The IRIM LAB laboratory in South Korea recently shared a very flexible robot chassis with variable four wheels, which combines the advantages of various structures of wheeled robots and McNamee wheels.
In order to drive the arm, the designers used the Tendon-driven design, which mimics muscles and tendons by using materials such as “threads” and plastic to achieve a bionic bionic of a living organism’s limbs.
At the same time, the designers of the entire robot drive are concentrated in the robot’s shoulder, the mass is roughly distributed to a single arm weight of 6.8kg, of which 4.17kg shoulder joints, other joints 2.63kg, which better reduce the inertia of the end of the robot arm actuator, so it gives it a lot of color fast.
The elbow part has only one degree of freedom of pitch, which is achieved through the “tendon” (line) driven by the shoulder actuator.
We shared a nimble drive component in the seventh issue of the “Mechanical Design and Mechanical Engineering Collection” motion picture, and this nimble component is actually used at the wrist of the LIMS2-AMBIDEX.
The final idea of this chassis should be installed on the experimental LIMS2 humanoid two-armed robot.
LIMS2-AMBIDEX is not a wooden stake, this is its hand speed
Overall size and joint freedom arrangement of LIMS2-AMBIDEX
Finally, let’s look at the details of the study, the hands.
IRIM Lab also has several products for hand research. The first look at a new generation of robotic hand they designed, FLLEX, improved grip of the robot hand, the end of the video demonstrates the robot hand holding a hammer to knock nails.
Perfect simulation of the human hand, fingers can be broken at random and immediately recovered, the general force of the blow can also withstand, stronger than the real hand impact resistance.
Biomimicry of biological limbs
Look at the IRIM Lab Lab another under-driven mechanical gripper – BLT gripper. This gripper has 3 fingers and 5 individually controllable motors, which can realize the free and smooth switching between pinching and grasping states, as flexible as a human hand.
This gripper has a simple and ingenious structure with 3 fingers and 5 individually controllable degrees of freedom, which can realize the free, smooth switching of two states by pinching and grasping.
The manipulator fingers use the outer rigid structure as the gripping drive, the inner flexible belt structure as the gripping interaction, so as to achieve the pinching of the fingertip part and the inner side of the finger with adaptive uniform gripping pressure distribution grip.
The inner side of the flexible band has less friction, which allows the object to slide along the band, allowing the grasped object to be easily switched from the pinching state to the grasping state.
Drive unit design of the mechanical claw hand
According to the researcher’s test, the maximum gripping force per finger of BLT gripper can reach 6kg, and the overall gripping load of the gripper can reach 15kg.
LIMS2-AMBIDEX robot shooting practice.
Looking all the way down, is it a general understanding of the robot research of IRIM Lab in Korea, for the research of new structures and the development of components step by step steadily, every detail is doing its best to be excellent, its biggest feature is the drive, if the development of materials in the future ushered in a big explosion, this will be the closest to the human robot.
After Japan Honda’s ASIMO and Boston Dynamics’ Atlas, a powerful humanoid robot will be on the horizon again.
Of course, according to the development of ASIMO and Atlas, the ultimate combination of the degree of the market to have a longer-term future, IRIM Lab Korea is undoubtedly well aware of this, each design at the same time will take into account practical applications and commercialization and other factors to achieve the most optimal design.
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