Polishing die for precision hardware

The utility model relates to the technical field of polishing devices, in particular to a precision hardware polishing die which comprises a base and a bidirectional supporting column, a telescopic column is arranged at the end, away from the base, of the bidirectional supporting column, and a cleaning mechanism and a rotating column are arranged at the end, away from the bidirectional supporting column, of the telescopic column. A baffle shell is arranged at the end, away from the telescopic column, of the rotating column, a polishing rod is arranged in the baffle shell, a sieve plate is arranged at the end, close to the polishing rod, of the base, a plurality of fixing devices are arranged at the end, close to the polishing rod, of the sieve plate, and an air bellow is arranged at the end, away from the polishing rod, of the sieve plate; according to the hardware polishing device, the surface, needing to be polished, of hardware can be cleaned in the polishing process, the situation that the polishing effec