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Adaptation of compensation data for reducing positioning errors in machine tools and robots
Adaptation of compensation data for reducing positioning errors in machine tools and robots
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机译:调整补偿数据以减少机床和机器人中的定位误差
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摘要
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.
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