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Rib
amir_livne
Member Posts: 82 EDU
Hi
I'm looking for a solution of creating a rib that will fit exactly the 2 edges (in black)
Thank you
Amir Livneh
Kinneret College
Israel
0
Comments
Split the faces of the sides of the cylinders using either mate connectors or planes, then loft the faces together:
https://cad.onshape.com/documents/1a78f28907f923d15d28e1fe/w/933e4b5325a4c29b8fa50a8e/e/fdd3596…
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Something like this?
https://cad.onshape.com/documents/c735f911656197548a135a03/w/f0b97f029af9835d24cd6326/e/532399be54d8e084b9d6a32a
Are you sure that you need to add that level of complexity to your design? After looking at both Michael's and Glen's models, (i.e. they do seem to meet your requirements ) - it seems that a simple rib with full rounded edges would be both strong enough, and look nice, while being easier to model and manufacture. Just a thought.
It is an interesting abstract modeling exercise though.
wouldn't this work? it's much simpler… creating a curved surface on such a technical detail seems overkill.
add a fillet perhaps…
https://cad.onshape.com/documents/4f0fa74d4ca7937627e262af/w/24f6fb13ad005564b17b6af7/e/3172a53927d31582c0cd238d?renderMode=0&uiState=671776ea5825d7318d6d3b50
This all really depends on the production method and the goals of the part. It also depends on what is modeled vs what is manufactured (e.g. ribs on injection molded parts will end up with ~0.05-0.1mm fillets unless there's venting from a parting line/insert/lifter). When I model for injection molding, there are details that I would leave out - the above mentioned tiny fillets - but others like draft, that I always model. In some industries leaving out draft and letting the tooler add it is considered standard practice, but for the stuff I work on it would be a disaster.
If that rib was cosmetic, then having it be lofted between those edges could be perfectly normal. If it's being modeled that way so it matches up with a traditional 2D part drawing (where there was no 3D CAD), then I also question it.
So I would ask @amir_livne what the goal of modeling this part is, and then we can be more thoughtful about the "right" answer.