Design of a tunable mass damper for mitigating vibrations in milling of cylindrical parts

作     者：Heng YUAN Min WAN Yun YANG 

作者机构：School of Mechanical Engineering Northwestern Polytechnical University State IJR Center of Aerospace Design and Additive Manufacturing Northwestern Polytechnical University 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2019年第32卷第3期

页      面：748-758页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the National Natural Science Foundation of China(No.51675440 and 51705427) National Key Research and Development Program of China(No.2017YFB1102800) the Fundamental Research Funds for the Central Universities of China(No.3102018gxc025) 

主　　题：Chatter Milling Mitigation of vibrations Stability Tunable mass damper (TMD) 

摘      要：Milling the free-end of cylindrical parts, which are vertically fixed on the machine table,often suffers from large chatter vibrations. This kind of phenomenon is harmful to the cutting process. Therefore, it is of great importance to develop means to suppress these undesirable *** paper proposes a new idea for designing a tunable mass damper(TMD) to reduce vibrations in milling of cylindrical parts. Frequency response function(FRF) of the milling system is derived to comprehensively reveal the influence of both the dynamic response of the machine tools and the TMD. Critical axial depth of cut, which is usually used to characterize the process stability, is formulated by considering the FRFs of both the milling system itself and the TMD. Maximization of critical axial depth of cut is taken as objective function, while kernel dynamic parameters of TMD,which are involved in the derived expression of critical axial depth of cut, are extracted as designable variables. Optimization procedure is carried out to adjust the parameters of TMD by using sequential quadratic programming algorithm. A series of experiments with a designed passive TMD validate that the design has a good performance in reducing vibrations and improving stability of milling process.