航空紧固件企业机加车间建模仿真与优化研究

发布时间：2018-05-21 06:25

本文选题：建模仿真研究 + 二级缓冲区　；参考：《重庆大学》2014年硕士论文

【摘要】：伴随着中国航空事业的快速发展，航空紧固件企业迎来了新的发展机遇，但是市场环境的变化，让生产方式出现了新的特征：面向订单、多品种、中小批量、高质量、交货期短以及低成本等，这又给航空紧固件企业提出了新的挑战。如何快速研发和生产出市场所需的紧固件产品，，是航空紧固件企业亟待解决的问题。航空紧固件企业需要对其原有的生产系统进行重新审视，并做出适当调整，使其与市场需求相匹配。作为航空紧固件企业的核心车间，机加车间对企业的产出和产品生产周期有直接的影响。由于机加车间设备种类众多，并且每种设备数量也很多，因此功能布局是航空紧固件企业机加车间最常用的布局形式，这种布局形式虽然具有很强的产品适应性，但是这种布局形式让车间的管理变得复杂，容易出现产品生产周期长、生产不均衡、设备利用率低下等问题。由于功能布局生产车间固有的复杂性，很难用数学解析方法将其所有特征建模并进行分析研究，而计算机仿真技术为解决这类复杂系统问题提供了便利。本文在对航空紧固件企业机加车间特征进行深入研究的基础上，提出了航空紧固件企业机加车间仿真建模方法，该建模方法包括四个方面：①基于二级缓冲区和推、拉传送机制的加工单元的实现；②基于设备前后路径开闭的批次管理；③不同产品间设备转换调试的实现；④调度网络的实现以及产品工艺序列表和产品基础信息表的建立。用该方法在Simio仿真软件中完成了A公司机加车间仿真模型的建立。该建模方法不仅适用于航空紧固件企业机加车间的仿真，还适用于其他功能布局生产系统的建模仿真，对生产系统建模仿真研究有一定的理论价值和实用价值。本文还提出了航空紧固件企业机加车间基于仿真的优化方法，根据仿真结果对A公司机加车间进行了优化研究，将A公司机加车间功能布局转换为柔性单元和功能布局相结合的方式，并用仿真对优化方案进行了分析，确定了优化后机加车间的最佳流转批量。优化前后机加车间仿真结果对比分析表明航空紧固件企业机加车间选择柔性单元布局是可取的。
[Abstract]:With the rapid development of China's aviation industry, aviation fastener enterprises welcome new development opportunities, but the market environment changes, so that new characteristics of production: order oriented, multi-species, medium and small batch, high quality, Short delivery time and low cost, which brings new challenges to aviation fastener enterprises. How to develop and produce fastener products quickly is an urgent problem for aviation fastener enterprises. Aviation fastener enterprises need to re-examine their original production systems and make appropriate adjustments to match the market demand. As the core workshop of the aviation fastener enterprise, the machine processing workshop has direct influence on the output and production cycle of the enterprise. Because there are many kinds of equipments in the machine shop, and the quantity of each kind of equipment is also many, the functional layout is the most commonly used layout form in the aircraft fastener workshop of the aviation fastener enterprise, although this layout form has the strong product adaptability, However, this kind of layout makes the management of workshop become complicated, and the production cycle is long, the production is unbalanced, the equipment utilization ratio is low and so on. Due to the inherent complexity of the functional layout workshop, it is difficult to model and analyze all of its features by mathematical analytical method, and computer simulation technology provides convenience for solving such complex system problems. In this paper, based on the in-depth study of the characteristics of aircraft processing workshop in aviation fastener enterprises, a simulation modeling method of aircraft processing shop for aviation fastener enterprises is proposed. The modeling method includes four aspects: 1, based on two-stage buffer and push. The realization of Machining Unit of pull transfer Mechanism 2 based on the batch management of equipment before and after route opening and closing, the realization of equipment conversion and debugging among different products, the realization of scheduling network and the establishment of product process sequence list and product basic information table. Using this method, the simulation model of A driver plus workshop is established in Simio simulation software. This modeling method is not only applicable to the simulation of aviation fastener enterprise machine shop, but also applicable to the modeling and simulation of other functional layout production systems. It has certain theoretical and practical value for the modeling and simulation research of production system. This paper also puts forward an optimization method based on simulation in the aircraft adding workshop of aviation fastener enterprise. According to the simulation results, the optimization of A driver plus workshop is studied. The function layout of A driver plus workshop is transformed into a combination of flexible unit and function layout, and the optimization scheme is analyzed by simulation, and the optimal flow batch of the machine adding workshop after optimization is determined. The comparison and analysis of the simulation results before and after optimization show that it is advisable to select flexible cell layout in the aircraft loading workshop of aviation fastener enterprises.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F426.5

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