MIXED MODEL ASSEMBLY SCHEDULING BY CONSIDERING ASSEMBLY TIMES AND PARTS PRICES IN A SINGLE WORKSTATION

Just-in-time production systems are intended not only to trim total inventory levels, but also to trim the total inventory value and to thereby increase profits. We have proposed a heuristic method, Price Based Goal Chasing Method (PBGC), for different parts compositions and different parts prices in a mixed-model assembly scheduling situation at a single work station. The method is based on price-based goal chasing method to decrease variations in purchase expenses of parts. In this paper, we propose a new heuristic method, Assembly Time and Parts Prices Based Goal Chasing Method (TPBGC), considering the different assembly times of respective products. In addition, problems of neglecting the different assembly times of products are discussed through comparison of results obtained using PBGC and TPBGC. Numerous better results demonstrate the effectiveness of the new heuristic method.