汽车车身顶盖冲压成型技术研究

哈尔滨华德学院本科毕业设计（论文）AbstractThis paper taking the roof of the automobile as an examplethe formingcharacteristics of the front floor pan were analyzed aswell as the commonproperties of Automobile panel .The forming characteristics of automobilepanels and fundamentals of mould design for drawing dies are presented in thispaper,including stamping direction,addendum binder surface.This timethree-dimensional part modeling and mould designing are performed in UG,it'sconveniently and quickly compared with traditional ways.It can show the partrelation of the die more actually,reduce the defects of the die defectsof the diedesigning in practice and save the time.At the same time,the interferenceproblem of the die could be done well by using the soft UG,so the auto coverdie structure design can be improved efficiently and the time of die manufacturecan be shorten,this is very impotant to manufacturing industry ,especially themould die design and produse.Keywords the roof of the automobile;drawing die;design2