Machining device and method based on optical decentration system for centering vehicle lens cone

The invention discloses a machining device and method thereof based on an optical decentration system for centering a vehicle lens cone. According to the machining device and method thereof, a three-jaw chuck, a universal chuck, the optical decentration measuring system and the like are comprehensively used for lens group machining equipment; a horizontal lathe is installed on the left side of the optical decentration system and is connected to a lathe tool device and the optical decentration system through a lead screw; a lens group is fixed on the horizontal lathe through the universal chuck and the three-jaw chuck, and the position and the inclination angle of the lens group are adjusted through the universal chuck; the position of the lens group is adjusted through the eccentric value of the lens group obtained by the optical decentration measuring system, and the lathe machines the lens cone through the eccentric value; and the lens cone is machined through the lathe by utilizing the optical decentration