Spindle cone run-out

Geometrical parameters are verified by a calibration laboratory and attested with a calibration protocol.

Parameters of spindle cone run-out and alignment of Z travel with the spindle axis are checked. Both parameters are checked on a control bar inserted into the spindle. Both parameters play key roles in the accuracy and repeatability of the tool setting process. The setting process repeatability is in the case of tool setting more important than the instrument accuracy expressed for example by a position error in the axes.