﻿ 圆锥滚子修形对接触副应力分布的影响

# 圆锥滚子修形对接触副应力分布的影响Effects of Tapered Roller Crowing on Contact Stress Distribution

Abstract: Roller crowning of rolling element bearings is an important means to reduce the stress concentra-tion at the edge of contact pairs, and to improve bearing fatigue life. The contact model of crowned tapered roller/raceway contact pair is established in this paper, which is solved based on influence coefficient method. The stress distribution of contact pair under light load and heavy load conditions are calculated respectively, and then the effects of tapered roller with different crowning curves on the contact stress distribution are analyzed. The results show that the logarithmic crowning has an optimal effect on contact stress distribution. However, the optimum modification curve corresponds to the actual working conditions. Moreover, the contact stress distribution of tapered roller/raceway contact pair is not symmetrical about the center line of roller, and the contact stress of the small end of roller is greater than the stress of the large end.

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