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减速器箱体机械加工工艺设计及夹具设计论文.doc

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减速器箱体机械加工工艺设计及夹具设计论文.doc

西安文理学院机械电子工程系本科毕业设计(论文)题目减速器箱体机械加工工艺设计及夹具设计专业班级机械设计制造及自动化2班学号学生姓名指导教师设计所在单位2012年5月减速器箱体机械加工工艺设计及夹具设计摘要零件的工艺编制,在机械加工中占有非常重要的地位,零件工艺编制得合不合理,这直接关系到零件最终能否达到质量要求夹具的设计也是不可缺少的一部分,它关系到能否提高其加工效率的问题。因此这两者在机械加工行业中是至关重要的环节。在制定工艺过程中,要确定各工序的安装工位和该工序需要的工步,加工该工序的机车及机床的进给量,切削深度,主轴转速和切削速度,该工序的夹具,刀具及量具,还有走刀次数和走刀长度,最后计算该工序的基本时间,辅助时间和工作地服务时间。夹具与机床的结合,夹具作为机床的一部分,成为机械加工中不可缺少的工艺装备。用夹具装夹工件可以保证加工精度,降低人工等级,提高劳动生产率和降低加工成本,扩大机床工艺范围等作用,使得操作方便、安全。关键词工序,工位,加工余量,定位方案,夹紧力TheSpeedReducerMachiningProcessDesignandFixtureDesignAbstractThePartoftheprocess,inmachiningplaysaveryimportantpartoftheprocess,preparetoreasonableorunreasonable,itdirectlyrelatestothequalityrequirementscouldeventuallyparts,Thedesignoffixtureisbig,itistheindispensablepartinrelationtoimprovetheefficiencyofthemachining.SobothinmechanicalprocessingindustryiscruciallinkInthecourseofmakingthecraft,isitconfirmeveryerectorlocationandworkerstepthatprocessneedthisofprocesstowant,thelocomotiveofprocessing,thisprocess,andtheenteringthegivingamountofthelathe,cutdepth,therotationalspeedofthemainshaftandspeedofcutting,thejigofthisprocess,thecutterandmeasuringtool,aonehundredsheetsofnumberoftimesstillleavesandaonehundredsheetsoflengthleaves,calculatebasictimeofthisprocess,auxiliarytimeandservicetimeofplaceofworkingfinally.Machinefixturewithacombinationfixtureasamachinepartmachiningbecomeanindispensabletechniqueandequipment.Fixturefixturewiththeworkpiecemachiningaccuracycanbeguaranteedtoreduceartificialhierarchy,raiselaborproductivityandreduceprocessingcosts,MachineTechnologytoexpandthescopeoftherole,theoperationisconvenientandsafe.KeywordTheprocessworkeronethesurplusofprocessingorienttheschemeclampstrength目录目录第一章绪言.....................................................................................................................................11.1制造工业的重要性............................................................................................................11.2选题目的和意义................................................................................................................11.3减速器的运用、类型.......................................................................................................11.4本课题在国内外的研究状况及发展趋势........................................................................2第二章零件工艺的分析.................................................................................................................32.1毛坯的制造形式.................................................................................................................32.2零件的工艺要求.................................................................................................................32.2箱体零件的结构工艺性...................................................................................................3第三章箱体的加工工艺.................................................................................................................43.1定位基准的选择................................................................................................................43.1.1精基准的选择.......................................................................................................43.1.2粗基准的选择定义...........................................................................................43.2加工路线的拟定................................................................................................................43.3毛坯尺寸的确定................................................................................................................63.3.1箱盖........................................................................................................................63.2.2箱体........................................................................................................................63.4确定切削用量及基本工时................................................................................................63.4.1箱盖........................................................................................................................63.4.2箱座......................................................................................................................103.4.3箱体.....................................................................................................................16第四章夹具设计.........................................................................................................................244.1问题的提出......................................................................................................................244.2夹具设计.........................................................................................................................244.2.1定位基准的选择.................................................................................................244.2.2夹紧力的确定......................................................................................................244.2.3切削力及夹紧力的计算。.................................................................................244.2.4粗镗时的切削力..................................................................................................254.2.5定位误差的分析与计算.....................................................................................264.2.6气缸的设计与计算..............................................................................................274.3夹紧装置的组成及设计要求..........................................................................................304.3.1动力源..................................................................................................................304.3.2中间传力机构......................................................................................................304.3.3夹紧元件..............................................................................................................314.4镗模导向装置的设计......................................................................................................314.4.1导向支架的布置方式..........................................................................................314.4.2镗套的结构形式..................................................................................................314.4.3镗杆......................................................................................................................314.5夹具结构设计..................................................................................................................32第五章总结与展望.........................................................................................................................335.1总结..................................................................................................................................335.2展望..................................................................................................................................33

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