Abstract
In recent years, efficient and agile manufacturing is aimed at in many manufacturing industries. In sheet metal processing, reducing the waste of raw materials and managing the suitable production schedule are the important factors for such manufacturing. In order to reduce the waste of sheet metal, the optimal cutting layout is determined by nesting. 0n the other hand, the manufacturing sequence for all manufacturing processes is decided through scheduling after nesting. Typically, nesting and scheduling have different objectives essentially, so they have been considered separately in each management sector. However, they are affected with each other and there occurs a certain trade-off between them. Therefore, those problems should be considered simultaneously in order to increase the efficiency of entire manufacturing activity. Under such understanding, we have proposed an integrated method of scheduling and nesting. In this method, we apply Bottom Left algorithm and Dispatching rule in order to solve the nesting problem and the scheduling problem respectively. In this study, to enhance the ability of nesting method, we propose the re-assignment method. Finally, we verify the effectiveness of the proposed method through some computational experiments.
