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Electric-field-assisted water-guided laser cutting device

A laser cutting and electric field-assisted technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of high nozzle cost and difficulty in further improving processing accuracy, and achieve the goal of reducing manufacturing difficulty and cost and improving processing accuracy Effect

Pending Publication Date: 2021-08-06
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high nozzle cost and difficulty in further improving the machining accuracy of the existing water-conducting laser cutting device, the present invention provides an electric field-assisted water-conducting laser cutting device

Method used

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  • Electric-field-assisted water-guided laser cutting device
  • Electric-field-assisted water-guided laser cutting device
  • Electric-field-assisted water-guided laser cutting device

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Embodiment Construction

[0017] refer to figure 1 , The electric field assisted water conduction laser cutting device of the present invention includes a lens holder 1, a water chamber 2, a gas chamber 3, a substrate 5, a lens 6, a plane lens 7, a nozzle 8, and a high voltage power supply 9. Wherein the lens 6 is installed on the lens holder 1 . A liquid inlet 2-2 is opened on the water chamber 2, and liquid can enter the liquid chamber 2-1 through the liquid inlet 2-2. The water chamber 2 is connected with the gas chamber 3, and the plane lens 7 is installed in the middle section of the water chamber 2. The nozzle 8 is installed at the bottom of the water chamber 2, and the liquid in the liquid chamber 2-1 can flow out from the nozzle 8 under the action of external pressure. The gas chamber 3 is provided with a gas inlet 3-2, and external air can enter the gas chamber 3-1 through the gas inlet 3-2 and be discharged from the holes on the gas chamber 3. Both the nozzle 8 and the substrate 5 are con...

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Abstract

The invention discloses an electric-field-assisted water-guided laser cutting device which is used for solving the problems that a nozzle of an existing water-guided laser cutting device is high in cost, and the machining precision is difficult to improve. According to the device, high voltage is connected to a nozzle of the water-guided laser cutting device, a substrate is grounded, a high-voltage electric field is generated between the nozzle and the substrate, liquid is pulled out from the nozzle through the force of the electric field, columnar jet flow is generated, laser is incident into water and focused on a proper focus, and due to the fact that light can be totally reflected in the water jet flow, the high-energy laser beam can reach the to-be-machined surface along with the water jet flow, and the purpose of cutting a workpiece is achieved. Compared with a common water-guided laser cutting device, the water-guided laser cutting device can generate the jet flow with the diameter smaller than that of the nozzle, and therefore the purpose of improving the machining precision is achieved; meanwhile, the water jet flow is not generated by the aid of the high pressure, and the nozzle does not need to be made of a material with very high hardness, so that the manufacturing cost of the nozzle is reduced.

Description

technical field [0001] The invention relates to an electric field assisted water-conducting laser cutting device, which belongs to the technical field of laser processing. Background technique [0002] Laser has the advantages of high energy density and high precision, and can be used to process workpieces. The high power density laser beam is focused on the surface to be processed through the lens, so that the surface temperature of the workpiece rises rapidly to gasify or melt, so as to achieve the purpose of cutting the workpiece, which is laser cutting. Laser cutting can process a wide range of materials. But because it directly focuses the laser on the surface of the workpiece, the formed cutting marks are conical, as shown in reference figure 2 ; On the other hand, due to the high surface temperature during processing, it will bring large thermal residual stress and thermal deformation, and at the same time, high-temperature slag will accumulate, which will lead to a...

Claims

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Application Information

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IPC IPC(8): B23K26/38B23K26/70
CPCB23K26/38B23K26/702
Inventor 钟宋义鲁耀辉杨扬邵文韫杨毅彭艳蒲华燕谢少荣罗均
Owner SHANGHAI UNIV
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