Units - Threads; Overview Of Thread Units; Handwheel Superimposition - HEIDENHAIN CNC PILOT 640 User Manual

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2.8 Units – Threads

Overview of thread units

Overview of thread units:
G32 Thread, direct cuts a simple internal or external thread in
longitudinal direction.
G31 Thread, ICP cuts a single or multi-start internal or external
thread in longitudinal or transverse direction. The contour on
which the thread is cut is defined with ICP
G352 API thread cuts a tapered single or multi-start API thread.
The depth of thread decreases at the overrun at the end of
thread.
G32 Tapered thread cuts a single or multi-start tapered internal
or external thread

Handwheel superimposition

If your machine features handwheel superimposition, you can
overlap axis movements during thread cutting in a limited area:
X direction: Maximum programmed thread depth depending on
the current cutting depth
Z direction: +/- a fourth of the thread pitch
Refer to your machine manual.
This function must be set up by your machine
manufacturer.
Remember that position changes resulting from
handwheel superimposition are no longer effective after
the cycle end or the Last cut function.
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smart.Turn units | Units – Threads
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017