【摘要】：水電解產(chǎn)生氫氧氣相比傳統(tǒng)的燃?xì)夤に嚫踩�、環(huán)保、高效。氫氧焊接機(jī),是一種通過電解水產(chǎn)生高溫氫氧焰的新型焊接設(shè)備,其應(yīng)用領(lǐng)域非常廣泛,可以取代絕大部分需要火焰焊的場合;應(yīng)用其電解水產(chǎn)生的氫氧火焰作為焊接熱源,具有環(huán)保、成本低、熱量集中等優(yōu)點(diǎn)。氫氧微火焰自動錫焊機(jī),通過把水解氫氧焊接技術(shù)引入到自動化設(shè)備行業(yè),將大大提高氫氧焊接的適用性、普及率和自動化水平,同時(shí)也將提高火焰焊接的質(zhì)量與效率。PCB插件焊接工藝,是電子裝聯(lián)行業(yè)的一種基礎(chǔ)錫焊工藝,隨著電子產(chǎn)業(yè)的微型化、精密化發(fā)展,自動錫焊技術(shù)必將取代人工焊接,完成人工不能完成的焊接工藝。氫氧微火焰自動錫焊機(jī)在PCB插件焊接中的應(yīng)用,相比其它自動錫焊技術(shù)有生產(chǎn)柔性高、不損傷元器件等獨(dú)特的優(yōu)勢,但其工藝流程及參數(shù)確定能夠依據(jù)的理論經(jīng)驗(yàn)幾乎沒有,因此,通過試驗(yàn)的方法來進(jìn)行探索是一條困難卻有效的途徑。本文在分析PCB插件焊接工藝特點(diǎn)的基礎(chǔ)上,通過功能模塊化設(shè)計(jì)思想,設(shè)計(jì)出一種結(jié)構(gòu)簡單、操作方便、效率高的數(shù)字化氫氧微火焰自動錫焊機(jī)系統(tǒng)。此自動控制系統(tǒng)的硬件結(jié)構(gòu)主要由XYZR機(jī)械手結(jié)構(gòu)、步進(jìn)及伺服驅(qū)動器、MCU示教器、ARM+FPGA控制器、光電傳感器、磁性傳感器及絲桿、夾具末端執(zhí)行器等結(jié)構(gòu)組成,完成了對微火焰發(fā)生模塊、送絲模塊、焊接工藝模塊、焊點(diǎn)定位模塊四個(gè)功能模塊的硬件結(jié)構(gòu)設(shè)計(jì)。在硬件結(jié)構(gòu)的基礎(chǔ)上,通過對關(guān)鍵工藝流程的分析,設(shè)計(jì)出基于Keil uVision 5.15開發(fā)環(huán)境的下位機(jī)控制器軟件及基于C#語言的上位機(jī)示教器界面,經(jīng)過調(diào)試,滿足控制軟件的設(shè)計(jì)功能。最后,通過對PCB插件焊接工藝的理論研究,結(jié)合此自動控制系統(tǒng)的軟硬件結(jié)構(gòu),設(shè)計(jì)出合理的試驗(yàn)技術(shù)路線,并經(jīng)過大量試驗(yàn)與焊點(diǎn)缺陷分析,以及對關(guān)鍵參數(shù)進(jìn)行正交試驗(yàn)優(yōu)化,獲得了基本滿足技術(shù)指標(biāo)的工藝參數(shù)。本文的主要的貢獻(xiàn)是:1.研制出氫氧微火焰自動錫焊機(jī)樣機(jī),包括軟件及硬件系統(tǒng);2.基于PCB插件錫焊工藝的理論研究,通過試驗(yàn)確定了行之有效的工藝參數(shù)。
[Abstract]:Water electrolysis produces hydrogen and oxygen more safely, environmentally and efficiently than traditional gas technology. Hydrogen oxygen welding machine is a new type of welding equipment which produces high temperature hydrogen oxygen flame through electrolytic water. It can be used in a wide range of fields and can replace most of the situations where flame welding is needed. The hydrogen and oxygen flame produced by electrolytic water is used as welding heat source, which has the advantages of environmental protection, low cost and heat concentration. By introducing the hydrolysate hydrogen oxygen welding technology into the automation equipment industry, the applicability, popularity and automation level of the hydrogen oxygen welding will be greatly improved. At the same time, it will also improve the quality and efficiency of flame welding. PCB plug-in welding process is a basic tin welding process in electronic assembly industry. With the miniaturization and precision development of electronic industry, automatic tin welding technology will replace manual welding. Complete manual welding process. Compared with other automatic tin welding technology, the application of hydrogen oxygen micro-flame automatic tin welding machine in PCB plug-in welding has many unique advantages, such as high production flexibility and no damage to components, but there is almost no theoretical experience on which the process flow and parameters can be determined. Therefore, it is a difficult but effective way to explore by means of experiment. On the basis of analyzing the characteristics of welding technology of PCB plug-in, this paper designs a digital automatic tin welding system with simple structure, convenient operation and high efficiency by means of functional modularization design. The hardware structure of this automatic control system is mainly composed of XYZR manipulator structure, step and servo driver, ARM FPGA controller of MCU teacher, photoelectric sensor, magnetic sensor and wire rod, end actuator of fixture, etc. The hardware structure design of four functional modules, such as micro-flame generation module, wire feeding module, welding process module and solder joint positioning module, is completed. Based on the hardware structure and the analysis of the key technological process, the software of the lower computer controller based on Keil uVision 5.15 and the interface of the upper computer teacher based on C # language are designed and debugged. Meet the design function of control software. Finally, through the theoretical study of welding process of PCB plug-in, combining with the software and hardware structure of the automatic control system, a reasonable test technical route is designed, and a large number of tests and analysis of solder joint defects are made. The key parameters were optimized by orthogonal test, and the process parameters which basically met the technical specifications were obtained. The main contributions of this paper are as follows: 1. The prototype of hydrogen oxygen micro flame automatic tin welding machine is developed, including software and hardware system. 2. Based on the theoretical research of PCB plug-in tin welding process, the effective process parameters are determined by experiments.
【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN41

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