Steering knuckle arm structure and machining method

The invention discloses a steering knuckle arm structure and a machining method, and relates to the technical field of automobile accessory machining process design. According to the technical scheme, a steering knuckle arm is innovated in structure, namely, a boss is additionally arranged at an arm body blank of the steering knuckle arm, a center hole is machined in the center of the boss, and the center hole is machined in the center of the boss; and then another central hole is machined in the shaft end face of the threaded shaft, so that the two central holes are coaxial. Then a lathe ejector pin abuts against the two center holes at the same time, the cone shaft and the shaft end threads are turned, the cone shaft is used for positioning, a semicircular key groove, a pin hole, the two side faces of a cone hole and the cone hole are machined, and by means of the scheme, optimization of the machining technology is greatly promoted. The overall strength of the steering knuckle arm is not affected by overall