毕业论文-数控机床改造-毕业外文翻译

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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.MackeyFirstnumericalcontrolsystemdevelopmentsummarybriefhistoryandtendencyIn1946thefirstelectronicaccountingmachinewasborn

2、intheworld,thisindicatedthehumanitycreatedhasbeenpossibletostrengthenandpartiallytoreplacethementallaborthetool.Itwiththehumanitythesewhichintheagriculture,theindustrysocietycreatedonlyisstrengthensthephysicallaborthetooltocompare,gotupthequantitiveleap,enteredthein

3、formationsocietyforthehumanitytolaythefoundation.After6years,in1952,computertechnologyappliedtotheenginebed,thefirstnumericalcontrolenginebedwereborninUS.Fromthistimeon,thetraditionalenginebedhashadthearcherytargetchange.Sincenearlyhalfcentury,thenumericalcontrolsys

4、temhasexperiencedtwostagesandsixgenerationofdevelopment.1.1Numericalcontrol(NC)stage(1952~1970)Theearlycomputeroperatingspeedislow,wasnotbigtothensciencecomputationandthedataprocessinginfluence,butcouldnotadapttheenginebedreal-timecontrolrequest.Thepeoplecannotbutus

5、enumerallogiccircuit"tobuild"tobecomeanenginebedspecialpurposecomputertotakethenumericalcontrolsystem,iscalledthehardwareconnectionnumericalcontrol(HARD-WIREDNC),JianChengweinumericalcontrol(NC).Alongwiththeprimarydevicedevelopment,thisstagehashadbeenthroughrepeated

6、lythreegenerations,namely1952firstgenerationof--electrontube;1959secondgenerationof--transistor;1965thirdgeneration--smallscaleintegrationelectriccircuit.1.2Computernumericalcontrol(CNC)stage(in1970~present)In1970,thegeneralminicomputeralreadyappearedandthemassprodu

7、ction.Thereupontransplantsittakesthenumericalcontrolsystemthecorepart,fromthistimeonenteredthecomputernumericalcontrol(CNC)thestage("whichshouldhavecomputerinfrontofthegeneral"twocharacterstoabbreviate).In1971,AmericanINTELCorporationintheworldfirsttimethecomputertw

8、omostcorespart--logicunitsandthecontroller,usedthelargescaleintegratedcircuittechnologyintegrationontogetherthechip,calleditthemicroproces