Actuator placements and Variations in the Control Path estimates in the Active Control of Boring Bar Vibrations

Document type: Conference Papers
Peer reviewed: Yes
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Author(s): Linus Andrén, Lars Håkansson, Ingvar Claesson
Title: Actuator placements and Variations in the Control Path estimates in the Active Control of Boring Bar Vibrations
Conference name: 11th International Congress on Sound and Vibration
Year: 2004
City: St Petersburg
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, icl@bth.se
Language: English
Abstract: A classical example of chatter prone machining is the boring operation.
Turning under conditions with high vibrations in the cutting tool
deteriorates the surface finish and may cause tool breakage.
Severe noise is also a consequence of the high vibration levels in the
boring bar. Active control is one possible solution to the noise and
vibration problem in boring operations. In boring operations the
boring bar usually have vibration components in both the cutting speed
and the cutting depth direction. The introduction of the control force
in different angles in between the cutting speed and the cutting
depth directions have been investigated. Furthermore, control path estimates
produced when the active boring bar was not in contact with the
workpiece and during continuous cutting operation are compared.
Experimental results indicate that the control force should be introduced
in the cutting speed direction. Although the vibrations are controlled
in just the cutting speed direction the vibrations in the cutting
depth direction are also reduced significantly.
Subject: Signal Processing\Active Noise and Vibration Control
Keywords: Active Vibration Control, Boring Operation
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