Receptance Coupling for Tool Point Dynamics Prediction on Machine Tools
Receptance Coupling for Tool Point Dynamics Prediction on Machine Tools
复制标题
用于机床刀点动态预测的接收耦合
DOI：
10.3901/cjme.2011.03.340
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
张俊
中科院分区：
文献类型：
--
作者：
张俊
颤振一直是高速加工成功实施的主要障碍。刀点的频响函数（FRF）是识别无颤振切削工况的关键。为了快速获取机床不同部件组合的频响系数，通常将机床整体分解为若干个部分，而将刀具槽形部分作为均匀梁处理，忽略相关差异。本文提出了一种利用接收耦合子结构分析技术预测机床-主轴-刀柄-刀具组合的动态响应的新方法，该组合分为机床-主轴、刀柄和刀柄以及刀具带槽部分三部分。采用冲击试验测量机床主轴的接受度，采用Timoshenko梁模型对刀柄和刀柄进行动力学分析，采用有限元法计算刀具槽形部分的接受度。使用等效直径的凹槽部分截面的近似也被处理。采用子结构法对所有的个体接收信号进行耦合。在三种不同的工具伸出长度下，对预测的装配接收度进行了实验验证。结果还表明，等效直径梁模型达到了可接受的精度。该方法有助于工业中刀具点动态的快速预测。
Chatter has been a primary obstacle to the successful implementation of high speed machining. The frequency response function(FRF) of the tool point is crucial for identification of chatter free cutting conditions. In order to quickly acquire the FRF of the different components combinations of machine tool, the assembly of machine tool was always decomposed into several parts, where the fluted portion of tool, however, was always treated as a uniform beam, and the associated discrepancy was ignored. This paper presents a new method to predict the dynamic response of the machine-spindle-holder-tool assembly using the receptance coupling substructure analysis technique, where the assembly is divided into three parts: machine-spindle, holder and tool shank, and tool's fluted portion. Impact testing is used to measure the receptance of machine-spindle, the Timoshenko beam model is employed to analyze the dynamics of holder and tool shank, and the finite element method(FEM) is used to calculate the receptance of the tool's fluted portion. The approximation of the fluted portion cross section using an equivalent diameter is also addressed. All the individual receptances are coupled by using substructure method. The predicted assembly receptance is experimentally verified for three different tool overhang lengths. The results also show that the equivalent diameter beam model reaches an acceptable accuracy. The proposed approach is helpful to predict the tool point dynamics rapidly in industry.
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DOI：
10.1016/s0890-6955(03)00088-9
发表时间：
2003-07-01
影响因子：
14
作者：
Park, SS;Altintas, Y;Movahhedy, M
通讯作者：
Movahhedy, M
影响因子：
4.7
作者：
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DOI：
10.1016/j.ijmachtools.2006.08.003
发表时间：
2007-07
影响因子：
14
作者：
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DOI：
10.1016/j.precisioneng.2008.03.003
发表时间：
2009
影响因子：
3.6
作者：
Sinan Filiz;C. Cheng;K. Powell;T. Schmitz;O. B. Ozdoganlar
通讯作者：
Sinan Filiz;C. Cheng;K. Powell;T. Schmitz;O. B. Ozdoganlar
DOI：
10.1016/s0007-8506(07)62119-2
发表时间：
2001
期刊：
CIRP Annals
影响因子：
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作者：
T. Schmitz;M. Davies;K. Medicus;J. Snyder
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T. Schmitz;M. Davies;K. Medicus;J. Snyder