L-108空气压缩机曲轴零件的机械加工工艺及夹具设计

各类毕业设计课程定做Q号是1714879127该论文含配套的图纸(需购买)毕业设计课程定做Q*Q=1714879127毕业设计3L-10/8空气压缩机曲轴零件的机械加工工艺及夹具设计学生姓名：学生学号：院院系）：机电工程学院年级专业：机械制造及自动化1班指导教师：二〇〇七年六月攀枝花学院本科毕业设计目录毕业设计课程定做Q*Q=1714879127目录摘要············································································································IABSTRACT·····································································································I1绪论·······································································································12零件分析····································································································22.1零件的作用·····························································································22.2零件的工艺分析·······················································································22.3零件加工的主要问题和工艺过程设计分析·····················································23工艺规程设计·····························································································63.1确定毛坯的制造形式················································································63.2基面的选择·····························································································63.2.1粗基准选择···················································································63.2.2精基准的选择················································································63.3制定工艺路线··························································································63.4机械加工余量、工序尺寸及毛坯尺寸的确定··················································83.5确定切削用量及基本工时·········································································123.6时间定额计算及生产安排·········································································324专用夹具设计····························································································414.1加工曲拐上端面油孔夹具设计···································································414.1.1定位基准的选择·············································································414.1.2切削力的计算与夹紧力分析·····························································414.1.3夹紧元件及动力装置确定································································424.1.4钻套、衬套及夹具体设计································································434.1.5夹具精度分析················································································454.2加工曲拐上侧面油孔夹具设计···································································464.2.1定位基准的选择·············································································464.2.2切削力的计算与夹紧力分析·····························································464.2.3夹紧元件及动力装置确定································································474.2.4钻套、衬套及夹具体设计································································484.2.5夹具精度分析················································································494.3铣曲拐端面夹具设计···············································································504.3.1定位基准的选择·············································································504.3.2定位元件的设计·············································································504.3.3铣削力与夹紧力计算·······································································514.3.4对刀块和塞尺设计··········································································524结论······································································································54参考文献········································································································55致谢············································································································56攀枝花学院本科毕业设计摘要I摘要此次毕业设计任务是对3L-10/8空气压缩机曲轴零件的机械加工工艺、夹具的设计,在曲轴零件的加工工艺过程中轴与轴中心线之间要有位置要求,以毛坯轴两端定位先加工两中心孔,以两端中心孔定位再粗、精加工各轴的表面，然后以粗、精后的两轴径定位钻螺纹、铣键槽和铣曲拐端面，采用专用夹具加工两斜油孔，最后粗、精磨各轴。在夹具的设计过程中，主要以V形块和支承板来定位，靠直压板和弹簧来夹紧，钻拐径两孔应采用长型快换钻套，在钻拐径倾斜30的孔时采用平面倾斜的夹具体，在钻拐径倾斜040的孔时使用的是卧式钻床，铣面时2个V形块与铣刀不能干涉，因此V形块高度要降低，夹具设计要方便、简单。关键词曲轴，加工工艺，夹具设计。攀枝花学院本科毕业设计ABSTRACTIIABSTRACTThisgraduationprojectdutyistothe3L-10/8aircompressorcrankcomponentsmachine-finishingcraft,thejigdesign,betweenthecrankcomponentsprocessingtechnologicalprocessmiddleaxleandtheaxlemusthavethepositionrequest,processestwocenterboresfirstbythesemifinishedmaterialsaxisbothsideslocalization,bybothsidescenterborelocalizationagainthick,precisionworkvariousaxessurface.Thenafterthick,theessencetwoaxlediameterlocalizationdrillsthethread,thekeyseatandthemillcrankendsurface.,usestheunitclamptoprocesstwoslantingoilholes,finallythick,correctgrindingvariousaxes.Inthejigdesignprocess,mainlylocatesbyVshapeblockandthesupportplate,dependsonthestraightclampandthespringclamps,drillsturnsdiametertwotobesupposedtouselongtradesquicklydrillsthewrap,whendrillsturnsthediameterinclineholeusestheplaneinclinethejigbody,whendrillsturnsthediameterinclineholeusesisthehorizontal-typedrillingmachine,whenfacemilling2Vshapeblocksandthemillingcuttercannotinterfere,thereforeVshapeblockaltitudemustreduce,thejigdesignmustbeconvenient,besimple.Keywordscrank,