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吉林大学本科毕业论文******件修边冲孔工艺（二）及三维模具设计******piece’strimmingpunchingprocessandthree-dimensionalmolddesign学生姓名：******班级：******班学号：******学院：材料科学与工程学院专业：材料成型及控制工程指导教师：******副教授2011年6月11日吉林大学学士学位论文原创性声明本人郑重声明:所呈交学位论文，是本人在指导教师的指导下，独立进行研究工作所取得的成果。除文中已经表明引用的内容外，本文不包含任何其它和个人或集体已经发表或撰写过的作品成果。对本文的研究作出重要贡献的个人和集体，均已在文中以明确的方式表明。本人完全意识到本声明的法律成果由本人承担。学位论文作者签名：摘要自从进入20世纪以来，我们国家的汽车制造业就迅速膨胀起来，从上海大众到广东东风，从通用汽车到天津吉利，从酿酒到进军汽车模具产业的四川五粮液集团，掀起一股涉及行业内由大型卡车到小型汽车生产的调整，老牌汽车基础上出现新的产业竞争，跨行业的进入性竞争，形势一片大好。板料冲压成形以其生产效率高、操作简单、容易实现机械化和自动化处理过程，适合成批生产；在材料消耗不多的情况下，可以获得强度高、刚度大、而重量轻的零件；可得到其它加工方法难以实现的或无法加工的复杂形状零件。这些特点符合了汽车制造业面对市场挑战的要求，因此在汽车制造业中被广泛应用。本文是关于汽车变速器加强板的冲压工艺及模具设计，从工件的尺寸特点，材料性能，冲压的工艺性从而确定模具设计的工艺方案。重点分析了修边及冲孔的工艺性。重点介绍了模具尺寸的确定、成形力计算、冲压设备的选择和模具结构的设计、各种标准件的选用以及模具材料的选用等。运用CAD，CATIA软件对模具进行三维设计、虚拟装配，模拟冲压模具的工作过程。关键词:冷冲压；模具；高强钢；三维设计、虚拟装配AbstractSinceenteringsincethe20thcentury,ourcountry'scarindustryisquicklyswell,fromShanghaiVolkswagentoguangdongdongfeng,fromgmtotianjingiovannicobolligigli,frombrewingintoautomouldindustrytothesichuanwuliangyegroup,startingasharesinvolvesbylargetrucksintheindustrytosmallcarproductionadjustment,basedonoldcarappearednewindustrycompetition,cross-industryintosexualcompetition,thesituationisexcellent.Sheetmetalstampingwithitshighproductionefficiency,simpleoperation,easytorealizemechanizationandautomationprocess,suitableformassproduction;Fewinmaterialconsumption,itcangethighintensity,stiffnessbig,andlightweightparts;Otherprocessingmethodsavailabledifficult-to-achieveorunabletoprocessingcomplexshapeparts.Thesecharacteristicstomeetthechallengesfacingthemarketofautomanufacturingrequirements,soinautomobilemanufacturingindustryhasbeenwidelyused.Thispaperisabouttheautotransmissionreinforcingplatestampingtechnologyanddiedesign,fromsizeofworkpiecematerialproperties,stampingcharacteristics,thetechnologyofmoulddesigntodeterminetheprocessscheme.Mainlyanalyzedthetechnologyoftrimmingandpunching.Mainlyintroducesmoldsizedetermine,formingforcecalculation,stampingequipmentselectionandmoldstructuredesign,allkindsofstandardselectionandmaterialselectionofmouldetc.UsingCATIAsoftwaretomoldCAD,three-dimensionaldesign,virtualassembling,simulationstampingdieworkingprocess.Keywords：coldstamping;Mould;three-dimensionaldesign;virtualassembly;trixiality目录前言................................................1第一章绪论.........................................31.1引言..........................................................31.2冷冲压技术的现状及发展.........................................31.2.1模具的发展现状...........................................31.2.2冲压的概念、特点及应用...................................51.2.3.冲压技术的发展趋势.......................................61.3选题意义及主要研究内容.........................................81.3.1选题意义.................................................81.3.2主要研究（设计内容）.....................................91.4发展趋势与研究的主攻方向......................................111.4.1国内外发展趋势..........................................111.4.2发展趋势主要表现........................................12第二章设计任务及设计方案分析.....................152.1零件的分析...................................................152.1.1设计内容................................................152.1.2拟解决的主要问题........................................182.2设计方案及分析................................................192.2.1冲裁加工原理............................................192.3零件冲裁工艺分析..............................................202.3.1冲裁件最小孔间距的校核..................................222.3.2冲裁件最小孔边距的校核..................................222.3.3对零件精度的分析........................................222.4拟订工艺方案..................................................222.4.1基本工艺方案确定........................................222.4.2模具形式与结构比较......................................242.4.3模具总体设计............................................25第三章模具设计计算................................293.1基本尺寸计算..................................................293.1.1毛坯尺寸................................................293.1.2计算材料利用率..........................................293.2冲压力的计算..................................................293.2.1冲裁力的计算...........................................293.2.2推件力、顶件力、卸料力、的计算..........................303.3模具压力中心的确定...........................................313.4工作零件刃口尺寸计算.........................................313.4.1冲裁间隙分析...........................................313.4.2落料冲孔凹、凸模刃口尺寸计算............................33第四章主要零部件设计..............................354.1模架的选用...................................................354.2冲孔凸模.....................................................354.3冲孔凹模.....................................................364.4卸料部件的设计...............................................374.4.1卸料件的设计...........................................374.4.2卸料螺钉的选用.........................................384.5导向装置的选用...............................................394.5.1导柱的选用.............................................394.5.2导套的选用.............................................404.6顶件装置的选用...............................................414.7压力机的选择........................