Import-Export IGS files- Looses surfaces.

[kiwiavi]

I thought it an error in the files I was receiving but now I don't think so. This started when I got some IGS files from Solidworks.

If I save a drawing to IGS in Alibre and then reopen the new IGS file, it converts it into multiple parts. A simple disk now becomes 50-60 segments. Is there something I'm doing wrong.

It does not seem to happen with STP files.

Thanks Wallace

 

[Anonymous]

Try checking stitch to solid when importing. Also if you post the file we can better assist you.

Thanks
Mark
Alibre Support Manager

 

[kiwiavi]

Thanks, here are the files.

The Step file is much better but the hole is still split into 2 halves.

Thanks Wallace

 

[Ralf]

I can not find a problem.

IGES - Import -> Save as Alibre part.
Please take a look.

 

[kiwiavi]

Thanks for the update.

It opens it ok but, how many edges do you have. I have 92 edges, 6 faces and 88 Vertex's

I have Alibre 11.2 which will not let me open your file.
A wok colleague has the latest version and has the same results as me.

Cheers Wallace

 

[Ralf]

Maybe I do not understand your topic: :?

Import-Export IGS files- Looses surfaces

As shown above in my example, all surfaces were imported correctly and properly displayed.
It is also possible to insert an axis.

 

[kiwiavi]

I cannot select the hole. It only selects a part as shown.

I use Alibre for getting measurements from customer drawings.
Look how many edges this unit has. It make selecting the correct point quite difficult for measuring.

 

[indesign]

The hole is selected. The trouble is that ths is an imported part and not native.

Geometry is devided into sections like the bore. If the hole is a true radius you can get measurements on the bore. It will return the radius of the section.

 

[kiwiavi]

Thanks for the reply. So the question is - What is the solid model equivalent of a DXF file?
Or what should I request my customers to save their files as so that I can read them correctly in Alibre?

Thanks Wallace

 

[kiwiavi]

Can someone verify this.

Make a bush with a hole in Alibre. Save it as an STEP file in Alibre and then reopen it and see if it brings it back exactly as you designed it. I can't do that. It still breaks some surfaces. It looks like the STEP import facility looses some info.

 

[indesign]

There is no perfect solution. Try this. Create a part in Alibre. Export to several formats (iges, stp, etc.). Now import those parts again. They will act simular to what you are currently seeing.

These are simply a generic solid model and each software has their quirks in both export and import of these formats. The part is imported ocrrectly and each section of a true radius can be measured. The trouble will be as you already see. Geometry will not be the same as a native Alibre file and will behave differently. The hole can be measured but maybe as a radius instead of a diameter. Each half of the hole should show the radius true size and location.

The radius can be measured in both size and location.

 

[Ralf]

 

[DavidJ]

If worried about the splitting of holes into 2 or 4 internal faces, you can use the 'remove face' tool to get back to a single face. It works fine on holes, but may possibly not alwys work perfectly on more complex geometry.