VORRICHTUNG ZUR FEHLERKOMPENSATION.

摘要

Measured values for positioning a working spindle axis are obtained by means of a sensor (5) which moves over a graduated scale (4). The temp.-dependent displacement of an identical sensor (5a) is detected on the same scale and its direction and magnitude are processed with the measured values. The additional sensor is located at the end of the scale adjacent to the working spindle (7) and connected to the spindle housing (8) by a thrust rod (9) of material with a low expansion coefft. The thrust rod material may be Invar, Vacodil etc. and the two sensors are connected to an electronic counter or a numerical control unit.