34
Operation at Crossover Points During Cutter Compensation
During offset, the tool moves at a position that is always shifted away from the program path by a distance equal to the amount of offset.
The figures below show the operation that takes place at a crossover point for a line and another line, a crossover point for a curve and
another curve, and a crossover point for a line and a curve.
Programmed path
Path traveled by
center of tool
Path traveled by
center of tool
Path traveled by
center of tool
From a line to a line
From a line to an arc
a
Programmed path
a
a
Crossover point
Crossover point
Crossover
point
From an arc to a line
From an arc to an arc
Path traveled
by center of tool
Path traveled by center of tool
Programmed path
a
Crossover
point
Exceptions: Inner-side passage of 1° or less
(obtuse angle of 359° or more and less than 360°)
Amount of offset
Amount of offset
Programmed path
1° or less
Inner Side
(180° a)
<
=
Programmed path
Programmed path
Path traveled by
center of tool
From a line to a line
From a line to an arc
Programmed
path
Amount of offset
Path traveled by
center of tool
Amount of
offset
From an arc to a line
From an arc to an arc
Programmed path
Amount of
offset
Amount of
offset
Path traveled by
center of tool
Crossover point
a
a
Crossover point
Path traveled by
center of tool
Programmed path
a
Crossover point
Crossover
point
a
Outer-side Obtuse Angle
(90° a < 180°)
<
=
