YSM公司基于六西格玛的发电机和齿轮箱调整对齐的质量改进研究
发布时间：2019-03-31 00:41
【摘要】：2011年6月，为了增强在风电市场中的竞争力，YSM公司引进一场称为“必赢”战役。全球机舱工厂参与的大项目有两个：精益生产和六西格玛。质量关键点中的改善发电机和齿轮箱对齐调整的质量水平被提为六西格玛项目。目前，YSM公司的发电机和齿轮箱调整对齐的质量水平为二西格玛左右，调整时间长，且调整结果不稳定。客户对YSM公司的这一项质量指标的满意度不高，甚至有时需要YSM公司派出维护人员，在客户风场中的几十米高空上的风机上去返工。 为了增强顾客满意度，，响应总部的号召，减少不良成本,YSM公司决定决定采用六西格玛的方法，研究发电机和齿轮箱调整对齐的质量改进。 YSM公司按六西格玛已经成形的DMAIC模式进行分析、论证、研究这一课题。首先，界定研究的范围，识别同课题相关的关键过程；然后，明确并量化关键过程的输出，制定改进目标；接着，使用鱼骨图等，推测影响过程失效的因素，再基于过程流程图，对过程进行分析，利用过程潜在失效模式和后果分析工具筛选出影响过程输出的主要因素；紧接着，消除或减少这些假设的主要因素的影响，运行过程并验证假设；最后，如果改进方法有效，对改善的过程流程进行文件化，编写控制计划，并对过程进行统计控制，以保持改进的成果。在研究这一课题的过程中，我们使用了大量的工具、图形和图表，如流程图，鱼骨图，因果矩阵，过程潜在失效模式和后果分析，Minitab软件等。 YSM公司通过六西格玛方法，最终找到了提高发电机和齿轮箱调整对齐质量水平的方法，能够将这一过程的质量水平由原来的二西格玛提高到六西格玛，且缩短了调整时间。如果按此优化的流程操作的话，将大大降低生产成本和质量成本，并提高工作效率。在研究和实践的过程中，我们逐渐掌握了六西格玛的DMAIC方法，熟悉了测量系统分析，控制图，过程失效模式及后果分析，Minitab软件等工具，并在项目的团队活动中增强了团队的协作能力。
[Abstract]:In June 2011, to enhance its competitiveness in the wind power market, YSM introduced a campaign called "win-win". There are two major projects involved in global cabin plants: lean production and six Sigma. Quality key improvements in the alignment of generators and gearboxes were raised to the six Sigma project. At present, the quality level of YSM's generator and gearbox alignment is about two Sigma, the adjustment time is long, and the adjustment result is unstable. Customer satisfaction with this quality indicator from YSM is not high and sometimes requires YSM to send maintenance personnel to rework fans at dozens of meters in the customer's wind field. In order to increase customer satisfaction and respond to the headquarters call to reduce bad costs, YSM decided to use the six Sigma approach to study quality improvements in the alignment of generators and gearboxes. YSM company carries on the analysis, the demonstration according to the six Sigma already formed the DMAIC pattern, studies this subject. Firstly, the scope of the research is defined, and the key processes related to the subject are identified. Then, the output of the key process is defined and quantified, and the improvement objectives are formulated. Then, the fish bone diagram is used to infer the factors that affect the process failure, and then based on the process flow chart, the process is analyzed, and the main factors affecting the process output are selected by using the process potential failure mode and the consequence analysis tool. Then, eliminate or reduce the influence of the main factors of these assumptions, run the process and verify the assumptions; Finally, if the improved method is effective, the improved process flow is documented, the control plan is written, and the statistical control of the process is carried out in order to maintain the improved results. In the process of studying this subject, we use a large number of tools, graphs and diagrams, such as flowchart, fish bone diagram, cause and effect matrix, process potential failure mode and consequence analysis, Minitab software, and so on. Through the six Sigma method, YSM has finally found a way to improve the alignment quality level of generators and gearboxes, which can raise the quality level of this process from two Sigma to six Sigma and shorten the adjustment time. If you follow this optimized process, you will greatly reduce production costs and quality costs, and improve productivity. In the process of research and practice, we have gradually mastered the six Sigma DMAIC method, familiar with the measurement system analysis, control charts, process failure modes and consequences analysis, Minitab software, and other tools. And in the project's team activities to enhance the team's ability to collaborate.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：F273.2;F426.4
本文编号：2450664
[Abstract]:In June 2011, to enhance its competitiveness in the wind power market, YSM introduced a campaign called "win-win". There are two major projects involved in global cabin plants: lean production and six Sigma. Quality key improvements in the alignment of generators and gearboxes were raised to the six Sigma project. At present, the quality level of YSM's generator and gearbox alignment is about two Sigma, the adjustment time is long, and the adjustment result is unstable. Customer satisfaction with this quality indicator from YSM is not high and sometimes requires YSM to send maintenance personnel to rework fans at dozens of meters in the customer's wind field. In order to increase customer satisfaction and respond to the headquarters call to reduce bad costs, YSM decided to use the six Sigma approach to study quality improvements in the alignment of generators and gearboxes. YSM company carries on the analysis, the demonstration according to the six Sigma already formed the DMAIC pattern, studies this subject. Firstly, the scope of the research is defined, and the key processes related to the subject are identified. Then, the output of the key process is defined and quantified, and the improvement objectives are formulated. Then, the fish bone diagram is used to infer the factors that affect the process failure, and then based on the process flow chart, the process is analyzed, and the main factors affecting the process output are selected by using the process potential failure mode and the consequence analysis tool. Then, eliminate or reduce the influence of the main factors of these assumptions, run the process and verify the assumptions; Finally, if the improved method is effective, the improved process flow is documented, the control plan is written, and the statistical control of the process is carried out in order to maintain the improved results. In the process of studying this subject, we use a large number of tools, graphs and diagrams, such as flowchart, fish bone diagram, cause and effect matrix, process potential failure mode and consequence analysis, Minitab software, and so on. Through the six Sigma method, YSM has finally found a way to improve the alignment quality level of generators and gearboxes, which can raise the quality level of this process from two Sigma to six Sigma and shorten the adjustment time. If you follow this optimized process, you will greatly reduce production costs and quality costs, and improve productivity. In the process of research and practice, we have gradually mastered the six Sigma DMAIC method, familiar with the measurement system analysis, control charts, process failure modes and consequences analysis, Minitab software, and other tools. And in the project's team activities to enhance the team's ability to collaborate.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：F273.2;F426.4
【参考文献】
相关期刊论文 前3条
1 李军军;吴政球;谭勋琼;陈波;;风力发电及其技术发展综述[J];电力建设;2011年08期
2 苑玉凤;六西格玛管理的要点[J];汽车科技;2004年06期
3 崔传涛;;汽轮发电机组轴系找中心计算方法[J];华电技术;2011年01期
本文编号：2450664
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2450664.html
