【摘要】 针对超声金属焊接声学系统需承载径向分力,而传统单法兰支承结构难以同时满足超声传递和结构刚度双重要求的问题,基于Ansys数值仿真与单因素实验相结合的方法,开展了超声金属焊接双法兰结构声学系统优化设计研究。首先,对声学系统进行分析,提出了一种声学系统双法兰支承方案;其次,进行法兰厚度尺寸对超声传递效率和支承结构刚度的影响规律研究;最后,通过实验对所设计的声学系统进行性能测试。结果表明:振动系统振幅放大倍数大于2.5,在满足焊接振幅要求的前提下,结构刚度大幅提高。通过仿真分析和实验,验证了双法兰结构的有效性,为超声金属焊接声学组件设计提供了新思路。更多还原

【Abstract】 In the process of ultrasonic metal welding acoustic system needs to bear radial force. It is difficult for the traditional single flange support structure to satisfy both the ultrasonic transmission and structural stiffness. In this paper a double-flanges structure of acoustic system suitable for ultrasonic metal welding is designed based on the method of Ansys numerical simulation and single factor test. Firstly,the acoustic system is analyzed and a double-flanges support structure of acoustic system is proposed. Secondly,the influence of flange thickness on the ultrasonic transmission efficiency and the stiffness of the support structure is studied. Finally,the performance of the designed acoustic system is tested with experiments. The results show that the amplitude magnification of the vibration system is greater than 2.5,and the stiffness of the double-flanges structure is greatly improved. Through the simulation analysis and experiment, the validity of the double-flanges structure is verified. This work provides a new idea for the design of ultrasonic metal welding acoustic components.更多还原