| 摘要 |
PROBLEM TO BE SOLVED: To provide an industrial robot hand device including a grasping device, which maintains the grasping force when it is required to shut off the power being supplied to the grasping device, for example, in the case where the power supply is down, in the event of emergency stop, or any failure being sensed by a control system, and is free of the risk of dropping a workpiece when it is grasped. SOLUTION: When a servo motor 3 fitted with brake is actuated, a ball screw 2 rotates, and fingers 4 swing to open and close. When the other end of each finger 4 is closed by a certain angle prescribed, the current to the servo motor 3 with brake is shut off to stop the servo motor 3, and brake is applied while it is pushed by a spring, out of illustration, and thereafter an air cylinder 22 is actuated so that the other ends of the fingers 4 lock the workpiece 41. COPYRIGHT: (C)2008,JPO&INPIT
|
