﻿ 圆锥滚子对数修形的优化设计方法研究

# 圆锥滚子对数修形的优化设计方法研究Optimum Design Method for Logarithmic Crowned Tapered Rollers

Abstract: Based on the objective of elongating the fatigue life of roller bearings, an optimum design method is presented for the logarithmic crowned tapered rollers in this paper. The analysis model for contact stress distribution between crowned tapered roller and raceway, together with the computational model of bearing fatigue life, is provided as the basic of crowning design. The design parameter of logarithmic crown profile is determined after analyzing the effect of crowning parameter on stress distribution and bearing’s fatigue life under the given conditions. By introducing the fatigue life of bearing as the objective function in the crowning design, the optimal logarithmic crowning parameter can be obtained quantitatively. Moreover, the upper and lower deviation values of the crowning parameter are obtained by referring to the allowable values of the fatigue life and the contact length coefficient, providing the reference for engineering design in application.

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