王志阳, 王文元, 周红梅,等.一种任意可靠度的修正滚动轴承寿命系数直接计算方法[J].河南理工大学学报（自然科学版）,2020,39(6):94-99.

WANG Z Y, WANG W Y, ZHOU H M, et al.A direct computing method of life adjustment factor of rollingelement bearing for any reliability[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(6):94-99.

一种任意可靠度的修正滚动轴承寿命系数直接计算方法

王志阳, 王文元, 周红梅, 李新华

河南理工大学 机械与动力工程学院，河南 焦作454000

摘要:韦布尔分布是被广泛接受的滚动轴承可靠度寿命分布形式，GB/T 6391-2010和ISO 281 ：2007标准中的滚动轴承可靠性寿命修正系数( a₁ )就是据此通过大量的试验并考虑大多数生产厂家的工艺水平制定的。目前非标情况下的寿命修正系数计算一般需要通过查表法和线性插值方法近似获得。本文提出一种基于韦布尔分布的任意可靠度滚动轴承寿命直接计算方法，该方法仅通过3个参数即可实现任意可靠度的滚动轴承寿命修正系数的计算。与GB/T 6391-2010 ，ISO 281 ：2007标准的查表法相比，该方法具有简洁、精度高、逻辑清晰、适用面广的特点。最后，用实例验证了该方法在滚动轴承修正寿命计算中的有效性。

关键词:韦布尔分布;可靠度寿命修正系数;轴承寿命;滚动轴承;疲劳寿命

doi:10.16186/j.cnki.1673-9787.2020.6.13

基金项目:国家自然科学基金资助项目（U1304523 ）；河南省高等学校重点科研项目（20A460015 ）

收稿日期:2020/02/20

修回日期:2020/04/19

出版日期:2020/11/15

A direct computing method of life adjustment factor of rollingelement bearing for any reliability

WANG Zhiyang, WANG Wenyuan, ZHOU Hongmei, LI Xinhua

School of Mechanical and Power Engineering， Henan Polytechnic University ，Jiaozuo 454000 ， Henan， China

Abstract:Weibull distribution is a widely accepted life probability distribution of rolling element bearing. Life adjustment factor for reliability ( a₁ ) from GB/T 6391-2010 and ISO 281 ：2007 is originated from many tests according to Weibull distribution and the process level of most manufacturers. The irregular factor a₁  generally is approximately obtained from the specified life adjustment factor for reliability by look-up on table and linear interpolation. A direct computing method of life adjustment factor for any reliability only by three parameters of the Weibull distribution was proposed. The method had the characteristics of simplicity，high precision，clear logic and wide applications compared with look-up table method. The effectiveness of the method in the calculation of modified life of rolling element bearing was finally verified by an example.

Key words:Weibull distribution;life adjustment factor for reliability;bearing life;rolling element bearing;fatigue life

一种任意可靠度的修正滚动轴承寿命系数直接计算方法_王志阳.pdf