Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 14.COMPENSATION FUNCTION
- 559 -
=
33
33
33
333
cos0sin
010
sin0cos
cossin0
sincos0
001
bb
bb
aa
aaM
(3) Calculation of three points
1
P
,
2
P
,
3
P
used to calculate cutter
compensation
1
P
,
2
P
, and
3
P
are converted to
1
P
,
2
P
, and
3
P
using the
following formulas:
001
1
01
1
21
)( PPPMMMP +=
002
1
02
)( PPPMP +=
003
1
03
1
23
)( PPPMMMP +=
The cutter compensation vector is calculated using these three
points.
If the reference angle is 0
P
1
P
2
=P
2
P
1
P
3
P
3
X
Y
Z
Cutter
compensation
vector
Restrictions
- Interference check
In G41.4 or G42.4 mode, an interference check is performed using a
specified position in the workpiece coordinate system and a
compensation vector. The interference check avoidance function
cannot be used.
- Corner arc (G39)
In G41.4 or G42.4 mode, G39 cannot be specified. Specifying G39
causes alarm PS1062 to be issued.
- Manual intervention
In G41.4 or G42.4 mode, manual intervention must not be performed
on the rotation axis.

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