o-Ring on curved surface

[Alexrose1942]

Hi 

im looking for some guidance on o-ring design for curved surfaces. 

the o-Ring is a shelf product (Internal diameter and thickness are known parameters) which i can model easily but i need to bend it and simulate the part running on a pipe. just not sure how to adapt it into a curved surface. (see image)

Thank you!

[IgorMir]

Hi Alex;

Would something as primitive as the attached IV2018 file do for you?

Cheers,

Igor.

[Alexrose1942]

Hi the part is similar to the final results. yes.

but now think about the part as something which is not curved. just an o-ring -Flat. is there kind of projection i can use that will assure that the part fit? (think about projecting 1 to 2)

[mcgyvr]

bend part function will allow you to "bend" an oring to a specific single direction radius..

No "easy button" though that will just make a part deform to a more complex or any shape during assembly.. 

You need to either use an ipart to define its multiple shapes or derived parts or whatever..

[blandb · Accepted solution]

You can create a sketch that will be the OD/ID/CL of what you decide to sketch. 3D Sketch > Project Curve to Surface > Wrap to Face. Then Create a cross section of the o-ring and sweep cut in the profile.

New solid of the o-ring:

[blandb]

You can then derive the sketches of the cut into a new part and create the bend O-ring as an independent part at that point, or keep the multi-body option. Up to you.

[johnsonshiue]

Hi Brad,

Using 3D Sketch -> Intersect Curve is a great idea. A slightly more precise method is probably using Wrap option, which will preserve the length of the ring.

Many thanks!

[blandb]

That is what I was referring to. My fingers strayed from my brain....that is what I did in the picture. My apologies. Wrap to face.....

[blandb]

Wait, I did state wrap to face and not intersection curve. Am I missing something?

[johnsonshiue]

Hi Brad,

Sorry, it was my bad. I looked at the picture without reading the  description carefully. I thought it was Intersection Curve.

Many thanks!

[Alexrose1942]

@blandb this is what i was looking for. Thank you very much!

[Anonymous]

Hey, 

I actually work on the same subject to get a static sealing between a pipe (DN100) and a tangential piece attached in the pipe. My problem is : the rugosity of a pipe is very bad, and, unfortunately, a torique sealing needs to get a great rugosity to avoid a leak. Did you find a solution ?

[memo2022]

is not clear is there a video explaining in detail on fusion 360