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Mastering CAD/CAM

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Title: Mastering CAD/CAM


1
Mastering CAD/CAM
  • Ibrahim Zeid

2
CHAPTER 1 - INTRODUCTION
  • GOAL
  • Understand and master the nature of CAD/CAM
    systems, their basic
  • structure, their use in engineering tasks, and
    their use to create geometric
  • models of simple parts.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Product life cycle
  • Scope of CAD/CAM
  • CAD/CAM Applications
  • Acquiring CAD/CAM Systems
  • Installing CAD/CAM Systems
  • Becoming familiar with CAD/CAM systems
  • GUIs and Help menus
  • Demo parts

3
CHAPTER 2 3D MODELING AND VIEWING
  • GOAL
  • Understand and master the basic concepts of 3D
    modeling and viewing,
  • the difference between them, the control of
    modeling via sketch planes,
  • and the effective use of CAD/CAM systems in
    geometric modeling.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Types of geometric models
  • Coordinate systems
  • Sketching and sketch planes
  • Modeling entities and features
  • Modeling operations
  • Modeling strategies
  • Model viewing
  • System modes

4
CHAPTER 3 MODELING AIDS AND TOOLS
  • GOAL
  • Understand and master modeling aids and
    manipulations, know the
  • available tools offered by CAD/CAM systems, and
    learn how and when
  • to use the tools to speed up geometric
    construction.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Geometric modifiers
  • Layers
  • Colors
  • Grids
  • Groups
  • Entity selection
  • Entity manipulation
  • Entity editing

5
CHAPTER 4 ENGINEERING DRAWINGS
  • GOAL
  • Understand and master the creation of engineering
    drawings, their use in
  • design documentation, their use in manufacturing
    activities, the
  • information that a drawing stores, and how to
    avoid over- or under-
  • dimensioning.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Engineering drawings (blueprints)
  • CAD drawings
  • CAD views
  • Title block
  • Dimensioning
  • Tolerances
  • Notes and labels
  • Manufacturing information

6
CHAPTER 5 CAD/CAM PROGRAMMING
  • GOAL
  • Understand and master the concepts of
    object-oriented programming
  • and their use in parametric design, become
    familiar with customizing
  • CAD/CAM systems, and know the various methods of
    CAD/CAM
  • programming.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Object definition
  • Object creation and use
  • Inheritance
  • Macros
  • CAD/CAM API functions
  • C and OpenGL
  • Java 3D

7
CHAPTER 6 - CURVES
  • GOAL
  • Understand and master the theory and practice of
    curves, their types,
  • parametric formulation, vector analysis, their
    implementation by
  • CAD/CAM systems, and their use in geometric
    modeling.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Geometric modeling
  • Modeling entities
  • Curve implicit equations
  • Curve parametric equations
  • Curve properties
  • Analytic curves
  • Synthetic curves
  • Curve manipulations

8
CHAPTER 7 - SURFACES
  • GOAL
  • Understand and master the theory and practice of
    surfaces, their types,
  • parametric formulation, their implementation by
    CAD/CAD systems, and
  • their use in geometric modeling.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Surfaces and solid modeling
  • Surface entities
  • Extending curves to surfaces
  • Surface parametric equations
  • Surface properties
  • Analytic surfaces
  • Parametric surfaces
  • Surface manipulations

9
CHAPTER 8 - NURBS
  • GOAL
  • Understand and master the theory and practice of
    NURBS curves and
  • surfaces, their formulation, their implementation
    by CAD/CAM systems,
  • and the advantages of their use in geometric
    modeling.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • NURBS modeling
  • NURBS basics (knot vectors and weights)
  • NURBS curves
  • NURBS lines
  • NURBS arcs and circles
  • NURBS surfaces
  • NURBS bilinear surface
  • NURBS ruled surface

10
CHAPTER 9 - INTRODUCTION
  • GOAL
  • Understand and master the concepts of solid
    modeling, the use of
  • primitives in geometric modeling, the basics of
    Boolean operations, and
  • the representation schemes of solids.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Geometry and topology
  • Primitives
  • Primitives manipulation
  • Regularized sets
  • Set membership classification
  • Constructive solid geometry (CSG)
  • Boundary representation (B-rep)
  • Sweeps

11
CHAPTER 10 - INTRODUCTION
  • GOAL
  • Understand and master the concept of features and
    their use in geometric
  • modeling the basics of parametrics, relations,
    and constraints and the use
  • of parametrics and relations in what-if design
    questions.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Features and primitives
  • Feature entities
  • 3D sketching
  • Feature representation
  • Creating features
  • Parametrics
  • Relations and constraints
  • Feature manipulations

12
CHAPTER 11 GRAPHICS DISPLAY
  • GOAL
  • Understand and master the concept of raster
    displays, the types of display
  • monitors (including the digital flat panel
    displays), and the parameters of
  • these displays.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Impact of displays on CAD models
  • CRTs
  • Flat screen CRTs
  • Flat panel displays
  • LCDs
  • Digital flat panel displays
  • Comparing displays
  • Specifications

13
CHAPTER 12 - TRANSFORMATIONS
  • GOAL
  • Understand and master the concepts of geometric
    transformations, their
  • types, their use in geometric modeling, how they
    speed up the creation of
  • CAD models, and how CAD systems use them to
    create views and
  • engineering drawings.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Need for geometric transformations
  • Translation, rotation, mirroring, scaling, and
    reflection
  • Homogeneous transformations
  • Concatenated transformations
  • Inverse transformations
  • Projections of geometric models
  • Orthographic projections
  • Perspective projections

