Although there are now some robotic hands that can grasp objects, it is usually not possible to change the orientation of the object being held. in hand without releasing it. However, a new robotic hand can do so through its rolling fingers.
Developed by scientists from Spain’s University of Malaga and UK’s University of London, the Rolling Fingers hand is made up of three articulated fingers that grasp objects by closing in on them from three sides – as the fingers do so, they will bend to match the object. border.
Each part of each finger incorporates a rubber grip surface, which can be rotated left or right relative to the underlying structure. Thus, by simultaneously rotating all those surfaces in the same direction, it is possible to rotate an object in the hand and still retain its grip.
Needless to say, round objects work best. That said, the fingers can move in and out to accommodate irregularly shaped objects as they rotate.
A four-finger model is currently being built. It is hoped that the technology could eventually be used in applications such as the transportation and inspection of fresh produce.
Professor Jesús M. Gómez of U Malaga said: “With at least three fingers providing two active degrees of freedom (grasp and pivot), we were able to create robotic grips capable of moving objects. subject in a controlled manner in one hold,” said Professor Jesús M. Gómez of U Malaga. author of an article on hand.
That article was recently published in the journal IEEE Robotics and Automation Letters.
Source: University of Malaga via AlphaGalileo