A類工件外包加工之可行性分析- 以CNC臥式搪銑床為例

Feasibility Analysis of Type-A Workpiece Outsourcing for CNC Horizontal Boring and Milling Machine

吳英郎(Wu,Ying lang)

指導教授 ： 陳明德

國立中正大學/管理學院/高階主管管理碩士在職專班/碩士(2014年)

並列摘要

The shock waves resulting from the modern trends of internationalization and globalization have produced major changes that affect the techniques of manufacturing that exist across the face of the modern world. This includes the manufacture of CNC machine tools, which due to my immediate experience prior to my work on this paper has become one of the corollary topics of this study. In terms of the content of the pending writing, the effects of modern production mechanics need to be considered at a new angle, new at least relative to the way one can read about them in the early post World War 2 literature. WW2 was an era in which the individual human stood tall and sweaty like a black smith, with a hammer (or at least an electric drill or alternative simple electrical device) in one hand and the piece being worked on in the other hand. However, that technically antique world is essentially past and is evolving increasingly rapidly as the days go by.

One cannot manufacture modern electronic CNC machine tools using WW2 technology. New styles of equipment as well as new styles of thinking are required. Newer styles of thinking will further be required to supplant the current limitations of our minds and capacities. In fact, this paper is dedicated to a momentary alleviation of such limitations. Actually, the modern technological revolution is happening so rapidly that such alleviations tend to be very brief. This is one of the prices of rapid evolution.

This paper attempts to make this point in terms of the modern capabilities and optimal use (to my current best estimate) of a group of serial processes involving inter-functional teamwork and a division of our present standards of labor. With adequate design abilities, skillful use of collaboration and management of outsourcing can lead to truly remarkable advantages with regard to the continuous integration of resources and the application various industrial expansionist strategies. A win-win value-doubling strategy for the firm owner and its various professional subcontractors is currently a common endeavor. However, it seems to me personally that such goals are in fact excessively small, but such issues will not be a topic.

In fact, this study remains linked to strictly modern goals and ambitions. We have the basic framework of a large-to-medium (LME) scale CNC machine tool manufacturing company in Taiwan. The company manufactures some of the largest of the current CNC machine tools, but there is incompatibility between the available CNC machine tools and the production lines that manufacture the equipment.
Nor do the specific tolerances and specifications of individual customers exactly fit the production capacities of the factory. For example, the CNC horizontal boring and milling machines (HBM) and typically ordered by the company’s customers require integration of specific assets into the requirements of the necessary manufacturing processes. The ability to meet the specific requirements of the customers implies that the company has a totally adequate supply of all the multi-capacity varied machines necessary to satisfy the production line requirements of each customer order accepted by the company. In fact, however, the demands far exceed the company’s manufacturing capacity.

After investigating the machine for desirable operation with regard to the totality of the current job orders and defining the processing necessities, it becomes possible to list all the necessary processes. However, it becomes rapidly clear the company does not in fact have the equipment and ability for all these steps. Thus, it becomes clear that some of these steps will have to be outsourced. This becomes clearer after consideration of the calculation of equipment cost investment if we were to do the total manufacturing event in house. It should be recalled that we are considering manufacture of a relatively small number of large and heavy Type-A workpieces. Such workpieces are subject to evolution to higher technological forms as the product develops. Such workpieces require stress relieving, heat treatment, precise surface grinding and so on. New processes may be added. Old processes may be removed or modified. With regard to the dollar question, maximal dollar return involves not manufacturing this small number of large and durable equipment. A study of the cost factors indicate that, for present and foreseeable manufacturing operations, it is a superior plan to collaborate professionally with suitable partners.

Former studies of a similar nature dealt mostly with small and medium size light-weight components produced in relatively large numbers. The respective firms produced parts of significantly consistent sizes and surface finishes. This present study will test the theoretical 11 sensitivity analysis (SA) using 5 Type-A workpieces for HBM units. By means of assistance from Lingo linear programming, the results will demonstrate that outsourcing and collaboration with professional subcontractors will optimize production management, manufacturing flexibility, tangible performance and company profit.

並列關鍵字

Linear Programming ； Collaboration ； Subcontractor ； Machine Tools ； Outsourcing

參考文獻

Uncertainty, Collaboration and Management Control System.” Taiwan National Science Council. NSC96-2416-H-194-030-MY2.

1.陳明德、陳武林(Mark Chen and Wu-Lin Chen, 2012)。管理科學-實用管理決策工具(Practical Management Science)。滄海書局。

References (Chinese)

References (English)

4. Cao, M. and Zhang, Q. 2011. “Supply chain collaboration: Impact on collaborative advantage and firm performance.” Journal of Operations Management 29: 163-180