液压动力滑台的控制

题目液压动力滑台的控制【摘要】本论文主要阐述了液压动力滑台是组合机床用来实现进给运动的通用部件，液压动力滑台在组合机床中已得到广泛的应用。液压动力滑台通过液压传动系统可以方便地进行无级调速，正反向平稳，冲击力小，便于频繁地换向工作。配置相应的动力头、主轴箱及刀具后可以对工件完成各种孔加工、端面加工等工序，它的性能直接关系到机床质量的优劣。本设计是在充分分析了液压动力滑台的液压传动系统及工作原理的基础上，通过继电器一接触器控制与PLC控制方案的对比我选择了PLC控制，根据控制要求选择了PLC的型号，在硬件设计中画出了PLC的外部接线图；在软件设计中，设计了液压动力滑台PLC控制系统的软件流程图和梯形图，实现了控制要求。关键词：液压，动力滑台，PLC，控制Abstract:ThecaptionHydraulicPowerSlidingTableisacombinationoftoolsusedtoachievethefeedmovementofthegeneralcomponents,hydraulicpowerslideinthemodularmachinetoolhasbeenwidelyused.HydraulicPowerSlidingTablebyhydraulicvariablespeeddrivesystemcanbeeasilycarriedher,positiveandnegativetostable,theimpactforceissmall,easytoworkfrequentlychange.Configurationcorrespondingpowerhead,spindleandtoolboxontheworkpiececanbecompletedaftertheprocessingofvariousholes,faceprocessingandotherprocesses,itsperformanceisdirectlyrelatedtothemeritsofqualitymachinetools.Thedesignisafullanalysisofthehydraulicpowertransmissionandhydraulicslidesetsbasedontheprinciple,byacontactorcontrolrelayandPLCcontrolprogramforcomparisonIchosethePLCcontrolandPLCbasedcontrolrequirementsofthemodelchosen,InthehardwaredesigntodrawtheexternalwiringdiagramofPLC;insoftwaredesign,thedesignoftheHydraulicPowerSlidingTablePLCcontrolsoftwareflowchartandladder,toachievethecontrolrequirements.Keywords:Hydraulic,PowerSlidingTable，PLC，control目录前言......................................................................................................................................................41概述......................................................................................................................................................51.1液压动力滑台的应用...................................................................................................................51.2液压与气动的特点.......................................................................................................................51.2.1液压传动有以下一些优点..................................................................................................51.2.2液压传动的缺点..................................................................................................................61.2.3气压传动的优点..................................................................................................................61.2.4气压传动的缺点..................................................................................................................61.3液压系统实例...............................................................................................................................71.4继电器—接触器控制与PLC控制方案的比较...........................................................................71.4.1继电器—接触器控制的优缺点..........................................................................................71.4.2PLC在液压动力滑台中的应用...........................................................................................82液压动力滑台液压传动系统及工作原理..........................................................................................92.1功能结构......................................................................................................................................92.2液压传动系统及工作原理..........................................................................................................92.2.1液压传动部分的工作原理..................................................................................................92.2.2电气部分的简介及工作原理............................................................................................113液压动力滑台PLC控制系统的设计................................................................................................153.1硬件的设计................................................................................................................................153.2软件的设计................................................................................................................................163.2.1软件流程图的设计............................................................................................................163.2.2梯形图的设计....................................................................................................................18结束语.............................................................................................................................................21谢辞..................................................................................................................................................22文献..................................................................................................................................................23前言液压动力滑台是组合机床用来实现进给运动的通用部件，液压动力滑台在组合机床中已得到广泛的应用。液压动力滑台通过液压传动系统可以方便地进行无级调速，正反向平稳，冲击力小，便于频繁地换向工作。配置相应的动力头、主轴箱及刀具后可以对工件完成各种孔加工、端面加工等工序[1~2]，它的性能直接关系到机床质量的优劣。它利用液压传动系统实现滑台向前或向后的运动，由液压缸的左右运动来拖动滑台在滑座上移动，再由电气控制系统控制液压传动系统，实现滑台的工作循环。传统的液压传动系统是由电气控制线路控制，由于这种控制线路的触点多，接线复杂，可靠性低，灵活性差，功耗高，而且维修困难，其大量的硬件接线使系统可靠性降低，也间接地降低了设备的工作效率影响了加工质量，因此越来越满足不了现代化生产过程的复杂多变的控制要求。现采用PLC对此系统进行控制，能很方便的实现多种复杂的自动工作循环，使用简单，编程方便，可靠性高，通用性和灵活性强，采用PLC控制液压系统完成基本的动作—液压缸的自由进退，从而实现液压动力滑台的进给运动。YT4543型液压动力滑台的工作循