基于PLC智能控制在镗床改造中的应用.doc

1、湘潭职业技术学院2015届毕业设计 班 级： 12机电301 姓 名： 文 璞 指导教师： 黄 冬 来 2015 年 05 月 25 日毕 业 设 计项目说明书 设计题目： 基于PLC智能控制在镗床改造中的应用 专 业： 机电一体化技术 班 级： 12机电301 学 号： 20120010111 设 计 者： 文 璞 指导教师： 黄 冬 来 完成时间： 2015年5月25日 湘潭职业技术学院医电学院基于PLC智能控制在镗床改造中的应用摘 要 镗床是冷加工中使用比较普遍的设备它主要用于加工精度、光洁度要求较高的孔以及各孔间的距离要求较为精确的零件(如一些箱体零件),属于精密机床。镗床除能完成锁孔

2、工序外在万能镗床上还可以进行键、钻、扩、车及铣等工序。因此,铿床的加工范围很广。 进行对T68型卧式镗床的结构和工作原理进行了介绍,通过镗床继电器控制系统的分析,提出了基于PLC改造的总体方案和框架设计。对系统的输入、输出点进行统计,根据PLC的选型相关规定和输入输出的总点数,选用日本三菱公司生产的FXZN一48MR可编程序控制器。,分配了PLC的1/0地址,设计出PLC的外接线图。介绍了PLC常见的编程方法,采用逻辑代数设计方法,设计了T68铿床PLC控制系统的程序。这种方法易学易用,成功率高,设计复杂的控制程序可以节约大量的设计时间。通过GXSimulator6一C软件进行程序仿真,在此基

3、础上,进行了现场安装、调试。针对系统调试、安装以及运行过程中出现的问题,进行了分析,提出了解决办法和注意的事项。从硬件和软件两个方面采取措施,提高PLC控制系统的抗干扰能力。 【关键词】:可编程控制器:梯形图;镗床;改造;调试Application of PLC intelligent control in boring machine transformation based on Abstract：The development of electron and information technology, for our machine tool equipment modernizat

4、ion provides strong technical support. In order to make full use of equipment effectiveness, rapidly improving processing technology , more and more to the traditional machine tool to carry out technological transformation of enterprises invest a lot of capital and technology,and achieved good resul

5、ts. Using the PLC module, inverter, control monitoring equipment electrical digital control system, to realize the control , human-computer interaction, automatic processing, expansion of processing capacity, improve the efficiency, has become an effective way of technological transformation of ente

6、rprises Boring is used in the manufacture of the equipment which is mainly used precision, smoothness requirement high hole and the distance between the holes require a more precise parts (such as some body parts),which belongs to the precision machine tool. Boring machine can complete process exter

7、nal universal boring machine can also be used for drilling,reaming, car keys, and milling processes. Therefore, the processing range is very wide steel bed. The structure and working principle of T68 type horizontal boring machine is introduced in this paper, through the analysis of the boring machi

8、ne relay control system, put forward the overall design scheme and framework based on . Input, output of the system according to the statistics, the total number of the relevant provisions of PLC and the selection of input and output,the Japanese production of Mitsubishi Co FXZN 48MR programmable co

9、ntroller.The distribution of PLC, 1/0 address, design the external wiring diagram of PLC.Introduction to the PLC programming method is common, the algebra of l method, designed the T68 control system bed PLC process. This method is easy to use, high success rate, control the complexity of the progra

10、m design can save a large amount of design time. Program simulation byGXSimulator6 C software, on this basis, on-site installation, commissioning. In system commissioning, installation and operation process, are analyzed, and puts forward some matters needing attention and solution. Take measures fr

11、om two aspects of hardware and software, improve the anti-interference ability of PLC control system.The thesis finally summarizes the results of the research, based on the authors research direction, discusses programming and interface technology used in , and the prospect of further put forward th

12、e direction of future research.keyword: programmable controller:the ladder diagram; boring machine;transformation; debugging.目 录中文摘要 中文关键词 .英文摘要 英文关键词.前言.第一章 我国机床行业的现状和面临的问题.1 1.1我国机床行业的现状和面临的问题.1 1.2进行设备数控系统改造的必要性分析.1 1.3进行设备控制系统改造的可行性分析.2第二章 总体方案的拟定.3 2.1原设备现状.3 2.1 1 T68镗床简介.3 2.1.2原有继电器控制线路存在的问题.9 2.2 T68镗床控制系统改造总体技术方案.10 2.2.1 PLC控制系统选型,方案拟定.10 2.2.2 PLC的结构和工作原理.11第三章 T68型镗床的PLC改造系统的硬件设计.12 3.1PLC的介绍.12 3.1.1PLC概述.12 3.1.2PLC的特点.,.12 3.2 PLC控制系统设计方法.15 3.2.1 PLC控制系统设