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題名 | 快速繪製製程能力指數Cp和CpK圖 |
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作者 | 楊烈岱; 邱創鈞; 黃水金; | 書刊名 | 南開學報 |
卷期 | 7(下) 民91.06 |
頁次 | 頁785-793 |
分類號 | 494.56 |
關鍵詞 | 統計製程管制; 管制圖; 製程能力指數; Statistical process control; Control chart; Process capability index; |
語文 | 中文(Chinese) |
中文摘要 | 統計製程管制(Statistical Process Control)應用於製造業的品質管理,使產品品質的提升,成本降低,已成功為企業界創造競爭力。統計製程管制中管制圖是製程管制的主要工具,其目是為 (1)降低製程變異 (2)發現並解決製程上的問題。當製程處於穩定狀態(在管制內),此時製程能力指數(Cp和Cpk)可以被使用以了解該製程能力並進行決策分析。傳統上,Cp和Cpk圖必須了解產品規格,製程平均值及標準差,方能經計算產生。且當製造工程師只有Cp和Cpk值時,並不易知道Cp和Cpk圖長得如何?因此,為有此的監督製程並迅速反應問題對策,快速繪製製程能力指數Cp和Cpk圖,實有其必要性。本研究在探討如何快速繪製製程能力指數Cp和Cpk圖,並以實例說明其流程。 |
英文摘要 | Statistical process control has been applied successfully in quality control to increase quality and decrease cost in industry for decades. Control chart is the major tool of the statistical process control used to improve product quality, two major goals of statistical process control are (1) to reduce product variability (2) to find out and overcome the problems in the process. When the process is under control, the process capability index can be applied to understand the process situation and then the decision-making can be made to deal with the problems. Traditionally, the Cp and Cpk diagram cannot be drawn until the parameters (customer's specification, process and deviation) were obtained. At the same time, with only the Cp and Cpk value, the quality or manufacturing engineer cannot figure out the process problem easily. Therefore, there is a need to generate a quick plot in order to draw the process capability index diagram to response the problem quickly. This research is to demonstrate the approach of quick plotting the process capability index diagram, and some examples will be also shown to estimate the efficiency of plotting Cp and Cpk diagram. |
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