Guo Z Y, Zhang W C, Zhao P C, Liu W D, Wang X H, Zhang L F, Hu G F
College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China.
China Automotive Technology and Research Center Company Limited, Tianjin 300000, China.
Rev Sci Instrum. 2023 Jun 1;94(6). doi: 10.1063/5.0149361.
Aiming at the fabrication of a micro-textured surface, a novel piezoelectric-driven non-resonant elliptical vibrator is proposed in this paper; the output characteristics could be adjusted by the length change of the tool holder. The flexible mechanism is the primary structure of the vibrator, which includes a lever type mechanism, an enhanced Scott-Russell mechanism, and a T-shaped mechanism. The former two mechanisms are used to enlarge the output of the piezoelectric actuator, and the T-shaped mechanism is applied to transfer the parallel movements to the elliptical trajectory. The theoretical models including the elliptical trajectory, output stiffness, and resonant frequencies are established to investigate the impacts of the tool holder and controlling signals on the output characteristics of the vibrator, which are further validated using the finite element analysis method. A prototype is developed by integrating the non-resonant elliptical vibrator assembly and controlling system. Some experiments are carried out to verify the basic performance and the adjustable properties of the vibrator.
针对微纹理表面的制造，本文提出了一种新型的压电驱动非共振椭圆振动器；其输出特性可通过刀架长度的变化进行调节。柔性机构是振动器的主要结构，它包括杠杆式机构、增强型斯科特 - 拉塞尔机构和T形机构。前两种机构用于放大压电致动器的输出，T形机构用于将平行运动转换为椭圆轨迹。建立了包括椭圆轨迹、输出刚度和谐振频率在内的理论模型，以研究刀架和控制信号对振动器输出特性的影响，并通过有限元分析方法进一步验证。通过集成非共振椭圆振动器组件和控制系统开发了一个原型。进行了一些实验以验证振动器的基本性能和可调特性。
