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Unique regenerative chatter in wiper-turning operation with burnishing process: Part 2: Experimental verification of predicted generation mechanism, critical stability, and characteristics
Precision Engineering ( IF 3.6 ) Pub Date : 2020-06-18 , DOI: 10.1016/j.precisioneng.2020.05.012
Mitsunori Hirose , Takehiro Hayasaka , Eiji Shamoto

In this paper, the predicted generation mechanism, chatter stability, and characteristics of the unique regenerative chatter with the burnishing process in wiper-turning operations are verified experimentally. It was found in the first part of the paper that the vibration regenerates in the burnishing process by the wiper part of the insert causing a novel type of chatter. In this second part, this chatter phenomenon is investigated in an experimental manner to verify its mechanism. The specific burnishing force, which is a gain factor characterizing the burnishing process, is determined by the Hertzian contact law. In addition, the specific cutting force is measured by a cutting test, the compliance of the flexible structure is measured by a hammering test, and the residual compliance is measured by a static indentation test. Then, experiments are conducted where the tilt angle and the feed rate are varied to find the critical stability. The conducted chatter experiments prove that the predicted generation mechanism, critical stability, and characteristics are true.



中文翻译:

带有抛光过程的雨刮器转向操作中独特的再生颤振:第2部分:预测发电机理,临界稳定性和特性的实验验证

本文通过试验验证了雨刮器转向操作中产生的光泽的预测机理,颤振稳定性以及独特的再生颤振特性。在本文的第一部分中发现,在抛光过程中,由于刀片的刮水器部分而产生的振动会重新产生一种新型的振颤。在第二部分中,以实验方式研究了这种颤振现象,以验证其机理。比抛光力是表征抛光过程的增益因子,由赫兹接触定律确定。另外,通过切削试验来测量比切削力,通过锤击试验来测量柔性结构的柔度,并且通过静态压痕试验来测量残余柔度。然后,进行实验,其中改变倾斜角和进给速度以找到临界稳定性。进行的颤振实验证明,预测的生成机理,临界稳定性和特性是真实的。

更新日期:2020-06-18
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