斗式提升机料斗专用焊机控制系统的设计与研究

发布时间：2018-01-14 20:32

本文关键词：斗式提升机料斗专用焊机控制系统的设计与研究　出处：《石河子大学》2017年硕士论文　论文类型：学位论文

【摘要】：在各类现代化的工业和企业中,斗式提升机是生产过程中组成流水线、作业运输线和自动化生产线不可或缺的环节。在运输物料过程中,随着料斗与传动链、物料等的磨损,使得料斗成为消耗品,使用寿命在一年左右。新疆某化工企业对配件料斗的加工一直采用手工焊接。传统的手工焊接存在着诸多问题,比如生产效率低成本高、产品质量不稳定、人工劳动强度大、焊接环境差等。为此设计了一种基于运动控制卡的料斗自动焊机控制系统,结合相应的机械系统,以满足各类型号料斗的自动焊接。为实现斗式提升机关键零部件料斗焊接过程中的自动化控制,将运动控制卡和VB6.0软件应用于料斗自动焊机控制系统的硬件配置和软件实现中,并系统阐述了料斗自动焊机控制系统的硬件、软件的组成与实现。本文主要研究内容如下:1、以斗式提升机料斗的焊缝为研究对象,通过对料斗的焊缝的结构分析,结合分析结果对焊缝结构进行改进。针对改进后的焊缝结构进行焊接工艺的分析,选定了混合气体保护焊的焊接方法,并确定了混合气体的成分,选定了相应的焊材及相关工艺参数。通过焊缝结构工艺的研究和选型,结合料斗焊接的工艺要求,提出了斗式提升机料斗焊缝自动焊接的基本技术要求。2、根据斗式提升机料斗自动焊接的基本技术要求,设计了斗式提升机料斗专用焊机总体结构,并在此基础上完成了其机械本体的设计。此外选定了控制系统的方案为NC嵌入IPC型的开放式数控系统,并阐明了控制系统的组成结构,介绍了控制系统的工作原理。最后选定的执行机构的控制方案为交流伺服电机和伺服驱动器组成的高精度闭环控制系统。3、结合控制系统总体方案完成了控制系统硬件结构设计,在此基础上确定了运动控制卡及工控机的型号;其次完成了硬件结构中的伺服系统的选用,选定了交流伺服电机及相对应的伺服驱动器。最后结合相关焊接工艺参数,确定了焊接系统中焊接电源和送丝机的型号。4、结合控制系统总体方案完成了系统软件的整体设计,软件系统的总体设计主要包括主机应用程序和下位机控制程序两部分。其次完成了主机应用程序的设计,主要为上位机IPC系统软件功能需求分析和人机交互界面的设置。最后结合焊接过程主程序流程图和固高运动控制卡的相关程序控制指令完成了下位机运动及焊接程序的设计。5、按照设计的控制系统硬件结构完成了控制系统试验台的安装,结合安装好的试验台进行了一系列控制系统的调试,完成对焊接平台执行机构、控制系统内部硬件结构以及其他系统的控制调试,通过对控制系统试验台的测试,整个控制系统能按照设计要求,控制精度满足设计要求,与设计理论相符,证明了本控制系统在实际工程应用中的可行性。
[Abstract]:In all kinds of modern industries and enterprises, bucket hoist is an indispensable link of assembly line, operation transportation line and automatic production line in the process of production. In the process of transporting materials, with hopper and transmission chain. The wear of materials makes the hopper become consumable, and its service life is about one year. A chemical enterprise in Xinjiang has been using manual welding for the spare parts hopper. There are many problems in traditional manual welding. For example, the production efficiency is low, the cost is high, the product quality is unstable, the manual labor intensity is high, the welding environment is poor, so a control system of the hopper automatic welding machine based on the motion control card is designed, combined with the corresponding mechanical system. In order to meet the automatic welding of various types of hopper. In order to realize the automatic control of hopper welding process of the key parts of bucket hoist. The motion control card and VB6.0 software are applied to the hardware configuration and software implementation of the hopper automatic welding machine control system, and the hardware of the hopper automatic welding machine control system is systematically expounded. The main contents of this paper are as follows: 1. The weld seam of hopper hopper is taken as the research object, and the structure of the weld seam of hopper is analyzed. Based on the analysis results, the weld structure is improved. According to the analysis of the welding process of the improved weld structure, the welding method of mixed gas shielded welding is selected and the composition of the mixed gas is determined. Through the research and selection of weld structure technology, combined with the requirements of hopper welding process, the basic technical requirements of automatic welding of bucket hoist hopper are put forward. 2. According to the basic technical requirements of hopper automatic welding for bucket hoist, the overall structure of special welding machine for bucket hoist hopper is designed. On this basis, the design of the mechanical ontology is completed. In addition, the scheme of the control system is selected as NC embedded IPC open CNC system, and the structure of the control system is expounded. The working principle of the control system is introduced. Finally, the control scheme of the actuator is composed of AC servo motor and servo driver with high precision closed-loop control system .3. The hardware structure of the control system is designed based on the overall scheme of the control system, and the model of the motion control card and the industrial control computer is determined. Secondly, the selection of the servo system in the hardware structure is completed, and the AC servo motor and the corresponding servo driver are selected. Finally, the related welding process parameters are combined. The welding power source and wire feeder model. 4 in the welding system are determined. The overall design of the system software is completed combined with the overall scheme of the control system. The overall design of the software system mainly includes the host application program and the lower computer control program. Secondly, the design of the host application program is completed. It is mainly for the function requirement analysis of IPC system software and the setting of man-machine interface. Finally, combined with the main program flow chart of welding process and the related program control instructions of the fixed height motion control card, the motion of the lower computer is completed. Welding procedure design 5. 5. According to the hardware structure of the designed control system, the installation of the control system test bench is completed, and a series of debugging of the control system is carried out in combination with the installed test bed, and the welding platform execution mechanism is completed. The hardware structure of the control system and the control debugging of other systems, through the test of the control system test bench, the whole control system can meet the design requirements according to the design requirements, the control precision meets the design requirements, which is consistent with the design theory. The feasibility of the control system in practical engineering application is proved.
【学位授予单位】：石河子大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG43;TH225

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