Dynamic axis mirror bracket

A dynamic shaft and mirror frame technology, applied in instruments, laser welding equipment, optics, etc., can solve the problems that low-power motors cannot achieve high-speed motion, rigidity is difficult to be significantly improved, and it is difficult to meet the needs of high-speed motion, so as to achieve good machining performance, excellent overall performance, and the effect of low thermal expansion coefficient

Active Publication Date: 2017-01-25
苏州菲镭泰克激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used copper structure mirror frame is too heavy, and the small power motor cannot achieve high-speed movement. However, the aluminum alloy mirror frame is used to greatly reduce the quality, but the aluminum alloy has low hardness and poor rigidity. There is deflection during high-speed movement and the stability is not enough. short service life
The elastic modulus of aluminum alloy is generally less than 70GPa. Although the strength of the material can be greatly improved by means of adding alloy elements and heat treatment, it is difficult to significantly improve the rigidity of the aluminum alloy material itself, and it is difficult to meet the needs of high-speed sports.

Method used

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Effect test

Embodiment 1

[0028] A1-AlN composite frame

[0029] The material composition ratio is A1-10wt.% AlN, adding A1N ceramic particles into the liquid aluminum, stirring and mixing and casting to prepare a particle-reinforced aluminum matrix composite material. The density of the aluminum matrix composite material is about 2.75g / cm 3 , no pores, cracks and other defects, the density reaches more than 98%, the elastic modulus reaches 95GPa, the thermal conductivity is about 160W / m.K, and the processing performance is good.

[0030] Compared with the aluminum alloy material, the wall thickness of the processed lens barrel is reduced to 12mm, and the lens barrel is punched and grooved at the same time. With the addition of aluminum alloy pressure rings, gaskets, etc., the overall weight of the frame is 0.49kg, and the overall weight reduction can reach 18%. The high-speed movement of the galvanometer can reach a linear speed of 9000mm / s, maintaining the stable operation of the dynamic focusing sys...

Embodiment 2

[0032] A1-15wt.% SiC composite mirror frame

[0033] The material composition ratio is A1-15wt.% SiC, aluminum alloy powder and SiC fiber material are used, and vacuum hot pressing is used to prepare a fiber-reinforced aluminum matrix composite material. The density of the aluminum matrix composite material is about 2.77g / cm 3 , no pores, cracks and other defects, the density reaches more than 95%, the elastic modulus reaches 120GPa, the thermal conductivity is about 230W / m·K, and the machinability is good.

[0034] Compared with the aluminum alloy material, the wall thickness of the processed lens barrel is reduced to 10mm, and the lens barrel is punched and grooved at the same time. With the addition of aluminum alloy pressure rings, spacers, etc., the overall weight of the frame is 0.4kg, and the overall weight reduction can reach 33%. The linear speed of the high-speed movement of the galvanometer can reach 15000mm / s, which keeps the dynamic focus system working stably.

Embodiment 3

[0036] A1-28wt.% Si composite mirror frame

[0037] The material composition ratio is A1-30wt.%Si, the aluminum powder and silicon powder are melted into a liquid state, and the particle-reinforced aluminum-based composite material is prepared by spray deposition. The density of the aluminum-based composite material is about 2.64g / cm 3 , no pores, cracks and other defects, the density reaches more than 98%, the elastic modulus reaches 90GPa, the thermal conductivity is about 110W / m.K, and the machinability is good.

[0038] Compared with the aluminum alloy material, the wall thickness of the processed lens barrel is reduced to 12mm, and the lens barrel is punched and grooved at the same time. With the addition of A1-30wt.% Si composite pressure rings, gaskets, etc., the overall weight of the frame is 0.42kg, and the overall weight reduction can reach 30%. The linear speed of the high-speed movement of the galvanometer can reach 10000mm / s, and the dynamic focusing system can be...

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Abstract

The invention discloses a dynamic axis mirror bracket. The dynamic axis mirror bracket comprises a lens cone main body, a pressing ring, a lens and a gasket, wherein the lens and the gasket are disposed in the lens cone main body and are fixed by virtue of the pressing ring, the lens cone main body is made of an aluminum-based composite material, the aluminum-based composite material is formed by compounding metal aluminum and a reinforcing body, wherein the weight percentage of the aluminum element is 40 to 95 percent, the density is 1.8 to 3.5 g/cm<3>, the elasticity modulus is 80 to 150 GPa, and the heat conductivity is 100 to 200 W/m.k. By compounding aluminum and the material with high strength and good rigidity, the high elasticity modulus, high heat conduction coefficient and low heat expansion coefficient are realized, the bending stress deformation and hot strain are unlikely to occur, and the machining property is good; and the weight can be further reduced on the basis of the original mirror bracket structure, the wall thickness of components can be reduced, a porous structure is machined, a ribbed plate structure is added, the weight of the mirror bracket is reduced, the surface area of the structure is increased, so that the heat dissipation performance is improved, the comprehensive performance is excellent, and a Z galvanometer mirror bracket is high in motion precision and stability.

Description

technical field [0001] The invention relates to a dynamic axis mirror frame of a laser dynamic focusing system, belonging to the technical field of lasers. Background technique [0002] Laser processing technology has developed rapidly in recent years, and laser fine processing technology with focused spot scanning processing as the core is widely used. At present, the processing parts have been extended from simple plane processing to three-dimensional surface processing. Compared with traditional two-dimensional laser processing, the three-dimensional dynamic focusing system using dynamic optical control technology can realize large-format and three-dimensional curved surface processing in the fields of high-end industrial manufacturing, electronics, medical treatment and handicrafts, and can replace traditional processing methods. [0003] The dynamic focus system is mainly composed of a dynamic focus mirror (Z galvanometer), a focus mirror, an X galvanometer, and a Y ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/02G02B7/04B23K26/04
CPCB23K26/046G02B7/026G02B7/028G02B7/04
Inventor 何金江杨海青
Owner 苏州菲镭泰克激光技术有限公司
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