Revolve as solid

and Thicken Sketch

buttons.

The Thicken Sketch button will be active only if you have selected Revolve as solid button. •

Click on the sketch drawn to display preview of the thicken feature.

•

Next entire the required rotational angle in the Angle edit box or use the mouse cursor to change its rotational angle by dragging it. Also, you can create the thin feature with the required thickness by entering it in the Thickness Value edit box, displayed in the Revolve dashboard.

•

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• •

From the dashboard, click on the button to apply changes and display 3D revolved model with thicken feature. Use the MMB (middle mouse button) to change the orientation of the model, if required.

Removing Material by Using Revolve tool

The Revolve tool can be also used as a Revolve Cut tool, in removing material from the existing feature created. •

Draw the sketch on an existing feature created along with the centerline, as shown.

•

Select the Revolve tool from the Shapes group of the Model tab, to display Revolve dashboard along with Revolve feature.

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•

Select the Remove Material button from the dashboard displayed and enter 180 in the Angle edit box. You can enter the angle value in the edit box as per your requirements. Alternatively double-click on the angle value in the drawing area and enter the required value.

•

Select the recently drawn sketch. The preview of part with material removed get displayed as shown.

•

From the dashboard, click on the (material removed) get displayed.

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button to apply changes. The 3D model with revolved cut feature

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Examples: Example 1 In this example, you will create the model shown below.

•

Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop.

•

Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. Enter Ch4_Example01 in the Name edit box of the dialog box and select the Part radio button in the Type area. Click on the OK button from the dialog box to enter in the Sketching environment.

• • • • •

Click on the Sketch tool and then select the Front plane or vice-versa. Now draw the sketch over it. Select the Line tool from the Sketching group and draw the sketch as shown. Draw a centerline by selecting the Centerline tool.

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Activate the Normal tool and apply dimensions to the sketch created by you (dimensions may vary).

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Press the MMB to deactivate the Normal tool. Alternatively, you can choose the Select button from the Operations group to deactivate it. • •

Press and hold the LMB and drag the window over the sketch to select whole sketch with all entities. The sketch with all dimensions turns green.

•

Select all dimension and select the Modify Dimensions dialog box as shown.

tool from the Editing group to display the Modify

All the dimensions will be displayed in the dialog box and you can modify them by entering the required dimensions accordingly. •

Deselect the Regenerative check box and enter the required dimensions in the corresponding dimension edit boxes in the dialog box. Alternatively, you can use the thumbwheel to modify the dimensions. By dragging the thumbwheel next to the corresponding dimension edit boxes using LMB.

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• •

• •

Note that the dimension edit box that you click in the dialog box, the same dimension gets highlighted in the blue box in the drawing area. Modify all the dimensions as shown.

Now click on the button from the Close group of the Sketch tab to exit from the sketch environment. Select the Revolve tool from the Shapes group to display the Revolve dashboard and preview of the revolve feature.

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•

Replace revolve angle 360 with 270 in the Revolve dashboard and click on the to change angle direction, if required.

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From the dashboard, click on the

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Click on the Save (Ctrl+S) button from the Quick Access Toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. Click on the OK button. The sketch get saved and click on the Close button from the upper right corner to close it.

•

Alternatively click on the Close

button

button to apply changes. The 3D model get created.

button to close the file.

Example 2 (Millimeter) In this example, you will create the model shown below.

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1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the desktop to highlight the New dialog box. 3. Enter Ch4_Example02 in the Name edit box and select the Part radio button in the Type area of the New dialog box. 4. Click on the OK button to enter in the Sketching environment. 5. Click on the Sketch tool and then select the Front plane or vice-versa. Now draw the sketch over it. 6. Select the Line tool from the Sketching group, draw the sketch as shown. 7. Draw a centerline by selecting the Centerline tool from the Centerline drop-down of the Sketching tab. 8. Apply the diametric dimensions and constraints. Note that you need to apply the Coincident constraint between the top of the sketch and the Top plane.

9. Now click on the button from the Close group of the Sketch tab to exit from the sketch environment. 10. Select the Revolve tool (Model > Shapes > Revolve) to display Revolve dashboard. 11. Create the revolve feature at 360 degrees angle, as shown.

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12. Again, activate the Sketch tool and select the Top plane to draw sketch over it. 13. Click on the Sketch button from the Sketch dialog box or press the MMB to enter in the sketching mode. 14. Activate the References (Sketch > Setup > References) tool. 15. Select the circular edge in the model to display center of the circle.

16. Using the Circle tool draw a circle of 90 dia. 17. Activate the Construction Mode (Sketch > Sketching > Construction Mode) tool and draw a construction circle of radius 108 (216 dia). To draw a construction entity (line, circle, arc and so on), you should activate both tools i.e. Construction Mode tool and the draw tool. 18. Similarly draw the Construction lines or the centerlines. 19. Activate the Normal tool and double-click on the circle entities to generate their diametric dimensions. For better visibility of Construction circle entity, Display Style is changed from Graphics toolbar.

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20. Click on the Construction Mode button again to deactivate it, if it is still active. 21. Again activate the Circle tool and create the circle entities at the intersection of centerline/construction line and the construction circle.

22. Activate the 3-Point/Tangent End tool from the Arc drop-down and draw an arc.

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23. Select the arc entity and then activate the Mirror tool. 24. Select the vertical centerline to display mirror of the arc entity.

25. Similarly create another two mirrors of the arc entity, as shown.

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26. Activate the Delete Segment tool and move the cursor over unwanted entities to remove them. 27. Also select the construction circle and press the Delete key from the keyboard to remove it.

28. Now click on the button from the Close group of the Sketch tab to exit from the sketch environment. 29. Activate the Extrude tool and extrude the sketch upto 40 distance in the downwards direction. 30. From the dashboard, click on the

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button to apply changes. The 3D model gets displayed.

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31. On the Quick Access Toolbar, click on the Save (Ctrl+S) button to display Save Object dialog box. The name of the sketch will be the same as entered earlier. 32. Save and close the file.

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Questions: 1. 2. 3. 4. 5. 6. 7. 8.

Which tool is used to create a revolve feature? How can you remove material from a solid model using the Extrude tool? What is the use of the Depth Value drop-down in Extrude dashboard? What is the procedure to create a surface feature using Revolve tool? How can you extrude a sketch in both direction? Which tools are activated for creating a construction circle? How can you create a thicken feature? Which button is selected for material removal in Extrude dashboard?

Exercises: Exercise 1

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Exercise 2

Exercise 3

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Chapter 05: Datum and Advanced Features Datum features are considered as non-solid features, used during the construction of other features. The most common datum features include datum planes, datum axes, datum coordinate systems, and datum point. The datums are very useful, when you are working over very complex models in Creo Parametric. Now, you will learn the tools to create these features. The topics covered in this chapter are:  Datum plane  Datum Axes  Datum point  Round  Shell  Rib

Datum Datum features are considered as non-solid features, used during the construction of other features. The datum features do not add or remove material from the model, so it will not affect the mass properties of the model. The various datum features are planes, axes, points and coordinate systems. The datum features are very useful, when you are working over very complex models in Creo Parametric. Now, you will learn the tools to create these features. The visibility of the datum features (datum planes, datum axes, datum lines etc) can be toggled on/off using the Datum Display Filters drop-down, in the Graphics toolbar located at the top of the user interface.

Datum Plane

Each time you start a new part file, Creo automatically creates default Datum planes (as shown below) along with the Datum coordinate system. Planes and coordinate system make up a specific type of features in Creo, known as Datum features. These features act as supports to your 3D geometry. In addition to the default Datum features, you can create your own additional planes and coordinate systems too. Until now, you have known to create sketches on any of the default datum planes. If you want to create sketches and geometry at locations other than default datum planes, you can create new datum planes manually. You can do so by using the Datum Plane tool.

CREO Parametric 7.0 - Step-By-Step Guide

Below is combination given according to which, you can create datum planes:      

Datum plane, offset from any existing datum plane or flat surface. Datum plane, through an axis, curve, or edge. Datum plane, normal to an existing datum plane or flat surface. Datum plane, parallel to an existing datum plane or flat surface. Datum plane, at a specified angle to an existing datum plane or flat surface. Datum plane, tangent to any selected cylindrical surface.

Uses of Datum Plane

Some of the important uses of Datum Plane are:    

Used in creating sketching planes and reference planes. Used as dimensioning and alignment references in the sketch. Used for creating cross sections. Used as reference plane for the Mirror tool.

Offset Plane

The datum plane created using this method, will be parallel to a face or another plane (default plane or any previously created datum plane).

1. Select the Plane tool (select Model > Datum > Plane) to display Datum Plane dialog box. 2. Select the flat surface, to display the datum plane

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3. Enter the required distance in Translation edit box in the Datum Plane dialog box, up to which you want to create datum plane. Alternatively, select the rubber-band attached with the reference plane and drag it upto the required distance.

4. Select the OK button in the Datum Plane dialog box, to display the datum plane.

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Similarly, you can create the offset plane at an offset distance, after selected any datum plane.

Through Method This method is used to create the datum plane, passing through three selected points.

 Select the Plane tool (select Model > Datum > Plane) to display Datum Plane dialog box.  Press and hold the Ctrl key and select the first and second points of the model, one-by-one.

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 Similarly select the third point of the model.

 The datum plane gets created across the selected points.

Angle Plane This method is used to create the datum plane at an angle from the selected flat surface.

 Select the Plane tool (select Model > Datum > Plane) to display Datum Plane dialog box.  Select the flat surface to display datum plane parallel to it.

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 Press and hold the Ctrl key and select the edge to display datum plane at an angle.

 Next enter the required angle in the Rotation edit box in the Datum Plane dialog box.  Select the OK button to display the datum plane created at angle entered.

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Alternatively, you can press and hold the LMB on the ribbon-band attached with the plane created and drag it up to the required angle.

Tangent Plane

This method is used to create a tangent datum plane across the selected round surface.

1. Select the Plane tool (select Model > Datum > Plane) to display Datum Plane dialog box. 2. Select the round surface, to display the preview of the reference datum plane.

3. Next select the Tangent option in the Datum Plane dialog box to display the tangent plane. 4. Press and hold the Ctrl key and select the point, as shown.

5. Select the OK button from the Datum Plane dialog box to display the final tangent datum plane.

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Parallel Plane This method is used to create a datum plane parallel to the selected plane or flat surface. 1. Create a cylindrical model.

2. Select the Plane tool (select Model > Datum > Plane) to display Datum Plane dialog box. 3. Press and hold the Ctrl key and select the Plane and axis of the cylindrical model for references. 4. Select the Parallel option from the drop-down in Datum Plane dialog box to display preview of Parallel datum plane.

6. Select the OK button from the Datum Plane dialog box to display the final Parallel datum plane.

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Datum Axis The Datum Axis is another very important datum feature. Datum axis get created automatically while creating holes or revolved features. The datum axis can be created by activating the Axis tool (Model > Datum > Axis). This tool is very useful while creating rotational patterns.

Below is combination according to which, datum axis can be created:     

Datum axis, normal to a datum plane or flat surface Datum axis, through a datum point Datum axis, through a linear edge Datum plane, through the center of a cylindrical surface Datum plane, at an intersection of two datum planes or flat surfaces

Uses of Datum Axis

Some of the important uses of Datum axis are: 1. Used in creating centerlines in drawings 2. Used in creating coaxial holes 3. Used to indicate symmetry in drawings DATUM AND ADVANCED FEATURES

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Normal Axis This method is used to create a datum axis, normal to the selected flat surface.  Select the Axis tool (Model > Datum > Axis) to display Datum Axis dialog box.  Click on the flat surface of the model, to display the Normal axis (normal to flat surface).

 You can use the LMB (Left Mouse Button) to relocate the axis.

 Next click in the Offset reference area in the Datum Axis dialog box, to give the reference locations. DATUM AND ADVANCED FEATURES

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 Select the two edges for references, you can edit the edit the reference dimensions created and enter the required one.

 You can also edit the dimensions of the location in the dialog box.  Select the OK button from the dialog box to display the datum axis.

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Through Axis This method is used to create a datum axis, passing through the selected edge or center of any round surface.  Select the Axis tool (Model > Datum > Axis) to display Datum Axis dialog box.  Select the round surface to display preview of datum axis through the center of round surface.

 Select the OK button from the dialog box to display the datum axis created.

 You can also use the Through option to create a datum axis through edge of the model.  Select the edge of the model. DATUM AND ADVANCED FEATURES

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 Select the OK button from the dialog box to display the final datum axis created.

Datum Axis Passing through two points This method is used to create a datum axis passing through the selected edge or center of any round surface.  Select the Axis tool (select Model > Datum > Axis).  Press & hold the Ctrl key and select the first point and then second point.

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 Select the OK button from the Datum Axis dialog box to display the final datum axis between two selected points.

Tangent Axis

This method is used to create a datum axis, tangent to the selected round surface.  Select the Axis tool (select Model > Datum > Axis).  Press & hold the Ctrl key and select the edge of the round surface.

 Similarly select the vertex on the round surface. DATUM AND ADVANCED FEATURES

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 Select the OK button from the Datum Axis dialog box to display the final datum axis tangent to the selected round surface.

Datum Point The Datum Point tool is used to create a datum point.  Activate the Point (Model > Datum > Point > Point) tool to display Datum Point dialog box.  Click on the surface to plane the datum points, as shown.  The points placed get visible in the Datum Point dialog box.

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 Click on the Offset references area in the dialog box and select the two edges to generate reference dimensions with them. The reference dimensions get displayed in the Datum Point dialog box and in the drawing area. You can edit it by double clicking over it and enter the required.

For better visibility of Datum points, the No Hidden option is selected from the Display Style drop-down of the Graphics toolbar.

Datum point are very useful while creating: 1. Coordinate system 2. Datum planes and datum axis

Round Feature This feature is used to remove the edges or corners of the part models using different tools. There are two tools used for applying round features 1.) Round Tool 2.) Auto Round Tool DATUM AND ADVANCED FEATURES

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Round Tool

The Round tool is used to create round corners between two connected faces.  Select the Round tool (Model > Engineering > Round) to display Round dashboard.  Enter the required dimension in the Round dashboard, as shown.

 Click on the first surface on top.

.  Press & hold the Shift key and click on the second surface in the mid, as shown.  The first-round feature gets visible.

 Now click on the surface in right side. DATUM AND ADVANCED FEATURES

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 Press and hold Shift key and select another surface in the mid, as shown.  The second-round feature get visible.

 Similarly follow the same procedure with others, one by one.  From the dashboard, click on the OK button to apply changes. The 3D model gets created.

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Similarly, as discussed, you can create round edges.  Select the Round tool from the Engineering group.  Enter the required radius in the Round dashboard.  Select the all possible edges of the model, as shown.

Some of the edges (hidden edges) are not visible, you can move cursor over the model and select the hidden edges as they get highlighted, as shown. Alternatively rotate the model & select them one-by-one.

 The preview of the round feature gets visible.

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 From the dashboard, click on the OK button to apply changes. The 3D model with round feature get visible.

You can also create round feature by selecting two flat surfaces.

Similarly, by selecting two perpendicular faces you can create round feature between them.

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Auto Round Tool

This tool is used to apply round features automatically.  Select the Auto Round tool (Model > Sketching > Round > Auto Round) to display Auto Round dashboard.  Enter the radius value in the edit box of the dashboard displayed, as shown.

 From the dashboard, click on the OK button to apply changes. The 3D model with auto round feature get visible (rounds at each edges).

Note: If you don’t not want to apply round feature to any edge/edges of the model then before selecting the OK button of the dashboard, select these edges. The model will round feature at all the edges except at the previously selected edges get visible.

Applying Round Feature to Selected Edges

To apply auto round feature to the selected edges of the model.  Select the Auto Round tool (Model > Sketching > Round > Auto Round) to display Auto Round dashboard.  Enter the radius value in the Radius Value edit box of the dashboard displayed.  Click on the Scope tab and select the Selected Edges radio button.

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 Press and hold the Ctrl key and select some of the edges of the model.  The model with auto round feature at selected edges will be displayed.

Chamfer The tools available in the Chamfer drop-down are used to replace the sharp corners with an inclined edge. There are two type of tools used for creating chamfer feature – Edge Chamfer and Corner Chamfer

Edge Chamfer The Edge Chamfer tool is used to display Edge Chamfer dashboard and create chamfer along the selected edge using options available in the dropdown in it. The options available in this dashboard are:

DxD The option D x D is used to create chamfer with equal distance from both surfaces. This option is selected by default (as shown above). DATUM AND ADVANCED FEATURES

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 Select the Edge Chamfer tool (Model > Engineering > Chamfer > Edge Chamfer) to display Edge Chamfer dashboard.  The D x D option in the drop-down of the Edge Chamfer dashboard is selected by default.  Enter the required distance in the Distance edit box (i.e. 15).  Select the edge of the model, to display the preview of the edge chamfer feature.

You can, press and hold the cursor over rubber band attached with the chamfer feature or drag it to change its distance.

 Select other edges if required, the chamfer feature with uniform distance get visible.

 From the dashboard, click on the OK button to apply changes. The 3D model with chamfer feature get visible.

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The other options available in the drop-down of Edge Chamfer dashboard are discussed next:

D1 x D2

This option is used to create the chamfer with two different distances from selected edge.  Select the D1 x D2 option from the drop-down of the dashboard.  Now, enter two distances in two Distance edit boxes (D1 and D2) in the dashboard, as per your requirements.  Select the edge, to display chamfer feature.

