Patent ID: 9172290
Filing Date: 2015-10-27
Classification: H02K,Y10T

Abstract:
1. A method of correcting an unbalance on rotors in which at least one corrective weight is attached by welding to a wall of a rotor to be balanced via an electric welding device, with the corrective weight being pressed into contact during welding at a contact pressure produced by the welding device, comprising the following steps: attaching the electric welding device to a jointed arm of a robot, measuring, via an unbalance measuring station, the amount of unbalance of the rotor to be balanced, computing, via an electronic computer connected to the unbalance measuring station, the corrective weight to be applied to a selected area on the rotor for unbalance correction, supplying a computed corrective weight to a defined transfer position within reach of the jointed arm, moving the welding device via the robot to the transfer position and picking up the corrective weight computed for unbalance correction by the welding device, turning the rotor to a weld-on position and supporting the rotor in said weld-on position on a first supporting device acting in opposition to the contact pressure of the welding device, moving the welding device via the robot to the weld-on position on the rotor and supporting the welding device in the weld-on position on a second supporting device arranged adjacent to the rotor and acting in opposition to the reaction force of the contact pressure of the welding device, and firmly pressing and welding the corrective weight to the balancing position of the rotor selected for unbalance correction.