【Full HD】ABENICS: Active Ball Joint Mechanism With Three-DoF Based on Spherical Gear Meshings 

How does your comment have more likes than mine... Ffs

@@VroomTech yours was rational. People like soap opera. Next time complain about the world and appeal to mom.

the presentation on this is a piece of art ;) taking notes for future projects

@@VroomTech Really? You're bickering over someone with a difference of 100 likes? 🤦‍♂️

Reddit

Yes i agree 10000%

Something should be inherently satisfying. Simple machines coming together to create a complex mechanism that performs smoothly.

i worked for a couple of years in a factory that assembles linear robots, i just love this kind of stuff with all the thought going into this to cramp as much moving part into such a small space :D

Maybe without the music

Thats the difference between motion graphics and CAD modeling for robotics lol

It's a useless device, the motors/manipulators take up too much space and the patterns on the ball and gears (if made with steel) would require extremely cost prohibitive machining. Some kids in college made it to flex their intellect but its actual applications in the real world are 0. Otherwise they wouldn't be showing how this unpatented device works in such great detail.

​@@Fine_i_set_the_handlemaybe it has ONE use atleast because it seems like it's shoved up your arse

​@@Fine_i_set_the_handle🤡

Was thought of. Just no action. Same idea as the cars wheels in “I Robot”. I would say.

Was thought of. Just no action. Same idea as the cars wheels in “I Robot”. I would say.

Probably quaternions lmao

PhD level stuff going on here

@Bonny _ try inventing them for the first time ever lmao

@Bonny _ yea true

The maths is not quite bad, just inverse kinematics should be sufficient..

Noob

i don't know what that means but i agree

add another motor for 4 degrees of freedom

You seam to be smarter than me, i take it quite at face value but the basic seams to be simple gear movment, am i wrong?

@@MasterCookies the movements normal but the idea of knowing how to manipulate several movements to get the final output movement is whats dogshit, its a fuckload of maths and not very visualizable in terms of mathematics

I can only agree

Indeed. But useless tho.

Posting it like this wasn't brilliant. The CCP just got handed a blueprint. They'll ignore patents. And use it militarily.

@@kentgladden4316 Yeah technology is cool and all but have you considered CHINA?

@@AutoFirePad Not true. Imagine sticking this kind of drive on a 3D printer.

asking the real questions, ty

funnily enough, that was the first thing i thought of. Mobile Suit Testing

Sieg Zeon!

under rated comment

next video: psychic manipulation mechanism

Right? I watch one video about Pacific Rim and now YT decides to let me know that we're working on that sorta tech.

RU-vid knows us more than we do

I also reacted like that! I was like "how has no one thought about that in like 500 years??"

@red dunkey huh?

@@cirogarcia8958 Maybe they mean that it has been thought of, but kept a secret? Or that patent trolling is to blame?

@@cirogarcia8958 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XKBX0r3J-9Y.html

@@Sako--qx3sy ty - that was really great!

旧世代のボール式マウスですね

ボール式マウスはDriving moduleの部分が固定なので違いますね。3つの座標軸のうち2つしか検出できません。 と思うのですがどうなんでしょう。

と、思いきや、トラックボールなら確かに一緒かも?

the main issue with a mobile suit is actually how it is powered. People have crafted power suits but they then have Massive wires coming out the back so they can't move around much.

@@rrteppo thing is in Gundam all the wires are non existent or inside of the exoskeleton, which all lead to the pilot using it and such

@@rrteppo The power is needed in order to combine inertia with versatility. Improving strength-to-weight-ratios in all the electrical and mechanical parts could sort that out. So Graphene could probably do it.

I’ll one-up you. Graphene *will* be doing it once the draconian dynasties stops lobbying their pocket-scientists and politicians to file countless fallacious studies regarding the potential toxicity of graphene, and NCT more specifically.

@@rrteppo Just invent free energy lol

It probably doesn't actually know the angle each axis on the ball and calculates how much they will change depending on the speed, direction and angle of the driver gears and keeps track of that

@@cirogarcia8958 I agree with you completely. I work for a company designing and testing precision motion control systems, and while it would be possible, and not too difficult to use motors with built in rotary encoders, the lack of encoder wires coming from the motors show these are running in open-loop with no position feedback. If you had motors with encoders and pair each set of motors on an arm in standard XY configuration(the 2 motors would be offset 90°), then you could do the trig calculations to calculation the physical travel/rotation of the ball. Then interesting part comes on how you want to handle the second set of motors on the other arm. You could either do the pain in the ass over, complicated route, of having all 4 axis running in sync to handle each command if your software will allow it(I've done it on hexapod systems, and it is a lot of math and an absolute pain), or assign roles for specific axis. I'd probably have one arm handle the XY rotation, have one of the motors on the other arm handle the Z rotation(the X and Y will need to be set to slaves axis of Z to rotate when it does, while still following their own commands). The 4th motor on the arm with the Z axis, I would have running constant low current to always be opposing a primary axis to prevent the backlash issue seen at 4:35(the jerking at the start of the movement is the driving motor is shifting the contacting fact of the ball's gear). While this is a cool concept, the backlash issue inherent to this design rules this out for any precision work, and the low contact area because of the possible tooth width means that with any load added, you'll see wear become a more serious issue. With wear, you will increase your already existing backlash issue, and at worse, break a tooth or one of the rollers on the motors. This will not reliably be able to handle loads, and if a tooth or roller face breaks or shears off, the load attached will come crashing down. Also the fact there is no simple way to add electrical limits to a system like this, means that any programming mistakes with this will likely result in damages. TL;DR: Yes to you, and sadly no to the design... it is cool though.

