HEIDENHAIN TNC 620 (81760x-02) Cycle programming - Manual (Page 197)

FLOOR FINISHING (Cycle 23, DIN/ISO: G123, software option 19) 7.7
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TNC 620 | User's Manual Cycle Programming | 2/2015
197
7.7 FLOOR FINISHING (Cycle 23,
DIN/ISO: G123, software option 19)
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.
Please note while programming:
The TNC automatically calculates the starting point
for finishing. The starting point depends on the
available space in the pocket.
The approaching radius for pre-positioning to the final
depth is permanently defined and independent of the
plunging angle of the tool.
Danger of collision!
After executing an SL cycle you must program the
first traverse motion in the working plane with both
coordinate data, e.g.
L X+80 Y+0 R0 FMAX.
At the end of the cycle, move the tool in
the plane to an absolute position, not to an
incremental position, if you have set the parameter
ConfigDatum, CfgGeoCycle, posAfterContPocket to
ToolAxClearanceHeight.