3D Computer Aided Design with NX10: Engineering Design in Computer Integrated Design and Manufacturing

Author(s): H Felix Lee

Edition: 9

Copyright: 2017

Pages: 612

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ISBN 9781524923891

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The 21st century manufacturing and production environment can be characterized by the paradigm of delivering products of increasing variety, lower demand and higher quality in the context of expanding global competition.  In order to realize this manufacturing paradigm and facilitate coordinated efforts across different departments, more and more companies are moving into computer-integrated production systems where computer technology is widely used to support design, manufacturing, and business operation in an integrated fashion.  The core of this computer technology includes computer-aided design (CAD), computer-aided manufacturing (CAM), and computer-aided analysis (CAE).

This book introduces CAD/CAM/CAE using NX with a focus on 3D CAD, as NX is a well-known high-performance product of Siemens used by numerous companies worldwide in diverse industries.  Some of the main topics covered in the book include:

  • 3-D solid and assembly modeling and drafting applications, and various model interrogation and visualization methods.  
  • Feature-based parametric and associative modeling practices are emphasized in order to teach good design practices capturing the design intent and easy changes of designs.  

This can serve as a stand-alone textbook for Engineering Design/Drawing or entry-level CAD/CAM courses in colleges and universities and for industry professionals.  No prerequisite is required.  Unlike other resources currently available, the author presents NX CAD in a way that coherently organizes the key features and functionalities of NX CAD that are most commonly used in engineering design. 

This book can also serve as a supplement to upper-level CAD/CAM theory-oriented books.  It provides many hands-on design projects with real applications including one CAD/CAMCAE case study.  Each chapter has chapter review questions and two types of projects: step-by-step guided projects and more challenging projects with no guided instructions.  The latter projects can be used for homework assignments and tests. Instructors adopting this book can download all of the solution files for these projects and chapter review questions directly from the publisher.

The author has taught this subject for more than 20 years to college students and Boeing and other industry professionals.  This book captures the best teaching practices of the subject from his wealthy teaching experience!

About the Author

Dedication

Preface

Chapter 1. Introduction

1.1 Overview of Computer Integrated Design and Manufacturing

1.2 Introduction to NX

1.3 Getting Started with NX

Exercise Problems

Chapter 2. A Case Study for CAD/CAM/CAE

2.1 CAD for 3-D Solid Modeling

2.2 CAE for Design Analysis

2.3 CAM for Cutting Tool Path Generation

Exercise Problems

Chapter 3. NX Essentials

3.1 Different Approaches to Modeling Objects in Space

3.2 Coordinate Systems and Right-Hand Rules

3.3 The Absolute Coordinate System (ABS)

3.4 The Work Coordinate System (WCS)

3.5 Manipulating the WCS

3.6 The Feature Coordinate System

3.7 Defining Points for Reference and Location in NX

Activity 3-1. Working with the WCS

3.8 Controlling the Visibility of Objects

3.9 Selecting Objects Using Quick Pick Selection

3.10 Utilizing the Class Selection Dialog

3.11 User Interface Shortcuts

3.12 Default Files in NX

3.13 Obtaining Help

3.14 Unit System and Unit Setting

Exercise Problems

Chapter 4. Primitives

4.1 Common Procedure to Create a Primitive

4.2 Block

4.3 Cylinder

4.4 Cone

Activity 4-1. Creating a Model with Two Blocks

Activity 4-2. Creating a Cylinder

Activity 4-3. Creating a Cone

Project 4-1. Primitives

Exercise Problems

Chapter 5. Basic Form Features

5.1 Common Procedure to Create a Feature

5.2 Positioning Form Features

5.3 Hole

5.4 Boss

Activity 5-1. Creating Holes

5.5 Pocket

5.6 Pad

5.7 Slot

Activity 5-2. Creating a Thru T-slot

Activity 5-3. Editing an Existing Slot and Creating a Pad

Activity 5-4. Comparison of Modeling Approaches: Primitives vs. Design Features

Project 5-1. Shaft Support

Project 5-2. Bracket

Project 5-3. Mounting Plate

Exercise Problems

Chapter 6. Querying and Editing Models

6.1 Using Layers to Find Objects

6.2 The Part Navigator (PN)

Activity 6-1. Practice with Layers and Part Navigator (PN)

