【摘要】数控车床在工业自动化控制中有着广泛的应用．数控车床的控制系统也随着计算机的不断推广而得到进一步优化．本文就是一篇关于数控车床控制系统的设计论文．它首先概述了数控车床在当今信息工业社会中所扮演的重要角色．以及它的发展概况．然后通过对数控车床工作原理的阐述引出了几种数控车床控制系统的方案论证．其中包括了过去长用的数控车床系统，及现代常用的微计算机控制系统．通过这几种方案的比较，确定了由单片机控制步进电机转速的系统设计方案．并逐一介绍了系统的硬件电路及软件程序设计．其中在硬件电路中对8031及其外部扩展电路，光电耦合器电路，功率放大电路等几部分的功能及特性进行了详细的描述及参数分析．而软件部分则进行程序设计．且每个汇编程序都附有程序流程图，内容详尽．本文还涉及到51系列单片机应用设计，计算机接口技术，模拟电路等几门课程的基础理论．最后通过实验来验证该系统的正确性与可操作性．技术要求：主控采用单片机控制，刀台用两台步进电机实现X——Y平面的自动加工，加工精度：误差≤0.01mm完成方案的设计、论证、包括：硬件设计、软件设计关键字：数控车床单片机控制linearcutting线切割electricalsparkle电火花CNClatheelectricaldesignAbstractTheCNClathehavegottheextensiveapplicationinindustryautomatecontrol.AcontrolsystemforCNClathealsoexpandscontinuouslyalongwiththecomputerbutgetfurtherexcellentturn.ThistextisadesignforconcerningCNClathecontrolingsystemthesis.ItsaidanimportantroleforCNClatheinnowinformationindustrysocietyplayingatfirst.Anditofdevelopmentgeneralsituation.ThenpasstoaprojectforCNClatheworkingprincipleexpatiatingderivationafewcontrolingsystemargument.Amongthemincludedtopassbysystemofprogressiveconcle,andmodernincommonusemicrocomputercontrolsystem.Comparisonthemandthenmakesuretheplanthatusemicrocomputertocontrolit.Andcombinedtointroducehardwarecircuitandsoftwaredesignsofthesystemonebyone.Inhardwarecircuit,tothe8031anditsperipheralexpandscircuit,thephotocouplercircuitandpoweramplifiercircuitetc.Severalpartoffunctionsesandcharacteristicsproceededtodescribedetailedlyandparameteranalysis.Butthesoftwarepartexampleproceedtheproceduredesign.Andeachoneassemblercollectedflowchart,thecontentsisdetailed.Thistextstillinvolvesthefoundationofsomesubjectwhichare51microcomputerapplicationdesigninserieses,thecomputerinterfacingandanalogouscircuitinetc..Passtheexperimentfinallytotheaccuracythatverifythatsystemandmaneuverability.Requirementsoftechnology:themaincontrolusedby8031control,thecutterstationusedbytwosteppingenginetoachieveX-Yflatnessauto-manufacture,theprecisionofmanufacture:tolerance≤0.01mmThedesignandthesisofdocumentincluding:hardwaredesignandsoftwaredesign.K