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CA6140机床后托架加工工艺及夹具设计毕业论文.doc

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CA6140机床后托架加工工艺及夹具设计毕业论文.doc

攀枝花学院本科毕业设计(论文)CA6140车床后托架加工工艺及夹具设计学生姓名学生学号院(系)机电工程学院年级专业指导教师二〇〇六年六月攀枝花学院本科毕业设计(论文)摘要I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。关键词工序,工艺,工步,加工余量,定位方案,夹紧力攀枝花学院本科毕业设计(论文)AbstractIIABSTRACTEnableproducingthetargetinprocessofproductionrawmaterials,theblank,stateofqualityandquantityonpartbecomealwaystakeplacedirectcourseofchangeaskcraftcourse,iftheblankismade,machining,heattreatment,assembleetc.andcallitthecraftcourse.Inthecourseofmakingthecraft,isitconfirmeveryerectorlocationandworkerstepthatprocessneedthisofprocesstowant,thelocomotiveofprocessing,thisprocess,andtheenteringthegivingamountofthelathe,cutdepth,therotationalspeedofthemainshaftandspeedofcutting,thejigofthisprocess,thecutterandmeasuringtool,aonehundredsheetsofnumberoftimesstillleavesandaonehundredsheetsoflengthleaves,calculatebasictimeofthisprocess,auxiliarytimeandservicetimeofplaceofworkingfinally.KeywordsTheprocess,workerone,workersstep,thesurplusofprocessing,orientthescheme,clampstrength攀枝花学院本科毕业设计(论文)目录1目录摘要...........................................................................................................................IABSTRACT.................................................................................................................II1CA6140机床后托架加工工艺...............................................................................31.1CA6140机床后托架的工艺分析...............................................................................31.2CA6140机床后托架的工艺要求及工艺分析.............................................................31.2.1CA6140机床后托架的技术要求......................................................................41.3加工工艺过程........................................................................................................41.4确定各表面加工方案..............................................................................................41.4.1在选择各表面及孔的加工方法时,要综合考虑以下因素..................................41.4.2平面的加工.....................................................................................................41.4.3孔的加工方案..................................................................................................41.5确定定位基准........................................................................................................51.5.1粗基准的选择.................................................................................................51.5.2精基准选择的原则..........................................................................................61.6工艺路线的拟订.....................................................................................................61.6.1工序的合理组合..............................................................................................71.6.2工序的集中与分散..........................................................................................71.6.3加工阶段的划分..............................................................................................81.6.4加工工艺路线方案的比较................................................................................91.7CA6140机床后托架的偏差,加工余量,工序尺寸及毛坯尺寸的确定.....................121.7.1毛坯的结构工艺要求.....................................................................................121.7.2CA6140机床后托架的偏差计算......................................................................131.8确定切削用量及基本工时(机动时间)................................................................161.8.1工序1粗、精铣底面..................................................................................161.8.2工序2粗、半精、精镗CA6140侧面三杠孔.................................................181.8.3工序3钻顶面四孔.....................................................................................241.8.4工序4钻侧面两孔.....................................................................................281.9时间定额计算及生产安排.....................................................................................301.9.1粗、精铣底面...............................................................................................301.9.2镗侧面三杠孔...............................................................................................311.9.3钻顶面四孔...................................................................................................322专用夹具设计........................................................................................................342.1铣平面夹具设计...................................................................................................342.1.1研究原始质料...............................................................................................342.1.2定位基准的选择............................................................................................342.1.3切削力及夹紧分析计算.................................................................................342.1.4误差分析与计算............................................................................................35

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