HEIDENHAIN iTNC 530 HSCI - Nonlinear Axis Error Compensation

652 HEIDENHAIN Technical Manual iTNC 530 HSCI
6.4.3 Nonlinear axis error compensation
Errors in machine geometry (e.g. an error in one axis caused by the sagging of
another axis) or external influences (e.g. temperature) can cause nonlinear axis
errors. These graphics show typical nonlinear axis errors:
The best way to measure nonlinear axis error is with a comparator measuring
system such as the HEIDENHAIN VM 101.
Nonlinear axis error compensation is also effective for an open loop. In this
case the compensation value is considered when the control loop is closed.
Note
The iTNC can compensate screw-pitch error and axis sag simultaneously.