基于残余应力的薄壁件装夹方案优选技术  

Optimal Selection Technique of the Fixturing Scheme of Thin-walled Workpiece Based on the Residual Stress

作　　者：辛顺强[1] 吴竹溪[1] 陈绍清[1] 肖洁[1] 叶海潮[1] 

机构地区：[1]南昌航空大学航空与机械工程学院,南昌330063

出　　处：《机械工程师》2008年第11期70-72,共3页Mechanical Engineer

基　　金：国家航空科学基金项目(2006ZE56006);江西省教育厅科学技术研究基金项目(2007-172);南昌航空大学研究生创新基金项目(YC2007009);南昌航空大学大学生科技创新基金项目(106235220050)

摘　　要：残余应力是影响薄壁件加工精度的重要因素,利用有限元法合理分析和优化装夹方案对薄壁件的加工有着重要指导意义。在毛坯具有初始残余应力的情况下,文中着重研究了装夹方案与加工变形之间的关系,提出了以最小加工变形为目标、装夹方案为设计变量的优化设计方法,实现了薄壁件加工变形的控制。The residual stress is an important factor to influence the machining accuracy. Therefore, it is significant to guide the thin-wailed workpiece machining operation when finite element method is used to analyze and optimize the fixturing scheme. Under the condition of the residual stress, the relationship between the fixturing scheine and machining deformation is studied in this paper. On the other hand, the optimal design approach, in which minimal machining deformation and fixturing scheme are respectively design objective and variable, is proposed, so that the machining deformation of the thin-walled workpicce can be controlled.

关 键 词：残余应力 薄壁件 装夹方案 优选 

分 类 号：V260.5[航空宇航科学与技术—航空宇航制造工程] TH164[机械工程—机械制造及自动化]