| Summary: | 碩士 === 國立臺灣大學 === 工業工程學研究所 === 87 === Facility layout can be classified as functional, product, process, fixed, and group technology layout. To cope with a wide range of production modes and dynamic product demands, a factory may best utilize more than one type of facility layout. Modern factory shops are characterized by rapid change of machine technology, automated material handling, and computer-integrated manufacturing execution system. On the one hand, rapid changes in machine technology and product demands intensify the need to rearrange facility layout. On the other hand, automated material handling systems and manufacturing execution are enabling technologies that lessen the needs to physically move machines around when facility layout must be changed. Together, these two development trends provide the basis for designing and using virtual manufacturing cells.
This thesis studies the design of virtual manufacturing cells. Virtual manufacturing cells are classified into three types: process cell, product cell and Group Technology cell. A three-step procedure is next proposed. Process cells are first identified based on special requirements of manufacturing processes, product cells are created based on the criteria of product demand volume, Group Technology cells are reserved for all remaining processing requirements. This thesis also reports a methodology for assigning parts to cells. The methodology is based on the concept of load balancing, and utilizes Mean Value Analysis technique.
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