中文

Journal of Applied Sciences ›› 2005, Vol. 23 ›› Issue (5): 530-534.

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Vibration Characteristics of Multi-body System in NC Lathe

WU Nan-xing1,2, SUN Qing-hong1, YU Dong-ling2   

  1. 1. Department of Mechanical Engineering, Southeast University, Nanjing 210096, China;
    2. Department of Mechanical Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China
  • Received:2004-04-18 Revised:2005-04-18 Online:2005-09-30 Published:2005-09-30

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Abstract: Based on the theory of multi-body system, the mainshaft system of high-speed high-precision NC la the is investigated.It is treated as a coupled rigid-flexible multi-body system made of rigid and elastic bodies linked together in a specific manner.A dynamic model is established.Computation of vibration characteristics is carried out, and the computation results obtained using the multi-body system theory and the traditional lu mped mass method are compared.Results show that the developed mainshaft system of NC lathe is always within a stable and reliable operating area.Theoretical bases for application of the method to other multi-body systems are shown.

Key words: multi-body system, NC lathe, mainshaft system, vibration characteristics, transfer matrix method

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