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Influence of flank texture patterns on the suppression of chatter vibration and flank adhesion in turning operations
Precision Engineering ( IF 3.5 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.precisioneng.2020.12.007
Wataru Takahashi , Tomoki Nakanomiya , Norikazu Suzuki , Eiji Shamoto

In this paper, we propose a practical texture design on the tool flank face for suppressing chatter vibration and flank adhesion. To avoid chatter vibration during cutting, the process damping phenomena can be utilized, where the tool flank face contacts the surface of a finished workpiece to provide a damping effect. As a new technology for an effective process damping, the tool flank texture-assisted technique has been proposed, and its excellent performance in suppressing chatter vibration has been demonstrated. However, issues that can lead to adhesion and tool damage pose challenges from a practical viewpoint. To overcome such issues, this paper proposes new texture geometries that improve the practical performance: parallel line type, vertical line type, and dot type. The results of a series of finite element analyses showed that the effectiveness of process damping depends on the vibration amplitude and wavelength. The proposed flank textures were fabricated on tool flank faces, and turning tests were carried out. The experimental results showed that the proposed tool is stabler than the conventional untextured tool and that it can more effectively improve the critical cutting speed, reduce the vibration amplitude, and decrease the surface roughness after cutting. With the appropriate design of the texture distance, adhesion and tool damage were hardly observed, and a stable and practical cutting could be realized.



中文翻译:

侧面纹理图案对车削时颤振和侧面附着力抑制的影响

在本文中,我们提出了一种实用的刀具侧面纹理设计,以抑制颤振和侧面附着。为了避免切削过程中的颤动,可以利用过程阻尼现象,在这种情况下,工具侧面接触成品工件的表面以提供阻尼效果。作为有效的过程阻尼的新技术,已经提出了工具侧面纹理辅助技术,并且已经证明了其在抑制颤振方面的优异性能。但是,从实用的角度来看,可能导致粘附和工具损坏的问题提出了挑战。为了克服这些问题,本文提出了改善实际性能的新纹理几何形状:平行线型,垂直线型和点型。一系列有限元分析的结果表明,过程阻尼的有效性取决于振动幅度和波长。建议的侧面纹理是在工具侧面上制作的,并进行了车削测试。实验结果表明,所提出的刀具比常规的无纹理刀具更稳定,并且可以更有效地提高临界切削速度,减小振动幅度并降低切削后的表面粗糙度。通过适当设计纹理距离,几乎观察不到粘附力和工具损坏,并且可以实现稳定且实用的切割。实验结果表明,所提出的刀具比常规的无纹理刀具更稳定,并且可以更有效地提高临界切削速度,减小振动幅度,并降低切削后的表面粗糙度。通过适当设计纹理距离,几乎观察不到粘附力和工具损坏,并且可以实现稳定且实用的切割。实验结果表明,所提出的刀具比常规的无纹理刀具更稳定,并且可以更有效地提高临界切削速度,减小振动幅度并降低切削后的表面粗糙度。通过适当设计纹理距离,几乎观察不到粘附力和工具损坏,并且可以实现稳定且实用的切割。

更新日期:2020-12-30
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