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Simulation of Chatter Vibrations in Reaming

[+] Author Affiliations
M. Sajjadi, M. R. Movahhedy

Sharif University of Technology, Tehran, Iran

Paper No. IMECE2007-43028, pp. 441-447; 7 pages
doi:10.1115/IMECE2007-43028
From:
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 3: Design and Manufacturing
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4297-5 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME

abstract

A time domain approach is used to study the cutting conditions in reaming process that leads the system to regenerative chatter vibrations. The dynamic analysis of the system includes inertia of the tool, centripetal and Coriolis terms, damping and the first mode bending of reamer. A model of cutting forces proportional to chip cross sectional area and process damping proportional to cutting speed is considered. Numerical simulation based on the Euler integration scheme is carried out to obtain time domain solution of the equation. Despite linearization in force modelling, the model is nonlinear due to the change in the tool engagement area. Another nonlinearity included in the model jumping out of is the tool from cutting. The results of this model are presented and compared to the results of a linear model regenerated in time domain from previous works.

Copyright © 2007 by ASME

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