Multi-rotating-mirror laser scanning processing system and method

The invention discloses a multi-rotating-mirror laser scanning machining system and method. The system comprises a light beam deflection device, a reflecting mirror, a driving motor and a rotating mirror array, the rotating mirror array comprises a plurality of laser rotating mirrors sharing the same rotating shaft, and the rotating angles of the laser rotating mirrors relative to the rotating shaft are different; the rotating shaft is connected with a driving motor; the light beam deflection device deflects an incident laser beam to the reflecting mirror, and the reflecting mirror reflects the laser beam to the rotating laser rotating mirror; and when the laser beam is about to be in contact with the corner angle of the laser rotating mirror, the light beam deflection device adjusts the deflection angle, so that the laser beam is reflected to the other laser rotating mirror. According to the technical scheme, the problems of low energy utilization rate and easy heat accumulation at the corner angle of the la