Calculation of a press for a 5mm stainless steel sheet

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Hello everyone, 

I am looking to make a press for a 5mm stainless steel sheet, the inner radii are medium and large sizes. ( R int 445mm Top and bottom part / R Int 6192mm right part and R Int 14730mm for the left part )

Knowing that these parts will be made in rolling, I would like to know what the order of the K factor is for example or if anyone would have an idea (I have always used a K factor of 0.5) did it just leave you for large radii?   

You will find the assembly I want to make in the attachments. 

Looking forward to reading you. 

Jerome.


face_assembly.igs
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It's quite an empirical thing. It depends a lot on your machines.

 

For example, for a sheet of 6 we put a K factor of 0.235 and for a sheet of 2 a K factor of 0.4

 

If it's done internally, they don't have a table to give you? And if it's done externally, they should be able to provide you with this information?

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Subject already covered here:

 

http://www.lynkoa.com/forum/3d/perte-au-plie-table-de-pliage

 

=)

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[Answer unrelated to the question] 

Just for the record, I used this site during my studies in boilermaking: http://tspeed.free.fr/formpliage.htm

 

I don't really know if they're talking about the K factor but just in case.... :)

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Original boilermaker I use a K factor of 0.5 for thicknesses ≤ 3mm and a K factor of 0.5 for thickness > to 3mm you can.

After the settings of @coin37coin must give a result very close to mine (1 or 2 mm on a developed does not give a big difference on the finished coin.

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+1 Sbadenis

Especially since normally, it also depends on the direction of cutting of the sheet metal, the heat, etc etc. Too many factors to have a real factor that works.

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+1 @coin37coin

Many factors that make the develloper can be different but with the values given previously I have never had any problems the part is good (within the acceptable tolerance +/-1mm  about for parts with a diameter of 1000 and less for small parts)

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@jeromejesson: So, suddenly, suddenly? What do you think of the community's responses?

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