To demonstrate a new approach to making compatible, controllable robotic structures, the researchers constructed a 3D model of rabbits, tuna, and starfish that can be folded independently. These structures are immersed in hot water and folded from a flat form.
In the past few years, more and more people have begun to pay attention to robots with self-built functions. This feature is very useful when you need to make high-precision robots. You will find that many robots are now software-compatible and compatible.
Of course, we might think that software robots are suitable for 3D printing, but in reality, they are usually made of highly deformable materials that can be changed by their own behavior rather than by special molding. Of course, the mold is A tedious and annoying thing.
Cynthia Sung was previously a member of the Daniela Rus team at the Massachusetts Institute of Technology and is now a professor at the University of Pennsylvania. On Tuesday, at the Robotics and Automation Conference (ICRA), he demonstrated a new approach to making compatible and controllable robotic structures, and called it an additional self-folding technique.
Inspired by origami manuals, the technology can create 3D shapes using 2D materials with self-folding, and all you have to do is put them in hot water.
Basically, you need to design a 3D model of an object first, then use software to transform the object into many different layers, and each layer needs to be associated with the corresponding upper layer and the next layer, but it must have Fold the flap a little. Once you have all the designs ready, you can use an vinyl cutter to print on a polyester film and a “sandwich†of polyvinyl chloride.
Before folding, the first thing you might get is a long, thin strip of cross-sections of the 3D object you are looking for, but once you put it in a boiling hot water, polychlorine Ethylene (PVC) is heated, and each part is shrunk, and then in just a few seconds, it becomes a pre-set shape.
Not only that, but the software has another feature that adds a so-called "antagonistic" to the design object (using the same raw material as the fishing line), the effect is that when one side is squashed, the other The side will be bounced to form a controlled curve.
These researchers used a self-adhesive folding solution to create a complete starfish model (figure a), which has a servo motor-controlled carcass that allows it to execute different clouds (bg below).
Researchers can also use the technology to design and build a very complex robotic starfish, each of which uses four screws to drive two dimensional clouds in its five legs (or five first strokes). It takes about 50 minutes to make each starfish's legs, and you really don't need to think too much about its range of motion. By combining the tendons, all the legs can be controlled by six steering gears, either clockwise or counterclockwise, and can also bend two or three legs in the combination up or down.
At this time, did you think of a different use case scenario? That's right! If you apply this solution to a five-finger manipulator instead of designing a starfish, it will be more useful.
Use this solution to make relatively complex robots, especially if you need to build robots that have limitations on weight and volume (such as making robots that are used in space exploration for spacecraft). It gets faster and it's easier.
Throw the software robot into the hot water, it can fold itself
All you have to do is carry some materials and cutters, then design the robots you need, even "squash" them and print them when you need them.
Of course, the most time-consuming part of the process may be to deal with the tendon part, which may require a manpower and take up about half of the manufacturing time. However, researchers are exploring solutions for embedding tendons in the manufacturing process, although this approach may make the entire process a bit more complicated, but it can significantly improve overall manufacturing speed.
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