HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 378)

378 DIN programming
4.29 Other G codes
Spindle synchronization G720
G720 controls the workpiece transfer from the master to the slave
spindle and synchronizes functions such as polygonal turning jobs.
The function stays active until you deactivate G720 with the setting
H0.
If you would like to synchronize more than two spindles you can
program G720 several times in succession.
Program the speed of the master spindle with Gx97 S.. and define the
speed ratio between the master spindle and the slave spindle with Q,
F. If you enter a negative value for Q or F, the direction of rotation of
the slave spindle will be reversed.
Remember that: Q * master speed = F * slave speed
Example: G720
Machine and control must be specially prepared by the
machine tool builder for use of this cycle. Refer to your
machine manual.
Parameters
S Number of the master spindle
H Number of the slave spindle—no input or H=0: Switches off
the spindle synchronization
C Offset angle [°]
Q Master spindle speed factor
Range: -100 <= Q <= 100
F Slave spindle speed factor
Range: –100 <= F <= 100
Y Type of cycle
Your machine manual provides more detailed information
about machine-dependent functions.
. . .
N.. G397 S1500 M3 Speed of direction of rotation of master spindle
N.. G720 C180 S0 H1 Q2 F-1 Synchronization of master spindle and slave
spindle. The slave spindle precedes the master
spindle by 180°. Slave spindle: Direction of rotation
M4; rotational speed 750
N.. G1 X.. Z..
. . .