Determination of Stressed-Deformed State of Fine Disc Tools with Inner Cutting Section under Conditions of their Pre-Stressing

Abstract

The work is dedicated to investigation of the particulars of stressed-deformed state of fine disc tool with internal cutting section under conditions of its pre-stressing. It was suggested for reduction of tools oscillations at cutting to apply pre-stressing of the tools disc by means of controlling elements. The elements, which control the elements stress allowed to eliminate self-oscillations and resonance oscillations of the tool at high-speed materials cutting. In the paper the problem of evaluation of stress and deformed state of fine disc cutting tools with application of the method of finite elements (FEM) was solved. The article also contains epures of tangential stresses inside the internal contour of disc tools. On the basis of the investigations performed the synthesis for design of the main elements of fine disc tools with inner cutting section was carried out. The performed investigation was aimed at improving of the quality and stability of cutting with fine disc tools under conditions of high-velocity cutting and in presence of a dynamic component of the cutting process, ensuring improvement in durability and productivity of the tool.