REDUCING GEARBOX NOISE LEVELS HIGH SPEED VERTICAL DRILLING MACHINES
Drilling machines equipped with various types of gearboxes, their technical and vibroacoustic characteristics. According to various studies, gearboxes are the cause of an increased level of sound radiation that comes from the body parts of the gearbox. The article presents a scheme of energy balance equations for calculating the level of acoustic discomfort during the operation of machines of this type with 9 and 12-speed gearboxes.