基于实验设计方法在改进D公司产品质量中的研究

发布时间：2018-05-12 22:38

本文选题：实验设计 + 质量改善　；参考：《山东大学》2017年硕士论文

【摘要】：信息化和网络时代的到来,使得客户对产品质量的满意逐渐成为企业在日益激烈的竞争中获得优势的最根本的最核心的保障,只有企业持续满足客户的质量需求才能真正赢得源源不断的客户。持续改善产品质量赢得客户是伴随着质量管理理论不断发展而获得的共识,实验设计方法是一种在最短的时间和最小的成本下找到企业关键的真正核心的质量问题根源并且快速对其进行改善的质量工具,掌握这种质量改善的方法对于所有企业来说都是非常重要的。本文研究的主要内容是首先通过对所研究的企业的内部关键质量指标和各个工序过程能力以及企业的外部关键质量指标进行分析,确定了关键质量问题是外部顾客投诉,将其作为质量改善的目标;然后通过相关性分析将外部质量指标与企业日常监控的内部质量指标进行关联,将不容易直接监控的外部质量指标转化为易于监控的内部质量指标作为实验设计的响应变量。接着通过头脑风暴法、鱼骨图法等方法进行关键要素的分析,运用失效模式和影响分析对关键的要素进行筛选,选择合适的因子和水平进行部分析因的实验设计方案;然后实施实验设计方案,分析试验结果,拟合并且优化响应变量与所选因子的数学模型,得出初步的结论。最后根据本次实验设计结果的分析确定下一次实验设计需要避免的问题和重点的研究方向,从而为进一步改善产品质量提供基础的研究数据和分析方法。本文的研究创新和理论现实意义体现在下面几个方面。本文的研究是D公司在改善质量中首次引入的实验设计的分析方法。通过本文的研究,在D公司内首次将实验设计方法和六西格玛质量分析软件--Minitab分析软件运用于实际生产过程中的产品质量改善,虽然没有能在有限的实验次数内找全所有的显著因子和找到最佳参数,但是通过本次实验设计发现了其中存在的一些的问题点和找到了优化设计的思路,并且获得了非常多的有参考意义的数据,指明了下一步的实验设计优化的方向,打下了 D公司在后续的实验设计方案打下了坚实的基础。此外,非常关键的是通过这次的研究和六西格玛质量分析软件--Minitab软件的推广使用使得实验设计的思想和方法在D公司内得到了普及并且获得了广泛的认可,迈出了在D公司所属R集团范围内推广普及实验设计方法非常关键的一步。并且随着学习的积累和经验的增加,使用实验设计方法改善D公司产品外部质量指标达到管理层期望的目标一定能获得成功。此外,本文中使用FMEA在众多的关键因子中筛选部分的因子作为优先部分析因设计的方法,也为广大质量工作者在实验设计运用中提供新的思路。
[Abstract]:With the advent of information technology and network era, customer satisfaction with product quality has gradually become the most fundamental and core guarantee for enterprises to gain advantages in the increasingly fierce competition. Only if the enterprise continues to meet the quality needs of customers can it really win a continuous stream of customers. Continuous improvement of product quality to win customers is with the continuous development of quality management theory and the consensus, Experimental design method is a quality tool to find the root of the key core quality problem in the shortest time and minimum cost and to improve it quickly. It is very important for all enterprises to master this method of quality improvement. The main content of this paper is to analyze the internal key quality index, the process capability of each process and the external key quality index of the enterprise, and determine that the key quality problem is an external customer complaint. It is regarded as the goal of quality improvement, and then the external quality index is associated with the internal quality index of daily monitoring through the correlation analysis. The external quality index which is not easy to monitor directly is transformed into the internal quality index which is easy to monitor as the response variable of the experiment design. Then the key elements are analyzed by brainstorming method and fish bone map method. The key elements are screened by failure mode and influence analysis, and the appropriate factors and levels are selected to carry out the experimental design scheme of partial factor analysis. Then the experimental design scheme is implemented, the experimental results are analyzed, the mathematical models of response variables and selected factors are fitted and optimized, and a preliminary conclusion is drawn. Finally, according to the analysis of the results of this experiment, the problems and the research direction of the next experiment design should be avoided, so as to provide the basic research data and analysis methods for further improving the product quality. The research innovation and theoretical and practical significance of this paper are reflected in the following aspects. The research in this paper is an analytical method of experimental design introduced by D Company in improving quality for the first time. Through the research of this paper, the experimental design method and six Sigma quality analysis software-Minitab analysis software are first used in D Company to improve the product quality in the actual production process. Although not able to find all the significant factors and find the best parameters in the limited number of experiments, but through this experimental design found some of the problems and found the idea of optimal design. And obtained a lot of reference data, pointed out the next step of the direction of experimental design optimization, laid a solid foundation for D company in the subsequent experimental design. In addition, it is crucial that through this study and the promotion and use of the six Sigma quality analysis software Minitab, the ideas and methods of experimental design have gained popularity and wide acceptance within company D. This is a crucial step in popularizing popular experimental design methods within the R Group of D Company. And with the accumulation of learning and the increase of experience, using the experimental design method to improve the external quality of company D products to achieve the goal expected by the management will be successful. In addition, in this paper, FMEA is used to select the factors from many key factors as the priority part of the method of factor analysis, which also provides a new way for the quality workers in the application of experimental design.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F426.7;F273.2

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