气门摇杆轴支座零件机械加工工艺及其典型夹具设计

本科毕业设计(论文)题目：气门摇杆轴支座零件机械加工工艺及其典型夹具设计气门摇杆轴支座零件机械加工工艺及其典型夹具设计摘要气门摇杆轴支座是柴油机一个重要零件，是柴油机摇杆座的结合部。本毕业设计在气门摇杆轴支座工艺规程设计过程中，详细的分析了摇杆轴支座的加工工艺，通过工艺方案的比较与分析得到了符合技术要求的工序，形成了机械加工工艺过程卡和机械加工工序卡。并完成了铣削和车削以及钻孔夹具的设计，阐述了定位方案的选择、夹紧方案的确定、夹具体设计，运用AutoCAD完成了此典型夹具的装配图和夹具体的零件图。本设计的加工工艺合理，夹具可行、高效、省力，能满足零件的加工要求，保证其加工质量。关键词：气门摇杆轴支座；机械加工；加工工艺；典型夹具BearingPartsMachiningProcessValveRockerShaftandItsTypicalFixtureDesignAbstractValverockershaftbearingisanimportantpartofthedieselengine,isacombinationofdieselenginerockerseat.Thisgraduationdesigninvalverockershaftbearingprocessdesignprocess,adetailedanalysisoftheprocessoftherockershaftbearing,meetthetechnicalrequirementsoftheprocesswasobtainedthroughthecomparisonandanalysisoftheprocess,formingamachiningprocesscardandmachiningprocesscard.Andfinishmillingandturninganddrillingfixturedesign,elaboratedthelocalizationschemeselection,clampingscheme,clampdesign,AutoCADisusedtocompletetheassemblydrawingofthistypicalfixtureandclamppartsmapspecific.Processingtechnologyofthedesignisreasonable,feasible，highefficiency,laborsavingfixture,canmeettheprocessingrequirementsofparts，ensurethemachiningquality.KeyWords:valverockershaftbearing;mechanicalprocessing;processingtechnology;typicaljigI目录1绪论....................................................................................................................11.1题目背景及研究意义...................................................................................11.2国内外相关研究情况...................................................................................21.3本课题主要内容和拟采用的研究方案.......................................................32零件的分析......................................................................................................52.1零件的作用...................................................................................................52.2零件的结构分析...........................................................................................52.2零件的工艺分析...........................................................................................62.3零件的生产类型...........................................................................................63机械加工工艺规程设计..............................................................................83.1确定毛坯的制造形式...................................................................................83.2定位基准的选择...........................................................................................83.3制定机械加工工艺路线...............................................................................93.4工艺方案的比较与分析...............................................................................93.5机械加工余量、工序尺寸及毛坯尺寸的确定.........................................103.6选择加工设备及刀、夹、量具..................................................................113.7确定切削用量及基本工时..........................................................................114铣50底面的夹具设计...............................................................................194.1铣床夹具设计特点.....................................................................................194.2定位部分设计.............................................................................................204.2.1问题的提出..........................................................................................204.2.2定位基准点的选择..............................................................................204.2.3定位元件的设计..................................................................................204.3切削力及夹紧力的计算.............................................................................204.4定向键与对刀装置设计.............................................................................224.5夹具设计及操作简要说明.........................................................................235粗车、半精车、精车Φ32两端面的夹具设计...........................245.1车床夹具设计特点.....................................................................................245.2定位部分设计.............................................................................................255.2.1问题提出..............................................................................................255.2.2定位基准的选择..................................................................................255.2.3定位元件的设计..................................................................................25II5.3切削力和夹紧力的计算.............................................................................255.4夹具设计及简要操作说明.........................................................................256钻2×Φ13通孔夹具设计...............................................................266.1钻床夹具的设计特点...................................................................................266.2问题的提出...................................................................................................276.3定位基准的选择...........................................................................................276.4定位元件的设计...........................................................................................276.5切削力和夹紧力的计算...............................................................................