6.3 Expressions

6.4 Playback a Model

6.5 Information Browser

6.6 Distance Between Objects

Activity 6-2. Query and Parametric Modification of a Part

Project 6-1. Two Changes in Design Intent

Exercise Problems

Chapter 7. Feature Operations on Edge and Face

7.1 Edge Blend

Activity 7-1. Creating Edge Blends

Project 7-1. Pivot Arm

7.2 Chamfer

Activity 7-2. Creating Chamfers

Project 7-2. Mounting Block

7.3 Shell

Activity 7-3. Creating Shell

Project 7-3. Shell Project

Project 7-4. Swivel Bracket

Project 7-5. Tool Holder

Exercise Problems

Chapter 8. Reference Features

8.1 Datum Planes

Activity 8-1. Creating Relative Datum Planes with a Single Constraint

Activity 8-2. Creating Relative Datum Planes with Dual Constraints

8.2 Datum Axis

Activity 8-3. Creating Relative Datum Axes

Activity 8-4. Creating an Angled Hole Using Reference Features

Project 8-1. Spindle

Project 8-2. Spin Block

Project 8-3. Retainer

Project 8-4. Block with an Angled Hole

Exercise Problems

Chapter 9. Boolean Operations and Swept Features

9.1 Boolean Operations

9.2 Extrude

Activity 9-1. Creating an Extrusion

Activity 9-2. Another Extrude

Activity 9-3. Extrude with Offset

9.3 Revolve

Activity 9-4. Revolve to Create Solid

Activity 9-5. Create the Revolve with Offset

Project 9-1. Retainer 2

Project 9-2. Angled Bracket

Exercise Problems

Chapter 10. Introduction to Sketching

10.1 Concepts of Sketching

10.2 Creating Sketches

Activity 10-1. Creating a Free-Hand Sketch

Activity 10-2. Sweep the Profile into a Solid Body

Activity 10-3. Creating Curves in Profile Mode

10.3 Sketch Constraining

Activity 10-4. Application of Constraints to a Profile

Activity 10-5. Update the Solid Body

Activity 10-6. Constraining a Sketch

10.4 Using Sketches to Create Form Features

Activity 10-7. Creating the Rotator Arm

10.5 Creating a Sketch-Based Hole

Project 10-1. Fixture

Project 10-2. Adaptor Block

Project 10-3. Bracket Using Sketches

Exercise Problems

Chapter 11. Associative Copy, Trim Body, and Thread

11.1 Associative Copy

Activity 11-1. Creating a Linear Pattern of Features

Activity 11-2. Creating a Circular Pattern of Features

Activity 11-3. Creating a Pattern Using Faces

Activity 11-4. Creating a Mirror Geometry

Activity 11-5. Creating a Mirror Feature

11.2 Trim Body

Activity 11-6. Trimming a Solid Body

11.3 Thread

Activity 11-7. Creating a Thread

Project 11-1. Ratchet

Project 11-2. Protector

Project 11-3. Shelf Stud

Project 11-4. Flat Screw

Exercise Problems

Chapter 12. Introduction to Assembly Modeling

12.1 What Is NX Assemblies?

12.2 NX Assemblies Definitions and Terminology

12.3 Bottom-Up Design

Activity 12-1. Creating an Assembly Bottom-Up

Project 12-1. Bottom-Up Assembly Modeling

12.4 The Assembly Navigator Tool (ANT)

12.5 Top-Down Design

Activity 12-2. Creating an Assembly Top-Down

Activity 12-3. Checking Linkage between Components

Project 12-2. Add Another Locator Pin

12.6 Reference Sets

Activity 12-4. Creating Reference Sets

12.7 Assembly Constraints

Activity 12-5. Create Assembly Constraints

12.8 Mating Conditions and Assembly Constraints

Project 12-3. Adding Components and Assembly Constraints

Project 12-4. Caster Assembly

Project 12-5. Wheel Support Assembly with Assembly Constraints

Exercise Problems

Chapter 13. Master Model

13.1 The Master Model Concept

13.2 Benefits of the Master Model

13.3 How Is Master Model Accomplished?

13.4 Master Model in Practice

Activity 13-1. Exploring the Benefits of Master Model

Activity 13-2. Creating a Master Model Assembly for Drafting

Exercise Problems

Chapter 14. Introduction to Drafting

14.1 Introduction to the Drafting Application

14.2 Creating Drawings and Adding Views

Activity 14-1. Create a Drawing

14.3 Creating Dimensions

Activity 14-2. Dimensioning a Part

14.4 Customizing Drawings

Activity 14-3. Applying the Hidden Lines View Display

Activity 14-4. Applying Annotation Changes to Dimensions

Activity 14-5. Customizing a Drawing

14.5 Notes and Labels

Activity 14-6. Adding Labels

14.6 Modifying Drawings

Activity 14-7. Modify a Drawing

Activity 14-8. Removing Views from a Drawing

14.7 Creating Utility Symbols

Activity 14-9. Creating a Linear Centerline

Activity 14-10. Creating a Cylindrical Centerline

Project 14-1. Drafting Baseplate Assembly Components

Project 14-2. Drafting Rotator Arm

Exercise Problems

Appendix A. Guided Student Assembly Project: Building the Geneva

