Three-dimension laser fine machining system and method for crisp and hard materials

Abstract

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.

Description

technical field [0001] The invention relates to a three-dimensional laser fine processing system and method for brittle and hard materials, belonging to the technical field of laser processing. Background technique [0002] Brittle and hard materials such as ceramics and their composite materials, refractory metals and alloys, and intermetallic compounds are widely used in aerospace, energy, and high-end equipment fields. Brittle and hard materials have high hardness, high brittleness, and difficult processing. Traditional machinery Cutting processing methods can no longer meet the processing needs of diverse and high-precision parts. [0003] With the rapid development of laser processing technology, laser, as a non-contact and efficient processing method, has broad application prospects in the field of material processing. Laser processing has become a A tool for processing various engineering materials. At present, for brittle and hard materials, there are mainly two so...

AI Technical Summary

Problems solved by technology

However, whether short-wavelength or ultrafast lasers are used, the average power of existing lasers is relatively low

Images