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How does SE calculate the from profile bend location ?

How does SE calculate the from profile bend location ?

How does SE calculate the from profile bend location ?

(OP)
Hi,

When creating a bend with the bend command, you draw a bend line, then with the 3rd step, you can choose the bend location.

I understand 3 out of the 5 choices : matl inside, matl outside and from profile with the arrow pointing towards the folded side (the bend starts at the line)

But I don't understand the other 2 choices with the arrows pointing both ways or away from the folded side... (see image). Depending on NF, R and THK I get results
that differ a bit or a lot from matl inside and matl outside.

Does anybody know what formula or geometric method SE uses to locate the bend with these two options?

Thanks.

Fred

RE: How does SE calculate the from profile bend location ?

When the arrows are pointing both ways is it not for when the profile is exactly in the middle of the bend? I mean as if the blade of the press would contact exactly there when you manufacture.

That what I'm thinking but I've never checked that.

Patrick

RE: How does SE calculate the from profile bend location ?

Try to unbend the bend feature, then you will get the answer - with both-way arrow the profile is at the middle of bend region, and away from the folded side the profile matchs the mold line between bend face and movable web face.

RE: How does SE calculate the from profile bend location ?

(OP)
Thank you both,

I tried sesm method of unbending and it's very clear now.

Fred

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