Budar M. Improving the efficiency of diamond-abrasive tools for processing high-strength composite materials

The object of the research is the process of carbon-carbon compositions finishing with a diamond-abrasive tool with additional degrees of fluency. The dissertation is devoted to the decision of an important scientific and applied problem of increase of efficiency of diamond - abrasive cutting of high - strength composite materials on the basis of rational formation of density, fractionality of elements of a diamond - containing layer of a working surface of the tool by means of laser thermodeformation sintering. To find the optimal carriers of functions as a sequence of clusters with different properties, the method of calculating the unit value of the useful function was applied taking into account the discretization of the main functional surfaces of the product with a diamond layer. Based on the modeling of the interaction of the tool with the surface layer of the composite, the basic requirements for clusters are formulated, regularities of load changes of working surface parts and, accordingly, functional features of clusters of working surfaces of the tool are established, regression equations are obtained to determine their parameters. It is concluded that the most expedient means of ensuring the properties of surfaces is a laser deformation method of forming a surface layer, which requires certain improvements to increase the controllability of the process of formation of the corresponding clusters. The mathematical model of the process has been improved, taking into account for the first time the dynamics of the movement of diamond grains and working bodies. Testing of the developed tools showed their high efficiency in the processing of composites such as KIMF, and the error of the predicted indicators did not exceed 12–15%. The tool, created on the basis of a functional approach using the proposed technique, has a lower rate of damage. To ensure that the properties of the surface clusters correspond to the conditions of further operation of the tool, it is proposed to perform reversible engineering, which is based on the principle of analysis of tool wear during its operation.