Abstract
In this paper, we develop a three-fingered robotic hand fabricated by only using a 3D printer. This robotic hand uses series of gears to realize synergetic motions of the fingers. This robotic hand is controlled by RC servo motors and can realize multiple grasps using a small amount of motors. We combine several parts into one to reduce the number of parts and eliminate screws from the hand. This reduction of the parts and screws simplifies the assembly of the designed robotic hand without using tools. We execute some experiments to confirm that the robotic hand can realize the grasps.
