A method and a device for unbalance correction of rotors by applying corrective weights by welding

摘要

To correct an unbalance of rotors, a method and a device are provided by means of which a corrective weight 15 is adapted to be welded to a rotor 2 by means of an electric welding device 14. The device comprises a robot 20 with a jointed arm 21 mounting the electric welding device 14. Arranged within reach of the jointed arm 21 is an unbalance measuring station 1 for measuring the amount of unbalance of the rotor 2 with an electronic computer which computes a corrective weight 15 to be attached to the rotor 2 for unbalance correction and transmits control data to a control device 23 of the robot 20. Under robot control, the welding device 14 picks the computed corrective weight 15 from a magazine 27 arranged within reach of the jointed arm 21 and welds it to the rotor 2 in the unbalance measuring station 1. During the welding operation the rotor 2 takes support on a first supporting device 11 and the welding device 14 on a second supporting device 12.