- The document describes an exercise using a paper airplane assembly game to teach concepts of flow, line balancing, and Kaizen.
- Over 4 rounds, participants take on roles in the assembly line such as operators, inspectors, team leaders. Metrics like productivity, lead times, and quality are measured to see improvements from round to round.
- Changes between rounds include implementing pull systems, balancing workloads between operators, and introducing new tools and jigs to further optimize the line. The goal is to understand how standardized work and continuous improvement activities can enhance quality, safety, and productivity.
Air Plane Game Exercise Improves Flow and Productivity
1. Air Plane Game Exercise
- Flow, Line balancing, Kaizen
Inseong Kim
2. Game
• Exercise objectives and purpose
Create the Standardized work and understand why the STD work is critical to
Quality, Safety and productivity
Understand how we can link the STD work with operator balancing and Kaizen
activities
• What
Paper air plane game
• Where
In the training room
• How
4 rounds
See detailed roles on next page
Reflections by the teams
• Results
KPIs evolution from round 1 to 4
3. Lay out and Preparations
Work station
4
Work station
3
Work station
2
Work station
1
Team
leader
Material
handler
- A4 Paper - White, Yellow
- Label – Buffer, Law material
- Waste basket (Paper cup)
- Scissors
- Jigs, Raw material to make jigs
- Stop watch
- Scale (30 cm)
- Marker pens
- STD work document templates
- Flip chart (Metrics print)
Lay out
Preparations
Finished
goods
4. Roles
1 Material handler : Trainer can be a material handler
– Responsible to feed the line with raw material from the warehouse.
4 Operators
– Responsible to assemble according to the assembly instruction on each station
– Responsible to improve SQDC at own work station through Idea suggestion & Kaizen
1 Team leader / Supervisor
– Responsible to observe any difficulties and problems at the assembly stations
– Responsible to measure the cycle time by element each operator
– Responsible to drive Kaizen activity to improve SQDC
1 PDI inspector : Trainer can be a material handler
– Responsible for inspect any quality problems before delivering the finished goods to
customer
– Count the # of good parts and defected parts
6. Timings
Time Items Tasks
0:25 Game Introduction
0:10 Build Practice
0:10 Round 1 - Flow processing with Push
-Create STD work
-Measure the cycle time
0:20 Metrics & 1st Kaizen -Introduce pull
0:10 Round 2 - Flow processing with Pull
0:30 Metrics & 2nd Kaizen -Introduce operator balancing
0:15 Coffee
0:10
Round 3 - Flow processing with Pull &
operator balancing
0:40 Metrics & 3rd Kaizen -Introduce/improve tools/jigs
0:10
Round 4 - Flow processing with Pull,
operator balancing and improve tools/jigs
0:30 Metrics & Update STD work -Update STD work
0:30 Reflection by team Total productivity improvement
4:00 Tot End
7. Inspection specification
• Good visual quality
• Mismatch allowance : ± 2 mm
• Cutting tolerance : ± 2 mm
Width 15 mm ± 3 mm &
Height 15 mm ± 3 mm
20 ± 3 mm
8. Metrics
No Metrics
Round 1
-Push
Round 2
-Pull
Round 3
-Balancing
Round 4
-Tools/Jigs
1 Delivered Quantity
(Total trucks delivered)
2 Good Parts
(Total parts green OK)
3 % Green OK
4 Work In Process
(Raw material +Buffer + SWIP)
5 Lead Time (Sec)
6 # of operators 4 4 4 4
7 Time (Min) 8 8 8 8
8 Productivity
(Good parts/% of operator/Time)
9. Round 1 - Flow processing with Push
Work station 4 Work station 3 Work station 2 Work station 1
Team
leader
Material
handler
Finished
goods Law
material
Rule
• Material handler
- Feed the raw material (A4 paper-white) : 10 sheets for one delivery
- Feed the yellow A4 paper in 3 minutes to measure manufacturing lead time
• Operator
- Continue to work if there are materials available
- Possible to rest or play with smart phone if there are no WIPs
• Inspector : Check/count defected parts & feedback to team leader/operators
• Team leader
- Measure cycle time and Create Standardized work
- Evaluate team metrics results and communicate with operators
• FIFO : All materials should be kept the FIFO rule between processes
• 8 Min
• Use Scissors &
waste basket
10. Round 1 - Flow processing with Push
Push system : Supplier push the customer to accept their product
Inventory is unlimited
Inventory is increasing
Manufacturing lead time is too long
Big bottle neck operation
Other operator need to wait
Waiting = Waste
Unbalanced line between operators = Waste
Something is not right = Waste
• Problems & Improvement opportunity
11. Round 2 - Flow processing with Pull
Work station 4 Work station 3 Work station 2 Work station 1
Team
leader
Material
handler
Finished
goods
Buffer Buffer Buffer
Mat’l
Bin 1
Mat’l
Bin 2
Rule
• Material handler
- Feed the raw material (A4 paper-white) with 2-bin concept
- Feed the yellow A4 paper in 3 minutes to measure manufacturing lead time
• Operator
- Work only if there is no WIP in buffer
- Possible to rest or play with smart phone if there are no WIPs
• Inspector : Check/count defected parts & feedback to team leader/operators
• Team leader
- Evaluate team metrics results and communicate with operators
• 8 Min
• Use buffer label
12. Round 2 - Flow processing with Pull
Pull system : Customer pull the product from supplier when needed
More control of inventory
More organized work place
• Improvements
But there is still lot to improve
The product does not met the demand. Now where is the problem?
The line is not balanced.
- Operator 2 and 4 are doing a lot more work than others
But this time, the problem is because the line is not balanced. By balancing
it, it can solve the problem!
• Further Improvement opportunity
14. Round 3 - Flow processing with Pull & Operator balancing
Work station 4 Work station 3 Work station 2 Work station 1
Team
leader
Material
handler
Finished
goods
8 Min
Buffer Buffer Buffer
Mat’l
Bin 1
Mat’l
Bin 2
Rule – Same as Round 2
• But the workload is properly balanced / divided to stabilize process with balancing
• Material handler
- Feed the raw material (A4 paper-white) with 2-bin concept
- Feed the yellow A4 paper in 3 minutes to measure manufacturing lead time
• Operator
- Work only if there is no WIP in buffer
- Possible to rest or play with smart phone if there are no WIPs
• Inspector : Check/count defected parts & feedback to team leader/operators
• Team leader
- Evaluate team metrics results and communicate with operators
15. Round 3 - Flow processing with Pull & Operator balancing
Operator balancing
- The workload is properly balanced and divided to stabilize process
Shorter lead time with “QRPS” problem solving
• Improvements
But there is still lot to improve
- need to improved the quality
- need to reduce the cycle time
• Further Improvement opportunity
16. Round 4
-Flow processing with Pull, operator balancing & tools/jigs
Work station 4 Work station 3 Work station 2 Work station 1
Team
leader
Material
handler
Finished
goods
8 Min
Buffer Buffer Buffer
Mat’l
Bin 1
Mat’l
Bin 2
Rule – Same as Round 3
• But new tools & jigs are used to improve quality & reduce cycle time
• Material handler
- Feed the raw material (A4 paper-white) with 2-bin concept
- Feed the yellow A4 paper in 3 minutes to measure manufacturing lead time
• Operator
- Work only if there is no WIP in buffer
- Possible to rest or play with smart phone if there are no WIPs
• Inspector : Check/count defected parts & feedback to team leader/operators
• Team leader
- Evaluate team metrics results and communicate with operators