六標準差起源於1980年代由摩托羅拉所提出，此方法運用統計分析工具進行製程上的改善，在現今有許多企業基於六標準差的觀念進行流程改善以提升生產效率，使得流程改善上更具有彈性。 本研究使用六標準差改善生產流程，研究個案公司在政府國防自主政策下訂單日益增加，而在產線反應出產能吃緊狀況。為了要解決產線產能不足的問題，專案成員在研究過程中運用六標準差DMAIC的手法來進行研究分析。在改善過程當中使用5W、SIPOC來定義面臨到的問題，再使用資料蒐集、流程圖來衡量問題，後續使用魚骨圖、巴瑞多圖來找出主要影響關鍵因素並提出可行的改善方案。在改進階段，本研究使用DoDAF系統參考模型繪製出作業觀點以及系統觀點，再利用系統觀點的分析結果加入改善方案，於系統上實作並得到顯著的改善，最後訂定標準作業程序提供給將接觸到此流程的人員一個標準作業規範。 本研究經過DMAIC的改善過後提升了機台使用率以及降低多張工單的生產週期，除了有形效益外也增進了資料正確性的無形效益。 ;Six Sigma was originated in the 1980s by Motorola. This method improves the production efficiency by statistical tools. Many companies improved production efficiency and make process more flexible by six sigma. This study used six sigma to improve the production process. The case study company’s production lines become overloading because of increasing number of order from the government. To enlarge the capacity of production line, the project members used six sigma DMAIC method to study and analysis in the process. 5W(what, who, when, where, why) and SIPOC (supply, input, process, output, customer) are used in the Define phase to define the challenges. Data collection and flow charts are used to measure the problems. The fishbone diagram and Barrydo diagram are used to find out the key factors that affecting feasible improvement schemes. In the Improvement phase, we use DoDAF(United States Department of Defense，DoD) system to present the operational view and systematic view, then implement a solution based on the analysis results of the systematic view and get significant improvement. Finally, in the Control phase, we submit a standard operating procedure to who will be involved into the process. By applying this solution, the production efficiency was increased and the production cycle of multiple orders was reduced. Otherwise, there also provide the benefit of data correctness.
