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In industrial practice, an increase in the use of five-axis milling is observed, especially during the production of components with complex shapes, such as rotors, blades and dies. The machining of such parts is most often carried out in a spherical milling strategy (fig. 1a). It allows you to make any shape, but it is characterized by very low efficiency. That is why new milling designs are being sought, which will enable the increase of the surface machining efficiency. One of such constructions is a barrel mill with a repeatedly increased radius of the cutting edge shape rn (fig. 1b). This solution contributes to increasing the axial infeed of br (machining path width), and thus repeatedly increasing the surface machining efficiency. However, the change in the axial infeed results in a significant increase in the crosssection area of the cutting layer and the effective cutting edge length [1, 5, 6, 8, 10]. In addition, in the case of a barrel milling cutter, the curvature radius of the machined surface influences the area of the cutting layer (fig. 2). Depending on the sign of curvature ("+" convex, "-" concave) and values, the conditions of contact between the tool and the workpiece change [9].

Simulation testing of cutting force in the process of barrel milling machining