1
Q
JIT
A
Production system in which processing, and movement of parts/modules/work-in-process occur just as they are needed, usually in small batches
2
Q
Big JIT
A
philosophy of waste reduction and
continuous improvement = lean production
3
Q
Goals of lean production
A
- eliminate disruptions
- make system flexible
- eliminate waste
- continuous improvement (Kaizen)
The ultimate goal is a balanced system.
smooth, rapid flow of materials through the system
4
Q
JIT/Lean System Sources of Waste
A
- Overproduction
- Over processing
- Product defects
- Unnecessary transportation
- unnecessary inventory
- inefficient work methods
- waiting time
employee underutilization
5
Q
Kaizen (continuous improvement)
A
- improvement to be done gradually and continuously
- everyone should be involved
- Does not require huge sums of money
- can be applied anywhere
- learn by doing
- rely on observation, data, and scientific thinking
6
Q
Balanced system
A
Workload distributed evenly among workstations
Takt time = net available time / daily demand
7
Q
Production flexibility
A
- reduce changeover (=set-up time
- cross-train workers
- use many small machines
- safety stocks
- keep some idle capacity
8
Q
Small Lot Sizes
A
- less WIP inventory
- less rework and inspection
- more system flexibility
9
Q
SMED
A
Single-minute exchange of die
System for reducing change over time
Make set-up activities external where possible (does not require stopping the machiine)
