Special turning and grinding composite machine for automobile steering arm bracket

The utility model relates to the technical field of automobile steering arm support machining, in particular to an automobile steering arm support turning and grinding composite special machine which comprises a base, two symmetrically-arranged second supports are fixedly connected to the outer wall of the top of the base, and first guide rails are fixedly connected to the outer walls of the tops of the two second supports. The outer walls of the tops of the two first guide rails are both slidably connected with first guide blocks, the outer walls of the tops of the two first guide blocks are fixedly connected with a supporting base, two rectangular grooves are formed in the outer wall of one side of the supporting base, and the inner walls of one sides of the two rectangular grooves are slidably connected with a quenching assembly. The third motor works to drive the second lead screw to rotate, so that the supporting base moves, when the signal intensity of the pressure sensor is maximum, the coaxiality of t