HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 597)

HEIDENHAIN CNC PILOT 4290 597
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6 – Recessing and contour recessing
Recessing, contour recessing – Approach and departure
Approach and departure are in rapid traverse (G0).
Recessing, contour recessing – Tool selection, oversizes
Approach and departure
„ Approach – external recessing [ANESA]
„ Approach – internal recessing [ANESI]
„ Departure – external recessing [ABESA]
„ Departure – internal recessing [ABESI]
„ Approach – external contour recessing [ANKSA]
„ Approach – internal contour recessing [ANKSI]
„ Departure – external contour recessing [ABKSA]
„ Departure – internal contour recessing [ABKSI]
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
Tool selection, oversizes
Recessing width divisor [SBD]
If a recess base machined with a contour-recessing cycle does
not contain paraxial elements but only linear elements, a
suitable tool is selected using the “recessing width divisor
SBD.”
SB <= b / SBD
(SB: width of recessing tool; b: width of machining area)
Type of oversize [KSAA]
The recessing area to be machined can be assigned oversizes.
When oversizes have been defined, a recess is first rough-
machined and then finish-machined. Inputs:
„ 16: Longitudinal and transverse oversizes differ – no single
oversizes
„ 144: Longitudinal and transverse oversizes differ – with
single oversizes
„ 32: Equidistant oversize – no single oversizes
„ 160: Equidistant oversize – with single oversizes