The invention relates to a shaft
processing method, which comprises the following specific steps of: inserting the lower end of a thin-
diameter segment of a shaft into a cylindrical groove, and starting a finger air cylinder to clamp and fix the shaft; driving a second electric pushing rod to enable the lower end surfaces of the clamping fingers of the finger air cylinder and a
quenching water tank to keep a distance of 10-30 cm; starting a first electric pushing rod to enable a top plate to downwards move to drive an
induction coil to downwards move, inserting the shaft into the
induction coil to enable the lower end surface of the
induction coil and the upper end surface of the clamping fingers of the finger air cylinder to keep a distance of 0.5-4 cm; injecting cooling water into the circulation hole of the induction coil to circularly cool the induction coil, starting a high-frequency low-
voltage big-current power supply to provide high-frequency low-
voltage big current for the induction coil, carrying out
induction heating on the shaft, and controlling time to be 2-5 minutes; and after the shaft is finished being heated, starting the finger air cylinder to open the clamping fingers, and enabling the shaft to fall into the
quenching water tank from a gap between two clamping fingers. According to the shaft
processing method, the problem in a shaft
thermal treatment processthat a junction between a circumferential side surface of a thick-
diameter segment and a transition platform is molten so as to change the
processing shape and size of the shaft is solved.