Analytical design method of a device for ultrasonic elliptical vibration cutting
Analytical design method of a device for ultrasonic elliptical vibration cutting
复制标题
超声椭圆振动切割装置的解析设计方法
DOI：
10.1121/1.4976340
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Jin Yao
中科院分区：
文献类型：
--
作者：
Weihai Huang;Deping Yu;Min Zhang;Fengfei Ye;Jin Yao
超声椭圆振动切割（UEVC）在硬脆材料和黑色金属的超精密金刚石切割中是有效的。然而，它的设计是相当经验和繁琐的。本文提出了一种分析设计方法，用于开发工作在弯曲-弯曲复合模态下产生椭圆振动的UEVC装置。对于这种UEVC装置，要求两种弯曲振动的谐振频率相同。此外，两次弯曲振动的节点应一致，以便在不影响振动的情况下夹紧设备。基于所提出的解析设计方法，首先设计了UEVC装置。采用有限元法对设计的UEVC装置进行了模态分析，结果表明谐振频率与目标频率吻合较好。然后制作了UEVC原型装置，利用阻抗分析仪和激光位移传感器测量了UEVC的振动特性。实验结果表明，所设计的UEVC装置能产生与目标共振频率相近的椭圆振动。此外，通过调节外加电压的相位差和幅值，可以精确地调谐振动轨迹。仿真和实验结果验证了分析设计方法的有效性。
Ultrasonic elliptical vibration cutting (UEVC) is effective in ultraprecision diamond cutting of hard-brittle materials and ferrous metals. However, its design is quite empirical and tedious. This paper proposes an analytical design method for developing the UEVC device which works at the Flexural-Flexural complex-mode to generate the elliptical vibration. For such UEVC device, the resonant frequencies of the two flexural vibrations are required to be the same. In addition, the nodal points of the two flexural vibrations should be coincident so that the device can be clamped without affecting the vibrations. Based on the proposed analytical design method, an UEVC device was first designed. Modal analysis of the designed UEVC device was performed by using the finite element method, which shows that the resonant frequencies coincide well with the targeted ones. Then a prototype UEVC device was fabricated, and its vibration characteristics were measured by an impedance analyzer and a laser displacement sensor. Experimental results indicate that the designed UEVC device can generate elliptical vibration with the resonant frequencies closed to the target ones. In addition, the vibration trajectory can be precisely tuned by adjusting the phase difference and the amplitude of the applied voltage. Simulation and experimental results validated the effectiveness of the analytical design method.