IGES files come out "distorted" on Lemoine CNC software

[Anonymous]

Every time I export a file to IGES for CNC machining, it comes out "distorted" and unusable on Lemoine. So what I'm having to do is open that IGES file in Solidworks and exporting again to IGES to get it to show up as a usable file on Lemoine. But this takes extra steps and I would much rather export everything at once using Task scheduler. I have tried every combination of settings when exporting to IGES including matching the settings to the ones on Solidworks and nothing worked. When I export as wireframe, it's not distorted but it's unusable for the CNC machinist for some reason. Does anyone else have this problem? Please let me know of any ideas to fix this. See attached pics of the part distorted on Lemoine and the actual part on Inventor.

Thanks.

kelly.young has embedded your images for clarity.

[Mark.Lancaster]

@Anonymous

Welcome to the Autodesk User's Community..

Inventor version?  Can you share the part so others can review it for modeling technique.

[mcgyvr]

Can you attach the ipt file?

Have you tried working with STEP (STP) files instead?

In general I have found them to work better than IGES.. I stopped using IGES a long time ago..

[Anonymous]

Here is the .ipt. This is true for any of the files. I use 2014 Inventor. Unfortunately, the machinist doesn't know how to use STEP files.

[Mark.Lancaster]

@Anonymous

No .ipt is attached..  Did you zip it and attach here..  The new system/interface is having issues with Inventor files.  So the part file has to be zipped up and then attached here.

[Anonymous]

Here is .ipt file. But this happens with any of the files. It's 2014 Inventor.

[Mark.Lancaster]

@Anonymous

Where's the file?  Again its missing.   Are you using your email system to reply with an attachment.  Please don't do that..  Follow my earlier instructions.

[Anonymous]

I see... here's one more try with the zipped file.

[Mark.Lancaster]

@Anonymous

Are you talking about this face? 

If so its an angle of 85 degrees.  Also what is the sculpt feature in there for?

[Anonymous]

A part sits on that face. It's just how the designer made that part. But I'm talking about the squares on the sides of the part. For some reason things like that are being generated when the files are exported to IGES and opened on Lemoine.

[TheCADWhisperer]

Can you attach the IGES file from your version of Inventor?

Edit:  Also attach the IGES from SolidWorks.

[Mark.Lancaster]

@Anonymous

Sorry..  I guess I consider distorted as being twisted and out of shape so I thought that's what was out of shape with that given face... 

I'm wondering the sculpt function is causing it and the CNC software doesn't know how to handle it..   For a test copy that to another file and delete the sculpting function and try again.

[Anonymous]

Yes, here are both IGES files.

[TheCADWhisperer]

I found a difference between the two files:

The Inventor IGES file that you attached is a Solid.

The SolidWorks IGES file that you attached is Surfaces.

In Inventor - change your IGES output Options to Surfaces and check that file in the CAM software.

Options as Surfaces

[Anonymous]

I've already tried that and many other combinations of those settings. But thanks.

[johnsonshiue]

Hi Ronald,

Although I don't have a proof, I think this is probably related to the ability of reading IGES solid at Lemoine. Inventor is one of the few CAD systems supporting importing and exporting IGES solid. Lemoine may not be able to handle IGES solid properly.

You mentioned that surface export also causes a problem. I would like to see a proof. Could you export the Inventor part as IGES surface and attach it here?

Many thanks!

[WHolzwarth]

Here are my observations:

- iProperties show, that file was created with Inventor 11. Last Update was done with 2014 SP2, Build 246

- Loading back into this version could not be done fast and was cancelled

- Loading back was better into 2015

- The Inventor.IGS here could be processed back to Inventor 2014 and 2015 with a warning about simplified faces

- IGES-Import showed no bad geometries in Rhino 6, Fusion 360, and 3ds Max 2016

- IGES-Import could not be done with ACADM 2014

- IGES-Import was possible with ACADM 2015 and showed no bad faces