HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 359)

HEIDENHAIN TNC 640 359
13.24 CONT
OUR-P
A
RALLEL THREAD (Cy
c
le 830)
13.24 CONTOUR-PARALLEL
THREAD (Cycle 830)
Application
This cycle enables you to run both face turning and longitudinal turning
of threads with any form.
You can process single threads or multi-threads with the cycle.
If you do not enter a thread depth in the cycle, the cycle uses a
standardized thread depth.
The cycle can be used for inside and outside machining.
Cycle run
The TNC uses the tool position as cycle starting point when a cycle is
called.
1 The TNC positions the tool in rapid traverse at set-up clearance in
front of the thread and runs an infeed motion.
2 The TNC runs a thread cut parallel to the defined thread contour.
Here the TNC synchronizes feed rate and speed so that the
defined pitch is machined.
3 The TNC retracts the tool at rapid traverse by the set-up clearance.
4 The TNC positions the tool back at rapid traverse to the beginning
of cut.
5 The TNC runs an infeed motion. The infeeds are run according to
the angle of infeed Q467.
6 The TNC repeats the process (2 to 5) until the thread depth is
completed.
7 The TNC runs the number of air cuts as defined in Q476.
8 The TNC repeats the process (2 to 7) according to the number of
traverses Q475.
9 The TNC positions the tool at rapid traverse back to the cycle
starting point.
The cycle 830 runs the overrun Q466 following the
programmed contour. Note the spatial conditions.