CAM Assembly Model

Section 1. Modeling Individual Parts

1-1 Creating the Index

1-2 Creating the Index Plate

1-3 Creating the Geneva

1-4 Creating the Bushing

1-5 Creating the Washer

1-6 Creating the Nut

1-7 Creating the Cap Screw

1-8 Creating the Shaft

1-9 Creating the Set Screw

Section 2. Assembly Modeling

2-1 Assembling Parts with Move Only

2-2 Assembling Parts with Assembly Constraints

2-3 Assembling Parts with Interpart Modeling

Appendix B. Additional Design and Assembly Projects

Project B-1. Double Bearing Assembly

Project B-2. Double Block Assembly

Project B-3. Wheel Support Assembly

Project B-4. Shock Assembly

Project B-5. Butterfly Valve Assembly

Appendix C. Glossary

H Felix Lee

H. Felix Lee is Professor of Department of Mechanical and Industrial Engineering at Southern Illinois University Edwardsville and was Program Director of Industrial and Manufacturing Engineering Program for six years.  He holds a Ph.D. in Industrial and Operations Engineering from the University of Michigan, an M.S. in Industrial Engineering and Management from Oklahoma State University, and a B.S. in Industrial Engineering from Hanyang University in S. Korea.  His area of interest is in computer integrated design and manufacturing.  He renovated Manufacturing Engineering curriculum and courses with introduction of Unigraphics NX CAD/CAM/CAE, and has taught students and Boeing engineers with these courses for 20 years.  He was a recipient of NSF grants on developing an integrated design-aid tool for flexible manufacturing systems and developing a state-of-art supply-chain system.  Dr. Lee is a member of SME, IIE, Tau Beta Pi, and Phi Kappa Phi.  His papers appear in numerous refereed journals, books, and proceedings.  In 2004, he organized the CAD/CAM/CAE student design contest in the PLM (Product Lifecycle Management) World Conference and chaired the first five contests in the 2004 through 2008 conferences that were held in Anaheim, CA, Dallas, TX, Long Beach, CA, and Orlando, FL.

The 21st century manufacturing and production environment can be characterized by the paradigm of delivering products of increasing variety, lower demand and higher quality in the context of expanding global competition.  In order to realize this manufacturing paradigm and facilitate coordinated efforts across different departments, more and more companies are moving into computer-integrated production systems where computer technology is widely used to support design, manufacturing, and business operation in an integrated fashion.  The core of this computer technology includes computer-aided design (CAD), computer-aided manufacturing (CAM), and computer-aided analysis (CAE).

This book introduces CAD/CAM/CAE using NX with a focus on 3D CAD, as NX is a well-known high-performance product of Siemens used by numerous companies worldwide in diverse industries.  Some of the main topics covered in the book include:

  • 3-D solid and assembly modeling and drafting applications, and various model interrogation and visualization methods.  
  • Feature-based parametric and associative modeling practices are emphasized in order to teach good design practices capturing the design intent and easy changes of designs.  

This can serve as a stand-alone textbook for Engineering Design/Drawing or entry-level CAD/CAM courses in colleges and universities and for industry professionals.  No prerequisite is required.  Unlike other resources currently available, the author presents NX CAD in a way that coherently organizes the key features and functionalities of NX CAD that are most commonly used in engineering design. 

This book can also serve as a supplement to upper-level CAD/CAM theory-oriented books.  It provides many hands-on design projects with real applications including one CAD/CAMCAE case study.  Each chapter has chapter review questions and two types of projects: step-by-step guided projects and more challenging projects with no guided instructions.  The latter projects can be used for homework assignments and tests. Instructors adopting this book can download all of the solution files for these projects and chapter review questions directly from the publisher.

The author has taught this subject for more than 20 years to college students and Boeing and other industry professionals.  This book captures the best teaching practices of the subject from his wealthy teaching experience!

