Laser high-frequency precision control system and method for selective field-assisted machining

Abstract

The invention belongs to the field of ultra-precision machining, and discloses a laser high-frequency precision control system and method for selective field-assisted machining. The control system includes: a material identification unit, a data processing unit and a fast-response laser control unit; and a material identification unit It is used to identify brittle particles and soft metal substrates of composite materials; the data processing unit is used to process the identified materials and output switching signals; the fast response laser control unit is used to control whether the laser emitting unit emits laser beams according to the switching signals. The fast-response laser control unit includes an electro-optical modulator, through which the on-off of the laser generator is controlled to achieve the purpose of selective field-assisted machining, which can be used to process soft metal substrates in ordinary diamond cutting and in-situ laser-assisted machining to cut brittle particles High-frequency precise and fast switching between them. The invention can realize high-efficiency and high-quality high-frequency precise laser control, and can perform selective field-assisted processing on composite materials.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision machining, and more particularly, relates to a laser high-frequency precision control system and method for selective field-assisted machining. Background technique [0002] Composite materials represented by aluminum-based silicon carbide, silicon-aluminum alloy, etc., are composed of soft metal matrix and brittle particles (silicon, silicon carbide, etc.), and have excellent optical, mechanical, physical and chemical properties and are widely used in aerospace. Carriers, heat sinks and auto parts. However, composite materials are difficult-to-machine materials. Since the matrix is ​​a soft metal material, with high ductility and low melting point, it is very easy to generate built-up edge during the cutting process, which will reduce the quality of the machined surface, and the internal brittle particles will cause During the machining process, the tool wear is very serious, which serio...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a laser high-frequency precision control system and method for selective field-assisted processing, aiming to solve the problem that the processing of composite materials in the prior art cannot quickly identify different substrates and cause processing Problems of low efficiency and low machining accuracy

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