Dynamics modeling and modal experimental study of high speed motorized spindle

Li, YunsongChongqing University,Chongqing Technology and Business University (författare)

This paper presents a dynamical model of high speed motorized spindles in free state and work state. In the free state, the housing is modeled as a rotor with equivalent masses including bearing pedestals, motor stator and rear end cover. As a consequence, a double rotor dynamics can be modeled for high speed motorized spindles by a bearing element which connects the housing and bearing pedestals. In the work state, the housing is fixed and the system becomes a bearing-rotor dynamical model. An excitation-measurement test in the free state is designed to analyze the cross spectral density and auto spectral density of input and output signals. Then the frequency response function of system and coherence function of input and output signals which are used to analyze the inherent characteristics of the double- rotor model can be obtained. The other vibration test in the work state is designed to research the dynamical supporting characteristics of bearings and the effects from bearings on the inherent characteristics of the system. The good agreement between the experimental data and theoretical results indicates that the dynamical model in two states is capable of accurately predicting the dynamic behavior of high speed motorized spindles.

Chen, XiaoanChongqing University (författare)
Zhang, PengChongqing University (författare)
Zhou, JinmingLund University,Lunds universitet,Industriell Produktion,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Production and Materials Engineering,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH,Chongqing University(Swepub:lu)mtov-jzh (författare)
Chongqing UniversityChongqing Technology and Business University (creator_code:org_t)

Ingår i:Journal of Mechanical Science and Technology: Springer Science and Business Media LLC31:3, s. 1049-10561738-494X1976-3824

Av författaren/redakt...: Li, Yunsong; Chen, Xiaoan; Zhang, Peng; Zhou, Jinming

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Produktionstekni ...

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