PRODUCTION PLANNING METHOD AND PRODUCTION PLANNING SYSTEM FOR MIXED FLOWS OF PRODUCTION BY ORDER AND FORECASTING

摘要

In the production process where an ordered article and a forecast production article are mixed, parameters for defining production priority of each article are preset while assuming a case where the demand exceeds the available production capability, and priority is given to an article which must be produced first within the range of available production capability according to the marginal stock rate of each article. The marginal stock rate is determined by (effective stock amount/necessary stock amount) for a forecast production article. As for the ordered production article, a stock sufficient for delivery is required at the time of shipment. Accordingly, stock of that quantity (demand take-in amount) can be regarded as the necessary amount of stock while the currently completed products can be regarded as the effective stock amount. Thus, the marginal stock rate (effective stock amount/demand take-in amount) can be indexed.