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本科学生毕业设计基于PRO/E的轻型汽车曲轴的工艺规程编制及改进THEGRADUATIONDESIGNFORBACHELORSDEGREEBASEDONPRO/EOFTHELIGHTVEHICLECRANKSHAFTPROCESSESTABLISHMENTANDIMPROVEMENTCANDIDATEWANGLEISPECIALTYVEHICLEENGINEERINGCLASSBW058SUPERVISORASSOCIATEPROFZHANGDESHENGHEILONGJIANGINSTITUTEOFTECHNOLOGY200906HARBINI摘要曲轴是发动机中最重要、最昂贵的零件之一，它的尺寸加工精度影响着发动机动力，并且在很大程度上影响着发动机的性能和可靠性，必须在加工上正确选择曲轴的加工工艺路线，以求获得满意的技术经济效果。本设计是对轻型汽车曲轴进行工艺规程编制，随着现在设计加工制造技术的发展，曲轴结构及材料及加工手段等也在不断发展，确定加工工艺与装夹方案及设计，从而达到对曲轴在发动机运转的原理与工况的了解，并对曲轴构造与加工工艺进一步更深了解；已知曲轴毛坏尺寸和标准尺寸。利用CAD软件绘制零件图，然后运用PRO/E软件建立三维模型，编制曲轴的加工工艺。关键词汽油机；曲轴；加工工艺；AUTOCAD；PRO/E。IIABSTRACTENGINECRANKSHAFTISTHEMOSTIMPORTANTANDONEOFTHEMOSTEXPENSIVEPARTS,ANDITSSIZEAFFECTSTHEMACHININGPRECISIONENGINEPOWER,ANDTOALARGEEXTENTAFFECTTHEENGINEPERFORMANCEANDRELIABILITY,MUSTBETHECORRECTCHOICEINTHEPROCESSINGOFTHEPROCESSINGLINEOFTHECRANKSHAFTINORDERTOOBTAINASATISFACTORYTECHNICALANDECONOMICEFFECTSTHEDESIGNISALIGHTVEHICLEORDERPROCESSTOTHEPREPARATIONOFTHECRANKSHAFT,WITHTHEDESIGNANDPROCESSINGTECHNOLOGYISTHEDEVELOPMENTOFTHECRANKSHAFTSTRUCTUREANDMATERIALSANDPROCESSINGARETHECONTINUOUSDEVELOPMENTOFMEANSTODETERMINETHEPROCESSINGTECHNOLOGYANDDESIGNANDFIXTURINGPROGRAMS,SOASTOACHIEVEONTHECRANKSHAFTINTHEPRINCIPLEOFOPERATIONOFTHEENGINEOPERATINGCONDITIONSANDTHEUNDERSTANDINGOFTHECRANKSHAFTSTRUCTUREANDABETTERUNDERSTANDINGOFFURTHERPROCESSING；KNOWNBADHAIRCRANKSHAFTSIZEANDSTANDARDSIZEPARTSUSINGCADSOFTWARE,DRAWINGMAPS,ANDTHENTHEUSEOFPRO/ESOFTWARETOESTABLISHTHREEDIMENSIONALMODEL,THEPREPARATIONPROCESSOFTHECRANKSHAFTKEYWORDSGASOLINEENGINE；CRANKSHAFT；DESIGN；AUTOCAD；PRO/E
