Steel bar derusting and polishing device

The invention discloses a steel bar derusting and polishing device which comprises a mounting frame, a positioning disc assembly arranged on the mounting frame, a clamping and polishing disc mechanism matched with the mounting frame for use and a driving disc assembly arranged between the positioning disc assembly and the clamping and polishing disc mechanism. A power input assembly used for driving the driving disc assembly to rotate is arranged in the mounting frame, and the power input assembly drives the driving disc assembly to rotate so as to achieve grinding and rust removal of the steel bars through the clamping grinding disc mechanism. According to the reinforcing steel bar polishing device, the power input assembly drives the driving disc assembly to rotate, the driving disc assembly rotates to drive the polishing sliding rods clamping the polishing disc mechanism to stretch out and draw back in the radial direction, polishing balls at the ends of the polishing sliding rods are matched with reinforc