How does SE calculate the from profile bend location ? 1

[fredericmenage]

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

 

[PatCouture]

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

 

[sesm]

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.

 

[fredericmenage]

Thank you both,

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

Fred