【摘要】：本課題對(duì)平行流冷凝器接管焊接技術(shù)進(jìn)行了研究,設(shè)計(jì)研發(fā)了一套適用于自動(dòng)化生產(chǎn)的冷凝器自動(dòng)轉(zhuǎn)臺(tái)焊接系統(tǒng)。首先,論文分析了平行流冷凝器接管焊接的難點(diǎn)以及手工焊接的生產(chǎn)方式嚴(yán)重制約著冷凝器行業(yè)的發(fā)展。在此基礎(chǔ)上,從焊接自動(dòng)化水平現(xiàn)狀、鋁合金制品環(huán)縫焊接工藝、焊接設(shè)備現(xiàn)狀以及燃?xì)饪刂蒲芯楷F(xiàn)狀四個(gè)方面研究了國(guó)內(nèi)外焊接的現(xiàn)狀,提出冷凝器自動(dòng)轉(zhuǎn)臺(tái)焊機(jī)的研發(fā)對(duì)于國(guó)內(nèi)冷凝器行業(yè)的發(fā)展具有重要的現(xiàn)實(shí)意義。其次,論文結(jié)合火焰焊接的具體工藝,參考廠家需求提出了冷凝器自動(dòng)轉(zhuǎn)臺(tái)焊機(jī)的整機(jī)設(shè)計(jì)方案,系統(tǒng)分為控制單元、執(zhí)行單元、調(diào)節(jié)單元和系統(tǒng)軟件四個(gè)部分。控制單元協(xié)調(diào)控制各個(gè)部件有序工作,避免相互干擾,確保焊接實(shí)現(xiàn);執(zhí)行單元是系統(tǒng)動(dòng)作的執(zhí)行機(jī)構(gòu),包括了轉(zhuǎn)臺(tái)部分、預(yù)熱部分、焊接部分和冷卻部分;調(diào)節(jié)單元主要為系統(tǒng)提供燃燒氣體;系統(tǒng)的軟件設(shè)計(jì)包括了人機(jī)交互界面和PLC軟件兩部分內(nèi)容。為了保證氣體燃燒的穩(wěn)定性,論文為調(diào)節(jié)單元添加了增量式PID控制算法。設(shè)計(jì)了控制器并詳細(xì)介紹了控制器參數(shù)設(shè)定的方法,通過(guò)工程整定實(shí)驗(yàn)得出具體參數(shù)值。最后,論文對(duì)控制算法和系統(tǒng)設(shè)計(jì)指標(biāo)進(jìn)行了實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)結(jié)果表明氣體流量調(diào)節(jié)時(shí)波動(dòng)小,調(diào)節(jié)迅速準(zhǔn)確,焊接火焰控制效果良好,且系統(tǒng)指標(biāo)均能夠滿(mǎn)足設(shè)計(jì)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.
【學(xué)位授予單位】：中國(guó)計(jì)量學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TG409

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