Turnout center grinding machine

The utility model is suitable for the technical field of grinding machines, and discloses a turnout junction grinding machine which comprises a bottom frame, supports are fixed to the two sides of the top end of the bottom frame, sliding rods are fixed to the two sides of the inner wall of each support, the sliding rods penetrate through the interior of a sliding shell, a rod plate is fixed to the outer wall of the sliding shell, and an outer shell is fixed to the inner wall of the sliding shell. A machine shell is arranged in the shell, a grinding machine is arranged in the machine shell, a grinding head is installed at the bottom of the grinding machine, sliding grooves are formed in the left side and the right side of the machine shell correspondingly, sliding blocks are arranged in the sliding grooves, the inner walls of the sliding blocks are fixedly in butt joint with the outer wall of the grinding machine, and first threaded grooves are formed in the middles of the two sides of the top end of the machi