ROBOTICS | Measuring repeatability of a strain wave gear from Harmonic Drive

[@FlashDrive356]

It's insane how precise motors can be these days. Great work as usual!

[@OleksandrStepanenko]

Thanks!

[@stevenmcculloch5727]

The lighting is so good it looks like like a render

[@OleksandrStepanenko]

Thank you!

[@gatoninja4387]

is un model 3d???

[@stevenguevara3252]

Lmao for real… almost feels like it is. 😂

[@williamluong7743]

I don't think it's the lighting, I think it just looks too perfect lol

[@williamforbes6919]

This video is a phenomenal demonstration

[@OleksandrStepanenko]

Thank you so much, Matthew!

[@tooba6290]

Accidentally read it as phenomenal destruction 😬😂

[@navid9852]

Great demonstration. The music is pretty synched!

[@OleksandrStepanenko]

Thanks!

[@evanbarnes9984]

I just realized the indicator is reading micrometers rather than thousands of an inch, and my mind was even more fully exploded

[@OleksandrStepanenko]

Yes, that's truly mind-blowing precision!

[@tinymovr]

Amazing work as usual!

[@OleksandrStepanenko]

Thank you so much!!! 😊

[@kentvandervelden]

Maximum overshoot vs approach speed could demonstrate stiffness. Doesn't isolate the gear though.

[@lucianolizana446]

impresive

[@OleksandrStepanenko]

Thanks!

[@jnn01972]

Maybe you can expand on how is the motor controlled with a computer/microcontroller...

[@lordmemester8798]

i can't stop watching the last 8 seconds of the video

[@OleksandrStepanenko]

It really looks pretty good, thanks for sharing!

[@abdullahcakan]

eXcellent !!

[@DianiAmine]

Nice work, and your video is epic

[@OleksandrStepanenko]

Thank you, Diani!

[@OriginalJetForMe]

Wow!!

[@Scrogan]

Now come at the same location from the opposite direction so we can see the backlash! I imagine these gearboxes can have really low backlash, but seeing is believing. The other critical thing is how heavy they wear.

[@MrRedBuilder]

Being a harmonic drive, they have nearly none. With how they are built, the rotor attached to the motor actually completely locks the output in place

[@SusumoKakinotane]

What are the tech specs of the motor? do you have a link?

[@i-make-robots]

what's the model number of the strain wave gearbox?

[@dashs2597]

Definitely have to experiment more with harmonic drives. What did you think about cycloidal drives?

[@OleksandrStepanenko]

Never tried it, but I have a feeling that the strain wave gear is the only way to go...

[@valdaszs]

Just load end effector with compression and tension spring and you see all beauty :)

[@Derpuwolf]

Impressive stuff here.

[@OleksandrStepanenko]

Thanks!

[@ponlokhom6863]

what type of motor do you use? Sir

[@OleksandrStepanenko]

bldc

[@smd9600]

What types of motors are used ????

[@OleksandrStepanenko]

BLDC

[@capnthepeafarmer]

I can't remember, but are harmonic drives backlash free?

[@OleksandrStepanenko]

Yes

[@anthonywalker6168]

With a mechanical efficiency sub 90%, that’s their downfall in becoming the way, as opposed to an option amongst many.

[@user-jvhuvuyvjhgjhkjhkgkjhg]

amazing

[@OleksandrStepanenko]

Thanks!

[@gerryakbar]

But how about the gauge's repeatability

[@hillstudios]

way more repeatable than the motor

[@jakobholzner]

just gorgeous

[@OleksandrStepanenko]

Thank you, Jakob!

[@leonordin3052]

If only u did the other direction as well. Going into minus then back, stop at zero and to the start. For backlash measurment.

[@OleksandrStepanenko]

there is no backlash by design:)

[@leonordin3052]

How do you guys make these parts so good then. Is it lathe work mainly? ​@@OleksandrStepanenko

[@OleksandrStepanenko]

@@leonordin3052 those are Japanese gearheads, these guys know how to make them right:)

[@cry-wr4wt]

Jokes on you 'cause that micrometer doesn't go below 0 :D Jk, love your videos

[@OleksandrStepanenko]

Thanks!

[@devanshgarg31]

His videos are so Professional!!

[@OleksandrStepanenko]

Thank you, Devansh!

[@localhawk1]

Gravity might help here a litte bit ;). A confirmation on a vertical position would be interesting.

[@Chris-bg8mk]

Microns?

[@OleksandrStepanenko]

Yes.

[@gatoninja4387]

hooooo presicion imposible

[@shroomatic]

OMG.

[@santiagosalinasuy]

ok