spiral "agged" with circular trajectory

[davide75]

Hi, guys. I've got a question I can't figure out.
I have to make a spiral winding around a circular trajectory (a little like sometimes you see in electrical circuits by means or in serpentine) only that I respect perhaps a wing of which I read the discussions I find myself having a circular triatory that closes on itself.
I tried with the various functions of inventor but I just can't do it.
Have any of you ever tried? ?

 

[davide75]

http://www.youtube.com/watch?v=aqbxyghlocimore or less as you can see in this video that I found now if to someone interested, but it is laborious a lot.
I was wondering if there is a simpler way

 

[Tarkus]

the great Ilario proposed a long time ago a much simpler solution, which consists in subtracting a helid from an extruded profile, then bend the profile with the fold command, and then make a composite with the surface created by the excavation of the helid.
It's easier to see than describe it.
see if you find the discussion....:smile:

 

[davide75]

Thanks tarkus, I see if I can find her....but intanot tell me what you mean to "make a composite with the surface created by the helical excavation"?
if you kindly remember or post an example would be the top
Thank you again.

 

[davide75]

http://www.cad3d.it/forum1/showthread.php?t=17662&highlight=elicoideIn the meantime I found this discussion that could also be useful to other users and that's what it might do to my case

 

[Tarkus]

http://www.cad3d.it/forum1/showthread.php?t=17662&highlight=elicoideIn the meantime I found this discussion that could also be useful to other users and that's what it might do to my case

Yes, it's the discussion I said, only that I attributed the idea to the Ilario, instead I see that it's diegus, eek:.
I ask venia and both:biggrin:

 

[Tarkus]

Sometimes you drown in a glass of water.
Look at this...

 

[davide75]

In fact, tarkus is lost in a glass of water.....when you see the solutions .
Thank you! ! !

 

[Tarkus]

Yes, in fact, I was a little puzzled by the various solutions, then I said, but why can't a helid be folded normally without "enlobing" it in another solid?
in fact you can.:biggrin: