HEIDENHAIN 548431-05, User Manual, Page: 315 / 722

Teach-in | Thread and undercut cycles
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HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
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Angle of infeed, thread depth, proportioning of cuts
With some thread cycles, you can indicate the angle of infeed
(thread angle). The figures show the operating sequence at an
angle of infeed of –30° and an angle of infeed of 0°.
The thread depth is programmed for all thread cycles. The control
reduces the cutting depth with each cut.
Thread run-in and thread run-out
The slide requires a run-in distance to accelerate to the
programmed feed rate before starting the actual thread, and a run-
out distance at the end of the thread to decelerate again.
If the run-in length or run-out length is too short, the thread may
not attain the expected quality. In this case, the control displays a
warning.