Imported geometry problems

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Permalink Reply by Smoky Rick on October 10, 2008 at 10:23am

Perhaps you could give an example. I have imported many things off vendors' web sites and most all of them have come in properly. I did have one that came in with a problem, but only that one.

Smoky Rick

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Permalink Reply by Arash on October 10, 2008 at 10:25pm

well, perhaps thats because you are such a lucky guy rick, i suggest you buying lottery tickets. you'll win i promise!
do you import parts with freeform geometries or most of your parts are prismatic? it also depends on what format you receive your parts. if you work in solidworks and receive them in parasolid's x_t,x_b formats, chances are high that you import them without no or little problem. but if the part has complex geometry and comes in iges for example, you'll gonna have problems unless you are somky ricky!

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Permalink Reply by Brian on August 6, 2009 at 6:11am

Arash,

The answer to your question is difficult but here is a 10,000 ft view point. I deal with importing Pro/E, Catia, IDEAS, UGS etc, most of which i tend to use STEP to create, but sometimes STEP does not work so I use IGES or VDA etc until I get the best that comes out of the initial software. Comes right down to poor building methodologies many times, different tolerances within each program on the export, and many times the exported file had been done with just the default options.

BTW, all standard formats are not the same :0....I.E. IGES has many flavors and they are not all set the same in all CAD packages, even STEP has some of these issues.

The answer to this question can go on and on and on and on. Care needs to be taken when exporting files out of a CAD system, read back into that CAD system to check it before sending it out and making changes if necessary. Some CAD systems work better than others more consistently but they all falter at times.

So, no real answer, just very short and real feedback.

Brian

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Permalink Reply by Deepak Gupta on August 6, 2009 at 8:33am

Brian,

Thanks for these views.

To add what Brian has said, I will say over a period of time you will gain experience and then you will be in position where you can judge that which format suits which cad/cam/cae package.

Deepak

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