
20.AXIS CONTROL FUNCTIONS PROGRAMMING B-63944EN/02
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NOTE
If the V-axis (linear axis) is synchronized with the
spindle as in dressing, the V-axis travel range is
determined by the rotation of the spindle. To
perform dressing with the tool moving back and
forth along the V-axis in a certain range, therefore,
the PMC must perform an operation in which the
tool is stopped temporarily and is reversed when it
reaches a certain position on the V-axis.
In the above example, limit switches are provided to
determine the range of travel along the V-axis and
the PMC performs control so that the whetstone
rotates until the tool reaches the position of each
limit switch on the V-axis.
By using the position switch function instead of limit
switches, dressing can be performed as in the
following example, without the need to mount limit
switches to the machine. By rewriting the
operating ranges of the position switches
(parameters Nos. 6930 to 6945 and Nos. 6950 to
6965) using the G10 programming Parameter input,
the range of travel along the V-axis can be specified
using a program.