HEIDENHAIN iTNC 530 (60642x-04) Cycle programming User Manual
Page 197
HEIDENHAIN iTNC 530
197
7.
6 R
O
UGH-OUT (Cy
c
le 22, DIN/ISO:
G122)
Feed rate factor in %
Q401: Percentage factor by
which the TNC reduces the machining feed rate
(Q12)
as soon as the tool moves within the material
over its entire circumference during roughing. If you
use the feed rate reduction, then you can define the
feed rate for roughing so large that there are optimum
cutting conditions with the path overlap (Q2)
specified in Cycle 20. The TNC then reduces the feed
rate as per your definition at transitions and narrow
places, so the machining time should be reduced in
total. Input range 0.0001 to 100.0000
Fine-roughing strategy
Q404: Specify how the TNC
should move the tool during fine roughing when the
radius of the fine-roughing tool is larger than half the
coarse roughing tool.
Q404 = 0
Between areas that need to be fine-roughed, move
the tool along the contour at the current depth
Q404 = 1
Between areas that need to be fine-roughed,
retract the tool to set-up clearance and move to the
starting point of the next area to be roughed out