直流弧焊机长期使用后,炭刷会把换向器磨出沟槽。修复时,需将焊机转子抽出,车去沟槽。这样,工作量大,修理周期长,而且加工后同心度难以保证,使焊机运转时炭刷跳动而加速换向器的磨损和影响正常发电。为了解决这一难题,我们采用了如下整体修复方法。修理方法:以焊机自转为切削动力,焊机自身原有旋转轴为基准(见图示),从而达到了整体加工和保证同心度目的。首先取下焊机两端防尘罩和炭刷防尘 After long-term use of DC arc welding machine, carbon brush will commutate grinding groove. Repair, the rotor should be pulled out of the car to go to the trench. In this way, heavy workload, long repair cycle, and difficult to guarantee the concentricity after processing, so that when the operation of the brakes carbon brush beating and accelerate the commutator wear and affect normal power generation. In order to solve this problem, we adopted the following overall repair method. Repair method: the welding machine rotation to cutting power, the original welding machine itself as the rotating axis (see the picture), so as to achieve the overall processing and to ensure concentricity. First remove the dust cover both ends of the welder and carbon brush dust