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A laser beam modulation method and system for processing fiber materials

A technology of laser beam and modulation method, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as thermal influence, achieve the effects of reducing thermal damage, improving drilling efficiency, and ensuring processing quality

Active Publication Date: 2022-04-19
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be seen that an effective laser beam modulation scheme has not been proposed in the prior art to solve the problem of thermal influence in the laser drilling process of fiber materials; Laser processing method for thermal damage problem

Method used

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  • A laser beam modulation method and system for processing fiber materials
  • A laser beam modulation method and system for processing fiber materials
  • A laser beam modulation method and system for processing fiber materials

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Embodiment Construction

[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] like figure 1 As shown, this embodiment provides a laser drilling system for fiber materials, the drilling system sequentially includes along the laser beam propagation path:

[0041] a laser 1 for generating a laser beam;

[0042] Beam expander 2, used to increase the diameter of the laser spot;

[0043] A wave plate 3, used to adjust the linear polarization angle of the laser beam emitted by the laser 1;

[0044]Polarizing beam splitter 4, used to eliminate the vertically...

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Abstract

The invention discloses a laser beam modulation method and system for processing fiber materials. The modulation system includes: a laser for generating a laser beam; a beam expander for increasing the diameter of the laser spot; a wave plate for It is used to adjust the linear polarization angle of the laser beam; the polarization beam splitter is used to eliminate the vertical polarization component in the laser beam; the spatial light modulator is used to adjust the shape distribution and energy distribution of the laser processing area, so that the outer ring has low energy and the inner ring High-energy circular processing area; optical 4f system, which filters and images the laser beam; focusing component, used to focus the multi-beam laser to form multiple spots; computer, used to adjust the parameters of the laser output laser beam and control the spatial light The modulator adjusts the morphology distribution and energy distribution of the laser processing area.

Description

technical field [0001] The invention belongs to the technical field of laser beam modulation, and in particular relates to a laser beam modulation method and system for processing fiber materials. Background technique [0002] Aramid fiber is a composite material based on reinforced resin, which is widely used in aerospace manufacturing because of its high strength, high modulus, low density, high temperature resistance and corrosion resistance. However, aramid fiber is a typical difficult-to-process material, which has problems such as good toughness and difficulty in cutting. [0003] The large amount of heat generated by mechanical drilling to cut aramid fiber material will cause the resin to melt and bond to the machined surface of the workpiece and the drilling tool, resulting in poor hole quality and severe tool wear when drilling aramid fiber , Low drilling efficiency. [0004] When long-pulse laser and continuous laser are used for laser drilling of aramid fiber, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/402B23K26/382B23K26/064
CPCB23K26/402B23K26/382B23K26/064B23K26/0648B23K26/0643B23K2103/16
Inventor 章鹏刘顿成健杨奇彪袁文兵金聪
Owner HUBEI UNIV OF TECH