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Mishin Machine
Приєднався 2 вер 2013
Sergey Mishin
3D printed robot arm wrist timing belt joint assembly
Assembly of my inversed timing belt differential robot wrist joint
ua-cam.com/video/jgyOXb1IKqw/v-deo.html
I used GT2 timing belts and NEMA 17 stepper motors.
ua-cam.com/video/jgyOXb1IKqw/v-deo.html
I used GT2 timing belts and NEMA 17 stepper motors.
Переглядів: 156 307
Відео
Inversed Timing Belt Differential Robot Joint
Переглядів 38 тис.2 роки тому
I had an idea to make a timing belt differential joint inspired by the video "Inversed Timing Belt transmission" of Gustav Olsson. It is compact, has no backlash, and backdrivable. It can be used on the robotic arm (wrist joint). It's my first version of this drive with 400mm GT2 timing belts, there is a ratio of 1.6 between the inversed roll pulley and the pitch pulley. I used openbuilds wheel...
4K Epic TV Tower demolished in Yekaterinburg / Снос телебашни в Екатеринбурге
Переглядів 2,5 тис.6 років тому
220m long massive incomplete TV tower demolished in Yekaterinburg, Russia. About this tower: ekbtower.tilda.ws/page2218614.html en.wikipedia.org/wiki/Yekaterinburg_TV_Tower
@MishinMachine what is the backlash like on it?
I love it❤
Hello ! Very Nice design ! Havé you some link where you Shared three cao or stl files ? I would be really happy to build one ! Thanks for reply !
Cool
can i get stl?
а зачем эта?
have you posted any 3D models, or are you open-sourcing any elements?
Im wondering the same thing, lol.
interesting concept with belts, but I would still leave noisy planetary gears instead. the belt contact with ring gear does not look very assuring 😊
It has about 6 solid contact points....taking in the fact that these are plastic gears...I would bet it's pretty strong for its purpose. I'm more worried about the wear of those belts in those extreme angles...
@@b03tz At the end you can see wear on the edge of the belt. And if all 6 points of belt contact mesh properly, it's either a miracle, or very careful design.
@@criznachhow would that be a miracle? If you design a GT2 gear, it would be obvious those teeth all align. Only problem is that the belt goes straight for a tiny bit that might pull on the teeth. The belt wear is a bigger issue I think!
@@b03tz Might? Definitely. Number of teeth on an arc is different than number of teeth on a straight line.
@@criznachfor sure for sure! And in that case I guess if he calculated the rollers so that exactly 1 or 2 teeth are “skipped” it would be quite amazing!
Can you tell me what parts are in there?
very smart
Interesting idea, keep it up!
El sonido del futuro
That belt drive system is weird! In a great way, though. It took me a while to figure out how the belt was wrapped around in there. It does not look over-strained either. Does the belt show signs of wear at the twist first?
Awesome design, extremely well done. The only thing I dont really like, is how the tensioner bolt is offset from the belt center, inducing a moment. Especially under higher loads this is likely going to be a point of failure (or at least cause reduced stiffness of the system under higher loads). Also I have heard stories of such 'inverse pulleys' not being able to cope very well with higher loads, with the belt detaching from the inside of the pulley. Still, I applaud the design, extremely compact.
would like to contact you
please send CAD files, thanks
super sleek. kanhaz CAD files pls? I want to make it.
Amazing work!
That is pretty primitive. The belts aren't designed to run while twisted like that, and they will wear out quickly.
Primitive is exactly what "prototype" means. It is meant to display the concept, not be perfectly reliable
@@DEFCON5307 the concept itself is what's flawed though.
The lifetime of belts will be reduced, but no one knows if that would be significant enough to invalidate the concept
You're primitive
@@gryn1s In commercial joints like in Kuka arms, the belts twist like this, but the length of the twist section is much longer. This creates a smaller ratio between the required outer length on a helix to the required center length of a straight line. Thereby reducing wear on the belts.
This is gorgeous.
Hello! Do you mind sharing the STEP file? I would love to build one! Thanks
Awesome
what printer did you used ?
It’s Artillery Sidewinder X1
Where is the blacks screw
nice design, special for diy 3d printed joints. I always prefer these belt solutions instead of 3d printed differantial gears because of the back-lash. But i can see no reduction. Your solution combined with an little gearbox will be perfect. I try myself another solution but i like yours much more: ua-cam.com/video/lETlrt934rU/v-deo.html
Lovely design .... nice printing
what printer did he used ?
@@mohibs83 no idea but looked sweet ...
Hi! i've sent you an insta dm.
Incredible nice design! differential motion is very intriguing. The 3 rollers for each axis in the bottom part, the belt is in a direct line towards the next idler, did you compensate this error in the circular ringgear? Or did you left error as is? (about 0.47 mm of error for 30mm of distance over a R50 circle)?
Thanks! Cool that you noticed that error👏 I accounted it in the code.
долгий,надоело смотреть ,палец вниз
Genius because you u put the black screw so we could see it turning
Добрый день.
Огонь! Где скачать проект?
very nice. are you going to share the files for it?
Dope project, I hope to see more videos
:-)
synchromesh cables would be way better than timing belts for this
I really like this. You put a lot of time and effort in this and it shows. New subscriber here. Can't wait to see more!
Thanks!
Not Bad. Im joking this is very good 👍
He's just flexing by cool screwdriver. :-D
It is cool!
ремни так долго не прослужат ... уже видно что края мохрятся
The edges fray because I use Openbuilds wheels which have only 6mm surface like the belts, so the inner pulley is also 6mm, so the belt chews in between. Typically pulleys are 1mm wider than the belt to prevent belts from fraying. Anyway, I agree that belts are not designed to bend over such a short distance. This project was testing an idea.
perfect 👍
Were did you get your screwdriver and screw gun 🤔
I left the links in the description
It looks like the belt is making poor contact with the internal ring gear. I bet more rollers with a smaller diameter would have better engagement.
Agree, I have some ideas for the next version
What is the power screwdriver you use?? Thats awesome
I left the links in the description
O projeto é muito bom. Gostaria de vê-lo terminado. Outra coisa, essas partes são impressas ? Está disponível pra compartilhar ?
French C’est vraiment magique. J’ai hâte de voir la suite! Partages tes fichiers ? Je suis exactement dans le cas où je veux faire un bras articulé pour caméra smartphone avec AI face tracking
Do you have plans to integrate it into a full arm and test? Could be pretty interesting to see.
Right now I'm just experimenting with joints, but maybe will design a full arm in the future
That belt design is awesome! It looks like a belt driven planetary
Well done! Post more please.