Solidworks sheet metal development quotation

2D plans Layout
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Side surprise on Solidworks drawing A piece of simple sheet metal, stainless steel plate of 1.5mm 10 mm wide, 1 positive ply 45 °, small offset of 3 mm, 1 negative ply of 45 ° to return // to the first face, Workpiece length with folds: 50 mm Unfolded Workpiece Length, 49.89 oops ??? Recorded bend loss 2.8 /2 = 1.4 mm Where is the error??? Thank you in advance for your advice, my laser speed for the moment is not good. Kind regards YB
tirette__-_feuille1.pdf
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Hello

 

I'm more used to working with the K factor...

 

In this case, I would have set the bend radius to 1.6 like you, and a K factor to 0.33.

 

And I find a 50.9mm unfolded

 

 

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Can you send us your part?

Thank you.

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I have 50.88 lol which says better, but I have a thickness of 5.24 so it's in the folds


zipper.sldprt
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@SEPM. Gerald:

Why not use the "Offset" feature? As an attachment.

This allows a perfect dimension of 50mm once folded, to have only one function where the offset value is directly parameterized.

So with the K factor of 0.33 by default I find 50.7mm.

 


zipper.sldprt
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@remrem

Oops it's the icon above. But you can also do the side folds at the first round and do the second hole and rounded to the right side after the folds but I don't think it's done like this in sheet metal. but the time lag is super good lol

On the other hand I noticed an angle on your first unfolded. Is this normal?

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Thank you for your answers I started again quickly with another part, same problem I don't understand anything Here is the part and the drawing I'm more of a mechanic than a sheet metal worker, where is the mistake?? thank you in advance
piece4_j2m.slddrw
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At the same time, the ribs are taken in the middle of the bending radius, it's not tiptop.

 

In general, to dimension my sheet metal parts, I draw the point of intersection, it's much more precise. (see Image)

 

If I follow the odds at best, I have 50.85.


point.png
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We need the room with the mep.

 

Make a composition to take away and send it ;)

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Carries a folder in rar or zip

PS I'm an electronics technician at the base....

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And me cabinetmaker ^^ Lol

 

 

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My 10 cents:

I modeled the part in 1 sketch.

With the default settings, I find 51.28 developed


lynkoa_depliage.pdf
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ok to have developed it this way, but I prefer to work with configs, so my drawings can be used both for the bender, the assembler and the laser cutter
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I close the file, here is what I think I understood in fact when you make 1 fold, whether it's a coeff K or a loss at the crease The result is correct and respects the value of the entries on the other hand when you make 2 folds, if they are U-shaped, the losses at the fold and coeff K give a correct result but if we make a Z and moreover with an angle different from 90°, the calculation on the basis of the coeff K is correct, on the other hand if we use the loss at the fold, the calculation is wrong because we have 1 positive PAP and 1 negative PAP Thank you all for your enlightenment YB