FreeCAD: Animating Gears with Python

Tutorial explaining the steps to create and animate gears using the part design in FreeCAD.
This technique covers creating the gear bodies and using python macros to drive the rotation animation by rotating the actual bodies. We cover working with macros, programming in python code, using the part design workbench and generally interpreting and planing the movement of the mechanics and converting these to a CAD solution, working out gear ratio's etc
#freeCAD #tutorial #3DPrinting #CNC
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[@artigianatoapriliano3655]

I greatly appreciated this tutorial. Specially the animation integration with python. Thanks a lot

[@MangoJellySolutions]

Thanks for your comments. Glad you found the video useful. Please have a look through the channel to find more videos on animation. I have also updated a few more on python and will be uploading more shortly that go more in depth with python scripting. Anything you want to know please hit me up with a question and I will try my best to answer it.

[@jacquesfavre999]

Right on the spot I was looking for
clear video, easy to follow, got the expected result, thanks for doing
I actually used gears from the FCGear workbench, worked just the same

[@MangoJellySolutions]

Thanks for your comments and support. I need to explore to FCGears workbench one day.

[@sjn8099]

Fantastic. First simulation for me :)

[@KnotHead1008]

Hi D. I think this kind of macro should be apart of an include in the Horology WB. This would be an awesome plug for it.

[@python360]

Thank you. Really clear tutorial. I want to learn to make parametric assemblies, do you have any tips?
(Eg. 600mm wide cupboard has 1 door, when changed to 800w it gets 2 doors)

[@MangoJellySolutions]

Thanks, glad you enjoyed. I am sorry I have never tried doing these kinds of assemblies in freecad. I will do some research and come back to you.

[@harrismike6874]

Center diameter distance must be equal to module*(aithmetic average of sum of number of teeths)
Rotation angle =360/number of teeths

[@kissingfrogs]

This is awesome. But how do you make it stop. I ran my sketch animation macro in the editor, but I dont know how to make it stop. I had to quit freecad so I could restart it with an added timer.stop statement. Maybe thats the only way.

[@joicezuza5539]

It can't run,
" Traceback (most recent call last):
File "", line 1, in
NameError: name 'timer' is not defined
How can I solve this problem? Thank you.

[@akinsolaibrahim9844]

What's happening?
The python console is writing
Traceback (most recent call last):
File "", line 1, in
NameError: name 'QtCore' is not defined

[@MangoJellySolutions]

Please post your code and let us know what version of freeCAD you are using.

[@stefankrimbacher7917]

Is an animation possible in A2plus workbench with gears?

[@MangoJellySolutions]

Unfortunately not.

[@harrysas08]

i was following the video then just after 12:16 your python console popped up? mine did not, what did you do ?

[@MangoJellySolutions]

If you go to view, panels python console you be able to access it from there.

[@MangoJellySolutions]

Ah looking back, I think that was a video edit.

[@harrysas08]

@@MangoJellySolutions thanks

[@JansthcirlU]

It's unfortunate that you have to animate all the constituents parts yourself, it would've been nice if it were like in Inventor where all the part interactions are calculated automatically.

[@MangoJellySolutions]

It's a weak area for FreeCAD and I really hope that a Develoer somewhere will fill the gap. Like you I am used to other applications that apply these automatically.

[@Mooskislide]

@@MangoJellySolutions Do you have any examples of programs that apply collisions automatically? Solidworks perhaps?

[@antoninperbosc1532]

@@Mooskislide I looking for the same on free software usable with python probably -> openscad i found this www.thingiverse.com/thing:2978555