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Resources can be held even across different production orders such as semi-product and product. For instance, trays or containers which are consecutively used through semi-product and product steps are retained. In the following example, the resources are trays and the number of resources is proportionate to product quantity. With use of leveling option, a feasible plan is obtained. |
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 Scheduling result with resource retention feature (as well as resource-proportionate-to-product feature and leveling ) |
Scheduling result without resource leveling (Unfeasible plan) |
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When a tank plays two roles of making up content and discharging it to downstream line, the next production cannot start until the current content is used-up. In the following scenario, a make-up vessel produces Semi-product A and B, which are filled in bottles at three filling lines. If Semi-product A is produced in the tank, the next production of Semi-product B cannot start until Semi-product A is used up. |
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| Scheduling result in consideration of occupied period and also consideration of disallowing pararell feeding |
Scheduling result without consideration of multi-functional tank feature |
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This feature is used when a machine always produces a pair of parts at once, like stamping machines. The stock of each part is managed independently. |
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Sales order list  |
A pair of products is made at the same time  |
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R-door and L-door are always made as a co-product. However, according to the sale order list, 100 L-doors remain. This extra portion of products is stocked for the next usage |
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