發(fā)布時(shí)間：2019-01-04 18:13

【摘要】：多年來我國鋼鐵工業(yè)持續(xù)發(fā)展,生產(chǎn)技術(shù)水平也不斷提高,許多企業(yè)的鋼材質(zhì)量已經(jīng)處于世界先進(jìn)水平,而連鑄作為鋼鐵工業(yè)主要的生產(chǎn)方式,在我國鋼鐵工業(yè)已經(jīng)有超過90%占有量。結(jié)晶器是連鑄機(jī)的核心結(jié)構(gòu),結(jié)晶器的表面質(zhì)量直接影響著鑄件的成型質(zhì)量。本文以結(jié)晶器板坯為研究對象,通過結(jié)合結(jié)晶器板坯的表面加工要求,設(shè)計(jì)出一臺適用于大型結(jié)晶器板坯加工的專用機(jī)床,從而降低工人勞動強(qiáng)度,改善工人工作環(huán)境,提高工廠大尺寸結(jié)晶器板坯的表面加工效率。本文主要內(nèi)容有:首先,根據(jù)結(jié)晶器板坯的工藝要求對其進(jìn)行了工藝性分析,擬定出砂帶拋磨和拋光輪拋磨兩套工藝方案,通過比較選擇拋光輪拋磨作為結(jié)晶器板坯表面加工方案。但是由于拋光輪拋磨一般作為拋光加工的粗拋工序,其實(shí)際生產(chǎn)的可行性有待驗(yàn)證,所以通過工藝實(shí)驗(yàn)對拋光輪拋磨方案進(jìn)行了可行性驗(yàn)證,并通過分析實(shí)驗(yàn)結(jié)果得出現(xiàn)有工藝的不足,從而提出相應(yīng)的改進(jìn)性建議,為下一步的機(jī)床設(shè)計(jì)提供參考;然后,結(jié)合結(jié)晶器板坯的工藝要求確定機(jī)床總體方案。先是利用結(jié)晶器板坯的工藝性分析結(jié)果對機(jī)床的總體布局和機(jī)床的主傳動部分、進(jìn)給傳動部分進(jìn)行了確定,然后結(jié)合機(jī)床的傳動系統(tǒng)對機(jī)床的運(yùn)動參數(shù)、動力參數(shù)和尺寸參數(shù)進(jìn)行了確定,并利用實(shí)驗(yàn)結(jié)果對結(jié)晶器板坯的生產(chǎn)率進(jìn)行了估算;最后,對機(jī)床的主要結(jié)構(gòu)進(jìn)行了設(shè)計(jì)。機(jī)床的核心部件磨頭的設(shè)計(jì)主要是對傳統(tǒng)的拋光輪進(jìn)行了改進(jìn),增強(qiáng)了拋光輪對拋光膏的保持性,并結(jié)合生產(chǎn)需要設(shè)計(jì)了拋光輪快換機(jī)構(gòu),而且對清洗管和供給管進(jìn)行了布置,設(shè)計(jì)了適用于拋光輪反復(fù)清洗的升降和壓緊機(jī)構(gòu);機(jī)床的進(jìn)給機(jī)構(gòu)主要用于實(shí)現(xiàn)磨頭在結(jié)晶器板坯表面的S形加工路線和反復(fù)拋磨,所以設(shè)計(jì)了相應(yīng)回程機(jī)構(gòu);傳動機(jī)構(gòu)的設(shè)計(jì)主要完成了傳動系統(tǒng)中同步帶傳動、齒輪傳動和蝸桿傳動的設(shè)計(jì);機(jī)床床身的設(shè)計(jì)主要是先利用SolidWorks建模,然后通過WORKBENCH進(jìn)行模態(tài)分析和靜力學(xué)分析進(jìn)行結(jié)構(gòu)優(yōu)化的方式,旨在增強(qiáng)龍門架和底座結(jié)構(gòu)的抗振性和剛性。
[Abstract]:Over the years, China's iron and steel industry has continued to develop, and the level of production technology has been continuously improved. The steel quality of many enterprises is already at the advanced level in the world, and continuous casting is the main mode of production in the iron and steel industry. In our country iron and steel industry already has more than 90% possessive amount. The mold is the core structure of the continuous casting machine. The surface quality of the mold has a direct impact on the casting quality. Taking the mould slab as the research object, a special machine tool suitable for large mould slab processing is designed by combining the surface processing requirements of the mould slab, thus reducing the labor intensity of the workers and improving the working environment of the workers. Improve the surface processing efficiency of large size mould slab in factory. The main contents of this paper are as follows: firstly, according to the technological requirements of mould slab, two sets of process schemes are worked out, namely, belt polishing and polishing wheel polishing. The polishing wheel polishing is chosen as the mold surface processing scheme by comparison. But because polishing wheel grinding is generally used as the rough polishing process, the feasibility of its actual production needs to be verified, so the feasibility of polishing wheel grinding scheme is verified by the process experiment. Through the analysis of the experimental results, the shortcomings of the existing technology are obtained, and the corresponding suggestions for improvement are put forward, which provide a reference for the next step of machine design. Then, combined with the mold slab process requirements to determine the overall scheme of machine tools. First, the overall layout of the machine tool and the main drive part and the feed drive part of the machine tool are determined by using the results of the process analysis of the mould slab, and then the kinematic parameters of the machine tool are combined with the transmission system of the machine tool. The dynamic and dimension parameters are determined and the productivity of the mould slab is estimated by the experimental results. Finally, the main structure of the machine tool is designed. The design of the grinding head, the core part of the machine tool, is mainly to improve the traditional polishing wheel, to enhance the retention of the polishing paste by the polishing wheel, to design the quick change mechanism of the polishing wheel combined with the production needs, and to arrange the cleaning pipe and the supply pipe. The lifting and pressing mechanism suitable for repeated cleaning of polishing wheel is designed. The feed mechanism of the machine tool is mainly used to realize the S-shape machining route of the grinding head on the surface of the mould slab and the repeated polishing, so the corresponding backhaul mechanism is designed. The design of transmission mechanism mainly completes the design of synchronous belt transmission, gear transmission and worm drive in transmission system. The design of machine bed is mainly based on SolidWorks modeling and then structural optimization through WORKBENCH modal analysis and statics analysis in order to enhance the vibration resistance and rigidity of gantry frame and base structure.
【學(xué)位授予單位】：沈陽大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TF341.6;TG580

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