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毕业设计说明书基于PLC的双面铣床自动控制系统设计专业自动化学生姓名*******班级*******学号*******指导教师*******完成日期*******基于PLC的双面铣床自动控制系统设计摘要：在现代生产中，部分中小型企业及高校仍广泛使用传统的继电器控制双面铣床，这些双面铣床的电控系统是以继电器、接触器的硬连接为基础的，技术上比较落后，特别是其触点的可靠性问题，直接影响了产品质量和生产效率。而利用PLC对双面铣床进行自动控制，便能取得很好的效果，使其工业生产更为经济、可靠，适应现在社会生产力的要求。设计了一个基于PLC的双面铣床自动控制系统，介绍了系统在硬件和软件方面的设计思想，以FX2N-48MRPLC为核心，构建一个自动控制的液压站台，使用四台电机满足课题基础的动作要求，合理利用限位开关的功能，对双面铣床进行单循环控制。硬件方面，针对主电路、控制电路、辅助电路三部分分别进行一些设计，使其能够满足现代高效率生产的发展需求，针对滑台的三大主要动作，即快进、工进和快退，分别使用不同的电磁阀在得电情况下进行动作控制，而电磁阀的是否得电取决于开关动作，只有开关满足时候才使得PLC能够执行相应的程序；软件方面，使用SWOPC-FXGP/WIN-C编程软件设计梯形图，简单易学，操作方便，在系统上满足单循环与单步运动的要求。关键词：双面铣床；PLC；自动控制DesignofAutomaticControlSystemforDouble-sidedMillingMachineBasedonPLCAbstract:Inthemodernproductionandthepartofthesmallandmedium-sizedenterprisesanduniversitiesstillwidelyusetraditionalrelaycontroldouble-sidedmillingmachine,thesedouble-sidedmillingmachineelectriccontrolsystembasedonrelays,contactdevicehardlinksbased,technologyisrelativelybackward,especiallyonthereliabilityofthecontactproblem,adirectimpactontheproductqualityandproductionefficiency.AndtheuseofPLCindouble-sidedmillingmachineforautomaticcontrol,canobtainverygoodeffect,makeitsindustrialproductionmoreeconomicalandreliableandadapttotherequirementsofsocialproductivitynow.DesignbasedonPLCdouble-sidedmillingmachine,automaticcontrolsystemisintroducedintheaspectsofsystemhardwareandsoftwaredesignidea,toFX2N-48MRPLCasthecore,toconstructaautomaticcontrolhydraulicstation,usingfourmotorbasedactionrequiresmeetsubject,reasonableutilizationoflimitswitchfunction,singlecontrolofdouble-sidedmillingmachine.Hardwareaspects,inviewofthemaincircuitandcontrolcircuit,auxiliarycircuitthreeparts,respectively,makeitsstudiestomeetthedevelopmentneedsofmodernefficientproduction,accordingtothethreemainactionslidingsets,namelyfastinto,workintoandretreatquickly,usingdifferentelectromagneticvalverespectivelyinelectricitysituationactioncontrol,andwhetherthesolenoidswitchmovement,haveelectricitydependsonwhenonlyswitchmeetthatmakesPLCcanexecutesprograms;Software,useFXGP/WIN-SWOPC-Cprogrammingsoftwaredesignladderdiagram,easytooperate,easytooperate,onthesystemmeetwithsingle-stepmovementsinglerequirements.KeyWords:Double-sidedmillingmachine;PLC;Automaticcontrol目录1概述.........................................................................................................................11.1课题概述..............................................................................................................11.2课题研究背景及发展现状..................................................................................11.3课题的研究意义..................................................................................................32双面铣床动作及电气控制要求分析.............................................................................42.1双面铣床简介......................................................................................................42.2双面铣床动作要求分析......................................................................................42.3双面铣床电气控制要求分析..............................................................................63双面铣床自动控制系统方案确定.................................................................................63.1双面铣床自动控制系统总体方案确定..............................................................63.2主电路方案确定..................................................................................................73.3软件方案确定......................................................................................................74双面铣床自动控制系统的硬件设计.............................................................................84.1主电路设计..........................................................................................................84.2液压站PLC控制系统..........................................................................................94.3系统分配电源....................................................................................................104.4辅助电路设计....................................................................................................114.5控制面板设计...................................................................................................114.6PLC的介绍及选型............................................................................................124.7铣床元器件介绍及选型....................................................................................135双面铣床自动控制系统的软件设计...........................................................................175.1PLC软件编程....................................................................................................175.2I/O地址分配表................................................................................................185.3梯形图注释.......................................................................................................195.4梯形图指令.......................................................................................................236安装调试.......................................................................................................................277结束语.................................