OBRABOTKAMETALLOV technology Vol. 26 No. 2 2024 Fig. 7. Appearance of a mill prematurely removed from testing and a fragment of the cutting-edge wear Fig. 8. Schematic representation of milling modes The components of the cutting force were measured using a threecomponent dynamometer model 9257BA Kistler (Switzerland) (Fig. 9). The duration of the data collection cycle was 5 seconds from the moment of steady cutting, that is, after all the teeth of the milling cutter had already taken part in machining the specimen. The registration of forces was carried out with a frequency of 10 kHz signal reception. The rotation of the milling cutter was always performed clockwise. In the built-in software of the Kistler dynamometer, the symbols Fz (tangential component of the cutting force, i.e. acting vertically downwards for conventional turning), Fx (axial component of the cutting force, i.e. acting in a horizontal plane along the axis of rotation of the lathe spindle from left to right for conventional turning), Fy (radial component of the cutting force, i.e. acting in a horizontal plane and perpendicular to the axis of rotation of the spindle of the lathe towards the operator for conventional turning)which indicate the direction of forces characteristic of classical turning. These symbols are indicated on the graphs of changes in these components on the dynamometer monitor. In Fig. 9, it is indicated by the Fig. 9. Flow pattern of cutting forces on the mill relative to the coordinate system of the dynamometer
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