Just-In-Time and lean production systems - Just-In-Time philosophy; lean production
6 important questions on Just-In-Time and lean production systems - Just-In-Time philosophy; lean production
What is the idea behind the Just-In-Time(JIT) philosophy?
What is lean production (2x)?
- Lean production supplies customers with exactly what the customers wants, when the customers wants, without waste, through continuous improvement
- The Western implementation of JIT
- (JIT is uitgevonden in Japan)
- (overlapt grotendeels JIT)
What are the 7 wastes of JIT?
- Overproduction
Waiting - Transportation
- Inefficient processing
- Inventory
- Unnecessary motion(=onnodige handeling)
- Products defect
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What are 4 possibilities by which variability occurs?
- Employees, machines and suppliers produce units that do not conform to standards, are late, or are not the proper quantity
- Engineering drawings(=technische/bouw tekeningen) or specifications are inaccurate
- Production personnel try to produce before drawings or specifications are complete
- Customer demands are unknown
- Vb in restaurant, maaltijd terugkrijgen. Klant vraagt aan ober een beetje pittig, maar wat is nou beetje pittig. In Thaise keuken wel wat anders dan in bv de Nederlandse keuken
Product niet per se fout, maar sluit niet aan op wensen van de klant
What is a push and what a pull system? To what are they related?
- Push system: material is pushed into downstream workstations regardless of whether resources are available
- Pull system: material is pulled to a workstation just as it is needed
- Push and pull control are related to the position of the Push-Pull Boundary (CODP; 'KlantenOrder-Ontkoppelingspunt'=KOOP)
How do you integrate MRP and JIT?
- Small buckets (daily, hourly) approach (or even bucketless approach) and back flushing
- Balanced flow approach: use MRP for planning and JIT for execution(=uitvoering)
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