A method to predict position-dependent structural natural frequencies of machine tool

被引：35
作者：
Luo, Bo [1 ]
Pan, Dawei [1 ]
Cai, Hui [1 ]
Mao, Xinyong [1 ]
Peng, Fangyu [1 ]
Mao, Kuanmin [1 ]
Li, Bin [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Natl NC Syst Engn Res Ctr, Wuhan 430074, Hubei Province, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Natl Engn Res Ctr Mfg Equipment Digitizat, Wuhan 430074, Hubei Province, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 2015年 / 92卷
基金：
中国国家自然科学基金;
关键词：
Machine tool structure; Dynamic properties; Natural frequencies; Active excitation modal analysis; OPERATIONAL MODAL-ANALYSIS; DYNAMIC-BEHAVIOR; STABILITY;
D O I：
10.1016/j.ijmachtools.2015.02.009
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Machine tool structure has a strong influence on the dynamic properties of the tool. The change of a machine tool's structure will cause variations in the dynamic parameters of the entire tool, such as its natural frequency, which will result in changes to the stability of the tool and poor machining quality. Thus, a study on the variations of machine tool dynamics is essential for high performance cutting. In this paper, using the mass change method, a basic mathematical model for predicting the natural frequency change resulting from structural change was presented followed by an experimental validation of the model. The mathematical model indicates that structural change will lead to the outward variation of the natural frequency, which is essentially related to the change of the squared mode shape values between the original position and the modified position of the moving component With this natural frequency change rate prediction model, the natural frequency in the case of structural change can be easily predicted. The predicted results indicate that the positional change of different moving components has differing influences on the natural frequency of the machine tool. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：72 / 84
页数：13
相关论文
共 15 条
[1]   Tool point dynamics prediction by a three-component model utilizing distributed joint interfaces [J].
Ahmadian, Hamid ;
Nourmohammadi, Mostafa .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2010, 50 (11) :998-1005
[2]  
[Anonymous], JPN SOC MECH ENG
[3]  
Batel M, 2002, SOUND VIB, V36, P22
[4]   Scaling Mode Shapes in Output-Only Systems by a Consecutive Mass Change Method [J].
Fernandez, P. ;
Reynolds, P. ;
Lopez-Aenlle, M. .
EXPERIMENTAL MECHANICS, 2011, 51 (06) :995-1005
[5]  
Heylen W., 1995, MODAL ANAL THEORY TE
[6]   Simulation of dynamic properties of a spindle and tool system coupled with a machine tool frame [J].
Kolar, Petr ;
Sulitka, Matej ;
Janota, Miroslav .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2011, 54 (1-4) :11-20
[7]   Position-Dependent Multibody Dynamic Modeling of Machine Tools Based on Improved Reduced Order Models [J].
Law, Mohit ;
Phani, A. Srikantha ;
Altintas, Yusuf .
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 2013, 135 (02)
[8]   Rapid evaluation and optimization of machine tools with position-dependent stability [J].
Law, Mohit ;
Altintas, Yusuf ;
Phani, A. Srikantha .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2013, 68 :81-90
[9]   A new approach to identifying the dynamic behavior of CNC machine tools with respect to different worktable feed speeds [J].
Li, Bin ;
Luo, Bo ;
Mao, Xinyong ;
Cai, Hui ;
Peng, Fangyu ;
Liu, Hongqi .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2013, 72 :73-84
[10]   Effect of preload of linear guides on dynamic characteristics of a vertical column-spindle system [J].
Lin, Ching Yuan ;
Hung, Jui Pin ;
Lo, Tzuo Liang .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2010, 50 (08) :741-746
12