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E19B
Posts: 9
Registered: ‎01-15-2009
Message 1 of 7 (118 Views)

Trim the envelope of an imported object

118 Views, 6 Replies
05-18-2012 06:02 AM

I recieved several .stp files from a vendor and most of them imported without incident.  One part is giving me a major headache though.  The envelope of the solid body is much larger than the actual part.  This is causing the origin to be skewed by several orders of magnitude.  Any way to trim down the envelope to the part size?

 

End Cap Solid Body.JPG

 

Using IV2011 Pro.

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jletcher
Posts: 1,946
Registered: ‎05-18-2011
Message 2 of 7 (115 Views)

Re: Trim the envelope of an imported object

05-18-2012 06:07 AM in reply to: E19B

CAn you attach part. But I am geared to say no But I do know a few tricks I would like to try...


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James Letcher
2012 Factory Design Suite ( will not load 2013)
What happen to my Inventor :-(
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JDMather
Posts: 26,141
Registered: ‎04-20-2006
Message 3 of 7 (109 Views)

Re: Trim the envelope of an imported object

05-18-2012 06:59 AM in reply to: E19B

Copy to the Construction Environment, unstitch, quality check, repair anything that needs repairing, stitch, quality check, promote back to Modeling Environment.

 

http://home.pct.edu/~jmather/AU2008/ML205-1P%20Mather.pdf

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rdyson
Posts: 876
Registered: ‎04-11-2005
Message 4 of 7 (102 Views)

Re: Trim the envelope of an imported object

05-18-2012 09:48 AM in reply to: JDMather

JD,

Do you normally delete the original after copy to CE?

I've not seen you mention it, but haven't really been paying a lot of attention.

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JDMather
Posts: 26,141
Registered: ‎04-20-2006
Message 5 of 7 (96 Views)

Re: Trim the envelope of an imported object

05-18-2012 09:59 AM in reply to: rdyson

I normally pull the EOP above the original.
If there is no reason to keep it (the usual practice) I will then Delete all below EOP.

 

For really complex curvy stuff using stitch can actually change the part as it pulls surfaces together to close gaps.

It is sometimes important to compare the "fixed" part to the original import and it might be important to keep the original in the file (below the EOP) for documentation purposes.  Especially if you are working for an external customer where if anything goes wrong there needs to be a trail to follow. 

 

 

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E19B
Posts: 9
Registered: ‎01-15-2009
Message 6 of 7 (87 Views)

Re: Trim the envelope of an imported object

05-18-2012 11:15 AM in reply to: JDMather

Thanks JD, that's very useful info for fixing neutral files.  I definitely learned something today :smileyhappy:

 

In this particular case there is no problem with the geometry of the import.  The features all come in cleanly, the issue is with the extraneous boundary.  The best I've been able to come up with so far was to export an ACIS file to AutoCAD and STEPOUT a new file.  That reduced the envelope size quite a bit but it was still much larger than the part.  I have been back and forth with the vendor and tried different models but without any luck.  Any other ideas?

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JDMather
Posts: 26,141
Registered: ‎04-20-2006
Message 7 of 7 (83 Views)

Re: Trim the envelope of an imported object

05-18-2012 12:20 PM in reply to: E19B

E19B wrote:

In this particular case there is no problem with the geometry of the import.  The features all come in cleanly, the issue is with the extraneous boundary. ...


 

These are contradictory statements.

Did you follow my instructions.  Or did you just assume that it is OK?

 

If editing in the construction environment did not fix it then go back to CE and untrim (Extract Loop) the surfaces and find the problem.

 

Attach the original stp file here.

 

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