DIY Cycloidal Laser-Cut All-Metal Robotic Actuator: Durable!

We make a powerful robotic actuator based on a cycloidal gear made of metal laser-cut parts. At the end of the video we test it for maximum speed and torque.
The cycloidal wheel generator has beeen taken from:
EASY CYCLOIDAL GEAR WHEEL GENERATOR by [e-mail]
grabcad.com/li...

[@lowen74s]

Good to see someone else doing interesting designs with flat laser cut parts (the offset crank) where machining isn't feasible or possible.

[@RaionB3D]

Great job! Do not forget to lubricate the mechanics.

[@SzymonKowalski87]

I am very pleased that my work, after so many years, still helps create great things. Great invention. Share it ;)

[@HOXrobotics]

Thanks for the cycloidal wheel generator, it was very helpful!!

[@HarveyChen253]

Hi this is Harvey from PCBWay, we really like your work and would love to do some collab with you!

[@HOXrobotics]

It would be nice! my mail is [e-mail]

[@MrMtbdirtstreet]

Very nice! The cycloids look durable, but I think the mounting of the motor should be better. Only those 4 bolts on the housing keep everything in place. That would also help with positioning the motor for coaxiality. Great work, subscribed!

[@익명-n5d]

LOL!! Nice work with laser cut. Simple but strong design. Please share more info

[@Jayjlow]

To improve accuracy, how about getting the holes cut slightly smaller, then using a reamer to ream out the holes to final dimensions? Also, using shoulder bolts instead of using all thread bolts?

[@HOXrobotics]

Good suggestions, I will consider them in next builds, thanks!

[@edgarroblesnajar6992]

It would be nice to see a backlash test: by the way, very nice project

[@PhG1961]

Excellent! Metal laser cut parts are indeed the best choice! Maybe expand the drive for more torque?!

[@dhruvbose8294]

You placed that actuator dangerously close to the laptop during testing lol

[@TheCuriousOrbs]

Woudnt want to destroy tat $100 laptop

[@alexnaourmatus1344]

Gracias por compartir tu tiempo y conosimiento en forma altruista

[@MrTomtebloss]

Fun project! but two things really grinds my gears. First of you used no lubrication at all, and secondly you use the heads of bolts as the transfer from the motor and the gearbox witch is a bold move to say the least.

[@HOXrobotics]

There should be no friction, the cycloidal gears only touch the roller bearings, the eccentric shaft bearings and the output shaft bearings. But you are right, it would be good to put some lubrication

[@kindaovermyhead]

I was just trying to do something like this, nice work! Awesome to see what goes into making it from another perspective.

[@seanmcdonald656]

Great video. Thank you for sharing this.

[@JesseSchoch]

Thanks for sharing this! But, normalize your audio in post!!! hard to hear you.

[@adolphtrudeau]

That is an awesome build and I think I understand cycloidal gears better now. Wouldn't the motor get hot in the box? Will the gearset need lubrication and lube separation from the motor?

[@HOXrobotics]

There should be no friction, the cycloidal gears only touch the roller bearings, the eccentric shaft bearings and the output shaft bearings. But you are right, it would be good to put some solid lubrication. If motor gets hot I could open some slits, or even put a small fan

[@berberger4814]

9:42 20kg at this angle are not 20kg perpendicular to the output axis, so either you need to calculate the torque with a shorter distance between motor axis and mount point of the spring

[@Jim_One-wl4ke]

thats an awesome design. Compact & strong. Useful as actuators 👍. Thanks for sharing ❤

[@aymankidwany8119]

Very nice, well done What is the ratio of the gearbox

[@HOXrobotics]

Ratio is 11:1

[@swannschilling474]

My god!! This is a beast!!! 😁

[@ds-k7878]

8:43 백드라이브 가능한 구조네. 신기하다

[@moses5407]

Any idea why the backdrivability isn't smooth?

[@federico6b]

Maybe it’s too tight and friction add up to the whole resistive torque due to gearbox and motor inertia, try to avoid friction

[@moses5407]

@@federico6b Thanks. I'll try this design and add some lubricant. Great work!

[@HOXrobotics]

Maybe it is too tight, and probably the positions of the roller axes are not as accurate as they should be, due to manufacturing errors

[@nityamcncservices7073]

please help me in making cycgear.SLDPRT file with 11 teeths. i could not make it.

[@HOXrobotics]

The video shows the settings in the Excel file for 11 teeth. Depending on the size of your wheel, make sure the holes for the inner shafts and central shaft are not too big, and it should work

[@mred3867]

great work HOX Best i,ve seen yet,👍 did it have much back lash?

[@HOXrobotics]

Thanks, it has a quite small backlash, but still noticeable. I would say less than one deegree.

[@ekstrapolatoraproksymujacy412]

śruby nie mogą mieć gwintu w miejscach gdzie stykają się z elementami które przenoszą na nie obciążenia

[@MrNoipe]

Very impressive! Btw the link in the description doesn't work.

[@HOXrobotics]

Fixed, thanks

[@demidrol5660]

PEEK 3d-printed assembly like this should be much less noisy

[@HOXrobotics]

Probably, but the idea was to make and test a full-metal gear to see if it was feasible

[@Taygetea]

you dont even need PEEK, some of the nylons would be sufficient, and also printable on a bambu x1c. 3dxtech has a MoS2 infused nylon that i like a lot and intend to do this with, called WearX.

[@Tgspartnership]

love this design

[@scienceraven1200]

What was the motor?

[@HOXrobotics]

Eagle Power EA95 motor