thread on conical trunk seat

[alessandroM]

Good evening.

Actually more than a thread should draw a profile that wraps around a conical trunk surface, can anyone help me?

Thank you.

 

[Tarkus]

type "coclea" in the search tool on the forum and look at the discussions, especially these:http://www.cad3d.it/forum1/showthread.php?7019-coclea-rototraslante&highlight=cocleahttp://www.cad3d.it/forum1/showthre...disegno-spirale-principiante&highlight=coclea.
If you still have doubts, put a sketch to make you understand what you want to do...:biggrin:

 

[alessandroM]

I have designed the development of the propeller to wrap around the cone, but I fear that it is necessary to calculate the length of the development itself... What is absolutely not trivial?

 

[Catafratto]

I'm not sure to give you good advice, but there are also equation sketch curves: Maybe seen the additional cone trunk casino work better. . .

 

[alessandroM]

I have done countless tests, on the cylinder works egregiously, when I repeat the same operation on the cone trunk is as if it goes mad, it no longer respects me the angle of the propeller.

as soon as I can attach the file

 

[Tarkus]

What do you mean, he's crazy?
Can you post a sketch of what you want me to get?

 

[Catafratto]

Do you like stuff like a starting point?
Bye!

 

[alessandroM]

Unfortunately, I am mistaken, says that version 17 is more recent than 16, perhaps because I have inventor 2012 :

 

[alessandroM]

That's what I'm trying to do... the profile does not wrap me up to the top...

 

[Catafratto]

No, it's 2013, ciccia... You need this, right? is done with a 3d sketch - equation curve, I don't know if in 2012 there is... I'll tell you in detail how I did it. . .

 

[alessandroM]

can't you save in compatibility with the 2012 version? If not tell me what commands you used. . .

Thank you.

 

[Catafratto]

no, you can't save in previous versions. . .
as I told you I went on sketch 3d and there I used the curved command from equation: in 2012 this command was already present (in 2011 I don't think so... )

 

[alessandroM]

Perhaps we speak of the same command, in my inventor 2012 (in English) I managed to solve with the helical curve command, in which I managed to give the "conicity" to the propeller using the taper option (which is to indicate the semi opening angle of the cone).

Thank you 1000 to all!

 

[Catafratto]

No, it's not the same but the important thing is that it works for you! :smile:

Bye!