This paper proposes a new vibration cutting method named “multimode vibration cutting” for precision surface texturing. The proposed cutting method utilizes multiple unidirectional vibration modes mainly in the depth-of-cut direction. The vibrations at multiple frequencies induced to the tool tip can generate not only sinusoidal but also highly-flexible trajectories such as trapezoidal, triangular, and distorted triangular waves. Notably, only a sinusoidal vibration can be induced when a single resonant vibration is applied to the tool tip. Compared to conventional highly-flexible cutting methods for surface texturing, such as the utilization of fast tool servo and amplitude control of ultrasonic elliptical vibration cutting, the proposed method is highly-efficient because of its direct usage of high resonant frequencies. Compared to conventional highly-efficient cutting methods for surface texturing, such as linear and elliptical vibration cutting which mainly utilizes the vibration component in the depth-of-cut direction, the proposed method can generate highly-flexible trajectories for various micro texture profiles. In this study, an ultrasonic multimode vibration device is developed, and the mechanics of generating multimode vibrations are demonstrated. Turning experiments with several texture profiles are performed to confirm the validity of the proposed method for highly-efficient and highly-flexible micro/nano surface texturing.

本文提出了一种新的振动切割方法，称为“多模振动切割”，用于精确的表面纹理化。所提出的切割方法主要在切割深度方向上利用多个单向振动模式。感应到工具尖端的多个频率上的振动不仅会产生正弦波，还会产生高度灵活的轨迹，例如梯形，三角波和扭曲的三角波。值得注意的是，当将单个共振振动施加到刀头时，仅会引起正弦振动。与常规的用于表面纹理化的高柔性切削方法相比，例如快速工具伺服的利用和超声椭圆振动切削的幅度控制，该方法由于直接使用高共振频率而具有很高的效率。与常规的用于表面纹理化的高效切割方法（例如主要利用切割深度方向上的振动分量的线性和椭圆振动切割）相比，该方法可以为各种微纹理轮廓生成高度灵活的轨迹。在这项研究中，开发了一种超声波多模振动装置，并演示了产生多模振动的机理。进行具有几个纹理轮廓的车削实验，以确认所提出的方法对高效和高度灵活的微/纳米表面纹理化方法的有效性。所提出的方法可以为各种微观纹理轮廓生成高度灵活的轨迹。在这项研究中，开发了一种超声波多模振动装置，并演示了产生多模振动的机理。进行具有几个纹理轮廓的车削实验，以确认所提出的方法对高效和高度灵活的微/纳米表面纹理化方法的有效性。所提出的方法可以为各种微观纹理轮廓生成高度灵活的轨迹。在这项研究中，开发了一种超声波多模振动装置，并演示了产生多模振动的机理。进行具有几个纹理轮廓的车削实验，以确认所提出的方法对高效和高度灵活的微/纳米表面纹理化方法的有效性。