problem conversion file .3dm to .igs

[16fra]

Hello everyone,

I have to export rhino files to open them to a company that works exclusively with jewelcad (and possibly 3design). .
jewelcad opens only 4 types of files, its propretator, .dxf, .igs, .stl.

I would like to export rhino models to .igs so that it retains the essential surfaces and properties of the model, so that they can possibly change the geometries without major inconvenience.

the problem is that if I convert to .igs when I open it in jewelcad I find all the primitive geometries I used intersected (as if he had lost the trim).

I tried to export to .igs also using other software (sw, ptc creo), the result on jewelcad is quite similar.

the .igs files that I generated imported on rhino are entirely correct. . .

before delivering mesh models (.stl) do you have suggestions so that it can get models in closed .igs? Does anyone know jewelcad? ?

Thank you.

 

[16fra]

Do I make mistakes so basic and huge?
someone can give me directions to get a good conversion of .3dm files to .igs
:frown:

 

[enri]

I know export iges is of various types, and has more options, have you tried them all? quarters are lost.
However intelligent these of jewel cad, no import 3dm, which is open, very used in jewelry design, and no solid format.

 

[enri]

I am taking a look, surely it is the type of wrong iges, when you expose, on "iges type" there is "predefinite" definitely you used this, go to change types-->new, and try to change parameters, especially those on surfaces, specifically you should set the surfaces "128 + 3d cutting curves" from the guide: "iges 128 means that all cut surfaces are exported as uncut surfaces." I'm still talking about rhino 5, but also on 4 there are options.

 

[16fra]

thanks enri,
I tried some export settings, since it didn't change much I tried to model following different strategies but nothing. .
So I jumped into the forum.
Now I try to follow your directions.

thanks again for the moment:smile:

 

[16fra]

I am taking a look, surely it is the type of wrong iges, when you expose, on "iges type" there is "predefinite" definitely you used this, go to change types-->new, and try to change parameters, especially those on surfaces, specifically you should set the surfaces "128 + 3d cutting curves" from the guide: "iges 128 means that all cut surfaces are exported as uncut surfaces." I'm still talking about rhino 5, but also on 4 there are options.

I tried nothing. in rhino5 iges 128+ cutting curves should be created by hand as format. . .
However it is not seen correctly by jewelcad.
I also tried with igs 144 and igs 143... but nothing done unfortunately!

 

[16fra]

I know export iges is of various types, and has more options, have you tried them all? quarters are lost.
However intelligent these of jewel cad, no import 3dm, which is open, very used in jewelry design, and no solid format.

hi to all I found this technical document of jewelcad:http://www.jcadcam.com/techsup.htmland in particular:q1. how to import iges files to jewelcad, many different iges files cannot be imported to jewelcad?
a1. the jewelcad iges importer only accepts entitiy no. 128 : nurbs surface. for other types of entities, jewelcad just ignores them.

there are also some restrictions in importing nurbs surfaces to jewelcad. since jewelcad surfaces are only uniform b-spline surfaces, when importing nurbs surfaces to jewelcad, they may change shape if they are actually non-uniform or rational. for example, a sphere represented in form of a nurbs surface will become a box-like object after imported to jewelcad.So I have to change the approach to modeling and convert all cloud surfaces into b-spline, otherwise jewelcad converts geometries and includes them in box or primitive surfaces.

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[16fra]

also changing the modeling strategy the problem remains.
I tried to use spline to model and as a result you get in the case of a simple extrusion that:
- the side walls are converted to igs (128 + 3d cutting curves) correctly;
- surfaces at the end (extrusion caps) are not imported as larger surfaces than extrusion board.

 

[mariuss.r]

also changing the modeling strategy the problem remains.
I tried to use spline to model and as a result you get in the case of a simple extrusion that:
- the side walls are converted to igs (128 + 3d cutting curves) correctly;
- surfaces at the end (extrusion caps) are not imported as larger surfaces than extrusion board.

I fear that jewelcad has considerable limits in surface management, judging by what you describe, my advice is to export to stl with very tight parameters.
only so you can be sure that your object is seen and used exactly as you designed it.

 

[16fra]

the problem is of jewelcad.... :angry:

looking for finally found official technical indications.
http://www.jcadcam.com/techsup.htmlin particular here highlights the limits of the iges file:
q1. how to import iges files to jewelcad, many different iges files cannot be imported to jewelcad?

a1. the jewelcad iges importer only accepts entitiy no. 128 : nurbs surface. for other types of entities, jewelcad just ignores them.

there are also some restrictions in importing nurbs surfaces to jewelcad. since jewelcad surfaces are only uniform b-spline surfaces, when importing nurbs surfaces to jewelcad, they may change shape if they are actually non-uniform or rational. for example, a sphere represented in form of a nurbs surface will become a box-like object after imported to jewelcad.however has limits also using b-spline, in fact using the spline correctly interprets only the walls of the extrusion, but not the plugs! (as I mentioned in the previous answer). .

So I could say that the matter is closed.

thank you all anyway!