Ship stern shaft boring device

The invention relates to the technical field of ship machining, and discloses a ship stern shaft boring device which comprises a boring rod, a boring cutter mechanism and a driving mechanism. The boring cutter mechanism is arranged on the boring rod and comprises a boring cutter, a driving part and a lifting assembly, the boring cutter is installed on the lifting assembly, and the output end of the driving part is in transmission connection with the lifting assembly and used for driving the lifting assembly to ascend and descend so as to adjust the feed amount of the boring cutter. The driving mechanism is in transmission connection with the boring rod and used for driving the boring rod to rotate so as to drive the boring cutter to rotate to bore the stern shaft tube. Compared with a method for manually adjusting the feed amount of the boring cutter in the prior art, the ship stern shaft boring device has the advantages that the feed amount of the boring cutter can be adjusted by controlling the driving piec