Computer Aided Design Engineering Design and Modeling using AutoCAD

Cover
Half Title
Title Page
Copyright Page
Dedication
Table of Contents
Preface
Acknowledgements
Author
Abbreviations
Chapter 1: Introduction
	1.1 Background and history of CAD
	1.2 Hardware and software requirements and devices
		1.2.1 Input devices
		1.2.2 Processors
		1.2.3 Output devices
		1.2.4 Software
	1.3 Background to AutoCAD
	1.4 Limitations to the use of CAD
	1.5 Basics for using AutoCAD
		1.5.1 AutoCAD screen
		1.5.2 Keyboard and mouse
		1.5.3 Object handles
		1.5.4 Methods of entering commands
		1.5.5 Specifying coordinates/points to the drawing editor
		1.5.6 Setting drawing limits and scales
		1.5.7 Types of lines used in AutoCAD
		1.5.8 Saving drawings and file exchange formats
	1.6 Summary and outline of book
Chapter 2: Two-dimensional drawing primitives for CAD
	2.1 Introduction and origins of graphic displays on computer
	2.2 Two-dimensional CAD coordinate system
	2.3 Two-dimensional geometric primitives and parameters
		2.3.1 Line and multiple lines
		2.3.2 Circle, arc and ellipse
		2.3.3 Polygon
		2.3.4 Polyline
	2.4 Insertion of text in AutoCAD drawings
	2.5 Creating a drawing template
	2.6 Practical applications
		2.6.1 Linear transformations and curve approximations
		2.6.2 Bezier curves and surfaces
	2.7 Summary
	2.8 Review exercises
Chapter 3: Editing CAD drawings
	3.1 Introduction
	3.2 Basic editing tools and modifications
		3.2.1 Navigating through the drawing and environment
		3.2.2 Entity properties
		3.2.3 Erase
		3.2.4 Move or copy
		3.2.5 Trim and extend
		3.2.6 Stretch
		3.2.7 Break
		3.2.8 Explode
		3.2.9 Scale and zoom
		3.2.10 Editing polylines
		3.2.11 Multiple line editing at junctions
	3.3 Advanced editing
		3.3.1 Rectangular and polar arrays
		3.3.2 Offset
		3.3.3 Fillet and chamfer
		3.3.4 Mirror
		3.3.5 Divide, measure and distance
		3.3.6 Hatching
		3.3.7 Regeneration
	3.4 Applications and productivity
	3.5 Summary
	3.6 Review exercises
Chapter 4: Dimensioning CAD drawings
	4.1 Introduction
	4.2 Dimensioning styles
		4.2.1 Dimensioning attributes/terminology
		4.2.2 Types of arrows
		4.2.3 Text position and fit
		4.2.4 Tolerances
	4.3 Dimension types
	4.4 Inserting dimensions
	4.5 Modifying dimensions
	4.6 Applications: common mistakes and remedies
		4.6.1 Superfluous dimensions
		4.6.2 Insufficient dimensions
		4.6.3 Crisscrossing dimensions
		4.6.4 Incomplete specifications
		4.6.5 Over-constrained tolerances
	4.7 Summary
	4.8 Review exercises
Chapter 5: Layers
	5.1 Introduction
	5.2 Layer properties manager
		5.2.1 Turning layers ON or OFF
		5.2.2 Locking or unlocking layers
		5.2.3 Freezing and thawing layers
	5.3 Practical applications
	5.4 Summary
	5.5 Review exercises
Chapter 6: Orthographic and isometric projections
	6.1 Introduction
	6.2 Angles of projection
		6.2.1 First angle projection
		6.2.2 Third angle projection
		6.2.3 Differences and applications of projections
	6.3 Orthographic projections from pictorial views
	6.4 Isometric projections from orthographic views
	6.5 Boxing method
	6.6 Applications and limitations
	6.7 Summary
	6.8 Review exercises
Chapter 7: Blocks and attributes
	7.1 Introduction
	7.2 Creating and saving blocks in catalogues
	7.3 Inserting blocks into drawings
	7.4 Typical blocks and their attributes
	7.5 Applications and tutorial in electronics
		7.5.1 Block attribute definition, attaching and modification
		7.5.2 Managing block attributes
		7.5.3 Extracting attributes and generating bills of materials
	7.6 Case study: CAD suite for the automatic generation of bills of materials
		7.6.1 Database management in engineering design and manufacture
		7.6.2 Case study company details
		7.6.3 Development of the BOM add-on utility
		7.6.4 Implementation of the BOM utility
		7.6.5 Implications and achievements of the BOM utility
	7.7 Summary
	7.8 Review exercises
Chapter 8: Three-dimensional wireframe and surface modelling
	8.1 Introduction
	8.2 3D coordinate system
	8.3 Viewing points
	8.4 Wireframe modelling
	8.5 Surface modelling
		8.5.1 3D face
		8.5.2 Edge surface
		8.5.3 Ruled surface
		8.5.4 Tabulated surface
		8.5.5 Elevation
		8.5.6 Surface of revolution
	8.6 Applications and limitations of wireframe and surface models
