Batch production

In batch production, a production order ( lot) as (closed ) post goes through the manufacturing stages, with hang up a single batch each unique set-up costs incurred.

Characteristic of the batches, the Losauflagekosten incurred at the beginning and at the end of the manufacturing process regardless of the order of the varieties and size of the lot and thus are fixed. These include conversion costs for adapting the workplace, clamping of the tools, providing the according to the parts list and production lot defined factor of production parts, teardown and cleaning.

The unit costs include prorated Losauflagekosten and thus depend on the lot size:

The production costs correspond to the cost rated working hours (personnel and equipment working time) and fall as well as material costs, regardless of the type of production to. Because of the first term in the above formula, however, the unit cost behavior gradually decreased with increasing batch size. With a lot size of one is order production, it tends to infinity is a series production before. This type of production is thus between individual production and series production.

Depending on whether the extradition is already possible at the completion of a portion of the lot or only when the entire lot has been produced, a distinction is made between open and closed batch production. The latter is for example the case when individual pieces at the end of the manufacturing process together receive a stamping and en bloc left the factory. The type of production is crucial for determining the storage costs and thus influences the optimal lot size that can be determined, for example using the classic Losformel.

Batch production

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