I opened up a file with surfaces and I need to extend the edges so I can use the surface to cut a solid. I'm assuming the edges have to be perfectly aligned so I can creat some kind of border around the surface. From there I need to extend the edges of the surface past the solid so it will cut. I've attached a power point to illustrate what I'm trying to do. I was able to do it in Catia so I put some pictures of what I did.
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Aligning edges of surfaces
- Thread starter Jashe
- Start date
Since your initial sheets have no parameters, try running "heal geometry" to help clean up the mismatch. You can try sewing the sheets together, there is a tolerance within the sew operation that you can adjust. Don't open up the tolerance too much though, or there may be other problems later. After that you can extend the surfaces with extension, law extension, enlarge, or possibly other commands and trim the sphere. Alternately, you might try making the sphere a little smaller until the surface extends past it then offset the surface of the sphere back out to where you want it.
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- Thread starter
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Are you familiar with the "Replace Edge" command?
Edit - Surface - Boundary
First on a separate layer I'd extract a copy of each surface, then turn off the original surface layer.
Next I'd create another sphere larger than any of the surfaces to be extended.
Edit - Surface - Boundary
Select the first individual surface to extend, and select Replace Edge, at the prompt select the sphere face, then I believe click ok twice. If it's going to work you'll know at this point, because it should have extended the surface and be asking which portion you want to keep. Cursor select the portion to keep and click apply.
I hope I explained that complete enough you can fill in any missed selections.
Edit - Surface - Boundary
First on a separate layer I'd extract a copy of each surface, then turn off the original surface layer.
Next I'd create another sphere larger than any of the surfaces to be extended.
Edit - Surface - Boundary
Select the first individual surface to extend, and select Replace Edge, at the prompt select the sphere face, then I believe click ok twice. If it's going to work you'll know at this point, because it should have extended the surface and be asking which portion you want to keep. Cursor select the portion to keep and click apply.
I hope I explained that complete enough you can fill in any missed selections.
All of the above advice is sound, however, I used Edit -> Surface -> Boundary to untrim the sheets back to their original size. I then needed to extend 1 edge of each surface outside of the sphere, so I used Enlarge to extend the edges that weren't fully outside of the sphere (same edges you extended in CATIA). Once that was done, I was able to Sew the surfaces into a single sheet body with a Sew tolerance of 0.01mm followed by Trim Body.
I did notice that the 4 surfaces are not tangent to each other along the shortest of the 4 adjacent edges - you might be able to use Change Edge to get these to shape up a bit, but you may have to either rebuild them and make them tangent, or use heal, or use Match Edge (if you have the license for Shape Studio).
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
I did notice that the 4 surfaces are not tangent to each other along the shortest of the 4 adjacent edges - you might be able to use Change Edge to get these to shape up a bit, but you may have to either rebuild them and make them tangent, or use heal, or use Match Edge (if you have the license for Shape Studio).
Tim Flater
NX Designer
NX 8.0.3.4
Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB
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