OBRABOTKAMETALLOV technology Vol. 26 No. 2 2024 Fig. 4. Schematic representation of a mill with indication of the main geometric characteristics Ta b l e 4 Values of the main geometric characteristics of the H10F carbide mill d, mm d1, mm l, mm L, mm α, degree γ, degree ω, degree z, pcs 12 12h6 26 84 +10 +8 40 4 carry out measurements to understand the state of the microgeometry of the cutting edges. Measurements were made on all working edges located on the screw surface, while retreating from the end by 2–3 mm (Fig. 5). Test bench and work plan The tests were carried out on the milling machining center of the DMU 50 model, manufactured by DMG (Germany). According to the passport data and production experience, the machine has a sufficiently high rigidity for roughing steel in modes with accelerated material removal. The maximum spindle speed nmax is 10,000 min –1, and the feed rate is up to 30,000 mm/min. The specimen was fixed in a special device mounted within the bearing surface of the dynamometer (Fig. 6). Preliminary modeling of the grip conditions was carried out in order to prevent collisions during Fig. 5. Measuring circuit and example presentation of cutting edge microgeometry parameters
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