Abstract
A method for the measurement of rotational errors of coordinate measuring machines (CMMs) and machine tools is presented. The key instrument in the proposed procedure is an interference sensor of angular microdeflection which makes it possible to simultaneously determine two rotational errors of the CMM ram. The main advantage of the presented method is that a low weight, small plane mirror has to be fixed to the ram, while it is shown in the article that every additional mass fixed to the ram may affect the rotational errors of the CMM. To test the performance of the presented method, two rotational errors (yrx and yrz) of two exemplary CMMs were measured. The results obtained are compared with values measured using a standard laser interferometer for angular measurements.
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