Issues concerning vibrations reduction of the industrial drilling machine in the manufacturing processes

摘要

The paper set the differential equations of free vibration for straight helical rods, in a general matrix form, with which determine the pulsation equation as an algebraic equation of n degree. The coefficients of this equation contain geometrical and elastic characteristics including natural degree of torsion bar and also the boundary conditions at the ends. These coefficients provide important information about the machine-tools from the mechanical industry under the action of vibrations, during execution the processing operations on the industrial products.