快进功能键模具设计毕业设计_改0

1重庆科技学院毕业设计（论文）题目快进功能键冲压工艺编制及模具设计院（系）机械与动力工程学院专业班级机械设计制造及其自动化(应)机设2008-01学生姓名向冯锐学号2008540231指导教师李建辉职称副教授评阅教师职称2012年6月8日2学生毕业设计（论文）原创性声明本人以信誉声明：所呈交的毕业设计（论文）是在导师的指导下进行的设计（研究）工作及取得的成果，设计（论文）中引用他（她）人的文献、数据、图件、资料均已明确标注出，论文中的结论和结果为本人独立完成，不包含他人成果及为获得重庆科技学院或其它教育机构的学位或证书而使用其材料。与我一同工作的同志对本设计（研究）所做的任何贡献均已在论文中作了明确的说明并表示了谢意。毕业设计（论文）作者（签字）：年月日重庆科技学院本科生毕业设计摘要3摘要冲压是一种先进的金属加工方法，主要靠压力机和模具对板材、带材、管材和型材等施加外力，使之产生塑性变形或分离，从而获得所需形状和尺寸的工件的成形加工方法。它所具有生产率高，加工成本低，材料利用率高，产品尺寸精度稳定等优点。本次毕业设计的研究对象为快进功能键的冲压工艺编制。从成形工艺的合理性出发，首先分析了零件的结构精度特点，在满足冲压加工精度的基础上充分考虑节约成本，如果采用级进模生产时，生产效率大幅提高，非常适合大批量生产。又或选用单工序模将极难完成或选用复合模也将较难加工，达不到生产批量的要求。由此确定了选用级进模进行加工成形。加工工艺过程为：冲孔、切边、切边、弯曲、落料。同时经过进一步的分析，确定了模具的总体结构和冲压工艺力、压力中心、模具工作部分尺寸等相关工艺计算。在此基础上，绘制完成了相应的模具装配图和各非标件的零件图，并选定压力机类型及其主要参数。关键词：冲压工艺级进模冲孔落料弯曲Ⅰ重庆科技学院本科生毕业设计摘要4AbstractStampingisakindofadvancedmetalprocessingmethods,it’smainlybythepressanddieofsheet,strip,pipeandprofilessuchasexternalforceisapplied,sothattheplasticdeformationorseparation,toobtaintherequiredshapeandsizeoftheworkpieceformingprocess.Ithashighproductivity,lowprocessingcost,highmaterialutilizationratio,productsizeprecisionandstabilityadvantages.Stampingdiedesigntakefulladvantageofthefunctionofcharacteristicsofmechanicalpresses,stamping,andhighproductionefficiencyintheblankunderroomtemperatureconditions,andsignificanteconomicbenefits.Onthegraduationdesign,thedesignisinthefunctionkeysofthestampingprocesspreparation.Fromtheformingprocessofrationalitysetout,firstanalyzesthepartsofthestructureprecisioncharacteristics,tomeetthestampingprocessingaccuracybasedonfullconsiderationofcostsavings,iftheuseofprogressivedieproduction,greatlyimproveproductionefficiency,issuitableforlargebatchproduction.Ortheselectionofasingleprocessmodelwillbeextremelydifficulttocompleteorselectionofcompounddiewillbemoredifficulttoprocess,reachtheproductionrequirement.Thustodeterminetheselectionofprogressivedieforming.Machiningprocessfor:punching,cuttingedge,edgecutting,bending,blanking.Atthesametimethroughfurtheranalysis,determinethetotalstructureofthemouldandstampingtechnologyforce,centerofpressure,workingpartsofdiesizeandotherrelatedprocesscalculation.Onthisbasis,renderingthecorrespondingmoldassemblydrawingandvariouspiecesofnon-standardpartsdiagram,andselectedthetypeofthepressanditsmainparameters.Keywords:StampingprocessModulusofcontinuityPunchingBlankingBendⅡ重庆科技学院本科生毕业设计目录5目录摘要...........................................................................................................................................ⅠAbstract.........................................................................................................................................Ⅱ1绪论...........................................................................................................................................11.1设计的目的意义............................................................................................................11.3主要内容.........................................................................................................................32成形工艺性分析.......................................................................................................................42.1零件图分析.....................................................................................................................42.2冲压工艺性分析............................................................................................................42.3工艺方案的确定............................................................................................................53冲压工艺设计和冲压力的计算...........................................................................................83.1模具结构形式的确定...................................................................................................83.2排样、计算条料宽度、确定步距、材料利用率.................................................83.2.1排样方式的选择.......................................................................................................83.2.2计算条料宽度............................................................................................................93.2.3确定步距...................................................................................................................103.2.4计算材料利用率.....................................................................................................103.3冲压力的计算.............................................................................................................113.3.1冲裁力的计算..........................................................................................................113.3.2卸料力的计算..........................................................................................................123.4压力中心的确定..........................................................................................................124级进模模具的设计.................................................................................................................144.1模具零件刃口尺寸的计算........................................................................................144.1.1凹模刃口的计算