Diamond arc supporting structure of bearing outer ring superfinishing machine

The utility model discloses a bearing outer ring superfinishing machine diamond arc supporting structure which comprises a supporting plate and at least two sliding supporting blocks, the sliding supporting blocks are installed on the same side face of the supporting plate in a sliding mode, the supporting plate is bent in the plane of the supporting plate, and all the sliding supporting blocks stretch out of the inner side edge of the supporting plate. A diamond supporting block is further embedded in the sliding supporting block and extends out of the sliding supporting block, and the end face of the extending end of the diamond supporting block is in an arc shape. According to the diamond arc supporting structure of the bearing outer ring superfinishing machine, hard alloy in contact with the bearing outer ring is replaced by the diamond supporting block, and the side face, in contact with the bearing, of the diamond supporting block is arranged to be the arc-shaped end face matched with the bearing outer