基于FMEA与FTA的某汽车装配车间装配过程质量控制方法研究

发布时间：2018-04-16 12:07

本文选题：汽车 + 失效模式与后果分析方法　；参考：《沈阳工业大学》2017年硕士论文

【摘要】：现代社会科学技术飞速发展,汽车制造工艺的复杂程度也越来越高,机械产品及零件的品种较多、结构繁复、具体装配方式类型较多,实施质量控制的点也就比较多,汽车装配过程也具有更强的复杂性、综合性和不确定性。为确保汽车的整体装配质量,对装配过程中出现过程变异的控制就变得尤为重要。在汽车装配过程中针对质量损失进行正确合理的预测和判估,并且找到质量问题产生的根本原因,对于控制装配过程中出现的变异和潜在的质量损失具有十分重要的指导意义,从而达到降低生产成本、提高整车装配质量、提升经济效益的目的。整车装配是汽车制造的重要环节之一。面临着日益激烈的汽车竞争市场,有效的整车装配质量管理方法与理论的提出就变得非常必要。本文在对故障树分析(FTA)理论与失效模式与影响分析(FMEA)理论进行深入研究的基础之上,设计了FMEA和FTA在整车装配过程中的应用以及实施步骤,形成了适用于整车装配过程的FMEA与FTA综合法,并建立了整车装配失效模式库。选取发动机漏油为实例,验证了FTA与FMEA相结合的实施效果,给出具有针对性的改善方案。通过实例证明,FMEA和FTA分析法的综合实施令汽车装配质量和整车的生产经济性都得到了显著的提高,为其他整车制造厂汽车装配质量管理方法提供了支持和借鉴。
[Abstract]:With the rapid development of science and technology in modern society, the complexity of automobile manufacturing technology is becoming more and more high, the variety of mechanical products and parts is more and more, the structure is complicated, the concrete assembly type is more and more, the point of implementing quality control is also more.Automobile assembly process also has more complexity, comprehensiveness and uncertainty.In order to ensure the whole assembly quality of the automobile, it is very important to control the process variation in the assembly process.The correct and reasonable prediction and evaluation of the quality loss in the process of automobile assembly and the finding of the root cause of the quality problem have very important guiding significance for controlling the variation and the potential quality loss in the assembly process.In order to reduce the production cost, improve the assembly quality of the whole car, enhance economic benefits.Vehicle assembly is one of the important links in automobile manufacturing.Facing the increasingly fierce market of automobile competition, it is necessary to put forward effective methods and theories of vehicle assembly quality management.Based on the deep research on the theory of fault tree analysis (FTAA) and failure mode and impact analysis (FMEA), this paper designs the application and implementation steps of FMEA and FTA in the whole vehicle assembly process.A comprehensive method of FMEA and FTA for the assembly process of the whole vehicle is formed, and the failure mode library of the assembly of the whole vehicle is established.Taking the engine oil spill as an example, the effect of combining FTA with FMEA is verified, and the corresponding improvement scheme is given.It is proved by examples that the comprehensive implementation of FMEA and FTA method can improve the assembly quality and the production economy of the whole vehicle, and provide support and reference for other automobile assembly quality management methods.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F407.471;F273.2

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