臺灣工具機產業在國際市場的優異表現，已引起各國的矚目。本研究以網路組織 的觀點來探討其競爭力所在。本研究選擇被視為集工具機產業大成的砲塔型銑床之產業分 工體系為研究對象，對六家具代表性的企業及協力體系，進行個案研究，探討工具機產業 分工網路的特質及其成功條件，試圖釐清其低成本、短交期的主要原因。 　　本研究發現，此分工網路不論在零組件共用和產品差異性優勢的樹立上，抑或在規模 經濟、廠內外包、專業協力廠和合理物流網路上，甚至在模具共用、距離近等協力體系的 資訊交換和長期交易上，均產生極大的附加價值。這些發現，對我國產業，特別是工具機 產業生態的維持、中衛體系的發展、產業外移和升級等問題，應具涵義。

　　　　　The achievements of Taiwan's machine tool industry have now received attention internationally. This research uses networking organization theory to analyze the basis of it's competitive advantages. This investigation focuses on the production of the Bride Port milling machine, which is considered representation of the machine tool industry. We do case studies of six firms and their suppliers, which are representative of the industry, by analyzing the characteristics and fundmental conditions of the network of the machine tool industry's division of labor, and attempt to find the factors allowing low cost and short delivery time. This research has discovered that the networking of division of labor for the Bridge Port milling machine has added value in many respects. First is the use of common components & Parts and the advantage of the product diversification; the second respect is in economies of scale, the use of outside workers to work in central factories, specia suppliers, and a compatible material flow network; and last of all, in the use of standard molds, the short distance between suppliers and factories, and the consequent expediency of the system's data interchange and the members' long term relationship. These findings are very meaningful to Taiwan's industrial development. They can help Taiwan's machine tool industry maintain industrial ecology and develop a center-supplier system. They also assist the industry in advancing to a higher level and in transplanting overseas.