This device is a special welding device which welds and assembles the brake shoes with the automatic operation.The brake shoes are united the cresent web and circular arc flanges along outer of that with T type.The projection of several points is pressed out to the flange side, and T type projection is welded by using this.This device is set the web and the flange in the magazine with the index table beforehand, and supplied with each supply device automatically.Regarding the welding electrode jig fixture, the rotation jig fixture is put on lower platen, and 4 points are welded, divided into two portions while rotation the constant angle the lower electrode with works.An adoption of 3-phases rectifier system welding machine, and highly effective, steady welding can be done.