汽车后尾板下支撑梁一次拉延工艺数值模拟
|
摘要
汽车后尾板下支撑梁属于形状复杂的小圆角多凸台阶梯盒形拉延件,成形难度较高,通常企业采用两道拉延工序完成。利用基于UG/NX的板料成形仿真软件FASTAMP-NX对汽车后尾板下支撑梁的一次拉延成形过程进行了有限元模拟,分析在一次拉延成形中出现的主要质量问题的产生机理和影响因素,对工艺参数进行了调整,获得了良好的模拟结果并得到了实验验证,将原来的二次拉延工艺成功改为一次拉延,降低了成本,提高了效率,为优化冲压工艺和模具设计提供了依据。
A support beam of automobile belongs to the complicated box draw piece which is slightly rounded coat,multi-boss and ladders.The forming of the part is more difficult.Usually the drawing formability of the part is completed by two steps.The sheet metal forming analysis software FASTAMP-NX based on the UG/NX platform was applied in the FE simulations for the one-off drawing formability of the support beam the blanking.The reason and influencing factors of the main quality problem in the one-off drawing formability were analyzed.The most effective simulation results were obtained by optimizing the drawing technology,which was also verified by the experiment.Primary two-off technology is successfully changed into one-off drawing scheme.If the simulation results are used in the production of the support beam,it will reduce the cost,improve efficiency,and provide a reference for optimizing stamping process and mould design.
A support beam of automobile belongs to the complicated box draw piece which is slightly rounded coat,multi-boss and ladders.The forming of the part is more difficult.Usually the drawing formability of the part is completed by two steps.The sheet metal forming analysis software FASTAMP-NX based on the UG/NX platform was applied in the FE simulations for the one-off drawing formability of the support beam the blanking.The reason and influencing factors of the main quality problem in the one-off drawing formability were analyzed.The most effective simulation results were obtained by optimizing the drawing technology,which was also verified by the experiment.Primary two-off technology is successfully changed into one-off drawing scheme.If the simulation results are used in the production of the support beam,it will reduce the cost,improve efficiency,and provide a reference for optimizing stamping process and mould design.
引文
[1]赵孟涛.油底壳拉深成形工艺与模具设计[J].模具技术,2002(5):31-36.(ZhaoMeng-tao.Technologyofoil-panand the design of die[J].Die andMold Technology,2002(5):31-36).
[2]雷邦明.浅阶梯盒形件的一次拉延成形[J].模具工业,1989,96(2):1-3.(Lei Bang-ming.New process to form shallow step box shaped part byonce deep-drawing[J].Die&MouldIndustry,1989(2):1-3).
[3]崔令江.汽车覆盖件冲压成形技术[M].北京:机械工业出版社,2003:82-85.(Cui Ling-jiang.The Forming Technology of an Automobile panel[M].Beijing:Mechanical Industry Press,2003:82-85).
[4]胡星,李淑慧.高强度钢板压边力设计及敏感性分析[J].锻压技术,2007,32(6):68-72.(Hu Xing,Li Shu-hui.Design and sensitivity analysis of blank holdingforce for high strength steel sheet[J].Forging&Stamping Technology,2007,32(6):68-72).
[5]张华.摩托车油箱外壳成形过程的数值模拟及优化[J].锻压技术,2010,35(l2):148-151.(Zhang Hua.Forming process and optimization of the motorcycle tank’sshell based on digital simulation technique[J].Forging&Stamping Techn-ology,2010,35(l2):148-151).
[6]那景新,柳玉起,曹颖.油底壳一次拉延的计算机仿真与实验验证[J].中国机械工程,2000,11(6):675-678.(Na Jing-xin,Liu Yu-qi,Cao Ying.Simulation and experimentalexamination for the one-off deep drawing formability of an oil pan[J].China Mechanical Engineering,2000,11(6):675-678).
[2]雷邦明.浅阶梯盒形件的一次拉延成形[J].模具工业,1989,96(2):1-3.(Lei Bang-ming.New process to form shallow step box shaped part byonce deep-drawing[J].Die&MouldIndustry,1989(2):1-3).
[3]崔令江.汽车覆盖件冲压成形技术[M].北京:机械工业出版社,2003:82-85.(Cui Ling-jiang.The Forming Technology of an Automobile panel[M].Beijing:Mechanical Industry Press,2003:82-85).
[4]胡星,李淑慧.高强度钢板压边力设计及敏感性分析[J].锻压技术,2007,32(6):68-72.(Hu Xing,Li Shu-hui.Design and sensitivity analysis of blank holdingforce for high strength steel sheet[J].Forging&Stamping Technology,2007,32(6):68-72).
[5]张华.摩托车油箱外壳成形过程的数值模拟及优化[J].锻压技术,2010,35(l2):148-151.(Zhang Hua.Forming process and optimization of the motorcycle tank’sshell based on digital simulation technique[J].Forging&Stamping Techn-ology,2010,35(l2):148-151).
[6]那景新,柳玉起,曹颖.油底壳一次拉延的计算机仿真与实验验证[J].中国机械工程,2000,11(6):675-678.(Na Jing-xin,Liu Yu-qi,Cao Ying.Simulation and experimentalexamination for the one-off deep drawing formability of an oil pan[J].China Mechanical Engineering,2000,11(6):675-678).