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CAD-Based Tolerancing - Elements of a Comprehensive System. 

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Table of Contents

  1. CAD based Tolerancing 
  2. Manufacturing Considerations 
  3. Competing Requirements 
  4. Tolerance Analysis 
  5. Push Button Tolerance Analysis 
  6. Computer Tools for FEA 
  7. The Ideal Tolerance Analysis System 
  8. 3 Sources of Variation in Assemblies 
  9. 2-D Vector Loop 
  10. Vector Assembly Model 
  11. 2-D Kinematic Joints 
  12. 3-D Kinematic Joints 
  13. Vector Path Through a Joint 
  14. Vector Path Across a Part 
  15. 2-D Propagation of Surface Variation 
  16. 3-D Propagation of Surface Variation 
  17. Assembly Tolerance Specifications 
  18. Design Specifications 
  19. Design Specifications (CONT.) 
  20. CAD Assembly Model 
  21. TIdentify Critical Assembly Features 
  22. PIdentify Critical Assembly Features (cont) 
  23. Create Datums for each Part 
  24. Create Joints Between Mating Parts 
  25. Generate Vector Loops 
  26. Add Geometric Tolerances 
  27. Completed CATS Model 
  28. 2-D Projection Plane 
  29. Completed 3-D TI/TOL Model 
  30. Screen Shot 
  31. Non-Parametric Change 
  32. Parametric Geometry Change 
  33. TI/TOL Analyzer 
  34. Analysis Window 
  35. Analysis Results 
  36. Percent Contribution Chart 
  37. Tolerance Allocation 
  38. Tolerance Allocation Window 
  39. The CATS System 
  40. Current CATS Systems 
  41. CATS Assembly Modeling Status 
  42. CATS Tolerance Analysis Status 
  43. Concurrent Engineering 
  44. ADCATS 
  45. ADCATS Sponsors 
  46. Controlling Variation 
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Author: Ken Chase