激光切割论文：基于PLC的切割机运动控制系统的设计

1、激光切割论文:基于PLC的切割机运动控制系统的设计【中文摘要】激光切割机广泛应用在各个行业中,但我国的激光切割机大多数是品质较低的C02激光切割机,其中激光器功率低、加工的工件表面精度与质量都比较差,整机的柔性与稳定性也亟待改进,其中的控制系统是国外的通用机床控制器,因此控制系统不具有开放性,很难在此基础上进行二次开发,很难把图形编程软件集成到控制系统里面。随着信息技术产业的不断发展和工业自动化程度不断的提高和产业的不断升级,PLC、触摸屏、运动控制单元的应用变得越来越普遍,对激光切割机的改造和技术更新、对其运动控制系统的研究成为必然。基于此,本文提出了本课题的研究方向。阅读了大量有关激光切割

2、机的文献资料,了解了激光切割机在国内外的发展现状,深刻的认识了PLC、触摸屏、运动控制单元的发展状况以及基本原理。分析了激光切割机装置的工作原理,选择了此运动控制方案,即决定开发一种基于PLC、触摸屏、运动控制单元的激光切割机运动控制系统。本系统利用触摸屏输入轨迹再进行简单的按钮操作就能在工件上切割所预定的轨迹形状,有两种操作模式,即手动模式和自动模式。为了完成此控制方案,本课题进行了控制系统硬件和软件的设计,所做的工作主要有以下几个方面。1.了解了激光切割机现状,提出了三种控制方案,并且经过三种方案各自优缺点的比较,最终选择基于触摸屏、PLC、运动控制单元等组建一套激光切割机运动控制系统。2

3、.对控制装置的硬件进行了挑选,选用NTST631C型号的触摸屏,选用CS1G型号的PLC,选用OMRON MC221型号的运动控制单元。介绍了各个部分的构成、各个部件的操作以及它们之间的通信。3.根据系统的控制要求,进行了触摸屏界面设计,包括手动/自动操作选择界面、直线轨迹运动、圆弧轨迹运动、椭圆弧轨迹运动、多边形轨迹运动、抛物线轨迹运动等众多轨迹的参数设置界面;编制了与触摸屏相对应的PLC初始化程序、传送数据程序和调用G代码的程序等。在运动控制单元的编程软件CX-motion中,针对各轨迹编制了G代码程序,并且对运动轴的各项控制进行了设置。本系统工作可靠性高、稳定性强。使用触摸屏作为控制界面

4、,更加的人性化,是人机对话更加的方便快捷。实现了轨迹控制功能,尤其是使用PLC强大的计算功能,实现了难以实现的轨迹控制。【英文摘要】Laser cutting machine is widely used, but the majority is of lower-quality, which are CO2 laser cutting machine.China product laser cutting machine, in which the laser power is low, cutting the gap is very wide, the processing of the

5、work piece surface accuracy and quality is poor, and the stability of the whole machine needs to be improved flexibility. Motion control system of Laser Cutting Machine is still using a foreign general machine controller, the resulting problem is that the system does not have the open property, on w

6、hose basis to build up a second development in the attempt, so it is difficult to integrate graphical programming software into thecontrol system inside. But with the information technology industry continuously developing and with industrial automation continuously improving, PLC (programmable logi

7、c controller, touch screen, motion control unit applications become more common, but also with the continuous improvement of industrial upgrading, the transformation and technology updates of laser cutting machine become a necessity, laser cutting machine motion control system has become inevitable.

8、 Based on this, the research topic is proposed.By reading a lot of literature on the laser cutting machine development at home and abroad, the PLC, touch screen, motion control unit and the development of the basic principles are reviewed. By analyzing the working principle of the Laser cutting mach

9、ine device, this motion control program is selected, and motion control systems is developed of the laser cutting machine which is based on PLC, touch screen, motion control unit.So a simple button can be on operation to cut the work piece by a predetermined trajectory shape.To complete the correspo

10、nding control program, design work is made on the control system hardware and software. Present paper has already done research work in the following areas:1. After the understanding of laser cutting machine, three control programs is proposed, and through the comparisonof advantages and disadvantag

11、es of three options, but also on the actual situation, the third selection is made which based on the touch screen, PLC, motion control unit to set up a motion control systems of laser cutting machine.2. Hardware devices are selected, including touch screen models as NTST631C, models of PLC as CS1G,

12、 Motion Control Unit model as OMRON MC221. And communication between them is described.3. According to the system control requirements, a touch screen interface is designed, including manual/automatic operation select screen, linear trajectory, trajectory arc, elliptical arc trajectory, polygon traj

13、ectory, parabolic trajectory parameters, and many trace interface; APLC touch screen is prepared to the initialize procedure, and to convey data which call G code programs and procedures. In the CX-motion programming software of the motion control unit, the trajectory G code program is developed, an

14、d the movement control of axis was set.Operational reliability and the system stability become higher. Using the touch screen as the control interface makes it much more humane, and human-computer dialogue is even more convenient. Trajectory control functions are Achieved, particular difficult traje

15、ctory control is achieved by the use of powerful computing of PLC.【关键词】激光切割 PLC 触摸屏运动控制单元【英文关键词】laser cutting PLC touch screen Motion Control Unit【目录】基于PLC的切割机运动控制系统的设计摘要4-6Abstract6-7目录8-11 1 引言11-19 1.1 课题研究背景及意义11-13 1.1.1 激光切割机的发展与应用11-12 1.1.2 我国的激光切割机的现状12 1.1.3 研究本课题的意义12-13 1.2 PLC技术的研究与发展13

16、-15 1.3 触摸屏技术的研究与发展15-16 1.4 运动控制器和发展和应用16-18 1.5 主要研究内容的结构安排18-19 2 激光切割机的控制系统方案设控制系统方案设计20-24 2.2.1 激光切割机控制系统控制要求20-21 2.2.2 控制系统设计方案21-22 2.2.3 控制系统硬件总体结构22-24 3 运动控制系统硬件设计24-40 3.1 PLC24-30 3.1.1 PLC的硬件组成24-25 3.1.2 PLC的工作原理25-27 3.1.3 CS系列PLCNT631C通信端口和通信30 3.2.2 NT631C的作用与操作30-32 3.2.3 触摸屏画面简介32 3.3 运动控制32-40 3.3.1 运动控制概述32-33 3.3.2 OMRON MC221运动控制器的简介及性能33-34 3.3.3 MC支持软件介绍34-38 计 40-72 3.3.4 G 代码的介绍 38-40 4.1 触摸屏画面设计 40-44 4 控制系统的程序设 4.1.1 触摸屏软 4.2 件 NTST 的使用 40-42 4.1.2 主画面的制作 42-44 自动模式下运动控制程序设计 44-66 面的制作 44-46 46-48 计 53-56 4.2.1 自动模式下的画 4.2.2 自动模式下的