December 2001 Axis Error Compensation 6 – 41
Example The following dependencies apply for axes 2 = Y and 3 = Z:
n Ballscrew pitch error in Z and Y: Z = F(Z) and Y = F(Y)
n Axis sag in Z depending on Y
n Traverse range: Z = 800 mm, Y = 500 mm
n Datum point of compensation values: Z = –200 mm, Y = –90 mm
n Desired spacing of compensation points: 7 mm
Calculations:
Input values for the spacing of the compensation points:
possible powers of 2
16
= 6.5536 mm
Number of compensation points:
Entries:
500 mm
6.5536 mm
------------------------------
77 compensation points in Y
=
800 mm
6.5536 mm
------------------------------
123 compensation points in Z
=
Y axis:
Ballscrew pitch
error in column
2 = F(), sag
error in column
3= F()
Z axis:
Ballscrew pitch
error in column
3= F()
To Next Page
Loading...
