Tool for polishing metal ingot

The utility model discloses a tool for polishing a metal ingot, and belongs to the field of metal casting machining. The tool for polishing the metal ingot comprises a placing frame, a polishing machine is connected to the placing frame, a polishing disc is connected to the driving end of the polishing machine, and the tool further comprises a placing plate rotationally connected to the placing frame; the first inner cavity is formed in the placing plate; the first sliding plug is connected into the first inner cavity in a sliding manner; the screw rod is fixedly connected to the first sliding plug; the pressing groove is formed in the placing plate; the pressing plate is rotationally connected into the pressing groove; the screw rod is in threaded connection with the pressing plate; a first magnet is fixedly connected into the pressing groove, a second magnet is fixedly connected to the side wall of the pressing plate, and the first magnet and the second magnet attract each other. The metal casting is clampe