
12. Tool Compensation Functions
12.4 Tool Radius Compensation
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(b) When avoidance vectors cannot be created
(i) Even when, as in the
figure, the conditions for
creating the avoidance
vectors are met, it may
still be impossible to
create these vectors or
the interference vectors
may interfere with N3.
Program error (P153) will
occur at the N1 end point
when the vector
intersecting angle is more
than 90
°
.
Alarm stop
N1
N2
N3
N4
Alarm stop
Angle of
intersection
N1
N2
N3
N4
(c) When the program advance direction and the advance direction after compensation are
reversed
In the following case, interference is still regarded as occurring even when there is
actually no interference.
When grooves which are narrower than the tool radius or which have parallel or widening
walls are programmed
Tool center
path
Program path
Stop