HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 292)

292
DIN programming
4.1
9
Thr
ead cy
cles
4.19 Thread cycles
Overview of threading cycles
 G31 machine simple threads, successions of threads and multi-start
threads with G24-Geo, G34-Geo or G37-Geo (FINISHED PART). G31
can also machine a threading contour defined directly after the cycle
call and concluded by G80: See "Thread cycle G31" on page 293.
 G32 cuts a simple thread in any desired direction and position: See
"Simple thread cycle G32" on page 297.
 G33 conducts a single thread cut. The direction of the single thread
cut is as desired: See "Thread single path G33" on page 299.
 G35 cuts a simple cylindrical metric ISO thread without run-out: See
"Metric ISO thread G35" on page 301.
 cuts a tapered API thread: See "Tapered API thread G352" on
page 302.
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
Machine and control must be specially prepared by the
machine tool builder for use of this cycle. Refer to your
machine manual.
Remember that position changes resulting from
handwheel superimposition are no longer effective after
the cycle end or the "last cut" function.