本帖最后由 Q_zero 于 2012-3-10 17:58 编辑
PTC的 螺旋插补只提供给THREAD MILL
Helical Interpolation
Helical interpolation is provided for Thread Milling. Output format uses CIRCLE with differing Z coordinates at the start and end point. Difference in Z values is based on the thread pitch and the fraction of the distance travelled around the helix. For the CIRCLE statement, Z dimension used is the same as the initial point. Sample output is shown below:
...
FEDRAT / 12.000000, IPM
GOTO / 8.198000, 0.000000, -0.625000
FEDRAT / 8.000000, IPM
CIRCLE / 8.000000, 0.000000, -0.625000, $ $$ 1ST ORBIT
0.000000, 0.000000, 1.000000, 0.198000
GOTO / 8.198000, 0.000000, -0.583333
CIRCLE / 8.000000, 0.000000, -0.583333, $ $$ 2ND ORBIT
0.000000, 0.000000, 1.000000, 0.198000
GOTO / 8.198000, 0.000000, -0.541667
FEDRAT / 12.000000, IPM
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