Vibration Frequencies in High-Speed Milling Processes or a Positive Answer to Davies, Pratt, Dutterer and Burns
Vibration Frequencies in High-Speed Milling Processes or a Positive Answer to Davies, Pratt, Dutterer and Burns
复制标题
高速铣削过程中的振动频率或对 Davies、Pratt、Dutterer 和 Burns 的肯定答案
DOI：
10.1115/1.1763184
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发表时间：
2004
影响因子：
4
通讯作者：
G. Stépán
中科院分区：
文献类型：
--
作者：
T. Insperger;G. Stépán
构造了高速铣削的稳定性图。确定了新的不稳定区域和振动频率。这些与翻转分岔有关，即周期加倍振动发生在传统的自激振动之外，众所周知的车削或低速铣削具有多个活动齿。将半离散化方法应用于铣削延迟参数激励模型，为机床颤振研究提供了两种已有和实验验证的结果之间的联系。本文所讨论的两个极端模型，即传统的时间无关车削的自主延迟模型和最近引入的时间相关高中断加工的离散映射模型，都是本文所提出的通用方法中的特例。
The stability charts of high-speed milling are constructed. New unstable regions and vibration frequencies are identified. These are related to flip bifurcation, i.e. period doubling vibrations occur apart of the conventional self-excited vibrations well-known for turning or low-speed milling with multiple active teeth. The Semi-Discretization method is applied for the delayed parametric excitation model of milling providing the connection of the two existing and experimentally verified results of machine tool chatter research. The two extreme models in question, that is, the traditional autonomous delayed model of time-independent turning, and the recently introduced discrete map model of time-dependent highly interrupted machining, are both involved as special cases in the universal approach presented in this study.