
PROGRAMMING
B–63534EN/02
22. RISC PROCESSOR
633
The conventional cylindrical interpolation function controls the tool
center so that the tool axis always moves along a specified path on the
cylindrical surface, towards the rotation axis (cylindrical axis) of the
workpiece. On the other hand, this function controls the tool so that the
tangents to the tool and a contour figure cutting surface always pass
through the rotation center of a workpiece
As shown in Fig.22.2 (a), control is exercised along the offset axis
(Y–axis) direction that is perpendicular to the tool, tool center axis, and
workpiece rotation center axis. Therefore, contour figure on the cutting
side can be assumed to be the same anytime without depending on the
amount of the cutter compensation.
This function can be used in AI high precision contour control mode or
in AI NANO high precision contour control mode.
Workpiece
Rotation Rotation
Tool
Tool
center
Shape on the cutting side changes de-
pending on the amount of cutter com-
pensation because the tool path is
compensated by moving the rotation
axis.
Y–axis
Workpiece
Shape on the cutting side does not de-
pend on the amount of cutter com-
pensation by moving the Y axis.
The cutting side is always vertical to
the cylinder.
Cutting side
Cutting
side
Cutting
side
Cutting
side
Y–axis
Command
Position
Command
Position
Command
Position
Command Position
Rotation Rotation
Conventional cylindrical
interpolation
Cylindrical interpolation based
on this function
In the case of the amount of the
cutter compensation is large;
Fig. 22.2 (a) Comparison with Conventional Interpolation
22.2
CYLINDRICAL
INTERPOLATION
CUTTING POINT
CONTROL (G07.1)
General