To Pull or Not to Pull: What Is the Question?

Manufacturing and Service Operations Management - Tập 6 Số 2 - Trang 133-148 - 2004
Wallace J. Hopp1, Mark L. Spearman2
1Department of Industrial Engineering and Management Sciences, Northwestern University, Evanston, Illinois 60208
2Department of Industrial Engineering, 3131 TAMU, Texas A&M University, College Station, Texas 77843-3131

Tóm tắt

The terms pull and lean production have become cornerstones of modern manufacturing practice. However, although they are widely used, they are less widely understood. In this paper, we argue that while the academic literature has steadily revealed the richness of the pull/lean concepts, the practitioner literature has progressively simplified these terms to the point that serious misunderstandings now exist. In hopes of reducing confusion, we offer general, but precise definitions of pull and lean. Specifically, we argue that pull is essentially a mechanism for limiting WIP, and lean is fundamentally about minimizing the cost of buffering variability.

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