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Can't create drawings of surfaced IGS files

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Message 1 of 12
Anonymous
562 Views, 11 Replies
‎10-22-2003 11:15 PM
‎10-22-2003 11:15 PM

Can't create drawings of surfaced IGS files

We import our customer data as surfaced IGS files on a regular basis.
There's no problem with designing around these parts as we are able to work
with them with no difficulty. The problem lies with creating drawing views.
The tooling I design shows up fine, but the actual part geometry is absent.
Is there a way to create views with the parts shown? Additionally, is it
possible to show the parts in a different colr than the tooling in the
drawing views?

Please help-

Jim
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Message 2 of 12
Anonymous
in reply to: Anonymous
‎10-22-2003 11:25 PM
‎10-22-2003 11:25 PM

It sounds as if your IGES are still surfaces. They will not show up in IDW.
Can you stich the surfaces into a solid in IV or MDT.

Kathy Johnson
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Message 3 of 12
Anonymous
in reply to: Anonymous
‎10-22-2003 11:27 PM
‎10-22-2003 11:27 PM

Stitch and promote surfaces to solids. The surfaces must be "clean" watertight envelopes. Most IGES files I see do not meet that requirement. If you have trouble getting a particular IGES file to a solid post it to IVCF and someone will help.
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Message 4 of 12
Anonymous
in reply to: Anonymous
‎10-22-2003 11:35 PM
‎10-22-2003 11:35 PM

 Thanks so much for the quick
response.

 I will post the file to IVCF as you
suggest.  You stated that most IGS files do not meet the requirements of
"clean, watertight".  I did run the "Stitch" and "Promote" routines
with no success.  Numerous surfaces are unable to be stitched.  How
are these parts processed to make them compliant, or are they simply used as-is
and not shown in the drawing files?


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Stitch
and promote surfaces to solids. The surfaces must be "clean" watertight
envelopes. Most IGES files I see do not meet that requirement. If you have
trouble getting a particular IGES file to a solid post it to IVCF and someone
will help.
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Message 5 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 12:35 AM
‎10-23-2003 12:35 AM

The IGES files I get are very rarely
"watertight."

 

This is something that Autodesk really needs
to address.

 

Andrew


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Stitch
and promote surfaces to solids. The surfaces must be "clean" watertight
envelopes. Most IGES files I see do not meet that requirement. If you have
trouble getting a particular IGES file to a solid post it to IVCF and someone
will help.
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Message 6 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 07:31 AM
‎10-23-2003 07:31 AM

>The IGES files I get are very rarely "watertight."

This is something that Autodesk really needs to address.



For the most part it is not their fault, unless it was an Autodesk product that produced the IGES, but then you wouldn't need an IGES anyway.

I recently created a boat hull in MDT exported to IGES and opened the IGES in Inventor. The surfaces didn't match the MDT surfaces. I then opened the MDT-IGES file in another SoftWare and it was perfect. Saved the surfaces with no changes as IGES from the other SoftWare and opened in Inventor and they were perfect. Figure that one?
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Message 7 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 08:13 AM
‎10-23-2003 08:13 AM

That is a head scratcher....

Is it possible that you did something differently on the two IV imports? I've
seen differences using the healer on import (will wrinkle surfaces when it
tries to adjust tangency) vs not and also stitching promoted surfaces in part
mode vs stitching them in construction mode (it appeared that when done it
part mode it tries to adjust tangency and when done in construction mode
doesn't). I guess the healer probably affects other things as well, but may
not be as easily detected as the wrinkles.

If you used any sort of healing with the other software (and it's the one I'm
guessing); I'm pretty well convinced that it is superior to the ACIS healing
routines and may have done it's work in a more elegant and subtle way which
could have affected the results coming into IV.

Dunno, just guessing. Can you post the iges? That is a curiosity.

