Rapid clamping device

The utility model discloses a rapid clamping device, and belongs to the technical field of guide roller machining. A rapid clamping device comprises a machining table and a guide roller, clamping parts are symmetrically arranged on the machining table, and the guide roller is located on the two clamping parts. According to the guide roller clamping device, the air rod stretches out and draws back to drive the clamping component to clamp and release the guide roller, the clamping block makes contact with the guide roller and rotates to be oppositely attached to the surface of the guide roller under the action of pressure, therefore, the guide rollers with different diameters are clamped and fixed, the application range of guide roller clamping is widened, and the clamping efficiency is improved. The problem that guide rollers with different diameters need to be replaced with matched clamps is solved, the working efficiency of guide roller machining is further improved, friction force between the clamps and the