HEIDENHAIN SW 688945-03 - Manual (Page 534)

534 Organization mode of operation
8.2 P
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Thread cutting
Thread cutting – Approach and departure
Approach and departure are at rapid traverse (G0).
Thread cutting – Machining
Approach and departure
 Approach – external thread [ANGA]
 Approach – internal thread [ANGI]
 Departure – external thread [ABGA]
 Departure – internal thread [ABGI]
Approach/departure strategy:
 1: Move simultaneously in X and Z directions
 2: First X, then Z direction
 3: First Z, then X direction
 6: Coupled motion; X precedes Z direction
 7: Coupled motion; Z precedes X direction
Machining
Thread starting length [GAL]
Starting length before threading cut.
Thread run-out length [GUL]
Overrun length after threading cut.
GAL/GUL are automatically transferred to the thread
attributes "starting length B/overrun length P" if they have
not been entered as attributes.