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1、毕业设计(论文)外文翻译毕业设计(论文)题目:外文题目:TheNumericalControlEngineBedTransforms译文题目:数控机床改造学院:专业班级:学生姓名:指导教师:年月日TheNumericalControlEngineBedTransformsHarveyB.MackeyFirstnumericalcontrolsystemdevelopmentsummarybriefhistoryandtendencyIn1946thefirstelectronicaccounting
2、machinewasbornintheworld,thisindicatedthehumanitycreatedhasbeenpossibletostrengthenandpartiallytoreplacethementallaborthetool.Itwiththehumanitythesewhichintheagriculture,theindustrysocietycreatedonlyisstrengthensthephysicallaborthetooltocompare,gotupth
3、equantitiveleap,enteredtheinformationsocietyforthehumanitytolaythefoundation.After6years,in1952,computertechnologyappliedtotheenginebed,thefirstnumericalcontrolenginebedwereborninUS.Fromthistimeon,thetraditionalenginebedhashadthearcherytargetchange.Sin
4、cenearlyhalfcentury,thenumericalcontrolsystemhasexperiencedtwostagesandsixgenerationofdevelopment.1.1Numericalcontrol(NC)stage(1952~1970)Theearlycomputeroperatingspeedislow,wasnotbigtothensciencecomputationandthedataprocessinginfluence,butcouldnotadapt
5、theenginebedreal-timecontrolrequest.Thepeoplecannotbutusenumerallogiccircuit"tobuild"tobecomeanenginebedspecialpurposecomputertotakethenumericalcontrolsystem,iscalledthehardwareconnectionnumericalcontrol(HARD-WIREDNC),JianChengweinumericalcontrol(NC).A
6、longwiththeprimarydevicedevelopment,thisstagehashadbeenthroughrepeatedlythreegenerations,namely1952firstgenerationof--electrontube;1959secondgenerationof--transistor;1965thirdgeneration--smallscaleintegrationelectriccircuit.1.2Computernumericalcontrol(
7、CNC)stage(in1970~present)In1970,thegeneralminicomputeralreadyappearedandthemassproduction.Thereupontransplantsittakesthenumericalcontrolsystemthecorepart,fromthistimeonenteredthecomputernumericalcontrol(CNC)thestage("whichshouldhavecomputerinfrontofthe
8、general"twocharacterstoabbreviate).In1971,AmericanINTELCorporationintheworldfirsttimethecomputertwomostcorespart--logicunitsandthecontroller,usedthelargescaleintegratedcircuittechnologyintegrationontogetherthechip,calleditthemicroproces