Method and apparatus for damping bending vibrations of cylinders in a printing press
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United States of America Patent
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Jan 21, 1997
Grant Date -
N/A
app pub date -
Aug 4, 1995
filing date -
Aug 9, 1994
priority date (Note) -
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Abstract
A method and apparatus for damping bending vibration in a group of cylinders in a printing press is provided. In accordance with the method, the frequencies of the fundamental vibration modes are initially determined and then dynamic dampers are disposed so as to damp the vibrations. In accordance with the apparatus, at least one dynamic damper is disposed inside the envelope of a cylinder in the group of cylinders. It may be formed as a mass held elastically inside the envelope and having a vibration frequency that corresponds to the frequency of a fundamental vibration mode of the group of cylinders.
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