A double vortex electric field assisted ultrafast laser processing system and processing method thereof
An electric field-assisted, ultra-fast laser technology, used in metal processing equipment, laser welding equipment, manufacturing tools, etc., to reduce adhesion, improve processing accuracy, and reduce thermal effects.
Active Publication Date: 2020-09-25
HUNAN UNIV
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Problems solved by technology
The above two methods only control the plasma and molten metal below the surface of the workpiece, and are only suitable for laser drilling processing, not for ultrafast laser surface micro-nano processing
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[0022] The system and method proposed by the present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] Such as figure 1 As shown, the double vortex electric field assisted ultrafast laser processing system provided by the present invention includes an ultrafast laser 1, a polarizer 2, a half wave plate 3, a beam amplifier 4, a mirror 5, a focusing mirror 6, a coaxial Suction device 7, positive spiral electrode 8, negative spiral electrode 9, workpiece 10, five-axis displacement platform 11, positive lead wire 12, negative lead lead 13, power supply 14, wherein, power supply 14 is connected with positive spiral electrode 8 through positive lead wire 12, The negative wire 13 is connected to the negative spiral electrode 9, the workpiece 10 is clamped on the five-ax...
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The invention relates to a double vortex electric field assisted ultrafast laser machining system and a machining method thereof. The system comprises an ultrafast laser, a polarization modulation lens, a beam amplifier, a focusing lens, a coaxial air suction device, a double helix electrode and a five-axis displacement platform. The machining method comprises the following steps that firstly, a workpiece is clamped on the five-axis displacement platform where the double helix electrode is fixed; then a power supply is connected with the double-helix electrode, and the double-helix electrode is enabled to generate a double vortex electric field of 0-10<5>V / m by controlling the voltage of the power supply; and the ultrafast laser is started, polarization modulation, light beam amplificationand reflect focalization are carried out on laser beams, then the laser beams pass through the double vortex electric field to act on the surface of the workpiece, and meanwhile, coaxial air suctionis carried out above the workpiece so as to remove plasma. According to the double vortex electric field assisted ultrafast laser machining system and the machining method thereof, movement control over the plasma is achieved by utilizing the double vortex electric field, and the coaxial air suction is combined, so that high-efficiency and high-quality laser micro-nano machining and laser drillingare achieved.
Description
technical field [0001] The invention relates to the technical field of laser processing, and relates to a system and a processing method for ultrafast laser processing assisted by a double vortex electric field. Background technique [0002] As a single-step processing process with high resolution, low heat-affected zone, and almost applicable to any material, ultrafast laser micro-nano processing technology has developed into an important advanced micro-nano processing technology. Ultrafast laser micro-nano processing technology can significantly change the optical properties and wetting properties of the material surface, and has a wide range of applications in decoration, antifreeze, anticorrosion, self-cleaning and drag reduction. [0003] When the ultrafast laser interacts with the material being processed, it creates a strong plasma cloud. These plasma clouds absorb part of the laser beam, enhancing the thermal effect. At the same time, the plasma refracts the laser ...
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IPC IPC(8): B23K26/00B23K26/70
CPCB23K26/00B23K26/70
Inventor 宋立军赵泽旭肖辉王尉刘璇刘星伯
Owner HUNAN UNIV