Industrial robot with a balancing device
AssigneeABB AB
InventorsChrister Lundstrom, Rafael Nissfolk
Life of this patent
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Abstract
Industrial robot arranged with a helical spring based balancing system, which is able to stand up to high load.
Claims15
Industrial robot (1) comprising a first robot part (3) and a second robot part (5) movably arranged relative each other and a balancing arrangement (8) operating between them, where the balancing arrangement (8) comprises a first attachment (12) and a second attachment (14) for an articulate fastening to the corresponding robot part (3, 6) and where the balancing arrangement (8) is arranged to counteract the attraction of gravity when the robot parts (3, 6) are pivoted, characterized in that the balancing arrangement (8) comprises a telescopic unit (9) connected to the respective attachment (12, 14) and a helical spring unit (10) arranged between a first spring seat (15) and a second spring seat (16) fixed on the telescopic unit (9).
Method of balancing an industrial robot (1) comprising a first robot part (3) and a second robot part (6) movably arranged relative each other and a balancing arrangement (8) operating between them, where the balancing arrangement (8) comprises a first attachment (12) and a second attachment (14) for an articulate fastening to the corresponding robot part (3, 6) and where the balancing arrangement is arranged to counteract the attraction of gravity when the robot parts (3, 6) are pivoted, characterized in that the balancing arrangement (8) is made to include a telescopic unit (9) connecting to the respective attachment (12, 14) and that a helical spring unit (10) is arranged between a first spring seat (15) fixed on the telescopic unit and a second spring seat (16).
Dependencies are inferred from the claim text.