
6.NTERPOLATION FUNCTION B-63323EN-1/03
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6.12 CYLINDRICAL INTERPOLATION CUTTING POINT
CONTROL
Overview
The conventional cylindrical interpolation controls the tool center in
such a manner that the axis of the tool moving along the path
programmed on the curved surface of a cylinder is always directed to
the rotation axis of the workpiece (central axis of the cylinder). The
cylindrical interpolation cutting point control function, however,
controls the tool in such a manner that the line perpendicular to the
cutting surface of an irregular figure at the cutting point passes through
the center of rotation of the workpiece.
As shown in Fig. 6.12 (a), the function controls the tool in the direction
of the offset axis (Y-axis), which is perpendicular to the central axis of
the tool and the central axis of rotation of the workpiece.
Fig. 6.12 (a) Comparison with Conventional Interpolation
Workpiece
Center of rotation
Tool
Tool center
Y-axis
Y-axis
Conventional cylindrical interpolation
Cylindrical interpolation by this function
Center of rotation Center of rotation