Complex wrap around revolution surface

[PrintScaffold]

Greetings everybody!

The file is attached to the post. Is it possible to accomplish this task in NX8.5? What I need to do is to 'wrap' the curve modelled in the second sketch around the revolution surface. This is a real life task, it's actually represents trajectory of a windind rod bend around the parts in an assembly.

Should it been a simple cone, there would not be a problem, because simple Wrap would do. But the problem is that the target surface is complex.

My wild guess is that Law Curve could help here. But I'm not that proficient with this tool to be sure. Any help is appreciated.

Industry creates wealth!

 

[JohnRBaker]

OK, attached is a model that while the result is no exact I think it may be close enough for what you're looking for.

The approach I took (when I've encountered similar situations in the past, I've used this approach with some success) was to approximate your surface model with something that I COULD wrap a curve around, in this case a Cone, and since your model was already mostly a cone, I used that face and just extended it enough to cover the entire model. I then had to do some work to get a curve representing your sketch tangent to this new face so that I could perform the Wrap operation, which I then simply projected along the face normals of your surface model, which resulted in the Green curve that you see. Now, as I said, I know it's not perfect, but it might just be close enough.

Anyway, take a look at the model and see what you think. You can follow my logic by looking that objects that I created and I think you will see how I approached this and that it might just be good enough

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
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To an Engineer, the glass is twice as big as it needs to be.

 

[PrintScaffold]

Thank you, John!

I think it's cunning, but the result is not exact enough at the wider side of the surface.
Is there any other methods? Again, can Law Curve be utilized here? Some other ideas?

Industry creates wealth!

 

[JohnRBaker]

I checked the length of the two curves, your Blue 'sketch' and my Green 'Wrap', and there is a difference of less than 6mm, or 0.86%. Now that's pretty close. And as for the shape at the end look at my 'wrapped curve' (before I projected it). Remember this is being wrapped onto a shape which is basically that same as your model and look at how the end hooks around. That is what would happen in the real word once you look at all thre curve at once, your sketch, my wrapped and my projected curve.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[PrintScaffold]

I will test this approach on the real models and see how it works. I understand that wrapping shapes around complex surfaces is a difficult mathematical problem and there's no universal solution present.

Industry creates wealth!