用PLC改造M1420万能外圆磨床的电气控制系统

发布时间：2018-02-27 22:20

本文关键词： 磨床可编程控制器改造梯形图触摸屏　出处：《湖北工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：由于工厂中的许多老式普通磨床的机床电气部分一直使用继电器-接触器控制并且年代也比较久远,其工作已经不能满足现代工业生产的技术要求,而且由于线路装配的繁琐及电器元件的损耗,致使机床的故障率较高。可是直接淘汰旧设备更换新的设备则需要一笔较大的费用,如果对老式普通磨床的继电器-接触器控制系统进行相关改造,用可编程控制器来取代继电器-接触器,则可以为企业节省大量的资金。也可以使机床的精度以及功能得到全面的更新发展,以此实现机床的自动化控制。磨床是运用磨具来磨削加工工件表层的机床。大部分的磨床是利用砂轮来磨削加工,小部分磨床使用油石、砂带等磨具和游离磨料进行加工。磨床是众多类型机床中种类最丰富的金属磨削机床,主要可以分为:内圆磨床、平面磨床、外圆磨床、工具磨床等。本次改造运用PLC对M1420型万能外圆磨床的控制电路进行改造。以此解决老式继电器-接触器电路中存在的线路复杂,故障诊断和排除困难等难题,也降低了设备的故障率。由于PLC具有很高的可靠性、抗干扰能力强、容易掌握、体积小、操作便捷、功能强大。因此,用PLC改造后的M1420型万能外圆磨床不仅能完成原有的功能特点,还能有很好的稳定性、以及出现故障后易于诊断和维修等特点。本次设计的重点是将M1420万能外圆磨床的继电器-接触器控制电路系统改成PLC控制系统以及利用三菱的GX Developer编程软件编写PLC梯形图,编写完成后,利用GX Simulator6-C三菱仿真软件进行仿真测试,最后用GT Designer 3触摸屏软件模拟动画效果。
[Abstract]:Since the electrical parts of many of the old conventional grinders in the factory have been controlled by relay-contactors and have been older, their work has not been able to meet the technical requirements of modern industrial production. And because of the red tape of wiring assembly and the wear and tear of electrical components, the failure rate of machine tools is high. However, it takes a lot of money to replace the old equipment and replace the new equipment directly. If the relay-contactor control system of the old grinding machine is modified, a programmable controller is used to replace the relay-contactor, It can save a lot of money for the enterprise. It can also make the precision and function of the machine tool completely updated and developed. In this way, the automatic control of the machine tool is realized. The grinder is used to grind the surface layer of the workpiece. Most grinding machines use grinding wheels to grind the workpiece, and a small part of the grinder uses oil stone. Grinding machine is the most abundant kind of metal grinding machine in many kinds of machine tools. It can be divided into three parts: inner grinding machine, plane grinding machine, outer grinding machine, The control circuit of the M1420 universal round grinder is modified by PLC. In order to solve the problems of circuit complexity, fault diagnosis and troubleshooting in the old-style relay-contactor circuit, etc. Because PLC has high reliability, strong anti-interference ability, easy to master, small size, convenient operation and powerful function, The M1420 universal round grinder modified by PLC can not only complete the original function characteristics, but also have good stability. The emphasis of this design is to change the relay-contactor control circuit system of M1420 universal round grinder into PLC control system, and to use Mitsubishi's GX Developer programming software to compile PLC trapezoid diagram. After writing, the simulation test is carried out by using GX Simulator6-C Mitsubishi simulation software, and finally, the animation effect is simulated by GT Designer 3 touch screen software.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273

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