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1XXXX大学毕业设计说明书班级：姓名：学院：专业：题目：U形托架冲孔、弯曲复合工艺研究及模具CAD/CAM指导教师：职称:职称:20**年**月**日2中文摘要根据零件图的设计要求，绘制零件的二维和三维图，进行冲压工艺分析，制定工艺方案，编制零件的加工工艺过程卡。设计内容还包括，排样图设计，总的冲压力计算机压力中心计算，刃口尺寸计算，弹簧、橡胶件的计算和选用，凸、凹模或凸凹模结构以及其他冲模的，零件的结构设计，绘制模具装配图和工作零件图等。编写毕业设计说明书。比较工艺方案并确定工艺方案。计算毛坯的尺寸，设定各步半成品的尺寸并绘出工序简图。计算各个工序的工作压力，设计并绘出模具简图，选取各个合适的零件。了解落料模、弯曲模、冲孔模的特点和需要注意的问题，在模具简图的基础上进行模具结构工艺性分析，进行模具结构设计并选择冲压设备。进行凸凹模工作尺寸的计算和设计。关键词：工艺方案；模具简图；结构设计3BracketstampingprocessanddiedesignABSTRACTAccordingtotheplandesignrequirementsforspareparts,renderingpartsofthetwo-dimensionalandthree-dimensionalmap,astampingprocessanalysis,formulationoftheprogram,partsoftheprocessofprocessingcards.Designelementsinclude,layoutdesignplans,theoverallpressureonthecomputer-pressurecenter,theedgesize,springs,rubberpiecesofcalculationandchoice,punch,matrixorpunchmatrixofthestructureandotherpartsofthestructuredesignAnddrawdieassemblyandworkplans,andotherparts.DesignManualpreparedbygraduation.Comparisonoftheprogrammeandtoidentifytechnologyprogrammes.Roughcalculationofthesize,eachstepsettingthesizeofsemi-finishedproductsandprocessesdrawnsketch.Calculationofthepressureofworkprocessestodesignandmolddrawnsketch,selecttheappropriateparts.Learnblankingdie,bendingdie,PiercingDieattentiontothecharacteristicsandneedsoftheproblem,inthemoldthumbsdiestructureonthebasisofanalysis,structuraldesignandchoosediestampingequipment.Tuao-sizeworkforthecalculationanddesign.KEYWORD:Craftproject；molddiagram；structuredesign4目录第一章前言...............................................................................6第二章工艺分析及模具设计.................................................................82.1冲压件工艺性分析.................................................................82.1.1零件的功用与经济性分析.....................................................82.1.2零件工艺性分析.............................................................82.2工艺方案的设计与确定...........................................................112.3材料利用率的计算...............................................................122.3.1提高材料的利用率.........................................................122.3.2材料利用率的计算.........................................................132.4.1排样方法..................................................................142.4.2搭边......................................................................152.4.3计算步距与条料宽度........................................................162.5模具结构设计和力的计算...........................................................162.5.1坯料展开长度的计算........................................................162.5.2确定排样与裁板方案........................................................182.5.3计算各工序冲压力或弯曲力..................................................19第三章冲压设备的选择....................................................................233.1冲压设备规格的选择..............................................................243.2公称压力（吨位）.................................................................243.3各套模具冲压设备的选择...........................................................243.4装模高度........................................................................253.5压力中心的计算..................................................................25第四章凸模与凹模的刃口尺寸计算..........................................................264.1冲裁模刃口尺寸计算...............................................................274.2弯曲模工作部分尺寸确定..........................................................31第五章弹性组件的计算与选用及其他模具组件的选择..........................................385.1弹簧的选用......................................................................385.2模具其他部件的选择..............................................................415.2.1模架的选择：..............................................................415.2.2模柄的选择：..............................................................425.2.3模具导向零件的选择：......................................................425.2.4模具定位零件的选择：......................................................425.2.5卸料和出件装置的选择：....................................................435.2.6垫板的选择：..............................................................435.2.7螺钉和销钉的选择：........................................................435.2.8固定板的选择：............................................................445.2.9模具凸凹模的材料选择：....................................................44第六章冲孔凸模的加工与编程..............................................................456.1冲孔凸模的工艺设定及加工程序的编制..............................................456.1.1工艺过程的设定............................................................466.1.2图样分析和决定安装基准....................................................466.1.3确定工件坐标系...........................................................4656.1.4加工程序.................................................................46第七章结论...........................................................................48参考文献..............................................................................49致谢...................................................................................48充值后就可以下载此设计说明书。全套资料包含有相应的word说明书和CAD图纸（共计9张图纸及工序卡片2张）和UG制图若干张。需要全套资料的朋友请加1：1459919609或2：196904320