System-structural approach to improving the design of cutting tools

Abstract

This article presents a systematic analysis, which involves the study of a cutting tool, its elements, and the relationships between them. An element-by-element analysis of the operating conditions of face mills is presented, where such components as the body part, the shank part, the cutting inserts and their positions are considered as a single system. As for the supersystem, it is a technological system (machine tool, device, workpiece, tool) that is influenced by various factors - active, intermediate, reactive, and derivative. For the analysis, selected standard face mills with round inserts, which are widely used in cutting machining. The influence of each element of a standard face milling cutter on the occurrence of unfavorable cutting conditions was determined and analyzed. On the basis of this analysis, a structural improvement of mill designs was proposed, which resulted in the development of concepts for the development of new designs of milling cutters with round inserts in the following directions: increasing tool stability, machining accuracy and productivity, and improving the quality of the surface layer of the machined surface of the workpiece. The structural approach consists of directions of improvement and the main elements of these directions, proposed expedient changes in technical characteristics and their theoretical justification, development of technical solutions and their implementation, and possible geometric parameters of face mills. As a result of the systemic and structural approach to improving the design of face mills, several variants of mills for hard-to-machine materials have been developed.

Keywords

• system analysis
• face milling cutter
• structural approach
• milling cutter designs