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摘要本文首先叙述了冲压模具的发展状况，模具在现代工业中的作用，和在整个国民经济中的地位，说明了冲压模具的重要性与本次设计的意义。冲裁工艺广泛应用在工业生产中，冲压模具设计与制造技术是一项技术性和经验性都很强的工作。本次毕业设计将要设计的零件是电器开关过电片，根据图纸上的尺寸和技术要求进行设计。根据分析设计零件结果选择合理的冲压工艺和合理的模具结构，在此基础上优化零件结构和选择合适的零件的材料。简单说明了模具设计的基本概念和模具设计的一般步骤、模具的分类、模具零件的分类、模具的结构形式、冲压的基本概念、弯曲的基本概念、冲压工艺基础理论、塑性力学基础理论。然后对冲压件进行工艺分析，完成了工艺方案确定，对零件排样图的设计，完成了材料利用率的计算。再进行冲裁工艺力的计算和冲裁模工作部分的设计计算，根据计算结果选取冲压所需要的设备。其次对主要零部件的设计和标准件的选择，为本次零件图的绘制和模具的成形提供依据，以及为装配图各自尺寸提供依据。通过前面的设计方案画出模具各零件图和装配图。再次根据模具的使用要求和具体加工条件设计了模具零件的加工工艺。本次设计阐述了冲压倒装复合模的结构设计及工作过程。本模具性能可靠，运行平稳，提高了产品质量和生产效率，降低劳动强度和生产成本。关键词：冲压模具、冲裁、弯曲、模具结构SwitchsheetstampingprocessanddiedesignAbstractThispaperfirstdescribesthedevelopmentofstampingdies,dieinmodernindustry,andintheentirenationaleconomystatus,stampingdieillustratestheimportanceandsignificanceofthisdesign.Blankingtechnologyiswidelyusedintheindustrialproduction,stampingdiedesignandmanufacturingtechnologyisatechnologyandexperienceverystrongwork.Thisgraduationdesignistodesignpartsofswitchpower,wasdesignedaccordingtotherequirementsofthedrawingsandtechnical.Accordingtoanalysisanddesignthereasonableselectionofpartsstampingprocessandreasonablediestructure,basedontheoptimizationofpartstructureandselecttheappropriatepartsofthematerial.Abriefdescriptionofthediedesignofthebasicconceptandthegeneralstepsofmolddesign,mold,moldpartsclassificationclassification,diestructure,stamping,bendingthebasicconceptofthebasicconcepts,basicofstampingprocesstheory,Fundamentalsofplasticmechanicstheory.Thenthestampingprocessanalysis,completedtheprocessscheme,onthepartslayoutdiagramdesign,completethecalculationofmaterialutilization.Thentheblankingforcecalculationanddesigncalculationofblankingdieworkingpart,accordingtothecalculationresultsofpressingequipmentrequired.Secondly,thedesignandstandardsonthemainpartsselection,providethebasisforformingdiefordrawingandthepartsdrawing,andtoprovidebasisfortheassemblyoftheirsize.Thedesigndrawingmoldpartsdrawingandassemblydrawing.Againaccordingtotheuserequirementsofdieandthespecificprocessingconditionsdesignedmachiningmouldparts.Thisdesigndescribesthestructureofcompounddiestampingflipdesignandworkingprocess.Themoldreliableperformance,smoothrunning,improvedproductqualityandproductionefficiency,reducelaborintensityandproductioncosts.Keywords:stampingdie,blanking,bending,moldstructure目录1绪论.............................................................................................................................52零件工艺分析及确定工艺方案.................................................................................72.1设计工件..........................................................................................................72.2工艺分析..........................................................................................................72.3工艺方案的确定..............................................................................................83主要尺寸的计算.......................................................................................................103.1弯曲中性层的确定........................................................................................103.2工件毛坯展开尺寸的计算............................................................................113.3排样图的相关计算........................................................................................124第一道工序落料冲孔模的设计..............................................................................164.1落料冲孔模力的计算....................................................................................164.1.1冲裁力的计算....................................................................................164.1.2卸料力.................................................................................................164.1.3推件力................................................................................................174.1.4顶件力..............................................................................................174.2刃口尺寸的计算...........................................................................................174.3主要零件的设计和选择................................................................................214.3.2冲孔凸模的设计.................................................................................224.3.3上固定板的设计.................................................................................234.3.4上垫板的设计.....................................................................................234.3.5凸凹模的设计....................................................................................244.3.6推件块的设计.....................................................................................254.3.7卸料板的设计.....................................................................................254.3.8下固定板的设计.................................................................................264.3.9聚氨酯橡胶的选择.............................................................................264.3.10模架的选择.......................................................................................264.3.11模柄的选择....................................................................