An assembly line has been designed to make battery-powered beverage mixers. Task

Question

An assembly line has been designed to make battery-powered beverage mixers. Task details are shown in the table below:

Station

Task Assigned

Task Time (minutes)

1

1

3.0

2

3; 4

1.5; 2.0

3

2; 5; 6

1.5; 1.5; 1.0

4

7

3.0

5

8

2.5

6

9; 10; 11

2.0; 1.0; 1.0

a.                  What is the assigned cycle time (in minutes)?

b.                  What is the maximum output rate of this line in mixers per hour?

c.                  What is the total idle time per cycle?

d.                  What is the assembly line's efficiency?

Station

Task Assigned

Task Time (minutes)

1

1

3.0

2

3; 4

1.5; 2.0

3

2; 5; 6

1.5; 1.5; 1.0

4

7

3.0

5

8

2.5

6

9; 10; 11

2.0; 1.0; 1.0

Explanation / Answer

a. Cycle time is 4 minutes which is governed by stations 3 and 4.

b. Maximum output is 60/4 =15 units per hour.

c. idle time per cycle = 1.0+0.5+0.0+1+1.5+0 = 4 minutes

d. efficiency is 20.0/24.0 = 83.3%

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