Principles of CAD

Many books already exist on computer-aided design and manufacture most of which are dedicated to describing the complexities of mathematical modelling and its application to industrial problems. In the experience of the present authors, however, if the subject is to be understood within its true, industrial context it must be taught in relation to the design process. Thus, while this book discusses both modelling and industrial applications, it also tries to provide an insight into design methodology, system selection and usage, and the social relationships that exist within design and manufacturing facilities. The teaching modules which make up the book are the distillation of material used by the authors both for undergraduate courses in CAD at BruneI University, and for seminars given to industrial users. The modules are not intended to be used in isolation, but rather to serve as an introductory survey which will enable students to grasp the broad outlines of the subject. Most aspects ofthe course presented here will need to be supported by further work and reading (see 'Further Reading'). In the authors' own courses much of the geometric and modelling work described in the text is supported by tutorial activities using the university department's commercial and research CAD/CAM systems. These include the Computervision-CADDS4X and Personal Systems.

Section 1 The Design Process. - Module 1. 1 The Relationship between Geometry and Function. - Module 1. 2 The Form of the Design Process. - Module 1. 3 Traditional Drawing Practices. - Module 1. 4 The Development of the CAD Industry. - Exercises. - Section 2 System Configuration. - Module 2. 1 Workstations. - Module 2. 2 Computers Mainframes to Micros. - Module 2. 3 Output Devices. - Module 2. 4 Data Storage. - Module 2. 5 Networked Systems. - Exercises. - Section 3 Entity Descriptions. - Module 3. 1 Points, Lines and Circular Arcs. - Module 3. 2 Basic Geometric Manipulations. - Module 3. 3 Free-form Curves 1. - Module 3. 4 Free-form Curves 2. - Module 3. 5 Finding Intersections of Free-form Curves. - Module 3. 6 Surfaces. - Exercises. - Section 4 View Transformations. - Module 4. 1 Two-dimensional Transformations Pan, Rotate and Zoom. - Module 4. 2 Three-dimensional Transformation Matrices. - Module 4. 3 Axial and Observer Systems. - Module 4. 4 The Use of Perspective. - Module 4. 5 Multi-view Presentations. - Module 4. 6 Advanced Viewing Techniques. - Exercises. - Section 5 Types of CAD Modelling Systems. - Module 5. 1 Two-dimensional Drafting Practice. - Module 5. 2 Three-dimensional Wireframe Models. - Module 5. 3 Surface Modelling. - Module 5. 4 Solid Modelling. - Module 5. 5 Display of Solid Models. - Exercises. - Section 6 The User Interface. - Module 6. 1 User Command Language. - Module 6. 2 Use of Menus. - Module 6. 3 Graphics Interface Languages. - Module 6. 4 Use of Parametrics. - Exercises. - Section 7 System Effectiveness and Organization. - Module 7. 1 Information Flow. - Module 7. 2 Establishing Design Needs. - Module 7. 3 Identifying Benefits. - Module 7. 4 Training for Operation. - Module 7. 5 Working Environment. - Module 7. 6 Design and Social Structure. - Module 7. 7 System Management. - Exercises. - Section 8 ApplicationsPrograms. - Module 8. 1 Analysis-centred Applications Programs. - Module 8. 2 Manufacturing-centred Applications Programs. - Module 8. 3 Control-centred Applications Programs. - Further Reading.