 From the dashboard, click on the OK button to apply changes. The 3D model with chamfer feature get visible.

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Angle x D

This option is used to create the chamfer with angle and distance.  Select the Angle x D option from the drop-down of the dashboard.  Now, enter angle and distance in the Angle and Distance edit boxes (Angle and D) in the dashboard, as per your requirements.  Select the edge, to display chamfer feature.

 To change angle or distance again, press and hold the left mouse button (LMB) on the rubber band and drag it.

 From the dashboard, click on the OK button to apply changes. The 3D model with chamfer feature get visible.

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45 x D

This option is used to create the chamfer with 45-degree angle from both surfaces and distance (D).  Select the 45 x D option from the drop-down of the dashboard.  Now, enter distance in the Distance edit box (D) in the dashboard, as per your requirements.  Select the edge, to display chamfer feature.

 From the dashboard, click on the OK button to apply changes. The 3D model with chamfer feature get visible.

OxO

The O x O is used when you select the Offset Surfaces option from the slide-down panel which is displayed on choosing the Sets tab of the Chamfer dashboard. In this case, the chamfer is created by offsetting the adjacent surfaces and you need to define the offset distance from the edge.

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O1 x O2 The O1 x O2 is used when the chamfer is created by offsetting the adjacent surfaces independently.

Corner Chamfer The Corner Chamfer tool is used to create a bevelled surface, at the intersection of three edges.  Select the Engineering > Chamfer > Corner Chamfer from the Model tab.  Select the corner point of the model to display the corner chamfer feature, as shown.

 Now, you can enter the required distances in the Distance edit boxes (D1, D2, and D3); Alternatively, press and hold the LMB (Left Mouse Button) on the rubber band attached with the chamfer feature and drag the cursor, up to the required distance.

 From the dashboard, click on the OK button to apply changes. The 3D model with corner chamfer feature get visible.

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Shell Tool

The Shell tool is used to apply to solid model to make it hollow. Thus, this is very time saving technique during creating thin walls solid models like tanks, containers, and bottles.  Select the Shell tool from the Engineering group.  Enter the required thickness in the Thickness edit box of the Shell dashboard.

 Select the face/faces to remove, as shown.  The preview of the model with shell feature get visible.

 From the dashboard, click on the OK button to apply changes. The 3D model gets created.

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Rib Feature

Ribs are the features that are used to strengthen the solid parts. This feature is almost similar to the extruded feature, the only difference is that it requires an open sketch. After selecting the open sketch and applying the required thickness, it automatically creates the rib feature. It adds the material on both sides with symmetric thickness. There are two types of ribs - Trajectory Ribs and Profile Ribs, as discussed below.

Trajectory Ribs The Trajectory Rib tool is very important type of Rib feature, which is mainly used to strengthen the hollow or shell areas.  Select the Trajectory Rib from the Rib drop-down.

 Enter the required thickness in the Trajectory Rib dashboard, as shown.

 Select the flat Surface (you can also select plane, if any).

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 The selected surface gets adjusted parallel to the screen, to create sketch over it.  Before drawing the sketch, select the References button from the Setup group of the Sketch tab, to create a reference edge, if required.  Select the inner edge of the circular surface to set it as reference edge.  The reference edge gets created, as shown.

 Select the Line tool from the Sketching group and draw the sketch, as shown.

 Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. DATUM AND ADVANCED FEATURES

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 The preview of the Rib feature gets visible with the thickness previously entered in the dashboard.

 Click on the

button from the dialog box to display ribs with draft angle.

The Thickness edit box in the dashboard now changes to the Angle edit box in which you can enter the angle value, as per your requirements.

 Now click on the corners, as shown.

button from the dialog box, to create the rib feature with round

The Angle edit box in the dashboard now treats as the Radius edit box in which you can enter the radius value, as per your requirements.

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 Now select the face round, as shown.

button from the dialog box, to create the rib feature with its top

The Radius edit box is still active in which you can enter the radius value, as per your requirements.

 From the dashboard, click on the OK button to apply changes. The 3D model gets created.

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Profile Rib The Profile Rib tool is another very important type of Rib feature, used in creating profile rib. The sketch for the rib feature should be open entity.  Select the Profile Rib from the Rib drop-down in the Engineering group.  Select the sketching plane to draw sketch for the rib feature.

 Before drawing the sketch, select the References button from the Setup group of the Sketch tab, to create a reference edge, if required.  Select the edges to create reference edges over it, as shown.  The reference edge gets created, as shown.

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 Select the Line tool from the Sketching group and draw the sketch (also apply the dimensions, if required), as shown.

 Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment.  Enter the required thickness in the Thickness edit box and click on the direction arrow to change its direction (if required).

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 The preview of the Rib feature gets visible with the thickness previously entered in the dashboard.  Select the Right option from the Saved Orientations drop-down, for better visibility of the rib feature.

 You can use the button from the dialog box, to change the thickness direction of the rib feature.  From the dashboard, click on the OK button to apply changes. The 3D model with rib feature get created.

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Examples: Example 1 (Millimetres) In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New (

) button from the Quick Access Toolbar to display the New dialog box.

Alternatively press Ctrl + N key from the keyboard to display the New dialog box. 3. Enter Ch5_Example01 in the Name edit box of the dialog box and select the Part radio button in the Type area, if it is not selected. 4. Click OK from the dialog box to enter in the Sketching environment. 5. Select the Front plane and click on the button from the Datum group of the Model tab, to draw sketch over it. 6. Select the Line tool from the Sketching group and draw the sketch, as shown.

7. Now click on the environment. DATUM AND ADVANCED FEATURES

button from the Close group of the Sketch tab to exit from the sketch

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8. Select the Extrude tool from the Shape group of the Model tab and select the recently drawn sketch. Extrude the sketch up to 65, as shown below. Select the option from the Depth Value drop-down of the Extrude dashboard, to Extrude the sketch in both direction dashboard to change the extrude direction, if required.

9. From the dashboard, click on the OK button to apply changes. The 3D model gets created.

10. Now click on the Plane tool from the Datum group of the Model tab, to create a datum plane. 11. Press and hold the Ctrl key and select the flat plane and the edge of the model one-by-one, to display preview of plane created, as shown.

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12. Enter 330 angles in the Datum Plane dialog box. Alternatively, you can double click and enter the required angular value in the drawing area, as shown.

13. Select the OK button from the Datum Plane dialog box to apply changes and display the datum plane created.

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Now you need to create the new sketch on the recently created datum plane. 14. Click on the Sketch button from the Datum group of the Model tab. 15. Select the recently created datum plane, to draw the sketch over it, as shown.

Note: Some time, while selecting the Plane on which you want to draw the sketch, you need to

adjust the direction for drawing sketch. For doing so, you can simply use Direction toggle arrow, as shown. Alternatively, you can click on Flip button from Sketch dialog box, as shown.

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16. Click on the Sketch View button from the Graphics toolbar to adjust Sketching Plane parallel to the screen, as shown. 17. Draw the sketch, as shown.

18. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 19. Select the Extrude tool from the Shape group of the Model tab and select the recently drawn sketch (if not selected). 20. The preview of the extrude feature will be displayed and select the Direction Toggle arrow or button from the Extrude dashboard to change the direction of the extrude feature (if required).

21. Select the

option from the Extrude dashboard, as shown.

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22. Select the surface, up to which you have to extrude the sketch. 23. The preview of the extruded feature will be displayed.

24. From the dashboard, click on the OK button to apply changes. The 3D model gets created.

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25. Click on the flat surface and then click on the Sketch (S) button from the Shortcut displayed to enter in the Sketching Environment, as shown 26. Click on the Sketch View the screen, as shown.

button from the Graphics toolbar to adjust Sketching Plane parallel to

27. Select the Circle tool from the Sketching group of the Model tab. 28. Move the cursor over circular edge to generate its center and draw a circle, as shown.

29. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 30. Click on the Extrude tool from the Shape group of the Model tab and select the recently drawn sketch (if not selected). 31. The preview of the extrude feature will be displayed and select the Direction Toggle arrow or button from the Extrude dashboard to change the direction of the extrude feature (if required). 32. Select the

option from the Extrude dashboard, as shown.

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33. From the dashboard, select OK to apply changes and display the 3D model created, as shown.

34. To display the hidden lines of the model, select the Hidden Line option from the Display Style dropdown, as shown.

35. Select the Front option from the Saved Orientations drop-down, to display the front view of the model. DATUM AND ADVANCED FEATURES

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36. Click on the Save (Ctrl+S) button from the Quick Access Toolbar to display the Save Object dialog box. The name of the sketch will be the same as entered earlier. 37. Click on the Close

button from the upper right corner to close it.

Alternatively click on the Close

button from the View tab to close the file.

Example 2 In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box. DATUM AND ADVANCED FEATURES

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3. Enter Ch5_Example02 in the Name edit box and select the Part radio button in the Type area of the New dialog box, if it is not selected. 4. Click on the OK button to enter in the Sketching environment. 5. Click on the Sketch tool and then select the Top plane or vice-versa. 6. Click on the Sketch View button from the Graphics toolbar to adjust Sketching Plane parallel to the screen, as shown. 7. Draw the sketch over it, as shown.

Note that, if you had not deselected the Show constraints and Show weak dimensions check box from the Creo Parametric Options dialog box then all the weak dimension gets displayed automatically along with constraints. You can edit these dimensions by double clicking over it and enter the value, as per your requirements.

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8. Now select OK button from the Close group of the Sketch tab to exit from the sketch environment. 9. Select the Extrude tool from the Shape group of the Model tab and select the sketch drawn. The solid part gets created and the Extrude dashboard will also be displayed.

10. Enter 20 in the Dimension edit box, as shown. 11. Next, select the Symmetric sides.

option from the Depth drop-down to extrude the sketch on both

12. From the dashboard, select OK to apply changes. The 3D model gets created.

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Now you need to create the new sketch on its back surface. Rotate the model, using MMB (middle mouse button). 13. Click on the flat surface and then click on the Sketch (S) button from the Shortcut displayed to enter in the Sketching Environment, as shown 14. Click on the Sketch View button from the Graphics toolbar to adjust Sketching Plane parallel to the screen, as shown. 15. Now draw the sketch, as shown.

Sometime, after drawing the sketch, when you select the button from the Close group of the Sketch tab, to exit from the sketch environment, if you are not allowed, by informing the Incomplete Section message box given below. The reason behind it is that, you need to add some more dimensions/constraints.

16. Now click on the button from the Close group of the Sketch tab to exit from the sketch environment. 17. Select the Extrude tool from the Shape group of the Model tab and select the recently drawn sketch. Extrude the sketch up to 12mm, as shown below. Use the

button in the Extrude dashboard to change the extrude direction, if required.

18. From the dashboard, click on the OK button to apply changes and display 3D model.

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19. Now you need to create wall features over the model. Rotate the model using MMB, if required. 20. Again, select the flat surface of the model, and select the Sketch (S) button to enter in the Sketching environment, as shown. 21. Draw the sketch, using line, fillet and arc tools. Also, apply all possible dimensions and constraints, as shown.

22. Again, click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 23. Select the Extrude tool from the Shape group of the Model tab and select the recently drawn sketch. 24. Extrude the sketch up to 12 as discussed above. 25. From the dashboard, click on the OK button to apply changes and display 3D model.

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You need to create the second wall, which you can easily create using the Mirror tool. Before that, you need to create a plane, which you can then use it as a reference plane while using the Mirror tool. 26. Select the Plane tool from the Datum group of the Model tab and select the surface of the model, as shown.

27. A datum plane on the selected surface get created along with the Datum Plane dialog box, as shown.

28. Drag the plane towards right, using the LMB (left mouse button).

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29. Double click on the dimension and enter 32 in the edit box, as shown. Alternatively, you can enter 32 in the Translation edit box in the Datum Plane dialog box.

30. Press the OK button from the dialog box or press the MMB. The datum plane gets created.

31. Select the recently created wall surface from the Model Tree to mirror it. 32. Next, activate the Mirror tool from the Editing group of the Model tab to display the Mirror dashboard. 33. Now select the datum plane recently created, as shown.

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34. Press the MMB, the second wall feature get created. Alternatively, you can click on the OK button from the Mirror dashboard.

35. Now you need to apply fillets to some of the sharpen corners of the models. 36. Click on the Round button from Engineering group of the Model tab, the Round dashboard get displayed. 37. Enter 20 in the edit box of the dashboard displayed.

38. Now select the corners, as shown.

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39. Press the MMB or click on the OK button from the dashboard to display the 3D model with round feature.

40. Save and close the file.

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Questions: 1. How can you create an offset plane? 2. Which tool is used to create a Datum Axis and how can you create a Normal axis? 3. What is the difference between Round tool and Auto Round tool? 4. What is the procedure of using Corner Chamfer tool? 5. What is the use of Shell tool? 6. What are the types of Rib tools and what are their uses?

Exercises: Exercise 1

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Exercise 2

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Chapter 06: Hole Features and Pattern Geometry So far, all of the features that were covered in previous chapter were based on two-dimensional sketches. However, there are certain features in Creo Parametric that do not require a sketch at all. Features that do not require a sketch are called Dress-Up or Placed features. You can simply place them on the models. However, you must have some existing geometry to add these features. Unlike a sketchbased feature, you cannot use a Dress-Up feature for a first feature of a model. For example, to create a Mirror feature, you must have an already existing feature to be mirrored or to create a Pattern feature, you must have an already existing feature to be patterned. In this chapter, you will learn how to add Holes and Dress-Up features to your design. The topics covered in this chapter are:  Hole features  Creating Standard Hole features  Creating Tapered Hole  Creating mirror feature  Creating Pattern feature

Hole As you know, it is possible to use the Extrude tool to create cuts and remove material. But, if you want to drill holes that are of standard sizes, the Hole tool is a better way to do this. The reason for this is it has many hole types already predefined for you. All you have to do is choose the correct hole type and size. The other benefit is when you are going to create a 2D drawing, Creo can automatically place the correct hole annotation.  Activate the Hole tool (Model > Engineering > Hole) from the ribbon to display Hole dashboard. Some of the important options available in the Hole dashboard and procedure of creating various types of hole features are discussed next.

Creo Parametric 7.0 Step-By-Step Guide

Create simple hole

This button is selected to use to create a simple hole. This is selected by default.

Create standard hole

This button is selected to create standard holes which are based on industry standard fastener tables.

Use predefined rectangle as drill hole profile

This button is selected to use predefined rectangle as drill hole profile.

Use standard hole profile as drill hole profile

This button is selected to use standard hole profile as drill hole profile.

Diameter Value Edit box

The Diameter Value edit box in the dashboard allows you to enter required diameter value for drilled hole.

Depth Value drop-down

The working of the options available in the Depth Value drop-down in the Hole dashboard is same as that of these options available in the Extrude dashboard, discussed earlier in this book.

Depth Value Edit box

The Depth Value (Dimension) edit box in the Hole dashboard is used to enter the depth value for the hole feature, as per your requirements.

Creating Simple Hole

To create a simple hole, you can use the Create simple hole button from the Hole dashboard. It is selected by default. Various types of holes created using this tool are discussed next.

Create a Linear hole To create a linear hole.  Activate the Hole tool (Click on Model > Engineering > Hole on the ribbon) to display the Hole dashboard.

 Click on the flat surface to place hole over it and display preview of hole feature.

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 Click on the Placement tab and then click in the Offset References area under it to generate reference distances, as shown.

 Press and hold the Ctrl key and select the two flat surfaces one by one to generate reference distance between the Hole placed and the selected faces.  Both the distances generated get visible in the dashboard as well as in the drawing area.

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 You can edit these distance values generated and enter as per your requirements by two methods. -

Click on the dimensions/distance values in the Offset References area in the dashboard and enter the required one. Alternatively, double click on the distance values generated in the drawing area and enter the required distances, as shown.

Note: Before placing a hole feature, if you have placed a datum point at any required location and then while placing a hole feature, you can directly select it to place hole there, without generating the reference distances.

 From the dashboard, click on the OK feature get visible.

button to apply changes. The 3D model with linear hole

Create a Radial Hole

To create a Radial and Diameter hole feature.  Click on the Model > Engineering > Hole to display Hole dashboard.  Click on the cylindrical surface, as shown.  Right-click and select the Offset References Collector radio button, as shown.

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 Enter the diameter value in the Diameter Value edit box and depth in the Depth Value edit box in the Hole dashboard, as per your requirements.

 Press and hold the Ctrl key and select the two flat surfaces one by one to generate reference distance of hole feature from the selected surfaces, as shown.

 Click on the Placement tab and edit the reference dimension, if required, as shown.

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 From the dashboard, click on the OK feature get visible.

button to apply changes. The 3D model with Radial hole

Create a Diameter Hole

To create a Diameter hole feature.  Activate the Hole tool.  Click on the flat surface to display preview of the hole feature over it, as shown.

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 Select the Diameter option from the Type drop-down, as shown.  Click in the Offset Reference area for generating reference distances/dimensions, as shown.

 Press and hold the Ctrl key and select the flat surface and the axis of another reference hole to generate the reference distance value along with the angular value, as shown.  Double-click over the values generated and enter the value as per your requirements, as shown. Alternatively, you can change the reference dimension value in the dashboard, as shown.

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 From the dashboard, click on the OK button to apply changes. The 3D model with Diameter hole feature get visible.

Coaxial Hole

To create a coaxial hole feature.  Activate the Hole tool (Model > Engineering > Hole) to display Hole dashboard.  Select the axis of the model along which you want to place the Coaxial hole.

