Round hoop machining device

The circular hoop machining device comprises a base, a convex plate is fixedly installed at the top of the base, a U-shaped plate is fixedly installed at the top of the convex plate, a sliding plate is connected into the U-shaped plate in a sliding mode, and a V-shaped sliding groove is formed in the top of the sliding plate; an operator uses pliers to take a clamp and place the clamp between two clamping plates, meanwhile, an electric telescopic rod is started to push a sliding plate, the sliding plate slides in a U-shaped plate, rhombic sliding blocks are linked to slide in a V-shaped sliding groove, the two rhombic sliding blocks get close to each other, and meanwhile a first sliding block is driven to slide forwards in a first sliding groove; according to the clamping device, the electric telescopic rod is arranged on the base and drives the two supporting plates to get close to each other, so that the clamping plate shrinks inwards, clamps with different diameters can be clamped and fixed by adjusting th