Automobile steel ring grinding machine

The utility model relates to the technical field of automobile steel ring machining, in particular to an automobile steel ring grinding machine which comprises a base and a support which are integrally connected, a first motor and a plate body are fixedly installed on the base and the support respectively, a rotating shaft is fixedly connected to the output end of the first motor, and a containing table used for containing an automobile steel ring is integrally connected to the rotating shaft. A sleeve corresponding to a center hole of the automobile steel ring is integrally connected to the containing table. According to the polishing device, the sleeve is arranged in the center hole of the automobile steel ring in a sleeving mode, then the limiting plate can abut against the inner wall of the center hole of the automobile steel ring under traction of the limiting rod through driving of the second motor, the limiting plate can limit the automobile steel rings of different specifications, and therefore the ad