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The Lean Enterprise

The Lean Enterprise. Push versus Pull. Lean Foundations Continuous Improvement Training. Purpose. The purpose of the module is to allow you to become familiar with the distinction between Push and Pull systems. . Pull and Flow . . . . Principles of Process Analysis. Flow Pull Systems.

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The Lean Enterprise

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  1. The Lean Enterprise Push versus Pull Lean Foundations Continuous Improvement Training

  2. Purpose The purpose of the module is to allow you to become familiar with the distinction between Push and Pull systems. freeleansite.com

  3. Pull and Flow . . . .Principles of Process Analysis • Flow • Pull Systems freeleansite.com

  4. Actions Required to get improved f - l - o - w • Batch Size • Reduce Set-Up times and cut lot sizes • “Fewer piece flow” - 1 piece is usually better • People • Multiple Skill Development • Multiple Process Handling • Materials • Eliminate “Isolated Islands” • Machines • Laid out in processing order • “right” machines to ensure the flow freeleansite.com

  5. Pull and Flow . . . .Principles of Lean Thinking • Flow • Pull Systems PUSH vs. PULL SYSTEMS freeleansite.com

  6. Push vs Pull: What IS the Difference ? A requirement of any production operation is to enable everyone to know exactly: - what product is needed - by when - in what quantity There are two ways to do it: Here’s One Way - issue PRODUCTION SCHEDULES to every process using the parts from one process to drive the work at the next process - in essence PUSHING THE PARTS THROUGH THE SYSTEM freeleansite.com

  7. Push vs Pull: What IS the Difference ? A requirement of any production operation is to enable everyone to know exactly: - what product is needed - by when - in what quantity There are two ways to do it: ONE WAY - issue PRODUCTION SCHEDULES to every process using the parts from one process to drive the work at the next process - in essence PUSHING THE PARTS THROUGH THE SYSTEM ANOTHER WAY - letting a process withdraw the parts from a preceding process or PULLING THE PARTS THROUGH freeleansite.com

  8. Push Systems • Driven by Forecasts • Parts are sent to the next Operation or stored in WIP • The second operation continues even if there is a large amount of WIP from the first operation • Buffers cover problems • Expeditors push Hot parts PUSH SYSTEMS HAVE NO DISCIPLINE ON INVENTORY More is always better freeleansite.com

  9. Pull Production The Customer usage rate determines the production rate in a PULL SYSTEM. “TAKT TIME” is … that customer usage rate. freeleansite.com

  10. Pull Production • Establishment of Pull systems between operations in the same plant • Connection of operations that are at a distance from each other • Elimination of inter-departmental scheduling freeleansite.com

  11. Pull Production • Produces only what’s required by the next operation • The user withdraws from the producer • Kanbans or Visual Systems signal the need for more • Everyone sees what’s required freeleansite.com

  12. The Lean Enterprise Push versus Pull Lean Foundations Continuous Improvement Training

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