Production plan apparatus

摘要

A plurality of takeoff objectives are set based on a takeoff request with respect to a target step in production lines, at least throughput of each production line, and basic information of a production plan for each production line, production plan data satisfying the plurality of takeoff objectives is obtained, takeoff objective delay data indicating that the production plan data is delayed with respect to the plurality of takeoff objectives is obtained, and at least a degree of delay of the product is displayed based on the production plan data and the takeoff objective delay data in accordance with each of the plurality of takeoff objectives in a preset display conformation.

主权项

1. A production plan apparatus comprising:
a processor; a storage device connected to the processor; and a display device connected to the processor, wherein the storage device stores a takeoff request to manufacture a preset quantity of a product corresponding to a plurality of preset items at a target step in production lines by a delivery deadline, throughput of each production line constituting at least the target step, and basic information of a production plan for each production line, wherein the processor comprises: a multiple-takeoff-objective setting section that sets a plurality of takeoff objectives each having different priorities based on the takeoff request stored in the storage device, the throughput of each of the production lines, and the basic information of the production plan for each of the production lines; a production plan calculating section that obtains production plan data satisfying the plurality of takeoff objectives set by the multiple-takeoff-objective setting section; a takeoff objective delay calculating section that obtains takeoff objective delay data indicating that the production plan data created by the production plan creating section is delayed with respect to the plurality of takeoff objectives set by the multiple-takeoff-objective setting section; and a takeoff amount creating section that displays on the display device at least a degree of delay of the product based on the production plan data obtained by the production plan calculating section and the takeoff objective delay data obtained by the takeoff objective delay calculating section in accordance with each of the plurality of takeoff objectives in a preset display conformation,
wherein the multiple-takeoff-objective setting section sets a first takeoff objective included in the plurality of takeoff objectives required to satisfy the takeoff request by the delivery deadline, a second takeoff objective obtained based on a restriction in throughput for each date and each of the items with respect to a step when manufacturing the product at a next step of the target step, and a third takeoff objective obtained by leveling the second takeoff objective in accordance with each of the dates, a highest priority being set to the first takeoff objective, a second highest priority being set to the second takeoff objective, and a lowest priority being set to the third takeoff objective,wherein the production plan calculating section digitizes each priority set to each of the items of the product and each of the priorities for each of the first to third takeoff objectives in accordance with a value of each priority, and carries out optimization processing of minimizing a sum total of a product of a delayed quantity for each of the items of the product and the priority value of the delayed first to third takeoff objectives after digitization to obtain the production plan data satisfying the first to third takeoff objectives set by the multiple-takeoff-objective setting section, and wherein, when said each priority of an item i in respective of the items of the product is Pi, and the production plan data T is calculated by said optimization processing by minimizing:
item Σ(delayed days×quantity×Pi)×W1 +item Σ(delayed days×quantity×Pi)×W2 +item Σ(delayed days×quantity×Pi)×W3,where W1, W2 and W3 represent the first, second and third takeoff objectives.