
B–63523EN–1/03
1. AXIS CONTROL
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The Electronic Gear Box 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 electronic gear box is hereinafter called an EGB function.
Spindle : EGB master axis serving as a tool axis
First axis : X
Second axis : Y
Third axis : C axis (EGB slave axis serving as a workpiece axis)
Fourth axis : C axis (EGB dummy axis, which cannot be used as a usual
controlled axis)
Fifth axis : V axis (EGB slave axis serving as a dressing axis)
Sixth axis : V axis (EGB dummy axis, which cannot be used as a usual
controlled axis)
CNC
C
–
–
–
–
+
+
+
++
+
EGB
K
1
K
2
EGB
V
Spindle (master axis)
First axis X (omitted)
Second axis Y (omitted)
Third axis
Slave axis
Fourth axis
Dummy axis
Follow–up
Position control
Speed/current control
Synchronization switch
Error counter
Position control
Speed/current control
Synchronization switch
Error counter
Fifth axis
Slave axis
Sixth axis
Dummy axis
Follow–up
Spindle amplifier
Motor Spindle
Detector
Tool axis
Servo
amplifier
Servo
amplifier
Motor
Motor
Detector
Detector
C–axis
V–axis
Workpiece axis
K
1
: Synchronization factor
K
2
: Synchronization factor
1.14.4
Electronic Gear Box 2
Pair (M Series)
General
Configuration examples
of controlled axes