rhino exports the step files?

[CADEnrico]

Hi.

I'm evaluating the purchase of rhino to model plastic pieces for which a mold will be built.

My official cad is inventor who has a plug-in for the surfaces, but he didn't convince me.

My intention is to model the surfaces with rhino and then to carry out mechanical processing with inventor.

in particular I ask you:

1) Can rhino export in step format?

2) is it a right procedure to model surfaces with rhino and then to do mechanical processing with another cad?

Hello and thank you
enrico

 

[stef_design]

excuse and buy a cad that has everything? like catia, nx or proe?
rhino is suitable for the concept but has limits in the surfaces (tangencies, unions) is good only for renders or to have a general vision of the project. not for the engineering.
Hi.

 

[CADEnrico]

Hi.

Thanks for the answer.

I just need to use the inventor plug-in


Hi.
enrico

 

[Fulvio Romano]

excuse and buy a cad that has everything? like catia, nx or proe?
rhino is suitable for the concept but has limits in the surfaces (tangencies, unions) is good only for renders or to have a general vision of the project. not for the engineering.
Hi.

I don't really agree. rhino (which I do not use if not occasionally) seems to me a great program for the modeling of surfaces in class a, certainly higher than the package caia surfaces, although lower than alias.

 

[enri]

quoto fulvio, I have seen use rhino also to make 3d engineering of steel buildings, and it is very precise, depends on tolerance, certainly all in the perspective of the nurbs modeling. rhino imports and exports to step and satellite acis.

 

[CADEnrico]

Hi.

I don't know the nurbs very well and I don't know what "class a" means.

so that the nurbs are the extension 3d of the thorns that being polynomial curves allow to carry out the derivation operation by multiplication.

The problem I see is whether the step file produced by rhino is readable by inventor without having to perform additional operations.

I unload the trial of rhino amount in inventor some example and see what happens. At the end of work I write a feedback here.

I would have liked to find someone who has already experienced

Hi.
enrico

 

[CADEnrico]

Hi.

I just read on wikipeda the meaning of class surfaces a.

".. class a surface is a term used in the design jargon indicating a style surface, obtained from the union of multiple free-form surfaces, which presents continuity of tangency and curvature in correspondence of all edges of union... "


observation
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a class surface is composed of the union of elementary surfaces.

elementary surfaces are polynomials (*).

the typical elementary surfaces are: plane, sphere, paraboloid, ellipsoid, etc.

along the lines of fitting the surfaces have the same tangent plane (derived before) and same curvature (derived second).


my comment
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with class surfaces, you can model all surfaces of the world.

problems can arise if I have to shape a surface that has several spatial twists. In this case the surface will have many elementary surfaces and many fitting lines.

For what I have to do, class surfaces are more than adequate.


Hi.
enrico

(*)
plan is an order polynomial 1 in x, y, z variables
ball is an order polynomial 2 in x, y, z variables
ellipsoid is an order polynomial 2 in x, y, z variables

 

[stef_design]

...even if lower than alias.

in what is less than alias?

 

[Onda]

I model very often objects in rhino and then I bring them into solidworks without any problem, so I guess you can do the same with inventor.
from my point of view is a great surface modeler, but I don't know alias so I can't make a comparison.
what you want to do costs less than buying a high-end modeler like cat with surface module and, especially if you already have inventor, it works egregiously.
you can do class surfaces at (transfer and curvature continuity) and have plenty of controls to adjust the surfaces and your liking. its accuracy is not questioned, it is also very useful to repair corrupt step files and then transfer them to a parametric cad once etched

 

[X3D]

rhino has limits in tangences and unions and is only suitable for renderings?
This is new to me!!!
sincerely I know rhino from the distant public beta of '97 and already then managed well tangenza curvatura and various unions and rendering if not the affiliates of the plug-ins, at least for the v4 is not that it is maximum.
if you want with rhino you beat a bit but you can also do classes to what with alias and much simpler and indicated.

the plug-in you refer to is probably alias for inventor in practice this kind of modeling type sds has been added recently also in nx7.5.

my advice is rhino you do practically everything and usually many studies adopt it just for the price the speed with which you model and the ability to export practically in any size step included.

 

[mariuss.r]

Hi.

I'm evaluating the purchase of rhino to model plastic pieces for which a mold will be built.

My official cad is inventor who has a plug-in for the surfaces, but he didn't convince me.

My intention is to model the surfaces with rhino and then to carry out mechanical processing with inventor.

in particular I ask you:

1) Can rhino export in step format?

2) is it a right procedure to model surfaces with rhino and then to do mechanical processing with another cad?

Hello and thank you
enrico

The answer to question 1 is...
rhino exports to step with choice between 3 configurations
ap 203 configcontroldesign
ap 214 automotivedesign
ap 214 automotivedesigncc2

The answer to question 2 is yes, you can ask

I personally use the pair pro/engineer and rhino since 2002 and am satisfied with it.

small advice:
to have solids in inventor, make sure to have solids in rhino (polisuperfici perfectly closed).

for export use step ap format 214 automotivedesign.

 

[CADEnrico]

Hi.

I thank all the people who have responded to my thread for the precious suggestions.

I decided to buy rhino

Hi.
enrico