I'm sure this has been discussed before but I can't find it.
What is the reason this finger joint fails?
Is it because the edge has been interupted by the fingers/cut?
Here is an example with a solution even if it’s not perfect from a geometric point of view.
There will be some minimal flat areas remaining.
Yeah its a limitation - you cant trim away the edge that is involved in the bend.
There is an example of another difficult sheetmetal bend in Matt's blog 'Flatten a sticker' http://www.dezignstuff.com/blog/?p=2419
You will see in the comments I suggest an enhancement for a phantom edge...still waiting
If you are allowing a small planar face which is the result of the sketched bend a more direct possibility exists
with the Sheetmetal functionality.
Model a cylinder with a slit and no messing with knowing the flat pattern length . Solidworks does it.
Also your problem could be reduced to a nothing by employing the approach already used in the rolling of
the weldment profile.
Here of course the blank is precalculated and then Flexed into shape.
Please have a look at the attached models which could also help achieve what you want to more directly.
did you look at the example?
i used the base-flange cylinder + slit method.
"rolling of the weldment profile"
Sorry I was a bit cryptic since I wanted to quickly shoot out that reply.
The file with a direct approach ie modelling what you want and then
However as indicated in my post it has the flat face. Only a teeny weeny itsy bitsy one.
The trick is to model the line tangential to the arc. You can then flatten it without any problem.
No need to mess with sketched bend since there is to much to work out manually.
It in any case produces an almost identical result is more parametric and there's nothing to work out manually.
Would appreciate your feedback
The cleanest and clearly the best method is the FLEX into shape by Bending.
Check out the file attached. It does it clean as a whistle.
There are two configurations. The flattened one and the rolled one.
When you make a change to the diameter of the cylinder just update the flex feature manually.
The radius value has to be updated to half the diameter of the cylinder.
To use Flex bend for this was great. This also allows you to bend more then 360 degrees.
I have always thought of Flex as an inexact method, but maybe I have to change my mind.
I don't have SW 2010, so I can't open your file.
Here is my Flex Bend test part done with SW 2009.
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