Theoretical studies of the “Workpiece-tool” system vibroacoustic dynamics of the turning group woodworking machines
Abstract In the woodworking industry, the issue of noise reduction is one of the fundamental ones. In most cases, it is an indicator of equipment and products quality, in addition, it negatively affects the performance and irritates the nervous system of machine operators. [1]. The cause of noise is the process of cutting tool interaction with wood and it also depends on the type of wood cutting tool. For wood manufacturing, the blade and abrasive cutting tools are used. The blade instrument has a specified number of fixed shape blades and is divided into disk, cylindrical, conical and plate-shaped ones according to the shape of the body. The abrasive cutting tool on the working surface contains an indefinite number of abrasive material particles. [2]. The edge of the cutter interacts with the surface under work, along the entire width, the cutting direction is perpendicular to the cutting edge. With a small cutting depth, this does not cause significant sound vibrations, but with intensive technological modes of the treated surface, this factor is of great importance in generating noise.There are a lot of works devoted to the study of different cutting tool dependence and noise characteristics [3-7]. For example, in [8] it was experimentally proved that the noise level increases by 1-5 dBA with an increase in the number of knives from 2 to 4. This article presents the results of the acoustic system theoretical studies “manufactured workpiece cutting tools” for cantilever fixing of the workpiece of turning group woodworking machines.