Middle hole and seat surface pneumatic grinder with automatic oil injection nozzle

The utility model relates to a middle hole and seat surface pneumatic grinder with an automatic oil injection nozzle, which comprises a grinder body. A middle hole grinding frame and a seat surface grinding frame are respectively arranged on the front side and the rear side of the grinder body, wherein the middle hole grinding frame is used for grinding a middle hole and finishing roughly grinding the middle hole and finely grinding the middle hole, and the seat surface grinding frame is used for grinding the seat surface and finishing roughly grinding the seat surface and finely grinding the seat surface; an oscillating and sliding table is arranged below the middle hole grinding frame and the seat surface grinding frame; and a V-shaped positioning block after being subjected to surface treatment by adopting electroplating emery is arranged on the rear side of the oscillating and sliding table. The middle hole seat surface pneumatic grinder has the beneficial effects that through respectively arranging the t