fitting marine propeller surfaces

[c3kkos]

Hello, everyone. .

So... being unexperienced with surface modeling, I ask advice to all of you.

My personal challenge today is as follows:

using rhino (but I also have solidworks) I have to create fitting surfaces between the shovel and the "mode" of a marine propulsor, or propeller that you want...

Good. I'm not sure what rhino function to use to recreate this surface, so I don't know what constructive geometries to create to achieve the purpose. .

uppo the explanatory image that I hope is worth more than one hundred words

 

[ziotoy]

I use other software, but if it can be useful, put an iges and tell me the value of the radius you want to collect. I'll try and do it.
Say hi.

 

[Exatem]

more than in the naval area, this discussion was placed, even for greater visibility to experts, in the area dedicated to rhino. If you agree, I'd move.

 

[c3kkos]

That's great. .

to answer Uncletoy:

Thanks, but more than the result, I am interested in the procedure

 

[Exatem]

That's great. .

to answer Uncletoy:

Thanks, but more than the result, I am interested in the procedure

Okay, done. .

 

[incasinata]

If I understand... what you have to do... .

You could extract the "curve finali" of the two objects to be collected and then create the surface to collect them

 

[c3kkos]

ok I don't know how but I managed to use the "comune" fillet for the two surfaces.

banal solution almost idiot, you will say.. but I have not yet understood with what criterion rhino digests this command. .

I assure you that when importing the model does not collect a nice tube.. after two extends & trim, instead you...

However the red surface, after the fillet, is not trimmabile.. :

 

[Fulvio Romano]

a procedure could be to intersect the surfaces and then collect them, as I think you did.
at this point, extend the green surface, extend it a lot, you will see that then the red one decides to shred.
then...trim me among them the green surfaces and make a new fitting of all the "cut" of the shovel that continues on the encounter of green surfaces. .

It's a little delicate, but rhino is monstrous with the fittings... with alias it would take a couple of hours... !

 

[mariuss.r]

ok I don't know how but I managed to use the "comune" fillet for the two surfaces.

banal solution almost idiot, you will say.. but I have not yet understood with what criterion rhino digests this command. .

I assure you that when importing the model does not collect a nice tube.. after two extends & trim, instead you...

However the red surface, after the fillet, is not trimmabile.. :

I would use the _blendsrf command to collect the two bodies, after having trimmed suits.
I tried to shape a propeller biggrin: calling her propeller is an euphemism) to show you the type of connection you can get.
see image and file attached

 

[c3kkos]

Okay. I try and then I will post the results
Meanwhile thank you for the answers.

However the 3d model of the shovel is obtained for splines skinning.. in turn generated by a software.. Therefore the resulting surface has critical points at the ends. .

exists in rhino a way to uniform undesirable "asperities"?

 

[Fulvio Romano]

sure! as in many programs, to remove the "asperities" in the fast and of excellent quality is to....rebuild in manina the curve overlapping it to the previous!

with a little experience you get shocks of about a tenth of millimeter, with a very beautiful curve and started

 

[c3kkos]

Here. It was the information I wanted. .

 

[mariuss.r]

Here. It was the information I wanted. .

There are at least 3 commands that help you to "soften" curves and surfaces

1) _fitcrv to reduce the number of control points within a given tolerance

2) __fair to "soften" the curves by removing "asperit" within a given tolerance

3) _fitsrf to do the same thing as point 1, but related to surfaces.


... surely there are others, I use these mainly.

 

[c3kkos]

Thank you mariuss!