涪江机器厂职工大学2008级数控专业毕业设计（论文）课题轴类零件的加工及夹具设计姓名廖继建指导教师刘小倩2011年3月10日摘要轴类零件是机器中经常遇到的典型零件之一。它在机械中主要用于支承齿轮、带轮、凸轮以及连杆等传动件，以传递扭矩。按结构形式不同，轴可以分为阶梯轴、锥度心轴、光轴、空心轴、曲轴、凸轮轴、偏心轴、各种丝杠等轴的长径比小于5的称为短轴，大于20的称为细长轴，大多数轴介于两者之间；轴用轴承支承，与轴承配合的轴段称为轴颈。轴颈是轴的装配基准，它们的精度和表面质量一般要求较高。根据零件的结构及其功能，运用定位夹紧的知识完成了夹具设计。关键词：轴类零件、轴颈、夹具AbstractThemachineshaftisoftenencounteredinoneofthetypicalcomponents.Itismainlyusedforsupportinmechanicalgears,pulleys,camsandconnectingrodsandothertransmissionparts,totransfertorque.Differentformsaccordingtothestructure,theaxiscanbedividedintosteppedshaft,taperspindle,axis,hollowshaft,crankshaft,camshaft,eccentricshafts,allkindsofscrewshaftsuchasshortaxisaspectratiooflessthan5largeknownastheslendershaft20,mostshaftinbetween;shaftbearingsbearing,andbearingwiththeshaftsegmentcalledthejournal.Journalistheaxisoftheassemblybase,andtheirgeneralrequirementsforprecisionandhighsurfacequality.Accordingtopartsofthestructureandfunction,usingtheknowledgeoflocatingandclampingfixturedesigncompleted.Keywords：Shaft,journal,fixtures目录第一章轴类零件技术要求......................................................................11、尺寸精度........................................................................................12、几何形状精度................................................................................13、相互位置精度..............................................................................14、表面粗糙度..................................................................................1第二章轴类零件的毛胚和材料..............................................................21轴类零件的毛胚...............................................................................22轴类零件的材料...............................................................................2第三章轴类零件一般加工要求及方法..................................................31轴类零件加工工艺规程注意点.......................................................32轴类零件加工的技术要求...............................................................33轴类零件的热处理...........................................................................4第四章轴类零件工艺路线......................................................................51、传承轴图样分析............................................................................62、确定毛坯........................................................................................73、确定主要表面的加工方法..........................................................74、确定定位基准................................................................................75、划分阶段........................................................................................76、热处理工序安排............................................................................87、加工尺寸和切削用量....................................................................88、拟定工艺过程..............................................................................8第五章细长轴加工工艺特点..................................................................
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