Effects of Ball Groupings on Ball Passage Vibrations of Rolling Guides

Pitching and Yawing Ball Passage Vibrations

Abstract

The effects of ball groupings on the pitching and yawing ball passage vibrations of the rolling guides under low speed operation were studied. In the experiments, the test rolling guides with three types of ball groupings were prepared, and the pitching and yawing ball passage vibrations of each test rolling guide were measured using a laser autocollimator. Moreover, a calculation method of the ball passage vibrations for a rolling guide with an arbitrary ball grouping was presented. The conclusions were obtained as follows : (1) The occurrence of the pitching and yawing ball passage vibrations were affected by the ball groupings. (2) For the occurrence, the time waveforms and the r. m. s. values of the pitching and yawing ball passage vibrations for the given ball groupings, the calculated results based on the presented method were almost matched with the experimental results.