 The coaxial hole along with diameter value will be displayed and you can edit the diameter value of the hole, if required.  You can also select the suitable option from the Depth Value drop-down.

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 Press and hold the Ctrl key and select the flat surface or Plane.  From the dashboard, click on the OK button to apply changes. The 3D model with Coaxial hole feature get visible.

Creating Standard Hole To create a standard hole feature.

 Activate the Hole tool (Model > Engineering > Hole) from the Ribbon.  Click on the Create standard hole button from the Hole dashboard, as shown.

 All the options required to create a Standard hole get visible in the dashboard, as shown.

 Click on the flat surface to place hole over it.  Click in the Secondary References area under the Offset References area for secondary references. HOLE FEATURES AND PATTERN GEOMETRY

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 Press and hold the Ctrl key and select the other two surfaces one by one to generate distances of hole feature from the selected surfaces, as shown.  Both the distances generated get visible in the dashboard as well as in the drawing area, as shown.

 You can edit these distance values and enter as per your requirements by two methods. -

Click on the dimensions in the dashboard and enter the required one. Alternatively, double click on the distance values generated in the drawing area and enter the required distances.

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 Now deselect Adds tapping button and Adds counterbore

button and then select the Create clearance hole buttons from the dashboard, as shown.

 Select the ISO from the Thread Type drop-down, as shown.  Now, click on the Shape tab to display specifications of standard hole, as shown.

 Increase the screw size from the Screw Size drop-down to make Drilled hole diameter edit box active and display standard hole feature, as shown.

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 Now enter the dimension values of the standard hole in their corresponding boxes to display preview of the standard hole feature.

 From the dashboard, click on the OK button to apply changes. The 3D model with standard hole (Counterbore hole) feature get visible, as shown.

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Similarly, for creating Countersink hole, you need to select the Adds countersink from the dashboard and enter the details related to it under the Shape tab, as shown.

button

Creating Tapered Hole To create a Tapered hole feature.  Activate the Hole tool.  Click on the Create standard hole

button to display all the option required for it.

 Click on the Create tapered hole button and then click on the Adds counterbore button.  Select the required option from the Thread Type drop-down, as shown.  Select the required option from the Screw size drop-down.

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 Click on the flat surface to place hole over it.

 Enter the required depth in the Depth Value edit box. You can enter it any time.  Click on the Placement tab and then click under the Offset References area.  Select the two surfaces to generate reference distances.

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 Click on the OK button from the dashboard to display preview of the tapered hole placed over the 3D model.  For better visibility of Tapered hole feature, change the display style and orientations from the Graphics toolbar.

Mirror This tool is useful while designing a symmetric part by saving your time. By using this tool, you can copy individual features of the entire body. For creating a mirror feature in 3D geometry, you need to have plane or face to use it as the mirroring element. You can use default planes, model faces or sometime you need to create a datum/reference plane.

Mirror a Feature/Features of a Model    

Select the Feature/Features of the model to mirror from the Model Tree on left. Click on the Mirror tool (Model > Editing > Mirror) from the Ribbon. Select the Plane/Face. From the dashboard, click on the OK button to apply changes and display the part with Mirror Feature.

Now, if you make changes to original feature, the mirror feature will be updated automatically, as shown. HOLE FEATURES AND PATTERN GEOMETRY

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Mirror the Whole Model

If the part you are creating is completely symmetric, you can save more time by creating half of it and mirroring the entire geometry rather than individual features.  Click on the entire geometry from the drawing area. Alternatively, you can select it from the Model Tree.  Select the Mirror tool and select the Plane/Face, as shown.  From the dashboard, click on the OK button to apply changes or press the MMB. The part will Mirror Feature get displayed.

Pattern Feature The Pattern tool is used to create replica of a feature using different options Dimension, Direction, Axis, and Fill, available in the drop-down in Pattern dashboard. You can save much time using this tool as you can create multiple copies of a feature. Also, if you make changes to original feature, the pattern/child features will be updated automatically.

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The Options available in the Pattern dashboard are discussed next.

Dimension Patterns

The Dimension option in the Pattern dashboard is selected by default and is used to create the pattern feature by using dimensions attached with it.  Select the feature to be patterned.  Select the Pattern tool (Model > Editing > Pattern) from the Ribbon to display Pattern dashboard.

 Select one of the Dimension from the drawing area to define it as First direction pattern dimensions for creating Pattern members. Also enter the value in the edit box displayed, which will be the distance between the pattern members.

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Note: You have to enter the value with negative (-) symbol because the pattern members get created in the opposite direction of the selected dimension.

 Press the ENTER key from the keyboard to display the preview of the pattern member. By default, two pattern features will be displayed because the number of members is 2 in the dashboard.  Enter the number of the pattern features in the edit box in Pattern dashboard, as per your requirements.  Press the ENTER key from the keyboard to display preview of pattern members.

 Now from the Pattern dashboard click on the Second direction pattern dimensions box to activate it and select the second dimension from the drawing area.

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 Enter the value in the edit box displayed, which will be the distance between the pattern members in second direction.  Press the Enter key from keyboard to display the Pattern members in both directions.

 Again, enter the number of the pattern members in the edit box in Pattern dashboard, as per your requirements.  Press the Enter key from the keyboard to display preview of pattern members.

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 From the dashboard, click on the OK button or press the MMB to apply changes and display model with Pattern members in both directions. For better visibility model is rotated.

Editing the Dimension Pattern

After creating the Pattern features, if any time need to make changes in it, you can edit it.  Right click on the Pattern Feature in the Model Tree of the Creo Parametric and select an Edit the definition of the selected object button from the shortcut menu displayed.

 The Pattern dashboard will be displayed and make the changes in it, as per your requirements (changing number of Pattern members, distances, and so on). HOLE FEATURES AND PATTERN GEOMETRY

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 After editing, click on the OK button from dashboard or press the MMB to apply changes. The part with edited Pattern members gets visible.

Direction Patterns

The Direction option in the Pattern dashboard is used to create the pattern feature by defining directions. Directions can be defined by selecting Plane, edge, or axis.  Select the feature to be patterned.

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 Select the Pattern tool (Model > Editing > Pattern) from the Ribbon to display Pattern dashboard.  Select the Direction option from the drop-down in the Pattern dashboard.

 Select the edge of the model to define it as First direction reference for the Pattern Feature and to display the pattern feature. You can also select plane or axis to define it as direction.  Click on the

buttons adjacent to it, if required.

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 Enter the number of Pattern Members you want to pattern in Direction 1.  Enter the value for spacing between the Pattern Members.  Next click on the Second direction reference box in the dashboard and select the second edge to define it as Second direction reference.  Similarly, enter the number of the Pattern Members and spacing between them in their respective edit boxes to display preview of pattern features in second or both directions.

 From the dashboard, click on the OK button to apply changes or press the MMB. The part will Pattern Feature get displayed. For better visibility you can rotate the model using MMB.

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Axis Patterns

The Axis option in the Pattern dashboard is used to create the rotational patterns across a rotational axis.  Select the feature to be patterned.

 Click on the Pattern tool (Model > Editing > Pattern) from the Ribbon to display Pattern dashboard.  Select the Axis option from the drop-down in the Pattern dashboard.

 Select the center axis from the drawing area to display the round patterns, as shown.  Enter number of Pattern members in first direction.  Next enter the angle between each pattern member. Alternatively, you can select the adjacent to it.

button

 Now enter 2 in the “Number of Pattern Members in second direction” edit box and also enter the radial distance, as per your requirements. HOLE FEATURES AND PATTERN GEOMETRY

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You can enter the number of pattern members in second direction, as per your requirements.

 From the dashboard, click on the OK button or press the MMB to apply changes and display the model with pattern features with respect to the center axis.

Fill Patterns

The Fill option in the Pattern dashboard is used to create the pattern features by filling the sketch area by the selected Pattern member.  Select the feature to be patterned.  Click on the Pattern tool (Model > Editing > Pattern) from the Ribbon to display the Pattern dashboard.  Select the Fill option from the drop-down in the Pattern dashboard to display the options related to use fill option. HOLE FEATURES AND PATTERN GEOMETRY

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 Click on the Reference tab and then click on the Define button.

 Next click on the flat surface and press the MMB to enter in the Sketch mode.

 Draw the sketch, as shown.  Select OK button from the Close group of the Sketch tab to exit from the Sketch environment and to display the preview of the pattern features filling the area of the sketch drawn.

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 You can change the grid templates in order to define different shapes to the Pattern Members: Square pattern, Diamond pattern, Hexagon pattern, Concentric circle pattern, Spiral pattern, and along the sketched curves

The preview of pattern features with some of the different grid templates are shown.

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 From the dashboard, click on the OK button or press the MMB to apply changes and display the model with round pattern features.

Table Patterns The Table option is used to create pattern features by specifying the dimensions of the instances in a table.  Draw two extruded features with the dimensions shown. -

A rectangular surface 200X200 with extruded upto 20) Draw a circle of radius 10, at distance 30 from both edges and extrude upto 30

 Select the part to be pattern and activate the Pattern tool.  Select the Table option from the drop-down in the Pattern dashboard to display the options related to use Table option.

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 Press and hold the Ctrl key and select the reference dimensions one by one, as shown.

 Next click on the Edit button from the dashboard to display the Pro/TABLE window, as shown.

 In column C1 and under ! idx, enter the serial/index umbers.  In column C2 and C3 or in the boxes adjacent to the boxes in which you enter index numbers, enter distances along selected dimensions in both directions.

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 Similarly enter other entries to create pattern features in both directions, as shown.  Now select the File > Save Shift+F12 from the Pro/TABLE window displayed, as shown.

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 Select the Close button from the top right of the Pro/TABLE window to exit it and display the preview of pattern features, as shown.  Click on the OK button from the dashboard to display 3D model with pattern features.

Curve Patterns

The Curve option in the Pattern dashboard is used to create the Pattern features across a curve.  Select the feature to be patterned.

 Select the Pattern tool (Model > Editing > Pattern) from the Ribbon to display Pattern dashboard.  Select the Curve option from the drop-down in the Pattern dashboard.  Click on the Define button from the References tab.

 Click on the flat surface of the model to draw curve over it for creating Pattern features and press MMB. HOLE FEATURES AND PATTERN GEOMETRY

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 Select the Spline tool (Sketch > Sketching > Spline) from the Ribbon.  Draw the curve and press MMB to deactivate the Spline tool.  Choose the OK button from the Close group to exit from the Sketching environment and to display the preview of the pattern features according to the sketch drawn.

Note that, you can enter the required Spacing value between members, in the edit box adjacent to Spacing button of the dashboard.  From the dashboard, click on the OK button or press the MMB to apply changes and display the model with pattern features with respect to the curve.

Point Patterns

The Point option in the Pattern dashboard is used to create the Pattern features with respect to the previously defined points.    

Select the feature to be patterned. Select the Pattern tool (Model > Editing > Pattern) from the Ribbon to display Pattern dashboard. Select the Point option from the drop-down in the Pattern dashboard. Click on the Define button from the References tab.

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 Click on the flat surface of the model to define points over it for creating Pattern features and press MMB.  Select the Point tool (Sketch > Datum > Point) from the Ribbon.  Click at different locations over the flat surface to define several points and press MMB to deactivate the Point tool.  Click on the OK button from the Close group to exit from the Sketching environment and display the preview of the Point pattern features with respect to the previously defined points.

 From the dashboard, click on the OK button or press the MMB to apply changes and display the model with Point pattern features.

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Examples: Example 1 In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New (

) button from the Quick Access Toolbar to display the New dialog box.

Alternatively press Ctrl + N key from the keyboard to display the New dialog box. 3. Select the Part radio button in the Type area of the New dialog box and enter Ch6_Example01 in the Name edit box. 4. Click on the OK button from the dialog box to enter in the sketching environment. 5. Click on the Sketch button from the Datum group of the Model tab and select the Top plane to draw sketch over it. 6. Select the Top Plane and using the Line tool from the Sketching group, draw the sketch with centerline, as shown. 7. Activate the Normal tool and apply dimensions to the sketch created by you (dimensions may vary).

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8. Press the MMB to deactivate the Normal tool. Alternatively, you can choose the Select button from the Operations group. 9. Now, press and hold the LMB and drag the window over the sketch to select all dimensions. All the selected dimensions turn green, as shown.

10. Select Modify tool from the Editing group to display the Modify Dimensions dialog box with all the dimensions of the sketch. 11. You can now modify all the dimensions by entering the required values in their corresponding edit boxes.

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Note that the dimension edit box that you click in the dialog box, the same dimension gets highlighted in the blue box in the drawing area. 12. Deselect the Regenerative check box and enter the required dimensions in their respective edit boxes in the dialog box.

13. Modify all the dimensions as shown.

14. Now select button from the Close group of the Sketch tab to exit from the sketch environment. 15. Select the Revolve tool from the Shapes group to display the Revolve dashboard and the revolve feature. HOLE FEATURES AND PATTERN GEOMETRY

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16. The preview of the revolve feature will be displayed with 360 angles.

17. From the dashboard, click on the OK button to apply changes and display 3D revolve model.

18. Now, click on the flat surface and then click on Sketch (S) button from the shortcut displayed to enter in the Sketching Environment, as shown. 19. Click on the Sketch View to the screen, as shown.

button from the Graphics toolbar to adjust Sketching Plane, parallel

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20. Activate the Centerline tool and draw the centerline, as shown. 21. Next, using the Line and Arc tools from the Sketching group draw the sketch, as shown. 22. Also using the Normal tool, apply the dimensions.

23. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 24. Activate the Extrude tool from the Shapes group to display the Extrude dashboard. 25. Enter 3 in the Depth edit box and select the sketch to display the preview of the Extrude feature. Click on the

button, if required.

26. From the dashboard, click on the OK button to apply changes and display 3D model.

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27. Activate the Axis tool (Model > Datum > Axis) to create datum axis, as shown. 28. Click on the round surface to generate center axis with it.

29. Click on the Hole tool (Model > Engineering > Hole) to display Hole dashboard. 30. Click on the Create standard hole button of the dashboard, as shown.

button and deactivate the Adds tapping

31. Next, click on the Create clearance hole and Adds counterbore button, as shown. 32. Select ISO in the Thread type drop-down and select M1.4x.3 in the Screw size drop-down from the dashboard, as shown.

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33. Click on the flat surface to display preview of hole over it, as shown. 34. Next click on the axis to make hole concentric to it, as shown.

35. Click on the Shapes tab and enter the specifications of the Standard hole feature, as shown. 36. Next press and hold the Ctrl key and click on the flat surface of the model again to display preview of the Standard hole feature.

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37. From the dashboard, click on the OK to apply changes and display model with standard hole feature.

38. Press and hold the Ctrl key and select the two features from the Model Tree, as shown. 39. Select the Geometry Pattern (Model > Editing > Pattern > Geometry Pattern) to display Geometry Pattern dashboard.

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40. Select the Axis option from the dashboard and select the centeral axis of the model for creating pattern feature. 41. Enter 3 for the Number of Pattern members and 120 as Angle between Pattern members to display preview of pattern feature, as shown. Note that you can click on the members automatically.

button to adjust a uniform angular distance between Pattern

42. From the dashboard, click on the OK button to apply changes and display model with pattern members.

43. Select the Save button from the Quick Access Toolbar to save the file. 44. Select the Close button (View > Window > Close) from the Ribbon to close the file.

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Example 2 (Millimetres) In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. 3. 4. 5. 6.

Click the New ( ) button from the Quick Access Toolbar to display the New dialog box. In the New dialog box, select the Part radio button in the Type area, if not selected. Enter Ch6_Example02 in the Name edit box and deselect the Use default template checkbox. Click on the OK button to display the New File Options dialog box. Select the mmns_part_solid option from the New File Options dialog box and click on the OK button from it to enter in the Sketching environment.

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7. Click on the Sketch button from the Datum group of the Model tab and select the Top Plane. 8. Draw the sketch, as shown.

9. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 10. Activate the Extrude tool from the Shapes group to display the Extrude dashboard. 11. Select the sketch and enter 50 in the Depth edit box to display the preview of the Extrude feature. 12. From the dashboard, click on the OK button to apply changes. The 3D model gets visible.

13. Click on the top surface of model and then click on the Sketch (S) button from the shortcut displayed to enter in the Sketching Environment. 14. Click on the Sketch View button from the Graphics toolbar to adjust Sketching Plane, parallel to the screen, as shown. 15. Draw the sketch and apply dimensions to it, as shown.

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16. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 17. Activate the Extrude tool from the Shapes group to display the Extrude dashboard. 18. Enter 30 in the Depth edit box. 19. Select the Remove Material button to display the preview of the Extrude cut feature.

20. From the dashboard, click on the OK button to apply changes and display 3D model with Extrude cut feature.

21. 22. 23. 24.

Select the Hole tool from the Engineering group to display Hole dashboard. Click on Standard button and deactivate the Add tapping button from the dashboard, as shown. Now activate the Clearance and Counterbore buttons, as shown. Select the ISO from the Thread Type drop-down and select M1.4x.3 from the Screw Size drop-down of the dashboard, as shown. 25. Click on the Shape tab from the dashboard to display parameters of the hole feature. 26. Enter the dimension values of the Hole feature in their respective edit boxes, as shown. 27. Click on the flat surface to place hole over it, as shown.

