Multi-axis laser-abrasive water jet precision polishing synchronous machining method

An abrasive water jet and synchronous processing technology, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as uneven laser reflection, low efficiency of water jet polishing, and affecting the beam quality of the workpiece surface, so as to improve the surface quality. Quality, increase grinding and polishing efficiency, increase surface hardness and wear resistance

Active Publication Date: 2018-12-21
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing multi-axis water-jet composite processing technologies converge the laser and water flow at the same point on the workpiece to perform water-jet-assisted cutting, and water jets cool and erode the oxidized area while laser cutting; while for water-guided laser processing Generally speaking, it has the characteristics of small heat-affected zone, high processing efficiency, good workpiece cooling effect and clean kerf. However, if abrasives are added, the laser will be reflected unevenly in the jet, which will seriously affect the quality of the beam reaching the surface of the workpiece. , and the efficiency of water jet polishing without abrasives is also low

Method used

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, this specific embodiment provides a multi-axis laser processing technology and an abrasive water jet precision polishing composite processing technology, and its use includes the following steps:

[0027] S1, processing head assembly;

[0028] S2, setting the processing trajectory compensation;

[0029] S3. Implement laser-abrasive water jet synchronous processing.

[0030] Install the gas nozzle 0 of the laser processing head and the abrasive water jet processing head 1 on the Z axis. The length of the gas nozzle 0 is 100mm, the diameter of the top is 10mm, the diameter of the bottom is 2mm, the thickness is 1mm, the taper is 1:12.5, the material is aluminum alloy, the spot of the laser 21 is 0.5mm after focusing, the laser pulse width is about 6ps, and the wavelength is 1064nm. Pulse energy 50μJ, frequency 500KHz. The internal ventilation 10 of the processing head 2 is argon, the internal ventilation is argon, the pressure is 1.2MPa, and...

example 2

[0034] Such as figure 1 As shown, this specific embodiment provides a multi-axis laser processing technology and an abrasive water jet precision polishing composite processing technology, and its use includes the following steps:

[0035] S1, processing head assembly;

[0036] S2, setting the processing trajectory compensation;

[0037] S3. Implement laser-abrasive water jet synchronous processing.

[0038] Install the gas nozzle 0 of the laser processing head and the abrasive water jet processing head 1 on the Z axis. The length of the gas nozzle 0 is 100mm, the diameter of the top is 10mm, the diameter of the bottom is 2mm, the thickness is 1mm, the taper is 1:12.5, the material is aluminum alloy, the spot of laser 21 is 2mm after focusing, the laser pulse width is about 6ps, the wavelength is 1064nm, single pulse Energy 70μJ, frequency 300KHz. The internal ventilation 11 of the processing head is argon gas, the pressure is 2.3MPa, and the water content of the gas is 11....

example 3

[0042] Such as figure 1 As shown, this specific embodiment provides a multi-axis laser processing technology and an abrasive water jet precision polishing composite processing technology, and its use includes the following steps:

[0043] S1, processing head assembly;

[0044] S2, setting the processing track compensation;

[0045] S3. Implement laser-abrasive water jet synchronous processing.

[0046] Install the gas nozzle 0 of the laser processing head and the abrasive water jet processing head 1 on the Z axis. The length of the gas nozzle 0 is 100mm, the diameter of the top is 10mm, the diameter of the bottom is 2mm, the thickness is 1mm, the taper is 1:12.5, the material is aluminum alloy, the spot of the laser 21 is 1mm after focusing, the laser pulse width is about 6ps, the wavelength is 1064nm, single pulse Energy 30μJ, frequency 500KHz. The internal ventilation of the processing head is argon, the pressure is 5MPa, and the water content of the gas is 11.36g / kg. Abr...

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Abstract

The invention provides a multi-axis laser-abrasive water jet precision polishing synchronous machining method. The multi-axis laser-abrasive water jet precision polishing synchronous machining methodcomprises the following steps that first, a laser-air curtain machining head and an abrasive water jet spraying head are mounted on a special clamp; then, the clamp provided with the laser-air curtainmachining head and the abrasive water jet spraying head is mounted on the Z axis of a multi-axis machine tool; then, in the machining process, machining compensation is set according to the distancebetween the laser spot center and the water jet dispersion area center; and finally, according to parameters required by machining, laser-abrasive jet polishing synchronous machining is implemented. The process is simple, real-time accurate polishing of a machining area during machining is guaranteed, and the machining efficiency is improved while the grinding and polishing uniformity is guaranteed. In the aspect of application expansion, machining surface modification can be synchronously achieved by changing the temperature difference between a jet or air flow and the laser machining area, or precision polishing of the complex curved surface is conducted only through the water jet.

Description

technical field [0001] The invention relates to the field of laser-grinding composite processing, in particular to a multi-axis laser processing technology and an abrasive water jet precision polishing composite processing method, which can perform laser-abrasive water jet synchronous processing on complex contour surfaces. Background technique [0002] Due to the inevitability of tool loss in the traditional contact processing process, there are problems such as large resource consumption in the processing process, poor economy, and many unstable factors in processing quality. The emergence of non-contact processing has made up for the above-mentioned shortcomings of traditional contact processing to a certain extent. Non-contact processing avoids tool wear during processing, and can accurately control the energy source required for processing, monitor the stability of its energy output in real time, and greatly improve the stability of the surface quality of the workpiece....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/144
CPCB23K26/144
Inventor 王成勇杜策之王宏建胡小月郑李娟黄欣唐梓敏
Owner GUANGDONG UNIV OF TECH
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