HEIDENHAIN TNC 640 User Manual page 339

Cycles: Special Functions | COUPLING INTERPOLATION TURNING (cycle 291, DIN/ISO: G291, software
option 96)
You can use the following tool types for interpolation
turning:
TYPE: ROUGH, with the machining directions TO: 1, 7 , 8
TYPE: FINISH, with the machining directions TO: 1, 7 , 8
TYPE: BUTTON, with the machining directions TO: 1, 7 , 8
The following tool types cannot be used for
interpolation turning:
possible with this tool type" is displayed)
TYPE: ROUGH, with the machining directions TO:
2 to 6
TYPE: FINISH, with the machining directions TO:
2 to 6
TYPE: BUTTON, with the machining directions
TO: 2 to 6
TYPE: RECESS
TYPE: RECTURN
TYPE: THREAD
HEIDENHAIN | User's manual for cycle programming | 10/2017
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