return mechanism - - how to make a slider move

[Anonymous]

Hi!

              How do I make the slider move?

Thank you.

[Anonymous]

the file is attached

[Anonymous]

here is the screen cast

https://autode.sk/3iPniqz

thank you.

[WHolzwarth]

The slider will move, if the open slot in Connecting rod1 is changed to simply a hole.

You'd get a sloppy movement with a closed slot with rather short length, but only a hole instead of a slot does a really precise movement without backlash..

[Anonymous]

@WHolzwarth , thanks for your reply.

In my project the slot should be open.

The same connecting rod shall be used in different mechanisms.
That is why it is impossible to calculate parameters of connecting rod for every special case.

I have seen short animated movies on youtube and it works there.

So, I am sure it is possible. 

Thanks again!

[WHolzwarth]

I'd like to see a video of a working mechanism.

[Anonymous]

@WHolzwarth 

Yes, you are right, it won't work the way I did it.

I will try to find the video.

I have missed something 

[johnsonshiue]

Hi! Is this a school assignment? If yes, please work with your teacher or teammate to figure it out. You need to do the homework by yourself. I can give you a tip. Google the terms "Autodesk Inventor Drive Constraint" and there should be plenty of videos to show you how it works.

Many thanks!

[WHolzwarth]

I think, it should be similar like that:

https://www.youtube.com/watch?v=rKIoP67_MAI

[Anonymous]

@johnsonshiue , thanks for your reply!

No, this is not my school assignment.

This is my project and 

I am not good at mechanics

[JDMather]

@Anonymous 

Is the video that @WHolzwarth linked something like what you are after?

(The assembly as you created it is not stable - it has more than one motion solution.)

[Anonymous]

@JDMather , thank you for reply!

What do you mean by saying "The assembly as you created it is not stable "

[Anonymous]

Here is the base and  concept for my mechanism.

https://www.youtube.com/watch?v=SYYVxnLNzBI&feature=youtu.be

Thanks 

[JDMather]

---

@Anonymous wrote:

@JDMather , thank you for reply!

What do you mean by saying "The assembly as you created it is not stable "

---

It has multiple solutions for the motion rather than a unique solution.

Your assembly does not match the example in the video that you linked.

Note that in the video you linked the pivot point is in a fixed location.

[Anonymous]

+++

--Your assembly does not match the example in the video that you linked.
--Note that in the video you linked the pivot point is in a fixed location.

Yes, I know that,
but I need one end of the connecting rod to be connected to the wheel and another to the slider.


+++++++++++
--It has multiple solutions for the motion rather than a unique solution
it would be great if you could show me the solution which will work for real objects.

Thank you in advance!

[JDMather]

---

@Anonymous wrote:
it would be great if you could show me the solution which will work for real objects.

---

It will be tomorrow till I get a chance to make a video.  (Maybe @WHolzwarth will jump back in here.)

You can test it yourself.

Suppress the angle constraint that you are using to Drive and move parts around to produce all possible motions.

What do you observe?

There should be only one unique solution.

(Your mechanism works exactly like it would in the real world.)

[Anonymous]

@JDMather  I appreciate your help!

I will wait for the video.

Thanks

[WHolzwarth]

---

@JDMather  wrote:

---

It will be tomorrow till I get a chance to make a video.  (Maybe @WHolzwarth will jump back in here.)

I think, it doesn't make much sense with discussing the mechanism above. The connecting rod needs a change in modeling.

There are three contacts:

1. Pivot point - not on the wheel, but at the fixed base

2. Closed slot for a sliding contact with a pin on the wheel

3. Open (or closed) slot for another sliding contact at the rod's end

After changing the part a new discussion can be started

[Anonymous]

Sorry, I don't understand what to be done.

My youtube example is the base for my idea.

I need one rod's end to be connected to the wheel and  another to the slider.

How should I change the rod's structure?

Thanks

[JDMather]

You need a pivot point.

It can be anywhere (or most anywhere) along the connecting link.

You will have a lever.

Think of a child's teeter-totter playground toy.

The pivot point is usually adjustable.