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28. Select the Placement tab from the dashboard. 29. Click under the Offset Reference area. 30. Press and hold the Ctrl key and select the two face/edges for displaying reference distances between hole and selected faces/edges, as shown. 31. From the drawing area, double click on the reference distances displayed and enter the required distances, as shown. Alternatively, you can change it from the dashboard, under the Offset Reference area, as shown.

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32. From the dashboard, click on OK button to apply changes and display 3D model with Counterbore Hole feature.

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33. Select the Extrude cut feature from the Model Tree and activate the Pattern tool from the Editing group. 34. Select the Direction option from the Pattern dashboard.

35. Select the edge of the model to display preview of Pattern members.

36. Enter 100 in the Distance edit box in the dashboard to display preview of Pattern member at specified distance, as shown.

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37. Click in the Second direction reference box in the dashboard and select the other edge, as shown. 38. Enter 55 in the Distance edit box in the dashboard to display preview of Pattern member in second direction at specified distance. Click on the

button to flip direction of the Pattern feature, if required.

39. From the dashboard, click on the OK button to apply changes and display 3D model with Pattern feature in both directions.

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40. Select the Hole feature from the Model Tree and then activate the Pattern tool. 41. The preview of the Pattern feature of Hole feature get visible at the distances applied for the previous Pattern feature.

42. Select the Direction option from the Pattern dashboard 43. Follow the same steps as discussed earlier to display preview of Hole Pattern feature, as shown.

44. From the dashboard, click on the OK button to apply changes. The 3D model with hole feature get visible, as shown.

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45. Again, activate the Hole tool and click on the front flat surface of the model to place the hole feature over it.

46. Activate the Create standard hole button from the dashboard.

button and deactivate the Adds tapping

47. Now activate the Create clearance hole and Adds counterbore buttons. 48. Select the ISO from the Thread Type drop-down and select M1.4x.3 from the Screw Size drop-down of the dashboard. 49. Click on the Shape tab from the dashboard to display parameters of the hole feature. 50. Enter the dimension values of the Hole feature in their respective edit boxes, as shown. 51. Click on the flat surface to place hole over it.

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52. Select the Placement tab from the dashboard. 53. Click under the Offset Reference area. 54. Press and hold the Ctrl key and select the two face/edges for displaying reference distances between hole and selected faces/edges, as shown.

55. From the drawing area, double click on the reference distances displayed and enter the required distances, as shown. Alternatively, you can change it from the dashboard, under the Offset Reference area. 56. From the dashboard, click on the OK button to apply changes and display 3D model with counterbore hole feature.

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57. Now select the Round tool from the Engineering group to display Round dashboard. 58. Enter 2 in the Radius edit box and select the edge of the model, as shown. Note that to make hidden lines visible, here we have selected the Hidden Line option from the Display Style drop-down.

59. Now select the Shading With Edges option from the Display Style drop-down to display the model with round features, as shown.

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60. Click on the flat surface and then select the Sketch (S) button from the shortcut displayed, to enter Sketching Environment. 61. Activate the Centerline tool and draw the centerline, as shown. 62. Draw the sketch and apply all possible constraints and dimensions with respect to the centerline created.

63. Now select OK button from the Close group of the Sketch tab to exit from the sketch environment. HOLE FEATURES AND PATTERN GEOMETRY

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64. Activate the Extrude tool from the Shapes group to display the Extrude dashboard. 65. Draw the handle in backward direction to display Extrude cut feature. 66. Select the Remove Material button if it is not selected.

67. From the dashboard, click on OK button to apply changes and display 3D model with Extrude cut feature.

68. Again, activate the Hole tool. 69. Activate the Create standard hole button and enter 20 in the Drilled depth value edit box. 70. Select M12x1.5 from the Screw Size drop-down of the dashboard. 71. Click on the surface to place the hole feature, for dimensions refer to the figure in the starting of this Example.

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72. From the dashboard, click on the OK button to apply changes. The 3D model with Extrude cut feature get visible.

73. Activate the Plane tool from the Datum group and click on the right surface of the model.

74. Move the plane towards left by dragging its left and enter 65 in the Distance edit box. 75. Select the OK button from the Datum Plane dialog box to display datum plane.

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76. Select the Hole feature and activate the Mirror tool from the Editing group. 77. Select the datum plane to display preview of the mirror feature, as shown.

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78. From the dashboard, click on the OK button to apply changes to display 3D model with hole mirror feature.

79. Save and close the file.

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Questions: 1. How can we create a countersink hole? 2. Why we use Offset Reference area in the Hole dashboard? 3. What is a tapered hole? 4. How can we create pattern features using the Axis option and Dimension options from the

Pattern dashboard? 5. Which tool is used to create round edges of a 3D model? 6. What is the use of Adds tapping button in the Hole dashboard?

Exercises: Exercise 1

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Exercise 2

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Chapter 7: Sweep and Blend Features Sketch-Based features are used to create basic and simple parts. Most of the times, they form the base for complex parts as well. These features are easy to create and require a single sketch. Now, you will learn the tools to create these features in this chapter. The topics covered in this chapter are:  Sweep Feature  Helical Sweep Feature  Swept Blend Feature  Blend Feature  Rotational Blend Feature

Sweep Tool

The Sweep tool is used to create a sweep based features by sweeping/extruding a section/profile, along a trajectory/path. This tool allows you to create a solid, cut & surface feature for the same.  Draw the sketch on the Top plane, as shown.

 Select the Sweep tool (select Model > Shapes > Sweep) from the Ribbon to display Sweep dashboard.  Click on the sketch created to select or highlight it, if it is not selected.

Creo Parametric 7.0 - Step-By-Step Guide

 Next, click on the Create or edit sweep section sketching environment.  Click on the Sketch View screen, as shown.

button of the dashboard to enter in the

button from the Graphics toolbar to make sketch plane parallel to

 Select the Palette button from Sketching tab, to display Sketcher Palette.  Double click on the 8-Sided Octagon and click in the drawing area to place it, as shown. You can also place it by using drag and drop method to place it.

 Press the MMB to deactivate the Palette tool.  Select the Coincident option from the Constrain group of the Sketch tab.  Now select the midpoint of the recently drawn octagon, as shown.  Next, select the point of the trajectory and press MMB to coincide the octagon with it, as shown.

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 Draw a circle over it and press the MMB.

 Click on the

button from the Close group to exit from the sketching environment.

The preview of the sketch feature will be displayed, as shown. Using the MMB, the model is rotated for its better visibility, as shown.

 From the dashboard, click on the

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button to apply changes and display the sweep feature.

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Using the Sweep tool for Removing Material The Sweep tool can be also used for removing material by sweeping/extruding a section/profile, along a trajectory/path.  Draw the sketch on the surface of the model, as shown.

 Select the Sweep tool (select Model > Shapes > Sweep) from the Ribbon to display Sweep dashboard.

 Select the previously drawn sketch, as shown.

 Click on the Create or edit sweep section button from the Sweep dashboard to draw a profile sketch.  Click on the Sketch View button from the Graphics toolbar to make sketching plane parallel to the screen.  Activate the Circle tool and draw the circle, using the center point defined by the intersection of the two centerlines.

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 Select the OK

button from the Close group to exit from the sketching environment.

Also, the preview of the sweep feature will be displayed, as shown.

 Click on the Remove Material as shown.

button of the dashboard to apply sweep cut feature,

 Click on the button of the dashboard to apply changes. The 3D model with sweep cut feature get displayed, as shown.

Note: To create thin feature, you can select the Create a thin feature

button from the Sweep

dashboard.

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Helical Sweep The Helical Sweep tool is used to create a helical sweep based features like springs, threads. Also, this tool allows you to create a solid, cut & surface feature for the same. To create a helical sweep feature, you need to define a trajectory, a section, and a pitch. The trajectory defines the path along which the section/profile sweeps. The pitch defines the center-to-center distance between sections along the trajectory.  Select the Helical Sweep tool from the Sweep drop-down to display Helical Sweet dashboard.

 Select the References tab from the Helical Sweep dashboard and select the Define button to draw a trajectory.

 Select the Front plane and press the MMB (middle mouse button) to enter the sketching environment.

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 Click on the Sketch View button from the Graphics toolbar to make sketching plane parallel to the screen.  Draw the trajectory (path) with centerline. Press the MMB to exit from Line tool.

 From the Close group, click on the button to exit from the sketch environment.  Select the trajectory, if not selected by default.

 Select the shown.

button from the Helical Sweep dashboard and draw the section/profile sketch, as

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 Click on the OK shown.

button from the Close group to display preview of the helical sweep feature, as

 You can use the Create a thin feature as shown.

button from the dashboard to create the thin feature,

 You can enter the required thickness value in the Thickness Value edit box corresponding to the Create a thin feature

button.

 Use the button and helical sweep cut feature, as shown.

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button to toggle between the directions of

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 Click on the OK button of the dashboard to exit it and display the Helical sweep feature, as shown.

Using the Helical Sweep tool for Removing Material

The Helical Sweep tool can be also used in creating Helical Sweep Cut features, in removing material from the existing feature created.  Create a model, as shown.

 Activate the Helical Sweep tool from the Sweep drop-down to display Helical Sweet dashboard.  Select the Placement tab from the Helical Sweep dashboard and select the Define button to draw a trajectory.

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 Select the plane (as shown) and press the MMB (middle mouse button) to enter the sketching environment.

 Select the Sketch View to the screen.

button from the Graphics toolbar to adjust the selected plane parallel

 Select the References tool from the Setup group of the Sketch tab and click on the edges, as shown.  Draw the centerline and trajectory (path), as shown.  Press the MMB to exit from Line tool.

 From the Close group, select the button to exit from the sketch environment.  Select the trajectory, if not selected by default.  Select the shown.

button from the Helical Sweep dashboard and draw the section/profile sketch, as

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 Select the button from the Close group.  The preview of the helical sweep feature will be displayed.  Select the Remove material cut feature, as shown.

button from the dashboard to display the 3D model with helical

 You can enter the pitch value in the Pitch Value edit box corresponding to the Create a thin feature button, as per your requirements.  Use the button and the of helical sweep cut feature, as shown.

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button to toggle between the directions

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 You can use the

button from the dashboard to preview the feature as solid model, as shown.

 Click on the OK button from the dashboard to apply changes and display the model with helical sweep cut feature, as shown.

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Swept Blend

The Swept Blend tool in the Creo is used in creating the feature that includes both features of sweep and blend.  Draw the sketch on the Front plane, as shown.

 Select the Swept Blend tool from the Shapes group of the Model tab to display the Swept Blend dashboard, as shown below.  Select the sketch (trajectory) drawn, if it is not selected by default.  Select the Sections tab from the dashboard, as shown.  Click on the Sketch button from it.  Draw the sketch, as shown.

   

Click on the button from the ribbon, to exit from the sketching environment. Now click on the Insert button from the dashboard, as shown. Select the new point/location to create another sketch/section, as shown. Select the reference point.

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 Select the Sketch button from the dashboard and draw another sketch.

 Select the button from the ribbon again, to exit from the sketching environment.  Again, select the Insert button from the dashboard and select another point.

 Select the Sketch button from the dashboard and draw another sketch/section.

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 Click on the OK button from the ribbon again to exit from the sketching environment.  Use the MMB and rotate the model to view the partial view of the model.

 Again, select the Insert button from the dashboard and select another point.

 Select the Sketch button from the dashboard and draw another sketch/section, as shown.

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 Select the OK button from the ribbon again, to exit from the sketching environment.  Use the MMB and rotate the model to view the partial view of the model.

 Click on the OK button of the dashboard to display the final model created, as shown.

Blend Tool

The Blend tool in the Creo is used to create a continuous feature by creating two or more sections joined through transitional face at their edges. The number of entities should be same in each section used for creating blend feature. Sweep and Blend Features

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 Select the Blend tool from the Shapes drop-down of the ribbon, as shown.

 Click on the Sections tab from the Blend dashboard.  Click on the Define button to define the first section (Section 1) for creating a blend feature.

 Select the Top plane (depends as per your requirement) and press the MMB.  Select the Sketch View button from the Graphics toolbar to adjust the selected plane parallel to the screen.  Draw the sketch, as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. You will be prompted to define another section. Use the mouse MMB to rotate the planes in order to understand the concept of distance between sections. You can change the distance value from the dashboard or double click on the distance value displayed in the drawing area and enter as per your requirements. Sweep and Blend Features

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 Click on the Sections tab to create another section (Section 2) for the Blend feature.  Click on the Sketch button from the dashboard, as shown.

 Draw another sketch, to define it as second section (Section 2).

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment.  Using the MMB, rotate the planes to view the preview of the Blend feature displayed properly. Sweep and Blend Features

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 Now click on the Sections tab of the dashboard again and select the Insert button from it, as shown. You will be prompted to define another section.

 Click on the Sketch button of the dashboard, to define another section (Section 3).

 Draw another sketch in order to define it as third section, as shown.

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 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment and display the preview of the bend feature. Similarly, you can create many more sections.  Now click on the OK button of the Blend dashboard to display its final view.

Editing Blend Feature

After creating the blend feature, you can also edit and make changes in it, as per your requirements.  Right click on the Blend 1 from the Model Tree on the left of the display window.  Click on the

Edit Definition (Ctrl+E) button, as shown.

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   

The preview of the model will be displayed along with the Blend dashboard. Click on the Sections tab of the dashboard. Select the section to be changed. Click on the Insert button and then select the Sketch button.

 The sketch of the selected model will be displayed, as shown.

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 Selecting the Delete Segment tool from the Editing group.  Drag the cursor over all the entities of the sketch to remove them.

 Now using the Circle tool from the Sketching group, draw a circle.

 Select the Divide tool from the Editing group, to divide the circle into four different entities (it depending upon the no of entities in other sections).  Click on the circle at four places to divide it in four entities, as shown.

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 The circle with its four points will be displayed.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment to display preview of the blend feature.

 Click on the OK button of the Blend dashboard to view its final view, as shown.

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Rotational Blend

The Rotational Blend tool is used to create the round blend feature by rotating different section about the Y-axis up to a maximum of 120-degree.  Select the Rotational Blend (Model > Shapes > Rotational Blend) tool to display the Rotational Blend dashboard.

 From the dashboard, select the Sections tab and click on the Define button, as shown.

 Click on the Top plane to draw sketch over it, as shown.  Click in the Reference box of the Sketch dialog box and then click on the Front plane to select it as reference plane, as shown. Sweep and Blend Features

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 Press the MMB to enter in the sketching environment.  Draw the sketch with centerline and select the OK button from the Close group of the Sketch tab to display Section 1 created.

 Next enter the required angle offset value in the edit boxes of the dashboard. Alternatively, you can double-click over the angle offset value in the drawing area to edit it.

 Again, click on the Sketch button from the dashboard to create Section 2.  Draw the sketch and select the OK button from the Close group of the Sketch tab to display preview of rotational blend feature. Sweep and Blend Features

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 Now from the dashboard click on the Insert button and then Sketch button to create Section3.

 Draw the sketch and click on the OK button from the Close group of the Sketch tab to display preview of rotational blend feature.

 Click on the OK button from the dashboard to display the Rotational Blend feature. Sweep and Blend Features

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Creating Rotation Blend Features using Previously Created Sketches

The Rotational Blend tool can be also used to create the round blend feature by rotating previously created sketches/sections.  Draw the below shown three sketches on three different planes, as shown.

 Select the Rotational Blend tool and select the Selected sections radio button from the Rotational Blend dashboard displayed.

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 Select one sketch and then click on the Insert button from the dashboard, as shown.  Select another sketch to display preview of the rotational blend feature, as shown.

 Click on the OK button from the dashboard to display the rotational blend feature, as shown.

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Examples: Example 1 (Millimetres) In this example, you will create the model shown below.

 Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop.  Click the New ( ) button from the Quick Access toolbar to display the New dialog box. Alternatively press Ctrl + N key from the keyboard to display the New dialog box.  Now in the New dialog box, enter Ch7_Example01 in the Name edit box and make sure that Part radio button is selected in the Type area.  Click on the OK button of dialog box to enter in the Sketching environment  Select the Top plane to draw sketch over it and click on the Sketch (S) button from the shortcut displayed, as shown.

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 Select the Sketch View button from the Graphics toolbar to adjust the selected plane parallel to the screen.  Using the Line and Fillet tools from the Sketching group and draw the sketch as shown. Also apply the given dimension.

 Click on the

button from the Close group of the Sketch tab to exit from the sketch environment.

 Now select the Sweep

tool from the Shapes group of Model tab.

Alternatively, you can also select it from the Sweep drop-down of the Shapes group of Model tab.

 Select the sketch drawn (if it is not already selected) as shown. The model after selecting is also shown.

 Now click on the Create or edit sweep section button of the dashboard, the previous sketch gets adjusted perpendicular to the screen automatically. Sweep and Blend Features

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 Draw two circles with radius 1 and 1.5, as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. The preview of the sweep feature gets visible, as shown.  Click on the OK button from the Sweep dashboard to display sweep feature, as shown.

 Click on the plane surface of the model and click on the Sketch (S) button to enter in the sketching environment, as shown.

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Now, before drawing sketch, you have to select reference edges to define center point.  Click on the References button from the Setup group of the Model tab.  Click on the circular edge to make its center point visible, as shown. Also, click on the Close button of the References dialog box displayed to accept references close it, as shown.

 Now draw the sketch (two circle entities) as shown.

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 Now using the Extrude tool, extrude the recently drawn sketch up to 1mm, as discussed in previous chapters.

 Similarly create the same feature on the other end of the sweep feature, as shown.

