凸轮轴生产线布局仿真及优化研究

发布时间：2018-06-05 08:30

本文选题：车间布局 + 遗传算法　；参考：《北京工业大学》2011年硕士论文

【摘要】：汽车及所属零部件制造业是我国国民经济的支柱产业,凸轮轴属于汽车关键零部件,其生产线布局技术研究对国民经济具有重要意义。布局设计的好坏关系到工厂的生产效率、厂房的利用率、人力物力的合理配置等,从而很大程度影响到企业的总体效益。高效的布局方案可以降低生产成本、提高生产效率、加快对市场需求的响应。因此布局设计在现代企业受到越来越多的重视。本文就布局的设计展开研究,探讨布局算法、仿真技术的应用。本文首先对生产线平衡问题做了研究,在确定凸轮轴加工工序的基础上对生产线进行平衡设计。根据凸轮轴的目标产能和各工序加工时间确定各工序的设备数量。围绕生产线平衡的评价指标,对平衡设计的优劣予以评价。其次,对凸轮轴布局问题进行了探讨,针对如何建立布局模型进行了研究。对遗传算法重要参数染色体编码、染色体适应度计算、遗传算子设计进行了分析,在此基础上根据遗传算法设计相应的解决方案。针对单行和多行生产线的差别,在遗传算法的应用上进行了研究。通过对设备定位原则、定序算法、定序流程的研究,确定最终的布局方案。最后,根据布局方案,运用eM-plant软件,建立起凸轮轴生产线物流的仿真模型。通过仿真,得到各工位的效率柱状图,为生产线物流的改善提供依据。通过改善,与原方案进行对比,得到最优方案。
[Abstract]:Automobile and its parts manufacturing industry is the pillar industry of our national economy, camshaft belongs to the key parts of automobile, and the research of production line layout technology is of great significance to the national economy. The quality of layout design is related to the production efficiency of the factory, the utilization rate of the factory building, the reasonable allocation of manpower and material resources, and so on, which greatly affects the overall benefit of the enterprise. Efficient layout can reduce production cost, improve production efficiency and accelerate response to market demand. Therefore, layout design in modern enterprises is receiving more and more attention. This paper studies the design of layout, discusses the application of layout algorithm and simulation technology. In this paper, the balance problem of production line is studied firstly, and the balance design of production line is carried out on the basis of determining the processing procedure of camshaft. Determine the number of equipment in each process according to the target capacity and processing time of camshaft. Based on the evaluation index of production line balance, the merits and demerits of balance design are evaluated. Secondly, the problem of camshaft layout is discussed, and how to set up a layout model is studied. The important parameters of genetic algorithm, such as chromosome coding, chromosome fitness calculation and genetic operator design, are analyzed, and corresponding solutions are designed according to genetic algorithm. Aiming at the difference between single line and multi-line production line, the application of genetic algorithm is studied. Finally, the final layout scheme is determined through the research of equipment positioning principle, sequencing algorithm and sequencing process. Finally, according to the layout scheme, the simulation model of camshaft production line logistics is established by using eM-plant software. Through simulation, the efficiency histogram of each work station is obtained, which provides the basis for the improvement of production line logistics. By improving and comparing with the original scheme, the optimal scheme is obtained.
【学位授予单位】：北京工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH181

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