HEIDENHAIN TNC 410 ISO Programming - Manual (Page 227)

HEIDENHAIN TNC 410, TNC 426, TNC 430 201
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g U U U U Set-up clearance Q200 (incremental value): Distance
between tool tip (at starting position) and workpiece
surface. Standard value: approx. 4 times the thread
pitch
U U U U Total hole depth Q201 (thread length, incremental
value): Distance between workpiece surface and end
of thread.
U U U U Feed rate F Q206: Traversing speed of the tool during
tapping.
U U U U Dwell time at bottom Q211: Enter a value between 0
and 0.5 seconds to avoid wedging of the tool during
retraction.
U U U U Workpiece surface coordinate Q203 (absolute
value): Coordinate of the workpiece surface.
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.
The feed rate is calculated as follows: F = S x p
Retracting after a program interruption
If you interrupt program run during tapping with the machine stop
button, the TNC will display a soft key with which you can retract the
tool.
Example: NC block
N25 G206 Q200=2 Q201=-20 Q206=150
Q211=0.25 Q203=+25 Q204=50 *
F Feed rate (mm/min)
S: Spindle speed (rpm)
p: Thread pitch (mm)