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磨床电气的PLC改造设计说明书.doc

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磨床电气的PLC改造设计说明书.doc

毕业设计论文磨床电气的PLC改造THEPLCOFTHEGRINDINGMACHINAELECTRICITYREFORMATION学生姓名学院名称机电工程学院专业名称机械设计制造及其自动化指导教师2008年6月2日徐州工程学院毕业设计(论文)I摘要由于工厂企业中很多磨床年代久远,其工作已远远达不到现代生产的要求。因此有必要对旧式的常规电动机控制系统进行技术改造,以可编程序控制器取代常规的继电器,以达到磨床的自动化控制。本文介绍了用可编程序控制器来对平面磨床控制系统进行现代化改造,简要叙述了老式成型平面磨床的工作原理及用PLC进行改造设计的方法和设计步骤,并给出PLC编程程序梯形图。改造后的磨床工作安全可靠,系统运行情况良好,磨削精度更高利用PLC控制磨床运行,实现了磨床启动、停止、故障停止、紧急停止的功能,可根据运行要求灵活切换磨床的控制方式提供过载,轻载,断相和电压不平衡保护现场显示运行状态,实现智能化监控。并因所吸工件的不同灵活调节电磁吸盘的电流,并且显示数值大小。从而实现了磨床运行的自动化。PLC控制的特点使原机床控制大大的简单化,并且维修方便,易于检查。节省大量的继电器元件,使机床的工作效率更高。该项技术还可推广应用于其他辅机设备或其他领域的自动化控制改造中。关键词可编程序控制器平面磨床改造徐州工程学院毕业设计(论文)IIAbstractBecausemanygrinderagesareremoteinthemanufacturingdivision,itsworkcouldnotachievethemodernproductionbyfartherequest.Soitisnecessarytocarryontechnologicaltransformationtotheoldfashionedregularmotorcontrolsystemandreplacenormalregulationsbyprogrammableprefacecontrollerofafterelectricapplianceswithattaingrindingmachineofautomationcontrol.Thistextintroducedcomeswiththeprogrammablecontrollertothesurfacegrindingmachinecontrolsystemtomakethemodernizedtransformation,narratedtheoldstyleformationsurfacegrindingmachinesprincipleofworkbrieflyandcarriesonthetransformationdesignwithPLCthemethodandthedesignprocedure,andgivesPLCtheprogrammingproceduretrapezoidalchart.Afterthereformationofgrindingmachineworksafetycredibility,hesystemsoperationsituationisgood,thegrindingprecisionishigherUsingthePLCcontrolgrindermovement,realizedthegrindertostart,thestop,thebreakdowntostop,theemergencystopfunction,mightcutgrinderscontrolmodenimblyaccordingtothemovementrequestProvidestheoverload,theunderloading,breaksandthevoltageisnotbalancedprotectsThescenedemonstrationrunningstatus,realizestheintellectualizedmonitoring.Becauseandattractstheworkpiecethedifferentnimbleadjustmentmagnetchuckelectriccurrent,anddemonstrationvaluesize.Thushasrealizedthegrindermovementautomation.ThePLCcontrolscharacteristiccausestheoriginalmachinetoolcontrolbigsimplification,andservicesconveniently,easytoinspect.Savesthemassiverelayelement,causesenginebedsworkingefficiencytobehigher.Thistechnologymayalsopromoteappliesinotherauxiliaryengineequipmentorinotherdomainautomatedcontroltransformation.KeywordsProgrammablelogiccontrollerFlatsurfacegrindingmachineReformation徐州工程学院毕业设计(论文)1目录1绪论......................................................................................................................................12磨床的概述..........................................................................................................................32.1磨床的介绍............................................................................................................................32.2世界平面磨床发展趋势........................................................................................................33可编程控制器的概况..........................................................................................................53.1PLC的产生和特点及其发展动向.........................................................................................53.1.1PLC的产生......................................................................................................................53.1.2PLC的定义......................................................................................................................53.1.3PLC的特点......................................................................................................................63.1.4PLC的发展趋势..............................................................................................................73.2PLC的系统结构和基本工作原理.........................................................................................83.2.1PLC的系统结构..............................................................................................................83.2.2PLC的系统结构和基本工作原理..................................................................................93.2.3PLC的主要功能............................................................................................................103.2.4PLC的应用设计步骤.....................................................................................................113.3PLC的选型原则...................................................................................................................124系统的总体设计................................................................................................................154.1改造平面磨床的步骤..........................................................................................................154.1.1改造方案的确定............................................................................................................154.1.2改造的技术准备............................................................................................................154.1.3改造的实施....................................................................................................................164.1.4验收及后期工作............................................................................................................174.1.5用PLC改造继电接触式控制系统的步骤..................................................................184.2控制线路控制改造要求......................................................................................................184.3原设备电器的工作原理......................................................................................................194.3.1平面磨床主要结构和运动形式....................................................................................194.3.2电气控制线路分析........................................................................................................204.4分析控制对象,进行系统的硬件设计..............................................................................234.5系统的软件设计..................................................................................................................245性能测试与分析................................................................................................................27结论...............................................................................................................................................28致谢...............................................................................................................................................29参考文献.......................................................................................................................................30附录.................................................................................................................错误未定义书签。中文翻译..................................................................................................错误未定义书签。外文翻译..................................................................................................错误未定义书签。

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