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NOISE REDUCTION IN CIRCULAR WOODWORKING MACHINES IN THE PRODUCTION OF WOOD COMPONENTS

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Author(s): V. F. Asminin | D. S. Osmolovsky

Journal: Scientific Herald of the Voronezh State University of Architecture and Civil Engineering
ISSN 2075-0811

Volume: 4;
Issue: 4;
Start page: 69;
Date: 2012;
Original page

Keywords: vibration-damping | noise reduction | circular woodworking machine | seals with dry friction | saw disk | abrasive particles

ABSTRACT
Statement of the problem. Woodworking machinery is extensively used in the production of wood components for the construction of objects for various purpose. Operation of woodworking machinery is accompanied by high noise emissions. Circular woodworking machines are the most problematic in terms of their noise characteristics, and also most widespread. The dominating noise source is a saw disk.Results. Vibration-damping structure is suggested in the form of seals with dry friction placed be-tween clamping flanges and a saw disk. Vibration-damping properties of seals are experimentally examined using H. Oberst’s method. The analysis amounted to establishing how the value of the total loss coefficient is affected by the following factors: seal foundation type, frequency of excitation, particles size (dispersion), temperature factor. Based on the obtained results, an experimental study of acoustic efficiency of vibration-damping seals with dry friction was performed, varying being such parameters as the particles size (dispersion) and seal foundation type.Conclusions. The construction of vibration-damping seals with dry friction with the appropriate particle dispersion and foundation material is based on the results of the experimental study. The suggested construction has considerable advantages over polymeric seals.

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