基于PLC的标准布氏硬度机的自动控制系统  

Automatic control system for standard Brinell hardness machine based on PLC

作　　者：张巍 骆昕 林家春[1] ZHANG Wei;LUO Xin;LIN Jia-chun(College of Mechatronics,Beijing University of Technology,Beijing 100124,China;Beijing Institute of Metrology and Detection,Beijing 100029,China)

机构地区：[1]北京工业大学机电学院,北京100124 [2]北京市计量检测科学研究院,北京100029

出　　处：《机电工程》2020年第2期211-215,共5页Journal of Mechanical & Electrical Engineering

基　　金：北京市科技计划资助项目(Z171100002817007)

摘　　要：针对直接加荷式标准布氏硬度机的继电器控制系统存在的布线繁琐、调试不易等问题,对硬度机的工作流程、运行时的稳定性、限位保护以及加载试验力的精度等方面进行了研究,分析了PLC控制伺服系统的基本原理,研制了一套基于可编程逻辑控制器、触摸屏以及伺服系统的自动控制系统。以CX-programmer为开发平台,运用PLC、触摸屏技术和梯形图编程语言,建立了控制系统的软件,实现了硬度机加卸荷全过程的自动控制;并在此基础上,对该系统进行了整体调试与布氏硬度验证试验。研究结果表明:该硬度机控制系统运行平稳,提高了硬度机检定的可靠性与自动化水平;同时,控制系统还具有结构简单、效率高、适应性广等优点。Aiming at the problems of complicated wiring and difficult debugging when controlling the relay control system of the direct-loading standard Brinell hardness machine,the work process of the hardness machine,the stability of the runtime,limit protection and the precision of the load test force and so on were studied,the basic principle of PLC control servo system was analyzed.A set of automatic control system based on the programmable logic controller,touch screen and servo system was developed.With CX-programmer as the development platform,PLC and touch screen technology and ladder programming language were used to establish the control system software,which realized the automatic control of the whole process of hardness machine loading and unloading,and the whole system was debugged and Brinell hardness verification test was carried out.The results indicate that the control system runs smoothly,improves the reliability and automation level of the hardness machine verification,and has the advantages of simple structure,high efficiency and wide adaptability.

关 键 词：标准布氏硬度机 自动控制系统 PLC 伺服系统 继电器控制系统 CX-programmer 

分 类 号：TH871.5[机械工程—仪器科学与技术] TP273[机械工程—精密仪器及机械]