About the Author

Dedication

Preface

Chapter 1. Introduction

1.1 Overview of Computer Integrated Design and Manufacturing

1.2 Introduction to NX

1.3 Getting Started with NX

Exercise Problems

Chapter 2. A Case Study for CAD/CAM/CAE

2.1 CAD for 3-D Solid Modeling

2.2 CAE for Design Analysis

2.3 CAM for Cutting Tool Path Generation

Exercise Problems

Chapter 3. NX Essentials

3.1 Different Approaches to Modeling Objects in Space

3.2 Coordinate Systems and Right-Hand Rules

3.3 The Absolute Coordinate System (ABS)

3.4 The Work Coordinate System (WCS)

3.5 Manipulating the WCS

3.6 The Feature Coordinate System

3.7 Defining Points for Reference and Location in NX

Activity 3-1. Working with the WCS

3.8 Controlling the Visibility of Objects

3.9 Selecting Objects Using Quick Pick Selection

3.10 Utilizing the Class Selection Dialog

3.11 User Interface Shortcuts

3.12 Default Files in NX

3.13 Obtaining Help

3.14 Unit System and Unit Setting

Exercise Problems

Chapter 4. Primitives

4.1 Common Procedure to Create a Primitive

4.2 Block

4.3 Cylinder

4.4 Cone

Activity 4-1. Creating a Model with Two Blocks

Activity 4-2. Creating a Cylinder

Activity 4-3. Creating a Cone

Project 4-1. Primitives

Exercise Problems

Chapter 5. Basic Form Features

5.1 Common Procedure to Create a Feature

5.2 Positioning Form Features

5.3 Hole

5.4 Boss

Activity 5-1. Creating Holes

5.5 Pocket

5.6 Pad

5.7 Slot

Activity 5-2. Creating a Thru T-slot

Activity 5-3. Editing an Existing Slot and Creating a Pad

Activity 5-4. Comparison of Modeling Approaches: Primitives vs. Design Features

Project 5-1. Shaft Support

Project 5-2. Bracket

Project 5-3. Mounting Plate

Exercise Problems

Chapter 6. Querying and Editing Models

6.1 Using Layers to Find Objects

6.2 The Part Navigator (PN)

Activity 6-1. Practice with Layers and Part Navigator (PN)

