
B--63003EN--1/02
1. AXIS CONTROL
41
For a machine tool with a long stroke, deviations in straightness between
axes may deteriorate machining accuracy. For this reason, when an axis
moves, other axes are compensated in detection units to improve
straightness. This improvement results in better machining accuracy.
When an axis (parameter Nos. 5711 to 5713) moves, the corresponding
compensation axis (parameter Nos. 5721 to 5723) is compensated.
That is, the compensation axis is compensated at the pitch error
compensation position (See 1.3.1) of the moving axis.
0 1 2 3 60 61 126 127
ab
c
d
α
β
γ
ε
Pitch error compensation points on moving axis
Machine coordinates for moving axis
a, b, c, d Compensation position numbers of the moving axis
(parameter No. 5501 to 5524)
α, β, γ, ε Compensation for compensation axis
(parameter No. 5551 to 5574)
The compensation from point a to point b is calculated from the formula:
(β-- α)/(b--a).
5711 Axis number of moving axis 1
5712 Axis number of moving axis 2
5713 Axis number of moving axis 3
[Data type] Byte
[Unitofdata] Axis number (When 0, compensation is not performed.)
[Valid data range] 1 to Number of controlled axes
Set the axis numbers of moving axes.
1.3.3
Straightness
Compensation
General
Parameter