Repair Machine Part to Casting Part
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 From:  Michael Gibson
4017.6 In reply to 4017.1 
Hi Anis,

> I have tried "delete" face but still need extra steps
> and manual tune up to get the final result.

Yes, that's normal that there will be a lot of manual tune up steps for this kind of work. If you need something more automated you might want to look at SpaceClaim, they have some specialized "de-featuring" tools. But I think those are more focused on removing things like fillets, I'm not sure that you're going to find a tool that will automatically repair an notched out area where you've got a lot of various pieces coming together like you've got here.

For repairing that area in MoI, the basic steps will be to delete the faces you don't want, and then you will need to untrim and retrim various surfaces, and then also construct some new surfaces as well.

There is a tutorial that covers this kind of object repair technique here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=446.17

In your case here, you can save some work by using the "ShrinkTrimmedSrf" command on some of the fillet pieces before you untrim them:
http://moi3d.com/2.0/docs/moi_command_reference10.htm#shrinktrimmedsrf

Take for example this fillet surface here:



If you untrim it (first use Edit > Separate to break it into an individual surface not joined to anything else and then select its trimming boundary by selecting one edge and then doing Ctr+A and then push delete), you will see this:



However, if you select the surface and run the ShrinkTrimmedSrf command on it before hand, it will cut off some of the excess area of the fillet for you, so that when you untrim it you will get this instead:




You can do the same thing for this piece over here:




This area on the other side where there are a bunch of little slivery surfaces stitched together is a much more difficult area to repair though:



Probably some of those bits are not just simple fillet surfaces. You may want to kind of leave that area for last and possibly try to model in some kind of new surface to fill that area in instead of trying to untrim the existing surfaces to get their natural extensions as with the other pieces.

- Michael

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 From:  Michael T. (MICTU_UTCIM)
4017.7 In reply to 4017.6 
Hi Anis,

I understand the confidentiality. Do you have access to a system with direct modeling capabilities such as delete surface etc.? I think what I would try first is something like that to remove the fillets and chamfer first, replace the machined material, then replace the fillets and chamfer.

Michael T.
Michael Tuttle a.k.a. mictu http://www.coroflot.com/DesignsByTuttle
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 From:  Anis
4017.8 In reply to 4017.5 
Hi Burr,,,

>>I'm unclear on what your removing.. Is it this part???
I need to repair those area to the initial shape.

Thanks
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 From:  Anis
4017.9 In reply to 4017.6 
Hi Michael...

>There is a tutorial that covers this kind of object repair technique here:
>http://moi3d.com/forum/index.php?webtag=MOI&msg=446.17

>In your case here, you can save some work by using the "ShrinkTrimmedSrf" command on some of the fillet pieces before you untrim them:
>http://moi3d.com/2.0/docs/moi_command_reference10.htm#shrinktrimmedsrf

I will follow the tutorial and back to the forum ....

Regarding SpaceClaim, you are coorect. As I know they only have "de-feature" to remove cosmetic shape. Not to bring object to initial shape.

Thanks,,, :)
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 From:  Anis
4017.10 In reply to 4017.7 
Hi Michael T.

>Do you have access to a system with direct modeling capabilities such as delete surface etc.?
In MoI I can delete machine area just by hitting "delete". But this not easy task to bring the trim surfaces to the initial shape. Do you have experience on this area you can share...? Not only use MoI, if you have another software that can help it will be good... At least I can follow the trick.

Thanks... ;)
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 From:  Frenchy Pilou (PILOU)
4017.11 
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 From:  Anis
4017.12 In reply to 4017.11 
Hi Pilou,

Looks like Geomagic is use to convert mesh data from scanner to nurbs surfaces.

Thanks...
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 From:  DannyT (DANTAS)
4017.13 
Hi Anis,

For the time I had it's a little rough but I think if it's going to machined later it should be good enough.

Only had time for one side, maybe it will translate to the other side, didn't check.

Cheers
~Danny~
Attachments:

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 From:  Frenchy Pilou (PILOU)
4017.14 In reply to 4017.12 
You can import any 3Dfiles not only from a scanner ;)
POLYGON IMPORT/EXPORT
3DS OBJ
DXF PLY
IGS STL
LWO VRML
NAS WRP

CAD IMPORT/EXPORT
IGES
STEP 203/214
Neutral
VDA
Pro/E PRT
Parasolid .x_t* and .x_b*
SAT


http://www.youtube.com/watch?v=Kbnbea3Hr9E reverse ingineering
http://www.youtube.com/watch?v=0gJThuVyMSQ hole filling
etc...

EDITED: 3 Feb 2011 by PILOU

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 From:  Michael T. (MICTU_UTCIM)
4017.15 In reply to 4017.10 
Hi Anis,

I do use ViaCAD at home as well as MoI. It does have direct modeling features. It is inexpensive. Sometines (as with all direct modeling softwares) can be tempermental :-) No guarentees.

I have used it to remove fillets to alter geometry and then replace the fillets.

You can PM me if you like to see if I can do something with it.

Let me know.

Michael T.
Michael Tuttle a.k.a. mictu http://www.coroflot.com/DesignsByTuttle
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