Wave attenuation effects on the chatter instability of end-milling

被引：7
|
作者：
Ozoegwu, C. G. [1 ]
Omenyi, S. N. [1 ]
机构：
[1] Nnamdi Azikiwe Univ, Dept Mech Engn, Awka, Nigeria
来源：
NOISE CONTROL ENGINEERING JOURNAL | 2013年 / 61卷 / 04期
关键词：
STABILITY;
D O I：
10.3397/1/3761038
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The non-linear force law is incorporated into 2-DOF modelling of chatter in end-milling. Modified full-discretization map is generated for the resulting coupled delay differential equation. The generated map is validated using simulation results of MATLAB dde23. A new theory called "Theory of wave attenuation" is presented. The theory says that the curved surface behind a cutting edge has a flattening effect on some waves generated by the cutting edge. This flattening effect is termed "Wave attenuation effect" since it tends to counteract regenerative effect. Wave attenuation effect is posited as explanation for rise of chatter stability with rise in feed, fall in number of teeth and fall in hardness of workpiece material. (C) 2013 Institute of Noise Control Engineering.
引用
收藏
页码：436 / 444
页数：9
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