- Видео 4
- Просмотров 147 455
Precision Engineering, University of Twente
Добавлен 21 окт 2012
T-Flex: Compliant Flexure-based Large Range Precision Hexapod
The T-Flex is a motion stage hexapod for precision manipulation. It achieves a large range of motion and a high repeatability by using custom designed flexure joints. The T-Flex has been developed at the Precision Engineering lab (prof.dr.ir. Dannis Brouwer).
Details can be found in the following publications in Elsevier's Precision Engineering journal:
- Naves et al. 2021. "T-Flex: A fully flexure-based large range of motion precision hexapod".
doi.org/10.1016/j.precisioneng.2021.08.015
- Naves et al. 2020. "Flexure-based 60 degrees stroke actuator suspension for a high torque iron core motor".
doi.org/10.1016/j.precisioneng.2020.02.001
- Naves et al. 2019. "Large stroke high off-axis stiffne...
Details can be found in the following publications in Elsevier's Precision Engineering journal:
- Naves et al. 2021. "T-Flex: A fully flexure-based large range of motion precision hexapod".
doi.org/10.1016/j.precisioneng.2021.08.015
- Naves et al. 2020. "Flexure-based 60 degrees stroke actuator suspension for a high torque iron core motor".
doi.org/10.1016/j.precisioneng.2020.02.001
- Naves et al. 2019. "Large stroke high off-axis stiffne...
Просмотров: 43 887
Видео
Brief look at T-Flex flexure-based hexapod for large range of motion
Просмотров 7 тыс.3 года назад
Some lab footage of the T-Flex precision hexapod (2021). See the new film (2022) on: ruclips.net/video/tenxq7N5q3k/видео.html For a fully flexure-based hexapod (compliant mechanism), it can achieve an unprecedented large range of motion and a high repeatability. Details can be found in the PhD thesis of Mark Naves: "Design and optimization of large stroke flexure mechanisms", University of Twen...
World's First Beer Opening Compliant Mechanism
Просмотров 4 тыс.3 года назад
The world's first beer opening compliant mechanism. A mechanism that violates many precision design principles. It features 3D printing, gold, buckled leafsprings, too much pivot shift, a compliant frame, overconstraints, Comic Sans, a movie trailer voiceover, and loud noises. As is tradition in our lab, upon receiving the PhD title, the new doctor receives a highly technical and needlessly com...
Flexure Joints for Large Range of Motion
Просмотров 92 тыс.7 лет назад
Research by the PE lab at the University of Twente: www.utwente.nl/en/et/ms3/research-chairs/pe/#pe-lab Below are some references: M. Naves, D.M. Brouwer, R.G.K.M. Aarts, Building block based spatial topology synthesis method for large stroke flexure hinges, ASME robotics and mechanisms, accepted manuscript, doi: 10.1115/1.4036223. Naves M, Aarts RGKM, Brouwer DM (2017) “Large stroke three degr...
a truly amazing application of compliant mechanisms! congratulations
Woah tsmc
Supremely based
I thought it was 100 microns at first but I just realized it was 100 nanometers😂 Absolutely insane!
dit kan ook alleen in twente😂
It's hard to believe if Flexure joints will be able to apply very high forces needed in aerospace, manufacturing, motion simulators and other applications you are showing.
Utterly impressive
Where are the 6DOF ? I saw only 3. The final manipulated object can move only up/down, left/right, front/back. It can’t revolve around x,y and z axis, or can it ?
In the beginning you can see it rotating
In the beginning you can see it rotating
In the beginning you can see it rotating
In the beginning you can see it rotating
In the beginning you can see it rotating
Hexapodia is clearly the key insight.
What is the maximum dynamic load in kilogram!?
No way 200mm dynamic range and Sub micron repeatability!?😱😳🤯
Right? This is honestly insane
Shut up and take my money ! 😍
Is this mostly mechanical engineering?
4:45 tit-anium lmao, I didnt know it is a metal, its rather soft
It's repeatability is mind-blowing. What was it's repeatability under max load?
OH ITS A FINGER
What is the purpose of the outside plate of the revolute joint?
Counterweight probably
I was waiting him to drop the retro-encabulator in his presentation.
