IGES surface doesn't work
 

Hi everyone,

I want to import a IGES complex curved surface to CFX and I have created the IGES surface in CADKEY V20.

When I import the IGES file, a warning message appears:

Build error for NURBS surface #1

and no surface is created.......

I have no problem importing this IGES file (about 50MB) to the other CAD software like Mechanical desktop...... Thus, this must not be the problem of the file itself. Is that a limitation of CFX5.5.1?

There's no option that I can choose other than IGES format at the moment. Seems like we have to pay extra for the other options. Anyone has the similar problem before?

Thanks for any advice here.

Re: IGES surface doesn't work
 

Please check the unite option.

Re: IGES surface doesn't work
 

can you please say a bit more? What unite option you are referring to?

Thanks for advice anyway.

Re: IGES surface doesn't work
 

Hi, Pete,

1) go to file - new, selecting the unite (mm, ft or so on) same IGES file's unite.

2) import the IGES file.

Pete, you can try this.

Min

Re: IGES surface doesn't work
 

Hi Pete,

Importing geometry using IGES is always hit and miss. It is common to get surfaces disappearing, surfaces loosing their trimming or just simply going crazy (eg going all wobbly). This is not a problem with CFX-Build, it is just a fact of life with IGES! There is no such thing as a "correct" IGES file, so just because it imported OK into another program does not mean the IGES file is "OK". The IGES code is written and interpreted differently by all the different solid modelling packages.

Even though the CAD import options cost money they are far more reliable and accurate. If you can afford them they are the only way to go.

Glenn

Re: IGES surface doesn't work
 

Thanks Glenn....Seems like CAD import option is the only way to solve my problem....