
1.AXIS CONTROL B-63783EN-1/01
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(Example 2)
If the spindle-to-detector gear ratio is changed to 2/3 in the above example (three
spindle rotations for two detector rotations)
In this case, the number of pulses per spindle rotation is:
3
160000
=
3
2
80000 ×
There is a remainder. In this case, change the setting of parameter No. 5997 so
that the ratio between parameter No. 5996 and No. 5997 becomes the desired value.
1080000
160000
=
3360000
160000
=
360000
3
160000
=
No.5997
No.5996
×
Therefore, it is only necessary to set No. 5996 = 160000 and No. 5997 = 1080000.
With this method, stress is placed on the correct ratio between the two parameters.
So the value of the ratio can be reduced, and the resulting numerator and
denominator can be set as the respective parameters. In this case, it is possible to
set No. 5996 = 16 and No. 5997 = 108.
If the ratio between the number of pulses for the master axis and that for the slave
axis is adjusted, but the actual number of pulses does not match the corresponding
parameter (for example, if the ratio is modified because the number of pulses is
indivisible because of a gear ratio between the master and slave axes, as in example
2), it is impossible to specify the following G81.5 commands.
G81.5 T_ C_:
If a number of rotations is specified for the master axis, and an amount of travel is
specified for the slave axis
G81.5 P_ C0 L_:
If a number of pulses is specified for the master axis, and a number of rotations is
specified for the slave axis
G81.5 X_ C0 L_:
If an amount of travel is specified for the master axis, and a number of rotations is
specified for the slave axis
5994 Axial-feed axis number in helical compensation
[Input type] Parameter input
[Data type] Integer
[Valid data range] 0 - Max axes
Specify the ordinal number of an axial-feed axis in helical compensation.
NOTE
When this parameter is set to 0, the Z-axis is set as the axial-feed
axis.
When there are two or more parallel Z-axes, use this parameter
to specify which Z-axis is to be used as the axial-feed axis.