基于双缝干涉水导激光打孔的仿真研究
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(武汉科技大学 汽车与交通工程学院,湖北 武汉 430070)

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邓明星 (1980-),女,博士,副教授,硕士生导师,主要从事制造工程优化设计方面的研究。

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国家自然科学基金项目(51975426)和武汉市科技计划项目(2019010701011393)资助项目


Simulation of water-jet guided laser drilling based on double-slit interference
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(School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430070, China)

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    摘要:

    水导激光加工技术具有热效应小、精度高、无刀具损坏等优点,被应用到高精度元件的加工中。为减小激光聚焦光斑直径以利于激光与水射流的精确耦合、提高激光孔的质量,提出了基于双缝干涉原理以减小激光聚焦光斑直径的方法。构建了传统水导激光和双缝干涉水导激光打孔的几何模型和数学模型;基于COMSOL分别进行仿真,对比和分析了在激光束参数、加工条件均相同的条件下,传统水导激光和双缝干涉水导激光打孔时对激光孔轮廓的演化、热影响区域分布和重铸层大小的影响。结果表明:与传统水导激光相比,采用双缝干涉水导激光加工技术能有效地减小激光孔直径、锥角、热影响区域宽度和重铸层大小,在现有条件下进一步减小激光聚焦光斑直径。

    Abstract:

    Water-jet guided laser machining technology has the advantages of low thermal effect,high precision and no tool damage,and has been applied to the machining of high-precision components. In order to reduce the diameter of laser focusing spot to facilitate the accurate coupling between laser and water-jet and improve the quality of laser hole,a method of reducing the diameter of laser focusing spot based on the principle of double-slit interference is proposed.The geometric and mathematical models of traditional water-jet guided laser and double-slit interference water-jet guided laser drilling are constructed. Based on COMSOL simulation,the effects of traditional and double-slit interference water-jet guided laser drilling on the evolution of laser hole profile,the distribution of heat affected area and the size of recast layer are compared and analyzed under the same laser beam parameters and processing conditions.The results show that compared with traditional water-jet guided laser,the double-slit water-jet guided laser processing technology can effectively reduce the diameter of laser hole,the cone angle,the width of heat-affected area and the size of recasting layer,and further reduce the diameter of laser focusing spot under the existing conditions.

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陈云,邓明星.基于双缝干涉水导激光打孔的仿真研究[J].光电子激光,2024,35(2):198~206

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  • 收稿日期:2022-08-02
  • 最后修改日期:2022-10-09
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  • 在线发布日期: 2024-02-02
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