6.3 Expressions

6.4 Playback a Model

6.5 Information Browser

6.6 Distance Between Objects

Activity 6-2. Query and Parametric Modification of a Part

Project 6-1. Two Changes in Design Intent

Exercise Problems

Chapter 7. Feature Operations on Edge and Face

7.1 Edge Blend

Activity 7-1. Creating Edge Blends

Project 7-1. Pivot Arm

7.2 Chamfer

Activity 7-2. Creating Chamfers

Project 7-2. Mounting Block

7.3 Shell

Activity 7-3. Creating Shell

Project 7-3. Shell Project

Project 7-4. Swivel Bracket

Project 7-5. Tool Holder

Exercise Problems

Chapter 8. Reference Features

8.1 Datum Planes

Activity 8-1. Creating Relative Datum Planes with a Single Constraint

Activity 8-2. Creating Relative Datum Planes with Dual Constraints

8.2 Datum Axis

Activity 8-3. Creating Relative Datum Axes

Activity 8-4. Creating an Angled Hole Using Reference Features

Project 8-1. Spindle

Project 8-2. Spin Block

Project 8-3. Retainer

Project 8-4. Block with an Angled Hole

Exercise Problems

Chapter 9. Boolean Operations and Swept Features

9.1 Boolean Operations

9.2 Extrude

Activity 9-1. Creating an Extrusion

Activity 9-2. Another Extrude

Activity 9-3. Extrude with Offset

9.3 Revolve

Activity 9-4. Revolve to Create Solid

Activity 9-5. Create the Revolve with Offset

Project 9-1. Retainer 2

Project 9-2. Angled Bracket

Exercise Problems

Chapter 10. Introduction to Sketching

10.1 Concepts of Sketching

10.2 Creating Sketches

Activity 10-1. Creating a Free-Hand Sketch

Activity 10-2. Sweep the Profile into a Solid Body

Activity 10-3. Creating Curves in Profile Mode

10.3 Sketch Constraining

Activity 10-4. Application of Constraints to a Profile

Activity 10-5. Update the Solid Body

Activity 10-6. Constraining a Sketch

10.4 Using Sketches to Create Form Features

Activity 10-7. Creating the Rotator Arm

10.5 Creating a Sketch-Based Hole

Project 10-1. Fixture

Project 10-2. Adaptor Block

Project 10-3. Bracket Using Sketches

Exercise Problems

Chapter 11. Associative Copy, Trim Body, and Thread

11.1 Associative Copy

Activity 11-1. Creating a Linear Pattern of Features

Activity 11-2. Creating a Circular Pattern of Features

Activity 11-3. Creating a Pattern Using Faces

Activity 11-4. Creating a Mirror Geometry

Activity 11-5. Creating a Mirror Feature

11.2 Trim Body

Activity 11-6. Trimming a Solid Body

11.3 Thread

Activity 11-7. Creating a Thread

Project 11-1. Ratchet

Project 11-2. Protector

Project 11-3. Shelf Stud

Project 11-4. Flat Screw

Exercise Problems

Chapter 12. Introduction to Assembly Modeling

12.1 What Is NX Assemblies?

12.2 NX Assemblies Definitions and Terminology

12.3 Bottom-Up Design

Activity 12-1. Creating an Assembly Bottom-Up

Project 12-1. Bottom-Up Assembly Modeling

12.4 The Assembly Navigator Tool (ANT)

12.5 Top-Down Design

Activity 12-2. Creating an Assembly Top-Down

Activity 12-3. Checking Linkage between Components

Project 12-2. Add Another Locator Pin

12.6 Reference Sets

Activity 12-4. Creating Reference Sets

12.7 Assembly Constraints

Activity 12-5. Create Assembly Constraints

12.8 Mating Conditions and Assembly Constraints

Project 12-3. Adding Components and Assembly Constraints

Project 12-4. Caster Assembly

Project 12-5. Wheel Support Assembly with Assembly Constraints

Exercise Problems

Chapter 13. Master Model

13.1 The Master Model Concept

13.2 Benefits of the Master Model

13.3 How Is Master Model Accomplished?

13.4 Master Model in Practice

Activity 13-1. Exploring the Benefits of Master Model

Activity 13-2. Creating a Master Model Assembly for Drafting

Exercise Problems

Chapter 14. Introduction to Drafting

14.1 Introduction to the Drafting Application

14.2 Creating Drawings and Adding Views

Activity 14-1. Create a Drawing

14.3 Creating Dimensions

Activity 14-2. Dimensioning a Part

14.4 Customizing Drawings

Activity 14-3. Applying the Hidden Lines View Display

Activity 14-4. Applying Annotation Changes to Dimensions

Activity 14-5. Customizing a Drawing

14.5 Notes and Labels

Activity 14-6. Adding Labels

14.6 Modifying Drawings

Activity 14-7. Modify a Drawing

Activity 14-8. Removing Views from a Drawing

14.7 Creating Utility Symbols

Activity 14-9. Creating a Linear Centerline

Activity 14-10. Creating a Cylindrical Centerline

Project 14-1. Drafting Baseplate Assembly Components

Project 14-2. Drafting Rotator Arm

Exercise Problems

Appendix A. Guided Student Assembly Project: Building the Geneva

CAM Assembly Model

Section 1. Modeling Individual Parts

1-1 Creating the Index

1-2 Creating the Index Plate

1-3 Creating the Geneva

1-4 Creating the Bushing

1-5 Creating the Washer

1-6 Creating the Nut

1-7 Creating the Cap Screw

1-8 Creating the Shaft

1-9 Creating the Set Screw

Section 2. Assembly Modeling

2-1 Assembling Parts with Move Only

2-2 Assembling Parts with Assembly Constraints

2-3 Assembling Parts with Interpart Modeling

Appendix B. Additional Design and Assembly Projects

Project B-1. Double Bearing Assembly

Project B-2. Double Block Assembly

Project B-3. Wheel Support Assembly

Project B-4. Shock Assembly

Project B-5. Butterfly Valve Assembly

Appendix C. Glossary

H Felix Lee

H. Felix Lee is Professor of Department of Mechanical and Industrial Engineering at Southern Illinois University Edwardsville and was Program Director of Industrial and Manufacturing Engineering Program for six years.  He holds a Ph.D. in Industrial and Operations Engineering from the University of Michigan, an M.S. in Industrial Engineering and Management from Oklahoma State University, and a B.S. in Industrial Engineering from Hanyang University in S. Korea.  His area of interest is in computer integrated design and manufacturing.  He renovated Manufacturing Engineering curriculum and courses with introduction of Unigraphics NX CAD/CAM/CAE, and has taught students and Boeing engineers with these courses for 20 years.  He was a recipient of NSF grants on developing an integrated design-aid tool for flexible manufacturing systems and developing a state-of-art supply-chain system.  Dr. Lee is a member of SME, IIE, Tau Beta Pi, and Phi Kappa Phi.  His papers appear in numerous refereed journals, books, and proceedings.  In 2004, he organized the CAD/CAM/CAE student design contest in the PLM (Product Lifecycle Management) World Conference and chaired the first five contests in the 2004 through 2008 conferences that were held in Anaheim, CA, Dallas, TX, Long Beach, CA, and Orlando, FL.