i-DNC设备联网监控系统的研究

发布时间：2018-06-27 07:11

本文选题：数控机床 + i-DNC系统　；参考：《江南大学》2017年硕士论文

【摘要】：伴随着计算机技术、网络技术与传感器技术的不断发展,21世纪全新一轮的科技、产业革命逐渐兴起,全球科技创新也涌现出新的发展动力。继德国发布“工业4.0”战略和美国提出先进制造业国家战略计划之后,我国在2015年公布了“中国制造2025”战略,以工业化与信息化深度融合为基础的智能制造已成为打造国家制造业竞争新优势的突破口和主攻方向。制造业数字化、网络化、智能化、人性化是智能制造的核心目标,而数控设备的联网监控正是智能制造的基础环节,实现数控设备的网络化实时监控与管理,能够有效地提高数控设备的利用率,降低机床故障率,对提高企业的管理水平和增加企业的核心竞争力有极大的推进作用。本论文旨在研究一种通用的数控设备网络化实时监控与管理系统。通过对企业网络化、信息化实际需求分析,提出了基于PLC技术、数控技术、计算机技术以及无线传输技术的一种新型分布式数控设备信息采集、集中管理的系统解决方案,并设计开发了i-DNC设备联网监控系统。本论文主要研究内容如下:1.根据企业设备联网的实际需求,结合数控机床开放的接口与可采集的信息,提出底层数据采集解决方案。通过数控机床自带的RS232通讯接口,实现数控程序的上传、下载及DNC在线加工等功能。通过宏指令反馈实现对系统内部加工数据的采集,通过外置电流传感器实现对数控机床各电机轴电流信号的采集,应用SMART 200 PLC与机床内部PLC连接,实现对机床I/O输出信号的采集,如换刀信号、冷却液开关、机床工作状态等。2.对当前已有的数控机床通信方式进行分析,提出基于工业以太网、PLC和无线串口服务器组成数控车间网络通讯方案。该方案应用Modbus-RTU通讯协议,实现与电流传感的通讯,采集数控机床各电机轴在加工过程中的电流情况。使用OPC通讯技术,实现PLC与上位管理系统的通讯连接,充分发挥PLC抗干扰能力强,通讯稳定,并运用SmartLine1000IE组态软件编写良好的人机交互机床状态监测界面。通过无线串口服务器,实现串口转以太网的通讯方式,解决工程中心布线难和串口传输距离短的问题,有效的实现了i-DNC管理系统与机床通讯,达到对数控机床监控的目的。3.以面向对象的编程方法,应用模块化设计思路开发监控系统。本软件基于Windows操作系统,采用.NET平台下WPF技术,使用C#编程语言、VS2010开发工具开发机床监控系统,采用SQL SERVER2008数据库对监控系统内部相关信息的储存与管理。研究结果表明,i-DNC设备联网监控系统能实时监测机床加工状态及采集加工信息,具有通信稳定、分析结果可靠、抗干扰能力强、易于管理、可扩展性好等特点,具有良好的应用推广价值。
[Abstract]:With the continuous development of computer technology, network technology and sensor technology, a new round of science and technology has emerged in the 21st century. Following the publication of the "Industry 4.0" strategy by Germany and the national strategic plan for advanced manufacturing industry put forward by the United States, China published the "made in China 2025" strategy in 2015. Intelligent manufacturing based on the deep integration of industrialization and information technology has become the breakthrough point and the main direction to build the new competitive advantage of the national manufacturing industry. The digital, networked, intelligent and humanized manufacturing industry is the core goal of intelligent manufacturing. The networked monitoring of NC equipment is the basic link of intelligent manufacturing, which realizes the networked real-time monitoring and management of NC equipment. It can effectively improve the utilization rate of CNC equipment, reduce the failure rate of machine tools, and promote the management level of enterprises and the core competitiveness of enterprises. The purpose of this paper is to study a general networked real-time monitoring and management system for CNC equipment. Based on the analysis of the actual demand of enterprise network and information, a new distributed information collection and centralized management system solution based on PLC, numerical control, computer and wireless transmission technology is put forward. And I-DNC equipment network monitoring system is designed and developed. The main contents of this thesis are as follows: 1. According to the actual demand of enterprise equipment networking, combined with the open interface of NC machine tool and the information that can be collected, the solution of bottom data acquisition is put forward. Through the RS232 communication interface of CNC machine tool, the functions of uploading, downloading and DNC on-line machining are realized. The internal machining data is collected by macro command feedback, and the current signal of each electric axis of CNC machine tool is collected by external current sensor. The SMART200 PLC is used to connect with the PLC inside the machine tool. I / O output signals can be collected, such as tool changing signal, coolant switch, machine tool working state, etc. Based on the analysis of the existing communication modes of CNC machine tools, the communication scheme of CNC workshop network based on industrial Ethernet PLC and wireless serial port server is put forward. In this scheme, Modbus-RTU communication protocol is used to realize the communication with current sensing, and the current situation of each electric shaft of NC machine tool is collected in the process of machining. OPC communication technology is used to realize the communication connection between PLC and the upper management system. The PLC has strong anti-interference ability and stable communication. The SmartLine1000IE configuration software is used to compile a good human-computer interactive machine tool state monitoring interface. Through wireless serial port server, the communication mode of serial port to Ethernet is realized, which solves the problems of difficult wiring and short transmission distance of serial port in engineering center, realizes the communication between i-DNC management system and machine tool effectively, and achieves the purpose of monitoring NC machine tool. Based on the object-oriented programming method, the monitoring system is developed by using the modular design idea. This software is based on Windows operating system, adopts WPF technology under. Net platform, uses C # programming language VS2010 development tool to develop machine tool monitoring system, and uses SQL server 2008 database to store and manage the relevant information inside the monitoring system. The research results show that the system can monitor the machining status of machine tools and collect processing information in real time. It has the characteristics of stable communication, reliable analysis results, strong anti-interference ability, easy management, good expansibility, and so on. It has good application and promotion value.
【学位授予单位】：江南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP277;TG659

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