Metal surface polishing equipment

The utility model discloses metal surface polishing equipment which comprises a polishing box body, the polishing box body mainly comprises a box body and a polishing machine arranged in the box body, a box door capable of opening or closing the box body is arranged on the side wall of the box body in a hinged mode, and a supporting table is arranged in the box body. A containing groove used for containing a to-be-polished workpiece is formed in the middle of the supporting table, a set of limiting mechanisms used for fixing the to-be-polished workpiece is arranged at the position, corresponding to the containing groove, of the supporting table, and a vacuum suction cup mechanism capable of pulling the to-be-polished workpiece to move front and back is arranged on the side, opposite to the box door, of the box body. The grinding machine mainly comprises a grinding sheet and a driving motor for driving the grinding sheet to rotate; the driving motor is arranged in the box body through a displacement mechanism