Just in time


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Just in time

  1. 1. www.a2zmba.com
  2. 2. Definition JIT is a manufacturing system whose goal is to optimize processes and procedure by continuously pursuing waste reduction It is both a philosophy and a set of methods for manufacturing. Although it has no single, agreed- upon definition ,JIT emphasizes waste reduction, total quality control, and devotion to the customer. www.a2zmba.com
  3. 3. Evolution of JIT The history of Japan since world war II is the history of a developing economy, especially manufacturing. The Japanese economy was also ruined and faced the challenge of transition from wartime to a peacetime economy with very resources. This scarcity of resources was a key factor in the evolution of the Just-In-Time philosophy. www.a2zmba.com
  4. 4. The Seven Wastages Shigeo Shingo, a recognized JIT authority and engineer at the Toyota Motor Company identifies seven wastes as being the targets of continuous improvement in production process. By attending to these wastes, improvement is achieved. www.a2zmba.com
  5. 5. Contd… Waste of Overproduction Waste of Waiting Waste of Transportation Waste of Processing itself Waste of Stocks Waste of Motion Waste of Making Defective Products www.a2zmba.com
  6. 6. Japanese Manufacturing Techniques Produce what the customer desires Produce products only at the rate the customer wants them Produce with perfect quality Produce by methods that allow people to develop www.a2zmba.com
  7. 7. • Produce with no waste of labour, material, or equipment; every move has a purpose so there is zero idle inventory • Produce instantaneously – with zero unnecessary lead time www.a2zmba.com
  8. 8. Minimizing Waste: Group Technology (Part 1) • Using Departmental Specialization for plant layout can cause a lot of unnecessary material movement • Using Departmental Specialization for plant layout can cause a lot of unnecessary material movement www.a2zmba.com Saw Saw Lathe PressPress Grinder LatheLathe Saw Press Heat Treat Grinder Note how the flow lines are going back and forthNote how the flow lines are going back and forth
  9. 9. Minimizing Waste: Group Technology (Part 2) • Revising by using Group Technology Cells can reduce movement and improve product flow • Revising by using Group Technology Cells can reduce movement and improve product flow www.a2zmba.com Press Lathe Grinder Grinder A 2 BSaw Heat Treat LatheSaw Lathe PressLathe 1
  10. 10. Minimizing Waste: Just-In-Time Production www.a2zmba.com • Management philosophy • “Pull” system though the plant • Hydraulic Push Systems WHAT IT IS • Employee participation • Industrial engineering/basics • Continuing improvement • Total quality control • Small lot sizes WHAT IT REQUIRES • Attacks waste • Exposes problems and bottlenecks • Achieves streamlined production WHAT IT DOES • Stable environment WHAT IT ASSUMES
  11. 11. JIT Implementation Requirements: Design Flow Process Link operations Balance workstation capacities Redesign layout for optimum flow Emphasize preventive maintenance Reduce lot sizes Reduce setup/changeover time www.a2zmba.com
  12. 12. JIT Implementation Requirements: Total Quality Control Worker responsibility SQC in place Enforce compliance Fail-safe methods (poka-yoke) www.a2zmba.com
  13. 13. JIT Implementation Requirements: Work with Vendors Reduce lead times Frequent deliveries Project usage requirements Clear Quality expectations www.a2zmba.com
  14. 14. JIT Implementation Requirements: Reduce Inventory More Look for other areas to reduced materials Minimize Stores Minimize Transit Carousels Conveyors www.a2zmba.com
  15. 15. JIT Implementation Requirements: Improve Product Design Standard produce configuration Standardize and reduce number of parts Align Process design with product design Quality expectations www.a2zmba.com
  16. 16. JIT Implementation Requirements: Measure Performance Emphasize improvement Track trends www.a2zmba.com
  17. 17. JIT in Services (Examples) Organize Problem-Solving Groups Upgrade Housekeeping Upgrade Quality Clarify Process Flows Revise Equipment and Process Technologies www.a2zmba.com
  18. 18. JIT in Services (Examples) Level the Facility Load Eliminate Unnecessary Activities Reorganize Physical Configuration Introduce Demand-Pull Scheduling Develop Supplier Networks www.a2zmba.com