
PROGRAMMING
B–63014EN/02
20. AXIS CONTROL FUNCTIONS
503
S In C–axis servo delay compensation (G83), compensation is not
applied to the integer part of the gear pitch. The compensation
direction is opposite to that of the C–axis rotation.
S C–axis handle interrupt
During synchronization between the hob axis and C–axis, manual
handle interrupt can be performed for the C–axis. The C–axis is
shifted by the amount of the handle interrupt.
For details of handle interrupts, refer to the relevant manual supplied
by the machine tool builder.
S Synchronous shift by programming
During synchronization between the hob axis and C–axis, the C–axis
can be interrupted using G01. In this case, be careful not to exceed the
maximum cutting speed.
Example: Hob shifting during synchronization
G01 Y__ C__ F__ ;
When the rotation of the position coder is stopped, the position of the
one–rotation signal is shifted in the CNC as if the one–rotation signal had
been output with the position coder at the current position.
For details, refer to the relevant manual supplied by the machine tool
builder.
In both automatic and manual operation mode, retract movement can be
made over the distance specified by parameter No. 7741, along the axis
set by bit 0 (RTRx) of parameter No. 7730.
For details, refer to the relevant manual supplied by the machine tool
builder.
Set a rotation axis as the C–axis (workpiece axis). (Bit 0 (RoTx) of
parameter No. 1006 = 1)
Set parameter No.7700#5 to 0 and also set the gear ratio of the spindle
(bob axis) to the position coder in parameter No.7711.
D C–axis synchronous
shift
D Manual setting of
one–rotation signal
D Retract function
Limitations
D Setting a rotation axis
D Gear ratio of the spindle
(bob axis) and Position
coder