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Direct coupling type water-jet guided laser coupling system and method

A coupling system and direct-coupled technology, applied in the field of direct-coupled water-guided laser coupling systems, can solve the deviation of the coaxiality between the laser spot and the red light, which is not conducive to reducing the size and weight of the device, and is not conducive to the laser and water fiber. Focusing and other problems, to achieve the effect of simplifying the laser alignment operation, convenient disassembly and assembly, and reducing the difficulty of alignment

Pending Publication Date: 2021-05-11
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The error of manual judgment is large, and the requirements for operators are high
The cost of CCD technology is high, and the coaxiality between the laser spot and the red light will deviate
[0006] In conventional water-guided laser coupling devices, the optical window mostly adopts cylindrical lenses, which are not conducive to the focusing of the laser and the center of the water optical fiber, and the large volume of cylindrical lenses is not conducive to reducing the volume and weight of the device

Method used

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  • Direct coupling type water-jet guided laser coupling system and method
  • Direct coupling type water-jet guided laser coupling system and method

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Embodiment 1

[0037] A direct-coupled water-conducting laser coupling system described in this embodiment, as attached figure 1 As shown, its main body includes a light transmission cavity 1 , a lens fixing cavity 2 , a nozzle holder 3 , a three-axis optical moving platform 4 , a laser collimation system 5 , a ball lens 6 , a nozzle 8 , and a nozzle cover 9 .

[0038] The optical transmission cavity 1, the lens fixed cavity 2, and the nozzle holder body 3 are vertically stacked coaxially from top to bottom to form a cylindrical coupling cavity, and the optical transmission cavity 1, the lens fixed cavity 2, and the nozzle holder body 3 are provided A plurality of installation holes, the installation holes are located close to the outer edge of the cylindrical coupling cavity, the screws pass through the light transmission cavity 1, the lens fixing cavity 2 in turn, and are screwed to the nozzle holder body 3. The cross-section of the optical transmission chamber 1 is a T-shaped structure, t...

Embodiment 2

[0046] In this embodiment, the difference from Embodiment 1 is that the hemispherical lens 6 is adopted, and the hemispherical lens 6 is a cylindrical upper part and a hemispherical bottom structure, and the shape of the curved lens groove matches the hemispherical lens 6, as shown in figure 2 shown. The spherical surface at the bottom of the hemispherical lens 6 passes through the bottom surface of the lens fixing cavity 2, and the passing distance is less than the spherical radius.

[0047] A direct-coupled water-guided laser coupling method, based on the direct-coupled water-guided laser coupling system described in the above-mentioned embodiment 1 and embodiment 2, the coupling method includes the following steps:

[0048] S1: Turn on the laser collimation system 5 to emit the laser downward, observe the color-changing coating 12 composed of photochromic material above the nozzle 8 and the nozzle cover 9, and judge the position of the laser spot through the color-changing...

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Abstract

The invention provides a direct coupling type water-jet guided laser coupling system and method. The system comprises a light transmission cavity, a lens fixing cavity and a nozzle support body which are sequentially, coaxially and fixedly connected from top to bottom; the top end of a light path through hole of the light transmission cavity is fixedly provided with a laser alignment system through a three-axis optical moving platform; an arc-shaped lens groove in which a spherical lens or a hemispherical lens can be placed and positioned is formed in the middle butt joint surface of the lens fixing cavity and the light transmission cavity; and a nozzle is locked on a boss in the middle of the nozzle support body through a nozzle cover, and the top end of the nozzle is exposed and coated with a photochromic material capable of changing color under laser irradiation. According to the direct coupling type water-jet guided laser coupling system and method, the alignment operation of a laser beam and the center of the nozzle can be simplified, the coupling condition of the laser beam and the nozzle can be accurately judged, and the advantages that the nozzle can be assembled and disassembled, and the sealing performance is good are achieved.

Description

technical field [0001] The invention relates to the technical field of water-guided laser coupling, in particular to a direct-coupled water-guided laser coupling system and method. Background technique [0002] Laser processing is a processing technology that uses the characteristics of the interaction between high-energy laser beams and substances to rapidly melt, vaporize or chemically degrade the workpiece through the photothermal effect. Laser processing has the characteristics of no contact, no cutting force, small thermal influence, and high processing accuracy. It has good application value in processing materials with high melting point, high hardness, and high brittleness. It is currently widely used in automobiles, electronics, aviation, Machinery manufacturing and other industries. [0003] Water-guided laser processing is an advanced processing technology that uses a micro-water jet to guide the laser beam to the surface of the workpiece to be processed. Guide ...

Claims

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Application Information

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IPC IPC(8): B23K26/046B23K26/14B23K26/142
CPCB23K26/14B23K26/142B23K26/046B23K26/1436
Inventor 龙芋宏周辽黄宇星焦辉黄平梁恩张光辉张振杰何丽华
Owner GUILIN UNIV OF ELECTRONIC TECH
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