【摘要】：隨著經(jīng)濟(jì)的快速發(fā)展，顧客的需求日趨多樣化，我國農(nóng)業(yè)機(jī)械制造企業(yè)在激烈的競爭中面臨眾多挑戰(zhàn)，迫使企業(yè)由傳統(tǒng)的生產(chǎn)方式向準(zhǔn)時制的精益生產(chǎn)方式轉(zhuǎn)變。然而裝配線平衡技術(shù)尚沒有深入到精益生產(chǎn)管理中去，由裝配線不平衡引起的生產(chǎn)效率低下、浪費(fèi)現(xiàn)象十分嚴(yán)重。在精益生產(chǎn)思想的指導(dǎo)下如何不斷地優(yōu)化裝配線，消除裝配線中瓶頸、阻滯、不均等浪費(fèi)現(xiàn)象，使其達(dá)到最佳平衡，是本文研究的重點(diǎn)。 本文對精益生產(chǎn)、裝配線平衡的相關(guān)理論、方法以及國內(nèi)外研究現(xiàn)狀進(jìn)行了分析和總結(jié)，并深入研究了精益生產(chǎn)下的裝配線平衡。以五征集團(tuán)農(nóng)用車駕駛室裝配線17工位為研究對象，針對目前存在著產(chǎn)量不能滿足市場需求的現(xiàn)實(shí)問題，運(yùn)用精益生產(chǎn)的IE手法對裝配線進(jìn)行分析改善。首先對現(xiàn)狀進(jìn)行了詳細(xì)的調(diào)查研究，做出裝配工藝流程圖；運(yùn)用秒表測時法測定各工位作業(yè)時間，找出“瓶頸”工位并制定改善方案。其次對總裝車間實(shí)施6S管理，改善作業(yè)環(huán)境，消除裝配線外浪費(fèi)。最后重點(diǎn)對“瓶頸”工位進(jìn)行流程流程分析、雙手作業(yè)分析及動作因素分析，用MOD法制定標(biāo)準(zhǔn)作業(yè)時間。運(yùn)用精益改善方法對裝配線進(jìn)行局部改善，取得了一定的效果，裝配線平衡率有所提高。 提出該裝配線為第一類平衡問題，傳統(tǒng)IE方法不能進(jìn)一步優(yōu)化改善的情況下，運(yùn)用數(shù)學(xué)模型方法建立了駕駛室裝配線第一類平衡問題的0-1規(guī)劃模型，并進(jìn)行編程求解，，從整體上進(jìn)行優(yōu)化。Lingo軟件求解優(yōu)化后各工位節(jié)拍趨于均衡，裝配線平衡率顯著提高。 本文通過運(yùn)用精益改善與線性規(guī)劃相結(jié)合的方法，以五征集團(tuán)農(nóng)用車駕駛室裝配線為案例進(jìn)行改善研究，提高了生產(chǎn)效率、平衡率，取得了顯著的效果，同時對其它農(nóng)業(yè)機(jī)械制造企業(yè)提供了一定的參考價值。
[Abstract]:With the rapid development of economy and the diversification of customers' demands, Chinese agricultural machinery manufacturing enterprises face many challenges in the fierce competition, forcing enterprises to change from the traditional mode of production to the just-in-time lean mode of production. However, the balance technology of assembly line has not gone deep into lean production management, the production efficiency caused by the imbalance of assembly line is low, and the waste phenomenon is very serious. Under the guidance of lean production thought, how to continuously optimize assembly line, eliminate bottleneck, block and unequal waste phenomenon in assembly line, and make it reach the best balance is the focus of this paper. In this paper, the related theories, methods and research status of lean production and assembly line balance are analyzed and summarized, and the assembly line balance under lean production is deeply studied. Taking the 17 station of Wuzheng Group's agricultural vehicle cab assembly line as the research object, aiming at the realistic problem that the output can't meet the market demand at present, the IE technique of lean production is used to analyze and improve the assembly line. First, the present situation is investigated in detail, the assembly process flow chart is made, the working time of each station is measured by the time meter method, the "bottleneck" station is found out and the improvement scheme is worked out. Secondly, implement 6S management to the assembly workshop, improve the working environment and eliminate the waste outside the assembly line. Finally, the process analysis, two-hand operation analysis and action factor analysis of "bottleneck" station are emphasized. The MOD method is used to establish the standard operation time. The local improvement of assembly line is carried out by using lean improvement method, and the balance rate of assembly line is improved to a certain extent. It is proposed that the assembly line is the first kind of equilibrium problem, and that the traditional IE method can not be further optimized. Using the mathematical model method, the 0 / 1 programming model of the first kind of balance problem for cab assembly line is established and solved by programming. After solving the optimization with Lingo software, the beat of every station tends to be balanced, and the balance rate of assembly line is improved significantly. By using the method of combination of lean improvement and linear programming, this paper studies the improvement of Wuzheng Group's agricultural vehicle cab assembly line, improves the production efficiency and balance rate, and obtains remarkable effect. At the same time, it provides certain reference value to other agricultural machinery manufacturing enterprises.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：F426.4;F273

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