Patent ID: 8739667
Filing Date: 2014-06-03
Classification: B26D,B26F,Y10T

Abstract:
1. A rotary cutting apparatus, comprising a frame; a first rotary device comprising a first shaft concentrically arranged about a first rotational axis and a first drum concentrically arranged on said first shaft, said first shaft provided with a first pair of bearing housings arranged on either sides of said first drum; and a second rotary device comprising a second shaft concentrically arranged about a second rotational axis, and a second drum concentrically arranged on said shaft, said second shaft provided with a second pair of bearing housings arranged on either sides of said second drum, wherein said first and second rotary devices arranged in said frame in such a way that said first and second axes are substantially horizontal and substantially in the same vertical plane; wherein said second shaft connected to the frame via said second pair of bearing housings, wherein said first shaft associated with said frame via said first pair of bearing housing, said first pair of bearing housings movable relative to said frame in a transverse direction to said first rotational axis by means of a force means, and wherein means is provided for passive vibration attenuation of at least said first shaft, said means being able to reduce vibrations due to impacts of the first drum in relation to said second drum.