IGS converted to Dwg is not in solid

[dmmahesh]

Good day,

 

I've opted for 3D scan of a part, it is Shoe Horn. And the scaned people sent me an .igs format and I requested them to mail me .dwg format to work with ACAD2007.

Accordingly they too converted .igs to .dwg, but the converted .dwg file is unable to convert into surface or solid, once if it could be converted in surface or solid only we can do further development.

 

Any one can guide or help me to convert this into surface or solid. Or could you help me by make this as surface or solid model, to work further with ACAD 2007.

 

Thanking you.

Mahesh.DDRME_3DSCAN_shoehorn_dwg_File_180313.dwg

[f700es]

I think this can be recreated in say AutoCAD 2013 with it's Surface Tools and then Surface to Solid. Can they not provide another format maybe as a go between so you can have a 3D Solid? Perhaps another with some more experience can jump in and give some more insight. I might take your DWG and have a go with it in 2012/2013 and see what I can do with it.

[JD Mather]

Can you zip and attach the original *.igs file here?

[dmmahesh]

Thanks and expecting your support and guidance.

[dmmahesh]

Here with we are attaching the .igs file, as you adviced.. kindly help me as surface or better solid to work with ACAD-2007.DRME_3DScan_ShoeHorn_170313.zip

[JD Mather]

Try this file (start New File using correct template (metric or imperial)) and then issue the ACISIN command to import this file.

If this does not work let me know and I'll post a dwg file later today.

or

download free Inventor Fusion htp://labs.autodesk.com and convert it yourself.

DRME_3DScan_ShoeHorn_170313.zip

[dmmahesh]

Thanks Mr.JD Mather,

I worked with ACAD 2007,

 

opened new template:

Templates / Sheetsets / Manufacturing Metric

 

Set the units as mm with precision 0.00

 

Using command INSUNITS :1 (instead 4)

 

Then as per your advice issued ACISIN command and the solid model opened in model and in a single view port at Layout as well.

 

Just to I measure the distance using distance command, it shows different value, for eg., I measured the shortest distance in the pocket of the solid, it shows just 0.2 along x axis.

 

But actually it should be 8mm.

 

Guide me further what I've to do with ACAD 2007 or what mistake I did.

 

Also guide me how to enlarge this solid proportionally overall dimension into 1.1%, as this would be the plastic moulded part.

 

Guide and expecting.

 

Thanking you.

 

FYI here with I attached the dwg file after import your *.sat file

 

 

Regards,

DRME_SH_AcadForm_JDMthr-guidance_01.dwg

[JD Mather]

I was concerned about the size as AutoCAD doesn't handle units well.

But since you know what size the part should be, you can simply Scale to get it the correct size.

I'll take a look at it in a few hour - have other things to do at this time.

 

As far as scaling for plastic mold I suspect that would be a non-uniform scale.

If you can tell me the material I can scale it in Inventor tooling which takes into account material properties and geometry to do shrink analysis and perform correct non-uniform scale.

[dmmahesh]

Thanks.

As for this part concerned it would be in PPCP with little % of Talk content. For this the shrinkage rate would be about 1.05% to 1.1%, hence I requested you to enlarge about 1.1% With that we could develop core and cavity.

 

If you could support me by providing the enlarged 1.1% more than this dwg., and can be able to work with ACAD 2007 as 3D solid then it would be grateful to develop the core cavity part as per my requirement.

 

pls support

[JD Mather]

I measured the shortest distance in the pocket of the solid, it shows just 0.2 along x axis. But actually it should be 8mm.

 

You can do this yourself.

Scale

select object Enter

select basepoint

'cal Enter

8/.2 Enter

to get to 1:1

then

Scale again by 1.1 to enlarge by 10%.

[dmmahesh]

Yes as you said,

 

if I did like this the dimension is not proportionate and even abnormal.

 

FYI, here with I attached the another one dwg file which is nearer to this discussion model, but not perfect in profile, but the dimensions like length and width, thickness would be as per the standard. Guide me,

 

File Name:- "Shoe_Horn_3D_FinalProduct_270213.dwg"

 

Meanwhile try to support me convert this *.sat file into *.dwg to be workable with ACAD 2007.

 

However FYI I also attached as per your guided scaled dwg, using Scale by 12.5/0.5.

 

File Name:- "DRME_SH_AcadForm_JDMthr-guidance_andmayb_ok_02.dwg"

 

Pls compare both attachment and comment, is the scaled dimension is almost matched with the other one in the length, width and thickness only, do not compare the radius or curved profile, because the *.igs or *.sat files dimensions only perfect, as they were derived from 3D scan of exact product.

DRME_SH_AcadForm_JDMthr-guidance_andmayb_ok_02.dwg

Shoe_Horn_3D_FinalProduct_270213.dwg

[dmmahesh]

Apart from my reply this morning, again I've an issue. As per your guidance some how I've arrived my dwg, almost equal as per the sample. Now I need to slice the solid so that to design core and cavity for mould.

 

In that I tried slice, by keeping consideration with draft angles to be in both halves, to slice w.r.t the surface. But it is unable to slice and ACAD 2007 shows result failed to slice the selected solid.

 

Please guide me how to slice and / or if possible, try to give me sliced halves and with them I'll try to develop further.

 

Thanking you.

DRME_SH_AcadForm_JDMthr-Maybok_shrikage_added_03.dwg

[dmmahesh]

Most priority,

 

pls guide and help. In this file the unlocked layers shown the part dwg and the surface along which the solid has to be sliced. I checked the surface through out the solid, it passes exactly through the solid, with out any over flow or suppress.. but it is unable to slice with SLICE command in ACAD 2007.

 

Kindly do the needful.

DRME_SH_AsSample_CavityInsert_200313.dwg

[JD Mather]

If I do a Curvature or Zebra analysis there is a rather obvious anomaly at the front of the surface.

[JD Mather]

The part is not symmetrical and the slot does not appear correct (symmetrical with tangent arcs)

 

[JD Mather]

It is not good for these curves to be converging

watch this video (for a different program, but the principles are the same for any CAD program)

http://au.autodesk.com/?nd=class&session_id=10379

[dmmahesh]

Thanks,

 

ofcourse, as I informed earlier, this model is generated by scanning a physical plastic component using 3D scan. Perhaps that sample may be un symmetrical in thickness. And regarding the slot that we too observed, and can be corrected with our model. As of now to slice this one what can I do? how to slice it, as you guided in the surface just I drawn a spline curve along the median line of the part drawing in one side and mirrored it, and also drawn a curvature along the middle of the part. Then I lofted all three curves and obtained this surface.. because of this may result those curves might been converging as you mentioned.

 

Kindly guide me how to draw a surface with non converged curves, to slice the part or other ways to slice the part.

 

Thanking you.

[dmmahesh]

Again I tried a lot and almost revised the surface passing across the center line of the part drawing, though the solid is unable to slice. Kindly guide or support me by sending me the sliced solid into two pieces, so that to proceed further.

 

Here with I submitted my revised drawing with modified surface as attached here with.

 

Thanking you.

DRME_SH_AsSample_CavityInsert_200313.dwg

Edited March 21, 2013 by dmmahesh
Attachment not attached.

[JD Mather]

.....we too observed, and can be corrected with our model. .....

 

I would go ahead and correct the model rather than try to work with this model.

When you create the slicing surface the outside boundary can be a simple rectangle.

[dmmahesh]

Thanks and expecting your support asap.

 

Meanwhile I'm still trying to obtain perfect surface accordingly to slice the model into two halves so that to develop core and cavity models.