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1、- 1 - A. ? ? ? ? CATIA V4 ? ? ? ? ? 1 ? ? ?n?0?1?n? ? ? ? ? ? ? Nurbs ? Nurbs ? CATIA V5 ?Nurbs ? Nurbs ? CATIA V4 ?Nurbs ? ? Nurbs ? ?Nurbs ?w? ?Nurbs ? ?Nurbs ? ?Nurbs ? ? Nurbs ? ? ?Nurbs ? Nurbs ? 2? 4 - 2 - ? 2 C? ?Nurbs ? ?1?w? ?1?w?1?w? ? ? ? CATIA V4 ? ? ? ? ?u?v?n?0?1? n? ? ? ? ? ? ? Nurbs
2、? Nurbs ? CATIA V5 ?Nurbs ? ? Nurbs ? CATIA V4 ?Nurbs ? ? Nurbs ? ?Nurbs ?w? ?Nurbs ? ?Nurbs ? ?Nurbs ? ? Nurbs ? ? ?u?v?Nurbs ? Nurbs ? 2? ? 4 ? 2 C? ?Nurbs ? ? Nurbs ?CATIA V5 ? ?CATIA V5?Nurbs? ?FSS?FreeStyle Shaper?Nupbs?Non Uniform Polynomial Base Spline?B?Nupbs?Nurbs? ?1? ?FSS? CATIA V4 ? - 3
3、- ? ?u?v? 1 ? ? ?CATIA V5 ? Nurbs ? 2 C? ? Nupbs ? ?CATIA V5 ?Nurbs ? ?Geometric Information? CATIA V4 ? Nurbs ? ? ? ?2 Nupbs? ? ?Nurbs?CATIA V4?CATIA V5? ?Nurbs? ?w?1? ?Nurbs? ?n?n0?n1?3? ?0 0 0 1 1 1? ? Nurbs?CATIA V5?CATIA V4? Nurbs? ? ? ? ? ? ?Nurbs? B. ?CATIA V4 ? CATIA V5 ? CATIA V4 ? CATIA V5
4、 ? CATIA V4 ?u?v? CATIA V4 ? ?CATIA V5 ? - 4 - Nurbs ?CATIA V4 ?u?v? ?CATIA V4? ?CATIA V5? CATIA V4 ? CATIA V5 ? ?CATIA V5?5?12?P2? Tools?Options?Shape?Freestyle?P1?12? ?CATIA V4?16?CATIA V4?CATIA V5? ?CATIA V5?CATIA V4?CATIA V5? ?12?CATIA V4? ? ? 3 ? C. ?CATIA V4 ? ? 1 CATIA V4 ? ?0.001 CATIA V5 ?0
5、? ? ? 2 ? 2 ? ?2? ?2? ? ? ? ?Connect checker? ? ?Curve connect checker?Disassemble? - 5 - ? 2 ? 2 ? ? ? 4 ? 1 ? ? 2 CATIA V4 ? ?0.001 CATIA V5 ?-1? ? ? 2 ? 2 ? 1 ? - 6 - ? ? 5 ? 2 ? ? 3 CATIA V4 ? ?0.1 CATIA V5 ?0? ? ? 2 ? 2 ? ? 0.05mm?Connect checker?Disassemble? ?Geometric Information? ? ?Apply Dr
6、ess Up?Control Points? ? 2 ? 2 ? - 7 - ? ? 2 ? ? 6 ? 3 ? ? 4 CATIA V4 ? ?0.1 CATIA V5 ?0.001? ? ? 2 ? 2 ? ?0.05mm? ?0.05mm?Connect checker?Disassemble? ?Geometric Information? ? ?Apply Dress Up?Control Points? ? - 8 - ? 2 ? 2 ? ? 2 ? 2 ? ? 7 ? 4 ? D. ?CATIA V4 ?*SKI?*CCV? ? 1?=0.0mm ?*SKI? 1 C?2? ?Maximum deformation?Intersection Projection tolerance? ? - 9 - ? 0 C? 1 C? ? 2 C? 0 C? ? 1 C? 2 C? ? 8 ? 1 ? ? 2?=0.05mm ?0.05mm?*SKI? 0 C?2? ?Maximum deformation?Intersection Projection tolerance? - 10 - ? ? 0 C? 0 C? ? ? 9 ? 2 ?