3D DXF to NX Solid

[dkred]

Hi. newbie question!

I have a file: 3D DXF. only lines (in 3D)

I need a Solid from this file in a NX part.

 

[KhimaniMohiki]

Tricky, I think you'll have to create surfaces across the curves (through curves mesh or N-sided surface) then sew into a solid, although this is easier said than done depending on your geometry.

Khimani Mohiki
Design Engineer - Aston Martin
NX8.5

 

[PDW]

Are the lines all lines, or do you have curves and splines as well?

If you only have lines you can create, for each "plane" a Bounded Surface.
And create with this a closed Shell to Sew them at the end.

Maybe a (partial)picture could help to understand your input .

 

[ewh]

There are many ways to create your solid, depending on the curve geometry that you have to work with. You will have to create the solid yourself though... it will not be automatic.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

[dkred]

Link

...I will use this kind of file (3d dxf).

 

[jerry1423]

In your situation I would use the existing curves as a template to create the solid model from stratch, but as mentioned, there is no way to do it automatically.

 

[Toost]

There is a very ( very-very-very ) old feature called Sheets from curves. It will create multiple sheets from curves fully automatically in one step.
You will have to read the manual on how it works, there is some logic to it. - as I remember it, one can in some cases create helper lines such that NX "understands" the intent.
Use the command finder , search for "sheet from curves".
The sheets will not be parametric.


Regards,
Tomas

 

[ewh]

... and, without more work, you still don't have your solid.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

 

[Toost]

Here you have something to test it on, you misbelievers
Start the Sheets from curves, select everything, ok.
NX will create 13 out of 14 sheets in one go, then one can select the 4 lines which NX didn't like in the first step and have the same feature create the missing sheet. Sewing is thereafter a snap. As noted earlier, the feature is at least 20 years old, submitting an IR to fix any missing functionality might be wasted time.
File in 7.5 format.


Regards,
Tomas

 

[JohnRBaker]

Actually the 'Sheets-from-curves' function dates back to a project implemented in Unigraphics V6.0, released 25+ years ago. It was the underlying technology for an early 'Hidden-Line-Removal' function which would work on 3D Wireframe models. What happened was that in the background, after all the curves were selected, we would attempt to create surfaces (this was limited to simple bounded planes, cylindrical and when conditions were just right, conical surfaces as well) from the curves and then apply a view-dependent hidden line creation function using the surfaces. Now if the model already included surfaces it would use them as well. With the right model this would work quite well, as you saw with the example provided by Toost. While I'm not sure how practical this was in real-world situations, it did make for some great looking demos (remember, this predated integrated Solid Modeling). Of course, after the introduction of integrated Solid Modeling and after we moved to UG V10.0 where all Modeling seats included basic solid modeling with its 'free' HLR capabilities, we dropped the curve-based HLR function but did retain the 'auto-surfacing' portion of it since that still could be used to 'add value' in certain limited situations, including converting 3D wireframe models from either legacy UG files or from models translated from systems that didn't support surface or solid data.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
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