
PROGRAMMING14. COMPENSATION FUNCTION
B–63844EN/02
290
When a tool with a rotation axis (C–axis) is moved in the XY plane during
cutting, the normal direction control function can control the tool so that
the C–axis is always perpendicular to the tool path (Fig. 14.9 (a)).
Tool
Tool
Programmed tool path
Normal direction (in
which the tool moves)
C–axis
C–axis
Fig. 14.9 (a) Sample Movement of the tool
G code Function Explanation
G41.1 or G151
Normal direction
control left
If the workpiece is to the right of the
tool path looking toward the direc-
tion in which the tool advances,
the normal direction control left
G42.1 or G152
Normal direction
control right
(G41.1 or G151) function is speci-
fied.
After G41.1 (or G151) or G42.1 (or
G152) is specified, the normal
direction control function is en-
G40.1 or G150
Normal direction
control cancel
abled (normal direction control
mode).
When G40.1 (or G150) is speci-
fied, the normal direction control
mode is canceled.
14.9
NORMAL DIRECTION
CONTROL
(G40.1, G41.1, G42.1
OR G150, G151,
G152)
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