HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 379)

CONTOUR-PARALLEL THREAD
(Cycle 830, DIN/ISO: G830)
13.30
13
TNC 640 | User's Manual Cycle Programming | 5/2013
379
13.30 CONTOUR-PARALLEL THREAD
(Cycle 830, DIN/ISO: G830)
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.
The cycle 830 runs the overrun
Q466 following the
programmed contour. Note the spatial conditions.
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 back at rapid traverse to the cycle
starting point.