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

PROGRAMMING
15. COMPENSATION FUNCTION
B–62754EN/01
232
If the end of a line leading to an arc is programmed as the end of the arc
by mistake as illustrated below, the system assumes that tool nose radius
compensation has been executed with respect to an imaginary circle that
has the same center as the arc and passes the specified end position. Based
on this assumption, the system creates a vector and carries out
compensation. The resulting tool nose radius center path is different from
that created by applying tool nose radius compensation to the
programmed path in which the line leading to the arc is considered
straight.
rr
Center of the arc
Imaginary circle
Leading of the arc
End the arc
L
L
L
r
C
S
Programmed path
Tool nose radius
center path
Work-
piece
The same description applies to tool movement between two circular
paths.
D When it is exceptional
S End position for the arc
is not on the arc

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