METHODS FOR EVALUATING THE ACCURACY OF THE TREADMILL PROFILE OF PLANETARY MECHANISMS WITH ROLLING ELEMENTS

Abstract

The article deals with the issues of evaluating the accuracy of manufacturing and control of the profile of large multi-period tracks of planetary reducing mechanisms with bodies of quality. Methods for estimating the accuracy of the multi-period track profile using coordinate measurement technology on a coordinate measuring machine have been developed. The methods consist in measuring the manufactured real profile of a multi-period track with a certain linear step, obtaining an array of coordinates of profile points as a result of measurements and calculating errors of the track profile in accordance with the assigned accuracy indicators characterizing the angular position of the coordinates of the points and the linear deviation of the track profile. Computer programs have been developed for processing experimental measurement results and calculating errors that determine the accuracy of the multi-period track profile. To assess the effect of the manufacturing accuracy of the treadmill profile on the kinematic error of planar mechanisms with rolling elements, a harmonic analysis was used with the construction of amplitude-frequency spectra of kinematic errors of installed indicators.