Quenching mold core eccentric hole machining method and mold core

The invention relates to a quenching mold core eccentric hole machining method and a mold core, and the method comprises the following steps: 1, roughly machining a mold core blank, reserving a lengthened head at the head of the mold core, and punching a center hole; 2, the eccentric hole is machined through a deep hole drill, and then quenching heat treatment is conducted; 3, after heat treatment, a self-made plug in interference fit with the eccentric hole is adopted to block the eccentric hole, and a center hole is drilled in the center of the outer circle of the plug again; and 4, the outer circle grinds center holes in the two ends of the mold core, and the outer circle of the mold core is subjected to finish machining to the size. 5, a bench worker marks a line to drill out a plug on the eccentric hole; in the axial direction of the mold core, the end face of one side is provided with a mold, and the end face of the other side is provided with an eccentric hole; according to the machining method, the pr