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Using Tuned Mass Dampers to Silence a Coordinate Measuring Machine

[+] Author Affiliations
David H. Myszka

University of Dayton, Dayton, OH

Paper No. IMECE2003-42306, pp. 39-43; 5 pages
doi:10.1115/IMECE2003-42306
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Innovations and Applied Research in Mechanical Engineering Technology
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Mechanical Engineering Education
  • ISBN: 0-7918-3722-X | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

Nearly every manufacturing operation relies on servo-controlled automation and inspection machines. The design of these machines requires close attention to the relationships of the mechanical system with the electronic control system. Often, the attributes of one component can augment the weaknesses of another, and vice versa. For example, linear motions are traditionally produced with a rotary motor and ball screw. Recently, linear motors have gained popularity because of their numerous advantages. However, the servo-controls can, more easily, excite resonant frequencies in the machine structure. Therefore, controlling the machine at various speeds can produce excessive structural vibrations as different modes are excited. Thus, improvement in one component causes difficulties with another. An efficient solution is a tuned mass damper (TMD). This is a simple, modular device that consists of a weight, mounted on a spring along with a viscous energy absorber. The tuned mass damper is placed where the undesired vibratory motion is greatest. The size of the mass, spring and damper are adjusted, or tuned, so they oscillate out-of-phase with the structure and reduce the amplitude of vibration. This paper will review the theory of tuned dynamic dampers, and illustrate an application of integrating them into the design of a coordinate measuring machine.

Copyright © 2003 by ASME

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