You can try learn inverse kinematics

@@MinatoAsk "You could either do the pain in the ass over, complicated route, of having all 4 axis running in sync to handle each command if your software will allow it(I've done it on hexapod systems, and it is a lot of math and an absolute pain)," I was actually referring to IK there as it's the only way to run a hexapod system properly. But when there is only one rotational position you are controlling and all axis are at a set relative angle to each other, there's not much reason I see in trying to run IK. Plus I personally wouldn't trust IK in a situation like this for two reasons. Reason one is that this setup looks very prone to running into gimbal lock situations if you're not careful, and in precision systems, you don't want the system you be on the fly making alternate routes to free an axis is that situation. Reason 2 is that there is that with the arm attached, you have fairly defined physical limits that are not axis specific. On most systems with hardstops, you will have electrical or software limits that tell the stage, "stop you are about to go passed your safe limit and hit something". On this, you don't have electrical limits, and as the axis are always shifting orientation, software limits would be very difficult, and risk damaging the the system if something is missed. Plus as I stated in my previous comment, unless you sacrifice one axis to keep a slight opposing force to an axis, you will have unwanted backlash to deal with. While this wasn't really designed with precision in mind, that is just the priorities I have when looking at something like this. Even something not requiring very high levels of precision, like a simple parts picker on a PCB assembly system, that backlash and the wear the teeth will experience over time would make this a no-go in my book. This is just my opinion based on my experience, and the field I'm in. Others with a different background and priorities may look at this differently, but if everyone agreed on everything, the world would be a rather boring place.

@@Poptart133g very well written! Part of learning is learning the hard way first only to find there's easy way to do it, lol! I've deal with servo motor controls before and used IK, so yeah, maybe the alternative is better for this specific project

Art work 10/10 , Useful 2/10, Practicality in programing the servos 1/10, Price tag 0/10. Compacity vs force output 5/10. Number of components required to build the servo motion output 3/10. Something genius to make your friend jealous 9.5/10. Outsource ability of producing components 7/10. Precision of the output 4/10* because it could be better if not made of plastic. Over all video 8/10. Final score: 49.5/100

@@marc-antoinethebeautiful7714 Thank you for this beautiful analysis. I've been trying to wrap my head around it for a while and you nailed it.

Exactly I had the same idea bidirectional threads

I want to know this as well

@@lines1645 +1

its in the description ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-SL5OlY0LC3s.html

@@MommysGoodPuppy oh i think they just updated the description, but thanks pog

I thought this was the noise the machine made when it's in operation.

More like you can catch the info...

I would guess that it would be in a lubricant further down the track

If both drivers sat on the same plane then I believe that would be the case, however with both drivers mounted at a 90 degree angle then that singularity ceases to exist and also gives the joint a greater range of potential motion.

@@shieldcaptain54 the video even seems to go out of its way to demonstrate this at around 95s

I was just wondering what applications it could work for and prosthetics is an amazing one.

Tbf dual motor/input for single linear/rotary axis are very common in machines as it allows to counteract mechanical backlash of the axis as well as more power without having to resort to a larger motor. Multiple small input gears into one large gear also allows for a larger than normal gearing in a single gear stage as it has more teeth engaged splitting the force (generally its problematic to have a large gear ratio as the teeth strength starts to be a limiting factor).

@@exol511 indeed you are very right thank you for pointing that out to me.

prosthetic elbows is pretty obvious is it not? 360 degree rotation would actually give amputees MORE freedom of movement than with a normal arm (although unless you're building out of titanium then it will have much less strength to weight)

IF only they wouldn't of screwed up real bad with Fukushima.

I doubt it is too reliable for reasonable load. Viewing it perform with an arm and small load- it did seem like it skipped tooth a few times.

Are you "watching" this video in braille? I mean, you wrote that comment using a computer and that pretty much requires you to see it.

@@anteshell I think you hit reply on the wrong comment thread.

and it gets stuck every other motion.

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@@HaloWolf102 I think you're right. Don't know how that happened. :D

A big carpet of little bobbles to mesh with.

irobot

omni-directional wheels only need 2 dof, this is overkill

@@gralha_ my point still stands

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nt55lHeqfEw.html

Hell, it would be perfect to drive a whole giant robot-arm based full motion flight simulator! :D