The Tools of Lean Value Stream Mapping（精益价值流程图的工具）.pdf

ASQ Section 1302 Summer 2004 Series Mahoney State Park The Tools of Lean - Value Stream Mapping Stan Gidley Managing Director Institute of Business Excellence July 15, 2004 Outline • Two Stories – 1 English, 1 Japanese • Definition of VSM • The limits of VSM • Present State Value Stream • Future State Value Stream • Conclusions • Reference Material Definition Value stream mapping: A pencil and paper tool used in two stages: 1. Follow a particular products production path from beginning to end and draw a visual representation of every process in the material and information flows. 2. Then draw a future state map of how value should flow. The most important map is the future state map. The Limits of Value Stream Mapping Beware the people preaching the panacea. VSM becomes extremely challenging - – In disjointed product development processes – Where there is no “product” to follow – Where there is high variety/low volume Fortunately there are other, more appropriate tools for these situations Mapping the Present State • Shows work processes as they currently exist • Provides understanding of the need for change • Allows understanding of where opportunities lie • Should be developed by a broad based team using the following structure Mapping the Present State Example: a shop with a 5-step manufacturing operation, provided by Strategos, Inc 1. Draw Customer, Supplier and Production Production Control icons Control