Method and apparatus for damping bending vibrations of cylinders

Details Method and apparatus for damping bending vibrations of cylinders Method and apparatus for damping bending vibrations of cylinders

1995-08-04

1997-01-21

Hilten, John S.

Printing

Rolling contact machines

Rotary

101212, B41F 500

Patent

active

055951171

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.

REFERENCES:
patent: 4640190 (1987-02-01), Holzapfel
patent: 4739702 (1988-04-01), Kobler
patent: 5226365 (1993-07-01), Wieland
patent: 5235909 (1993-08-01), Gerstenberger et al.

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