14
CHAPTER 13 - VISUALIZATION
  • GOAL
  • Understand and master the concepts of rendering
    and visualization and
  • their importance to geometric modeling, and
    understand the related
  • algorithms.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Need for rendering
  • Model cleanup
  • Hidden line removal
  • Hidden surface removal
  • Hidden solid removal
  • Visualization algorithms
  • Shading
  • Colors

15
CHAPTER 14 COMPUTER ANIMATION
  • GOAL
  • Understand and master the concepts of motion and
    animation and their
  • importance to geometric modeling, and understand
    the related algorithms.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Need for motion and animation
  • Computer animation
  • Frame-buffer animation
  • Real-time playback
  • Keyframe technique
  • Simulation approach
  • Animation-related problems
  • Animation of articulated bodies

16
CHAPTER 15 MASS PROPERTIES
  • GOAL
  • Understand and master geometric and mass
    properties, how to calculate
  • them, the concept of numerical integration, and
    how to use CAD systems
  • to calculate mass properties.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Importance of mass properties in CAD design
  • Calculate curve and contour lengths
  • Calculate areas
  • Calculate volumes
  • Calculate centroids
  • Calculate inertia properties
  • Use Gauss quadrature
  • Use mass properties in part design

17
CHAPTER 16 ASSEMBLY MODELING
  • GOAL
  • Understand and master assemblies, the different
    approaches to creating
  • then, assembly analysis, and how to use CAD
    systems to create assembly
  • models.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Differences between part and assembly modeling
  • Mating conditions
  • Bottom-up assembly modeling approach
  • Top-down assembly modeling approach
  • WCS and mate methods to assemble parts
  • Managing assemblies
  • Working with subassemblies
  • Assembly analysis

18
CHAPTER 17 FINITE ELEMENT METHOD
  • GOAL
  • Understand finite element modeling and analysis.
    How to calculate
  • stresses an strains, and how to use CAD systems
    to help perform
  • FEM/FEA.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Why the finite element method
  • Procedure of the finite element method
  • FEA
  • FEM
  • Preprocessors mesh generation
  • Postprocessors results display
  • Understanding the results
  • How CAD systems facilitate both FEM and FEA

19
CHAPTER 18 PRODUCT DATA EXCHANGE
  • GOAL
  • Understand data exchange standards including IGES
    and STEP, how
  • translators work, why we need preprocessors and
    postprocessors, and
  • how to test translators to ensure the correct
    data conversion.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Necessary evil of CAD/CAM data translation
  • Data exchange format
  • IGES standard
  • STEP standard
  • ACIS format
  • DXF de facto standard
  • File structure and format
  • Testing and verification

20
CHAPTER 19 COLLABORATIVE DESIGN
  • GOAL
  • Understand the difference between traditional and
    collaborative design,
  • become familiar with collaborative design
    concepts, understand its
  • requirements, and know what tools are needed to
    perform collaborative
  • design.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Synchronous and asynchronous communication
  • Distributed computing model
  • Instant messaging
  • Virtual reality
  • Collaborative design principles
  • Collaboration approaches
  • Collaboration tools
  • Collaborative design software

21
CHAPTER 20 ENGINEERING TOLERANCES
  • GOAL
  • Understand the importance and role of tolerances
    in manufacturing, the
  • different types of tolerances, part inspection
    and its relation to tolerances,
  • and how CAD systems implement and use tolerances.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Tolerance concepts limits and fits,
    accumulation, cost, and quality
  • Conventional tolerances
  • Geometric tolerances
  • Datums
  • ANSI GDT Y14.5M standards
  • Inspection gages
  • Tolerance stackup analysis
  • Tolerance synthesis

22
CHAPTER 21 PROCESS PLANNING
  • GOAL
  • Understand the interface between design and
    manufacturing and between
  • CAD and CAM, the importance of process planning,
    the basics of CAPP,
  • and the benefits of CAPP.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Manual process planning
  • Essentials of CAPP
  • Input and output of CAPP systems
  • CAPP models
  • Architecture of CAPP systems
  • CAPP approaches variant, generative, and hybrid
  • CAPP benefits
  • CAPP software

23
CHAPTER 22 PART PROGRAMMING
  • GOAL
  • Understand the basics of machine tools and their
    programming. Part
  • programming an its basics, the fundamentals of
    coding languages and
  • structure, and the use of CAD/CAM systems for
    generating and verifying
  • toolpaths.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • Importance of part programming
  • Working at the interface between CAF and CAM
  • CAM requirements of CAD data
  • Fundamentals of machine tools axes radius
    programming, and tool offsets
  • APT programming geometric and motion statements
  • Toolpath generation
  • Toolpath verification

24
CHAPTER 23 PRODUCT LIFECYCLE MANAGEMENT
  • GOAL
  • Understand PLM, why it is crucial for companies
    to implement, what a
  • PLM system offers, what PDM is and its
    relationship to PLM, and analyze
  • some PLM and PDM case studies.
  • OBJECTIVES
  • After reading this chapter, you should understand
    the following concepts
  • The current engineering and design practice
  • Types of product information
  • PLM goal
  • PLM benefits
  • PLM systems
  • PLM enabling technologies
  • PDM
  • Case studies of implementing PLM and PDM
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