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为了避免在传送过程中传送带与精密元件之间的摩擦损伤,设计了一种紧凑型非接触超声传送平台,对其可行性进行理论研究和实验验证。通过ANSYS动力学分析建立对称模型,模拟传送平台的模态和传送平台中心点的谐响应振型,结果显示,不同波数条件传送平台呈现出纯弯曲或混合波驱动状态。对所设计的紧凑型传送平台原型进行扫频实验,验证了超声传送过程的可行性以及悬浮频带和振型。理论及实验结果表明,根据不同使用条件,需要对驱动平台进行模态及承载能力的优化设计。研究成果可为超声悬浮平台模态振型和带宽的设计提供参考。
In order to avoid the frictional damage between the conveyor belt and precision components during the transmission, a compact non-contact ultrasonic transmission platform is designed and its feasibility is verified theoretically and experimentally. The symmetry model was established by ANSYS dynamic analysis to simulate the modal of transmission platform and the harmonic response of the center of transmission platform. The results show that the transmission platform with different wavenumbers exhibits a pure bending or mixed-wave driving state. The prototype of the compact transmission platform was designed and the frequency sweep experiments were carried out to verify the feasibility of the ultrasonic transmission process and the suspension frequency bands and mode shapes. Theoretical and experimental results show that, according to different conditions of use, it is necessary to optimize the modalities and carrying capacity of the drive platform. The research results can provide reference for the design of mode shapes and bandwidth of ultrasonic suspension platform.