
B-63943EN-1/02 1.AXIS CONTROL
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a
bc
d
- Straightness compensation
In straightness compensation, similarly to gradient compensation, four
typical pitch error compensation points (a, b, c, and d) are selected
from pitch error compensation points and specified as straightness
compensation points, and compensation amounts are set up only for
these four points. For pitch error compensation points between
straightness compensation points, the NC calculates and outputs
amounts that match straightness compensation.
Straightness compensation largely differs from gradient compensation
in that the moving axis is not a compensation axis; gradient
compensation is applied directly to the moving axis. This relationship
is specified by a parameter (for example, to apply compensation to the
Y-axis as movement occurs along the X-axis).
Straightness compensation example
Y-axis
Path of the B section
Path of point A
B
1
2
3
ε4
1
2
3
ε4
Exam
le: X-axis = movin
axis, and Y-axis = com
ensation axis
a
b
c
d: Movin
axis com
ensation
oints
1,
2,
3,
4 : Compensation axis compensation amount for each
compensation point
a
b
c
d
X-axis