Roller edge polishing device

The utility model discloses a roller edge opening polishing device which comprises a platform, an angle grinder, a shaft I, supports II and a support III, V-shaped iron is arranged on the platform, the support I is arranged on the top face of the V-shaped iron, the shaft I penetrates through the support I, the shaft I can rotate in a hole of the support I, the two ends of the shaft I are respectively provided with one support II, and the support III is arranged on the support III. A shaft I and a shaft II are arranged between the supports II, a turnover frame is formed by the shaft I, the shaft II, the shaft III and the supports II, a fulcrum shaft is arranged on the outer side face of each support II, a motor is fixed to the fulcrum shaft, an output shaft of the motor is connected with a lead screw through a plum coupling, a nut is arranged on the lead screw, the supports III are installed on the shafts III, and the supports III are fixedly connected with the nuts. Polishing of edge opening transition curve