毕业设计说明书课题名称基于T68镗床电气控制系统的PLC改造设计起讫时间：2010年3月8日～2010年4月30日（共8周）第1页共27页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共27页T68镗床PLC改造设计说明书摘要为提高镗床控制电路的稳定性和自动化程度，延长镗床的使用寿命，降低机床的故障。分析了T68镗床的机械、电气控制原理，保留镗床主电路由PLC取代复杂的电气连线控制，设计出由PLC为镗床的控制电路。该系统开发周期仅为一周，期间完成了将镗床的控制电路用PLC梯形图实现，大大的简化了电路，从而降低机床的故障、更加便于控制、也降低了维修的难度。关键词：三菱PLC；镗床；控制电路改造T68BoringPLCReformDesignManualabstractBoringmachinecontrolcircuittoimprovethestabilityandthedegreeofautomation,toextendthelifeofboringmachine,reducemachinefailures.AnalysisoftheT68boringmachine'smechanical,electricalcontrolprinciple,toretainthemaincircuitfromtheboringmachinetoreplacethecomplexelectricalconnectionsPLCcontrol,designedfortheboringmachinebythePLCcontrolcircuit.Thesystemdevelopmentcycleisonlyaweek,willbecompletedduringtheboringmachinecontrolcircuitusingPLCladderimplementation,greatlysimplifyingthecircuit,therebyreducingthemachine'sfault,makeiteasiertocontrol,alsoreducedthemaintenancemoredifficult.第2页共27页第1页共27页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共27页Keywords:MitsubishiPLC;boring;controlcircuittransformation;第3页共27页第2页共27页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共27页目录引言…………………………………………………………………………………………………………4第一章T68镗床电气控制系统的PLC改造设计.........................................................................................51.1设计要求...........................................................................................................................................51.2设计思路...........................................................................................................................................51.3设计目的...........................................................................................................................................5第二章T68卧式镗床的基本结构及工作原理.............................................................................................62.1卧式镗床的概述及加工范围...........................................................................................................62.2T68卧式镗床的基本结构及工作原理............................................................................................62.3T68卧式镗床主要技术参数.............................................................................................................62.4电力拖动及控制特点.......................................................................................................................72.5PLC改造方案....................................................................................................................................82.6梯形图程序的设计方案...................................................................................................................82.7设计流程图说明...............................................................................................................................9第三章T68卧式镗床的电气元件表.....................................................................................................
