Coaxial press-fitting machine for assembling front axle master pin

The utility model relates to the technical field of press-fitting machines, in particular to a coaxial press-fitting machine for assembling a front axle master pin, which comprises a C-shaped frame, a press-fitting oil cylinder is arranged on an upper frame of the C-shaped frame, a pressing die core is in threaded connection with the end of a piston rod of the press-fitting oil cylinder, and the pressing die core is coaxial with the piston rod of the press-fitting oil cylinder. The lower frame of the C-shaped frame is provided with a pressing die coaxial with the press-fitting oil cylinder, the pressing die is connected with a core rod in a sliding mode, and the core rod outwards abuts against a plurality of workpieces penetrating through the core rod and a shaft hole of the pressing die through tensioning of the core rod. According to the utility model, the outward tension of the core rod can be utilized to enable the core rod to be matched with a plurality of shaft holes through which the core rod penetrate