	8.7 Summary
	8.8 Review exercises
Chapter 9: Three-dimensional solid modelling
	9.1 Introduction
	9.2 Boundary representation (B-Rep) and solids of extrusion
	9.3 Constructive solid geometry (CSG)
		9.3.1 Solid primitives and building blocks
		9.3.2 Boolean algebra and operations on solid primitives
	9.4 Solid of revolution
	9.5 Visualization of 3D models
	9.6 Rendering and specifying materials for 3D models
		9.6.1 Visual styles and lighting
		9.6.2 Specifying and editing materials to 3D solids
	9.7 Practical applications for 3D modelling
		9.7.1 CSG models
		9.7.2 Rendered images
		9.7.3 3D printing
	9.8 Summary
	9.9 Review exercises
Chapter 10: 3D solid modelling in assembly and analysis
	10.1 Introduction
	10.2 Modelling wheel base assembly: tutorial
		10.2.1 Modelling the wheel
		10.2.2 Modelling the shaft and fitting to wheel
		10.2.3 Modelling and assembling the bushes
		10.2.4 Modelling and assembling the arms
		10.2.5 Modelling and assembling the base
	10.3 Analysis of the solid model
		10.3.1 Sectioning model of the assembly
		10.3.2 Checking for interferences
		10.3.3 Determining mass properties
		10.3.4 Automatically generating orthographic views
	10.4 Modelling connecting rod for a diesel engine: case study
		10.4.1 Modelling the connecting road primitives
		10.4.2 Composite modelling of the connecting rod
		10.4.3 Assembling the connecting rod
		10.4.4 Sectioning (slicing) model of assembly
		10.4.5 Other derivatives from the modelled connecting rod
	10.5 Summary
	10.6 Review exercises
Chapter 11: Customization of CAD software
	11.1 Introduction
	11.2 Program parameters
		11.2.1 Modifying the program parameters
		11.2.2 Reinitializing program parameters
	11.3 Command aliases
	11.4 Customizing menus
		11.4.1 Menu file structure (earlier versions)
		11.4.2 Pull-down menus
		11.4.3 Cascading pull-down menus
		11.4.4 On-screen menus
	11.5 Customized pull-down menus
		11.5.1 Customizing pull-down menus – earlier versions
		11.5.2 Customizing menus and toolbars – AutoCAD 2021
	11.6 Icon menus
	11.7 Automation of tasks – script files
	11.8 Customizing linetypes
	11.9 Customizing hatch patterns
	11.10 Case study for a power and electricity distribution company
		11.10.1 Customization strategies adopted
		11.10.2 Results obtained
		11.10.3 CAID accomplishments
	11.11 Summary
	11.12 Review Exercises
Chapter 12: Management of models and drawings for output
	12.1 Introduction
	12.2 Model and paper spaces in AutoCAD
	12.3 Viewports
	12.4 Modelling cast iron base
		12.4.1 Model space viewports
		12.4.2 Paper space viewports
	12.5 Configuring printer or plotter
	12.6 Print/plot dialogue box
		12.6.1 Plot style/pen assignments
		12.6.2 Print/plot formats
	12.7 Cloud revisions in AutoCAD
	12.8 Summary
	12.9 Review exercises
Chapter 13: Further practical applications for CAD: Case studies
	13.1 Introduction
	13.2 Applications of AutoLISP in mechanism design and analysis
		13.2.1 Background to AutoLISP and case study
		13.2.2 Geometrical modelling of a slider-crank mechanism
		13.2.3 AutoLISP programming for simulation and analysis
		13.2.4 Results and implications
	13.3 Modelling and simulation using EdenLISP
		13.3.1 Background to EdenLISP and case study
		13.3.2 Geometrical modelling of the dump truck mechanism
		13.3.3 Mathematical modelling of the dump truck mechanism
		13.3.4 Simulation of the mechanism using EdenLISP
		13.3.5 Results and implications
	13.4 Digital inventory codification system
		13.4.1 Background to case study and inventory control
		13.4.2 Inventory control systems and behaviour
		13.4.3 Data collection and analysis
		13.4.4 Design of the inventory control system
		13.4.5 Results and implications
	13.5 Summary
	13.6 Review exercises
Chapter 14: Typical examination questions
	Question 1
	Question 2
	Question 3
	Question 4
	Question 5
	Question 6
	Question 7
	Question 8
	Question 9
	Question 10
	Question 11
	Question 12
	Question 13
	Question 14
Appendix A1: Selected program listings for the bom utility module for Chapter 7
	Appendix A1.1
	Appendix A1.2
	Appendix A1.3
	Appendix A1.4
	Appendix A1.5
	Appendix A1.6
	Appendix A1.7
	Appendix A1.8
Appendix A2: Selected program listings for mechanisms for Chapter 13
	Appendix A2.1
	Appendix A2.2
References
Index