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Transform/rotate NCI fails on 5 axis toolpaths


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Hello,

I would like to use 5 axis port instead of flowline with our 4-axis horizontal machining center as it seems to perform better in many situations. However all 5-axis toolpaths fail to rotate properly. I use rotate transformation a lot due to fixturing. Other toolpaths rotate properly without any problem. I program in COR and use tool planes extensively. Example attached, which I cannot get the transform op to post properly; all ops use the same tool plane and the same rotation angle, but when transitioning from 3 axis flowline (that posts properly) to 5 axis path, the rotation angle changes from 90 to 180.

Flowline begin:

T6 M106
G0 G90 B90
G0 G90 X3.921 Y-55.58 S3500 M3
G43 H6 Z44. T2
Z-1.
G1 Z-6. F25.
X4.65 Y-55.555 F50.
X5.424 Y-55.476
X6.241 Y-55.331

(code omitted)

5-axis begins, invalid rotation:

X3.921 Y-55.58
G0 Z23.378
Z68.378
( 5AX PORT )
G0 G91 G28 Z0.
G0 G90 B270
G0 X3.921 Y-53.58
G43 H6 Z92.

What is causing this behavior?

5AX_NCI_ROT_TEST.mcam

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