Through getting rid of short- circuit ring copper layer on faces of two ends of motor,increasing copper thi- ckness on face of circular of rotor,it is also stability to hold maximum torque constance to simplify copper plating technology.

• 去掉转子两端面的短路环铜层,而略增转子圆周表面的铜层厚度,仍能保持最大力矩值不变,从而简化镀铜工艺。