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

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.