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大型坡口机夹紧装置设计说明书.doc

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大型坡口机夹紧装置设计说明书.doc

黑龙江科技学院毕业设计(论文)I摘要目前,国内尚无大型节筒坡口加工设备,传统的坡口加工机械设备存在生产效率低下、成本高、难以保证加工精度的缺点,不能满足超大型节筒坡口的加工需要。由于大型节筒坡口加工设备的使用范围受到时间和空间上的限制,通用性差、利用率低、一次性投资成本高,若单纯走引进之路,则受政治、经济、技术等诸多因素限制,且势必延长产品的生产周期,不能满足国防建设之所需,产品的质量安全也无从保证。因此,为了适应国防建设的发展和提高国防工业的水平,需要走自主创新的道路,研制一种具有自主知识产权、效率高、经济实用的大型节筒坡口加工专用设备,以提升我国潜艇的生命力、可靠性和整体性能。本文重点对坡口加工机床的夹紧装置、径向进给、纵向升降和切割角度调整等重要部件的设计,根据设计和使用的要求,对夹紧装置的静态刚度和强度、节筒受力变形和其加工误差进行分析。关键词坡口等离子束数控机床黑龙江科技学院毕业设计(论文)IIAbstractAtpresent,thereisntlargeshellringgrooveprocessingequipmentindomesticandthetraditionalgrooveprocessingmachineequipmenthasalotofshortcoming,whichincludeslowproductivity,highcost,andinaccuracysoitdoesntmeettheprocessingneedsofthelargeshellringgrooveprocessing.Becausethereisthetimeandspaceofapplicationrangeoflargeshellringgrooveprocessingequipmentarelimitedandpooruniversality,poorefficiency,hightheonceonlyinvestmentcost.Ifweonlymakeintroduction,thereislotsoflimitedfactorssuchastheaspectsofpolitics,economicandtechnologyetc,whichwillleadtoextendproductionperiod,andcantmeettheneedsofnationaldefense,andcantguaranteethesafetyofproductionquality.Therefore,inordertoadapttothedevelopmentofnationalconstructionandincreasethelevelofnationaldefenseindustry,weshouldbeselfrelianceandinnovation,anddeveloplargeshellringgroovespecialequipmentthathasinitiativeintellectualproperty,highefficiencyandeconomicpracticalforincreasingthevitality,reliabilityandwholefunctionofourcountryssubmarine.Thedesignfocusonclampdevice,crossfeeddevice,longitudinalliftdeviceandcuttingangleadjustingdevice,basedontherequireofdesignanduse,aimedatstaticstiffnessandintensity,shellstresstransformsanditsprocessingerroranalysis.KeywordsgroovePlasmanumericalcontrolmachinery黑龙江科技学院毕业设计(论文)III目录摘要......................................................IAbstract..................................................II第1章绪论................................................11.1课题背景.............................................11.2切割技术的现状、应用形式及技术经济性................21.3本文研究的主要内容...................................41.3.1设备注意事项..................................41.3.2工作内容......................................5第2章机床总体设计........................................62.1坡口加工工艺.........................................62.1.1机械加工方法..................................72.1.2热切削方法....................................72.2机床总体设计的基本要求...............................92.3总体结构布局........................................112.3.1总体结构布局原则.............................112.3.2配置形式的选择...............................112.3.3方案选择.....................................122.4机床工作原理........................................13第3章机床各个装置和机构的结构设计.......................173.1工件定位夹紧装置结构设计............................173.2割炬横向进给装置结构设计............................173.3割炬纵向升降装置结构设计............................193.4液压动力系统结构设计................................213.5回转支架和底座结构设计..............................223.6坡口割炬角度及靠背轮调整装置结构设计...............23第4章机床夹紧装置的计算与分析...........................244.1定位夹紧装置杆类构件的受力计算与稳定性分析.........244.2液压缸体压强........................................274.3中央立柱的强度分析..................................28黑龙江科技学院毕业设计(论文)4.4节筒加工误差分析.....................................294.5相关关键外购件的选取.................................30结论.......................................................31致谢.......................................................32参考文献...................................................33附录.......................................................34黑龙江科技学院毕业设计(论文)CATALOGAbstract........................................................................................................IAbstract......................................................................................................IIFirstchapterIntroduction............................................................................11.1Projectbackground...........................................................................11.2Cuttingtechnologypresentsituation,applicationandtechnicaleconomy........................................................................................21.3Themaincontentsofthispaper.......................................................41.3.1Equipmentcharacteristics....................................................41.3.2Jobcontent...........................................................................5ThesecondchapterMachinetooldesign...................................................62.1Groovemachiningtechnology.........................................................62.1.1Mechanicalprocessingmethod...........................................72.1.2Thermalcuttingmethod......................................................72.2Thebasicrequirementsofthemachinetooldesign.........................92.3Overalllayout.................................................................................112.3.1Overalllayoutprinciples...................................................112.3.2Configurationoption.........................................................112.3.3Schemeselection...............................................................122.4Machineworkingprinciple............................................................13ThethirdchapterEachdeviceandmachinetoolstructure..................173.1orkpiecelocatingandclampingdevicestructuredesign................173.2Torchtransversefeedingdevicestructuredesign..........................173.3Torchlongitudinalliftingdevicestructuredesign.........................193.4Hydraulicpowersystemstructuredesign......................................213.5Rotarybracketandthepedestalstructuredesign...........................223.6Groovecuttingangleandthebackrestwheeladjustingdevicestructuredesign...........................................................................23ThefourthchapterCalculationandanalysisofmachinetoolclampingdevice............................................................................................................244.1Positioningandclampingdeviceofbarcomponentsstress

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