摘要
针对流体振动抛光方法,设计并制作了一种圆筒形压电振子。振子能够实现6阶和10阶两种面内弯曲工作模态,谐振频率分别为38400Hz、93200Hz。通过合适的激励,能够形成圆筒振子内表面质点的行波运动。实验研究了圆筒芯的直径、液面高度以及激励电压对液体转速的影响。研究结果表明,液体转速随着圆筒芯直径的增大而升高。在同样实验工况下,激励电压越高,液体转速越大。振子工作于10阶模态时的液体转速明显高于6阶模态时的转速。
A iming at the polishing technology based on vibrations of liquid, a type of cylindrical piezoelectric vibrator was designed, which can generate the sixth and tenth order in-plane bending modes. The respective resonance frequencies are 38400Hz and 93200Hz. The piezoelectric vibrator can give rise to the traveling wave motion of the mass particles on the internal surface of the vibrator by applicable excitation. The experimental researches into the influence of the diameter of the cylinder＇s core on liquid rotational speed were carried out, as well as the influence of the height of liquid level and the excitation voltage. The experimental results show that the liquid rotational speed increases with the diameter of the cylinder＇s core. Under the same experimental conditions, the higher the excitation voltage, the faster the liquid speed. The liquid rotational speed of the tenth order bending modes is obviously higher than that of the sixth order bending modes.
出处
《机械设计与制造》
北大核心
2014年第6期103-104,108,共3页
Machinery Design & Manufacture
基金
国家自然基金项目资助(51075195)
关键词
圆筒形压电振子
超声振动
液体
转速
Cylindrical Piezoelectric Vibrator
Ultrasonic Vibration
Liquid
Rotate Speed
