Chain wheel polishing mechanism capable of fixing chain wheel

The utility model discloses a chain wheel polishing mechanism capable of fixing a chain wheel, which comprises a base, a first motor and a threaded rod, and the threaded rod is provided with a polishing mechanism for fixing the chain wheel during polishing. According to the chain wheel polishing machine, firstly, the distance between the two rotating rod clamping arms is adjusted through the bidirectional telescopic rod to fix a chain wheel body, then the threaded rod is started to rotate through the first motor, and the fixed chain wheel body is moved into the polishing machine body to be polished; a second motor is started to drive a rotating rod clamping arm to rotate so as to rotatably polish a chain wheel body, the clamped part cannot be polished in the polishing process, an electric telescopic table is lifted to make contact with the chain wheel body, meanwhile, a bidirectional telescopic rod is started to unfold the two rotating rod clamping arms, and the chain wheel body is polished. And after the cla