冷凝器自动转台焊机的研制

发布时间：2018-12-11 15:39

【摘要】：本课题对平行流冷凝器接管焊接技术进行了研究,设计研发了一套适用于自动化生产的冷凝器自动转台焊接系统。首先,论文分析了平行流冷凝器接管焊接的难点以及手工焊接的生产方式严重制约着冷凝器行业的发展。在此基础上,从焊接自动化水平现状、铝合金制品环缝焊接工艺、焊接设备现状以及燃气控制研究现状四个方面研究了国内外焊接的现状,提出冷凝器自动转台焊机的研发对于国内冷凝器行业的发展具有重要的现实意义。其次,论文结合火焰焊接的具体工艺,参考厂家需求提出了冷凝器自动转台焊机的整机设计方案,系统分为控制单元、执行单元、调节单元和系统软件四个部分。控制单元协调控制各个部件有序工作,避免相互干扰,确保焊接实现;执行单元是系统动作的执行机构,包括了转台部分、预热部分、焊接部分和冷却部分;调节单元主要为系统提供燃烧气体;系统的软件设计包括了人机交互界面和PLC软件两部分内容。为了保证气体燃烧的稳定性,论文为调节单元添加了增量式PID控制算法。设计了控制器并详细介绍了控制器参数设定的方法,通过工程整定实验得出具体参数值。最后,论文对控制算法和系统设计指标进行了实验验证。实验结果表明气体流量调节时波动小,调节迅速准确,焊接火焰控制效果良好,且系统指标均能够满足设计的需求。
[Abstract]:In this paper, the welding technology of parallel flow condenser nozzle is studied, and a set of automatic turntable welding system for automatic production is designed and developed. Firstly, the paper analyzes the difficulties of parallel flow condenser nozzle welding and the production mode of manual welding, which seriously restricts the development of condenser industry. On this basis, the status quo of welding at home and abroad is studied from four aspects: welding automation level, welding process of aluminum alloy products, welding equipment and gas control. It is pointed out that the research and development of condenser automatic turntable welding machine is of great practical significance to the development of condenser industry in China. Secondly, according to the specific technology of flame welding and referring to the requirements of the manufacturer, the paper puts forward the design scheme of the condenser automatic turntable welding machine. The system is divided into four parts: control unit, execution unit, regulating unit and system software. The control unit coordinates the orderly operation of each component to avoid interference with each other and ensures the welding realization; the executive unit is the executive mechanism of the system action, which includes a turntable part, a preheating part, a welding part and a cooling part. The regulating unit mainly provides combustion gas for the system, and the software design of the system includes two parts: man-machine interface and PLC software. In order to ensure the stability of gas combustion, an incremental PID control algorithm is added to the regulating unit. The controller is designed and the method of setting the controller parameters is introduced in detail. Finally, the control algorithm and system design index are verified by experiments. The experimental results show that the adjustment of gas flow is small, the adjustment is rapid and accurate, the control effect of welding flame is good, and the system indexes can meet the requirements of the design.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG409

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