Adaptation of compensation data for reducing positioning...

Data processing: measuring – calibrating – or testing – Calibration or correction system – For mechanical system

Reexamination Certificate

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C702S084000, C702S085000, C700S057000

Reexamination Certificate

active

06892153

ABSTRACT:
In a method for compensating static positioning errors, in particular position and orientation errors, in guiding a movement of a movable machine element of an industrial processing machine, positioning errors are initially measured at startup of the machine and stored in a compensation table in a numerical controller (CNC). These values are used to generate reference values for compensating the errors. Deviations between the measured points in the table are interpolated. The actual position is measured during machining by using an additional measurement system and compared with the nominal position. Typically, the points of the measurement are different from the points in the compensation table. The compensation values can be improved continuously in two ways: on one hand, by extending the compensation table by adding the measured points and, on the other hand, by adapting the points of the compensation table adjacent to the corresponding measurement point.

REFERENCES:
patent: 4251761 (1981-02-01), Inoue
patent: 5227978 (1993-07-01), Kato
patent: 5726896 (1998-03-01), Jia et al.

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