The invention provides a three-dimension
laser fine
machining system and method for crisp and hard materials. The method comprises the steps that a
laser scanning
machining scheme according to the model of a to-be-machined part, the model of a
machining pattern and the machining requirements, specifically, the scheme comprises the process of determining the
laser machining parameters and the process of determining the number of machining
layers; scanning filling schemes corresponding to the machining
layers are made in the pattern filling area; the laser focus is adjusted dynamically in the
machining process, light spots are made to keep focusing in each machining position, and focus spots are uniform and coincident; the
laser scanning filling schemes are changed every time one or more
layers of materials are scanned and removed; and after one or more layers are scanned in the pattern filling area, laser contour scanning is conducted in the pattern contour area one or more times. The three-dimension laser fine
machining system and method for the crisp and hard materials can achieve high-precision and efficient machining of the crisp and hard materials by making full use of the various advantages of fine
light spot laser scanning machining.