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1212008.2MechanicalEngineeringDesignNCTechnologyMcGrawHillShigleyJE.MechanicalEngineeringDesign.1、ResearchcurrentsituationofNClatheinourtimesResearchanddevelopmentprocesstosuchvariouskindsofnewtechnologiesasnumericalcontrollathe,machiningcenter,FMS,CIMS,etc.ofcountriesallovertheworld,linkedtowiththeinternationaleconomicsituationclosely.Themachinetoolindustryhasinternationaleconomytomutuallypromoteanddevelop,enter21alerterasofWorldAffairs,thefunctionthatpeoplesknowledgeplaysismoreoutstanding,andthemachinetoolindustryisregardedasthefoundationofthemanufacturingindustryofthemachine,itskeypositionandstrategicmeaningaremoreobvious.Within19911994years,theeconomicrecessionoftheworld,expensiveFMS,CIMSlowersthetemperature,among19952000years,theinternationaleconomyincreasesatalowspeed,accordingtorequisitionforNClatheandtheworldfourmajorinternationallathesexhibitioninordertoboostproductivityofusersofvariousfieldsofpresentworldmarketEMO,IMTS,JIMTOF,ChinaCIMTofJapanofU.S.A.ofEurope,havetheanalysisoftheexhibit,therearethefollowingseveralpointsmainlyinthetechnicalresearchofNClatheinourtimes(1)、PaymoreattentiontonewtechnologyandinnovationWorldwide,arelaunchingthenewcraft,newmaterial,newstructure,newunit,researchanddevelopmentofthenewcomponentinamorecosteffectivemanner,developmentalresearchofforinstancenewcuttermaterial,thenewelectricmainshaftofmainshaftstructure,highspeed,highspeedstraightlineelectricalmachinery,etc..Regardinnovatinginimprovementoftheprocessingtechnologyasthefoundation,forprocessultraandharddifficulttocutmaterialandspecialcompositeandcomplicatedpart,irregularcurvedsurface,etc.researchanddevelopnewlathevarietyconstantly.(2)、ImprovetheprecisionandresearchofmachinetoolingInordertoimprovethemachiningaccuracyofthemachiningcenter,are1222008.2MechanicalEngineeringDesignimprovingrigidityofthelathe,reductionvibrationconstantly,dispelhotlyandoutofshape,reducethenoise,improvetheprecisionoflocalizationofNClathe,repeatprecision,workingdependability,stability,precisionkeeping,worldalotofcountrycarryonlathehoterror,lathesportandloadoutofshapesoftwareoferrorcompensatetechnicalresearch,takeprecisioncompensate,softwarecompensatemeasureimprove,somemaymakethiskindoferrordispel60already.Andisdevelopingretrofitconstantly,nanometerisbeingprocessed.(3)、ImprovetheresearchofthemachinetoolingproductivityWorldNClathe,machiningcenterandcorrespondingsomedevelopmentofmainshaft,electricalmachineryofstraightline,measuringsystem,NCsystemofhighspeed,undertheprerequisiteofboostingproductivity.(4)、Whatalotofcountrieshavealreadybeguntothenumericalcontrolsystemmeltintelligently,openly,studynetworkedlyA、elligentresearchofthenumericalcontrolsystemMainlyshowinginthefollowingaspectsItisintelligentinordertopursuetheefficiencyofprocessingandprocessquality,theselfadaptationtotheprocessingcourseiscontrolled,thecraftparameterproducesresearchautomaticallyJointheconvenientoneinordertoimprovetheperformanceofurginganduseintelligently,tothefeedbackcontrol,adaptiveoperation,discerningautomaticallyloadselectsmodelsautomatically,sincecarriesonresearchwholedefinitely,etc.oftheelectricalmachineryparameterTherearesuchresearchoftherespectasintelligentautomaticprogramming,intelligentmanmachineinterface,intelligencediagnosing,intelligentmonitoring,etc..B、ThenumericalcontrolsystemmeltsandstudiesopenMainlyshowinginthefollowingaspectsThedevelopmentofthenumericalcontrolsystemisonunifiedoperationplatform,facethelatheproducerandsupportfinally,throughchanging,increasingorcuttingoutthestructuretargetnumericalcontroltarget,formtheseriation,andcanuseusersspeciallyconvenientlyandthetechnicalknowhowisintegratedinthecontrolsystem,realizetheopennumericalcontrolsystemofdifferentvariety,differentgradefast,formleadingbrandproductswithdistinctdistinction.Systemstructurenormoftheopennumericalcontrolsystem1232008.2MechanicalEngineeringDesignatpresent,norm,disposingthenorm,operationplatform,numericalcontrolsystematicfunctionstorehouseandnumericalcontrolsystematicfunctionsoftwaredevelopinginstrument,etc.arethecoreofpresentresearchtopassthrough.C、Meetingthemanufacturesystemoftheproductionline,demandfortheinformationintegrationofthemanufacturingcompanynetworkedlygreatlyofnumericalcontrolequipment,itisabasicunitofrealizingthenewmanufacturemodetoo.2、Classificationofthemachiningcenter(1)Processaccordingtomainshaftspacepositionwhenitclassifiestobeasfollows,horizontalandverticalmachiningcenter.Horizontalmachiningcenter,refertothemachiningcenterthattheaxislevelofthemainshaftissetup.Horizontalmachiningcenterfor35sportcoordinateaxis,acommononethreerectilinearmotioncoordinateaxisandoneturnthecoordinateaxisofsportsroundturntheworkingbenchround,itcanoneisitisitfinishother4Taxiprocessingbesidesinstallingsurfacesandtopsurfacestoinserttoinstallinworkpiece,mostsuitableforprocessingthecasebodyworkpiece.Comparedwithstrengthtypemachiningcenterit,thestructureiscomplicated,thefloorspaceislarge,qualityislarge,thepriceishigh.Verticalmachiningcenter,theaxisofthemainshaftoftheverticalmachiningcenter,inordertosetupvertically,itsstructureismostlytheregularposttype,theworkingbenchissuitableforprocessingpartsfortheslipperyoneofcross,have3rectilinearmotioncoordinateaxisgenerally,canfindaroomforonehorizontalnumericalcontrolrevolvingstagethe4thaxleofaxleprocessthespiralpartatworkingbench.Theverticalmachiningcenterisofsimplestructure,thefloorspaceissmall,thepriceislow,afterallocatingvariouskindsofenclosures,cancarryontheprocessingofmostworkpieces.Largescalegantrymachiningcenter,themainshaftsaremostlysetupvertically,isespeciallyusedinthelargescaleorwithcomplicatedformworkpiece,isitspendthemanycoordinategantrymachiningcentertoneedlikeaviation,aerospaceindustry,someprocessingofpartoflargescalesteamturbine.Fivemachiningcenters,thiskindofmachiningcenterhasfunctionofthe1242008.2MechanicalEngineeringDesignverticalandhorizontalmachiningcenter,oneisitafterinserting,canfinishallfiveTaxiprocessingbesidesinstallingthesurfacetoinstallinworkpiece,theprocessingwaycanmakeformofworkpieceerrorlowest,save2timesinstallandinsertworking,thusimproveproductionefficiency,reducetheprocesscost.2ClassifybycraftuseIsitmillmachiningcentertobore,isitmillforverticaldoorframemachiningcenter,horizontaldoorframemillthemachiningcenterandLongmendoorframemillthemachiningcentertodivideinto.Processingtechnologyitsrelymainlyonthefactthatthedoorframeismilled,usedincasebody,shellandvariouskindsofcomplicatedpartspecialcurveandlargeprocesses,curvedsurfaceofoutlineprocess,suitableformanyvarietiestoproduceinbatchessmall.Complexmachiningcenter,pointfivetimesandcompoundandprocessmainly,themainshaftheadcanbeturnedroundautomatically,stand,lieandprocess,afterthemainshaftisturnedroundautomatically,realizeknowingthatvariesinthehorizontalandverticaldirection.3ClassifybyspecialfunctionSingleworkingbench,apairofworkingbenchmachiningcenterSingleaxle,dualaxle,threeaxlecanchangemachiningcenter,mainshaftofcaseTransferverticallytothetowermachiningcenterandtransferOnehundredsheetsofstorehousesaddsthemainshaftandchangesoneonehundredsheetsofmachiningcentersOnehundredsheetsofstorehousesconnectsandwriteshandstoaddthemainshaftandchangeonehundredsheetsofmachiningcentersOnehundredsheetsofstorehousesaddsthemanipulatorandaddsonepairofmainshaftstotransfertothetowermachiningcenter.3、DevelopmenttrendofthecurrentnumericalcontrollatheAtpresent,theadvancedmanufacturingtechnologyintheworldisrisingconstantly,suchapplicationoftechnologyasultrafastcutting,ultraprecisionprocessing,etc.,therapiddevelopmentoftheflexiblemanufacturingsystemandintegratedsystemofthecomputeroneisconstantandripe,haveputforwardhigher
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