 Now you have to create the hole of 0.35 diameter on the extrude feature.  Again, click on the plane surface of the model and click on the Sketch (S) button to enter in the sketching environment, as shown.

 Again, using the References tool, generate the center point, as shown.  Now you have to create a construction circle.  Click on the Construction Mode button (Sketch > Sketching > Construction Mode) and then activate the Circle tool from the same group.  Draw the construction circle of 1.85 diameter to use it as reference to create sketch for hole feature. Sweep and Blend Features

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 Deselect the Construction Mode button, if it is still active and select the Circle tool.  Draw the circle of dia 0.30, as shown.

 Select OK button from the Close group of the Sketch tab to exit from the sketch environment.  Now select the Extrude tool from the Shapes group of the Model tab and select the recently drawn sketch.  Select the

option (if not selected) from the Depth Value drop down of the Extrude dashboard.

 Enter 1 in the Depth Value edit box. Also make sure that

button is also selected.

 Click on the button to flip/change direction of extrude cut, if required.  The preview of the cut feature of hole will be displayed, as shown.

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 Press the MMB to display the hole feature, as shown.

 Now you have to use the Pattern tool to create 5 more holes on the same surface.  Select the Axis Display check box from the Datum Display Filters drop down, if it is not selected.

 Select the hole feature and then click on the Pattern button display preview of pattern feature, as shown. Sweep and Blend Features

from the shortcut displayed to

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 Select the Axis option from the Sets the type of pattern drop-down, as shown.

 Select the Axis, as shown.  The preview of the hole pattern features will be displayed.

 Now enter 6 in the Enter the number of the pattern members in the first direction edit box and 60 in the Enter the angle between pattern members edit box. The preview of pattern feature with new entries get visible, as shown. Sweep and Blend Features

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 Press the MMB to display all the hole features.

 Similarly create the same hole features on the other side of the sweep feature, as shown.

 Save and close the file.

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Example 2 (Millimetres) Using Swept Blend In this example, you will create the model shown below.

 Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop.  Click on the New ( ) button from the Quick Access toolbar to display the New dialog box.  Enter Ch7_Example02 in the Name edit box and make sure that the Part radio button in the Type area is selected.  Click OK from the dialog box to enter in the sketching environment.  Select the Front plane to draw sketch over it and click on the Sketch (S) button from the shortcut displayed, as shown.  Using the draw tool (Line, Arc and Fillet tools) from the Sketching group, draw the sketch with centerline as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment.  Select the Revolve tool from the Shapes group of the Model tab, the model will rotate at an angle of 360 degrees and its preview will be displayed.  Click on the OK button from the Revolve dashboard to display its final view. Sweep and Blend Features

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 Select the Shell tool from the Engineering group of the Model tab.  Enter 10 in the Thickness edit box of the Shell dashboard and select the top surface of the model.

 The preview of the model with shell feature get visible.  Click on the OK button from the Shell dashboard to view its final view.

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 Select the Front plane to draw sketch over it and click on the Sketch (S) button from the shortcut displayed, as shown.

 Select the Hidden Line option from the Display Style drop-down of the Graphics toolbar, to display the hidden lines of the model, as shown.  Draw the sketch, as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment.  Click on the Swept Blend tool from the Shapes group of the Model tab and select the sketch, if it is not selected by default, as shown.

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 Click on the Sections tab of the dashboard and click on the Sketch button to entering sketch environment, as shown.

 Draw the sketch, as shown.

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 Select OK button from the Close group of the Sketch tab to exit from the sketch environment.  Now click on the Insert button and then Sketch button of the dashboard to enter in the sketching environment, as shown.  Draw the sketch, as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. Also, the preview of model with swept blend feature get visible, as shown.  Click on the OK button from the Swept Blend dashboard to view its final view, as shown.

 Now, select the Shading option from the Display Style drop-down of the Graphics toolbar, to display the shaded view of the model.

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 Click on the Round tool (Model > Engineering > Round) and enter 20 in the Radius edit box of the Round dashboard.

 Select the edges of the swept blend feature to display preview of the round features, as shown.

 Click on the OK button from the Round dashboard to display its final view.

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 Save and close the file.

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Questions: 1. What is the use of Sweep tool? 2. Which tool is used to create a spring feature? 3. What is the procedure of removing material using the Sweep tool? 4. What is the use of trajectory while creating a helical sweep feature? 5. Which tool is used to create round blend features? 6. What is the procedure of creating a Rotational Blend feature? 7. What is the use of Swept Blend tool? 8. How can you edit a previously created Blend feature?

Exercises: Exercise 1

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Chapter 08: Creating Assemblies After creating individual components, you can bring them together into an assembly. By doing so, it is possible to identify incorrect design problems that may not have been noticeable at the part level. In this chapter, you will learn how to bring components into the Assembly environment and position them. The topics covered in this chapter are:  Starting an assembly  Inserting Components  Fixing the first component  Inserting the second component  Moving and rotating components  Applying constraints  Exploded view

Starting an Assembly To begin an assembly file, click on the New button from the Quick Access Toolbar to display New dialog box. From the dialog box, select the Assembly radio button and enter the name of the assembly file in the Name edit box. Next click on the OK button to entering in the assembly environment with Model tab, as shown. Now, add components to the assembly using the Assemble

tool.

Creo Parametric 7.0 - Step-By-Step Guide

Note: Initially, the assembly will open with the default template inlbs_asm_design with units inch, lb, and Fahrenheit. To work in any other template, deselect the Use default template and select the required template from the New File Options dialog box. To work in template with units Millimeter, Newton, and Second, you need to select mmns_asm_design radio button. While inserted the parts in any template, its unit system should be the same as of the template in which that part is created.

Inserting Components

There are two different methods to insert an existing part into an assembly. The first one is to insert using the Assemble button. The second way is to drag it directly from Windows Explorer. In the second method, there is no need to open the components in Creo Parametric. You can simply drag-anddrop them into the assembly.  Click on the Assemble button (Model > Component > Assemble) to display Open window.  Browse to the required file and click over it.  Next click on the Open button to display it in the assembly environment.

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 Select the button from the Component Placement dashboard to display the inserted component in the separate window, as shown.

You need to fix the first inserted component so that you can apply constraints to the further inserted components with respect to it. So that you can then move and rotate them with respect to the fix component.

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Fixing the First component

After placing the component in an assembly environment at the origin, it is free to move/rotate. You can move or rotate it with the help of 3D Dragger attached with it. To fix the first inserted component:  Click on the Assembly button to import first component and display Component Placement dashboard.  Click on the Fix option from the drop-down in the dashboard to display preview of the Fix component.

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 From the dashboard, click on the OK button to apply changes.  Now, you can analyse the degrees of freedom of the component. You will also notice that the component is fully fixed at the origin.

Note: After adding the Fix constraint to a component, the component gets fully defined

automatically. Thus, its degrees of freedom in the drawing area get removed. You can also use the Default Constraint to position the component at its default position and make inserted component fully defined automatically.

 Similarly, you can insert more components to assemble them. But there is no need to fix it. Instead of fixing it, you have to apply other constraints to them. These constraints are discussed further in this chapter.

Inserting Second Component

The procedure of inserting second component or another component is same as that of the first one. The only difference is instead of fixing it, you need to apply relations/constraints to it with the previously inserted components. You will learn to add constraints between components further in this chapter.

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Moving and Rotating Component

After inserting a component in the assembly environment, you can move and rotate it by using the 3D Dragger attached with it.  Click on the X-axis handle of the 3D Dragger and move the cursor along X-axis, as shown.

 Click on the Y-axis handle of the 3D Dragger and move the cursor along Y-axis, as shown.

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 Click on the Z-axis handle of the 3D Dragger and move the cursor along Z-axis.

Again, you can drag it in X-axis to bring both components close to each other.

To rotate the component To rotate the component:

 Press and hold the LMB (Left Mouse Button) over the torus attached with the 3D Dragger.  Rotate the in the clockwise or anticlockwise direction to rotate it, as shown.

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Similarly, you can rotate the component in three direction by rotating their respective torus.

Applying Constraints After inserting components into an assembly, you have to define constraints between them. By applying constraints, you can make components to flush with each other or two cylindrical faces concentric with each other, and so on. As you add constraints between components, the degrees of freedom will be removed from them. By default, there are six degrees of freedom for a part (three linear and three rotational). Eliminating degrees of freedom will make components attached and interact with each other as in real life. These constraints are available in the drop-down in the Component Placement dashboard. Now, you will learn to add constraints between components one by one.

Automatic Constraint

The Automatic constraint is used to apply Automatic constraint between selected surfaces after inserting any component according to the type of selected surface.  After inserting any component, select the Automatic option from the dashboard.  Next click on the two surface one-by-one, to applying Automatic constraint (Coincident) between them. Thus, makes two faces coincident to each other, as shown.

Similarly, after selecting circular surface of two components to apply Automatic Constrain between them, Concentric constrains will be applied automatically. Creating Assemblies

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Distance Constraint

The Distance constraint is selected to apply distance between two selected faces. In addition, the faces will be parallel to each other.  Click on the Distance option from the dashboard.  Click on two surfaces to apply Distance Constraint between them, as shown.

 To change the distance, drag the handle attached with it or edit the distance displayed, as shown.

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Angle Offset Constraint

The Angle Offset constraint is used to position the selected faces at a specified angle.  Select the Angle Offset option from the Component Placement dashboard  Select the two flat surfaces one by one to adjust them at an angle with each other, as shown.  To change the angle, drag the handle attached with it or edit the distance displayed, as shown.

Parallel Constraint

The Parallel constraint makes an axis, face or edge of one part parallel to that of another part.  Click on the Parallel option from the Component Placement dashboard  Click on the two flat surfaces one by one to apply Parallel Constraint between them.

Coincident Constraint

The use of Coincident constraint is same as shown earlier in the Automatic constraint.

Normal Constraint

The Normal constraint is used to make two selected surfaces or two axes perpendicular to each other.

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Coplanar Constraint

The Coplanar constraint is used to make two selected surfaces or axes coplanar.

Centered Constraint

The Centered constraint is used to make the axes of two cylindrical faces coincide/concentric with each other, as shown.

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Tangent Constraint The Tangent constraint is used to make the selected circular face tangent to the other selected face or plane.

Fix Constraint The Fix constraint is used to fix the component inserted in the assembly environment, as discussed earlier. After adding the Fix constraint to a component, its degrees of freedom in the drawing area get removed. Creating Assemblies

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Default Constraint The Default constraint is used to assemble the component in the assembly by aligning the default coordinate system of the component with the default coordinate system of the assembly. The datum planes of that part are also aligned with the assembly datum planes. After selecting this constraint, the default coordinate system of the component gets aligned with the default coordinate system of the assembly. Also, the component will be placed at the assembly origin by the system.  Select the Assemble button to place a component in the assembly environment.  Select the Default constraint from the Component Placement dashboard.

 From the dashboard click on the OK button to apply changes.  Select the Tree Filters option from the Settings drop-down to display Model Tree Items dialog box.  Select the Features check box and select the OK button from dialog box.

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 The assembled components can be viewed from the model tree.

Exploded View

After assembling different components in an assembly, you can explode them.  Select the Exploded View button (Model > Model Display > Exploded View) to explode the assembly automatically, as shown.

 To move/rotate the exploded components manually, select the (Model > Model Display > Edit Position) button.  Click on the required buttons from the Explode Tool dashboard to move/rotate the components.

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 Click on the component.  Next you can move the component by dragging the handles of 3D Dragger attached with it, as shown.

 To rotate the component, first click on the Rotate button from the dashboard.  Select the component and then rotate the torus handle attached with it, as shown.

 After clicking on the View Plane button from the dashboard, you can freely drag the components anywhere in the drawing area.

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 Click on the

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Exploded View button to reassemble the exploded components, as shown.

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Examples: Example 1 In this example, you will first create the parts and then create the assembly shown next.

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 Start Creo Parametric 6.0 by clicking the Creo Parametric 6.0 on your desktop.  On the Quick Access toolbar, click the New ( ) button to highlight the New dialog box. Alternatively press Ctrl + N key from the desktop to highlight the New dialog box.  Select the Assembly radio button in the Type area and enter Ch8_Example01 in the Name edit box of the dialog box, as shown.  Deselect the Use default template check box and click on the OK button to display New File Options dialog box, as shown.  Select the mmns_asm_design option from the New File Options dialog box, as shown.  Click on the OK button to enter in the Assembly Environment.

 Select the Assemble Open window. Creating Assemblies

button (Model > Component > Assemble) from the Ribbon to display the

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 Search the required file (Centre Disc) from the Open window and select it.  Click on the Open button from the window to import it. Alternatively, you can double-click on the file to import it.

For better visibility of the component/part, plane display is turned off by selecting the Plane Display ( ) check box from the Graphics toolbar.  Select the Fix option from the Component Placement dashboard to fix the recently inserted constrained (Center Disc), as shown. The component will also get fully constrained automatically. Now while inserting other components, you can arrange/assemble them with respect to the first/fixed component.

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 Next click on the OK button to exit the dashboard.

 Again, select the Assemble button and import another component (Flange).  Select the Coincident option from the Component Placement dashboard, as shown.  Select the two planar surfaces of both components to apply Coincident relation between them, as shown. Click on the

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button of the dashboard to change its orientation/direction, if required.

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 Again select another two flat surface and then select Coincident option from the Component Placement dashboard or vice versa.

 Now apply the Coincident between two round surfaces, as shown.

 Similarly import Flange component once again and assemble it on the other side of the Centre Disc (Fix component).

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 Select the Centre disc component from the Model Tree.  Now, select the ptc-std-brass option from the Appearance Gallery drop-down under Library area to change its appearance.

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 Now insert another component which is Shaft, as shown.  Select the round surfaces to apply Coincident (concentric) relation between them, as shown.

You can rotate the model using MMB (Middle Mouse Button) and component using the Rotate handle attached with the 3D dragger while inserting it, as shown.

 Select the flat surface of the Shaft and then select the Coincident option from the dashboard.  Now, select the flat surface of the Flange component to apply coincident relation, as shown.

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 Select another two flat surfaces to apply Coincident relations between them, as shown.

 Now insert another component (Key) and apply coincident relations, as shown.

Similarly, insert and assemble the Key and Shaft components on the other side, as shown.

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 Select the Save  Select the Close (

button from the Quick Access toolbar. ) button (View > Window > Close) from the Ribbon to close the file.

Example 2 In this example, you will first create the parts and then create the assembly shown next.

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 Start Creo Parametric 6.0 by clicking the Creo Parametric 6.0 on your desktop. Creating Assemblies

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 Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the desktop to highlight the New dialog box.  Select the Assembly radio button in the Type area and enter Ch8_Example02 in the Name edit box of the dialog box.  Deselect the Use default template check box and click on the OK button to display New File Options dialog box.  Select the mmns_asm_design option from the New File Options dialog box.  Click on the OK button to enter in the Assembly Environment

 Select the Assemble button (Model > Component > Assemble) from the Ribbon to display the Open window.  Search the required file from the Open window and select it.  Click on the Open button from the window to import it. Alternatively you can import the file by double-clicking on it.

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 Select the Fix option from the Component Placement dashboard to fix the recently inserted constrained (Base), as shown. The component will also get fully constrained automatically.

For better visibility of the component/part, plane display is turned off the Plane Display ( check box from the Graphics toolbar.

 Next click on the

)

button to exit the dashboard.

Now after inserting other components, you can arrange/assemble them with respect to the first/fixed component.

 Again, select the Assemble button and import another component (Bracket), as shown.  Apply the Coincident relation between selected surfaces one-by-one, as shown.

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 Next click on the

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button to apply changes or exit the dashboard.

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 Again, select the Assemble assembly it.

 Next click on the

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button and import same component (Bracket) once again and

button to apply changes or exit the dashboard.

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 Now import another component.  Select the round surfaces of both components one by one to apply Automatic (Coincident) relation between them. Use the

button to flip direction, if required.

 Select the Coincident option from the Component Placement dashboard and select the surfaces to apply Coincident relation between them.

 Import the same component once again and apply all possible relations and exit the dashboard.

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 Now import another component and select the two round surfaces to apply Coincident relation between them.  Again, select the two plane surfaces and select the Distance option from the dashboard.

 Double-click on the distance value in the drawing area and enter 3 in the edit box. Alternatively, you can directly enter 3 in the Distance edit box in the dashboard.

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 Insert another component (Roller) and apply the Coincident relation between Spindle and Roller.

 Select the plane surface of the Roller component and Bush component and apply Distance relation between them with distance 6.

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 Again, insert the Bolt component.  Select two round surfaces to apply Coincident relation between them and select the button to flip direction, if required.  Select the plane surface of the Bolt and Bracket component and apply Coincident relation between each other.

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 Select the Bolt component from the drawing and activate the Pattern tool (Model > Modifiers > Pattern) from the Ribbon.  Select the Direction option from the Pattern dashboard.  Select the vertical edge for Reference 1 and enter 50 in the Distance edit box.  Similarly select the vertical edge for Reference 2 and enter 134 in the Distance edit box and select the button to flip direction, if required.

 Select the button from the dashboard to apply changes and to display pattern features of the Bolt component.

 Click on the Exploded View ( ) button (Model > Model Display > Exploded View) from the Ribbon to display exploded view of the assembly. Creating Assemblies

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 To drag any component manually up to the required distance, select the Edit Position ( ) tool (Model > Model Display > Edit Position).  Select the component and drag it up to the required distance by dragging the handle attached with it. You can move/drag the component in three directions by dragging their corresponding handles in the particular direction.

