Chatter frequencies of micromilling processes: Influencing factors and online detection via piezoactuators
Chatter frequencies of micromilling processes: Influencing factors and online detection via piezoactuators
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DOI：
10.1016/j.ijmachtools.2011.12.001
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发表时间：
2012-05
影响因子：
14
通讯作者：
Yinuo Shi;F. Mahr;U. Wagner;E. Uhlmann
中科院分区：
文献类型：
--
作者：
Yinuo Shi;F. Mahr;U. Wagner;E. Uhlmann
微铣削加工中的颤振频率受各种结构因素和切削条件的影响。本文通过实验和解析解研究了微立米尔斯铣刀的阻尼特性、装夹条件和刀柄长度等因素的影响。众所周知，通过实验确定微铣削系统的刀具尖端动力学并由此预测颤振稳定性是具有挑战性的。本文提出了一种新的在线颤振检测方法。使用外部激励，通过压电执行器，颤振频率可以确定轴向切削深度低于实际的稳定性边界。
The chatter frequencies in micromilling operations are affected by various structural factors and cutting conditions. In this paper the influences of damping properties, clamping conditions, and the shank length of microend mills are investigated by experiments and analytical solutions. As is well-known, it is challenging to experimentally identify the tool tip dynamics of a micromilling system and thus to predict the chatter stability. This paper presents a new measuring method for online chatter detection. Using external excitations via piezoelectric actuators, chatter frequencies can be identified with an axial depth of cut lower than the actual stability boundary.