HEIDENHAIN CNC PILOT 640 User Manual page 263

DIN/ISO programming | Form elements of turning contour
Before G37, program a linear contour element as a
reference
Machine the thread with G31
For standard threads, the parameters P, R, A and W
are defined by the control
Use Q=12 if you wish to use individual parameters
Danger of collision!
The thread is generated to the length of the reference element.
The control does not check for collisions with the workpiece
contour (e.g. contour of the finished part). Danger of collision
during machining!
Another linear element without undercut is to be
programmed as overrun.
Example: G37
. . .
FINISHED PART
N1 G0 X0 Z0
N2 G1 X20 BR-2
N3 G1 Z-30
N4 G37 Q2
N5 G25 H7 I1.7 K7
N6 G1 X30 BR-1.5
N7 G1 Z-40
N8 G37 F1.5
N9 G25 H7 FP1.5
N10 G1 X40
N11 G1 Z-60
. . .
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
NOTICE
Metric ISO
Metric ISO fine-pitch thread
4
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