chiocciola-vite mechanism

[DANI-3D]

Hello.

I have to design a mechanism, which for the handling of a piece, uses a recirculation screw and its snail.

I would like to simulate the real movement, percui to every turn of the life the snail should move one step.

What is the best solution?

I tried with a "camma" connection, but it doesn't take me the helical surface.

thanks for the advice

 

[maxopus]

There's no way you have to go mad at something like that.
Just use a servo motor to operate the shaft and two screenshots of the initial and final position of the nail.
at this point you simply need to set the rotation and progress speeds so you have the desired synchronization.
of course I recommend animation and not mechanism.
unless you have to perform in-depth analysis of the mechanism.

 

[DANI-3D]

as of recirculation screws for now there are minimum 5 I fear that synchronizing all movements with animation functions is complicated

 

[cacciatorino]

I don't know pro/e, but not simpler a mathematical relationship between the offset distance of the cart compared to the frame and the rotation degrees of the screw?

 

[maxopus]

I don't know pro/e, but not simpler a mathematical relationship between the offset distance of the cart compared to the frame and the rotation degrees of the screw?

hi hunting, I never tried with the solution you proposed and probably also right.
when I had to deal with this issue I found very much sent the method I indicated.
apply a servo motor for rotation.
of this servomotor directs the rotation speed.

establish the initial and final points of the translation (it is really 3 clicks).
at this point you establish the speed of translation (which will be related to the step of the trapezoidal screw).
But as soon as I have some time... I do the proof you told me, you never know it works better:biggrin:

 

[cacciatorino]

when I had to deal with this issue I found very much sent the method I indicated.

But I didn't understand if the user had to make a video with the moving axieme or was in the assembly environment and was planning the cinematography. in both cases the strategies are clearly different.

 

[DANI-3D]

This is a new project, which I practically started today, which provides for the use of a number of recirculation screws.

Before starting the real design I wanted to define how to set the various couplings to have less problems in moving forward with the work and being able to easily do all possible simulations.

 

[dimitry_21]

there is a special function to get the chiocciola mechanism and ball recirculation screw.. .
It's called rack and pinion. l find in the mechanism section under gears.
If you want to turn the chocolate and move the screw back and forth, just put in the definition of the axieme the nail as a pin and the screw as a course.
at this point go on mechanism.
choose gears, on the window that opens you choose rack and pinion.
define how lazy the movement of your pigeon (pin) and on the step circle gives it the step of the screw. then go on rack and segli the movement of the vine (course).
here now you have your working lives and especially with the real movement!
Bye!

 

[DANI-3D]

Good idea.

I made some attempts, but I couldn't, would you be so kind as to apply the mechanism in the annexed set?
the turning screw should let the pigeon move.

Thank you very much

 

[dimitry_21]

Here... Tell me if that's okay.
Still careful... you have used two constraints on the screw (cylinder and planar) to proe do not like things... use the pin that does the same thing... and it is the correct way... ah.. if you want to create a rotation bond you have to create a reference axis... as I did in the witness... I hope I helped you!
Hello, matteo

 

[DANI-3D]

perfect.

thank you so much, good to make.

 

[dimitry_21]

Don't worry. It was a pleasure! bye:

 

[DANI-3D]

appetite vien eating.

If at this point I would like to add a hand threaded sx what do you recommend, to add another axis?
Is it good that every detail has its rotation axis?
or I can use that of the other pigeon.

 

[dimitry_21]

appetite vien eating.

If at this point I would like to add a hand threaded sx what do you recommend, to add another axis?
Is it good that every detail has its rotation axis?
or I can use that of the other pigeon.

Hi.
I think you should use the axis of the axieme. .
This is because if you decide to replace a component you lose all the others attached to this.. .
If you want to put another pigeon, you just need to grab it by using it and refer it to the axis of the axieme and a plan of the axieme. .
Bye!