毕业设计--磨床电气的PLC改造

《毕业设计--磨床电气的PLC改造》由会员分享，可在线阅读，更多相关《毕业设计--磨床电气的PLC改造（33页珍藏版）》请在毕设资料网上搜索。

1、 摘要 由于工厂企业中很多磨床年代久远，其工作已远远达不到现代生产的要求。因此 有必要对旧式的常规电动机控制系统进行技术改造，以可编程序控制器取代常规的继 电器，以达到磨床的自动化控制。本文介绍了用可编程序控制器来对平面磨床控制系 统进行现代化改造，简要叙述了老式成型平面磨床的工作原理及用 PLC 进行改造设计 的方法和设计步骤，并给出 PLC 编程程序梯形图。改造后的磨床工作安全可靠，系统 运行情况良好，磨削精度更高；利用 PLC 控制磨床运行，实现了磨床启动、停止、故 障停止、紧急停止的功能，可根据运行要求灵活切换磨床的控制方式；提供过载，轻 载，断相和电压不平衡保护；现场显示运行状态，实

2、现智能化监控。并因所吸工件的 不同灵活调节电磁吸盘的电流，并且显示数值大小。从而实现了磨床运行的自动化。 PLC 控制的特点使原机床控制大大的简单化,并且维修方便,易于检查。节省大量的继 电器元件,使机床的工作效率更高。 该项技术还可推广应用于其他辅机设备或其他领域 的自动化控制改造中。 关键词关键词 可编程序控制器；平面磨床；改造 Abstract Because many grinder ages are remote in the manufacturing division, its work could not achieve the modern production by far

3、 the request . So it is necessary to carry on technological transformation to the old-fashioned regular motor control system and replace normal regulations by programmable preface controller of after electric appliances with attain grinding machine of automation control. This text introduced comes w

4、ith the programmable controller to the surface grinding machine control system to make the modernized transformation, narrated the old style formation surface grinding machines principle of work briefly and carries on the transformation design with PLC the method and the design procedure, and gives

5、PLC the programming procedure trapezoidal chart . After the reformation of grinding machine work safety credibility, he systems operation situation is good, the grinding precision is higher; Using the PLC control grinder movement, realized the grinder to start, the stop, the breakdown to stop, the e

6、mergency stop function, might cut grinders control mode nimbly according to the movement request; Provides the overload, the underloading, breaks and the voltage is not balanced protects; The scene demonstration running status, realizes the intellectualized monitoring. Because and attracts the work piece the different nimble adjustment magnet chuck electric current, and demonstration value size. Thus has realized the grinder movement automation. The PLC controls characteristic causes the ori