Kabushiki Kaisha Toshiba

Ken Iriuchijima

Hideo Sakamoto

Mutsumi Fujihara

A production plan is made for a production line for producing finished products from a raw material. Based on the stock number of works in respective process steps at a planning time, the number of works processed at the respective process steps up to the planning time is calculated as the current cumulated processed works of the respective process steps. The target of the stock number of works in the respective process steps at a planned time following a passage of a plan period is calculated based on a target production representing the number of finished products outputted up to the planned time and an average cycle time of production from the raw material to finished products. The target cumulated processed works of the respective process steps at the planned time is calculated based on the target of the stock number of works in the respective process steps. The number of works necessary to be processed in the respective process steps during a period from a planning time to a planned time is calculated, as a process step load of the respective process steps, based on the current cumulated processed works of the respective process steps at the planning time and the target of the total number of the respective process steps at the planned time.

Production planning method, a storage medium and a production planning apparatus

A production control is applied to control a production machine for producing a product from a material in a process divided into a plurality of steps. The execution numbers are counted on a per-step basis. A priority order is allocated on the basis of the counted execution numbers. The information relating to the priority order is output to the production machine. The production machine can select the next step in accordance with the input priority order. The execution numbers can be properly controlled by such control method on the per-step basis.

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Yokohama, Japan

Ken Iriuchijima