Method of machining carbon-fibre composite material by combination of laser and machinery

Abstract

The invention relates to a method of machining a carbon-fibre composite material by combination of laser and machinery, and particularly relates to a method of machining a carbon-fibre composite material by combination of laser and mechanical cutting, and the method belongs to the laser and machining technology. The method adopts a laser generator as a laser source and selects machining parameters to achieve maximum knifing of single scanning. The parameters comprise power, focusing positions, single-scanning speed and times of single-scanning. A sample piece of the carbon-fibre composite material is subjected to crude machining of the needed geometrical characteristics by one scanning step or several scanning steps to achieve efficient removal of most of the material, heat affected zones and crude machining margins which are generated in the laser machining are removed in one time by the machining manner, and finally the high-quality efficient machining of the needed large-scale of geometrical characteristics for the sample piece of the carbon-fibre composite material is finished. The method effectively reduces the machinery machining load, reduces unavoidable tool wear and machining damage which are determined by the characteristics of the composite material, reduces machining dust, increases the machining efficiency and reduces the tool cost.

Description

technical field [0001] The invention belongs to laser and mechanical processing technology, in particular to a method for combining laser and mechanical cutting to process carbon fiber composite materials. Background technique [0002] Carbon fiber composite materials have the characteristics of high specific strength, high specific stiffness, fatigue resistance, corrosion resistance, etc., and have been widely used in the aerospace field, which can effectively reduce the structural weight. In its application, there are a large number of cutting processes to ensure the accuracy of components, as well as hole making processes and cutting processes for connection and assembly, so as to meet various connection and assembly functions. In many processes, the processing of carbon fiber composite parts and components is mainly realized through mechanical processing, including a large number of drilling, milling and grinding of geometric features such as main connection positions, w...

AI Technical Summary

Problems solved by technology

[0005] Beneficial effects of the present invention: for large-thickness carbon fiber composite material samples, a large amount of removal can be achieved in a single pass, and the removal can be quickly scanned multiple times to ensure the processing speed while effectively reducing the heat-affected zone produced by laser processing; Under the premise of keeping the heat-affected zone as small as possible, most materials can be removed quickly and efficiently, which greatly reduces the amount of machining, and solves the problem that machining must consume high-cost tools to obtain efficient and high-quality machining

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