等截面四点接触球轴承承载能力分析

Analysis of bearing capacity of equal section four-point contact ball bearing

等截面四点接触球轴承是工业设备中核心部件之一,实现两部件之间的载荷传递和相对运转,较高的使用频率、冲击载荷、材料的原始缺陷等极易造成薄壁四点接触球轴承损伤,影响工业设备工作精度和效率。通过赫兹接触理论进行接触应力和接触面积的理论分析,获得滚动体与滚道接触区域接触应力和接触面积的解析解。建立滚动体与滚道接触有限元验证模型,通过与赫兹接触理论进行对比,验证数值模型的有效性。最后,运用验证过的滚动体与滚道接触有限元模型对滚动体与滚道接触区域承载能力进行分析。本文的研究有利于提高工业设备等截面四点接触球轴承承载能力的计算精度,为等截面四点接触球轴承的研发设计和优化设计提供可靠的手段和依据。

Equal section four-point contact ball bearing is one of the core components of industrial equipment,which plays the role of relative motion and load transfer between two components.The high use frequency,the impact load,and the original defects of materials will affect the normal operation of the bearing and the entire equipment.In this paper,theoretical analysis of the contact stress and the contact area is carried out by using the Hertzian contact theory,and the analytical solutions of the contact stress and the contact area between the rolling element and the raceway are obtained.The finite element verification model between the rolling element and the raceway is established,and the validity of the numerical model is verified by comparing it with the Hertzian contact theory.Finally,the bearing capacity of the contact area between the rolling element and the raceway is analyzed by using the validated contact model.The research is conducive to improving the calculation accuracy of the bearing capacity of the equal section four-point contact ball bearing,and provides a reliable means and basis for the design and optimization of the equal section four-point contact ball bearing.