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凸轮轴加工及其仿真论文.doc凸轮轴加工及其仿真论文.doc

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西安文理学院机械电子工程系本科毕业设计(论文)题目凸轮轴加工及其仿真专业班级机电08级二班学号08102080223学生姓名李伟指导教师戴君/田浩设计所在单位西安文理学院2012年5月西安文理学院毕业设计(论文)凸轮轴加工及其仿真摘要:典型零件凸轮轴工件上圆形偏心部分的加工比较复杂。对于加工车间来说,优化这个加工工序可以提高企业的生产效率。凸轮轴加工工序的优化,取决于夹具的优化及工序安排的合理性。凸轮轴工件在机械加工中比较常见,常见的车削加工方法有三爪车削法、四爪车削法、花盘车削法等。像这些方法多用于普通车床上,偏心部分的偏心距采用百分表找正。缺点是:加工复杂、效率低、互换性和精度难保证。本文采用凸轮轴偏心部位车削加工的另一种方法——专用夹具车削法。专用夹具车削法,可用于数控车机床。文中涉及到了凸轮轴的加工工序、专用夹具的设计、数控加工编程等内容。关键字:数控车床凸轮轴偏心套筒.西安文理学院本科毕业设计(论文)TheCamshaftProcessingandSimulationAbstract:Typicalpartsofwork-piececirculareccentricCAMshaftpartsprocessingismorecomplex.Forprocessingworkshop,Optimizethemachiningprocessescanincreasetheproductionefficiency.Thecamshaftprocesses,dependingontheoptimizationofprocessoptimizationandfixturearrangementofrationality.Inmachiningcamshaftwork-pieceincommon,Commonmachiningmethodshavethreeclawsturning,fourturningmachiningmethod,facile,etc.Thesemethodsuseonmuchlikelytheconventionallathe,theeccentricpart'seccentricityusesthedialgaugetoadjust.Theshortcomingis:Processes,theefficiencytobelowcomplex,theinterchangeabilityandtheprecisiondifficulttoguarantee.Thesemethodsuseonmuchlikelytheconventionallathe,theeccentricpart'seccentricityusesthedialgaugetoadjust.Theshortcomingis:Processes,theefficiencytobelowcomplex,theinterchangeabilityandtheprecisiondifficulttoguarantee[16][17].Keywords:NCLatheCamShaftEccentricSleeve目录-1-目录第一章绪论............................................................................................................................-1-1.1数控加工的发展趋势......................................................................................................-1-1.2数控加工技术常用的软件..............................................................................................-2-1.3此课题的意义.................................................................................................................-3-第二章凸轮轴零件分析........................................................................................................-4-2.1凸轮轴的结构介绍..........................................................................................................-4-2.2凸轮轴加工要求和预计加工难度..................................................................................-5-2.2.1加工要求...............................................................................................................-5-2.2.2偏心圆的加工........................................................................................................-5-2.2.3深孔加工................................................................................................................-6-2.2.4轴的要求................................................................................................................-6-2.3本章小结.........................................................................................................................-6-第三章夹具设计....................................................................................................................-7-3.1夹具的工作原理..............................................................................................................-7-3.2数控车床夹具设计..........................................................................................................-7-3.3专用夹具——偏心套设计..............................................................................................-8-3.3.1专用夹具分析........................................................................................................-9-3.3.2专用夹具设计........................................................................................................-9-3.3.3专用夹具车削法的优点......................................................................................-10-3.4一般套筒设计...............................................................................................................-10-3.5本章小结........................................................................................................................-11-第四章机械加工工艺规程的制定.........................................................................................-12-4.1加工工艺路线的分析...................................................................................................-12-4.2凸轮加工工艺分析........................................................................................................-12-4.3加工阶段的划分与工序顺序的安排............................................................................-13-4.4加工工艺路线的拟定....................................................................................................-13-4.4.1备料......................................................................................................................-13-4.4.2铣端面、钻中心孔.............................................................................................-14-4.4.3粗精加工外圆......................................................................................................-14-4.4.4加工轴颈..............................................................................................................-15-4.4.5粗精加工沟槽......................................................................................................-15-4.4.6六方和键槽..........................................................................................................-16-4.4.7偏心轮和螺纹孔加工..........................................................................................-19-4.5本章小结........................................................................................................................-20-第五章......................................................................................................................................-21-5.1键槽的仿真...................................................................................................................-21-5.1.1Pro/Engineer软件............................................................................................-21-5.1.2Pro/Engineer仿真............................................................................................-21-
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