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减速机机体零件机械加工工艺及粗铣下平面夹具设计论文[带图纸].doc

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减速机机体零件机械加工工艺及粗铣下平面夹具设计论文[带图纸].doc

编号无锡太湖学院毕业设计(论文)题目减速机机体零件机械加工工艺及专用夹具设计信机系机械工程及自动化专业学号学生姓名指导教师(职称副教授)(职称)2013年5月25日无锡太湖学院本科毕业设计诚信承诺书本人郑重声明所呈交的毕业设计减速机机体零件机械加工工艺及专用夹具设计是本人在导师的指导下独立进行研究所取得的成果,其内容除了在毕业设计中特别加以标注引用,表示致谢的内容外,本毕业设计不包含任何其他个人、集体已发表或撰写的成果作品。班级机械91学号0923032作者姓名2013年5月25日摘要在生产过程中,使生产对象(原材料,毛坯,零件或总成等)的质和量的状态发生直接变化的过程叫工艺过程,如毛坯制造,机械加工,热处理,装配等都称之为工艺过程。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。箱体零件是一种典型零件,其加工工艺规程和工装设计具有典型性。该箱体零件结构复杂,零件毛坯采用铸造成形。在加工过程中,采用先面后孔的加工路线,以保证工件的定位基准统一、准确。为了消除切削力、夹紧力、切削热和因粗加工所造成的内应力对加工精度的影响,整个工艺过程分为粗、精两个阶段。通过被加工零件的分析完成了机械加工工艺的设计及各加工工序机动时间的计算。根据箱体零件的结构及其功能,运用定位夹紧的知识完成了夹具设计。关键词工序工位工步加工余量IVAbstractEnableproducingthetargetinprocessofproductionrawmaterials,theblank,stateofqualityandquantityonpartbecomealwaystakeplacedirectcourseofchangeaskcraftcourse,iftheblankismade,machining,heattreatment,assembleetc.andcallitthecraftcourse.Inthecourseofmakingthecraft,isitconfirmeveryerectorlocationandworkerstepthatprocessneedthisofprocesstowant,thelocomotiveofprocessing,thisprocess,andtheenteringthegivingamountofthelathe,cutdepth,therotationalspeedofthemainshaftandspeedofcutting,thejigofthisprocess,thecutterandmeasuringtool,aonehundredsheetsofnumberoftimesstillleavesandaonehundredsheetsoflengthleaves,calculatebasictimeofthisprocess,auxiliarytimeandservicetimeofplaceofworkingfinally.Thisboxmachineelementistypical,themanufacturingprocessandtoolingdesignofitistypical.Thestructureofthisboxmachineelementiscomplicated,themachineelementsblankadoptcastingshape.Intheprocessofmanufacture,inordertoensurethelocationdatumaccurateandunity,Iadoptthemanufacturinglinefromfacetohole.Inordertoclearawaytheinfluenceformachiningaccurateofinternalstress,cuttingforce,clampingforce,heatincuttingfromcoarsemanufacturing,thewholemanufacturingprocessismadeofcoarseandaccuratemanufacturing.Partswereprocessedthroughtheanalysisofthecompletemachiningprocessdesignandthemanufacturingprocessesformobiletimecalculations.Accordingtotheboxcomponentsandthefunctionandstructure,theuseoftheknowledgepositioningclampcompletedthefixturedesign.KeywordsTheprocessworkeroneworkersstepthesurplusofprocessing目录摘要...........................................................................................................................................IIIAbstract.........................................................................................................................................IV目录............................................................................................................................................V1绪论.............................................................................................................................................11.1本课题的研究内容和意义...............................................................................................11.2国内外的发展概况...........................................................................................................11.3本课题应达到的要求.......................................................................................................12零件工艺的分析.........................................................................................................................22.1确定毛坯的制造形式.......................................................................................................22.2箱体零件的结构工艺性...................................................................................................23拟定箱体加工的工艺路线.........................................................................................................33.1定位基准的选择...............................................................................................................33.2加工路线的拟定...............................................................................................................34机械加工余量,工序尺寸及毛坯尺寸的确定.........................................................................64.1机体...................................................................................................................................64.1.1毛坯的外廓尺寸.................................................................................................64.1.2主要平面加工的工序尺寸及加工余量.............................................................64.1.3加工的工序尺寸及加工余量.............................................................................64.2箱体...................................................................................................................................64.2.1主要平面加工的工序尺寸及加工余量.............................................................64.2.2加工的工序尺寸及加工余量.............................................................................75确定切削用量及基本工时.........................................................................................................85.1机座...................................................................................................................................85.1.1工序5粗铣箱体下平面.........................................................................................85.1.2工序6粗铣箱体分割面.........................................................................................85.1.3工序7磨箱体分割面.............................................................................................95.1.4工序8钻孔...........................................................................................................105.1.5工序9钻孔...........................................................................................................125.1.6工序10钻孔.........................................................................................................145.2机体.................................................................................................................................165.2.1工序2钻,铰2个直径为6mm深28mm的孔................................................165.2.2工序4半精铣前后端面.......................................................................................175.2.3工序5半精铣左右端面.......................................................................................185.2.4工序6精前后铣端面...........................................................................................195.2.5工序7精左右铣端面...........................................................................................205.2.6工序9粗镗...........................................................................................................215.2.7工序10粗镗.........................................................................................................21

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