High-precision center hole positioning device for steering knuckle

The invention relates to the technical field of steering knuckle machine tool machining, in particular to a steering knuckle high-precision center hole positioning device, a drilling machine is provided with telescopic drilling machines which are symmetrical in the length direction of the drilling machine, the drilling machine is provided with a clamp which is located between the two telescopic drilling machines and is symmetrical in the height direction of the drilling machine, and the clamp comprises a telescopic device, a ratchet strip and a clamping piece; the telescopic device is arranged on the drilling machine, a supporting piece is arranged at the output end of the telescopic device, the multiple ratchet strips are distributed in the length direction of the drilling machine at intervals, the ratchet strips and the supporting piece are elastically and slidably connected, the ratchet strips are provided with clamping jaws, the clamping jaws are in a V shape and used for clamping the shaft portion of the