激光原位辅助单点金刚石刀具系统热变形仿真与实验分析  

Thermal deformation simulation and experimental analysis of laser in-situ assisted single-point diamond tool system

作　　者：李洪达 石广丰[1] 夏名强 LI Hongda;SHI Guangfeng;XIA Mingqiang(College of Mechanical and Electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学机电工程学院,长春130022

出　　处：《激光杂志》2022年第1期58-63,共6页Laser Journal

基　　金：吉林省科技发展计划项目(No.201910302123GX)。

摘　　要：激光原位辅助单点金刚石刀具加工过程中,金刚石刀具吸收激光能量会产生相应的热变形,对加工精度产生影响。通过有限元软件COMSOL Multiphysics建立了激光透过金刚石刀具的热变形数值模拟,得到了金刚石刀具在激光辐照下的温升与热变形规律,并采用高精度的热像仪和电感测微仪记录刀具的温度变化和变形量。研究表明刀具模拟的温度和热变形与实验结果吻合较好,在激光辐照初期,刀具受热伸长趋势较为明显,当激光辐照超过550 s后,刀具热变形趋于稳定。刀具在激光功率为10 W、30 W辐照下,刀具稳态温度为29.96℃与49.85℃,刀具热变形测量值分别为0.78μm, 2.23μm。In the process of laser in-situ assisted single-point diamond tool processing, the absorption of laser energy by the diamond tool will produce corresponding thermal deformation, which will affect the processing accuracy. In this paper, the finite element software COMSOL Multiphysics is used to establish the numerical simulation of the thermal deformation of the laser penetrating the diamond tool, and the law of temperature rise and thermal deformation of the diamond tool under laser irradiation is obtained, and a high-precision thermal imager and inductive micrometer are used. The temperature change and deformation of the tool are recorded. The study shows that the simulated temperature and thermal deformation of the tool are in good agreement with the experimental results. In the initial stage of laser irradiation, the tool has a more obvious thermal elongation trend. When the laser is irradiated for more than 550 s, the tool is thermally deformed. becoming steady. When the tool is irradiated with 10 W and 30 W laser power, the steady-state temperature of the tool is 29.96 ℃ and 49.85 ℃, and the measured values of tool thermal deformation are 0.78 μm and 2.23 μm, respectively.

关 键 词：激光 热变形 金刚石 原位辅助 

分 类 号：TN209[电子电信—物理电子学]