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MIT engineers use 3D printing to create origami inspired object grabber



The MIT Computer Science and Artificial Intelligence Laboratory (CSAIL) engineers used 3D printing to create a robotic device capable of catching a large number of objects.

The results of the study were published in A Vacuum Origami Magic Ball Soft Gripper

The author and Professor Robert Wyss of the Institute of Biomedical Engineering said: "One of the most important features of this approach to manipulator development is its simplicity. .

"The materials and manufacturing strategies used allow the rapid prototyping of new grips adapted to the object or environment.

  Origami inspired gripper with apple. Image via MIT
Origami inspired grip with apple. Image through MIT

Origami Magic Ball

In robotics, 3D printing proves a competent method for prototyping and producing fully functional devices. Recent examples of recent research by soft robots, modular robots and Wyss Institute for bio-inoculated robotic arm research have clearly highlighted this aspect.

The latest research was based on a previous team concept called Fluid-powered Origami-inspired material. Muscle (FOAM). The FOAM consists of a hermetic skin and a malleable frame structure that shrinks under negative pressure

The newly created magic ball gripper works on the same principle as the FOAM and inspired by the origami magic ball. The magic ball gripper has a smaller size, increased skin contraction, which increases the adhesion strength

  Origami magic. YouTube view.
Origami Magic. YouTube view.

Little help, please

Three different "magic ball" prototypes with different material and dimensions were produced. With Stratasys Fortus 400, the 3D research team printed molds to create a gripper. Two grabs were made of silicon rubber and one made of PET / PVC / Capton composite and TPU-coated nylon

Research co-author and MIT Professor Daniela Rus talked about his future vision for such robots. Russian said, "One of my moments is to create a robot that can automatically pack food for you."

Shuguang Li, a joint postdocas at MIT CSAIL and Harvard John Paulson School of Engineering and Applied Sciences (SEAS)), further explored: “Companies like Amazon and JD want to be able to pick a wider range of delicate or irregular objects, but not with fingers and suction cups ”[…]“ Suction cups cannot take anything with holes – and they will need something much stronger than a soft finger-based grab.

  3D printed sheets for origami gripper. Image via MIT.
3D printed castings for origami gripper. Image via MIT

Influenza

Grips were attached to the Baxter industrial robot and were tested using 3D print objects. These objects were attached to the Instron machine, so the weight of the object itself did not match the stress, tension, and pressure test

Objects from fruits such as grapes, mushrooms and coke bottles were lifted using a magic ball grab. It has been shown that the gripper can lift up to 2 kg

Russian explained: "Previous ways of packing could only handle very limited object classes – items that are very light, or items that fit forms like boxes and cylinders, but with The Magic Ball gripper system has shown that we can do a variety of tasks from wine bottles to broccoli, grapes and eggs. "

" In other words, objects that are heavy and objects that are bright. Objects that are subtle or firm, or have regular or free shapes. "

The study discussed in this article is titled "Vacuum Origami" Magic-Ball Soft Grip, published in 2019. Automation . The authors of this article are Shuguang Li, John J. Stampfli, Helen J. Xu, Elian Malkin, Evelin Villegas Diaz, Daniela Rus, Robert J. Wood.

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The themed view shows a "magic ball" grab with an apple. Image via MIT.


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