How to make capacity graph of a production line?

 

Making Capacity graph of a production line very easily.

 

To monitor the production, supervisor need to know the capacity of every operator of that line. Sometimes operator not giving target properly. Then work study officer / floor responsible IE has to show the capacity & help supervisor to get the pcs.

Now we will discuss about Capacity study:

Required tools:

• Stopwatch
• Study Sheet
• Pen/Pencil
• Clipboard

After arrange all those things, go to the line. Write down all the operation name on study sheet with operator’s name & ID by maintain sequence. Take 5 consecutive cycle time from each operator using stopwatch & write down this data to study sheet. By using calculator, take average cycle time & add allowance with this to get hourly capacity.

For example:

5 Cycle time: 50, 53,51,49,52

Average cycle time: 51

So SMV of that operator= 0.98 (With 15% allowance). It may vary.

Capacity his/her = (60/.98) = 61 pcs.

Take every operator capacity like this & record it.

Then make a capacity graph to see visually where to focus to develop.

 

Here you can see a demo chart from a sweater unit. Process of making chart are always same for other product also.

 If a line hourly target is 46 pcs then we have to see how many operations have below target line & how many operations have over achievement. Focused on both for maximum production.

 

Conclusion:

The main job in line after balancing is to eliminate or reduce WIP (work in process) at bottleneck operations. To do that you have to know which operations are a bottleneck in the line. Through capacity study and target setting, you will find existing bottlenecks in the line.

Read Also: What is line balancing? Objective of line balancing.