 Similarly move the other components, as shown.

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 To remove the exploded view, press the Exploded View button once again.

 Select the Save button from the Quick Access Toolbar to save the file.  Next select the Close (

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) button (View > Window > Close) from the Ribbon to close the file.

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Questions: 1. Which tool is used to import a component in the assembly environment? 2. Which constraints makes inserted component fully constrained automatically? 3. What is the procedure of fixing a component in the assembly environment? 4. Which tool is used to apply concentric relation between two round surfaces? 5. What is the use of Default Constraint? 6. Which tool is used to explode the assembly components? 7. What is the procedure to move components manually after exploding them?

Exercises: Exercise 1

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Chapter 09: Drawings and Views Drawings are used to document your 3D models in the traditional 2D format including dimensions and other instructions useful for the manufacturing purpose. In Creo Parametric, you first create 3D models and assemblies, and then use them to generate the drawing. There is a direct association between the 3D model and the drawing. When changes are made to the model, every view in the drawing will be updated. This relationship between the 3D model and the drawing makes the drawing process fast and accurate. Because of the mainstream adoption of 2D drawings of the mechanical industry, drawings are one of the three main file types you can create in Creo Parametric. The topics covered in this chapter are:  Starting a Drawing  Generating the general view  Drawing models  Projection view  Detailed view  Auxiliary view  How to create new sheet in drawing  Sheet Setup  Lock View Movement

Starting a Drawing

To start a new sheet metal file, follow the steps given next.  In the New dialog box, select the Drawing radio button and enter the required name of the drawing file in the Name edit box.  Deselect the Use define template radio button and click on the OK button to display New Drawing dialog box.

Creo Parametric 7.0 - Step-By-Step Guide

Note: To insert any model for creating its drawing views, you can enter its name in the Default Model

edit box. Alternatively, you can click on the Browse button to browse it in the Open window. Unless you can then locate any required model by the General View button.  Select any template from the Specify Template area and also click on the required button from Orientation area.  Select the required sheet size from Standard Size drop-down.  Click on the OK button to enter in the Drawing environment/sheet.

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 Now you can generate the first drawing view over it using the General View button after entering the Drawing environment/sheet.

Generating the General View

To generate the first view using the General View tool.  Click on the General View button (Layout > Model View > General View) to display the Open window.  Click on the required model from the Open window.  Click on the OK button to display the Select Combined State dialog box.



Click on the OK button from the Select Combined State dialog box to continue.

Note: If you select No Combined State option from the Select Combined State dialog box then while clicking in the drawing sheet to place the drawing view, the preview of the drawing with unexploded view (of an assembly file) in the default orientation will be displayed along with the Drawing View dialog box.

Whereas if you select Default All then while clicking in the drawing sheet to place the drawing view, the preview of the drawing with exploded view (of an assembly file) in the default orientation will be displayed along with the Drawing View dialog box.  Click on the drawing sheet to place the first drawing view over it and display the Drawing View dialog box, as shown.  From the dialog box, you can change the View Type, Visible Area, Scale, Sections, View States, View Display, Origin, and Alignment of the drawing view. Some of them are discussed next.

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Creo Parametric 7.0 - Step-By-Step Guide

To change Orientation of Drawing View (View Type) To change the view type (orientation) of the drawing view:

 Click on the View Type option under the Categories area of Drawing View dialog box. It it is not selected by default  Select the required option/view under the Model view names area.  Click on the Apply button to apply change. Alternatively double-click on the required view to apply. You can click on the OK button to apply changes and close the dialog box.

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To change Visible Area

To change the view type of the drawing view:  Click on the Visible Area option under the Categories area of Drawing View dialog box.  Select the required option from the View Visibility drop-down.  Click on the Apply button to apply change.

To display half view of the drawing view.  Select the Half View option from the View visibility drop down.  Select the Plane with respect to which you can display the half view.  Click on the Side to keep button from the Drawing View dialog box to flip between the side of drawing view to keep.  Click on the Apply button to apply change.

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To change Scale value

To change the scale value (size) of the drawing view:  Click on the Scale option under the Categories area of Drawing View dialog box.  Select the Custom scale radio button.  Enter the required scale value in the edit box.  Click on the Apply button to apply change.

To change View Display

To change the display style of the drawing view:  Click on the View Display option under the Categories area of Drawing View dialog box.  Click on the Display Style drop-down and select the required option from it, as shown  Click on the Apply button to apply changes.

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To change Location of the Drawing View

To change the location of drawing view in the drawing environment:  Click on the Origin option under the Categories area of Drawing View dialog box.  Next enter the required coordinates in the X and Y edit box.  Click on the Apply button to apply changes.

To change Alignment of Drawing View

The Alignment option in the Drawing View dialog box is used to align the drawing view with another one available in the drawing sheet.

To Place an Exploded View in the Drawing Sheet To place a drawing with exploded vied in the drawing sheet.

 Select the Default All option from the Select Combined State dialog box.  Click in the drawing sheet to display the exploded view of the drawing in the default orientation along with the Drawing View dialog box.

Now you can use the option in the dialog box same as discussed earlier. Creating Assemblies

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Drawing Models

After entering in the drawing environment, to add the required model any time for generating its drawing views.  Click on the Drawing Models button (Layout > Model Views > Drawing Models) to display Menu Manager.  Click on the Add Model option to display the Open window.

 Next browse to the required file and click on the Open button.  Click on the Done/Return option. Creating Assemblies

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 Now click on the General View button to place the drawing view of the selected model, as discussed earlier.

Projection view

After creating the first view in the drawing environment, you can generate different Orthographic/projection views from it. To generate the projection views of the first drawing view in the drawing sheet.  Click on the Projection Views button (Layout > Model Views > Projection Views) from the Ribbon.  Move the cursor towards upto some distance in the direction of the model to generate corresponding projectedview.  Click in the drawing sheet to place the projected view generated.

Similarly you can generate other projected views (top view,bottom view & side view) in the drawing sheet by clicking over the drawing view first.

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To change display style of any of the projected view.  Double click over the required projected view to display Drawing View dialog box, as shown.  Click on the Display Style drop-down and select the required option from it.  Click on the Apply button to apply changes and display the drawing view with Wireframe display style.

Detailed view

To enlarge a portion of a drawing view or entire drawing view contaning features which are difficult to see, you can use detailed view to zoom it. To generate the detailed view of any existing drawing view.    

Click on the Detailed View button (Layout > Model Views > Detailed View) from the Ribbon. Click on the drawing view to define center point. Draw a spline over it, as shown. Press the MMB to exit from the active tool.

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 Move the cursor up to some distance and place the generated detailed view,

To move the detailed view, click over it and drag it to the required location. Similar you can create the detailed view of 3D drawing view.

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Auxiliary view

To display the Auxiliary view of the drawing view.  Click on the Auxiliary View button (Layout > Model Views > Detailed View) from the Ribbon.  Click on the inclined line (angled edge) from the drawing view.  Move the cursor up to some distance in inclined direction to place the Auxiliary view generated.

 Click to place the auxiliary view generated, as shown.

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Creating New Sheet in drawing To create a new drawing sheet in drawing environment. Click on the New Sheet (Layout > Document > New Sheet) to add a new sheet, as shown.

button

Note: When you click on the New Sheet button then a new sheet gets added at the bottom of the drawing area automatically, as shown.

Sheet Setup

To change size of the sheet in the drawing environment.  Click on the Sheet Setup button (Layout > Document > Sheet Setup) to display Sheet Setup dialog box.  Select the required option from the dialog box, as shown. Creating Assemblies

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 Click on the Preview button to display preview of the sheet with the current settings in the dialog box.  Next click on the OK button to apply changes and display sheet with applied settings.

Note: The Width and Height edit boxes in Size area will be active only if you select Custom Size option from the Sheet Format drop-down.

Applying Dimensions to the Drawing View To apply dimensions to the drawing view.  Click on the Show Model Annotations (Annotate > Annotations > Show Model Annotations) button from the Ribbon.  Click on the drawing view to generate dimensions.

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 Click on the

button from the Show Model Annotations dialog box to make all dimensions visible.

To hide any dimension, deselect the checkbox of the required dimension in the Show column of the dialog box. Alternatively, click on the dimension that you want to make visible, from the drawing area.  Click on the Apply button from the dialog box to apply changes and exit the dialog box.

Note: To generate dimensions of a drawing view, right-click over the new_view_ from the Drawing Tree and click on the Show Model Annotations option from the shortcut menu, as shown.

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Lock View Movement

The Lock View Movement button is used to toggle in the movement of the drawing view. i.e. this tool is used to move and fix your drawing view in the drawing area. If you want to move any view in the drawing area, you can select it and if you want to fix it, again you want to select it. This tool can be also selected from by Drawing Tree area, as shown..

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Examples: Example 1 In this example, you will create 2D drawing of the parts shown below.

 Start Creo Parametric 6.0 by clicking the Creo Parametric 6.0 on your desktop.  Click on the New ( ) button from the Quick Access toolbar to display the New dialog box.  Select the Drawing radio button in the Type area and enter name of the file Ch9_Example1 in the Name edit box of the dialog box.  Click on the OK button to display the New Drawing dialog box.  Enter the name of any particular file (part created in chapter 8) or click on the Browse button to browse to the required file and select it. Creating Assemblies

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 Select the other options from the New Drawing dialog box, as shown.  Click on the OK button to enter in the Drawing environment.

 Click on the button (Layout > Model View > General View) from the Ribbon to display the Open window.  Click on the OK button from the Select Combined State dialog box.  Click in the drawing area, inside the page layout to place the drawing of part. Creating Assemblies

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 Click on the View Type option under Categories area of the Drawing View dialog box, if not selected.  Click on the Left option under the View orientation area to display Left side view of the model.  Click on the Apply button to apply changes. To exit the dialog box, you can click on the OK button.

 Now click on the Scale option under Categories area of the Drawing View dialog box.  Select the Custom scale radio button under the Scale and perspective options area.  Enter the required scale valve in the edit box corresponding to it, to increase/reduce the size of the drawing.  Again, click on the Apply button to apply changes and OK button to exit Drawing View dialog box.

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 Now, click on the button (Layout > Model View > Projection View) from the Ribbon to generate projection view of a component automatically.  Move the cursor up to some distance towards right and click to place the view generated.  Similarly generate another projection view from it, as shown.

Note: The system automatically generates the projection view of the first inserted component

without selecting it. You have to only place it. But for generating another projection view second time you need to click on the component to select it and then place it.

 To move any drawing view, deactivate the Lock View Movement button (Layout > Document > Lock View Movement) if it is selected.  Click on the required view to display Move cursor over it, as shown  Drag it to required location in the drawing sheet/drawing environment. Creating Assemblies

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 Select the button (Annotate > Annotations > Show Model Annotations) from the Ribbon to display Show Model Annotations dialog box.  Click on the component to display preview of its dimensions automatically.

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 Click on the button from the dialog box to make all dimensions strong/visible.  Click on the OK button to apply changes and exit dialog box.  To remove any strong dimension, click over it and press Delete key from keyboard to remove it.

 To relocate any required dimensions, select it are move it to the location.

Similarly, relocate and remove the required dimensions, as shown.

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 Similarly generate dimensions of other projection view.

Note: You can drag a window over all components to select them and then select the Show Model Annotations button to generate dimensions of all components automatically.

 Click on the Drawing View

button and click on any drawing view to generate its

information/details, as shown.

 Select the Save (

) button from the Quick Access toolbar.

 Select the Close (

) button (View > Window > Close) from the Ribbon to close the file.

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Creo Parametric 7.0 - Step-By-Step Guide

Example 02 In this example, you will create the Drawing of model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access toolbar to display the New dialog box. 3. Select the Drawing radio button from the dialog box and enter Ch9_example02 in the Name edit box. 4. Deselect the Use default template check box. 5. Click on the OK button to display New Drawing dialog box.

6. Enter the name of the required file (part created in chapter 8) in the New Drawing dialog box or browse to it, as shown. Creating Assemblies

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7. Select Landscape (as the sheet orientation) and “A4” (as the sheet size), depends upon your requirements. 8. Click on the OK button to enter in the drawing environment with drawing sheet (with applied settings).

9. Now click on the General View button (Layout > Model Views > General View) from the Ribbon to display the Select Combined State dialog box. 10. Click on the OK button to continue.

11. Click in drawing area to define the centre point of drawing view, as shown.

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12. Select the required drawing view, as shown.

13. Click on the Scale option and enter the required scale value in the Custom scale edit box, as shown. 14. Click on the Apply button to apply changes or enlarge its size.

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15. Click on the View Display option and enter the select the required option from the Display style drop-down. 16. Click on the Apply button to apply changes and display drawing view in new style.

17. Click on the Origin option and enter the required coordinates in the X and Y edit box. 18. Click on the Apply button to apply changes and relocate the drawing view in the drawing sheet or drawing area.

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19. Click on the Show Model Annotations button (Annotate > Annotations > Show Model Annotations) from the Ribbon. 20. Click on the drawing view to generate its dimensions and display Show Model Annotations, as shown.

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21. Click on the button make all dimension visible. 22. Click on the OK button to apply changes and exit dialog box

23. Remove the unwanted dimensions and relocate the dimensions properly.

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24. Click on the Projection view button (Layout > Model Views > Projection View) from the Ribbon. 25. Click on the drawing view to generate another drawing view.

26. Click on the Detailed View button (Layout > Model Views > Detailed View) from the Ribbon. 27. Click on the view and draw a close spline over it and press the MMB to exit it 28. Next move up to some distance and click to place the detailed view, as shown.

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29. Select the Save

button from the Quick Access Toolbar.

30. Select the Close (

) button (View > Window > Close) from the Ribbon to close the file.

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Questions: 1. Which tool is used to insert a model to generate its drawing views and how? 2. Which tool is used to generate a first view in the drawing environment? 3. How can we generate auxiliary view of a model? 4. Which tool is used to change the sheet size? 5. What is the use of Lock View Movement tool? 6. How can we generate exploded view in drawing environment?

Exercises: Exercise 1 1 Create this part and then create its orthographic views. Add dimensions and annotations to the drawing.

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Exercise 2 Create this part and then create its orthographic views and an auxiliary view. Add dimensions and annotations to the drawing.

s

Exercise 3 Create this part and then create its orthographic views and an auxiliary view. Add dimensions and annotations to the drawing.

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Chapter No: 10 Sheet Metal Design Sheet metal is a component having uniform thickness. When we bend or unbend then length of thickness will change. You can make sheet metal parts by bending and forming flat sheets of metal. In Creo Parametric, Sheetmetal parts can be folded and unfolded enabling you to show them in the flat pattern as well as their bent-up state. There are two ways to design Sheetmetal parts in Creo Parametric. Either you can start the Sheetmetal part from scratch using Sheetmetal tools throughout the design process or you can design it as a regular solid part and later convert it to a Sheetmetal part. Most commonly, you design sheet-metal parts in Sheetmetal environment from the beginning. In this chapter, you will learn some of the mostly used tools. The topics covered in this chapter are:  Starting a Sheetmetal Part  Planar  Flat  Flange  Boundary Blend

Starting a Sheetmetal Part File

To start a new sheet metal file, follow the steps given next.  Click on the New button from the Quick Access toolbar to display the New dialog box.  In the New dialog box, select the Part radio button in the Type area and Sheetmetal radio button in the Sub-type area.  From the New dialog box click on the OK button to enter in the Sheetmetal environment.

Creo Parametric 7.0 - Step-By-Step Guide

 Click on the Top plane and then click on the Sketch (S) button from the shortcut displayed to enter in the sketching environment, as shown.  Click on the Sketch View button from the Graphics toolbar to make sketching plane parallel to screen.  Draw the sketch for the base feature, as shown.

 Click on the OK button from the Close group of the Sketch tab to exit from the sketch environment.  You can now use this sketch to create sheetmetal base feature, discussed further in this chapter. Sheet Metal Design

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Note: When you start a new sheetmetal file, if you directly choose the OK button from the New dialog box displayed then the new sketching environment get displayed with the default template/units as inlbs_part_sheetmetal. So, the units for length will be in inch, mass in lb, time in seconds and temperature in Fahrenheit.

To start a Sheetmetal Part file with another template To start a new file with any other template.

 Click on the New button from the Quick Access toolbar to display the New dialog box.  In the New dialog box, select the Part radio button in the Type area and Sheetmetal radio button in the Sub-type area.  Deselect the Use default template check box, as shown.  Select the OK button from the dialog box, the New File Options dialog box get visible.  By default, the inlbs_part_sheetmetal template is selected in it, select other template mmns_part_sheetmetal, as shown.  Now select the OK button from the New File Options dialog box to start a new file with the selected template.

 You can now work in the new Sheetmetal Part file template with units millimeter, Newton, and Second.

Planar Wall The Planar tool is used to create a planar wall while creating a base feature in sheet metal design.  In the New dialog box, select the Part radio button in the Type area and Sheetmetal radio button in the Sub-type area. Sheet Metal Design

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 Click on the Top plane and then click on the Sketch (S) button from the shortcut displayed to enter in the Sketching Environment, as shown.  Click on the Sketch View button from the Graphics toolbar to make sketching plane parallel to screen.  Next, draw the sketch for the base feature, as shown.

 Exit from the sketch.  Select the Planar tool (Model > Shapes > Planar) to display the Planar dashboard, as shown.  Enter the required thickness of the sheet in the dashboard, as shown.

