两级串行生产线仿真建模与分析
发布时间：2018-07-20 09:47
【摘要】：生产线具有连贯性好、生产效率高等特点,吸引了越来越多制造企业的关注,在实际生产中具有广泛应用。缓冲区大小、质量检测策略、设备性能劣化等很多因素都会影响生产线的性能,本文依托“高档数控机床与基础制造装备”国家科技重大专项课题“轿车变速箱齿轮加工自动生产线”,以具有质量检测信息反馈的两级串行生产线为研究对象,采用仿真实验方法,对生产线性能进行分析研究,为改善和优化齿轮生产线的设计提供实验和理论依据。首先,建立两级串行生产线质量检测信息反馈模型,分析生产线中加工系统劣化过程,采用马尔可夫随机过程理论对加工系统劣化过程进行建模。分析生产线加工过程质量失效类型,研究加工系统状态与质量失效之间的对应关系,采用质量检测数据拟合方法,对工件质量失效特性进行研究。其次,使用SimTalk语言编写实验控制程序对机床、检测站、机床维护策略等进行控制,确定生产线性能分析评价指标,分析加工时间的变动性,基于eM-Plant软件平台建立两级串行生产线仿真分析模型,设计仿真实验方案。然后,根据实验方案开展仿真实验,分析加工时间变化、缓冲区容量变化以及系统加工性能劣化对两级串行生产线性能的影响,在不同配置生产线中进行对比分析,讨论各种变化因素与生产线性能之间的联系。最后,结合两级串行齿轮自动加工生产线,研究各种改进方法对其性能的影响及其有效性。
[Abstract]:Because of its good consistency and high production efficiency, the production line has attracted more and more attention from manufacturing enterprises and has been widely used in practical production. Many factors, such as buffer size, quality detection strategy, equipment performance deterioration and so on, will affect the performance of the production line. This paper relies on "High-grade NC machine tools and basic manufacturing equipment", a national science and technology major project, "automatic production line for car gearbox gear processing", and takes the two-level serial production line with quality inspection information feedback as the research object. By using the method of simulation experiment, the performance of the production line is analyzed and studied, which provides the experimental and theoretical basis for improving and optimizing the design of the gear production line. Firstly, the information feedback model of two-stage serial production line quality detection is established, and the deterioration process of machining system in production line is analyzed. Markov stochastic process theory is used to model the deterioration process of machining system. The quality failure type of production line is analyzed and the corresponding relationship between machining system state and quality failure is studied. The quality failure characteristics of workpiece are studied by using the fitting method of quality test data. Secondly, we use SimTalk language to compile the experimental control program to control the machine tool, the test station, the machine tool maintenance strategy and so on, to determine the production line performance analysis evaluation index, to analyze the processing time variability, Based on eM-Plant software platform, the simulation analysis model of two-stage serial production line is established, and the simulation experiment scheme is designed. Then, according to the experimental scheme, the simulation experiment is carried out to analyze the effects of the change of processing time, the change of buffer capacity and the deterioration of system processing performance on the performance of two-stage serial production line. The relationship between various factors and the performance of the production line is discussed. Finally, combined with the two-stage serial gear automatic processing line, the effects of various improvement methods on its performance and its effectiveness are studied.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH186
[Abstract]:Because of its good consistency and high production efficiency, the production line has attracted more and more attention from manufacturing enterprises and has been widely used in practical production. Many factors, such as buffer size, quality detection strategy, equipment performance deterioration and so on, will affect the performance of the production line. This paper relies on "High-grade NC machine tools and basic manufacturing equipment", a national science and technology major project, "automatic production line for car gearbox gear processing", and takes the two-level serial production line with quality inspection information feedback as the research object. By using the method of simulation experiment, the performance of the production line is analyzed and studied, which provides the experimental and theoretical basis for improving and optimizing the design of the gear production line. Firstly, the information feedback model of two-stage serial production line quality detection is established, and the deterioration process of machining system in production line is analyzed. Markov stochastic process theory is used to model the deterioration process of machining system. The quality failure type of production line is analyzed and the corresponding relationship between machining system state and quality failure is studied. The quality failure characteristics of workpiece are studied by using the fitting method of quality test data. Secondly, we use SimTalk language to compile the experimental control program to control the machine tool, the test station, the machine tool maintenance strategy and so on, to determine the production line performance analysis evaluation index, to analyze the processing time variability, Based on eM-Plant software platform, the simulation analysis model of two-stage serial production line is established, and the simulation experiment scheme is designed. Then, according to the experimental scheme, the simulation experiment is carried out to analyze the effects of the change of processing time, the change of buffer capacity and the deterioration of system processing performance on the performance of two-stage serial production line. The relationship between various factors and the performance of the production line is discussed. Finally, combined with the two-stage serial gear automatic processing line, the effects of various improvement methods on its performance and its effectiveness are studied.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH186
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