空气压缩机曲轴的加工工艺.

辽宁科技学院（2009届）本科毕业设计题目：空气压缩机曲轴的加工工艺规程及夹具设计专题：专业：机械设计班级：机电BS052姓名：汤峰学号：0211205222指导教师：高淑杰说明书页，图纸张，专题页，译文页辽宁科技学院本科生毕业设计(论文)第I页空气压缩机曲轴的加工工艺规程及夹具设计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、精加工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40°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，夹具设计辽宁科技学院本科生毕业设计(论文)第II页Aircompressorcrankcomponentsmachine-finishingcraftAbstractThisgraduationprojectdutyistothe3L-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.Keywords:crank,processingcraft,jigdesign辽宁科技学院本科生毕业设计(论文)第III页目录1绪论............................................................................................................................11.1课题背景..........................................................................................................11.2立题的目的.......................................................................................................11.3综述及设计内容、意义...................................................................................11.3.1综述........................................................................................................11.3.2设计内容、意义.....................................................................................32零件分析....................................................................................................................52.1零件的作用.......................................................................................................52.2零件的工艺分析...............................................................................................52.2.1以拐径为Ø95mm为中心的加工表面.................................................52.2.2以轴心线两端轴为中心的加工表面.....................................................52.3零件加工的主要问题和工艺过程设计分析...................................................63工艺规程设计............................................................................................................93.1确定毛坯的制造形式.......................................................................................93.2基面的选择.......................................................................................................93.2.1粗基准选择............................................................................................93.2.2精基准的选择........................................................................................93.3制定工艺路线...................................................................................................93.4机械加工余量、工序尺寸及毛坯尺寸的确定.............................................123.5确定切削用量及基本工时.............................................................................173.6时间定额计算及生产安排............................................................................424专用夹具设计..........................................................................................................544.1铣曲拐端面夹具设计.....................................................................................544.1.1定位基准的选择...................................................................................544.1.2定位元件的设计...................................................................................544.1.3铣削力与夹紧力计算...........................................................................554.1.4对刀块和塞尺设计...............................................................................565经济性与可行性分析..............................................................................................58辽宁科技学院本科生毕业设计(论文)第IV页结论..............................................................................................................................59致谢..............................................................................................................................60参考文献......................................................................................................................61附录A..........................................................................................................................62附录B..............................................