HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 298)

298
DIN programming
4.1
9
Thr
ead cy
cles
The cycle calculates the thread from the thread end point, 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.
Example: G32
. . .
N1 T4 G97 S80 0 M3
N2 G0 X16 Z4
N3 G32 X16 Z-29 F1.5 [thread]
. . .
Parameters
C Starting angle (thread start is defined with respect to
rotationally nonsymmetrical contour elements)—(default: 0)
A Approach angle (angle of infeed) (default: 30°)
R Remainder cuts (default: 0)
 0: The last cut is divided into four partial cuts: 1/2, 1/4, 1/8
and 1/8.
 1: W/o remaining cutting (without distribution of remaining
cuts)
E Variable pitch (no effect at present)
Q Number of no-load (air) cuts after the last cut (for reducing the
cutting pressure in the thread base)—(default: 0)
D Number of thread turns for multi-start thread
J Reference direction:
 No input: The reference direction is determined from the
first contour element.
 J=0: Longitudinal thread
 J=1: Transverse thread
 Cycle stop—the Control retracts the tool from the thread
groove and then stops all tool movements. (Lift-off
distance: OEM configuration parameter:
cfgGlobalProperties-threadliftoff)
 Feed rate override is not effective.
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.