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 Click on the sketch of the base, to display preview of the Planar wall, as shown.  From the dashboard, click on the OK button to apply changes and display the Planar wall feature.

Extrude Tool

The Extrude is the process of creating a two-dimensional profile and converting it into threedimensional, perpendicular to the sketching plane and by giving it the required thickness. In sheet metal enter the required thickness for the sheet wall.  Draw the same sketch again as you have created previously.  Click on the Extrude button (Model > Shapes > Extrude) to display the Extrude dashboard, as shown.  Click on the sketch to display preview of extruded feature, as shown.

 Next enter the required depth value in Depth value edit box and the thickness of the sheet in the Thickness Value edit box. Sheet Metal Design

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The use of options in this dashboard is same, as discussed in earlier chapters.  From the dashboard, click on the OK button to display the extruded Sheet metal feature.

Flat Wall

The Flat tool is used to create a flat wall. To create a flat wall.  First create a base feature or primary wall of sheetmetal as created earlier, as shown.

 Select the Flat tool (Model > Shapes > Flat) to display the Flat dashboard, as shown.

 Select the edge of the model base model to display preview of the Flat wall feature, as shown.

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 Click on the Shape tab of the dashboard, you can change the direction of the Flat wall by selecting the required radio buttons under the Shape attachment area, as shown.  To change the distance of the Flat wall, double-click over the distance displayed and enter the required, as shown.  To change the angle of the flat wall feature, you can enter the required angle value in the dashboard. Note that you can also change the distance and angle values from the drawing area, by clicking over it and enter required values, as shown. Also, for angle values you can change it by dragging the handle attached with it, as shown.  From the dashboard, click on the OK button to apply changes and display the Flat wall feature.

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Sheet Metal Properties

The Sheet Metal properties is used to define the bend size, bend allowance, relief, and bend orders and other design rules. These properties can be defined from the Model Properties dialog box.  Click on the File > Prepare > Model Properties from the File menu to display Model Properties dialog box.  To change sheet thickness, click on the change under the Material area of Model Properties dialog box to display Material Thickness dialog box.  Enter the required thickness and click on the Regenerate button to apply changes.

 To change Bend Allowance, click on the change option on the right of the Bend Allowance under Sheetmetal area to display Sheetmetal Preferences dialog box.  Select the required radio button K factor/ Y factor and enter the required value in the Factor value edit box.  Click on the OK button Sheetmetal Preferences dialog box to apply changes, as shown.  Click on the Close

Sheet Metal Design

button of the Model Properties dialog box to exit it.

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The K Factor is the ratio of distance between the neutral bend line and the inside bend radius with respect to the thickness of the sheetmetal part. The standard formula that is used to calculate the bend allowance is.

Sheet Metal Design

𝑩𝑩𝑩𝑩 =

𝝅𝝅(𝑹𝑹 + 𝑲𝑲𝑲𝑲)𝑨𝑨 𝟏𝟏𝟏𝟏𝟏𝟏

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A= Bend Allowance. R=Bend Radius. K= Neutral Factor=t/T. T= Material Thickness. A=Bend Angle. t= Distance from inside face to the neutral sheet.

Flange Wall

The Flange tool is used to create a flange wall which is the bend section of the sheetmetal.  First create a base feature or primary wall of sheetmetal, as created earlier.

 Select the Flange

tool (Model > Shapes > Flange) to display the Flange dashboard.

 Select the edge of the sheetmetal model to display preview of the Flange wall, as shown.

 Press and hold the Shift key and click on the flat surface to apply Flange wall feature to all edges, as shown. Sheet Metal Design

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 Click on the Shape tab of the dashboard, you can change the direction of the Flange wall by selecting the required radio buttons under the Shape attachment area, as shown.  To change the distance and angle values of the Flange wall, double-click over the distance and angle values displayed and enter the required, as shown. Note that you can also change the distance and angle values from the drawing area, by clicking over it and enter required values, as shown. Also, for angle values you can change it by dragging the handle attached with it, as shown.

 Now click on the Sketch button under the Shapes tab to display Sketch dialog box, as shown.  Click on the Sketch button in the Sketch dialog box to enter in the Sketching environment, as shown.

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 Click on the Sketch View to the screen.  Draw the sketch, as shown.

button from the Graphics toolbar to make sketching plane parallel

 Clink on the OK button from the Close group of the Sketch tab to exit from the sketch environment. The preview of the model with Flange feature get visible, as shown.

 To remove/reduce gap between the edges, as highlighted in the above figure.  Click on the Corner Treatment tab and select all the edge entries, as shown.  From the Type drop-down select the Overlap option to display preview of the overlapped edges.

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 From the dashboard, click on the OK button to apply changes and display 3D Sheetmetal Part model with Flange wall features.

Boundary Blend

The Boundary Blend tool is used to define boundary blend between two or more profiles on different planes by selected entities or edges of Planar walls.  Create two planar walls on two Parallel planes at the required distance from each other, as shown. Sheet Metal Design

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 Select the Boundary Blend Boundary Blend dashboard.

tool (Model > Shapes > Boundary Blend) to display

 Select the two edges of the Planar walls to display Boundary blend between them.

 From the dashboard, click on the OK button to apply changes. The 3D Sheetmetal Part model with Boundary Blend feature get visible.

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Similarly, you can create Boundary Blend by selecting two open sketch entities created on two different planes, as shown.

Offset Wall The Offset tool is used to create an offset wall from the selected wall surface.  Click on the Offset button (Model > Editing > Offset) to display Offset dashboard.  Click on the flat surface of the sheetmetal, to display offset feature.

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 Drag the plane upto the required distance or enter the required distance value in the Offset dashboard.  Click on the button to display the 3D sheetmetal part with offset wall surface.

Flat Pattern The Flat Pattern tool is used to flatten the Sheetmetal part model so that you can easily display the manufacturing information.  Create the Sheetmetal Part model, as shown.

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 Select the Flat Pattern tool (Model > Bends > Flat Pattern) to display Flat Pattern dashboard along with preview of the Flat Pattern.

 From the dashboard, click on the OK button to apply changes. The flat pattern of the Sheetmetal part model get visible.

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Examples: Example 1 In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. 3. In the New dialog box, select the Part radio button in the Type area and Sheetmetal in the Sub-type if not selected. 4. Enter Ch10_Example01 in the Name edit box and deselect the Use default template checkbox. 5. Click on the OK button to display the New File Options dialog box. 6. Select the mmns_part_solid option from the New File Options dialog box and click on the OK button from it.

7. Click on the Top plane and then click on the in the Sketching Environment. Sheet Metal Design

Sketch (S) button of the shortcut displayed to enter

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8. Click on the Sketch View button from the Graphics toolbar to make sketching plane parallel to the screen. 9. Next, draw the sketch along with centerlines, as shown.

10. Select the Line entity and then select the Mirror tool (Sketch > Editing > Mirror) from Ribbon. 11. Next select the centerline to display preview of the mirror feature, if required.

12. Draw a centerline at an angle of 45 degree, as shown. 13. Select the two line entities and select the Mirror tool again. 14. Select the Centerline to display preview of mirror features, as shown.

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15. Select the Delete Segment tool and move the cursor over the unwanted entities to remove, as shown. Also remove the inclined centerline.

16. Select OK button from the Close group of the Sketch tab to exit from the sketch environment. 17. Now activate the Planar tool (Model > Shapes > Planar) to display the Planar dashboard. 18. Enter 12 in the Depth edit box of the Planar dashboard, as shown.

19. Select the sketch to display the preview of the planar feature.

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20. From the dashboard, click on the OK button to apply changes and display the 3D model.

21. Again, select the Sketch button from the Datum group of the Model tab. 22. Select the Front plane and press MMB. Also, adjust the sketching plane parallel to screen. 23. Activate the Reference tool reference, as shown.

(Sketch > Setup > Reference) and select the edge of the model for

24. Draw the sketch and apply dimensions to it, as shown.

25. Select OK button from the Close group of the Sketch tab to exit from the sketch environment. Sheet Metal Design

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26. Activate the Extrude tool from the Shapes group to display the Extrude dashboard, as shown. 27. Click on the Extrude as wall button and select the button from the Depth drop-down. 28. Enter 80 in the Depth edit box. 29. From the Options tab select the Add bends on sharp edges checkbox to replace sharp edges with bend edges, if it is not selected.

30. From the dashboard, click on the OK button to apply changes. The 3D models with Extrude feature get visible.

31. Now activate the Flange tool

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from shapes group to display Flange dashboard, as shown.

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32. Select an edge to display Flange feature along with it. 33. Double-click on the Length and Angle values displayed in the drawing area and enter 44 and 0 in it.

34. From the dashboard, click on the OK button to apply changes and display 3D model with Flange feature.

35. Similarly add two more flanges with Length and Angle –

-

104.65 and 45 for the first Flange feature 38 and 45 for the second Flange feature.

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36. Select the Extrude 1 from the Model Tree.

37. Click on the Editing > Pattern > Pattern option from the Editing group, as shown.

38. In the dashboard, enter the required value as shown. (Click on Sheet Metal Design

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39. From the dashboard, select OK to apply changes and display 3D model with Flange feature.

40. Click on the Engineering > Round option from the Engineering group to display Round dashboard. 41. Enter 20 in the Radius edit box of the Round dashboard, as shown.

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42. Select the edges for applying Round features to them, as shown. 43. From the dashboard, click on the OK button to apply changes and display 3D model with Round edges.

44. Activate the Sketch tool and click on the flat surface. 45. Draw the sketch, as shown in its partial view.

46. Exit the sketch and using the Extrude tool, remove the material, as shown

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47. Select the Extrude cut feature and activate the Pattern tool. 48. Create the Pattern feature as shown below and as discussed earlier.

49. Create a sketch on the top face of the model with the defined dimensions. As show bellow. Sheet Metal Design

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50. Apply the Extrude feature and remove material.

51. Apply the Pattern of the Extrude cut feature.

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52. Save and close the file.

Example 2 In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New button from the Quick Access toolbar to display the New dialog box. 3. Select the Part radio button from the Type area and Sheetmetal radio button from the Sub-type area of the New dialog box and deselect the Use default template check box, as shown. 4. Also enter Ch10_example02 in the Name edit box. 5. Select the OK button from the dialog box, the New File Options dialog box get visible. 6. Select other template mmns_part_sheetmetal, as shown. 7. Now select the OK button from the New File Options dialog box to start a new Sheetmetal Part file with the selected template. Sheet Metal Design

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8. Select the button from the Datum group of the Model tab. 9. Select the Top Plane and using the Line tool from the Sketching group, draw the sketch, as shown.

10. Select the Extrude tool from the Shapes group to display Extrude dashboard. 11. Enter 150 in the Depth Value edit box and 3 in the Thickness Value edit box to display preview of the Extruded feature, as shown.

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12. From the dashboard, click on the OK button to apply changes. The 3D Extruded Sheetmetal Part model get visible.

 Click on the flat surface and click on the Sketch (S) button of the shortcut displayed to enter in the Sketching Environment.  Draw the sketch, as shown.

 Activate the Extrude tool to display Extrude dashboard.  Click on the Remove Material

button to display preview of the Extrude Cut feature.

 Click on the buttons, if required.  From the dashboard, click on the OK button to apply changes and display 3D Sheetmetal Part model.

 Now activate the Flange tool from the shapes group to display Flange dashboard.  Select the User Define option in the Profile drop-down, as shown. Sheet Metal Design

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 Now click on Placement tab and click on the box adjacent to the Details button (if required), as shown.  Select the first edge, as shown.  Press and hold the Shift key and select the second edge for applying Flange to them, as shown.

 Click on Shape tab and then click on the Sketch button to display Sketch dialog box, as shown.  Click on the Sketch button of the Sketch dialog box to enter in the Sketching environment, as shown.

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 Draw the sketch, as shown (partial view of the model).

 Exit from the sketch environment to display preview of the Flange feature.  From the dashboard, click on the OK button to apply changes and display 3D Sheetmetal Part model with Flange feature.

 To edit the Flange feature of the Sheetmetal Part model, click on the Flange 1 in the Model Tree on the left side of the drawing area, as shown.  Right-click over it to display the shortcut menu and click on the of the model once again, as shown.

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button to display the partial view

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 Now you can make changes to the Flange feature, as per your requirements.  To fill gaps between the flanges, click on Relief tab and then Bend Relief from the Relief Category area, as shown.  Next, select the Rectangular option from the Type drop-down.

 Now click on the Miter Cuts tab and enter .35 in the Width Value edit box and .25 in the Offset Value edit box, as shown.  From the dashboard, click on the OK button to apply changes and display 3D Sheetmetal Part model with Flange feature.

 Select the Flat Pattern tool (Model > Bends > Flat Pattern) to display Flat Pattern dashboard along with preview of the Flat Pattern.

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 From the dashboard, select OK to apply changes. The flat pattern of the Sheetmetal part model get visible.

 Save and close the file.

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Questions: 1. What is the use of Planar tool? 2. How can we use Flat and the Flange tools? 3. Which tool is use to flatten the Sheetmetal part model? 4. How can we use Boundary Blend tool? 5. Which tool is use to remove material from the Sheetmetal part model? 6. What is the use of edit boxes available in the Relief tab of the Flange dashboard?

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Chapter 11: Surface Design Creo Parametric surface tools can be used to create complex models/geometries using various standard tools like Extrude, Revolve and so on. Surface models are used in automobile, aerospace, and plastic industries. The use of these tools is same as discussed earlier, the only difference is for creating a surface model, you need to select Surface button from their respective dashboards. Some of the advanced surfacing tools are available in the Surface tab. In this chapter, you learn the basics of surfacing tools that are commonly used. The topics covered in this chapter are:  Use of some standard tools for creating surface model  Rotating surface  Boundary Blend  Fill  Offset  Trim  Merge  Thicken  Intersect  Mirror  Project  Extend  Freestyle

Extrude

To use the Extrude tool for creating a surface model.  Draw the open or close sketch first.

 Select the Extrude tool (Model > Shapes > Extrude) to display Extrude dashboard.

Creo Parametric 7.0 - Step-By-Step Guide

 Select the Extrude as surface button from the dashboard to display preview of surface model. Use of other options available in Extrude dashboard is same as that of the options used for creating a 3D Part model (discussed in chapter 4).



Click on the OK button to apply changes and display the surface model.

Note: Sketch can be toggled between a solid model and a surface model. The two buttons that are used to toggle between the solid feature and a surface feature are available on every dashboards of the standard tools.

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Revolve

To use the Revolve tool for creating a surface model.  Draw the sketch with a centerline.

 Select the Revolve (Model > Shapes > Revolve) tool from the Ribbon to display Revolve dashboard  Select the Surface button from the dashboard to display preview of the Revolve model, as shown.

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

Click on the OK button to apply changes and display the surface model, as shown.

Similarly, you can use other standard tools for creating various surface models.

Boundary Blend

To use the Boundary Blend tool,  Create two curves on the same plane, as shown.

 Select the Boundary Blend tool (Model > Surfaces > Boundary Blend) to display Boundary Blend dashboard.

 Press and hold the Ctrl key and elect the two edges of surfaces to display preview of the Boundary Blend feature. Surface Design

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 Click on the OK button to apply changes and display the surface model with Boundary Blend feature.

You can also create a Boundary Blend by creating surface features on different planes, as shown.

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Fill

The Fill tool is used to create a planar surface by sketching its boundaries. To use the Fill tool.  Create a round surface, as shown.

 Activate the Plane tool (Model > Datum > Plane) from the Ribbon.  Select the outer edge of the surface to display preview of the Datum Plane along it.

 Click on the OK button from the Datum Plane dialog box to display Datum Plane, as shown.

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 Select the

Fill tool (Model > Surfaces > Fill) to display Fill dashboard, as shown.

 Click on the Datum Plane and draw the sketch for the Fill feature along its boundaries.

 From the dashboard, click on the OK button to apply changes and display the surface model with Fill feature, as shown.

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Offset

The Offset tool is used to create an offset surface after selecting a surface at an specified offset distance.  Click on the Surface feature.

 Select the Offset tool (Model > Editing > Offset) to display Offset dashboard along with preview of the Offset feature.

 Enter the required value in the Offset Distance edit box in the dashboard.  From the dashboard, click on the OK button to apply changes and display the surface model with Fill feature.

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Trim

The Trim tool is used to remove the unwanted area of the surface model.  Select on the surface to trim.

 Select the Trim tool (Model > Editing > Trim) to display Surface Trim dashboard.  Click on another surface feature which will trim another surface.

 The untrimmed area gets highlighted, as shown. You can use the

button of the dashboard to flip the direction of selected area.

 From the dashboard, click on the OK button to apply changes and display the surface model with the trimmed surface.

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Similarly, you can trim the opposite portion of the surface model.

You can also trim the surface model by creating a sketch over it.

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Merge The Merge tool is used to merge two surfaces and make them a single surface by removing the unwanted part from it.  Select the two surfaces.

 Select the Merge tool (Model > Editing > Merge) to display Merge dashboard along with the preview of merged surfaces.

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 Click on the

buttons from the dashboard to flip or highlight another portion, as shown.

The highlighted portion will remain stable while as the other portion get removed.

 From the dashboard, click on the OK button to apply changes and display the merged surfaces.

Thicken

The Thicken tool is used to increase the thickness of the surface model.  Click on the surface model to select it.

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 Select the Thicken tool (Model > Editing > Thicken) to display Thicken dashboard along with the preview of surfaces with increased thickness.

 Enter the required thickness value in the edit box in the dashboard.  From the dashboard, click on the OK button to apply changes and display the surface model with thicken feature.

