science-review.ru
Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440
ISSN 2500-0799
ПИ №ФС77-57440
THEORETICAL THESISES OF NOISE EMISSIONS OF CIRCULAR SAW BLADE DURING WOOD CUTTING
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Circular saw of woodworking machines is most noisy woodworking equipment. Workplace noise level amount 110-115 dBA. Circular saw blade is principal working unit and the main noise source. Empirical relations of sound power from variable parameters of wood cutting is was deduced, but is do not found a the physical nature of the noise generation process. Relation of sound power from wood cutting parameters is deduced in this scientific paper. This relation is based on solution of equation of circular saw blade vibration under the influence cutting force. Circular saw blade there is round plate with two concentric circles on the sides. Circular saw blade is under impulse pressure during wood cutting. Relations of sound power, emitted circular saw through his vibration, deduced in this work. Is deduced in approximation with some assumptions. Thickness of circular saw blade, sum of sawtooths, coefficient of blade material loss and cutting speed have influence with emission noise.