多点式环形自适应夹具的应用分析  

Application Analysis on Multi-Pointed Circular Self-Adaptive Fixture

作　　者：赵东宏[1,2] 卢章平[1] 王庭俊[2] 王武林[2] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]扬州工业职业技术学院,江苏扬州225127

出　　处：《轴承》2016年第1期21-23,共3页Bearing

基　　金：教育部博士点基金项目(20113227110007)

摘　　要：薄壁环形件的装夹定位比较困难,分析传统三爪卡盘、浮动夹具存在的不足,针对薄壁套圈毛坯,研制出多点式环形自适应夹具,其综合了机械结构和液压结构的优点,使接触点数量成倍增加,实现了多点浮动。有限元分析和生产实践证明,夹具能在不影响装夹效率的同时显著降低夹紧变形和残余应力,增加了夹持稳定性和可靠性。The fixation of thin - walled circular parts is difficult. The disadvantages of traditional three jaw chuck and floating fixture are analyzed. Aiming at thin - walled ring blanks, the multi - pointed circular self - adaptive fixture is developed, combining advantages of mechanical structure and hydraulic structure. The number of contact points grows exponentially, and multi - pointed floating function is achieved with the fixture. The finite element analysis and produc- tion practice prove that the fixture can obviously decrease clamping deformation and residual stress without affecting clamping efficiency, and the stability and reliability are improved.

关 键 词：薄壁轴承 套圈 多点式夹具 加工变形 接触应力 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG75[金属学及工艺—刀具与模具]