RESEARCH AND IMPROVEMENT OF PREFABRICATED SLOTTING CUTTERS FOR CROSS TURNING ON HEAVY LATHES

The article presents studies of prefabricated slotting cutters for heavy lathes and rotary machines designed for cutting deep grooves with a width of 32 to 40 mm in parts such as rotating bodies. The research methods used were simulation modeling of the three-dimensional stress-strain state of prefabricated cutter structures, simulation modeling of the dynamic behavior of tools: harmonic analysis (analysis of natural frequencies); transient process of loading the cutting plate when cutting the tool into a part (reaction to a step load); response of a structure to a harmonic load. The finite element method was used as an experimental tool. In the process of research, a comparative analysis of the designs of prefabricated cutters was carried out in terms of the strength of the tool cutting plate and the rigidity of its fastening in the tool body. The influence of the method of basing the cutting insert in the tool body, design parameters and design parameters of the elements of the fastening unit are analyzed. A constructive improvement of the mechanical fastening unit has been proposed.