Question: A supplier to Toyota stamps out parts using a press

A supplier to Toyota stamps out parts using a press. Changing a part type requires the supplier to change the die on the press. This changeover currently takes four hours. The supplier estimates that each hour spent on the changeover costs $ 250. Demand for parts is 1,000 per month. Each part costs the supplier $ 100, and the supplier incurs an annual holding cost of 25%.
a. Determine the optimal production batch size for the supplier.
b. Toyota would like the supplier to reduce their batch size by a factor of four; that is, if the supplier currently produces Q parts per batch, Toyota would like them to produce Q/ 4 parts per batch. What should the supplier do in order to achieve this result?

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  • CreatedNovember 06, 2015
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