Crankshaft repairing and grinding machine

The utility model discloses a crankshaft repairing and grinding machine, which belongs to the field of crankshaft repairing and comprises a fixing groove, a sliding block is slidably connected in the fixing groove, a clamping component is arranged at the upper end of the sliding block and comprises a limiting bolt, a turntable, a rotating shaft, a crankshaft body and a fixing plate, and a rotating rod is rotatably connected between locking plates. A grabbing assembly is arranged on the surface of the rotating rod and comprises a two-way bolt, a clamping box, a winding pipe, a mechanical arm and a mechanical gripper, the clamping assembly, the grabbing assembly, the forward and reverse rotation motor and the polishing motor are arranged, the function of automatically carrying a crankshaft to the workbench is achieved, meanwhile, the functions of clamping, fixing and polishing the crankshaft are achieved, and the crankshaft polishing efficiency is improved. And by arranging a clamping box, a stabilizing plate,