题目：数控车床电动刀架PLC控制的设计摘要数控车床今后将向中高当发展，经济型数控刀架配套，采用电动刀架，预计近年来对数控刀架需求量将大大增加。数控刀架的发展趋势是：随着数控车床的发展，数控刀架开始向快速换刀和伺服驱动方向发展。本部分主要对常州宏达公司生产的LD4B电动刀架四工位立式电动刀架的PLC车床控制设计，并对电动刀架的电路设计，从刀架的结构和工作原理深刻分析，着重研究了数控机床刀架的机械结构以及电气控制原理，PLC控制，霍尔元件的原理机应用。回转刀架的换刀动作分为刀盘抬起、刀盘转位和刀架锁紧三个动作，刀盘转位则由普通三相异步电动机来驱动。刀盘转位动作的实现经以下步骤：数控系统发出刀盘转位的命令→三相异步电动机启动→涡轮蜗杆转动→刀架主轴转动→实现刀盘转位。关键词：经济型数控车床；车床刀架；PLC控制电动刀架AbstractNumericalcontrollathe,willinthefuturehighwhentodevelopment,economicl,inrecentyearsonthenctoolisexpectedtodemandwillincreasegreatly.Nctoolisthedevelopmenttrendof:alongwiththedevelopmentoftheCNClathe,CNCtoolbegantochangecuttersquicklyandservodrivedirection.ThemainpartofchangzhouHTCcompanyproducestheLD4Belectrictool4LabourverticalelectrictoolPLClathecontroldesign,andtheelectrictoolcircuitdesign,toolfromthestructureandworkingprincipleofprofoundanalysis,thispaperstudiesthenumericalcontrolmachinetoolandmechanicalstructureoftheelectriccontrolprinciple,PLCcontrol,theprincipleofthehallelementmachineapplications.Rotarytoolforknifeactionsaredividedintotheknifedishupthe,theknifedishinversionandtoolcarrierlockthreemovements,theknifedishinversionisbyordinarythree-phaseasynchronousmotortodrive.Theknifedishinversionofthefollowingstepstoachievetheaction:thenumericalcontrolsystemknifedishoutthecommandoftheinversionthree-phaseasynchronousmotorstartingrotationaxisrotationwormturbineenoughtorealizetheknifedishinversion.Keywords:economicnumericalcontrollathe,Lathetool;PLCcontrolelectrictool目录1绪论......................................................................................................................................11.1课题的研究背景.......................................................................................................11.2课题的来源及意义...................................................................................................12刀架控制系统硬件组成.......................................................................................................42.1刀架的有关概况.......................................................................................................42.1.1刀架的产生...................................................................................................42.1.2刀架的分类.......................................................................................................42.1.3刀架的几种典型结构...................................................................................42.2四工位刀架的组成...................................................................................................52.3四工位刀架的机械结构...........................................................................................72.4四工位刀架控制电路的组成...................................................................................93PLC控制车床刀架...........................................................................................................113.1刀架的选用................................................................................
