台灣手工具產業自越戰時期，因應美國對於戰爭的需求，開始重視手工具產業並提升其品質，而後經過三十多年的發展，台灣手工具產業在國際貿易上已佔有一席之地，2015年台灣手工具產業之產值達到1,112億新台幣，非動力手工具出口值排名世界第四，僅次於德國、美國以及日本。然而，自2003年起，台灣手工具最大出口國的寶座被中國所取代，其後台灣手工具產業依靠過往經驗以及技術基礎力挽狂瀾，儘管在產值部分屢創佳績，但面臨中國的市場壓力以及快速成長，過往經驗以及技術並不足以支撐台灣手工具產業發展。
為此，本研究旨在利用六標準差中的DMAIC手法，有系統的解決台灣手工具產業常見的問題，並以手工具產業當中出口值最高的手工操作扳手和扳手套筒 (HS Code 8204) 之加工廠商為個案公司進行研究，透過DMAIC手法，針對顧客所提出的要求進行改善，接著運用田口方法及NN+GA找出最佳參數設定以提升產品品質，減少機台停機等待時間，縮短出貨時間。

Because of the increasing needs of hand tools during Vietnam War, Taiwan began to put emphasis on hand tool industry. After three decades of development, the hand tool industry in Taiwan played a significant role in the international trade market. In 2015, the output value of hand tool industry in Taiwan achieved 111.2 billion NTD. The output value of non-power hand tool occupied the fourth place, merely behind Germany, the U.S.A. and Japan. However, the name of the largest exporter of hand tools has been replaced by China since 2003. The hand tool industry of Taiwan has tried to turn the tide base on the experience and technical basis since then. Despite of the remarkable output value, the experience and the technique from the past cannot support the hand tool industry to thrive under the pressure of the market in China and its fast growth.
Therefore, this study aims at using DMAIC from Six Sigma to solve the common problems in hand tool industry in Taiwan. A lathing company is chosen as a case study since the socket and wrench have the greatest output value among the hand tool industry. Through DMAIC, the company focuses on the voice of customer to improve its processes and uses the Taguchi method and neural network and genetic algorithms to optimize the lathe parameters to improve quality and reduce the waiting time and, therefore, improve the order fill rate.

摘要 I
Abstract II
目錄 III
表目錄 V
圖目錄 I
第一章 緒論 1
1.1研究背景與動機 1
1.2研究目的 2
1.3研究架構 3
第二章 文獻探討 4
2.1 手工具產業 4
2.1.1 手工具定義 4
2.1.2 手工具產業結構 4
2.1.3 手工具產業發展 5
2.2 六標準差 6
2.2.1 六標準差的發展 7
2.2.2 六標準差的意義 7
2.2.3 六標準差的結構 8
2.2.4 六標準差的手法 9
2.2.5 六標準差案例 10
第三章 研究方法 14
3.1 手工具產業之特性 14
3.2 六標準差方法論 15
3.2.1 執行六標準差的關鍵成功因子 15
3.2.2 定義(Define) 16
3.2.3 衡量(Measure) 18
3.2.4 分析(Analyze) 19
3.2.5 改善(Improve) 20
3.2.6 控制(Control) 20
3.3 田口方法 20
第四章 個案研究 23
4.1 案例背景 23
4.2 定義階段 24
4.2.1 專案章程 24
4.2.2 顧客的需求 27
4.2.3 高階流程圖 28
4.3 衡量階段 29
4.3.1 流程程序圖 29
4.3.2 量測系統分析 31
4.3.3 現況掌握 33
4.4 分析階段 34
4.4.1 特性要因圖 34
4.5 改善階段 37
4.5.1 田口方法 37
4.5.2 倒傳遞類神經網路 44
4.5.3 基因演算法 46
4.5.4 比較 46
4.6 控制階段 47
第五章 結論與未來展望 48
5.1 結論 48
5.2 未來展望 49
參考文獻 50

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