Healing an import from IGES
Healing an import from IGES
(OP)
I have an IGES file consisting of surfaces. After import, I sew those surfaces into a solid. Since the surfaces don't quite match up, problems develop later on. I want to manually/automatically edit those surfaces after import and before the sew but I can't find any way to do it.
The surfaces come in as Sheet Bodies and the sub-type on the Part Navigator classifies them as UNPARAMETERIZED_FEATUREs.
I've tried everything I know and couldn't find anything in the help files either. Increasing the modeling tolerance doesn't help. My natural inclination is to try to edit these as NURBS surfaces, but perhaps they aren't NURBS at all?
The surfaces come in as Sheet Bodies and the sub-type on the Part Navigator classifies them as UNPARAMETERIZED_FEATUREs.
I've tried everything I know and couldn't find anything in the help files either. Increasing the modeling tolerance doesn't help. My natural inclination is to try to edit these as NURBS surfaces, but perhaps they aren't NURBS at all?





RE: Healing an import from IGES
Data translation is a complex subject. Is the geometrie in the source system a solid then move to step.-> Better results. What is the source cad system then I can give some how to's. Very complex faces? Analyse the geometrie after sew with analyse geometrie.
uw
RE: Healing an import from IGES
Sounds more like new to modeling, not just UG ;)
robtheg,
I believe you need to give a detailed description to the problems you're having 'later on' for anyone to accurately diagnose what the real problem might be. Are you having problems sewing? Are there large gaps between the surfaces? Have you tried untrimming and re-trimming the surfaces to the proper boundaries? Are you having continuity issues? Basically, your question is a bit vague & is kinda like going to the doctor and just saying "I don't feel good".
UNPARAMETERIZED FEATURE means there is NO HISTORY that you can use to modify it, like curves or sketches. For example, if you create a Through Curve Mesh feature, then copy it to another layer, the copy is unparameterized or dumb. However, if you have the correct licensing, you can use UG's wonderful editing tools to manipulate the surface in many different ways, or, with the correct licensing, you can utilize Shape Studio to manipulate the surfaces with X-Form, Deform, Translate, Refit, Rebuild & Match Edge.
Tim Flater
Senior Designer
Enkei America, Inc.
www.enkei.com
RE: Healing an import from IGES
Take care....
RE: Healing an import from IGES
The surfaces from the IGES file sew into a solid nicely, so I haven't needed to play with the tolerances yet.
I'm trying to make a simple fixture for the part. So I'm creating a block that encloses the part, then I subtract the part from the block. That all works fine.
Now, to create a proper fixture I then try to extrude the lower sufaces of the part upward through the material in a subtraction operation. This is where things start going wrong. I get an error when I select a certain face saying "Selected objects will result in a self intersection section". Playing with the tolerances in "modeling preferences" did not help.
The surfaces coming from the IGES import have gaps between them. I think this is the reason for the problem. NURBS modeling is not a problem for me but if I need the shape studio lisence then I'm hosed since my company doesn't have that at this time.
RE: Healing an import from IGES
RE: Healing an import from IGES
Assuming that your "nest" block is bigger than the part, I would recommend doing it like this...take that IGES data, seperate it into the upper and lower halves, and then create runout surfaces around it. Then sew the half together that you need along with the runout surfaces you just created and use that sewn surface as a trim sheet for the top of your block.
There are actually dozens of different ways to do this but without seeing the part this is all I can recommend. Depending on how big of an area of the part you're nesting there are other ways like just sewing the one side of the part together and then appying thickness to that surface followed by trims to define the sides of the block. But again..without seeing exactly what you've got to work with it's hard to say what way to go.
Take care...