模具制造系统布局方式的仿真评价

发布时间：2018-03-09 22:26

本文选题：布局　切入点：仿真评价　出处：《广东工业大学》2012年硕士论文　论文类型：学位论文

【摘要】：模具是工业生产的基础工艺设备,被称为“工业之母”。很多工业产品零件和绝大部分橡胶、塑料制品均由模具成形。模具制造系统的生产模式为多品种、中小批量和订货式生产。伴随着我国工业化的蓬勃发展,作为其基石的模具制造业也面临着越来越多的挑战。产品结构日益复杂、需求日益多样化、订单更新日益加速,这些变化不但对复杂制造系统的计划、生产和调度提出了更高的要求,同时,也使得面对不同的产品结构时采用何种布局方式成为一个难题。为此,本文对某模具企业的设施规划现状和需求进行了调研,提出了机群式、半机群式和单元式三种具有代表性的布局方案。在此基础上,综合了传统的评价指标及当前提出的系统复杂度评价指标——熵,构建了适用于模具制造系统布局的评价指标体系。鉴于现实实验不易操作和实现,采用eM-Plant软件构建了仿真实验平台,对各方案进行了评价分析。期待给出相对较优的模具制造系统布局方案。本文主要研究内容如下：首先,模具制造系统生产模型提取。从现实模具制造系统中,提取产品结构,订单分布,工艺路线,工时分布和资源数目等数据模型；其次,构建布局模型。依据工艺路线或关键件建立机群式布局模型；按照产品结构,对设备进行单元划分,建立单元式布局模型；综合机群式和单元式布局的特点,建立半机群式布局模型；接着,建立评价指标体系。建立包含在制品数量,平均物流路径,产品生命周期,完成率,设备利用率和熵在内的综合评价指标体系；最后,运用基于eM-Plan仿真软件建立各布局方案的仿真平台,导入调研所得数据,运行仿真,统计评价体系中各指标数据。通过对比,分析各布局方案的优劣。对输出结果计算分析可知,单元式布局在熵,制品数量、物流路径和生产周期指标下具有较为明显的优势；机群式布局的设备利用率较高,但是物流路径指标下的劣势较为突出,并且较单元式有更大的管理复杂度。半机群式布局的各项指标值均介于以上两种布局之间。综合模具制造业所关注的核心问题以及评价结果,可发现半机群式布局方式更适合于模具制造业。
[Abstract]:Mould is the basic process equipment of industrial production, which is called "the mother of industry". Many parts of industrial products and most of rubber and plastic products are formed by die. Medium and small batch and order production. With the rapid development of industrialization in China, the mould manufacturing industry, which is the cornerstone of the industry, is facing more and more challenges. The product structure is becoming more and more complex, the demand is becoming more and more diverse, and the order updating is accelerating day by day. These changes not only put forward higher requirements for the planning, production and scheduling of complex manufacturing systems, but also make the layout of different product structures a difficult problem. Therefore, this paper investigates the present situation and needs of facility planning in a mould enterprise, and puts forward three representative layout schemes: cluster, semi-machine and unit. This paper synthesizes the traditional evaluation index and the current system complexity evaluation index-entropy, and constructs an evaluation index system suitable for the layout of die manufacturing system. In view of the fact that the experiment is not easy to operate and realize, The simulation experiment platform is constructed with eM-Plant software, and each scheme is evaluated and analyzed. It is expected to give a relatively better layout scheme of die manufacturing system. The main contents of this paper are as follows:. Firstly, the production model of mould manufacturing system is extracted. From the real mould manufacturing system, the data models such as product structure, order distribution, process route, man-hour distribution and resource number are extracted. Secondly, the layout model is built. According to the process route or key parts, the cluster layout model is established; according to the product structure, the equipment is divided into units, and the unit layout model is established. The semi-machine group layout model is established. Then, the evaluation index system is established, which includes the quantity of in-process products, the average logistics path, the product life cycle, the completion rate, the equipment utilization ratio and the entropy. Finally, the simulation platform of each layout scheme is established based on eM-Plan simulation software, and the data obtained from investigation are imported, and the index data in the system of running simulation and statistical evaluation are carried out. Through comparison, the advantages and disadvantages of each layout scheme are analyzed. The calculation and analysis of the output results show that the unit layout has obvious advantages under the indexes of entropy, product quantity, logistics path and production cycle, and the equipment utilization ratio of cluster layout is higher, But the disadvantages under the logistics path index are more prominent. The index values of semi-machine cluster layout are between the above two types of layout. It can be found that the semi-machine group layout is more suitable for mould manufacturing.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH181;TG76

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