Tolerant curves issue 1

[animuL67]

Hello, I am running into an issue with tolerant curves that is very time consuming to get around. I get the error on the edge of a complex multi-face surface that has been trimmed by another complex surface. The edge looks fine but if I go to select it the segments of the edge do not connect. Does anyone know how to avoid this problem? I can get around it after it happens but it can be very time consuming. I attached a pic showing what happens. The multifaceted darker surface appears to have a continuous edge but when selecting the edge it thinks its not continuous. I'm zoomed in so far the gap between them is probably .0001. BTW the dark surface edge highlighted is a trimmed edge and is not connected to the light green background. Thanks!

 

[animuL67]

BTW, this is in 7.5

 

[jerry1423]

Try to follow what I posted a little while back.

http://www.eng-tips.com/viewthread.cfm?qid=309453

If you have any questions then get back to me.
You can e-mail me at what my user name is here @yahoo.com

 

[animuL67]

Thanks, I'll give that a try. It looks like you are referring to an edge between two connected faces as opposed to an edge of a single face. I do not have that but I could always add a step to create an adjacent face and remove it afterwards. I have only ran in to this a few times with a native UG file but my tooling guy complains about it all the time - he pulls in a parasolid of my part to design the tool in solidworks. He created a tool then i pulled it back in to UG and it was plagued with this error far worse than I have ever seen. It made me think something was happening in translation.

 

[JohnRBaker]

With you moving files back and forth anyway, this implies that you're not too concerned about keeping the parametrics. If so, have you looked at using...

File -> Export -> Heal Geometry...

...to 'repair' the model? Note that this function does not actually modify you part model, but rather it creates a copy which has been 'tuned-up' a bit, fixing these topological anomalies. Anyway, give it a shot and see if the results are closer to what you're expecting.

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

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[animuL67]

I do eventually need to get the tooling guy to learn UG to keep parameters and make tool updates easier but for now I might give that a try as well, thanks.

 

[animuL67]

jerry, your method worked great to regain a nice edge. Previously I would have edited the curve length of the bad edges by shortening it a little, say .01. Then I would trim and extend the edge .01 or so and bridge the curves with the bridge constrained to the faces. Then trim the sheet to the curves. This would get me a contiguous edge but it would be segmented. Your method gets me an unsegmented edge so props to you! Its just too bad still that this happens in the first place.