摘要在如今激烈的全球化竞争中，想要谋求长远的发展，立足于不败之地，必须从根本上提高产品和服务的质量。六西格玛是一种从上至下的革新方法，它是一种提高质量的方法，有助于降低成本、改进流程和提高工作质量。86567

本文首先介绍了选题的目的和意义及国内外研究综述。然后介绍六西格玛理念、主要内容和六西格玛工作的程序,之后再介绍六西格玛所用到的工具和方法。结合工作经验及学习质量管理的心得，对工作中遇到的问题使用六西格玛方法进行分析，提高了工作质量，给企业增加了效益。

本文通过实际的案例介绍了六西格玛改进方法在企业质量改进中的实际运用情况。通过质量分析和改进，使划伤、刮伤的现象明显减少，由6。43%减为0。98%；使因粗糙度引起的不良率由改善前的16。24%减为2。23%。通过降低不良率，节省了企业的生产成本。

毕业论文关键词：六西格玛；DMAIC；质量改进；质量管理

Study on the application of Six Sigma Management in enterprise quality improvement

 Abstract In today's global environment full of fierce competition, in order to pursue long-term development and also maintain an invincible position in the long run, it is necessary to be able to improve the quality of products and services fundamentally。 Six Sigma is an innovative approach to improve quality through renovating from top to bottom, which helps to reduce costs, optimize process and enhance the quality of work。 

This paper first introduces the purpose and significance of the topic, related theories and researches from home and abroad。 Then it comes to the concept, main content and procedures of Six Sigma management which leading to the Six Sigma management tools and methods。 Combined with the work experience from learning quality management, the problems encountered in work need to be analyzed through Six Sigma method, therefore help to bring benefit to company by improving quality during work。

This paper attempts to introduce the application of Six Sigma Management System in enterprise quality enhancement by the case analysis。 Through quality analysis and improvement, Henglixin Company reduced scratching and scoring ratio from 6。43% to 0。98%。Also the defection ratio caused by roughness was lowered from 16。24% to 2。23%,which saved the production cost for company。

Keywords: Six Sigma;DMAIC;Quality Improvement;Quality Management

目  录

0引言 1

1恒利信发展现状及存在问题 2

1。1 恒利信企业介绍 2

1。2 企业在质量管理方面存在的问题 2

2六西格玛基本理论 3

2。1 六西格玛的概念 3

2。2 主要内容 4

2。3 六西格玛管理工作程序 4

2。4 六西格玛管理工具和方法 5

2。5 小结 5

3 DAMIC方法在产品质量改进中的应用 5

3。1 定义阶段(D) 5

3。2 测量阶段(M) 11

3。3 分析阶段(A) 15

3。4 改进阶段(I) 17

3。5 控制阶段(C) 18

3。6 小结 19

结 论 20

致 谢