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1、CNCmachinetools,CNCengravingmachineoverviewHistoryofthedevelopmentofCNCmachinetoolsandnecessity:halfacentury,CNCsystemhasgonethroughtwostages,sixgenerationsofdevelopment.Hard-lineCNCphase(1952to1970).Theinitialcomputerprocessingspeedisrelativelylowbecause,forreal-timecontrolofmachine-widefashi
2、on.So,peoplehavetousedigitallogiccircuits,nridenintoadedicatedcomputerasnumericalcontrolmachinetoolsystem,knownasthehard-linenumericalcontrol(HardwiredNumericalControl),referredtoasNC(NC).Withthedevelopmentofcomponents,thisstageofdevelopmentthroughthreegenerations,beginningin1952thatthefirstge
3、nerationofnumericalcontrolsystem,itsmainfeatureisthetubes,relays,analogcircuitelementsbased;thesecondgenerationin1959，CNCItsmainfeatureisatransistor-baseddigitalcircuitelements;1965,thethirdgenerationCNCsystem,itsmainfeaturesistheintegrateddigitalcircuitdevicesbased.Computernumericalcontrolpha
4、se(1970-present).1970thefourthgenerationCNCsystem,itsmainfeatureisasmallcomputer-basedandsmall-scaleintegratedcircuitsusingCNC;1974、thefifthgenerationofnumericalcontrolsystem,itsmainfeaturesarebasedonmicroprocessorandadigitaldisplay,faultself-diagnosticfunctionnumericalcontrolsystems;1990,thes
5、ixthgenerationofnumericalcontrolsystem,whichischaracterizedbyaPC-basedCNCsystem,nowwidelyusedtoenterthestage,thepriceisrelativelymuchlower,andforsomelarge-scaleequipment,thehigh-precision,versatile,easytooperate,developsimple,easyandsothepriceisveryhigh,andsomecanreachmillionsoreventhousandsof
6、yuan.TheneedforthedevelopmentofCNCmachinetools:(1):WorldWarIIreflectedthedemandsofmoresophisticatedweaponsandequipment;computertechnologygenerationandcontinuousdevelopment;machinetechnologycontinuestoevolveandmatureandsoon.(2):WorldWarIIreflectedthedemandsofmoresophisticatedweaponsandequipment
7、;computertechnologygenerationandcontinuousdevelopment;machinetechnologycontinuestoevolveandmatureandsoon.CNCfeatures:DigitalcontrolmachinetoolCNCmachinetoolsisshort,isaprocesscontrolsystemwithautomatedmachinetools.Thecontrolsystemcandea
