Paketa
Guest
good evening to all, I managed in an empirical and absolutely unmanageable way, to build a round strap that works on 2 pulleys rotated by 90°. is there someone who has already faced this problem? . .
! v_!
! v_!
exxon
Guest
beautiful challenge (now I try...).
Paketa
Guest
... I try to attach my alborate as a point... (even if I'm ashamed as a thief! ! 
)
p.s: buona pasqua a tutti!!
!! v_ !!
)p.s: buona pasqua a tutti!!
!! v_ !!
Cast16
Guest
I can't open your ipt. siccuramente e inventor 2019/2020.... I try to attach my alborate as a point... (even if I'm ashamed as a thief! !
p.s: buona pasqua a tutti!!
!! v_ !!
However, I have attached my attempt. Give me a boner and tell me if it can help. you can play with the size.. .
Paketa
Guest
I have done some adjustments and some small correction and it is perfectly manageable!!
thanks!!
!! v_ !!
thanks!! !! v_ !!
exxon
Guest
did you make it by setting geometric constraints or by adapting it to the eye?
(I tried for a while, then I decided to postpone. )
(I tried for a while, then I decided to postpone. )
Paketa
Guest
...no, it is bound and parameterized in a very predictable way!
the solution lies in the basic approach: I fixed myself to get it with a single spline while he built it in pieces. . .
! v_!
the solution lies in the basic approach: I fixed myself to get it with a single spline while he built it in pieces. . .
! v_!
welcome to the machine
Guest
I am curious to know how to establish where the strap stops following the throat of a pulley and "decide" to go towards the tangent of the other. The picture is very beautiful, nothing to say, but I wonder what is the real trend of the axis of the belt. any part of its path lies on the orthogonal plane to the axis of the belt, or follows the pulley for more or less 180° and then begins to flench and turn towards the other? It's just the "more or less" compared to the 180 degrees of winding I can't see. Let's figure it out!
I realize that for the purposes of depiction my question is influential, I only ask it for curiosity. ..geometric
I realize that for the purposes of depiction my question is influential, I only ask it for curiosity. ..geometric
exxon
Guest
I couldn't do it. . .
Paketa, publish as you did!
Paketa, publish as you did!
Paketa
Guest
..si, indeed my enthusiasm for the cast16 solution (see Annex) is only partial.
appearance is great, as well as management. . ...ma... ..the incoming and outgoing twist from the pulleys is not "real". and it is not a secondary detail because the shape of the "swimming" of the throat should be derived precisely from the "tangence+torsion" of the belt to avoid the harmful friction of sliding (.. which are then the main problem of this kind of transmission and reason of my post...)the solution passes, as always, by a mathematical model that, as wttm says, is not at all easy to conceptualize!. But I don't despair! :
! v_!
Cast16
Guest
For those who don't have the latest version of inventor, here's the video: https://autode.sk/2zturofto improve it perhaps you can add a rotation as in this screenshot (number 2: 10° rotated):
exxon
Guest
the solution shown in the video is very brilliant (as it has arrived he knows only...).
I have the impression, however, that it remains a "esthetic" realization more than realistic than the path of the strap.
I tried to describe the function mathematically, but then I let it go. having to solve this problem, I think writing a specific optimization program could give the best result at the lower work cost.
I have the impression, however, that it remains a "esthetic" realization more than realistic than the path of the strap.
I tried to describe the function mathematically, but then I let it go. having to solve this problem, I think writing a specific optimization program could give the best result at the lower work cost.
Paketa
Guest
..in the "sweep" function of 2020 there is a "tortion" option. I thought that was the key, but sincerely, after so many attempts, I didn't understand exactly what it does and how it works. . .
! v_!
