Superfinishing device based on grinding equipment

The utility model relates to the technical field of superfinishing, and discloses a superfinishing device based on polishing equipment, which comprises a fixed rod, a rolling shaft and a roller, the tail end of the fixed rod is fixedly connected with a sliding block, the back of the sliding block is fixedly connected with a spring, a shock absorber is sleeved in the spring, the sliding block is connected with a sliding chute in a sliding fit manner, and the rolling shaft is fixedly connected with the roller. A sliding groove is formed in the side face of the rolling shaft, the sliding groove penetrates through the two side faces of the rolling shaft and extends to the outside, and a sliding block is connected into the sliding groove in a sliding fit mode. The roller is arranged, pressing force is applied to the surface of the roller through the elastic force of the spring, straightening of the roller is assisted, compared with rigid pressing of traditional equipment, the situation that the surface of the roll