Meaning of heijunka
Heijunka
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Glossary of manufacturing terms
Meaning and definition of heijunka :
Heijunka—The creation of a “level schedule” by sequencing orders in a repetitive pattern and smoothing day-to-day variations in total orders to correspond to longer-term demand. For example, if customers during a week order 200 of product A, 200 of Product B, and 400 of Product C in batches of 200, 200, and 400 respectively, level scheduling would sequence these products to run in progression A, C, B, C, A, C,B, C,A, C,… Similarly, if customer orders totaling 1000 products per week in batches of 200 products on day one, 400 on day two, zero on three, 100 on day four, and 100 on day five, the level schedule would produce 100 per day, and in sequence A, C, A, B,… Some type of level scheduling is unavoidable at every producer, mass of lean, unless the firm and all its suppliers have infinite capacity and zero changeover times. However, lean producers tend to create excess capacity over time as they free up resources and to work steadily at reducing changeover times so short-term discrepancy between heijunka schedule and actual demand is steadily minimized, aided by level selling.
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Source : http://www.cwu.edu/~cattinw/Courses/MET_345_Production_Tech/Manufacturing%20Glossary.doc
Source web site : http://www.cwu.edu/~cattinw/Courses/MET_345_Production_Tech/345_Home_page_1.htm
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Glossary of manufacturing terms
Heijunka
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