Creating a offset truncated 90 degree cone/ bend

[Anonymous]

Hi All,

I'm fairy new here, so this is my first post...

I tried looking everywhere for a solution to this, but I am still lost.

I am trying to create a "simple" 90 bend with two cylinders, but the bend is reducing in size towards the upper diameter, or outlet , if you will.

Now, the problem is that I can create the entire loft feature, but I can't get to unfold/ get a flat pattern, or even start by converting it to sheet metal ?

Can someone please advise on how to fix this, I am just looking to get the middle part as a manufacturable flat sheet metal part.

Thanks a lot, I really appreciate all the help!

Dewald.

[g-andresen]

Hi,

follow the timeline in the f3d file

unfold cone

günther

[davebYYPCU]

Are you sure it will work on a lofted body?  I don't think so, and likely the reason for the question.

I am brand new in Meshmixer, but I have followed earlier advice, I split the tunnel in half, saved as Stl,

then in Meshmixer, Edit > Unwrapped, then saved the flat pattern as Stl.

Load the Stl into Fusion, (no history)

Convert it to Brep.  Trace it with splines into a new sketch, mirror the plate in Sketch.

Save Sketch as dxf file.

Might help....

[Anonymous]

Hi Gunther,

Thanks for the reply,

Unfortunately, I'm still struggling. I've followed the timeline in the sample you sent me, I get the new drawing created,and the contour flange, but when I create the surface revolve, it doesn't want to select the edge of the flange created for the profile of the revolve, see attached.

Sorry, I really want to learn this.

[davebYYPCU]

Just tried to make Gunthers suggestion work, the lofted body is not selectable for the unfold routine.

As far as I know, it is restricted to cylindrical, conical and planar faces.

Might help....

[TheCADWhisperer]

Hint

[chrisplyler]

I believe there is a geometry issue that will prevent this being a sheetmetal body.

A conical shape, when cut off at the 45-deg angles on both ends, will leave elliptical ends to attach to. And a shape that would leave round ends to attach to would be elliptical in section instead of round. So, either the "cone" or the ends, depending on how you make this fitting, will not be recognized by Fusion as bends.

[TheCADWhisperer]

Ahhhhh, why did I not look at the other views?

This was so trivially easy in Autodesk Inventor Professional that I got mentally side-tracked.

Inventor - Lofted Flange

[Anonymous]

Thanks a mil, @TheCADWhisperer . I knew this was somehow possible, kudos to you sir.

Hopefully, I will someday be somewhat as good as you.

Thanks to everyone for their valuable input!

Cheers,

Dewald.

[TheCADWhisperer]

---

@Anonymous wrote:

Thanks a mil, @TheCADWhisperer . I knew this was somehow possible, kudos to you sir.

Hopefully, I will someday be somewhat as good as you.

---

Check it again - I was wrong.  😯

[chrisplyler · Accepted solution]

Oh it's certainly/easily possible, but not with Fusion 360. Fusion requires that sheet metal bends be either cylindrical or or conical. Your desired shape does not fit the requirements.

As @TheCADWhisperer  showed, it is an easy task in Autodesk Inventor. Fusion isn't going to do it.