Center hole punching tool

The utility model discloses a center hole punching tool which comprises a magnet part, a pressing rod is arranged at the front end of the magnet part, and the pressing rod is rotationally connected with the magnet part in the axial direction. The longitudinal adjusting part is fixedly connected with one end, far away from the pressing rod, of the magnet part; the guide rail is fixedly connected with one end, far away from the magnet part, of the longitudinal adjusting part; the sliding block is in sliding fit with the guide rail; the hand drill is fixedly arranged below the sliding block; one end of the sliding block driving assembly is connected with the guide rail, the other end of the sliding block driving assembly is connected with the sliding block, and the sliding block driving assembly is used for driving the sliding block to move on the guide rail. The shaft part punching device can drill center holes of shaft parts without a lathe, can be adjusted to adapt to punching of shaft parts with different di