==================================

"JDMATHER" wrote in message
news:f195be1.4@WebX.maYIadrTaRb...
> The IGES files I get are very rarely "watertight."
> This is something that Autodesk really needs to address.
>
> For the most part it is not their fault, unless it was an Autodesk product
that produced the IGES, but then you wouldn't need an IGES anyway.
> I recently created a boat hull in MDT exported to IGES and opened the IGES
in Inventor. The surfaces didn't match the MDT surfaces. I then opened the
MDT-IGES file in another SoftWare and it was perfect. Saved the surfaces with
no changes as IGES from the other SoftWare and opened in Inventor and they
were perfect. Figure that one?
>
>
>
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Message 8 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 08:40 AM
‎10-23-2003 08:40 AM

Jim,

Do you use autocad as you final documentation? or do you stay in idw?
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Message 9 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 01:48 PM
‎10-23-2003 01:48 PM

Hi, Jim.

If you can use just the main parts (no hardware), it's in ivCF. Don't know if
it will help, as imported solids and idw's mix like oil and water some of the
time, but maybe ......

That was one of the "nicer" Catia 4 exports I've seen, but still required some
manual match-n-patch work (not something IV's well suited for). If you
encounter this situation frequently you might consider doing the drawings in
MDT (if that's what's available) as you can show open or unjoined surfaces in
drawing views and it's a more suitable environment than IV for accomplishing
some repairs if you have the need or desire. If you really do a lot of this,
getting friendly with a good surface modeling software might be of benefit or,
possibly, one of the third party translators.

Good luck with it.

============================

"Jim Kies" wrote in message
news:AA0A182A08927C1E961F05DE486FE42E@in.WebX.maYIadrTaRb...
> Thanks so much for the quick response.
> I will post the file to IVCF as you suggest. You stated that most IGS
files do not meet the requirements of "clean, watertight". I did run the
"Stitch" and "Promote" routines with no success. Numerous surfaces are unable
to be stitched. How are these parts processed to make them compliant, or are
they simply used as-is and not shown in the drawing files?
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Message 10 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 09:50 PM
‎10-23-2003 09:50 PM

Why not turn it into a parametric part? Insert it
into MDT, exploded it until it becomes a solid ( sometimes this will take you
two tries), click on the Part menu then Part again then Convert Solid. Once it
has been converted save it and open in Inventor.


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">

The IGES files I get are very rarely "watertight."

This is something that Autodesk really needs to address.

For the
most part it is not their fault, unless it was an Autodesk product that
produced the IGES, but then you wouldn't need an IGES anyway.
I recently
created a boat hull in MDT exported to IGES and opened the IGES in Inventor.
The surfaces didn't match the MDT surfaces. I then opened the MDT-IGES file in
another SoftWare and it was perfect. Saved the surfaces with no changes as
IGES from the other SoftWare and opened in Inventor and they were perfect.
Figure that one?

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Message 11 of 12
Anonymous
in reply to: Anonymous
‎10-23-2003 10:33 PM
‎10-23-2003 10:33 PM

Trish

I don't have a clue what you are trying to say. The part was created with MDT surfaces from another posters wires. MDT surfaces are not parametric. The surfaces would not stitch in MDT. I do not use MDT for original creation anymore, I only use it to edit poor surfaces from other files. I only did it this way because the wires were supplied from the other user in MDT and I wanted to create something quick and dirty as an example. To get the MDT surfaces into Inventor I had to save the file as an IGES. (do you know another way of getting MDT surfaces into Inventor?) The IGES surfaces from MDT did not look the same in Inventor, so I opened the same MDT-2-IGES file in another SoftWare and they looked fine. Saved the surfaces out as another IGES file from the other SoftWare (BTW try saving surfaces, not solids, as an IGES file from Inventor) and the MDT-2-IGES-2-SWX-2-IGES-2-Inventor looked fine.
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Message 12 of 12
Anonymous
in reply to: Anonymous
‎10-27-2003 05:07 AM
‎10-27-2003 05:07 AM

Jim,
See IVCF for MDT file. Some parts are not watertight and the IGES file is an assembly, not a single part file which causes problems in Inventor ipt.
J.D.
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