
3.MANUAL OPERATION B-63783EN-1/01
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3.5.1 Control Point Compensation in Three-dimensional Handle
Feed
Overview
Control point compensation in three-dimensional handle feed permits
three-dimensional handle feed even in machine configurations such as
those described below. For an explanation of machine configuration
examples, refer to Section 10.4.11 in the Connection Manual
(Functions).
(1) The two rotation axes have different centers of rotation.
(2) Spindle center compensation is performed.
In the respective configurations, by setting the center-of-rotation
compensation vector for the two rotation axes in parameter No. 7519
and the spindle center compensation vector in parameter No. 7520,
three-dimensional handle feed can be performed in the same way as
that for conventional three-dimensional handle feed.
For example, three-dimensional handle feed is possible in a machine
configuration in which the center of rotation of the first axis is identical
to that of the second but the center of rotation of the spindle is not
identical to that of the first axis, such as that shown in the figure below.
Spindle center
Spindle center compensation vector
Parameter No. 7520
Center of rotation of axis C =
Center of rotation of axis B
X
Z
Y
C
B
Tool holder offset
Parameter No. 7548
C
B
Center of rotation of spindle
Fig. 3.5.1(a) Machine configuration in which the center of rotation of the
spindle differs from that of the first axis