Assembly Sequences Planning of Combine Factory Assembly Subcontractors

• Main Authors: Chun-Lin Chiang, 江俊霖
• Other Authors: 鄭元杰
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/81280514525267340515

碩士 === 元智大學 === 工業工程與管理學系 === 91 === In the past, research related to assembling sequence planning has been based on individualized factories. Until recent years, for the purposes of industrial specification and production, many factories gradually build other sub-factories or merge with other resources that force individualized factories bypass their own problems onto complex multi-factorial planning systems. Thus, an interconnected multi-factorial model is formed. Within the model, a product needs at least more than one factory to process its parts until it is finally completed. In assembly, each factory is responsible for only one part of the product. Therefore, current production mode and company manner do not support individualized factories, neither do they comply with the past trend of one-company-one-factory principle. To summarize, individualized factory assembly model is not applicable in the current production mode. Under the current trend that more diversification and specification is in effect, planning of an interconnected multi-factorial assembling sequence must be considered. Regarding the planning of an interconnected multi-factorial assembling sequence, the paper proposes two set of sub-assembly. The first set of sub-assembly is completed in an individualized factory, using an assembly status graph to establish an assembly precedence graph and determine the sub-assembly; the second set of sub-assembly is completed with several aggregated outcomes of chosen elements. One assumption is that the exact number of factories remains unknown until a factory sitemap is obtained that indicates the best solution. Also, the takeover action is determined by the concept of centralized satellite model which reveals the current status, and the choice sequence order is used to evaluate the minimum time cost. Then, several operation cost functions are developed to analyze parts that are about to be assembled, use SAST to search for all assembly sequence, and determine the best interconnected multi-factorial assembly sequence. The paper aims specifically for electronic products that are in need of assembly. The objective is to develop a systematic method and cost analysis trend in order to find the minimum cost of interconnected multi-factorial assembly sequence, thus keeping the cost of assembling parts at minimum.