
B-63943EN-1/02 1.AXIS CONTROL
- 251 -
NOTE
The sampling cycle in which feedback pulses are
read from the master axis, the synchronization
pulses of the slave axis is calculated based on the
synchronization coefficient K, and the pulses are
issued for the position control for the slave axis is 1
ms.
Format
G81 T_ ( L_ ) ( Q_ P_ ) ; Starts synchronization.
G80 ; Ends synchronization.
T : Number of teeth (Specifiable range: 1 to 1000)
L : Number of hob threads (Specifiable range: -21 to
+21)
The sign of L determines the direction of rotation
for the workpiece axis.
When L is positive, the direction of rotation for the
workpiece axis is positive (+ direction).
When L is negative, the direction of rotation for the
workpiece axis is negative (- direction).
If L is not specified, the number of hob threads is
assumed 1.
Q : Module or diametral pitch
Specify a module in the case of metric input.
(Unit: 0.00001mm, Specifiable range: 0.1 to
25.0mm)
Specify a diametral pitch in the case of inch input.
(Unit: 0.00001inch
-1
, Specifiable range: 0.1 to 254.0
inch
-1
)
P : Gear helix angle
(Unit: 0.00001deg, Specifiable range: -90.0 to
90.0deg)
* When specifying Q and P, the user can use a
decimal point.
Explanation
- Master axis, slave axis, and dummy axis
The synchronization reference axis is called the master axis, while the
axis along which movement is performed in synchronization with the
master axis is called the slave axis. For example, if the workpiece
moves in synchronization with the rotating tool as in a hobbing
machine, the tool axis is the master axis and the workpiece axis is the
slave axis.
Which axes to become the master and slave axes depends on the
configuration of the machine. For details, refer to the manual issued
by the machine tool builder.