More efficient use of metalworking machines in manufacturing entails timely assessment of their technical state. Research shows that ongoing diagnostics of the state of machine-tool drives may be based on an algorithm with the following steps (Fig. 1). 1. Derivation of calculated spectra of the part's surface irregularities by means of a multifactorial dynamic model of the metalworking machine, whose input parameters are the manufacturing precision and the precision of drive assembly [1].
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