大负载超声振动磨削系统的设计

设计了一种大负载超声振动磨削系统,超声系统由换能器、圆柱圆锥形变幅杆和轮辐式砂轮组成。首先将轮辐式砂轮等效成轮毂为圆柱杆、辐板与轮缘为中厚板的复合模型,利用各接触面边界连续的条件推导系统的频率方程,完成了超声磨削系统的设计,制作了实验装置并分析验证了其声学振动特性。实验结果表明:利用轮辐式砂轮复合模型求解系统频率方程,在解决大负载超声振动磨削系统设计难题上的有效性。该超声系统结构简单,声学振动特性稳定,可输出均匀的位移振幅,有望在大负载的超声磨削领域获得应用。 

Design of the large-load ultrasonic vibration grinding system

A large-load ultrasonic vibration grinding system is designed.It is composed of a transducer,a cylindrical conical horn and a spoke-type grinding wheel.Firstly,the spoke-type grinding wheel is equivalent to a composite model that the hub is cylindrical rod,the spoke and the rim are medium-thick plate.Secondly,the frequency equation of the system is deduced by the continuous boundary conditions of each contact surface,the ultrasonic grinding system design is completed,the experimental device is also manufactured,and the acoustic vibration characteristics of the device is analyzed and verified.The experimental results show that the spoke-type compound model utilized to obtain the system frequency equation is effective for solving the design problem of the large-load ultrasonic vibration grinding system.The ultrasonic system has simple structure,stable acoustic vibration characteristics,uniform displacement amplitude output.It is expected to be applied in the field of large-load ultrasonic grinding.