Abstract <p>This article considers the main issues related to the results of an experimental study aimed at investigating the efficiency of precision control and the dimensional wear index of the tool when modeling the process of shave–rolling cylindrical gears during turning with a special combined cutting and deforming tool—a cutter of a cylindrical workpiece divided into working sections. Significant attention is paid to the analysis of the experimental results, which makes it possible to simulate in laboratory conditions the process of gear machining of a sufficiently large batch of gearwheels. The main precision parameters of machining the workpiece sections are determined, and the boundaries of the onset of technological wear of the tool are revealed depending on one of the key design parameters of the combined tool—the angle of inclination of the walls of the chip groove.</p>