
B–63522EN/02
21. AXES CONTROL
NC FUNCTION
299
This function is a function for rotating a workpiece in sync with a rotating
tool, or to move a tool in sync with a rotating workpiece. With this
function, the high–precision machining of gears, threads, and the like can
be implemented. A desired synchronization ratio can be programmed. Up
to two sets of axes can be synchronized. A gear grinding machine can be
controlled, for instance, by using one axis for rotating the workpiece in
sync with the tool and another axis for performing dressing in sync with
the tool.
The specification method differs depending on the configuration of the
machine. For details, refer to the manual supplied by the machine tool
builder.
Fifth axis
Slave axis
Fourth axis
Dummy axis
Follow–up
Third axis
Slave axis
First axis X (omitted)
Second axis Y (omitted)
+
–
CNC
Spindle amplifier
Motor
Spindle
Spindle (master axis)
Fourth axis
Dummy axis
Follow–up
EGB
C
–
+
+
–
+
K
1
: Synchronization factor
EGB
V
=
+
K
1
Error counter
Synchronization switch
Motor
Detector
Speed/current control
Servo amplifier
Position control
Workpiece axis
C–axis
K
2
Dressing axis
–
+
Error counter
Synchronization switch
Speed/current control
Position control
Detector
K
2
: Synchronization factor
Motor
Detector
Servo amplifier
C–axis
Tool axis
21.21
TWO ELECTRONIC
GEAR BOX SETS (M
series)
M series