Laser-assisted heating femtosecond pulse laser drilling device and method

A femtosecond pulse and laser drilling technology, used in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of slow processing speed of femtosecond pulse laser drilling, improve cutting efficiency and reduce ablation threshold. , The effect of high machining accuracy

Inactive Publication Date: 2017-10-10
JIANGSU UNIV
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Problems solved by technology

[0005] In order to solve the problem of slow processing speed of femtosecond pulse laser drilling at present

Method used

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  • Laser-assisted heating femtosecond pulse laser drilling device and method

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Embodiment 1

[0027] A laser-assisted heating femtosecond pulse laser drilling device, such as figure 1 As shown, it includes a computer 1, a workbench controller 2, a continuous laser controller 3, a continuous laser 4, a second beam expander 5, a beam splitter 6, a reflective flat mirror 7, a first beam expander 8, and a femtosecond pulse laser 9. Convex lens 10, femtosecond pulse laser controller 11, fixture 12, workpiece 13, movable worktable 14, and CCD camera 15.

[0028] The CCD camera 15 is located at the top, and directly below it is a reflective plane mirror 7, a beam splitter mirror 6 and a convex lens 10; the femtosecond pulse laser controller 11 is connected with the femtosecond pulse laser 9, and the continuous laser controller 3 is connected with the continuous laser 4. The workbench controller 2 is connected with the movable workbench 14; the femtosecond pulse laser controller 11, the continuous laser controller 3 and the workbench controller 14 are connected with the comput...

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Abstract

The invention discloses a laser-assisted heating femtosecond pulse laser drilling device and method. The device includes a femtosecond pulse laser, a first beam expander, a CCD camera, a reflective plane mirror, a beam splitter, a convex lens, and a second beam expander. , a continuous laser, a femtosecond pulse laser controller, a continuous laser controller, a workpiece, a fixture, a movable workbench, a workbench controller, and a computer; meanwhile, a laser-assisted heating femtosecond pulse drilling method using the above-mentioned device is provided , the main principle is that before the femtosecond pulse laser processes the workpiece, the continuous laser is used to preheat the workpiece to be processed, and the phase change of the material does not occur during the preheating process, so as to ensure the processing advantages of the femtosecond laser and improve the quality of the material. The absorption rate of femtosecond pulse laser reduces the ablation threshold of femtosecond laser processing materials and improves the drilling efficiency of femtosecond pulse laser.

Description

technical field [0001] The invention relates to the field of laser drilling, in particular to a laser-assisted heating femtosecond pulse laser drilling method and device. Background technique [0002] Femtosecond pulsed lasers have extremely short pulse widths and extremely high peak powers. Femtosecond laser drilling is the process of using femtosecond pulsed laser to remove material in a pulsed manner on the surface of the material to form holes on the surface of the workpiece. Because the energy of the femtosecond pulse laser is extremely high, and the action time is extremely short, the energy has not had time to diffuse, the material has been heated to a very high temperature, and the material is directly vaporized and evaporated, so the thermal effect of the femtosecond pulse laser is small, and it has little effect on the processed material. Oxidation, deformation, and heat-affected zones are all small, and the processing precision is very high, which can reach the n...

Claims

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Application Information

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IPC IPC(8): B23K26/382B23K26/0622B23K26/03
CPCB23K26/382B23K26/03B23K26/0624
Inventor 王琪琪任乃飞任旭东薛宁林卿夏凯波
Owner JIANGSU UNIV
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