cycloidal gear.

[mike2334]

I am working on a cycloidal gear. I got all the parts to fit and the cycloidal disc to go around the fixed ring pins ok.  But how do you get the rollers pins and the pin disc (output) to work with the cycloidal disc. Joints, As-built joint, Motion link?

[jhackney1972]

You maybe can get an idea from looking at some videos on the subject on YouTube.  Here is one.

[mike2334]

Thanks John,

But all the You Tube's I can find do not show how to make the pin disk to turn around the cycloidal disc?

I can setup the eccentric shaft to turn the cycloidal disc ok, but how to get the pin disc to turn with the cycloidal disc?

[TheCADWhisperer · Accepted solution]

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[mike2334]

This is my *.f3d file

[TheCADWhisperer]

Interference?

[TheCADWhisperer]

Underdefined sketches?

If I dig deeper - am I going to find that you attempted to create perfect geometry (not possible in the real world) or am I going to find that you considered realistic and appropriate clearances for motion without excessive friction - in other words - a realistic real world design?

[TheCADWhisperer]

https://autode.sk/3qusCSl

I am not sure if this is possible in Fusion, but I would have to create the geometry myself to be sure.

[TheCADWhisperer]

Bottom line - I would not consider modeling a mechanism of this complexity without fully defined sketches.

[mike2334]

If you good to YouTube, in the search bar type in Interesting Speed Reducer and then enter.  You will see an animation of a cycloidal gear.  This is the movement I would like to do. So what you are telling me is that fusion 360 will not do this type of movement.  That surprise me, I'm new to fusion 360 but my back ground with Autodesk started with AutoCAD release 12 and CAMduct, Lisp.  So I'm a little familiar with what Auto Desk can do.

Thanks for your time and Help

Mike

[TheCADWhisperer · Accepted solution]

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@mike2334 wrote:

So what you are telling me is that fusion 360 will not do this type of movement. 

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That is not what I wrote.  

I would not create a rectangle, a circle or even a line without fully defining the geometry.
I suspect that I could get it to work in Fusion 360.

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@mike2334 wrote:

.... my back ground with Autodesk started with AutoCAD release 12

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I think I started with release 11 - but that was a long time ago.

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@mike2334 wrote:

 So I'm a little familiar with what Auto Desk can do.

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AutoDesk is a company name.  I used their product Autodesk Inventor Professional to quickly use your model (with a bit of clearance added).  If I spent a bit of time cleaning up the geometry I am quite confident that I could create a very nice working mechanism.

[mike2334]

My apology for my misunderstanding you. I found this formula on the net
to make the cycloidal drive, but it can use a little finagling. I did get it to work.
Thanks for your help.