發(fā)布時(shí)間：2018-06-11 23:45

  本文選題：混合裝配線 + 平衡設(shè)計(jì)��； 參考：《大連理工大學(xué)》2013年碩士論文

【摘要】：混合裝配線的運(yùn)用能夠?qū)崿F(xiàn)多品種共線生產(chǎn),能夠避免企業(yè)重復(fù)投資�；旌涎b配線平衡與產(chǎn)品排序是裝配線設(shè)計(jì)與管理中的重要問題,同時(shí)也是企業(yè)資源優(yōu)化配置的一種有效方法。本文以某冷凍機(jī)廠壓縮機(jī)裝配制造為背景,研究混合裝配線工作站平衡和產(chǎn)品排序問題。 首先,針對企業(yè)裝配現(xiàn)狀,分析了現(xiàn)行裝配方式產(chǎn)能不足的原因,提出了運(yùn)用裝配線進(jìn)行生產(chǎn)的必要性。根據(jù)產(chǎn)品的裝配工藝過程對三種壓縮機(jī)進(jìn)行了工藝相似性分析,為三種產(chǎn)品混線裝配的可能性提供了保證。針對裝配過程工時(shí)信息不能反映裝配實(shí)際情況這一問題,運(yùn)用抽樣法和X-σ控制圖為各裝配工序重新制定了標(biāo)準(zhǔn)工時(shí),為裝配線平衡和產(chǎn)品排序研究提供了基礎(chǔ)數(shù)據(jù)。 然后,針對壓縮機(jī)混合裝配線平衡問題,通過將各個(gè)產(chǎn)品的工時(shí)信息按照相應(yīng)產(chǎn)品投產(chǎn)數(shù)量轉(zhuǎn)化為混合工序平均工時(shí)的方法,將混合型裝配線平衡問題轉(zhuǎn)化為單一型平衡問題。根據(jù)壓縮機(jī)產(chǎn)能要求為混合裝配線選擇合適的節(jié)拍。完成了混合型平衡問題數(shù)學(xué)模型的建立,該模型中選取平滑指數(shù)為優(yōu)化目標(biāo)。 第三,運(yùn)用分支定界方法求解模型,得到一種可行方案；然后用LINGO進(jìn)行求解,得到混合裝配線的最優(yōu)方案。在最優(yōu)方案中裝配線需要9個(gè)工作站,滿足裝配車間人力約束；產(chǎn)能為840臺/月,產(chǎn)能提升31.25%,滿足了裝配線設(shè)計(jì)要求；平衡率為86.5%,平滑指數(shù)SI為1.6,說明裝配線各工作站間已達(dá)到良好的平衡效果。 最后,針對混合裝配線上3種產(chǎn)品投放順序問題,建立了以最短化生產(chǎn)周期為目標(biāo)函數(shù)的數(shù)學(xué)模型。運(yùn)用LINGO求解整數(shù)規(guī)劃并與傳統(tǒng)的倒數(shù)法排序結(jié)果對比,選取生產(chǎn)周期短的排序方案。在最優(yōu)排序下,完成一個(gè)循環(huán)的時(shí)間是161.25min。計(jì)算了在最優(yōu)排序下一個(gè)循環(huán)內(nèi)各個(gè)工作站實(shí)際負(fù)荷情況。
[Abstract]:The application of hybrid assembly line can realize multi-variety collinear production and avoid repeated investment. Hybrid assembly line balance and product sequencing is an important problem in assembly line design and management, and it is also an effective method to optimize the allocation of enterprise resources. Based on the compressor assembly and manufacturing in a freezer factory, this paper studies the balance of the workstation and the sequencing of the products in the hybrid assembly line. Firstly, in view of the present situation of the assembly of the enterprise, the reasons for the insufficient production capacity of the current assembly mode are analyzed. The necessity of using assembly line for production is put forward. The process similarity analysis of the three compressors is carried out according to the assembly process of the products, which provides a guarantee for the possibility of the assembly of the three kinds of products. In order to solve the problem that the man-hour information of assembly process can not reflect the actual situation of assembly, the standard man-hour is reformulated by using sampling method and X- 蟽 control chart, which provides the basic data for the research of assembly line balance and product sequencing. In order to solve the problem of compressor hybrid assembly line balance, the mixed assembly line balance problem is transformed into a single type equilibrium problem by transforming the man-hour information of each product into the average man-hour of the mixing process according to the corresponding product number of production. Select the right beat for the hybrid assembly line according to the compressor capacity requirements. The mathematical model of mixed equilibrium problem is established, in which smoothing index is chosen as the optimization objective. Thirdly, a feasible scheme is obtained by using branching and bounded method, and then lingo is used to solve the problem. The optimal scheme of hybrid assembly line is obtained. In the optimal scheme, 9 workstations are needed for assembly line to meet the human constraints of assembly workshop, the capacity is 840 units per month, and the production capacity is increased 31.255.The assembly line design requirements are satisfied. The balance rate is 86.5 and the smoothing index SI is 1.6, which indicates that the balance effect has been achieved among the workstations on the assembly line. Finally, a mathematical model with the shortest production cycle as the objective function is established to solve the problem of the order of three products on the mixed assembly line. In this paper, we use lingo to solve integer programming and compare it with the result of traditional reciprocal method, and select the sort scheme with short production cycle. In the optimal order, the time to complete a loop is 161.25 mins. The actual load of each workstation in the next cycle is calculated.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH186

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本文編號：2007208