
1.AXIS CONTROL B-63943EN-1/02
- 258 -
- Synchronization coefficient
A synchronization coefficient is internally represented using a fraction
(Kn/Kd) to eliminate an error. The formula below is used for
calculation.
α
β
T
L
K
K
=t coefficienation Synchroniz
d
n
×=
where
L : Number of teeth
T : Number of hob threads
α : Number of pulses of the position detector per rotation
about the master axis (parameter No. 7772)
β : Number of pulses of the position detector per rotation
about the slave axis (parameter No. 7773)
Kn / Kd is a value resulting from reducing the right side of the above
formula, but the result of reduction is subject to the following
restrictions:
-2147483648≦K
n
≦2147483647
1≦
K
d
≦65535
When this restriction is not satisfied, the alarm (PS1596)is issued
when G81 is specified.
Example)
O1000 ;
N0010 M19 ; Tool axis orientation
N0020 G28 G91 C0 ; Reference position return on the
workpiece axis
N0030 G81 T20 L1 ; Synchronous start on tool and
workpiece axes
(Rotation about the workpiece axis by
18° per rotation about the tool axis)
N0040 S300 M03 ; Rotation about the tool axis at 300min
-1
N0050 G01 X
F ; Movement along the X-axis (cut)
N0060 G01 Z
F ; Movement along the Z-axis
(machining)
-----------------------------; If necessary, axis commands such as C,
X, and Z commands are allowed.
N0100 G01 X
F ; Movement along the X-axis (escape)
N0110 M05 ; Stop on the tool axis
N0120 G80 ; Synchronous cancellation on tool and
workpiece axes
N0130 M30 ;