Identification of Dynamic Properties of Boring Bar Vibrations in a Continuous Boring Operation

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Full text:
Author(s): Linus Andrén, Lars Håkansson, Anders Brandt, Ingvar Claesson
Title: Identification of Dynamic Properties of Boring Bar Vibrations in a Continuous Boring Operation
Journal: Mechanical Systems & Signal Processing
Year: 2004
Volume: 18
Issue: 4
Pagination: 869-901
ISSN: 0888-3270
Publisher: Academic Press
ISI number: 000221440200010
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
http://www.tek.bth.se/
Authors e-mail: lar@bth.se, lha@bth.se, anders.brandt@saven.se, icl@bth.se
Language: English
Abstract: Vibrations in internal turning operations are usually a cumbersome part of the manufacturing process. This article focuses on the boring bar vibrations. Boring bar vibrations in alloyed steel, stainless steel and cast iron have been measured in both the cutting speed direction and the cutting depth direction with the aid of accelerometers. The dynamic response of a boring bar seem to be a time varying process that exhibits non-linear behaviour. The process is influenced by non-stationary parameters that are not under the control of the operator or experimenter. The vibrations are clearly dominated by the first resonance frequency in one of the two directions of the boring bar. The problem with force modulation in rotary machinery, which appears as side band terms in the spectrum, is also addressed. Furthermore, the resonance frequencies of the boring bar are correlated to an Euler-Bernoulli beam model.
Subject: Signal Processing\Active Noise and Vibration Control
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