
1.AXIS CONTROL B-63943EN-1/02
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1.10 ELECTRIC GEAR BOX
1.10.1 Electric Gear Box
Overview
This function enables fabrication of high-precision gears, screws, and
other components by rotating the workpiece in synchronization with a
rotating tool or by moving the tool in synchronization with a rotating
workpiece. The rate of synchronization can be specified with a
program. The synchronization of tool and workpiece axes with this
function adopts a system in which the synchronization is directly
controlled by digital servo, so that the workpiece axis can follow up
the speed fluctuations on the tool axis with no error, thereby allowing
fabrication of high-precision cogwheels. In the subsequent
explanation, the Electronic Gear Box is called the EGB.
- Example of controlled axis configuration
Spindle : EGB master axis : Tool axis
1st axis : X axis
2nd axis : Y axis
3rd axis :C axis (EGB slave axis : Workpiece axis)
4th axis : C axis (EGB dummy axis : Cannot be used as a normal
controlled axis.)
Spindle amp. Motor
Spindle (master axis)
1st axis X (omitted)
2nd axis Y (omitted)
Tool axis
3rd axis C
slave axis
4th axis
dummy axis
EGB
-
+
+
-
K
1
: Sync coefficient
K
1
Error counter
Sync switch
Motor
Detector
Velocity/current control
Servo amp.
Position control
Workpiece axis
C axis
Separate detector
FFG
+
Follow-u
Spindle
Detector
CNC
For EGB axis configuration parameter setting examples, see the
section on "FSSB setting".