Engineers from Ajou University in Suwon, South Korea have developed a robotic hand that is extremely human-like, powerful enough to crush a can of water, and dexterous enough to use a pair of tweezers. It can be mounted on a commercial robotic arm and perform a variety of tasks.
The team says the hand has the potential to help in many areas, including electronics, by placing small computer chips on circuit boards with tweezers, a job that requires very high precision.
Previous robotic hands could only have high dexterity or strength, but the Korean team’s new hand can do both and it can also be easily attached. existing commercial robotic arms, instead of needing specialized arms.
“The application of the extremely complex operation of the human hand remains an unsolved challenge in robotics. In particular, human hand movements require a remarkably high degree of dexterity, suitable for performing a variety of tasks that require strong grip, from grasping objects to manipulating tools.,” said the researchers.
Of the 206 bones in the human body, 54 are in the hand, and the muscle structure that makes them up is extremely complex. To perform these functions using robots, many dexterous human-like robotic hands have been developed, but each has limitations, such as lack of mobility and lack of operating area.
Power grasping tests of the ILDA hand.
The Korean research team analyzed existing robotic hands, their pros and cons, and identified core criteria for their new hand.
They came to the conclusion that it is important to have the following superior features: dexterity, fingertip strength, controllability, durability, low cost, ease of maintenance and compactness.
The robotic hand, developed by Uikyum Kim and colleagues, is called ILDA, with 20 joints that move freely like a human hand and the hand comes with a fingertip that can generate a force of 34 Newtons, while still Flexible enough to cut a sheet of paper with scissors. The weight of this hand is only about 1kg and 21.5cm long. All components are integrated into the hand, allowing it to be brought up to any existing robotic arm.
Grasping various objects.
In a series of experiments, engineers demonstrated that the hand is capable of picking up objects of various shapes, gripping it strong enough to crush a can, holding 18kg weights, or gentle enough to hold a fruit. egg.
Cutting a paper using scissors
Handling small objects using tweezers
The device could be developed to be used as a prosthetic hand for humans, but Kim said it could also be used as an industrial robot thanks to its adaptive design, high performance and cost of production. short. In the future, Kim and colleagues hope to improve ILDA with tactile perception, greater flexibility, and possibly even artificial skin.
Whatever you do, don’t attach it to these people: