偏心工件加工及夹具设计

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1、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、凸轮以及连杆等传动件，按照结构类型不同，轴可以分为很多种如：阶梯轴、锥度心轴、空心轴、凸轮轴等，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。根据零件的结构类型、及其功能，运用定位夹紧的知识从而完成了夹具设计。关键词：轴类零件、轴颈、夹具、工艺分析1Theshaftpartsareoneofthetypicalpartsofthemachine..Itinthemachineryismainlyused

2、tosupportgear,camandconnectingrodsandothertransmissionparts,accordingtothedifferentstructuretypesofaxiscanbedividedintomanytypessuchassteppedshaft,tapermandrel,ahollowshaft,camshaft,longshaftdiameterratioislessthan5forshortaxis,morethan20arereferredastheslendershaft,mostoftheshaftinbetween,shaftbea

3、ring,andbearingwiththeshaftsegmentknownastheaxlejournal.Theaxisofthejournalistheaxisoftheassemblyreference,andtheiraccuracyandsurfacequalityaregenerallyhigher.Accordingtothestructuretypeandfunctionofparts,thefixturedesignisaccomplishedbyusingtheknowledgeofpositioningandclamping..1目录目录……………………………………

4、…………………1偏心工件的加工一.问题的引出...........................................................................................................2二、垫片厚度与垫片形状的选择.........................................................................3三、偏心工件的车削........................................................................

5、.......................4四、加工偏心工件时容易产生的问题及应注意的事项.......................................5.6五、结语..................................................................................................................6偏心工件夹具设计一.偏心夹具的设计思路..............................................7二.偏心夹具结构分析...............

6、................................8三.线切割找正和加工..........................................9.10.11四.锁紧装置结构特点...............................................12五.夹具的应用...............................................13结束语.........................................................................................

7、...........................14致谢词....................................................................................................................1514偏心工件的加工及夹具设计对偏心工件车削加工的研究一、问题的引出人们通常把圆柱面轴线平行且不相重合的零件称为偏