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Pruuu
Hello,
I've just started my adventure with Lean. At this moment I am on my student internship in company which produces shock absorbs. My main duty is to conduct VSM of one family of the product, and I should admit I've got stuck and nobody in company is willing to help me. I will present my situation: I know the process, described the flow, but problem showed when i was gathering process indicators and inventory/stock and buffer.
The company has two production areas:
1 - small unit where are produced rods as main component of absorbs
2 - big unit - assembly lines - where the rods from small unit is transported and converted with other purchased components in final product.
The first problem is concerning assembly lines, main product contains the 1 rod, and 4 other components. I've got indicators of 4 purchased things like c/t, c/o uptime etc., but I do not any of whole Rods area, it means indicators of each process are available and I have them, but I am not sure how to count c/t of the whole units.
In the rod area we have some processes like:
- cutting c/t = 6s
- lathing c/t = 13,36 s
- grinding c/t = 5 s
- plating c/t = 3,66 s
- polishing: 1st machine c/t=7,51 s, 2nd machine = 5,40 s
3x shifts, 1 operator per shift
In my opinion c/t of Rod area should be ~34 sec, as adding each process c/t.? but I am not sure. If you have any ideas, please write how to count c/t of Rods area.
2) Second problem is related with inventories, stocks, Vips. In your opinion, is it possible to create a good VSM if I use the data about inventory purchased and in progress from SAP? It is really hard to find out how many components are left between workstations, because company produces a lot of different final products, people from the production have a problem to say how many they have.
Thanks for any answer, sorry for mistakes in the post. English isn't my national language.
I've just started my adventure with Lean. At this moment I am on my student internship in company which produces shock absorbs. My main duty is to conduct VSM of one family of the product, and I should admit I've got stuck and nobody in company is willing to help me. I will present my situation: I know the process, described the flow, but problem showed when i was gathering process indicators and inventory/stock and buffer.
The company has two production areas:
1 - small unit where are produced rods as main component of absorbs
2 - big unit - assembly lines - where the rods from small unit is transported and converted with other purchased components in final product.
The first problem is concerning assembly lines, main product contains the 1 rod, and 4 other components. I've got indicators of 4 purchased things like c/t, c/o uptime etc., but I do not any of whole Rods area, it means indicators of each process are available and I have them, but I am not sure how to count c/t of the whole units.
In the rod area we have some processes like:
- cutting c/t = 6s
- lathing c/t = 13,36 s
- grinding c/t = 5 s
- plating c/t = 3,66 s
- polishing: 1st machine c/t=7,51 s, 2nd machine = 5,40 s
3x shifts, 1 operator per shift
In my opinion c/t of Rod area should be ~34 sec, as adding each process c/t.? but I am not sure. If you have any ideas, please write how to count c/t of Rods area.
2) Second problem is related with inventories, stocks, Vips. In your opinion, is it possible to create a good VSM if I use the data about inventory purchased and in progress from SAP? It is really hard to find out how many components are left between workstations, because company produces a lot of different final products, people from the production have a problem to say how many they have.
Thanks for any answer, sorry for mistakes in the post. English isn't my national language.
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