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12009届学生毕业论文(设计)存档编号__________毕业论文外文翻译题目数控技术及其产业发展部(系)机械与建筑工程学部___专业机械设计制造及其自动化姓名学号指导教师2009年月日21.AboutnumericalcontrolsystemdesigndevelopmentgaugeAsnotedpreviously,therearebettercommonability,flexibility,adaptability,expandingintheopennumericalcontrolsystem,countriessuchasU.S.A.,EuropeanCommunityandJapan,etc.implementthestrategicdevelopmentplanoneafteranother,carryonresearchandformulationofthesystematicnormofstructuralnumericalcontroloftheopensystemOMAC,OSACA,OSEC,3ofworldheavyeconomycarryonthesamescienceplanandstandardizeformulationnearlyinashorttimemost,haveindicatedanewarrivalofperiodofchangeofthetechnologyofnumericalcontrol.OurcountrystartedresearchandformulationwhichstandardizedtheframeofONCnumericalcontrolsystemofChinatooin2000.2.AboutthenumericalcontrolstandardThenumericalcontrolstandardisakindoftrendofinformationbaseddevelopmentofmanufacturingindustry.Numericalcontroltechnologyinformationexchangeof50yearborn,tobasedonISO6983standard,adoptG,Mcodedescribeshowprocesses,itsessentialcharacteristicfacestheprocessingcourse,obviously,hecantmeetdemandsofhighspeeddevelopmentofthetechnologyofmodernnumericalcontrolmoreandmorealready.Forthisreason,studyingandmakingakindofnewCNCsystemstandardISO14649STEPNCintheworld,itspurposeisofferingakindofneutralmechanismnotdependingontheconcretesystem,candescribetheunifieddatamodelinwholelifespanoftheproducts,thusrealizethewholemanufactureprocess,andeventhestandardizationofeachindustrialfieldproductinformation.TheappearanceofSTEPNCmaybearevolutionofthetechnicalfieldofthenumericalcontrol,ondevelopmentandeventhewholemanufacturingindustryofthetechnologyofnumericalcontrol,willexertafarreachinginfluence.Firstofall,STEPNCputsforwardakindofbrandnewmanufactureidea,inthetraditionalmanufactureidea,NCprocessestheprocedurestoallconcentrateonsinglecomputer.Underthenewstandard,NCprocedurecanbedispersedonInternet,thisisexactlyadirectionofopen,networkeddevelopmentoftechnologyofnumericalcontrol.Secondly,STEPNCnumericalcontrolsystemalsocanreduce,processabout75drawing,processprocedureworkoutabout35timeandprocessabout50timegreatly.Atpresent,AmericanEuropeancountriespaymuchattentiontotheresearchofSTEPNC,EuropeinitiatesIMSplan1999.1.12001.12.3ofSTEPNC.20CAD/CAM/CAPP/CNCusers,manufacturersandacademicorganizationsfromEuropeandJapanparticipatedinthisplan.STEPToolsCompanyofU.S.A.isadeveloperofthedatainterchangesoftwareofmanufacturingindustryintheglobalrange,hehasalreadydevelopedandaccusedofthesupermodelSuperModelofinformationexchangeofmachinetoolingbycounting,itsgoalistodescribeallprocessingcourseswiththeunifiednorm.SuchnewdatainterchangeformhasalreadybeenverifiedinallocatingtheSIEMENS,FIDIAandEuropeanOSACANCnumericalcontrolatpresent.33.PairsofbasicestimationsoftechnologyandindustrydevelopmentofnumericalcontrolofourcountryThetechnologyofnumericalcontrolofourcountrystartedin1958,thedevelopmentcourseinthepast50yearscanroughlybedividedinto3stagesThefirststageisfrom1958to1979,i.e.closeddevelopingstage.Inthisstages,technologyofforeigncountriesblockadeandbasicrestrictionoftermsofourcountry,thedevelopmentofthetechnologyofnumericalcontroliscomparativelyslow.DuringSixthFiveYearPlanPeriod,theSeventhFiveYearPlanPeriodofthecountryinsecondstageandearlierstageintheEighthFiveYearPlanPeriod,introducetechnology,digestandassimilate,thestageofestablishingthesystemofproductiondomesticizationarisesingtentatively.Atthisstage,becauseofreformandopeningupandnationalattention,andstudytheimprovementofthedevelopmentenvironmentandinternationalenvironment,research,developmentandallmakingconsiderableprogressinproductiondomesticizationoftheproductsofthetechnologyofnumericalcontrolofourcountry.ThethirdstageisthatonthelaterstageintheEighthFiveYearPlanPeriodofthecountryandduringtheNinthFiveYearPlanPeriod,implementtheresearchofindustrialization,entermarketcompetitionstage.Atthisstage,madesubstantiveprogressinindustrializationofthedomesticnumericalcontrolequipmentofourcountry.IntheNinthFiveYearPlanlatterstage,domesticnumericalcontroldomesticmarketshareoflathereach50,mixdomesticnumericalcontrolsystempopulartoupto10.Reviewthedevelopmentcourseinthepast50yearsoftechnologyofnumericalcontrolofourcountry,especiallypassthebrainstormof4FiveYearPlans,allinallhasmadefollowingachievements.a.Haveestablishthefoundationofthetechnicaldevelopmentofnumericalcontrol,hasbasicallymasteredthetechnologyofmodernnumericalcontrol.Ourcountryknowfromnumericalcontrolsystem,servourge,numericalcontrolhostcomputer,specialplaneandtheirbasicoffittingsbasicallyalreadynow,amongthemmosttechnologyhavealreadypossessedthefoundationthatiscommercializedanddeveloped,sometechnologyhasalready,industrializationcommercialized.a.Haveformedtheindustrialbaseofnumericalcontroltentatively.Intacklingkeyproblemsthefoundationthattheachievementandsometechnologycommercialize,setupthesystematicfactoriesofnumericalcontrolwithproductioncapacityofbatchsuchasnumericalcontrolofCentralChina,spaceflightnumericalcontroletc..ElectricalmachineryplantofLanzhou,abatchofservosystemsandfirstmachinetoolplant,firstmachinetoolplantofJinanofservoelectricalmachineryfactoryandBeijing,etc.severalnumericalcontrolhostcomputerfactoriessuchasthenumericalcontrolinCentralChina.Thesefactorieshavebasicallyformedthenumericalcontrolindustrialbaseofourcountry.b.Havesetupresearchofanumericalcontrol,development,managerialtalentsbasicteam.Thoughhasmadeconsiderableprogressinresearchanddevelopmentandindustrializationofthetechnologyofnumericalcontrol,butwewillrealizesoberly,theresearchanddevelopmentofthetechnologyofadvancednumericalcontrolofourcountry,thereisgreaterdisparitybetweencurrentsituationandcurrentdemandofourcountryofengineeringlevelespeciallyinindustrialization.Thoughveryfastfromlongitudinaldevelopmenttowatchourcountry,horizontaluntilcontrastwithforeigncountries,theengineeringlevelhasdisparity,thereisdisparitytooindevelopmentspeedinsomeaspects,i.e.thedisparityofengineeringlevelbetweensomehighgrade,precisionandadvancednumericalcontrolequipment4hasthetendencytoexpand.Watchfromworld,estimateroughlyasfollowsaboutthenumericalcontrolengineeringlevelofourcountryandindustrializationlevel.a.Ontheengineeringlevel,inprobablybackward101yearswiththeadvancedlevelinforeigncountries,itisbiggerinhighqualityprecisionandsophisticatedtechnology.b.Attheindustrializationlevel,themarketshareislow,thevarietycoveragerateislow,havenotformedthelargescaleproductionyetFunctionpartspecializedlevelofproductionandformacompletesetabilitytobelowerAppearancequalityisrelativelypoorDependabilityisnothigh,thecommercializedintensityisinsufficientNotsettinguponesownbrandeffectyetindomesticnumericalcontrolsystem,usershaveinsufficientconfidence.c.Attheabilityofsustainabledevelopment,tocompetitionnumericalcontrolresearchanddevelopmentoftechnology,engineeredabilityweakerNumericalcontroltechnologicalapplicationexpandeffortstobebetterTheresearch,formulationthatrelevantstandardsarenormallagsbehind.Itisanalyzedthatthemainreasonforhavingdisparitydescribedabovehasthefollowingseveralrespect.a.Realizetherespect.Knowtodomesticnumericalcontrolindustryprocessarduousness,complexityandlongtermcharacteristicinsufficientlyOnethatistomarketunstandard,foreignblockadeaddstrangle,system,etc.underestimatewhilebeingdifficultItisnotenoughtoanalyzetotechnologicalapplicationlevelandabilityofnumericalcontrolofourcountry.b.System.Paycloseattentiontonumericalcontrolindustrializationmanyintheissue,considernumericalcontrolindustrializationlittleintheissuesyntheticallyintermsofthesystematicone,industrychainintermsoftechnologySetupintactrelatedsystem,completetraining,servicenetwork,etc.ofhighqualitysupportthesystem.c.Mechanism.Thebadmechanismcausesthebraindrain,restrainingtechnologyandtechnologicalroutefrominnovatingagain,productsinnovation,andhasrestrictedtheeffectiveimplementationofplanning,hasoftenplannedtheideal,implementthedifficulty.d.Technology.Enterprisesareindifferentinautonomousinnovationintechnology,keytechnologyisengineeredandindifferent.Lathestandardlagbehind,levelrelativelylow,numericalcontrolsystemnewstandardstudyenoughly.4.Strategicthinkinguntiltechnologyandindustrializationofnumericalcontrolofourcountrydevelop4.1StrategicconsiderationOurcountryofstrategicconsiderationmakesthebigcountry,shouldtryhardtoacceptthefrontinsteadofthebacktransformationintheworldindustryshifts,shouldmasterandmakekeytechnologyadvancedly,otherwiseinanewroundofinternationalindustrialstructureadjustment,ofourcountrymanufacturingindustrystepforwardtheemptycore.Weregardresource,environment,marketascost,possibilitygottoexchangeassemblethecentre,butnotmasterthestatusofthemanufacturingcenterofkeytechnology,willsoinfluencethedevelopmentprocessofthemodernmanufacturingindustryofourcountryseriously.
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