Patent ID: 8704111
Filing Date: 2014-04-22
Classification: B25J

Abstract:
1. A robot hand with a weight measurement function, that is attached to a robot arm and that has a function of measuring a weight of an object that is held by suction, the robot hand comprising: a measurement instrument that is attached to a distal end of a distal shaft of the robot arm and measures the weight of the object; a hollow shaft unit that is attached to a distal end of the measurement instrument coaxially with the distal shaft of the robot arm; a suction unit that is attached to a distal end of the hollow shaft unit and holds the object by suction; a hollow member that surrounds the hollow shaft unit in a circumferential direction, the hollow member and the hollow shaft unit configured such that the hollow member can rotate and move up and down relative to the hollow shaft unit; a hollow member connecting unit that extends from a casing supporting the distal shaft of the robot arm and is connected to the hollow member; and a suction unit drive unit that is connected to the hollow member in a position corresponding to a peripheral surface of the hollow shaft unit and drives the suction unit, wherein the suction unit drive unit communicates with an inner space of the hollow shaft unit through at least one opening that is formed in the peripheral surface of the hollow shaft unit.