本文選題：堆焊成型　切入點(diǎn)：鋪粉機(jī)構(gòu)　出處：《新疆大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：快速成型(Rapid Prototyping,RP)技術(shù)是加工制造領(lǐng)域的一項(xiàng)重大研究成果,同時(shí)金屬快速成型技術(shù)也是快速成型技術(shù)與研究的熱點(diǎn)。采用電弧作為熱源的三維堆焊技術(shù)其成型零件的致密度高,力學(xué)性能良好,同時(shí)結(jié)合成熟的焊接工藝能夠在降低設(shè)備成本的情況下還能保證成型質(zhì)量,因此具有很好的發(fā)展前景。本文在原有的設(shè)備基礎(chǔ)上進(jìn)行了開發(fā),設(shè)計(jì)了一種堆焊成型機(jī),加入了鋪粉功能,還完成了對(duì)該堆焊成型設(shè)備的機(jī)械系統(tǒng)、控制系統(tǒng)硬件設(shè)計(jì)與搭建以及配套軟件的開發(fā),并在設(shè)備上進(jìn)行了堆焊試驗(yàn)。本文提供了一種基于金屬粉末支撐的堆焊成型金屬零件的方法,其基礎(chǔ)原理是焊接成型技術(shù)與快速成型技術(shù)的結(jié)合。主要的方法是利用焊絲作為成型材料,采用金屬粉末作為支撐材料,金屬粉末對(duì)懸臂結(jié)構(gòu)的零件起到了支撐作用,能夠?qū)崿F(xiàn)金屬零件的堆焊快速成型。自行研制的堆焊成型機(jī)的機(jī)械結(jié)構(gòu)主要包括:三維運(yùn)動(dòng)機(jī)構(gòu),以及新添加的鋪粉模塊、送粉模塊和粉末回收模塊。對(duì)主要模塊進(jìn)行了設(shè)計(jì)與搭建,并介紹了各個(gè)模塊的工作原理,同時(shí)對(duì)關(guān)鍵零部件進(jìn)行了有限元分析。設(shè)備控制系統(tǒng)采用了數(shù)控系統(tǒng)常用的“工控機(jī)+運(yùn)動(dòng)控制器”的方案,采用模塊化設(shè)計(jì)的方法縮短了開發(fā)周期,控制系統(tǒng)的性能穩(wěn)定可靠。完成了堆焊控制系統(tǒng)的測試軟件的設(shè)計(jì),本設(shè)備的配套控制軟件使用Delphi進(jìn)行開發(fā),軟件系統(tǒng)包含了點(diǎn)位控制模塊、狀態(tài)檢測模塊和波形顯示模塊這三個(gè)主要功能模塊,軟件性能可靠,結(jié)構(gòu)完善。在完成了設(shè)備的機(jī)械系統(tǒng)、控制系統(tǒng)以及軟件系統(tǒng)的設(shè)計(jì)與搭建后,進(jìn)行了系統(tǒng)調(diào)試,調(diào)試效果良好。通過試驗(yàn)確定了刮板的平動(dòng)速度和送粉棍的轉(zhuǎn)速。設(shè)計(jì)了單道多層試驗(yàn)和多道單層成型試驗(yàn),對(duì)試驗(yàn)現(xiàn)象和結(jié)果進(jìn)行了分析。最后進(jìn)行了懸臂結(jié)構(gòu)零件的成型試驗(yàn),驗(yàn)證了堆焊設(shè)備的可行性。
[Abstract]:Rapid Prototyping (RPP) technology is an important research achievement in the field of processing and manufacturing, and metal rapid prototyping technology is also a hot spot in rapid prototyping technology. The mechanical property is good, at the same time the mature welding process can guarantee the forming quality while reducing the equipment cost, so it has a very good development prospect. This paper has carried on the development on the basis of the original equipment, A surfacing molding machine is designed, and the powder laying function is added. The mechanical system of the surfacing forming equipment, the hardware design and construction of the control system and the development of the supporting software are also completed. A method of forming metal parts based on metal powder support is provided in this paper. The basic principle is the combination of welding forming technology and rapid prototyping technology. The main method is to use welding wire as molding material and metal powder as supporting material. Metal powder plays a supporting role in cantilever structure parts. The mechanical structure of the self-developed surfacing molding machine mainly includes three dimensional motion mechanism and the newly added powder laying module. The main modules are designed and built, and the working principle of each module is introduced. At the same time, the finite element analysis of the key parts is carried out. The equipment control system adopts the scheme of "industrial control computer motion controller", which is commonly used in numerical control system, and shortens the development period by adopting the method of modular design. The performance of the control system is stable and reliable. The test software of the surfacing welding control system is designed. The supporting control software of this equipment is developed with Delphi, and the software system includes the point position control module. The three main function modules of state detection module and waveform display module have reliable performance and perfect structure. After completing the design and construction of the mechanical system, control system and software system of the equipment, the system is debugged. The debugging effect is good. The speed of moving of scraper and the speed of powder feeding rod are determined by experiment. Single pass multi-layer test and multi-channel monolayer molding test are designed. Finally, the forming test of cantilever structure parts is carried out, and the feasibility of surfacing equipment is verified.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG439.2

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