Thin-walled aluminum alloy tube NC precision bending based on finite element simulation  

作　　者：谷瑞杰 杨合 詹梅 李恒 

机构地区：[1]School of Materials Science and Engineering,Northwest Polytechnical University,Xi'an 710072,China

出　　处：《中国有色金属学会会刊：英文版》2006年第A03期1251-1255,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project (50225518) supported by the National Science Foundation of China for Distinguished Young Scholars;Project (50175092;59975076) supported by the National Natural Science Foundation of China;Project supported by the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of MOE, PRC;Project (04H53057) supported by the Aeronautical Science Foundation of China;Project (Z200518) supported by the Graduate Starting Seed Fund of Northwestern Polytechnical University;Project (20020699002) supported by the Specialized Research Fund for the Doctoral Program of Higher Education

摘　　要：Elongation and springback are the bottleneck problems of thin-walled aluminum alloy tube NC precision bending. So thin-walled aluminum alloy tube NC precision bending based on finite element simulation is put forward. The finite element model of thin-walled aluminum alloy tube NC bending is established based on the DYNAFORM platform. The process of thin-walled aluminum alloy tube NC precision bending is simulated with the model and the elongation and springback of tube bending can be gained. A new method of measuring the elongation of thin-walled tube NC precision bending named 'pressure die measuring method' is put forward and the computing equations of bending angle, bending radius, blanking length and initial bending section based on elongation and springback angle are derived. The bending angle, bending radius, blanking length and initial bending section of tube bending can be gained with these equations based on the elongation and springback angle from the simulation. The study can be used to control the quality of thin-walled aluminum alloy tube NC bending so that precision bending without redundance can be realized.Elongation and springback are the bottleneck problems of thin-walled aluminum alloy tube NC precision bending. SO thin-walled alurninum alloy tube NC precision bending based on finite element simulation is put forward. The finite element model of thin-walled aluminum alloy tube NC bending is established based on the DYNAFORM platform. The process of thin-walled aluminum alloy tube NC precision bending is simulated with the model and the elongation and springback of tube bending can be gained. A new method of measuring the elongation of thin-walled tube NC precision bending named ＇pressure die measuring method＇ is put forward and the computing equations of bending angle, bending radius, blanking length and initial bending section based on elongation and springback angle are derived. The bending angle, bending radius, blanking length and initial bending section of tube bending can be gained with these equations based on the elongation and springback angle from the simulation. The study can be used to control the quality of thin-walled aluminum alloy tube NC bending so that precision bending without redundance can be realized.

关 键 词：薄膜 铝合金 弯管 有色金属 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]