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1、桂林理工大学本科毕业设计·论文摘要本次设计的内容是某轿车前车门外板的冲压模具，分析了汽车覆盖件及其冲压模具的特点及要求。汽车覆盖件的尺寸大结构属于复杂的曲面结构，零件表面的质量要求高，因此对其模具的设计也比较复杂。该零件的数学模型为由曲面构成的非参数化特征，首先利用UG软件绘制该零件的三维造型，再对其成形特点和成形工艺进行分析，为了得到合格的零件产品，必须先进行生产方案的分析与确定。再利用Dynaform软件进行数值模拟分析，借助软件对其拉深方向、工艺补充、坯料尺寸、零件的成形极限、厚度变化情况和拉延力等进行
2、分析计算，最后是对其成形模具进行设计。拉延模的设计是本设计的重点，包括冲压方向的确定、内外工艺补充面、压料面的确定、拉延筋的设计、工艺计算等，重点对拉延凸模、凹模、压边圈进行设计，还有对顶件装置、导向装置、合模限位装置、起吊装置和通气孔等进行设计。工件在拉延成形之后需要进行修边和冲孔，在这里以拉延模为基础对修边冲孔模进行简单的设计和说明，完成工件的冲压成形。最后绘制了拉延模具的二维装配图和部分零件图。关键词：车门外板；覆盖件；工艺分析；模具设计；UGV桂林理工大学本科毕业设计·论文Thedesignofcar
3、doorpanelsstampingdieStudent:ZHENGZhiTeacher:TANKai-shunTANGLu-wenSUNBao-fuAbstract:Thecontentisdesignedforacarbeforethecardoorpanelstampingdies,analyzesandstampingautomotivepanelcharacteristicsandrequirements.Largesizestructureofanautomobilecoveringpartsar
4、ecomplexsurfacestructure,highqualityrequirementsofthepartsurface,sothedesignoftheirmoldsmorecomplicated.Mathematicalmodelofthepartofthegroundsofnon-parametricfeaturecurvedsurface,thefirstuseofUGsoftwaretodrawthree-dimensionalmodelingofthepart,andthenanalyze
5、dthecharacteristicsshapingandformingprocesses,inordertogetqualifiedpartsproductsmustbeproducedprogramsAnalysisanddetermination.ReuseDynaformnumericalsimulationanalysissoftware,withthesoftwaretoitsdrawingdirection,forminglimitaddendum,blanksize,partthickness
6、changesanddrawingforceofanalysisandcalculation,andfinallythedesignofitsmold.Drawingdiedesignisthefocusofthisdesign,includingstampingdirectionisdetermined,bothinsideandoutsideaddendum,binderdeterminationdrawbeaddesign,processcalculation,focusingondrawingpunc
7、h,die,blankholderringdesign,aswellasfortoppiecesofequipment,guides,clampingstopper,liftingdeviceandthevent,etc.design.Afterformingtheworkpiecedrawingneededtrimmingandpunching,drawingdieinherewiththebasisfortrimmingpunchingdiedesignandsimpleinstructionstocom
8、pletethestampingworkpieceshape.Finally,drawthetwo-dimensionaldrawingdieassemblydrawingandsomepartsFig.Keywords：cardoorpanels；cover；processpnalysis；molddesign；UGV桂林理工大学本科毕业设计·论文目次摘要IAbstractII1绪论11.1概述1
