Corner grinding device for sheet metal workpiece machining

The utility model discloses a corner polishing device for sheet metal workpiece machining, which comprises a polishing table, a case is mounted on the top surface of the polishing table close to one side, a polishing sheet is mounted on one side of the case, an adjusting groove is formed in the top surface of the polishing table, a turntable is mounted in the adjusting groove, a support plate is mounted on the top surface of the turntable, and a support plate is mounted on the top surface of the support plate. A clamping mechanism is installed on the outer side of the supporting plate and comprises a first clamping plate and a second clamping plate, two sleeves are installed on the portion, close to the bottom end, of the front face of the first clamping plate, four connecting plates are installed on the inner side of the second clamping plate, and a moving rod is installed between the two connecting plates. The corner grinding device for metal plate workpiece machining is provided with a structure for conven