Animating a mangle-wheel

[sjeffff]

As a personal excersice I am 3D modelling different mechanics from a website called 507movements.com. One of the next mechanisms I want to model is #36. Since the value of these mechanics is in the motion. I want to animate them as well. But with this one I don't even know where to start. Therefor this question; How would I animate such a mechanism? Any resources or tips are appreciated.

[davebYYPCU]

Weellll,  In Fusion!

Should we challenge @chrisplyler 

I suppose it could be done with workarounds, and infinite tweaks of a Motion Study,  

Fusion does not have any rack and pinion joints, so it will be revolves and a slider,

all marching to the same band.  Angles / distance ratios, All set to time correctly.

As a new person you would need a great deal of patience mixed with perseverance.

[TheCADWhisperer]

File>Export and then Attach your *.f3d file here.

[chrisplyler]

I'm not touching this one with a ten foot pole. If I had to model that thing for animation accurately in F360 as a job requirement, I would go sign up for unemployment checks. It would be easy enough if Chad finished the required Joint list, but apparently the powers that be at Autodesk think crap like an "Inspirations Panel" is a better use of resources.

[mickey.wakefield]

Hi sjeffff -

It would be pretty tough, yeah....I think I would probably handle it as an animation, if you really wanted to do it, but this is without joints, its just moving stuff about like in a stop-motion film.....not bad, but probably not what you'd like. 

Incidentally - you CAN model a rack and pinion, I've attached a video to show how...but things get hairy when you might like to do a worm-gear, for example. We can't relate the motion of one degree of freedom in one joint to two different degrees of freedom in another. (For a worm gear: the rotation of the shaft would be related to the translational movement of the follower, AND it would be related to the rotation of the follower as well.

Fusion 360 has a limited set of kinematic and dynamic simulation capabilities, which are more or less in line with what customers seem to want. I'd like to see much more, but the usage of similar tools in the industry is next to zero...there is really only one major player in the market for multi-body simulations, and they haven't grown in 15 years.....

If you DO want more of this - then please be vocal! I'd love it. (But then - I spent the first half of my career as a simulations engineer. 😉 ) 

https://www.youtube.com/watch?v=Ox3KGwza49k&feature=youtu.be

[I_Forge_KC]

@mickey.wakefield 

FULL KINEMATICS PLEASE

[davebYYPCU]

I was fully aware of the content you displayed, being available in Fusion, but it is not a - Use this Joint - scenario.

I was encouraging the Op to go that way, and my Texan mate would have something to do at work today.

[TheCADWhisperer]

@sjeffff  Where did you go?

[sjeffff]

Thank you all for your replies, I'll shelve this one for now. Calculating every single step to create the animation ain't worth it. Especially since it is part of the research/study/discovery to find out what happens with a given mechanism.

Also @mickey.wakefield could you let me know which software this is? I only care about the kinematics. Forces are irrelevant (for now). Especially since I feel like I will run into more, and more problems related to these limitations.

[mickey.wakefield]

Uhh.... I don’t really get it... the software I am showing in the video is Fusion 360, of course. What do you mean?

[sjeffff]

(...)I'd like to see much more, but the usage of similar tools in the industry is next to zero...there is really only one major player in the market for multi-body simulations, and they haven't grown in 15 years.....(...)

This one

[mickey.wakefield]

ADAMS. Last release is over 4 years old. And back in the day it was 50.000 USD. Per year.

[TheCADWhisperer · Accepted solution]

@mickey.wakefield @sjeffff 

https://forums.autodesk.com/t5/fusion-360-design-validate/animating-cams/td-p/8975596

The Dynamic Simulation Environment of Autodesk Inventor Professional has a plethora of motion joints not available in Fusion 360.

Students, faculty and schools can download Autodesk Inventor Professional for free from the Autodesk Student Community.

[mickey.wakefield]

Very true!

[sjeffff]

This sounds really interesting, will definitely take a look at it.

[TheCADWhisperer]

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@sjeffff wrote:

This sounds really interesting, will definitely take a look at it.

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Be aware that Inventor is a professional program and deserves (requires?) a professional level of preparation.