基于力耦合的非谐振单元组成的超声变幅器设计

Design of an ultrasonic transducer with non-resonant units based on force coupling

传统的超声振动系统全谐振设计方法要求组成超声振动系统的各个单元有相同的谐振频率,各个组成单元的结构尺寸由谐振频率确定,而超声珩齿系统中的齿轮结构尺寸是由它的使用要求决定,是非谐振单元,不能用全谐振理论设计,采用力耦合方法,将齿轮简化为环盘,将它和变幅杆组合并联合建立动力学方程,实现了非谐振单元组成的超声变幅器的设计。

The traditional whole-resonant design method for an ultrasonic vibratory system requires that every unit in the system has the same resonant frequency, namely, its structural sizes are determined with the resonant frequency. However, the gear size in an ultrasonic gear honing system is determined with the gear＇s application requirements and the gear is a non-resonant unit and can not be designed with the whole resonant theory. Here, the gear was reduced to an annular plate, the dynamic equations were established with combination of the annular plate and a bar with varying amplitude based on force coupling and an ultrasonic transducer with non-resonant units was designed.