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后托架零件的加工工艺及铣底面夹具设计论文[带图纸].DOC

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后托架零件的加工工艺及铣底面夹具设计论文[带图纸].DOC

西安文理学院物理与机械电子工程学院本科毕业设计(论文)题目后托架零件的加工工艺设计专业班级机械设计制造及其自动化08级2班学号08102080220学生姓名常峰指导教师贾建利设计所在单位西安文理学院2012年5月后托架零件的加工工艺设计摘要在生产过程中,使生产对象(原材料,毛坯,零件或总成等)的质和量的状态发生直接变化的过程叫工艺过程,如毛坯制造,机械加工,热处理,装配等都称之为工艺过程。在制定工艺过程中,要确定各工序的安装工位和该工序需要的工步,加工该工序的机车及机床的进给量,切削深度,主轴转速和切削速度,该工序的夹具,刀具及量具,还有走刀次数和走刀长度,最后计算该工序的基本时间,辅助时间和工作地服务时间。本文对CA6140车床后托架进行了结构和工艺分析,确定了机械加工工艺路线,制订出了零件的制造工艺方案和机械加工工艺规程,并设计一套铣床夹具。关键词工序,加工余量,定位方案,铣床夹具DesignofFlangePartsProcessingAbstractWiththedevelopmentofmechanicalmanufacturingandsciencetechnology,thecontentsandappearanceofthemechanicalmanufacturingprocessesareconstantlychanging,whichgeneralprocessisoptimizing,andnewprocessingmethodsemerging,anddeveloping.Technologyisthestudyofmachiningfixturedesigntechnologyandtechnologybaseddisciplines,shouldbeproductivepractice.Theissueisthegraduationofflangeandfixturedesignprocess,thefollowingkeyelementsThispapermainlydiscussestheprocessesoftheflangeandthefixturedesignfortheprocessofthemainhole.Themaincontentsaredesigningprocessesspecification,drawingpartsandassemblydrawings,designingthefixtureofdrillingφ6h9mmandwritingthesis.Theflangeisoneofwidelyusedpartsinindustry,andtheproductionislarge.Inordertoensureproductquality,improveprocessingefficiency,Idesigntheoptimizationofprocessestomeettheproductionrequirements,whichhasmorepractical.KeywordsFlangeProcessingTechnologyFixtureDesign.目录第一章绪论..........................................................................................................................................11.1选题的目的与意义...................................................................................................................11.2本课题在国内外发展趋势和影响............................................................................................11.3本课题主要讨论问题...............................................................................................................2第二章CA6140机床后托架加工工艺..................................................................................................32.1CA6140机床后托架的工艺分析..............................................................................................32.2CA6140机床后托架的工艺要求..............................................................................................32.2.1CA6140机床后托架的技术要求..................................................................................32.3加工工艺过程...........................................................................................................................42.4确定各表面加工方案...............................................................................................................42.4.1在选择各表面及孔的加工方法时,要综合考虑以下因素.......................................42.4.2平面的加工...................................................................................................................42.4.3孔的加工方案................................................................................................................52.5确定定位基准...........................................................................................................................52.5.1粗基准的选择...............................................................................................................52.5.2精基准选择的原则.......................................................................................................52.6工艺路线的拟订.......................................................................................................................62.6.1工序的合理组合............................................................................................................62.6.2工序的集中与分散.......................................................................................................72.6.3加工阶段的划分...........................................................................................................72.6.4加工工艺路线方案的比较...........................................................................................82.7CA6140机床后托架的偏差,工序尺寸及毛坯尺寸的确定................................................102.7.1毛坯的结构工艺要求.................................................................................................102.7.2CA6140机床后托架的偏差计算................................................................................102.8确定切削用量及基本工时(机动时间).............................................................................122.8.1工序1粗、精铣底面..............................................................................................122.8.2工序2粗、半精、精镗CA6140侧面三杠孔........................................................142.9时间定额计算及生产安排.....................................................................................................162.9.1粗、精铣底面.............................................................................................................16第三章专用夹具设计.........................................................................................................................173.1铣平面夹具设计.....................................................................................................................173.1.1研究原始质料.............................................................................................................173.1.2定位基准的选择.........................................................................................................173.1.3切削力及夹紧分析计算.............................................................................................173.1.4误差分析与计算.........................................................................................................183.1.5夹具设计及操作的简要说明.....................................................................................19结论....................................................................................................................................................20致谢....................................................................................................................................................21参考文献................................................................................................................................................22附录.......................................................................................................................错误未定义书签。

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