平面磨床的PLC控制系统设计毕业设计_计算机程序设计_计算机设计辅导_计算机设计代做_java_安卓_小程序_springboot_ssm计算机程序设计资料网

平面磨床的PLC的控制系统设计

【摘要】由于工厂企业中很多磨床年代久远，因此工作质量远远达不到现代生产的要求。所以必须要对旧式的普通电动机控制系统进行技术改造，用可编程序控制器替代常规的继电器。从而达到磨床的自动化控制。此文章介绍了用可编程序控制器对平面磨床控制系统进行现代化改造，简要描述了旧式平面磨床的工作原理以及其用PLC改造设计的方法和设计，并且给出了PLC编程程序梯形图和原理图。经过改造后的磨床工作稳定，安全性可靠。系统运行情况较好，磨削精度更高。此文利用PLC控制磨床运行，实现了磨床的起动、制动、紧急制动、故障制动的功能，可以根据运行要求灵活切换磨床的控制方式:有超载，不足载重，断相和电压不平稳的保护，还可以现场直接显示出运行的状态，从而实现智能化的监控。并且可以根据所吸工件的不同，来灵活的调整电磁吸盘的电流，并且显示其数值大小。从而实现磨床的自动化控制，用PLC的优点是使原来机床控制的过程很大程度的简单化，易于检查，并且维修方便，而且节省大量的继电器元件，使机床的工作效率有所提高。本文对M7475B平面磨床系统进行改造，M7475B磨床其原控制电路是继电器控制，接触器触点较多，故障多，维修人员工作任务量大，对于这种情况，我们用PLC控制改造其继电器控制的线路，克服了这些缺点，降低了设备的故障率，并且提高了设备使用效率。

【关键词】可编程序控制器；平面磨床；改造

[Abstract]Because many grinder in factories and enterprises in the age, their work is far less than modern production requirements. So it is necessary for the old conventional motor control system for technological transformation, to the programmable controller to replace the conventional relay. In order to achieve the automatic control of grinding. This paper introduces the use of PLC to control system of plane grinder for modernisation, briefly describes the vintage plane grinding machine working principle and using PLC to transform the design method and design, and gives the PLC programming ladder diagram and schematic diagram. After the reconstruction of the grinding machine working stable, safe and reliable. The system has good performance, higher precision grinding. This article uses the PLC control grinding operation, the grinder starting, stop, emergency stop, and failure to stop function, according to the operational requirements of the control switch grinder: flexible overload, open phase and light load, voltage is not stable, the scene shows running, intelligent monitoring. Can also be based on the absorption of different workpieces, flexible adjustment of the current electromagnetic sucker, and display the numerical size. To achieve a grinder automatic operation, using PLC is characterized in that the original machine tool control is greatly simplified, and the repair is convenient, easy to check, save a lot of relay components, so that the machine has higher working efficiency. Based on the M7475B plane grinder was reformed, the original M7475B grinder control circuit for relay control, contact more, multiple faults, operation personnel repair task, in this case, we use PLC control improvement of relay control circuit, overcomes the shortcomings, to reduce the failure rate of the equipment, improve the use efficiency of the device. Surface grinding machine of the PLC control system designe

[Key word] programmable controller；surface grinder；Transformation

第1章绪论……………………………………………….. １

1.1 PLC在电气控制系统中的应用………………………………… １

1.2 磨床的介绍………………………………………………. １

第 2 章系统总体设计…………………………………………. ３

2.1 方案论证………………………………………………. ３

2.2 PLC控制系统的控制要求………………………………….. ３

2.3 PLC控制系统设计步骤…………………………………… ４

第3章系统的硬件设计………………………………………. ５

3.3 电气设备的选择…………………………………………. ５

3.3.1 PLC的选型………………………………………….. ５

3.1.2 电动机的选择………………………………………… ５