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Proceedings Paper

Active chatter supression in an octahedral hexapod milling machine: a design study
Author(s): Jeffrey L. Dohner; Chi-Man Kwan; Mark E. Regelbrugge
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Paper Abstract

This paper describes a design study to determine the feasibility of integrating active control into a milling machine to enhance milling-process performance. The study described herein focuses on the active suppression of chatter instabilities in an Octahedral Hexapod Milling (OHM) machine. Structural dynamics contributing to chatter instabilities were described using calibrated finite element models, which were coupled with a tool-workpiece interaction model for purposes of determining, by simulation, machine performance enhancement due to active control. An active vibration control design to minimize vibration at the tool tip was also integrated into the simulation. Active control subcomponent and actuator size requirements were determined from the modeling and simulations. The study showed that active control is a feasible solution for suppressing chatter instabilities, allowing the metal removal rate of the OHM machine to be increased by roughly a factor of two.

Paper Details

Date Published: 1 May 1996
PDF: 10 pages
Proc. SPIE 2721, Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies, (1 May 1996); doi: 10.1117/12.239144
Show Author Affiliations
Jeffrey L. Dohner, Sandia National Labs. (United States)
Chi-Man Kwan, Intelligent Automation, Inc. (United States)
Mark E. Regelbrugge, Lockheed Martin Missiles and Space Co., Inc. (United States)


Published in SPIE Proceedings Vol. 2721:
Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies
C. Robert Crowe, Editor(s)

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