HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 127)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 127
2.8 Units—Thr
eads
"Thread, direct" unit
The unit cuts a simple internal or external thread in longitudinal
direction.
Unit name: G32_MAN / Cycle: G32 (see page 307)
6: Constant infeed with remaining cutting (4290)
The control uses the same cutting depth for each infeed; the
cutting depth corresponds to the maximum infeed I. If the thread
depth is not a multiple of the cutting depth, the control uses the
depth of the remaining cut for the first infeed. With the
"distribution of remaining cuts," the control divides the last cutting
depth into four partial cuts. The first cut is half the calculated
cutting depth, the second is a quarter and the third and fourth
each are an eighth.
Access to the technology database:
 Machining operation: Thread cutting
 Affected parameters: F, S
Thread form
O
Thread location
 0: Internal thread (infeed in +X)
 1: External thread (infeed in –X)
APP Approach see page 65
XS Start diameter
ZS Starting position Z
Z2 End point of thread
F1 Thread pitch
U Thread depth (automatically for metric ISO threads)
I Maximum infeed (radius)
IC Number of cuts (only if I is not programmed and the infeed
V is 0 or 1)
KE Run-out position
 0: At the end of the threading cut
 1: At the start of the threading cut
K Run-out length