轴承圈加工残佘应力及其径向热变形研究  

Residual stress and radial thermal deformation during hard turning bearing ring

作　　者：徐兰英[1] 伍强[1] 何宝兰 赵鹏 Lan-ying XU;Qiang WU;Bao-lan HE;Peng ZHAO(Guangdong Polytechnic Normal University,Guangzhou 510635,China)

机构地区：[1]广东技术师范学院机电学院,广州510635

出　　处：《机床与液压》2020年第18期65-69,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(5135101);广东省普通高校省级(基础研究及应用研究)重大项目(201KZDXM053,2019XJZZ13)。

摘　　要：热变形的大小受零件的形状、材料以及表层残余应力等因素的影响。本文基于工程弹性力学和热力学原理分析了精车加工中轴承套圈产生的表层残余应力对几何形体热变形的影响,建立了轴套类零件的基于残余应力的热变形数学模型,对加工过程中由残余应力产生的径向变形进行了定量分析,并通过实验测试,热变形误差最大为3.8%,对残余应力引起的零件变形数学模型进行了验证,计算结果和实验数据与数学模型大致吻合。该研究结果对机器人用的关节轴承、风电装备用轴承等零件的精密加工有重要的指导作用。Thermal deformation is affected by the shape,material and surface residual stress of the machined parts.Based on the principle of elastic mechanics and thermodynamics,this paper establishes the thermal deformation model of the bearing ring based on the residual stress and quantitatively calculates the radial deformation produced by the residual stress.The thermal deformation error is less than 3.8%;the results and the experimental data are in good agreement with the mathematical model.This study sets important gidance for precision machining of the joint bearings for robots and the bearings for wind power equipment.

关 键 词：轴承 残余应力 热变形 

分 类 号：TH1614[机械工程—机械制造及自动化]