攀枝花学院本科毕业设计拨叉（12-07-05）加工工艺及夹具设计学生姓名：彭帆学生学号：200310621037院（系）：机电工程学院年级专业：03级机械设计制造及其自动化指导教师：卢宗彪副教授二〇〇七年六月摘要此次设计是对拨叉零件的加工工艺和夹具设计，其零件为锻件，具有体积小，零件复杂的特点，由于面比孔易加工，在制定工艺规程时，就先加工面，再以面为基准来加工其它，其中各工序夹具都采用专用夹具，特别的对于加工大头孔、槽和钻小头孔斜面小孔的工序中，选一面两销的定位方式，并以操作简单的手动夹紧方式夹紧，其机构设计简单，方便且能满足要求。关键词拨叉，加工工艺，专用夹具，设计ABSTRACTThisdesignistodialsforksthecomponentstheprocessingcraftandthejigdesign,itscomponentsaretheforging,hasthevolumetobesmall,componentscomplexcharacteristic,Becausethesurfaceiseasierthantheholetoprocess,whenformulationtechnologicalprocess,firstthemachinedsurface,thenprocessesothertakethesurfaceasthedatum,Inwhichvariousworkingproceduresjigallusestheunitclamp,specialregardingprocessesthebigendofhole,thetroughanddrillsthecapitellumholeinclineeyeletintheworkingprocedure,Chooseslocatemodewhichtwosellsatthesametime,andoperatesthesimplemanualclampwayclamp,itsorganizationdesignissimple,theconveniencealsocansatisfytherequest.Keywords：Dialsthefork,theprocessingcraft,unitclamp,design目录摘要·····························································································ABSTRACT····················································································Ⅱ1绪论··························································································12拨叉的分析····················································································22.1拨叉的工艺分析·······················································································22.2拨叉的工艺要求·······················································································23工艺规程设计··················································································53.1加工工艺过程··························································································53.2确定各表面加工方案·················································································53.2.1影响加工方法的因素···········································································53.2.2加工方案的选择·················································································63.3确定定位基准·····················...
