Clamping device for steel washer machining

The utility model discloses a clamping device for steel washer machining, which relates to the technical field of clamping devices and comprises a bottom plate, a waste box is fixedly connected to thebottom plate, mounting shells are fixedly connected to the bottom plate on two sides of the waste box, damping devices are arranged in the mounting shells, a mounting plate is arranged above the mounting shells, and threaded rods are arranged in the mounting plates. A threaded rod is arranged on the bottom plate, a sliding block is sleeved with the threaded rod in a threaded mode, a supporting frame is fixedly connected to the sliding block, a semicircular clamping piece is fixedly connected to one side of the supporting frame, a stop rod is rotatably connected to the supporting frame, hydraulic telescopic rods are fixedly connected to the two sides of the bottom of the bottom plate, protective pads are arranged at the bottoms of the hydraulic telescopic rods, and holding rods are fixedlyconnected to the two side