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首页> 美国卫生研究院文献>Materials >Experimental Investigation on Micro-Groove Manufacturing of Ti-6Al-4V Alloy by Using Ultrasonic Elliptical Vibration Assisted Cutting
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Experimental Investigation on Micro-Groove Manufacturing of Ti-6Al-4V Alloy by Using Ultrasonic Elliptical Vibration Assisted Cutting

机译：超声椭圆振动辅助切削Ti-6Al-4V合金微槽加工的实验研究

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The micro-groove structure on the planar surface has been widely used in the tribology field for improving the lubrication performance, thereby reducing the friction coefficient and wear. However, in the conventional cutting (CC) process, the high-quality, high-precision machining of the micro-groove on titanium alloy has always been a challenge, because considerable problems including poor surface integrity and a high level of the material swelling and springback remain unresolved. In this study, the ultrasonic elliptical vibration assisted cutting (UEVC) technology was employed, which aimed to minimize the level of the material swelling and springback and improve the machining quality. A series of comparative investigations on the surface defect, surface roughness, and material swelling and springback under the CC and UEVC processes were performed. The experimental results certified that the material swelling and springback significantly reduced and the surface integrity obviously improved in the UEVC process in comparison to that in the CC process. Furthermore, for all the predetermined depths of the cut, when the TSR (the ratio of the nominal cutting speed to the peak horizontal vibration speed) was equal to one of twenty four or one of forty eight, the accuracy of the machined micro-groove depth, width and the profile radius reached satisfactorily to 98%, and the roughness values were approximately 0.1 μm. The experimental results demonstrate that the UEVC technology is a feasible method for the high-quality and high-precision processing of the micro-groove on Ti-6Al-4V alloy.
机译：平坦表面上的微沟槽结构已被广泛应用于摩擦学领域，以改善润滑性能，从而降低摩擦系数和磨损。但是，在常规的切割（CC）工艺中，在钛合金上进行高质量，高精度的微槽加工一直是一项挑战，因为存在很多问题，包括不良的表面完整性以及高水平的材料溶胀和膨胀。回弹仍未解决。在这项研究中，采用了超声椭圆振动辅助切削（UEVC）技术，旨在最大程度地减少材料溶胀和回弹，并提高加工质量。在CC和UEVC工艺下，对表面缺陷，表面粗糙度以及材料溶胀和回弹进行了一系列比较研究。实验结果证明，与CC工艺相比，UEVC工艺的材料溶胀和回弹显着降低，表面完整性得到明显改善。此外，对于所有预定的切削深度，当TSR（标称切削速度与峰值水平振动速度的比）等于二十四分之一或四十八分之一时，加工出的微槽的精度深度，宽度和轮廓半径令人满意地达到98％，并且粗糙度值约为0.1μm。实验结果表明，UEVC技术是对Ti-6Al-4V合金微槽进行高质量，高精度加工的一种可行方法。

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