Heijunka

Heijunka (平準化) is Japanese term that refers to a system of production smoothing designed to achieve a more even and consistent flow of work. Heijunka as a concept is closely related to lean production and just in time manufacturing.Heijunka means two different, but related, things. One is the leveling of production by volume. The other is leveling production by product type or mix.
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The act of leveling the variety or volume of items produced at a process over a period of time. Used to avoid excessive batching of product types and volume fluctuations, especially at a pacemaker process.