HEIDENHAIN CNC PILOT 640 User Manual page 353

DIN/ISO programming | Thread cycles
R: Rem. cut depth (default: 0)
0: The last cut is divided into four partial cuts: 1/2, 1/4, 1/8
and 1/8
1: Without distribution of remaining cuts
E: Variable gr. (default: 0)
Increases/decreases the pitch per revolution by E. (no effect at
present)
Q: Number no-load.
D: No.gears
J: Thread orientation – reference direction
0: Longitudinal
1: Transverse
The cycle calculates the thread from the Final point of the
thread, Thread depth and the tool position.
First infeed = Remainder of the division of thread depth/cutting
depth.
Transverse thread: Use G31 with contour definition for cutting
transverse threads.
NC stop – the control retracts the tool from the
thread groove and then stops all tool movements
Lift-off distance in the threadLiftOff machine
parameter (no. 601804)
Feed rate override is not effective
Example: G32
. . .
N1 T4 G97 S800 M3
N2 G0 X16 Z4
N3 G32 X16 Z-29 F1.5
. . .
Cycle run:
1 Calculates the number of cutting passes
2 Executes a thread cut
3 Returns at rapid traverse and approaches for next pass
4 Repeats 2 to 3 until the complete thread has been cut
5 Executes air cuts
6 Returns to starting point
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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