Halfway through the video the language gets very plate processing and residue plate funneling
May I ask, what software you use for animation and video production?
The magic of flexures!
How does the sub-micron repeatability work under load, when using flexable joints?
Impressive. I wonder, what is the repeatability in variable load conditions. Like in the mentioned assembly or milling applications.
@eblman5218 The Parallel Axis Tripteron Concept" by Rudmin may have the same motion range, but it is full of linear ball bearings and rotating ball bearings. All these bearings have friction, play, backlash and cause rumble due to the imperfect bearing surfaces, Also, The upper arms of the Tripteron carry bending loads, while the upper arms in this video only carry pure tension/compression loads. In other words, the precision and repeatability of the Tripteron are no match for those of this flexure-based mechanism. Additionally: the Tripteron has only TxTyTz translational freedom, while the flex concept has all six DOF's: TxTyTz and RxRyRz.
Flexapod
where can I find more info about 5:05?
Congratulations team UTwente... Prachtig...
hell yea dude, could stick a radar on there
Very cool, big props to whoever designed this.
Excellent work!
I was doing some thinking about flexure joints when I happened across a wall hanging device for large flat screen TVs. It is designed to swing out from the wall, and tilt, while remaining stiff in the "Z" axis. They sell millions of them. At first glance it looked like a perfect application for a flexure system. But polymer materials have low yield strengths. The ceaseless pull of gravity on the swing arm would rapidly deform flexible plastics. Although the joint itself would be theoretically "stiff" in Z, the entire apparatus would quickly sag down the wall unless the flexures were made from something like spring steel, which would defeat the cost savings from using monolithic polymer construction.
Polymers usually also experience creep. So that would also disqualify it as good materials for flexures.
How do polymers handle static loads over a long duration, for example years?
Polymers are commonly used in the initial phase of designing and printing flexures. The actual joints manufactured in the end are using steel or aluminium 7075. 3D printing metal is also an option but does comprimise some of the material benefits. But just for the record all the polymer use is because of rapid prototyping. There is alot of potential geometries to explore.
I can't wait to see what the future holds when you guys decide to finally share the software
Why don't flexure mechanisms get deformed quickly?
they are designed to not push materials into plastic deformation and use materials with high elongation
very epic
flextures are cool
Now that's an expensive sim rig.....
dude, there are at least 50 parts.... that is NOT a complaint mechanism. however it is COOL...
A compliant mechanism just means that it has bendy things, it doesn't necessarily mean it's simple
@@JasminUwU yeah, but you could build this from max 2 pieces. you want to use bendy parts to reduce the total number of parts, not increase. the springs on my car are bendy... so you say i can make a video just show my car and say : "a compliant mechanism"....
@@frankthiele6539 but your car has gears, so it wouldn't a pure compliant mechanism. Maybe make your own can opener design that is simpler than this if you can.
@@frankthiele6539coil and leaf spring are compliant mechanism bushing is compliant mechanism even the frame itself is compliant mechanism
one part =/= compliant mechanism
4:45 - how they make this Support Trees? I would like to learn more about that
Those are dissolvable support structures made of PVA (polyvinyl alcohol - water-soluble filament). Such technology is possible with dual-extrusion FDM printers.
Amazing!
XD
Nice!
Repeatability is possible. But the non-linearity is even visible to the eye.
How does it matter, wouldn't feedback loop take care of that ?
@@baronvode9962 However, it is not an optical ruler with micrometer resolution. It is an encoder with a resolution of 0.1 degree angle.
Nice!
Looks amazing. Is it a concept/prototype, or is it going to be actually used for something? It's relatively small, right? How much does the whole thing weigh? :)
Bravo, very cool research indeed! :)
optimally we will optimize this optimization.
An incredible video. Thank you for making and sharing!
5:10 🍆
I've never heard so many buzzwords in my life, Liz Lemon would be proud.
I had to check to see if it was a joke or parody lol, seemed like Turbo Encabulator
Take a shot every time you hear "optimum" or "topology"
5:03 flex dildo?
*Affordable* then proceeds to use PVA filament Jokes aside this stuff is absolutley crazy cool and has so many applications.