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Carbon fiber composite material hole machining system and method based on laser double-beam rotary cutting

A hole processing method and composite material technology, applied in metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of complex structure, high precision requirements for installation and positioning, and unfavorable large-scale promotion, so as to improve the smoothness , The effect of improving processing efficiency

Active Publication Date: 2022-07-15
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a technical solution for rotary cutting and drilling through laser beams has been developed, such as application number 202110321678X, an ultrafast laser microhole rotary cutting processing device, but the Bessel laser beam needs to be shaped and rotary cut. There are too many optical components in the device, and the incident direction of the laser needs to be adjusted separately, the structure is too complicated, and the requirements for installation and positioning accuracy are high, which is not conducive to large-scale promotion

Method used

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  • Carbon fiber composite material hole machining system and method based on laser double-beam rotary cutting
  • Carbon fiber composite material hole machining system and method based on laser double-beam rotary cutting
  • Carbon fiber composite material hole machining system and method based on laser double-beam rotary cutting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] An ultraviolet nanosecond laser with a laser beam wavelength of 355 nm is selected, the laser beam spot size is about 30 μm, and the thickness of the carbon fiber composite material 9 is 3 mm.

[0062] Set the laser repetition frequency to 45kHz and the scanning speed to 1000mm / s;

[0063] Adjust the position of the aperture adjustment unit 4 and the deflection angle of the angle adjuster 5 according to the focal length of the focusing lens 8 and the diameter of the hole, so that the laser beam can be perpendicular to the carbon fiber composite material 9;

[0064] Turn on the laser 1, focus the laser beam on the surface of the carbon fiber composite material 9, and scan, and every 50 scans, the focusing lens 8 is moved down by 0.3mm to complete the layered cutting, until a non-tapered through hole (such as a diameter of 10mm) is formed. Figure 4 shown).

Embodiment 2

[0066] Adjust the position of the aperture adjustment unit 4 and the deflection angle of the angle adjuster 5 according to the hole taper requirements, wherein the counterclockwise rotation of the angle adjuster 5 can obtain a through hole with a positive taper (the diameter of the entrance of the hole is greater than the diameter of the exit) (ie Figure 5 shown), otherwise a hole with a negative taper is obtained, and other steps are the same as in Example 1, and will not be repeated here.

[0067] To sum up, the present invention has a simple structure design, does not require complex equipment and high control precision requirements, and can greatly improve the processing efficiency. Drilling has obvious advantages. Specifically, it can process through holes with zero taper or any taper on carbon fiber materials by adjusting the position of the aperture adjustment unit and the angle adjuster, and it is beneficial to improve the smoothness of the hole wall.

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Abstract

The invention discloses a carbon fiber composite material hole machining system and method based on laser double-beam rotary cutting. The beam expander is used for expanding the laser beams generated by the laser; the DOE beam splitter is used for splitting the laser beams output by the beam expander; the aperture adjusting unit is used for translating the flight path of the split laser beams; the angle adjuster unit is used for adjusting the processing angle between the laser beam output by the aperture adjusting unit and the carbon fiber composite material; the Dove prism is used for deviating the laser beam output by the angle regulator unit and enabling the laser beam to form an annular processing area on the carbon fiber composite material; the reflecting mirror is used for reflecting the laser beams output by the Dove prism; and the focusing lens is used for focusing the laser beams reflected by the reflecting mirror to the surface of the carbon fiber composite material. Through holes with zero taper or any taper can be machined in the carbon fiber material by adjusting the position of the hole diameter adjusting unit and the angle adjuster, and the machining efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of laser processing, in particular to a carbon fiber composite material hole processing system and method based on laser double-beam rotary cutting. Background technique [0002] Carbon fiber reinforced composite material is a kind of composite material with resin as matrix and carbon fiber as reinforcement phase. Because of its advantages of high modulus, high strength, corrosion resistance, light weight, etc. widely used. But at the same time, carbon fiber reinforced composite material is also a typical difficult-to-machine material. Due to the characteristics of anisotropy, poor interlayer connection strength, and high material hardness, traditional machining is often accompanied by defects such as delamination, tearing, and tool wear. , Laser processing, as a non-contact emerging processing technology, integrates the advantages of various processing techniques and has a high level of automation. It is e...

Claims

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Application Information

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IPC IPC(8): B23K26/382B23K26/402B23K26/064B23K26/073
CPCB23K26/382B23K26/402B23K26/064B23K26/073B23K26/0648B23K26/0652B23K26/0643
Inventor 荣佑民黄禹陈兴华陈龙李文元
Owner HUAZHONG UNIV OF SCI & TECH
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