The invention provides a curved surface
polishing device and a
polishing method thereof.The curved surface
polishing device is provided with a first platform and a second platform, the first platform and the second platform are oppositely arranged, and the first platform and the second platform are fixedly connected based on at least three hinge assemblies; a
grinding wheel driving part and an external controller are arranged on the surface, close to the first platform, of the second platform, the external controller is arranged above the
grinding wheel driving part, at least three
laser induction sensors and a
grinding wheel are arranged on the surface, away from the first platform, of the second platform, and the
laser induction sensors are arranged around the
grinding wheel. Further, the ground curved surface can be sensed in real
time based on the
dot matrix laser induction sensor, the controller controls stretching and retracting of the hinge
assembly in an online closed-loop mode, self-adaptive adjustment of the curved surface
contact angle is guaranteed, and the problems that
machining is difficult and quality is poor for different positions and different curvatures of the curved surface in a traditional grinding mode are solved; and meanwhile, universality of multiple
machining occasions is achieved, and the
machining precision is improved.