HEIDENHAIN TNC 620 (340 56x-03) Cycle programming - Manual (Page 182)

182 Fixed Cycles: Contour Pocket
7.
6 R
OUGH-OUT (Cy
c
le 22, DIN/ISO:
G122, A
dv
a
nced Pr
ogr
a
mming F
eat
ur
es
Sof
tw
a
re
Option)
7.6 ROUGH-OUT (Cycle 22,
DIN/ISO: G122, Advanced
Programming Features
Software Option)
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 the
inside outward at the milling feed rate Q12.
3 The island contours (here: C/D) are cleared out with an approach
toward the pocket contour (here: A/B).
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 TNC retracts the tool to the clearance height.