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Multifunctional laser processing head

A laser processing head and scanning galvanometer technology, applied in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of fine micromachining accuracy and quality deterioration, inability to use processing nozzles, and lack of

Active Publication Date: 2015-05-20
武汉飞能达激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that it is impossible to use a processing nozzle coaxial with the laser focused beam without the function of protection, exclusion or combustion to improve processing efficiency. This defect will also lead to poor precision and quality of fine micromachining

Method used

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Examples

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Effect test

example 1

[0026] use as figure 1 For the laser processing head shown, the exit diameter of the processing nozzle is 0.5 mm, the focal length of the scanning focusing lens is 100 mm, and the distance between the focusing lens and the mirror in the two-dimensional scanning galvanometer is 240 mm; the processing inlet diameter is 500 microns and The tapered ceramic nozzle with an outlet diameter of 200 microns and a thickness of 0.5 mm uses an xy two-dimensional scanning galvanometer to perform variable-diameter laser cutting and etching on ceramics, and at the same time inputs high-pressure nitrogen to discharge the slag generated by laser etching. This method not only meets the size requirements of high-precision machining, but also eliminates the remelted layer on the inner hole wall, thereby eradicating the source of micro-cracks and greatly improving the quality of laser processing.

example 2

[0028] use as figure 1The laser processing head shown, the laser processing head processes 100×100 array microholes with a diameter of 80 microns on a 100 micron thick stainless steel sheet, the exit diameter of the processing nozzle is 0.2 mm, the focal length of the scanning focusing lens is 50 mm, and the focusing lens The distance from the reflector in the two-dimensional scanning galvanometer is 120mm; while the xy two-dimensional scanning galvanometer is used to cut holes on the stainless steel sheet in flight, the high-pressure inert argon gas is input to discharge the slag generated by laser etching. The method not only realizes high-precision and fast and efficient processing, but also avoids oxidation of the laser processing area, completely eliminates the phenomenon of slag hanging at the bottom of the laser incision, and improves the processing quality.

example 3

[0030] use as figure 2 For the laser processing head shown, the outlet diameter of the processing nozzle is 1 mm, the focal length of the general focusing lens is 200 mm, and the distance between the focusing lens and the mirror in the two-dimensional scanning galvanometer is 350 mm; the welding diameter of the laser processing head is 600 microns And the stainless steel sheet micro-sealed cover with a thickness of 0.1mm, while using the xy two-dimensional scanning galvanometer to quickly scan and weld the stainless steel sheet micro-sealed cover, input argon gas to protect the laser weld area from being oxidized. This method not only meets the sealing requirements Quality requirements, and because of the fast welding speed, thermal deformation of the stainless steel sheet micro-sealed cover is prevented, and the efficiency of laser welding is improved at the same time.

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Abstract

The invention discloses a multifunctional laser processing head. The processing head is formed by combining a scanning galvanometer type laser processing head and a spray nozzle type laser processing head into a closed structure through a connecting piece, and when the multifunctional laser processing head works, a laser beam can enter into the scanning galvanometer type laser processing head, be projected to the spray nozzle type laser processing head via the scanning galvanometer type laser processing head and be further converged on the surface of a workpiece on a two-dimensional worktable. The connecting piece can adopt a connecting cylinder and is positioned between a two-dimensional all-trans scanning galvanometer and a convergent lens or positioned between the convergent lens and a coaxial processing spray nozzle. The multifunctional laser processing head disclosed by the invention can overcome the defects of the existing two laser processing heads and fully utilize the advantages of the two laser processing heads. The invention provides the multifunctional laser processing head, which can realize more than two laser processing ways, reduce cost, improve efficiency and further enhance laser processing capability.

Description

technical field [0001] The invention belongs to the application field of laser processing, and in particular relates to a multifunctional laser processing head. Background technique [0002] At present, the laser processing head is mainly divided into two types: the first nozzle type laser processing head, which is a laser processing head device composed of a focusing lens and a processing nozzle. The laser processing method is that the laser beam passes through the focusing lens and the coaxial processing nozzle to focus the beam On the workpiece to be processed, the movable worktable or fixed worktable moves the focused laser beam through the light guide system to process the workpiece. This laser processing method can output a certain gas to the laser processing area through the coaxial processing nozzle, protect the processed area from being oxidized (such as argon) or chemically react with the processed area (such as oxygen), and promote combustion to improve processing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/36B23K26/04B23K26/14B23K26/00
Inventor 段军李祥友胡乾午曾晓雁
Owner 武汉飞能达激光技术有限公司
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