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毕业设计摘要I摘要Z3040型摇臂钻床适用于单件或批量生产带有多孔的大型零件的孔加工，是机械加工车间常用的机床，在机械行业中得到了广泛应用。但继电器—接触器控制方式电路接线复杂，触电多，成本很高，今后的逻辑修改和增加功能比较困难等诸多缺点。PLC控制系统与继电器—接触器电气控制系统相比，具有结构简单，编程方便，调试周期短，可靠性高，对工作环境要求低等一系列优点。因此对Z3040摇臂钻床控制系统PLC改造是非常必要的。本设计对Z3040摇臂钻床电气控制系统PLC的改造。首先，从Z3040摇臂钻床的控制原理和PLC的特点分析入手；其次，根据控制系统的原理和PLC的特点完成了PLC机型的选择、I/O端口的分配和接线图绘制；PLC梯形图程序的设计、指令语句表编写和系统程序的仿真；最后根据控制要求，完成了摇臂钻床控制电路中主要电气元件的计算选择。通过PLC改造摇臂钻床控制系统，克服了继电器—接触器许多缺点，大大提高摇臂钻床的工作能力和工作寿命，同时运用了系统仿真，能形象、直观的模拟出摇臂钻床运动情况。关键词：可编程控制器，摇臂钻床，梯形图，电气控制系统本科毕业设计AbstractIIAbstractZ3040typeradialdrillingmachineismechanicalprocessingworkshopcommonlyusedmachinethatissuitableforsinglepieceorbatchproductionwithlargepartsoftheporousholeprocessing.itiswidelyusedinthemachineryindustry.buttherelaycontactdevicecontrolcircuitwiringwaymorecomplexelectricshock,costishigh，Thelogicofrevisionandfunctionincreasingwillverydifficultinthefuture.ThecontrolsystemofPLCcomparedwiththerelaycontactorelectriccontrolsystem.Ithavetheexcellentfeaturethatisasimplestructure,aconvenientprogramming,ashortcommissioningperiod,ahighreliabilityandananti-interferenceability,alowfailurerateandalowadvantagesforworkenvironment.SotheZ3040radialdrillingmachinecontrolsystemmodificationisverynecessary.ThisdesignthatisZ3040radialdrillingmachineoftheelectricalcontrolsystemisreformedthePLC.Firstofall,analysisZ3040radialdrillingmachinecontrolprincipleandthecharacteristicsofthePLC.Secondly,accordingtotheprincipleofPLCcontrolsystemandthecharacteristicsofthetypefinishPLCchoosetheI/OportdistributionandthewiringdiagramPLCladderdiagramofdrawingprogramdesigninstructionswrittenstatementtableandsystemofthesimulationprogram.Finally,itcompletesradialdrillingmachinemainelectricalcomponentselectionThroughthePLCcontrolsystemtransformationradialdrillingmachinethatovercomerelaycontactormanyfaults.ItGreatlyimprovetheradialdrillingmachineworkabilityandservicelifeanditusingasystemsimulation,whichcanimagetheintuitivethatradialdrillingmachinemotion.Keywordsprogrammablecontroller,radialdrillingmachine,ladderdiagram,electricalcontrolsystem攀枝花学院本科毕业设计目录目录摘要............................................................................................................................IAbstract........................................................................................................................II1绪论..................................................................................................................-1-1.1本课题选题背景和意义.............................................................................................-1-1.2本课题国内外研究现状、水平和发展趋势.............................................................-1-1.3本课题的主要工作.....................................................................................................-3-2Z3040摇臂钻床电气控制系统原理分析.........................................................-4-2.1Z3040摇臂钻床简介.................................................................................................-4-2.2Z3040摇臂钻床控制要求.......................................................................................-5-2.2Z3040摇臂钻床主电路的分析.................................................................................-7-2.3Z3040摇臂钻床控制电路的分析.............................................................................-7-2.3.1主运动控制......................................................................................................-7-2.3.2摇臂上升或下降控制......................................................................................-7-2.3.3主轴箱和立柱的松开及夹紧控制....................................................................-8-2.3.4控制电路保护....................................................................................................-8-2.4Z3040摇臂钻床信号和照明电路的分析.................................................................-9-3Z3040摇臂钻床控制系统PLC硬件设计...................................................-10-3.1PLC的简介..............................................................................................................-10-3.2PLC的选型..............................................................................................................-11-3.3PLC输入与输出端口地址的分配..........................................................................-13-3.4PLC电气接线图设计..............................................................................................-13-4Z3040摇臂钻床控制系统PLC软件设计.....................................................-15-4.1PLC软件设计方法的分类......................................................................................-15-4.2控制系统梯形图设计...............................................................................................-16-4.2.1主轴电动机控制梯形图................................................................................-16-4.2.2摇臂升降控制梯形图....................................................................................-16-4.2.3主轴箱和立柱松开、夹紧梯形图................................................................-18-4.2.4信号指示梯形图............................................................................................-19-4.2.5摇臂钻床控制系统梯形图................................