
B–63523EN–1/03
1. AXIS CONTROL
319
Synchronization of all synchronized axes is canceled.
When a synchronization cancellation command is issued, the absolute
coordinates for the slave axis are updated according to the amount of
travel during synchronization.
For a rotation axis, the value obtained by rounding off the amount of
travel during synchronization to the nearest 360 degrees is added to the
absolute coordinates.
In a G80 block, do not specify addresses other than O or N.
(3)Helical gear compensation
For a helical gear, the workpiece axis is subjected to compensation for
movement along the Z axis (axial feed axis) according to the twisted
angle of the gear.
Helical gear compensation is performed with the following data.
Compensation angle =
Z sin (P)
p T Q
360 (In metric input)
Compensation angle =
Z Q sin (P)
p T
360 (In inch input)
where
Compensation angle: Absolute value with sign (degrees)
Z :Amount of travel along the Z axis after a G81 command is issued
(mm or inch)
P : Twisted angle of the gear with sign (degrees)
p : Ratio of the circumference of a circle to its diameter
T :Number of teeth
Q : Module (mm) or diametral pitch (inch
–1
)
Use P, T, and Q specified in the G81 block.
CAUTION
In the case with the Spindle Electron Gear Box function
(Spindle EGB ), the Spindle EGB synchronization is started
by the G81 command of the Commands Compatible for a
Hobbing Machine.
The Spindle EGB synchronization can not be started by the
G81.5 command of the Electronic Gear Box 2 Pair function.