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Vibration frequencies in stable and unstable milling
University West, Department of Engineering Science, Division of Manufacturing Processes. (PTW)ORCID iD: 0000-0001-9331-7354
2015 (English)In: International Journal of Machine Tools and Manufacture, ISSN 0890-6955, Vol. 90, 44-49 p.Article in journal (Refereed) Published
Abstract [en]

Vibration frequencies in machining may be employed for calculation of natural frequencies of the dominant modes in chatter and selection of chatter-free spindle speeds with large material removal rates. In this approach, it is important to investigate the relationship between the vibration frequencies, the natural frequencies, spindle speeds and depth of cuts for both stable and unstable cutting conditions. In this paper, the dominant poles of the closed loop time delay differential equation of a milling operation are calculated by successive sectioning of the complex plane and using Cauchy's argument principle. Vibration frequency and damping ratio of the closed loop machining system for each cutting condition is calculated based on the position of the dominant pole on the complex plane which provides 3D plots of the vibration frequency and closed loop damping ratio over any range of depth of cuts and spindle speeds. Finally, the findings of the analytical approach are compared to a machining experiment and a time domain simulation and differences and similarities in their predictions are discussed.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 90, 44-49 p.
Keyword [en]
Milling, Cauchy's argument principle, Time domain simulation
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-7177DOI: 10.1016/j.ijmachtools.2014.12.004ISI: 000349725700005Scopus ID: 2-s2.0-84918493158OAI: oai:DiVA.org:hv-7177DiVA: diva2:772130
Projects
InnKa
Funder
EU, European Research Council
Available from: 2014-12-16 Created: 2014-12-16 Last updated: 2016-11-21Bibliographically approved

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Eynian, Mahdi

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Citation style
  • apa
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  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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  • asciidoc
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