
3. INTERPOLATION FUNCTIONS
B–63522EN/02
NC FUNCTION
56
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.
This function is enabled in AI high–precision contour control mode or AI
nano–precision contour control mode.
G05 P10000 ; (AI high–precision contour control mode ON)
:
G07.1 IPr ; Sets cylindrical interpolation mode
: (enables cylindrical interpolation).
:
G07.1 IP0 ; Clears cylindrical interpolation mode.
G05 P0 ; (AI high–precision contour control mode OFF)
IP : One rotation axis address
r : Cylinder radius of rotation axis
Specify each of G07.1 IPr; and G07.1 IP0; singly in a block.
G107 can not be used.
As shown in Fig.3.9 (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.
Rotation
axis
Workpiece
Rotation
axis
Tool
Tool center
Y–axis Y–axis
Conventional
Cylindrical interpolation based
on this function
Fig.3.9 (a) Comparison with Conventional Interpolation
3.9
CYLINDRICAL
INTERPOLATION
CUTTING POINT
COMPENSATION
(G07.1) (M series)
M series
Format
Explanation
D Comparison with
conventional cylindrical
interpolation