• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2023, Vol. 59 ›› Issue (3): 308-317.doi: 10.3901/JME.2023.03.308

• 制造工艺与装备 • 上一篇    下一篇

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基于多波长散射光特性的铝合金超精密车削表面粗糙度测量方法研究

何春雷1, 张建国2, 王姝淇3, 任成祖1   

  1. 1. 天津大学天津市装备设计与制造技术重点实验室 天津 300354
    2. 华中科技大学数字制造装备与技术国家重点实验室 武汉 430074
    3. 天津理工大学天津市先进机电系统设计与智能控制重点实验室 天津 300384
  • 收稿日期:2022-02-03 修回日期:2022-10-15 出版日期:2023-02-05 发布日期:2023-04-23
  • 通讯作者: 任成祖(通信作者),男,1962年出生,博士,教授,博士研究生导师。主要研究方向为超精密加工理论、工艺与装备。E-mail:renchz@tju.edu.cn
  • 作者简介:何春雷,男,1988年出生,博士,副教授,博士研究生导师,曾获第10届上银优秀机械博士论文奖铜奖等奖励。主要研究方向为超精密加工理论、工艺与装备。E-mail:h_chunlei@126.com;clhe@tju.edu.cn
  • 基金资助:
    国家自然科学基金(52175430,51935008,52105478)和博士后创新人才支持计划(BX20200234)资助项目。

Investigation on Measurement Method of Ultra-precision Turning Surface Roughness Based on Multi-wavelength Scattering Characteristic

HE Chunlei1, ZHANG Jianguo2, WANG Shuqi3, REN Chengzu1   

  1. 1. Tianjin Key Laboratory of Equipment Design and Manufacturing Technology, Tianjin University, Tianjin 300354;
    2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074;
    3. Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System, Tianjin University of Technology, Tianjin 300384
  • Received:2022-02-03 Revised:2022-10-15 Online:2023-02-05 Published:2023-04-23

摘要: 针对超精密车削表面,提出一种基于多波长散射光特性的表面粗糙度测量方法,以铝合金为例对该方法进行验证。首先建立超精密车削表面形貌-散射光模型并开展验证实验,定量实验结果证明建立的散射光模型平均误差仅为1%。基于散射光模型研究刀痕纹理方向、刀痕宽度(每转进给量)和刀痕高度(表面粗糙度峰谷值)对镜像光反射率的影响,研究结果证明表面粗糙度是影响镜像光反射率的关键因素。在此基础上进一步建立300~700 nm波长范围内镜像光反射率平均值和表面粗糙度之间的定量关系,基于超精密车削表面的测量结果对该定量关系进行验证。所提出新方法获得的粗糙度测量结果与原子力显微镜测量结果吻合,最大相对误差仅为7.5%。

关键词: 超精密加工, 散射特性, 表面粗糙度, 测量方法

Abstract: For ultra-precision turning surface, a surface roughness measurement method based on a multi-wavelength scattering characteristic is proposed, which is further validated with an aluminum alloy material. First, a theoretical model of surface topography-light scattering for ultra-precision turning surface are established. A validation experiment is performed. Quantitative experimental results show that the average error of the scattering model is only 1%. Based on this scattering model, the influence of turning mark direction, turning mark width (feed rate per revolution), and turning mark height (peak-valley surface roughness) on the specular reflectivity is studied. Investigation results show that surface roughness is the critical influencing factor of specular reflectivity. On this basis, the quantitative relationship between average specular reflectivity from 300 to 700 nm and surface roughness is established, which is validated based on the ultra-precision diamond turning experiment results. The surface roughness results achieved by the newly developed method is consistent with the results measured by atomic force microscope (AFM). The maximum relative error is only 7.5%.

Key words: ultra-precision machining, scattering characteristic, surface roughness, measurement method

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