A GT Layout Model for Tandem AGV - BasedSystem
|關鍵字:||單元製造;群組技術;設施規劃;共用機器;連遞式無人搬運系統;cellular manufacturing;group technology;layout;shared machine;tandem AGV system|
In recent years, cellular manufacturing (CM) has gained a paramount popularity in both academic researches and industrial applications. To successfully implement a cellular manufacturing system (CMS), group technology (GT) for cell formation which groups parts with similar design and manufacturing features into part families and clusters the corresponding machines into cells becomes the first and one of the most important planning issues. The next step is to properly lay out machines as well as cells onto the shop floor. There are a hack of research papers dealing with the cell formation problems. Few focus on the cell layout issues. In most traditional layout design algorithms, the material handling system is usually not considered until the system has been laid out. However, an unrealistic assumption of machine distance employed in the layout process might be very different from the one in the real world environment after a material handling systems is selected. The assumption may cause the so called "optimal" layout turn out to be a terrible design. In this research, a rigorous procedure is presented to lay out a CMS whose material handling system is a tandem automated guided vehicle (AGV) system for which is very suitable for CMSs. This layout procedure not only can calculate the flow distances correctly but also properly determine the locations of shared machines as well as corresponding transfer stations among cells so that the total intra- and inter-cell flow distances can be minimized. To increase layout flexibility, a index for determining cell closeness is also incorporated. This proposed procedure is more realistic and practical to the real world problem solving.
|Appears in Collections:||Thesis|