Justification of the implementation of a new method for processing deep holes after core drilling.

Abstract

This article is devoted to a comprehensive study of the process of removing the core from a blind hole after performing a hole drilling operation using a ring drill. Particular attention is paid to analyzing the interaction between the cutting tool and the workpiece material under conditions of high loads and deformations. The research utilizes modern Abaqus software, which allows for detailed modeling of all stages of the technological process. The paper presents an innovative design of a cutting tool with a unique operating principle. The key feature of the development lies in the ability of the tool body to elastically deform under the influence of opposing forces exerted by the workpiece. This ensures coordinated movement of the guiding-supporting part together with the cutting blade towards the rotation axis. The tool operates based on its rotation at a specified frequency in the feed direction, which facilitates efficient removal of the core. A significant advantage of this solution is the absence of moving connections in the design, which considerably increases the reliability and service life of the tool. The developed technology allows for substantial optimization of the process for extracting the central part from a blind hole after ring drilling. This is achieved through rational distribution of loads and minimization of mechanical impact on the workpiece material. Implementation of the proposed method contributes to reduced processing time, lower energy consumption, and improved quality of resulting surfaces. The practical significance of the research lies in the potential application of the developed technology in mechanical engineering, aviation, and automotive industries, where deep drilling operations and subsequent hole processing are widely used.