
B–63833EN–1/02
9. SPINDLE SPEED FUNCTION
594
This function enables the synchronous control of two spindles. It also
enables the control of the rotation phase of a spindle, allowing
non–standard workpieces as well as rods to be held by either of the two
spindles.
In spindle synchronous control, the spindle to which an S command is
issued is called the master spindle. A spindle which ignores any S
command that is issued for it, instead rotating synchronously with the
master spindle, is called the slave spindle.
The table below shows the synchronous spindle configuration.
Master spindle Slave spindle
T series/M series First serial spindle Second serial spindle
For details of synchronous–spindle connection, see the description of
serial spindles.
The following description relates to this CNC.
D Synchronous control of spindle phase is executed when the signal for
controlling the spindle phases in synchronization is entered in spindle
synchronization control mode (after output of the signal indicating
that the synchronous control of spindle speed has been completed).
The signal indicating that the synchronous control of spindle phase is
completed is output when the difference between the error pulses of
the two spindles does not exceed the number of pulses specified in
parameter No. 4810 of the NC function.
The positions of spindle phase synchronization can be specified in
spindle parameter No. 4034 on each of tool post 1 and tool post2.
When the two spindles are subject to spindle–phase
synchronous–control (until the spindle–phase synchronous–control
completion signal, FSPPH <F044#3>, turns to “1”), they are not
synchronized with each other.
Do not specify spindle–phase synchronous control while the two
spindles are holding a workpiece. Specifying this item causes phase
synchronous control to start automatically.
D PMC signal, SYCAL <F044#4> is provided to monitor a
synchronization errors between spindles for which spindle
synchronization control or synchronous control of spindle phase is in
effect. The synchronization error between the two spindles is always
monitored. The SYCAL signal is set to 1 when the error (the absolute
value of the error pulse) specified in parameter No. 4811 of tool post
1 is exceeded, and set to 0 when not exceeded.
9.11
SPINDLE
SYNCHRONOUS
CONTROL
General
Synchronous–spindle
configuration
Supplementary
description