学校代码：学号：HefeiUniversity本科毕业设计（论文）BACHELORDISSERTATION论文题目：基于UG变速齿轮箱体数控加工生产线设计学科专业：机械设计制造及自动化作者姓名：导师姓名：完成时间：2012.5.202012年5月20日基于UG变速齿轮箱体数控加工生产线设计摘要加工中心简称CNC。是一种由机械设备与数控系统组成的使用于加工复杂形状工件的高效率自动化机床。加工中心的突出特点为加工工序集中和能够实现自动换刀，对于形状复杂、精度要求较高和要求换刀频繁的零件的加工能够提高生产效率、缩短生产周期以获得较好的经济效果。本次设计针对的零件为三星齿轮箱体，形状复杂、有一定的精度要求并且加工工序较多，因而选择在加工中心上加工很合适。设计首先用UG软件绘制零件图、毛坯图，然后对零件进行分析，确定合适的加工工序，根据工序选择相应的定位基准，制定加工工艺，选择切削用量并计算基本工时，用AutoCAD绘制加工工艺综合卡，用UG导出其中一道工序的数控加工G代码，选择两道加工工序设计夹具并用CAD绘制夹具装配图。关键词：三星齿轮箱体；工艺；工序；加工中心；夹具UG-basedDesignofCNCMachiningProductionLineoftheGearBoxABSTRACTProcessingcenterreferredtoasCNC.Composedbymechanicalequipmentandnumericalcontrolsystemsusedforprocessingcomplexshapeofworkpiece,CNCisakindofhighefficiencyautomationmachinetools.Processingoperationsfocusedandabletoachieveautomatictoolchangeisaprominentcharacteristicofthemachiningcenter.Whenusedtoprocessworkpieceswhichareofcomplexshape,ofhighaccuracyandrequireforfrequenttoolchange,itcanimproveproductionefficiency,shortentheproductioncycleinordertoobtainbettereconomiceffects.Thisdesignisforpart——Nortongearboxwhohavecomplexshape,certaindegreeofaccuracyandmoreprocessingprocess.Soitisrelativelyappropriatetoprocessintheprocessingcenter.ThefirststepofthisdesignistouseUGtodrawthepartdrawing,blankdrawingandprocessworkprefacediagram.Thenanalysingthepartsoastodetermineappropriatemanufacturingprocedure,usingtheUGsoftwareexportprocedureofNCmachiningprocess,selectingtheappropriatelocationbasistodevelopaprocessroute,choosingprocessingequipmentandtools,fixtures,measuring,andcalculatingeachprocedureofthebasicworkinghours,drawingprocessingprocesscard.FinalizethefixturedesignoftwoprocessandcompletethefixturedrawingswithCAD.KEYWORD:Nortongearbox；technology；process；processingcenter;fixture目录前言....................................................................................................................................................IV第1章零件分析..................................................................................................................................11.1.零件作用分析...........................................................................................................................11.2.零件工艺分析...........................................................................................................................2第2章确定毛坯尺寸.........................................................................................................................32.1.确定毛坯尺寸...........................................................................................................................3第3章工艺过程设计..........................................................................................................................43.1.定位基准的选择.......................................................................................................................43.2.制定工艺路线......................
