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1、摘要数控机床以它生产效率高、可加工零件多样化的特点，越来越显示出它的优越性，然而，很多资深的老企业还存在着许多原有的普通机床，如何将普通机床改造成数控机床，已成为机械加工设备改造工作的重点。本文以CA6140普通车床为例阐述了对普通机床进行技术改造的必要性，提出了该机床数控化改造的方案并实施了改造。机械部分改造主要做了以下工作：将两个进给方向的滑动丝杠改为滚珠丝杠，用伺服步进电机和减速齿轮来实现进给部分的调速，这样不仅提高了传动效率而且可以实现快速定位和准确的启、停；数字控制系统选用广州数控设备有`。关键词：数控机床；数控化改造；数控系统AbstractBasedoni
2、tshighproductionefficiency,machinablepartsdiversification,CNCmachinehasincreasinglyshownitssuperiority.However,manyseniorenterprisesstillhavelargeamountoforiginalgeneral-purposemachinetools,howtotransformtheordinarytoolsintoCNCmachinetoolshasbecamethefocusofthemechanicalprocessingequipme
3、ntmodification.BasedonCA6140centrelathe,thispaperexpoundsthenecessityofthetechnologicaltransformationtogeneral-purposemachinetools,andpurposedtransformationoftheCNCprogramandimplementedatransformation.Mechanicalpartsreconstructionmadethefollowingjob:takingthetwofeedingdirectionofslidings
4、crewinsteadofballscrew,servosteppingmotorandreductiongeartorealizethespeedregulationofthefeedpart,thisworksnotonlyimprovethetransmissionefficiency,butalsoachieverapidpositioningandaccuratestart,stop.DigitalcontrolsystemchoosesGSK928TC-2NCsystemwhichproducedbyNanjingHuaxingNCequipmentlimi
5、tedliabilitycompany.Thissystemachievesthedigitalcontrolcomponentscoordinatework,andthecostislow.Electricsystemtransformationcanceledalargenumberofelectroniccomponentsinhighelectricalcabinet;achievethecontrolcircuitbyswitchrelays,contactors,andservodrive.Then,testingprecisionandgeometryac
6、curacyofthemachineaftertransformation,thetestresultsmeetthemachine'saccuracy.Thetestresultsverifiedthefeasibilityandreliabilityofmachinetools,notonlytheprocessingexpanded,andthelaborintensityreduce,themachiningefficiencyimproved.Comparedwithbeforemodification,themachine'soperationsaremor
7、econvenient,andgreatlyreducethelaborerlaborintensity,improvetheproductionefficiencyandproductquality.Thisschemehasadvantageoflittleinvestmentandinstanteffect,whichisworthpopularizing.Keywords:NCmachinetool;Numericalcontroltransformation;NCsystem目录1绪论11．1课题的研究目的和意义11．2本文的选
