Multi-light source, multi-function and multi-axis laser processing head and apparatus

A laser processing head and processing head technology, applied in metal processing equipment, laser welding equipment, welding equipment, etc., can solve the problems of incapable mass production, high cost of three-dimensional laser processing equipment, single application range, etc., to ensure the size and shape High precision, no local deformation of the core, and small heat-affected zone

Active Publication Date: 2017-04-19
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large differences in the optical properties and physical and chemical properties of the above-mentioned processing materials, there are different requirements for laser wavelength, waveform and power.
The existing technology can only use a single laser source, and it is difficult to achieve the purpose of precise processing of all the above materials
If one 3D laser processing equipment is used for one of the above precision processing applications, multiple 3D laser processing equipment with different laser wavelength light sources must be used to meet the above three application requirements, resulting in high cost of the developed 3D laser processing equipment. The application range is single and cannot be mass-produced

Method used

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  • Multi-light source, multi-function and multi-axis laser processing head and apparatus
  • Multi-light source, multi-function and multi-axis laser processing head and apparatus
  • Multi-light source, multi-function and multi-axis laser processing head and apparatus

Examples

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example 1

[0065] In the laser precision etching process of the surface pattern of typical aerospace parts, the material for making the pattern on the surface of the part is usually coated with a multi-layer structure of a metal film layer on the surface of the glass fiber composite material carrier, because the melting point and evaporation temperature of the metal are much higher than The combustion temperature of the composite material, while the laser removes the metal film layer, it is difficult to avoid burning the surface of the carrier. In this example, a nanosecond fiber laser with a wavelength of 1064 nm is used as the laser source, and the (5+3) axis laser three-dimensional high-speed scanning precision etching equipment coats a layer of 17 μm thick copper film on the surface of the glass fiber composite carrier. Projective high-speed 3D scanning processing of complex surface with layer structure. The laser scanning etching parameters are nanosecond laser output power of 30W, ...

example 2

[0067] In the prototyping of thin-walled and milled aerospace complex components, it is necessary to meet the requirements that the laser must penetrate the protective glue but not damage the surface of the metal substrate. In this example, the (5+1) axis CO 2 The laser three-dimensional precision milling equipment is used to carry out three-dimensional laser contour track carving on the protective glue after 0.5mm of the thin-walled aviation titanium alloy engine ring thin-walled casing milling parts. The laser engraving parameter is CO 2The laser output continuous laser power is 80W. The laser focus is on the surface of the protective glue. The edge of the type protective glue is smooth and smooth, without burrs and other defects. At the same time, the surface of the metal substrate is not scratched, and there is no ablation area observed on the surface under a microscope, and the whole part (including the metal substrate and the protective adhesive layer) has no deformati...

example 3

[0069] In the laser repair of aerospace complex ceramic core components, the ceramic core has the characteristics of complex shape and thin wall, and the material has the characteristics of high melting point, high hardness and brittle texture. During the repair process, the repair accuracy can reach the order of 5 μm. In this example, (5+3) axis picosecond laser three-dimensional high-speed scanning precision etching equipment is used to carry out complex surface cross-scale laser high-speed scanning ceramic core precision etching core repair. The technical parameters of laser repairing ceramic cores are picosecond fiber laser with a wavelength of 1064nm, output power of 20W, repetition frequency of 200kHz, and pulse width of 150ps. Realize laser three-dimensional ceramic core precision repair. After testing, the dimensional error accuracy of laser repair is less than 3 μm, and the removal surface is smooth and flat, without micro-cracks, burrs, ablation and other defects, an...

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Abstract

The present invention discloses a laser processing head and a multi-light source, multi-function and multi-axis processing apparatus comprising the same. The laser processing head includes a shell, an optical path system, a locating conical disk-shaped connecting mechanism, a laser range finder, a motor driving mechanism and a dust collection protection cover. The laser processing head has the advantages of a plurality of processing modes, flexibility in laser selection and easiness in replacement. The multi-light source, multi-function and multi-axis processing apparatus includes an apparatus control and operation system platform, a multi-axis linkage numerically-controlled machine tool and the laser processing head; the laser processing head is fixed on a high-precision multi-axis linkage machine tool through a blade handle type positioning cone device; and large-breadth and cross-scale laser fine processing only requires the switching of a laser light source, a laser optical path and the laser processing head, so that at least three kinds of large complex component fine surface processing application can be realized. The multi-light source, multi-function and multi-axis processing apparatus is especially for the aerospace field. The laser processing head and the multi-light source, multi-function and multi-axis processing apparatus comprising the same of the invention have the advantages of low manufacturing cost, wide application range, convenience in mass production and the like.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a multi-light source, multi-functional, multi-axis laser processing method and equipment. [0002] technical background [0003] In the precision machining of three-dimensional complex components in aerospace, there are a large number of requirements for surface pattern making, size repair and chemical milling of irregular curved surface components. The common feature is surface fine processing. The component size is generally several meters, and the manufacturing accuracy is tens of microns. , and the materials are different, which belongs to the typical "complex surface cross-scale" manufacturing of different materials. The traditional multi-axis machining method has poor machining accuracy and consistency and extremely low production efficiency, which is difficult to meet the requirements of practical applications. [0004] For example, in missile and airc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/36B23K26/08B23K26/064B23K26/046B23K26/70B23K26/16
CPCB23K26/046B23K26/0643B23K26/0884B23K26/16B23K26/36B23K26/702
Inventor 段军张菲胡乾午曾晓雁蒋明
Owner HUAZHONG UNIV OF SCI & TECH
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