THEORETICAL STUDIES OF THE VELOCITIES OF THE VIBRATIONS OF DRILL BITS WOODWORKING DRILLING MACHINES

Abstract

On woodworking machines of the drilling group, drill bits of the following diameters (mm) are used at rotation speeds: SvP2
and SvA-2-ø 50 mm, n = 3000 rpm 4500 rpm; Sv8, Sv12-ø 10-16 mm, n = 2800 rpm; SGVP-ø up to 35 mm, n = 2800 rpm.
Acoustic models are described in detail in [1] as can be seen from the analytical dependences of sound pressure levels to calculate the noise spectra, it is necessary to determine the oscillation velocities of the drill bit at their natural frequencies.