皖西学院本科毕业论文（设计）本科毕业论文（设计）论文题目冲压工艺模具结构设计I皖西学院本科毕业论文（设计）姓名（学号）李系别机系专业机械设计制造及其自动化导师姓名冲压工艺模具结构设计作者78290349指导教师摘要：本文是关于支板冲压工艺的模具结构设计，包括冲孔和落料两个基本工序。根据零件形状尺寸和II皖西学院本科毕业论文（设计）材料要求选用倒装式复合模具，采用工件间无搭边值的直对排样。用两副模具，一次性落两个料，无需翻转条料即可完成所有冲裁。因直对排样，所冲两工件关于中心对称，故模柄设计中心即为两副模具的对称中心。挡料装置采用侧刃，以保证步距精度。依据材料外缘尺寸设计凹模模具，再以凹模实际尺寸采用配作法确定凸凹模外缘尺寸；根据冲孔要求设计凸模尺寸，再以冲孔凸模实际尺寸确定凸凹模的凹模尺寸，其它零件由实际情况选用标准件。确定了零件和模具的尺寸后计算出所需压力机的公称压力，并据此选择压力机。本套模具可进行大批量高效生产，装配简单，性能可靠，具有较高的使用寿命。关键词：支板，冲压工艺，复合模RammingcraftmoldstructuraldesignWrittenbyLiChanglongSupervisedbySunYongAbstract：Thispaperison-boardprocessofstampingdiestructuredesign,includingpunchingandblankingtwobasicprocesses.Accordingtopartssizesandshapesandmaterialsrequestedselectionofflip-die,whousedpartofanedgestraighttothevalueofthelayout.Withtwodie,twoone-timedrop-expected,noflipexpectedtocompleteallofthepunching.Directresultofthelayout,thetwopartsonthecenter-symmetry,themodulehandlesDesignCenteristhesymmetryofthetwodieCentre.Blocktheadoptionofsideedgedevice,thesteptoensureaccuracy.Basedontheouteredgeofmaterialsdesignsizedie,andthentodiewithasizeoftheactualpracticeofdeterminingtheouteredgeofdiesize,accordingtoPunchdesignedpunchsize,andthenpunchingpunchtodeterminetheactualsizeofdieSize,Andotherpartsfromtheactualsituationofselectioncriteria.IdentifythepartsanddieafterthecalculationofthesizenecessarytopresstheNominalpressure,and,accordinglychoosePress.Thissetofmoldcanbeefficientlyproducedinlargequantities,theassemblyofsimple,reliable,highlife.Keywords：Supportingplate,Rammingcraft,Superposabledie目录1序言................................................................12工艺分析.........................................................23冲裁工艺方案的确定........................................3III皖西学院本科毕业论文（设计）3.1方案种类....................................................33.2方案比较....................................................33.3方案的确定.................................................34模具结构形式的确定........................................34.1排样设计与计算..........................................44.1.1排样方法的确定....................................44.1.2确定搭边值...........................................44.1.3确定条料步距........................................44.1.4条料利用率...........................................54.1.5排样图..................................................54.2冲裁压力的计算..........................................64.2.1冲裁力的计算........................................64.2.2卸料力..................................................64.2.3推件力..................................................64.2.4顶件力..................................................74.3压力机公称压力的确定及机型选择..............74.4单个冲裁件压力中心的确定........................84.4.1凹凸模刃口轮廓....................................84.4.2凸模刃口轮廓尺寸及冲裁力...................94.4.3单个零件压力中心坐...
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