アンギュラ玉軸受運転時における玉荷重の解析

概要

論文の詳細を見る
Spindles used in machine tools, especially machining centers, must operate at high speeds with high stifihess and low temperature rise in order to achieve improvements in productivity and accuracy of the machine. Usually, preloaded angular contact ball bearings are used to satisfy these requirements. However, during high-speed operation, bearing internal clearance is reduced due to thermal and centrifilgal expansion of inner ring. Besides the expansion of the inner ring, the centrifugal force acting on the balls increases the preload on the bearings. As a result these bearings can have problems of short life and seizure. Therefore, in high-speed operations, it is important to simulate the increase in ball contact load on races and determine the optimum internal elearance for the bearings. This paper introduces an analyiical method to calculate ball loads considering the centrifugal effects on the inner ring and balls simultaneously.
公益社団法人精密工学会の論文
2001-04-05