倾覆力矩对推力球轴承疲劳寿命的影响  

Influence of Overturning Moment on Fatigue Life of Thrust Ball Bearings

作　　者：罗继伟[1] 伍海云 

机构地区：[1]洛阳轴研科技股份有限公司,河南洛阳491039 [2]奥新(厦门)轴承有限公司,福建厦门361021

出　　处：《轴承》2010年第9期1-4,共4页Bearing

摘　　要：由于滚动轴承标准中推力球轴承基本额定寿命的计算没有考虑倾覆力矩的影响,造成其误差较大,针对此问题,考虑了推力球轴承在轴向力和倾覆力矩作用下钢球的实际载荷分布,用Lundberg和Palmgren方法计算了轴承的疲劳寿命,并在此基础上拟合出了倾覆力矩与增量当量载荷之间的关系,对滚动轴承标准中推力球轴承基本额定寿命的计算公式进行了修正,计入了倾覆力矩的影响。修正后的寿命计算方法不仅简便,而且准确。In the calculation of the basic rating life of thrust ball bearings,the influence of overturning moment is not taken into account in rolling bearing standard,resulting in larger error.Armed at the issue,the actual load distribution is considered under axial force and overturning moment;the fatigue life of bearings is calculated with Lundberg-Palmgren method.On the basis,the relation between overturning moment and increment equivalent load is fit out,and the formula is modified for calculating basic rating life of thrust ball bearing in the bearing standard,considering the influence of overturning moment.The modified formula is simple and accurate.

关 键 词：推力球轴承 倾覆力矩 疲劳寿命 

分 类 号：TH133.331[机械工程—机械制造及自动化]