Milling stability prediction of a hybrid machine tool considering low-frequency dynamic characteristics
Milling stability prediction of a hybrid machine tool considering low-frequency dynamic characteristics
复制标题
考虑低频动态特性的混合动力机床铣削稳定性预测
DOI：
10.1016/j.ymssp.2019.106364
复制
发表时间：
2020
影响因子：
8.4
通讯作者：
Gao Ying
中科院分区：
文献类型：
--
作者：
Yu Guang;Wang liping;Wu Jun;Gao Ying
Stability lobe diagram (SLD) is an important tool to select the spindle speed and axial cutting depth to avoid chatter vibration. For a parallel or hybrid machine tool, the low-frequency dynamic characteristics have a great impact on the SLD and need to be taken into account. One of the major issues related to dynamics analysis is the effective dynamic model of parallel mechanisms, since the stiffness of passive joints varies at different orientations and the structures of components are complex. This paper presents a method to establish an accurate dynamic model and considers the low-frequency characteristics to predict SLD. In this paper, an approach is put forward to get the stiffness and mass matrices of components with variable cross-sections and a structural dynamic model of the parallel mechanism is developed, which innovatively considers the variable stiffness characteristics of the passive joint under different loads. Based on the structural dynamic model, the frequency response function (FRF) of the moving platform is obtained and the results are validated through comparison with those of the hammer test. Using receptance coupling substructure analysis (RCSA) method, the machine-spindle-holder-tool system is divided reasonably and the FRFs at the tool tip are obtained to predict the SLD. It is shown that the low-frequency dynamic characteristics of hybrid machine tools have a great influence on the stability boundary of machine tools, mainly at the low speed region.
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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
DOI：
10.1016/j.ijmachtools.2010.01.003
发表时间：
2010-05-01
影响因子：
14
作者：
Ding, Ye;Zhu, LiMin;Ding, Han
通讯作者：
Ding, Han
影响因子：
1.5
作者：
D. Stewart
通讯作者：
D. Stewart
DOI：
10.1016/j.ijmachtools.2005.05.026
发表时间：
2006-03
影响因子：
14
作者：
M. Movahhedy;Javad M. Gerami
通讯作者：
M. Movahhedy;Javad M. Gerami
考虑非线性关节刚度的三自由度并联机械臂刚度建模方法
影响因子：
5.2
作者：
Guang Yu;Liping Wang;Jun Wu;Dong Wang;Congjun Hu
通讯作者：
Congjun Hu