U形件托架的冲孔落料、弯曲复合模具工艺设计研究

1XXXX大学毕业设计说明书设计Q扣1：1459919609Q扣2：1969043202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................................................................................................................................................................5第二章工艺分析及模具设计....................................................................................................................................72.1冲压件工艺性分析.....................................................................................................................................72.1.1零件的功用与经济性分析.............................................................................................................72.1.2零件工艺性分析.............................................................................................................................72.2工艺方案的设计与确定.........................................................................................................................102.3材料利用率的计算.................................................................................................................................112.3.1提高材料的利用率......................................................................................................................112.3.2材料利用率的计算......................................................................................................................122.4.1排样方法.......................................................................................................................................132.4.2搭边...............................................................................................................................................142.4.3计算步距与条料宽度...................................................................................................................142.5模具结构设计和力的计算........................................................................................................................152.5.1坯料展开长度的计算...................................................................................................................152.5.2确定排样与裁板方案...................................................................................................................162.5.3计算各工序冲压力或弯曲力.......................................................................................................18第三章冲压设备的选择..........................................................................................................................................223.1冲压设备规格的选择...............................................................................................................................233.2公称压力（吨位）....................................................................................................................................233.3各套模具冲压设备的选择........................................................................................................................233.4装模高度...................................................................................................................................................233.5压力中心的计算.......................................................................................................................................24第四章凸模与凹模的刃口尺寸计算......................................................................................................................254.1冲裁模刃口尺寸计算................................................................................................................................264.2弯曲模工作部分尺寸确定.......................................................................................................................30第五章弹性组件的计算与选用及其他模具组件的选择......