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Intersect

The Intersect tool is used to display an intersection curve along the intersection of two surfaces.  Select both the surfaces.

 Select the Intersect tool (Model > Editing > Intersect) to display curve along intersection of both surfaces.

Mirror

The Mirror tool is used to mirror a surface about a selected plane.  Click on the surface to mirror.

 Select the Mirror tool (Model > Editing > Mirror) to display Mirror dashboard.  Select the Plane along which you want to mirror it. Surface Design

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 From the dashboard, click on the OK button to display the mirror surface.

Project

The Project tool is used to project a curve on the selected surface.  Select the Project tool (Model > Editing > Project) to display the Projected Curve dashboard.

 Click on the Reference tab and click under the Chains area.  Select the edges/curves to project, as shown. Surface Design

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 Click under the Surfaces area and click on the surface.

 Now click under the Direction Reference area and select the vertical edge for direction to display preview of projected curves.

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 From the dashboard, click on the OK button to display the projected curves.

Extend

The Extend tool is used to extend a curve up to the specified distance.  Click on the surface and then select the edge to extend.

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 Select the Extend tool (Model > Editing > Extend) to display the Extend dashboard along with the preview of the extended curve.

 Enter the required distance value for extend in the edit box in the dashboard.  From the dashboard, click on the OK button to display the extended curve.

Freestyle The Freestyle tool is used to create surfaces by subdivision modelling.  Select the Freestyle tool (Model > Surfaces > Freestyle) to display Freestyle dashboard.

 Click on the Sphere Primitive in the dashboard to display round surface, as shown.

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 Now click on the Extrude button

in the dashboard to extrude selected edge.

You can use the handle attached with the extruded surface to change the shape and size of the extruded surface manually.  Similarly do the same on the other side.

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Examples: Example 1 In this example, you will create the model shown below.

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click the New ( ) button from the Quick Access Toolbar to display the New dialog box. 3. On the New dialog box, enter Ch11_Example01 in the Name edit box and select the Part radio button in the Type area. Click OK from the dialog box. 4. Select the Sketch button from the Datum group of the Model tab and select the Front plane. 5. Select the Spline tool from the Sketching group and draw the sketch, as shown. 6. Draw a centerline by selecting the Centerline tool, as shown. 7. Using Normal tool, apply dimensions to the sketch, as shown.

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8. Now click on the OK button from the Close group of the Sketch tab to exit from the sketch environment. 9. Select the Revolve tool (Model > Shapes > Revolve) from the Ribbon. 10. Create the revolve feature at 360 degrees angle, as shown.

11. Create a plane at top of the model and draw the sketch over it, as shown. 12. Remove the unwanted entities, as shown.

13. Now activate the Extrude tool to activate the Extrude dashboard. 14. Click on the Extrude as surface from the dashboard to extrude sketch as surface.

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15. Click on the round surface and select the Trim tool (Model > Editing > Trim) from the Ribbon to display Surface Trim dashboard.

16. Next click on the extruded surface to highlight the untrimmed surface.

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17. Click on the button from the dashboard to highlight the inner area. 18. From the dashboard, select OK to apply changes. The unwanted surface gets trimmed.

19. Next click on the extruded surface and right-click to display shortcut menu. 20. Select the Hide option to hide extruded surface.

21. Click on the remaining surface area and activate the Geometry Pattern (Model > Editing > Pattern > Geometry Pattern) to display Geometry Pattern dashboard. Activate the Axis Display checkbox from the Graphics toolbar. 22. Select the Axis option from the dashboard.

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23. Select the axis to display preview of the pattern features.

24. Replace 4 with the 6 in the pattern members and 90 with 60 in the angle between Pattern Members edit box in the dashboard. 25. From the dashboard, select OK to apply changes and display 3D model.

26. Click on any of the Pattern Member and activate the Thicken tool (Model > Editing > Thicken) to display Thicken dashboard. 27. Enter 6 in the Total thickening offset value edit box of the dashboard.

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28. From the dashboard, click on the OK button to apply changes and display 3D surface model with applied thickness. Deactivate the Axis Display checkbox from the Graphics toolbar (to hide it).

29. Save and close the file.

Example 2 (Millimetres) In this example, you will create the model shown below.

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Creo Parametric 7.0 - Step-By-Step Guide

1. Start Creo 6.0 by clicking the Creo Parametric 6.0 on your desktop. 2. Click on the New ( ) button from the Quick Access Toolbar to display the New dialog box. Alternatively press Ctrl + N key from the desktop to highlight the New dialog box. 3. In the New dialog box, select the Part radio button in the Type area and enter Ch11_Example02 in the Name edit box. 4. Also deselect the Use default template check box. 5. Click OK from the dialog box to display New File Options dialog box. 6. Click on the mmns_part_solid option and click on the OK button to enter in the Part environment.

7. Select the Blend tool (Model > Shapes > Blend) from the Ribbon to display Blend dashboard. 8. Click on the Sections tab and then click on the Define button to define the first section. 9. Next click on the Right Plane and press MMB to enter in the sketch environment.

10. Draw an open sketch for Section 1, as shown. 11. Select OK button from the Close group of the Sketch tab to exit from the sketch environment. 12. Click on the OK button from the Solid Surface Switch Option message box to continue, if displayed. Surface Design

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13. Again, draw another open section (Section 2) at a distance of 200 from Section 1. 14. Exit from the sketch environment to display preview of Blend feature between Section 1 and Section 2.

15. Similarly draw another section (Section 3) at a distance of 200 from Section 1 and 400 from the Section 2 in opposite direction.

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16. Exit from the sketch environment to display preview of Blend feature between Section 1, Section 2 and Section 3. 17. From the Blend dashboard, click on OK button to apply changes and display 3D surface model.

18. Activate the Blend tool and draw a sketch (Arc of radius 40) for Section 1 on Top Plane. Surface Design

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19. Now draw another open sketch at the distance of 300 from Section 1, as shown.

20. Exit from the sketch environment to display preview of Blend feature between Section 1 and Section 2. 21. From the Blend dashboard, select OK to apply changes. The 3D surface model gets displayed.

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22. Activate the Plane tool (Model > Datum > Plane) from the Ribbon. 23. Select the edge of the blend feature to display preview of the Plane over it. 24. Click on the OK button from the Datum Plane dialog box to display Datum Plane.

25. Activate the Fill tool (Model > Surfaces > Fill) and click on the recently created Datum Plane. 26. Activate the References tool (Sketch > Setup >References) and select the edge of the surface for reference, if required. 27. Draw the sketch for creating a Flat surface feature, as shown.

28. Close from the sketch environment. 29. From the Fill dashboard, select OK to apply changes and display model with Flat surface feature.

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30. Select the Blend and Fill feature and activate the Mirror tool. 31. Now select the Top plane, as shown.

32. From the Fill dashboard, select OK to display Mirror features.

33. Click on the two surfaces and activate the Merge tool (Model > Editing > Merge) to display Merge dashboard along with the preview of merged surfaces. 34. Click on the

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buttons from the dashboard to flip or highlight/select other portions, as shown.

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35. From the dashboard, click on the OK button to apply changes and display the merged surfaces.

36. Similarly merge the mirrored surface model also.

37. Using Fill tool create the Flat surface feature, as discussed earlier.

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38. Activate the Mirror tool and mirror the Fill surface feature, as shown.

39. Using the Merge tool, merge the selected surfaces, as shown.

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40. Similarly merge the other selected surfaces.

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41. Activate the Round tool (Model > Engineering > Round) to display Round dashboard. 42. Enter 25 in the edit box in the Round dashboard.

43. Select the edges of the surface model to display preview of the Round features.

44. From the dashboard, click on the OK button to apply changes and display surface model with round edges.

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45. Save and close the file.

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Questions: 1. How can we use the Fill tool? 2. Which tools are to trim unwanted surfaces? 3. Which tools is used to increase thickness of a surface model and how? 4. What is the use of Intersect tool in surfacing? 5. How can we project a curve over a surface model? 6. Which tool is used to convert multiple surfaces into a single surface?

Exercises: Exercise 1 Create the model shown next.

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Index 3 3 Point Tool ................................................................................. 30 3 Tangent Tool ...................................................................... 31, 33 3D Dragger ......................................................................... 308 310 3-Point/Tangent End Tool .......................................................... 32 45 x D ........................................................................................ 170

A Add Model option..................................................................... 352 Adds counterbore buttons ...................................................... 209 Adds countersink button ......................................................... 211 Adds tapping button ................................................................ 209 Alignment option ...................................................................... 351 Analysis Tab ................................................................................ 13 Angle Offset Constraint ............................................................ 314 Angle Plane ............................................................................... 149 Angular Dimension ..................................................................... 44 Arc Tool ....................................................................................... 31 Assemble tool/button ...................................................... 305, 306 Auto Round dashboard............................................................. 165 Auto Round Tool ....................................................................... 165 Automatic Constraint ............................................................... 312 Auxiliary View button ............................................................... 356 Axis Ends Ellipse Tool .................................................................. 35 Axis Patterns ............................................................................. 222 Angle x D ................................................................................... 167

B Baseline tool ............................................................................... 47 Blend dashboard ....................................................... 271, 275, 279 Blend Tool ................................................................................. 374 Blind .......................................................................................... 120 Boundary Blend tool ................................................................. 391

C Center and Axis Ellipse Tool ....................................................... 36 Center and Ends Tool ................................................................. 33 Center and Point ......................................................................... 29 Centerline tool ............................................................................ 38 Center Rectangle ........................................................................ 29 Centered Constraint ................................................................. 315 Centerline Drop-Down ............................................................... 37 Centerline Tangent Tool ............................................................. 38 Centerline Tool ........................................................................... 38 Chamfer Tool .............................................................................. 76 Chamfer Trim Tool ...................................................................... 76 Changing depth direction ......................................................... 122

Circle Tool ...................................................................................29 Circular Fillet Tool .......................................................................73 Circular Trim Fillet Tool ...............................................................74 Coaxial Hole.............................................................................. 206 Coincident Constraint ........................................................ 89, 314 Component Placement dashboard .......................................... 308 Concentric Tool .....................................................................30, 34 Conic Tool....................................................................................35 Constraints ..................................................................................86 Construction Mode tool..............................................................92 Coordinate System ......................................................................82 Coplanar Constraint ................................................................. 315 Corner Chamfer ....................................................................... 171 Corner Rectangle ........................................................................28 Corner tool ..................................................................................93 Create clearance hole .............................................................. 209 Create simple hole button ....................................................... 200 Create standard hole button ................................................... 207 Create tapered hole button .................................................... 211 Creo Parametric Options dialog box ....................... 14,16, 42, 194 Curve Patterns ......................................................................... 229 Custom scale radio button ....................................................... 350

D Datum Axis ............................................................................... 153 Datum Plane ............................................................................. 145 Datum Point ............................................................................. 159 Default Constraint .................................................................... 317 Delete ..........................................................................................51 Delete Segment...........................................................................93 Depth Value drop-down .................................................. 119, 206 Depth Value Edit box ........................................................ 125,200 Detailed View button ............................................................... 354 Diameter Dimension ...................................................................44 Diameter Hole .......................................................................... 204 Diameter Value edit box .......................................................... 200 Dim Orientation dialog box .........................................................47 Dimension Patterns.................................................................. 215 Dimensioning ..............................................................................39 Dim > Ref .....................................................................................52 Direction Patterns .................................................................... 219 Display Style drop-down .................................. 160, 187, 298, 350 Distance Constraint .................................................................. 313 Divide ..........................................................................................96 Drawing Models button ........................................................... 352 Drawing radio button ............................................... 345, 361, 368 Drawing View dialog box.......................................................... 347 Drilled hole diameter edit box ................................................. 209 D x D ......................................................................................... 166 D1 x D2 ..................................................................................... 168

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E Edge Chamfer ........................................................................... 166 Ellipse Tool .................................................................................. 35 Elliptical Fillet Tool ...................................................................... 75 Elliptical Trim Fillet Tool ............................................................. 75 Equal Constraint ......................................................................... 90 Exploded View .......................................................................... 318 Extend tool................................................................................ 431 Extrude as Solid ........................................................................ 119 Extrude as Surface .................................................................... 119 Extrude as surface button ........................................................ 416 Extrude dashboard ...................................119, 181, 243, 383, 416 Extrude tool ......................................119, 122, 124, 126, 383, 415 Extend tool............................................................................... 431

F File Menu ...................................................................................... 9 Fill Patterns ............................................................................... 223 Fill tool ...................................................................................... 420 Fillet Tool .................................................................................... 73 Fix Constraint ............................................................................ 316 Flange tool ................................................................................ 388 Flat Pattern tool ........................................................................ 394 Flat tool ..................................................................................... 384 Freestyle tool ............................................................................ 432

G General View tool ..................................................................... 347 Graphics Toolbar .......................................................................... 9

H Helical Sweep tool .................................................................... 263 Helical Sweep dashboard ......................................................... 263 Hole tool ................................................................................... 199 Hole dashboard ........................................................................ 199 Horizontal Constraint ................................................................. 87

I Intersect tool ............................................................................ 428

L Layout Tab .................................................................................. 13 Line Chain Tool ........................................................................... 27 Line Tangent Tool ....................................................................... 27 Line Tool ..................................................................................... 27

Linear Dimension ........................................................................43 Linear Hole ............................................................................... 200 Lock View Movement button ................................................. 360

M Merge tool ............................................................................... 425 Mid-point Constraint ..................................................................88 Mirror tool.................................................................. 94, 213, 428 Model Properties dialog box.................................................... 386 Model Tab ...................................................................................12 Model Tree ..................................................................................14 Model view names area. .......................................................... 348 Modify tool ..................................................................... 42, 49, 93

N Name edit box ...................................................................7, 21, 55 New tool ........................................................................................6 New Drawing dialog box .................................................. 345, 361 New Sheet button .................................................................... 357 Normal tool ....................................................................... 37, 106 Normal Axis .............................................................................. 154 Normal Constraint.................................................................... 314

O Offset Plane .............................................................................. 146 Offset Reference area ...................................................... 154, 205 Offset References Collector radio button................................ 202 Offset tool .................................................................. 78, 393, 422 Open button ..................................................................................7 O x O ......................................................................................... 170 O1 x O2..................................................................................... 171

P Palette tool ..................................................................................83 Parallel Constraint .............................................................. 91, 314 Parallel Plane ............................................................................ 152 Parallelogram ..............................................................................29 Pattern tool .............................................................................. 214 Perimeter tool .............................................................................47 Perpendicular Constraint ............................................................87 Planar tool ................................................................................ 381 Point Patterns .......................................................................... 230 Point tool .....................................................................................36 Profile Rib tool.......................................................................... 177 Project tool......................................................................... 80, 429 Projection view button ............................................................ 374

454

Q Quick Access Toolbar .................................................................... 5

R Radial Hole ................................................................................ 202 Rectangle tool ............................................................................. 28 Reference tool ........................................................................... 49 Remove Material button ................................... 85, 122, 243, 409 Resolve sketch ............................................................................ 51 Revolve as surface button ........................................................ 129 Revolve tool ...................................................................... 127, 417 Rib Feature ............................................................................... 173 Rotational Blend tool ................................................................ 282 Rotational Blend dashboard ..................................................... 282 Round dashboard ..................................................................... 161 Round Feature .......................................................................... 160 Round tool ................................................................................ 161

S Save button................................................................................... 8 Scale option .............................................................................. 350 Screw size drop-down .............................................................. 209 Select Combined State dialog box ............................................ 347 Select Working Directory............................................................ 10 Sheet Setup button................................................................... 357 Sheetmetal radio button .......................................................... 379 Shell tool ................................................................................... 172 Show Model Annotations button ............................................. 358 Sketch radio button .................................................................... 21 Sketch Tab .................................................................................. 12 Sketcher Display Filters drop-down ................................... 91, 107 Slanted Rectangle tool ................................................................ 29 Specify Template area .............................................................. 346 Spline tool ................................................................................... 36 Standard Hole ........................................................................... 207 Standard Size drop-down ......................................................... 346 Sweep dashboard ............................................................. 259, 262 Sweep drop-down .................................................................... 263 Sweep tool ........................................................................ 259, 262 Swept Blend .............................................................................. 271 Symmetric option ............................................................. 123, 190 Symmetric Constraint ................................................................. 89 System Colors option .................................................................. 14

Tangent Plane .......................................................................... 150 Tapered Hole............................................................................ 211 Text Tool......................................................................................77 Thicken Sketch ......................................................................... 122 Thicken Sketch buttons ........................................................... 127 Thicken tool........................................................................ 79, 426 Thread Type drop-down .......................................................... 209 Through All ............................................................................... 120 Through Axis ............................................................................ 156 Through Method ...................................................................... 148 Through Until ........................................................................... 121 To Next ..................................................................................... 121 To Selected ............................................................................... 122 Trajectory Ribs ......................................................................... 173 Trim tool ................................................................................... 423

U Use define template radio button ........................................... 345 Undo ……………………………………………..…...…………………………….….. 51

V Vertical Constraint ......................................................................86 View Display option ................................................................. 350 View Tab ......................................................................................13 View Type option ..................................................................... 348 View Visibility drop-down ........................................................ 349 Visible Area option ................................................................... 349

W Weak Dimensions .......................................................................39

T Table Patterns ........................................................................... 226 Table Tab .................................................................................... 13 Tangent Axis ............................................................................. 158 Tangent Constraint ............................................................. 87, 316

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