SHEET METAL CORNER

chris_pettit573

Hi All,

I'm trying to model the grey shape below in without the large gaps at the corners.

First image shows what happens when I use a flange feature.

Another method was converting from a solid to sheetmetal part. This works on the orange test part well.
However, in the second image you can see it does not work for the grey part because the top flanges are all on the same face and the flanges segments can't be individually selected.

Thoughts?
 

dirk_van_der_vaart

try this 
https://cad.onshape.com/help/Content/sheetmetalbendrelief.htm?Highlight=corner relief

David_YL_Nguyen

Hey @chris_pettit573,

Could you share your document? Would be easier to look directly at the parts/features. Thanks

John_vd_Werff

Interesting problem. The closed corner relief only works on corners with 2 bends and not with 3 bends.
Models below have identical relief settings. Does anybody know if a 3 bend closed corner (or at least almost closed) can be done in Onshape sheet metal model?

bryan_lagrange

This was about the best I could get it.

https://cad.onshape.com/documents/0f603abd16fe4ed08156ed9a/w/5471f70069976f68b0458af0/e/02527e538e3928916ecb4161

eric_pesty

@bryan_lagrange
That's a good trick putting the large radius in the base part instead of as a "bend"! I'll try to remember that!

chris_pettit573

Yeah Bryan, that's what I'm after except the top flanges need to be on the same plane.

Part for reference

https://cad.onshape.com/documents/2aa7f129ee13a5c9a3816919/w/ebd0d2e6f4b975a2461c4a8f/e/51491da9d8a7a9f5e85a364e?renderMode=0&uiState=645f6e93fa64d63dc0251202

bryan_lagrange

@chris_pettit573 I changed the profile to a 90 degree flat plane. I then added a split face before the sheet metal conversion. See if this is what you are looking to achieve.

https://cad.onshape.com/documents/0f603abd16fe4ed08156ed9a/w/5471f70069976f68b0458af0/e/02527e538e3928916ecb4161

chris_pettit573

Brilliant, thanks Bryan.
Really appreciate the help.

For those trying to replicate; note that changing the thickness direction causes the model to fail.