A Designing Method of Mixed Buffer System : A Study on the Production Systems for the Components of Prefabricated Houses via Precast Concrete Panel (Part V)

Abstract

This paper deals with a problem on designing a mixed buffer system in the production system for the components of prefabricated housed by precast concrete panel.In such a case, standard components and the special components ordered by each customer's specification are produced.A metal form is requied to produce one component.In designing the production system, it is important to determine the most economical adding metal forms for standard components and level safety stock of standard components in order to shorten a lead time for shipping under the changes of arrival interval of order, standarizational ratio which is the proportion of standard components in all components of an order and the processing time of metal form for the special component.In this paper, the model which uses the periodical scheduling method with a forecast demand for standard components and with an actual demand for the special components is developed.As a result, the structural formulations of lead time are presented and the effects of the adding number fo metal forms for standard components and the safety stock on teh lead time are clarified.And then, the procedure to determine the capacities of the adding metal forms and safety stock is proposed.