HEIDENHAIN TNC 410 ISO Programming - Manual (Page 218)

192 8 Programming: Cycles
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g U U U U 2nd set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
U U U U Decrement Q212 (incremental value): Value by which
the TNC decreases the plunging depth Q202 after
each infeed.
U U U U No. of breaks before retracting Q213: Number of
chip breaks after which the TNC is to withdraw the
tool from the hole for chip release. For chip breaking,
the TNC retracts the tool each time by the value Q256
(with TNC 410: by 0.2 mm).
U U U U Minimum plunging depth Q205 (incremental value): If
you have entered a decrement, the TNC limits the
plunging depth to the value entered with Q205.
U U U U Dwell time at depth Q211: Time in seconds that the
tool remains at the hole bottom.
U U U U Retraction feed rate Q208: Traversing speed of the
tool in mm/min when retracting from the hole. If you
enter Q208 = 0, the TNC retracts the tool at the feed
rate in Q206.
Not available with TNC 410:
U U U U Retraction rate for chip breaking Q256
(incremental value): Value by which the TNC retracts
the tool during chip breaking.