7
7.6
ROUGHING (Cycle 22, DIN/ISO: G122)
Cycle run
Use Cycle 22 ROUGHING to define the technology data for
roughing.
Before calling Cycle 22 you need to program further cycles:
Cycle 14 CONTOUR or SEL CONTOUR
Cycle 20 CONTOUR DATA
Cycle 21 PILOT DRILLING, if necessary
Cycle run
1 The TNC positions the tool over the cutter infeed point, taking
the allowance for side into account.
2 In the first plunging depth, the tool mills the contour from inside
outward at the milling feed rate.
3 First the island contours (C and D in the figure at right) are
rough-milled until the pocket contour (A, B) is approached.
4 In the next step the TNC moves the tool to the next plunging
depth and repeats the roughing procedure until the program
depth is reached.
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.
228
Fixed Cycles: Contour Pocket | ROUGHING (Cycle 22, DIN/ISO: G122)
HEIDENHAIN | User's manual for cycle programming | 10/2017