Laser drilling device and laser drilling method suitable for CFRP

Abstract

The present invention discloses a laser drilling apparatus and a laser drilling method suitable for CFRP, the laser drilling apparatus comprising: a holding device capable of reliably holding a CFRP plate to be processed; the laser beam source device is used for providing a high-speed spinning initial laser beam; and the optical system can split the initial laser beam into a first laser beam and a second laser beam which are equal in energy, and can set the first laser beam and the second laser beam to be projected to the same to-be-formed hole in the CFRP plate from the opposite sides of the CFRP plate held on the holding device. According to the laser drilling device and the laser drilling method suitable for the CFRP, the laser drilling device and the laser drilling method can be suitable for carrying out laser drilling machining on holes with the large machining depth or the large depth-diameter ratio, the taper problem caused by drilling is avoided or at least relieved, and the drilling machining efficiency and the machining quality are improved; and the hole forming quality, the economical efficiency and the applicability of the laser machining hole forming technology are improved.

Description

technical field [0001] The invention relates to laser processing of carbon fiber composite materials (full name is Carbon Fiber Reinforced Plastic, abbreviated as CFRP), in particular to a laser hole-making device and a laser hole-making method suitable for CFRP. Background technique [0002] Carbon fiber composite material is a composite material with resin as matrix and carbon fiber as reinforcement. Because of its high strength, good rigidity and small specific gravity, it has more and more extensive applications in the fields of aviation industry and automobile manufacturing. When using traditional machining tools such as tool cutting and drilling to process CFRP, there will be prominent problems such as rapid tool wear, delamination of the hole wall, tearing of the hole edge, and serious environmental pollution. These problems seriously restrict the application of CFRP. [0003] Laser processing is one of the special processing methods that use high-energy beams to remo...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the existing laser drilling processing technology that can be applied to CFRP, which is easy to produce taper problems when processing holes with a large processing depth or a relatively large depth diameter, so the hole processing efficiency and Defects of poor quality, a new laser hole making device and laser hole making method suitable for CFRP are proposed

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