拨叉的CADCAPP设计及夹具PROE造型说明书毕业论文.doc

-I-拨叉的CAD/CAPP设计及夹具PROE造型摘要我的毕业设计题目是拨叉的CAD/CAPP设计及夹具PROE造型，本次的毕业设计中我的论文分为三大部分：第一部分主要是拨叉的工艺规程设计。其中包括采用CAD完成了零件图，用PROE完成了毛坯图的绘制。完成了拨叉的工艺规程设计，主要包括确定设计类型，确定毛坯制造形式，制定工艺路线，选择机床及工艺设备，确定机械加工余量，工序尺寸和毛坯尺寸，以及切削用量和基本工时的确定。运用CAPP软件完成了拨叉的机械加工过程卡和工序卡。第二部分主要是拨叉的夹具设计。在这一部分的内容中，主要包括零件的定位基准的选择，定位机构的设计，定位远见的尺寸的确定，定位误差的分析。设计夹具主要完成了加紧机构的设计，加紧力及夹紧机构的设计，夹紧力及夹紧方向的确定，以及所选择的夹紧元件。夹紧机构主要是采用螺母和压板的手动压紧，其定位和加紧机构简单，方便可靠。第三部分主要是采用Pro/engineer完成了拨叉的夹具造形。其中主要是详述了拨叉零件的绘制过程。关键词：拨叉；Pro/engineer；CAPP-II-TheCAD/CAPPDesignOfStirTheForkAndCreateTongsShapeWithPro/EngineerAbstractThetopicofmygraduatedesignistheCAD/CAPPdesignofstirtheforkandcreatetongsshapewithPro/engineer,inthisgraduatedesign,mygraduatethesisprimarilyisdividedintothreebigparts:Thefirstpartisthecraftruledesignofstirthefolkprimarily.AmongthemincludingadopttheCADcompletedthesparepartsdiagram,semi-finishedproductdiagramdraws.Completedtostirthecraftrulesdistanceofthefolkdesign,primarilyincludingmakesuretheproductiontype,makingsurethesemi-finishedproductmanufacturingform,establishingthecraftroute,choosingthemachinebedandcraftequipments,makingsurethemachineprocessremainingmeasures,workprefacesizewithsemi-finishedproductsizeandthesizeofslicethedosage,makingsurethebasicman-hourreally.ApplyingCAPPsoftwaretocompletethemachineofthefolkprocessandtheprocesscardwiththeworkprefacecard.Thesecondpartprimarilyisthedesignoftongstostirthefork.Inthispartofcontenses,includingthefiducialchoiceinfixedpositionofthesparepartsprimarily,thedesignofthefixedpositionoftheorganization,fixedpositionandtheanalysisforthesizeofsettling,positioningerrormargin.Thetongsdesignincludingcompletedtheclipdesignofthetightorganizationprimarily,clipthetightdintandsetupthedirectiontosettlreally,andchooseofthecliptightofapiece.Clipthetightorginationprimarilyistoadopttheboltandtheknothole-III-withpressmovetocompresstights,thefixedpositionwithclipthetightorginationsimple,convenienceanddependable.ThethirdpartisthetongstoadoptPro/engineercompletingtostirtheforkshapeprimarily.Amongthemprimarilyfinishedtheprocessofdrawingofthestirtheforkindetail.Keywords:stirthefork；Pro/engineer；CAPP-IV-目录摘要.IAbstract.II第1章绪论.6第2章零件的分析.72.1拨叉的作用.72.2拨叉的加工工艺过程分析.72.2.1拨叉的分析.72.2.2合理选择定位基准.72.2.3表面加工法.72.2.4加工顺序安排.8第3章零件的工艺规程设计.93.1确定零件生产类型.93.1.1确定生产类型的依据生产纲领.93.1.2确定生产类型.93.2确定毛坯的制造方式.93.3制订工艺路线.103.3.1基准的选择.103.3.2零件表面加工方法的选择.113.3.3热处理的位置.123.3.4零件的表面加工顺序的划分安排.123.3.5工艺方案比较.133.4机床及工艺装备的选择.143.4.1机床的选择.143.4.2刀具的选择.153.4.3量具的选择.153.5机械加工余量工序尺寸及毛坯尺寸的确定.163.6切削用量及其基本工时的确定.183.6.1确定切削用量.183.6.2工时定额的计算.19第4章CAPP简介.294.1CAPP技术.294.2CAPP系统的结构组成.294.2.1零件信息的获取.294.2.2工艺决策.29