Shaft machining tool and shaft machining method

The invention discloses a shaft machining tool and a shaft machining method, and belongs to the field of machining. A reference block is coaxially sleeved on a shaft to be machined through a circularhole and are fixed to the shaft to be machined through a compressing structure. The reference surface on the reference block is positioning reference. When a machining knife machines the shaft to be machined, the feed direction of the machining knife is perpendicular to the reference surface and on a first plane. The machining knife takes the direction as the positioning standard to machine a slotstructure on the shaft to be machined, and the machining knife returns to the feed position. The shaft to be machined is controlled to rotate at a reference interval angle, and the reference intervalangle is an included angle between the first planes on two adjacent reference surfaces. The machining knife repeats machining (n-1) slot structures on the shaft to be machined. The reference intervalangle is the ideal interval