Damping Cutters with Variable Rigidity

Abstract

Purpose of research. The most important task in the field of mechanical engineering is to increase production efficiency through the rational use of equipment, increase in labor productivity, and reduce the labor intensity of technological operations while ensuring the required quality. In manual production, only the working movements of the tool are mechanized. Installation, adjustment and replacement of the tool, as well as control over its condition, are carried out by the operator or the fitter. The solution to the problem of increasing the productivity of turning operations is possible only by automating auxiliary movements.One of several existing ways to reduce non-regrowth time is the automatic replacement of non-regrowth cutting inserts in turning tools. However, the known designs of such assembled cutters do not allow achieving the required quality of processing due to the ineffectiveness of damping vibrations arising during the cutting process. The machining accuracy during cutting largely depends on the design of the tool and the materials used in its manufacture. These materials in the construction of the tool dissipate vibration energy, thus reducing vibration and ensuring the required accuracy.The purpose and objectives of the development are to improve the quality of processing and tool life through design solutions that increase the rigidity of the cutters and significantly damping vibrations during turning. Methods. Use of high damping material to reduce vibration.Results. Increasing the efficiency of damping vibrations of the cutter due to vibration isolation of its prefabricated parts from the holder with a material with high damping.Conclusion. The proposed damping cutter with automatic change of the cutting insert allows you to achieve a technical result to improve the quality of processing, tool life and increase time between insert changes.