B–63682EN/01
15. ACCURACY COMPENSATION
FUNCTION
NC FUNCTION
109
ε1
P1 P4
Y–axis
P3P2
Locus of
portion B
X–axis
Locus of point A
P1, P2, P3, P4 : Compensation points for the movement axis
ε1, ε2, ε3, ε4 : Compensation amounts for the compensation points
along the compensation axis
When a movement from P1 to P4 along only the X–axis (the move-
ment axis) is specified, straightness compensation is applied to the
Y–axis (the compensation axis) by corresponding compensation
amounts (1 to (4 as portion B moves to P1 to P2 to P3 to P4. This
compensation operation for the Y–axis makes the locus of point A on
the Y–axis free from the influence of the X–axis slope even when the
locus of portion B that connects the X–axis and Y–axis is influenced
by the X–axis slope.
A
B
ε1
ε2
ε3
ε4
ε2
ε3
ε4
Fig. 15.3 (b)
NOTE
1 Straightness compensation is enabled once reference
position return has been performed along the movement
and compensation axes.
2 When the optional straightness compensation function is
used, the optional storage pitch error compensation
function is required.
3 Straightness compensation data is added to the storage
pitch error compensation data when output.
4 In straightness compensation, the movement axis itself
cannot be set as the compensation axis. To apply such a
form of compensation, use slope compensation.