HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 203)

FLOOR FINISHING (Cycle 23, DIN/ISO: G123) 7.7
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TNC 640 | User's Manual Cycle Programming | 1/2015
203
7.7 FLOOR FINISHING (Cycle 23,
DIN/ISO: G123)
Cycle run
With Cycle 23 FLOOR FINISHING, you can clear the finishing
allowance for floor that is programmed in Cycle 20. The tool
approaches the machining plane smoothly (on a vertically tangential
arc) if there is sufficient room. If there is not enough room, the TNC
moves the tool to depth vertically. The tool then clears the finishing
allowance remaining from rough-out.
Before calling Cycle 23 you need to program further cycles:
Cycle 14 CONTOUR GEOMETRY or SEL CONTOUR
Cycle 20 CONTOUR DATA
Cycle 21 PILOT DRILLING, if necessary
Cycle 22 ROUGHING, if necessary
Cycle run
1 The TNC positions the tool to the clearance height at rapid
traverse FMAX.
2 The tool then moves in the tool axis at the feed rate Q11.
3 The tool approaches the machining plane smoothly (on a
vertically tangential arc) if there is sufficient room. If there is not
enough room, the TNC moves the tool to depth vertically.
4 The tool clears the finishing allowance remaining from rough-
out.
5 Finally, the tool retracts in the tool axis to the clearance
height or to the position last programmed before the cycle.
This depends on the parameter ConfigDatum, CfgGeoCycle,
posAfterContPocket.