HEIDENHAIN iTNC 530 HSCI - Page 685

July 2013 6.4 Axis-error compensation 685
Reduced error model using a position error of a rotary axis (e.g. C axis) –
Recommendation for transformation chain:
The position errors calculated and averaged from several axis positions are
entered here.
The position error C0C can be corrected in machine parameter MP960.
Inverse transformation is necessary to be able to compensate one specific
axis (if information about all axes is not available, for example). Describing this
axis therefore restores the ideal kinematics model.
Reduced error model using a component error (with integrated position
errors) of a linear axis (e.g. X axis) – Recommendation for transformation
chain:
The error ECC must be corrected conventionally in the COM file (columns 1 - 18).
The position errors A0C and B0C that are relative to the home position of the
C axis are integrated in the compensation values of the COM file (component
errors). These values must be re-transformed to be able to return to the ideal
model when the axis is in home position.
NR DOC KEY AXIS COORD COMPTAB
...
X0C Trans X xxx
Y0C Trans Y xxx
EAC Trans A xxx
EBC Trans B xxx
MachAxis C
-EBC Trans B -xxx
-EAC Trans A -xxx
...
[END]
NR DOC KEY AXIS COORD COMPTAB
...
X0C and EXC Trans X A..C1
Y0C and EYC Trans Y A..C2
EZC Trans Z A..C3
EAC Trans A A..C4
EBC Trans B A..C5
MachAxis C
-EBC where C=0 Trans B -xxx
-EAC where C=0 Trans A -xxx
-EZC where C=0 Trans Z -xxx
-Y0C and -EYC
where C=0
Trans Y -xxx
-X0C and -EXC
where C=0
Trans X -xxx
...
[END]