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Study of Chatter Stability in Boring Process Using Operating Deflection Shape

[+] Author Affiliations
Zohreh Mohammadi, Mohammad R. Movahhedy

Sharif University of Technology, Tehran, Iran

Paper No. IMECE2010-38632, pp. 947-953; 7 pages
doi:10.1115/IMECE2010-38632
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 3: Design and Manufacturing, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4427-4
  • Copyright © 2010 by ASME

abstract

Chatter is a limiting factor in machining systems with adverse effects for workpiece surface, tool and machine life and material removal rate. Proper modelling of this phenomenon requires that the dynamic characteristics of the machining system is known. It is common to obtain the dynamic of the system by modal tests in stationary condition. However, the vibration characteristics of a machine change between its operating and resting mode. The goal of this work is to study vibrations in boring using the vibrational characteristic in operational conditions using the operating deflection shape method. In this paper, vibration characteristics of the in the boring bar is obtained by both modal analysis and operating deflection shape methods and the results are compared. The results show that differences exist between the two conditions that can be small or large in different machining conditions.

Copyright © 2010 by ASME

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