
B-63783EN-1/01 6.INTERPOLATION FUNCTION
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6.10.1 Virtual Axis Direction Compensation for Polar Coordinate
Interpolation
Overview
In polar coordinate interpolation, this function compensates a machine if
it has an error on the virtual axis, that is, the center of the rotation axis is
not on the X-axis.
Explanation
(X, C)
Virtual axis (C-axis)
Error (P) on virtual axis
Center of rotation
X-axis
C-axis
(X, C) : Point on the X-C plane (the origin of the X-C plane
being assumed the center of the rotation axis)
X : X coordinate in the X-C plane
C : Virtual C-axis coordinate on the X-C plane
P : Error on the virtual axis(set with parameter No.
6085.)axis
If, on a machine on which polar coordinate interpolation is performed on
the X-axis (linear axis) and the C-axis (rotation axis) as shown in the
figure above, there is an error on the virtual axis, this function
compensates for the error before interpolation.