外文翻译数控车床

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1、CNCWhatisCNC?Computernumericalcontrolisaverybroadtermthatencompassesavarietyoftypesofmachines—allwithdifferentsizes,shapes,andfunctions.ButtheeasiestwaytothinkaboutCNCistosimplyunderstandthatit’sallaboutusingacomputerasameanstocontrolamachinethatcarvesusefulobj

2、ectsfromsolidblocksofmaterial.Forexample,aCNCmachinemightbeginwithasolidblockofaluminum,andthencarveawayjusttherightmaterialtoleaveyouwithabicyclebrakehandle.CNCmachinescanbedividedintotwogroups:turningmachinesandmillingmachines.Aturningmachineisgenerallymadeup

3、ofadevicethatspinsaworkpieceathighspeedandatool(sharpedge)thatshavesofftheundesiredmaterialfromtheworkpiece(wherethetoolismovedbackandforthandinandoutuntilthedesiredformisachieved).Amillingmachineisamachinethathasaspindle(adevicesimilartoarouter)withaspecialtoo

4、lthatspinsandcutsinvariousdirectionsandmovesinthreedifferentdirectionsalongthex,y,andzaxes.Historically,youwouldn’tactuallyneedacomputertocreateformswithaturningmachineoramillingmachine.Addingacomputertothemixallowsyoutodesignaproductonacomputerfirstandthenspec

5、ifyhowthemachineshouldcutthisproduct.Todesigntheproductistoproduceacomputeraideddesign(CAD)file.Thenyouspecifyhowthemachineshouldcuttheproduct,andtheresultofthatstepisacomputer-aidedmanufacturing(CAM)file(orG-Codefile,or.NCfile—therearemanynamesforthistypeoffil

6、e).ThisCAMfileremembersalloftheoperationsthatthemillingmachinemustfollowtocutoutthepartsfortheproduct.ThecomputertellstheCNCmachinehowtobuildthepartbyinterpretingtheCAMfileintosignalsthattheCNCmachinecanunderstand.IndustrialUsesIndustrialapplicationsforCNCmachi

7、neshavebeenchieflybasedaroundtheremovalofmetaltocreateadesiredform.Metaliswidelyusedforproducingalmosteverythingweseearoundus,eventhoughthesethingsmaynotbemadeofmetalthemselves.Someofthemostobviousproductsthataremadeofmetalarecars.Theengineblockandthepartswithi

8、nthetransmissionaredirectlyproducedfromaCNCmachinebecausetighttolerancesarenecessary(atoleranceisarangeindimensioningtowhichthemachinemustadhere).However,mostofthepartsofaca