HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 599)

HEIDENHAIN CNC PILOT 4290 599
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7 – Thread cutting
Thread cutting – Approach and departure
Approach and departure are in 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.