基于SPC对Z机械公司产品质量问题的分析研究-企业管理专业论文.docxVIP

literature through the study, the paper control charts and process capability from both home and abroad study specifically addressed the SPC, good theoretical preparation for the empirical study below. The third part is the empirical study, first determine the object of study is the roughness of the flange products, the influence of the roughness factor theory and flange products exist from the human, machine, material, method, measure, analyze the main tool question; secondly roughness data collection, mapping mean - range control chart to monitor the production process, abnormal movements and analyze key processes leading to abnormal fluctuations point to determine the range of critical process parameters are reasonable, and further evaluation of the production process capability index is calculated processing capacity of the process; finally develop improvement measures for abnormal reasons, re-collect data and draw control charts, process capability indices are calculated to verify the effect of the improved. The fourth part is fuzzy comprehensive evaluation, from the economy, the level of process control, improve the quality of staff in the three aspects of the SPC Z implementation effect of the companys comprehensive evaluation. Key Words: Statistical Process Control ； Surface roughness ； Multiple regression analysis；Fuzzy comprehensive evaluation method 目 录 摘 要 ...............................................................................................................................I Abstract ............................................................................................................................. II HYPERLINK \l _bookmark0 1 引言 .................................................................................................................................. 1 HYPERLINK \l _bookmark1 1.1 研究背景 ................................................................................................................ 1 HYPERLINK \l _bookmark2 1.2