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拨叉的CADCAPP设计及夹具PROE造型说明书毕业论文.doc

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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/engineerCAPPIITheCAD/CAPPDesignOfStirTheForkAndCreateTongsShapeWithPro/EngineerAbstractThetopicofmygraduatedesignistheCAD/CAPPdesignofstirtheforkandcreatetongsshapewithPro/engineer,inthisgraduatedesign,mygraduatethesisprimarilyisdividedintothreebigpartsThefirstpartisthecraftruledesignofstirthefolkprimarily.AmongthemincludingadopttheCADcompletedthesparepartsdiagram,semifinishedproductdiagramdraws.Completedtostirthecraftrulesdistanceofthefolkdesign,primarilyincludingmakesuretheproductiontype,makingsurethesemifinishedproductmanufacturingform,establishingthecraftroute,choosingthemachinebedandcraftequipments,makingsurethemachineprocessremainingmeasures,workprefacesizewithsemifinishedproductsizeandthesizeofslicethedosage,makingsurethebasicmanhourreally.ApplyingCAPPsoftwaretocompletethemachineofthefolkprocessandtheprocesscardwiththeworkprefacecard.Thesecondpartprimarilyisthedesignoftongstostirthefork.Inthispartofcontenses,includingthefiducialchoiceinfixedpositionofthesparepartsprimarily,thedesignofthefixedpositionoftheorganization,fixedpositionandtheanalysisforthesizeofsettling,positioningerrormargin.Thetongsdesignincludingcompletedtheclipdesignofthetightorganizationprimarily,clipthetightdintandsetupthedirectiontosettlreally,andchooseofthecliptightofapiece.ClipthetightorginationprimarilyistoadopttheboltandtheknotholeIIIwithpressmovetocompresstights,thefixedpositionwithclipthetightorginationsimple,convenienceanddependable.ThethirdpartisthetongstoadoptPro/engineercompletingtostirtheforkshapeprimarily.Amongthemprimarilyfinishedtheprocessofdrawingofthestirtheforkindetail.KeywordsstirtheforkPro/engineerCAPPIV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

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