Assembly Line Balancing: Workstations

[saDikus]

Hello, the 9.6 mins is Takt time. Line cycle time is 8 mins. Thanks for the detailed analysis. It helps.

[camgere]

Very clear explanation. One worker could do tasks A & D in 9 minutes (under 9.6 minutes). Cellular manufacturing often has a U shaped path to allow workers easy access to more than one station.

[carycountryman]

Remember the calculation on the minimum number of workstations is a theoretical minimum. To get the current process to 6 workstations as calculated, you would have to try a reduce the time associated with the tasks and re-arrange the process in order to maximize the cycle time in each workstation (no idle time).

[yasarusta]

Sir you are very nice teacher.And you are teaching with Excel.It is so impressive.I can comfortly understand without my native language is not English.Thanks a lot.

[carycountryman]

Given the present process and the amount of time for each task, you cannot get six workstations.  If you could reduce the amount of time necessary for the task, it may be possible to combine tasks and stay under the cycle time of 9.6 minutes.  For example, if you could reduce the time it takes to do task B from 7 minutes to 5 minutes, then tasks A & B could be combined into one workstation.

[janardansubedi]

Wow.It helped me out. Thanks a lot. Love from Nepal

[benardictokositany]

Suppose that an assembly line contains the following task times in seconds: 40, 30, 15, 25, 20, 18, and 15. The line runs for 7 ½ hours per day and demand for output is 750 units per day. The workstation cycle time required to produce 750 units per day is 36 seconds. The problem is that one task in an assembly line takes 40 seconds. Discuss possibilities on dealing with such a task

[euclides]

Hello thank you for this video. I have one quick question. Why would we want to divide our total task time by 8 * #of stations, instead of dividing the "total task time" by ("Cycle Time" * Number of stations)

[carycountryman]

Recognize that the minimum number of workstations is just theoretical (if we can take the total amount of time associated with each task and divide it up into equal chunks of time then it would be possible to achieve this always).  This is not always possible given the actual process and associated tasks.  You simply try to make it as efficient as possible given the times of each task and the relationship between the tasks.  You cannot exceed the cycle time.

[nurulatikahlokman]

Sir may i know why the answer in the book for idle time is equal to 15 minutes.not same as to what you explain in the video.

[ienasgafer]

hi, i thought that the # of stations you found was 6, shouldn't that match, if you have to draw your station to find your idle min ? and you should have total of 6 station circles ?

[andrekimble]

What if you have more workstations then needed?

[benchpresser]

How did you create the precedence diagram?