Finding mold removal directions using graphics hardware
Examples of finding multiple castable directions
Number
of faces -
28
Number of faces - 40
Number of great circles on Gaussian sphere - 128 Number of great circles on Gaussian sphere - 258
Number of directions checked - 6085 Number of directions checked - 17,418
Number of castable directions found - 1 Number of castable directions found - 2
Time - 2.58 seconds Time - 6.89 seconds
Number of great circles on Gaussian sphere - 128 Number of great circles on Gaussian sphere - 258
Number of directions checked - 6085 Number of directions checked - 17,418
Number of castable directions found - 1 Number of castable directions found - 2
Time - 2.58 seconds Time - 6.89 seconds
Number of Faces - 80
Number of faces - 328
Number of great circles Gaussian sphere
- 863 Number
of great circles on Gaussian sphere - 1832
Number of directions checked - 182,904 Number of directions checked - 476,646
Number of castable directions found - 34,758 Number of castable directions found - 120,299
Number of directions checked - 182,904 Number of directions checked - 476,646
Number of castable directions found - 34,758 Number of castable directions found - 120,299
Time - 1 min 18 seconds
Time - 3 min 20 seconds
Number
of Faces - 236
Number of great circles on Gaussian sphere - 1642
Number of directions checked - 382,387
Number of castable directions found - 0
Time - 2 min 26 seconds
An example of interactively detecting undercuts while changing part geometry
Number of faces - 20,086
Intended mold removal directions are shown by arrows. Direction of cylindrical bosses in the lower-
left region of the image makes the part non-castable in the intended direction.
Number of great circles on Gaussian sphere - 1642
Number of directions checked - 382,387
Number of castable directions found - 0
Time - 2 min 26 seconds
An example of interactively detecting undercuts while changing part geometry
Number of faces - 20,086
Intended mold removal directions are shown by arrows. Direction of cylindrical bosses in the lower-
left region of the image makes the part non-castable in the intended direction.
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Page updated on 05/30/2004.