The utility model discloses an automobile parts's cutting device, including the water storage shell, the top of water storage shell is fixed with the cavity mount pad, and the top of cavity mount padis fixed with one side open -ended safety cover, the inboard of safety cover is equipped with the installation shell, and installs the shell and inlay the dress and fix at the top of cavity mount pad,the inside of installation shell is fixed with the fixed column, and the outside of fixed column rotates and to have cup jointed the rolling disc, the top of rolling disc be equipped with with the fixed driving motor of fixed column, and a driving motor's output shaft is fixed with bevel gear, the bevel gear meshing is connected with the gear ring that cup joints in the fixed column outside. Theutility model discloses a cooperation of a driving motor, bevel gear, gear ring, rolling disc, bracing piece, spiral shell rasp bar, guide bar, connecting block, the 2nd driving motor and pneumatic cylinder isotructure is used for the cutting main part possess a plurality of degrees of freedom, and then makes the cutting more nimble, and the cutting pattern is more.