Petroleum drilling bit polishing device

The utility model discloses a petroleum drilling bit polishing device which comprises a polishing cabinet containing polishing liquid, an operation box is installed on a shell of the polishing cabinet, an end cover is arranged above the polishing cabinet, a power distribution box is installed in the center of the top of the end cover, and a power connector is electrically connected to a shell of the power distribution box. The petroleum drilling bit polishing device comprises a polishing cabinet, a power distribution box is arranged below the polishing cabinet, the two sides of the power distribution box are each provided with a connecting rod fixedly connected with external hoisting equipment, a vibration exciter is installed on the side edge of the polishing cabinet, an electromagnet electrically connected with the power distribution box is arranged below an end cover, and a plurality of to-be-polished drill bits are attracted to the lower portion of the electromagnet. The drill bit can be subjected to all-