China Mechanical Engineering ›› 2022, Vol. 33 ›› Issue (13): 1544-1550.DOI: 10.3969/j.issn.1004-132X.2022.13.005

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Scanning Ablation Characteristic Control for Femtosecond Laser Finishing of Face Gears

MING Xingzu1,2;XIAO Yongbo2;LIU Kefei1;ZHOU Xian1;ZHANG Haibo1;MING Rui2   

  1. 1 School of Mechanical Engineering,Hubei University of Arts and Science,Xiangyang,Hubei,441053
    2 School of Mechanical Engineering,Hunan University of Technology,Zhuzhou,Hunan,412007
  • Online:2022-07-10 Published:2022-07-25

飞秒激光精修面齿轮的扫描烧蚀特征控制

明兴祖1,2;肖勇波2;刘克非1;周贤1;张海波1;明瑞2   

  1. 1.湖北文理学院机械工程学院,襄阳,441053
    2.湖南工业大学机械工程学院,株洲,412007
  • 通讯作者: 肖勇波(通信作者),男,1995年生,硕士研究生。研究方向为齿轮激光加工技术。E-mail:1518081753@qq.com。
  • 作者简介:明兴祖,男,1964年生,教授。研究方向为齿轮精微制造理论和技术。E-mail:mxz9036@126.com。
  • 基金资助:
    国家自然科学基金(51975192);湖南省自然科学基金(2021JJ30214,2021JJ50042);湖北省高等学校优秀中青年科技创新团队项目(T201919);机电汽车湖北省优势特色学科群开放基金(XKQ2021044,XKQ2021050,XKQ2021043)

Abstract: Based on the energy accumulation effect of femtosecond laser ablation of flank gears, a three-temperature heat transfer model of coupling between photon-electron-lattice systems was established herein, and a method to determine the scanning distance between femtosecond laser ablation tooth surfaces was proposed. The simulation shows that when the energy density is as 6.47 J/cm2, the equilibrium temperature 3200 K exceeds the melting temperature of materials, and the heat accumulation effect is obvious. The cumulative laser intensity was calculated according to different scanning distances to control the depth and contour of pit ablation. The experimental results show that when the energy density is as 6.47 J/cm2, with the decrease of scanning distance, the laser cumulative intensity increases, and the ablation depth of the tooth surface increases linearly; when the scanning distance is as 25 μm, the machining quality of the gear surfaces is good. 

Key words:  , femtosecond laser, three-temperature heat transfer model, energy accumulation effect, ablation depth

摘要: 基于飞秒激光精修面齿轮时的能量累积效应,建立了光子-电子-晶格系统间耦合作用的三温传热模型,提出一种确定飞秒激光烧蚀齿面扫描路径间扫描间距的方法。仿真得出,能量密度为6.47 J/cm2时,平衡温度3200 K超过材料的熔化温度,热累积效应明显。根据不同的扫描间距计算激光累积强度,以控制凹坑烧蚀深度和轮廓。实验结果显示,能量密度为6.47 J/cm2时,随着扫描间距的减小,激光累积强度增大,齿面的烧蚀深度线性增大;扫描间距为25 μm时的齿轮表面加工质量良好。

关键词: 飞秒激光, 三温传热模型, 能量累积效应, 烧蚀深度

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