基于X68W万能铣床的PLC改造目录................................................................................................................................11绪论.............................................................................................................................31.1铣床简单介绍..................................................................................................31.2铣床国内外研究状况和发展趋势..................................................................31.3铣床的选型......................................................................................................51.4X62W机床特点...............................................................................................52x62w万能铣床系统工艺分析...................................................................................62.1X62W万能铣床的主要结构及运动形式......................................................62.2电气原理图.......................................................................................................72.3主电路分析......................................................................................................92.4控制电路分析..................................................................................................93系统的软件设计.......................................................................................................133.1PLC的编程语言..............................................................................................133.2PLC的系统结构和基本工作原理................................................................153.2.1PLC的系统结构...................................................................................153.2.2PLC的基本工作原理...........................................................................173.3PLC的基本功能和基本指令.........................................................................183.3.1PLC的基本功能...................................................................................183.4X62W型万能铣床PLC控制.......................................................................193.5程序流程图.....................................................................................................203.6现场信号与PLC软继电器对照表..............................................................213.7PLC程序.........................................................................................................234基于PLC控制系统优点........................................................................................254.1控制继电器存在的缺点................................................................................254.2可编程序控制器的优势、特点及功能........................................................254优点........................................................................................................2614.4调试过程........................................................................................................265结束语.......................................................................................................................276致谢...........................................................................................................................28参考文献..................................................................................................
