轴承套圈超高速离心磨削预应力分析  

Analysis on Prestress During Ultra-High Speed Centrifugal Grinding of Bearing Rings

作　　者：刘晓初[1,2] 何铨鹏 代东波 陈凡[1,2] 郭莹莹[1] 

机构地区：[1]广州大学机械与电气工程学院,广州510006 [2]广州大学金属材料强化研磨高性能加工重点实验室,广州510006

出　　处：《轴承》2015年第12期19-24,共6页Bearing

基　　金：国家自然科学基金项目(51275100);广州市科技计划项目(201508010051;穗科信字[2013]163-19)

摘　　要：为探索超高速离心磨削电磁无心夹具下工件预应力与转速的耦合规律,利用空间应力求解法推导出套圈在惯性力和磁吸力作用下的预应力表达式;通过实例考察周向应力和轴向应力在工件表面的分布情况,验证了超高速离心磨削的可行性;在计算工件表面周向预应力时可按平面问题进行求解。In order to explore coupling rule for workpiece prestress and rotational speed under ultra- high speed centrifugal grinding of electromagnetic centerless fixture,a prestress formula for ring in the action of inertia force and magnetic attraction force is derived according to solving method of space stress. In addition,the distribution of circumferential stress and axial stress on surface of workpiece is investigated by examples,and the feasibility of ultra- high speed centrifugal grinding is verified. A conclusion is obtained that the planar method can be used to calculate circumferential prestress on surface of workpiece.

关 键 词：滚动轴承 超高速离心磨削 电磁无心夹具 预应力 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG758[金属学及工艺—刀具与模具]