FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
15. COMPENSATION FUNCTION
B–62764EN/01
304
The offset vector can be set to form a right angle to the moving direction
in the previous block, irrespective of machining inner or outer side, by
commanding the cutter compensation G code (G41, G42) in the offset
mode, independently. If this code is specified in a circular command,
correct circular motion will not be obtained.
When the direction of offset is expected to be changed by the command
of cutter compensation G code (G41, G42), refer to Subsec.15.6.3.
LinearLinear
r
A block specified by G42
G42 mode
r
C
Intersection
S
L
L
S
L
CircularLinear
A block specified by G42
Intersection
Programmed path
G42 mode
Tool center path
During offset mode, if G92 (absolute zero point programming) is
commanded,the offset vector is temporarily cancelled and thereafter
offset mode is automatically restored.
In this case, without movement of offset cancel, the tool moves directly
from the intersecting point to the commanded point where offset vector
is canceled. Also when restored to offset mode, the tool moves directly
to the intersecting point.
S
L
LL
L
S
S
N5
N6
N7
N8
G92 block
(G41)
N5 G91 G01 X300.0 Y700.0 ;
N6 X–300.0 Y600.0 ;
N7 G92 X100.0 Y200.0 ;
N8 G90 G01 X400.0 Y800.0 ;
Tool center path
Programmed path
D Cutter compensation G
code in the offset mode
D Command cancelling the
offset vector temporarily

Leave a Reply

Your email address will not be published. Required fields are marked *