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Title: Modeling and identification of tool holder–spindle interface dynamics
Authors: Namazi, Mehdi
Altintas, Yusuf
Abe, Taro
Rajapakse, R. K. N. D
Keywords: Tool holder
Contact dynamics
Issue Date: 1-Jul-2007
Publisher: Pergamon
Citation: 166
Series/Report no.: International Journal of Machine Tools and Manufacture;vol.47,09,pp.1333-1341
Abstract: The majority of the chatter vibrations in high-speed milling originate due to flexible connections at the tool holder–spindle, and tool–tool holder interfaces. This article presents modeling of contact stiffness and damping at the tool holder and spindle interface. The holder–spindle taper contact is modeled by uniformly distributed translational and rotational springs. The springs are identified by minimizing the error between the experimentally measured and estimated frequency response of the spindle assembly. The paper also presents identification of the spindle's dynamic response with a holder interface, and its receptance coupling with the holder–tool stick out which is modeled by Timoshenko beam elements. The proposed methods allow prediction of frequency-response functions at the tool tip by receptance coupling of tools and holders to the spindle, as well as analyzing the influence of relative wear at the contact by removing discrete contact springs between the holder and spindle. The techniques are experimentally illustrated and their practical use in high speed milling applications is elaborated.
URI: http://localhost:8080/jspui/handle/123456789/163
ISSN: 0890-6955
Appears in Collections:Research Papers - Department of Civil Engineering
Research Papers - SLIIT Staff Publications

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