3d Printed Cycloidal Drive for Robot Arms

Designing and building a 3d Printed 20:1 cycloidal reducer / actuator to increase the torque from a stepper motor.

These are the supplies i used:

[PaulGouldRobotics]

Nice design. Adding bearings around the inner pins should increase efficiency too.

[username]

Amazing how much force this can generate without breaking any plastic!
Looking forward to the continuation videos of you building the robot arm.

[pdee]

I'm starting to fall in love with mechatronics after seeing how this works. I'm only used to CAD/CAM/WebGL programming.

[JulianMakes]

Just wonderful! I’d also love a robotic camera person! I’ll be having a go at the add on later today, thanks loads!

[TheRealStructurer]

Like your build, how you explained it (right level and speed) and the fact you engage with viewers 👍🏼 Subscribed and looking forward to the next video

[PhG]

Waw, impressive. A bigger one... well of course ! Size does matter !

[swannschilling]

Super nice, I was actually also planning to mount a camera to my arm, but the vibration that you see on the first axis translates down the arm and amplifies! My arm moves quiet smooth, but for your project you might also look into belted or pulley transmission as they are a lot smoother than cycloidal gearboxes....although I am really in love with cycloidal drives! 😇

[adsalesmanguy]

You can make a waving arm with on of these. You’d put it at the arm base near the torso. You would have to make a hand and fit it in on the metal beam thing you had to carry the weight and you could use the same program to make a waving arm.

[peterhenson]

Innovative. Awesome job! and great video. no fluff about your channel just straight to the heart of robotics. Great stuff man! The cycloidal drive was something I had never seen before. Thanks for sharing!

[danh]

This is so awesome!!! Thank you for sharing this.

[GWAStech]

Wow mam! This is so insane! Amazing! Great job! 😁👍

[mbRg]

Nice video! It bugs me how you didn't put the set screw on the flat side of the shaft haha

[CoolerQ]

I... really want to go and try to build one of these myself. Instant like + subscribe so I can follow along! I hope the design gets open-sourced at some point.

[mrteemug]

I'm getting big Atomic shrimp vibes and I like it. Subbed and liked, I want to see that robotic arm.

[rondlh]

You can clamp some metal part, like a pulley, to the stepper axis to create more surface area. The stepper force should be the limitation, not the plastic...

[dekutree]

Fatten up that ring and you'll get a lot more torque before it flexes out of shape. Usually cycloidals have the ring outer diameter around 1.3x the ring pin circle diameter.

[DiffEQ]

4:01 Why wouldn't you put the set screw on the flat of the shaft? No only is there more material there, but you have much more contact to prevent slippage since the flat become a fulcrum point.

[janibizjak]

it is pretty fu*king impresive, kudos to you! thank you for explanation!!!

[JimMaz]

Nice channel. It's gonna get big.

[brunobock]

I had the same problem with the motor attachment on a different gearbox. Whenever we get into heavier loads with 30 printed parts this can happen very quickly. Especially with PLA