【24h】

Study on Pre-stress Hard Cutting of Bearing Races

机译:轴承座圈预应力硬切削的研究

获取原文

摘要

The analysis on load characteristics and stress state of bearing races shows that the roll path and outside layer of a bearing race are the main part to bear the load, and that residual tensile stress is often found on workpiece surface. For the purpose of improving residual stress state on machined surface of a bearing race, a method of pre-stress hard cutting is put forward. In this paper, the principle of pre-stress cutting is introduced, and method of loading stress on bearing races, together with the calculation for pre-stress, is analyzed. A set of device with expanding mandrel for realizing the process is designed too and an experiment of pre-stress cutting is carried out on a lathe with PCBN tool. The experimental results show that, by using this method, we can get residual compressive stress on machined surface layer of a bearing race and increase the quality and contact fatigue life of bearing.
机译:对轴承座圈的载荷特性和应力状态的分析表明,轴承座圈的滚动路径和外层是承受载荷的主要部分,并且在工件表面上经常会发现残余拉应力。为了改善轴承座圈的加工表面上的残余应力状态,提出了一种预应力硬切削的方法。本文介绍了预应力切削的原理,分析了轴承座圈上的应力加载方法以及预应力的计算方法。还设计了一套用于实现该过程的带有扩展心轴的装置,并使用PCBN工具在车床上进行了预应力切削的实验。实验结果表明,通过这种方法,可以在轴承座圈的机加工表面层上获得残余压应力,从而提高轴承的质量和接触疲劳寿命。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号