FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
15. COMPENSATION FUNCTION
233
If the tool nose radius compensation value is sufficiently small, the two
circular Tool nose radius center paths made after compensation intersect
at a position (P). Intersection P may not occur if an excessively large
value is specified for tool nose radius compensation. When this is
predicted, P/S alarm (No.33) occurs at the end of the previous block and
the tool is stopped. In the example shown below, Tool nose radius center
paths along arcs A and B intersect at P when a sufficiently small value is
specified for tool nose radius compensation. If an excessively large value
is specified, this intersection does not occur.
When the tool nose radius
compensation value is large
Arc B
P
When the tool nose radius
compensation value is small
Alarm(No.033)occurs and the tod
stops
Programmed path
Center of the arc B Center of the arc A
Arc A
r
r
If the center of the arc is identical with the start position or end point, P/S
alarm (No. 038) is displayed, and the tool will stop at the end position of
the preceding block.
N5 N6
N7
r
Alarm(No.038)is displayed and the tool
stops
(G41)
N5 G01 W100.0 ;
N6 G02 W100.0 I0 J0 ;
N7 G03 U–100.0 I–100.0 ;
Tool nose radius
center path
Programmed path
S There is no inner
intersection
S The center of the arc is
identical with the start
position or the end
position

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