# Comprehensive Evaluation Method for High-Performance
## 3 Results and Discussion  
### High-Feed Milling  
During high-feed milling, a significantly higher value of the F\({}_{\mathrm{z}}\) force component was observed compared to the F\({}_{\mathrm{x}}\) and F\({}_{\mathrm{y}}\) components. In Figure 5a, which shows the progression of the F\({}_{\mathrm{z}}\) force component during cutting, the force values increased as the cutting-edge wear progressed. In contrast, in Figure 5b,c, which depicts the progression of the F\({}_{\mathrm{y}}\) and F\({}_{\mathrm{x}}\) force components, the force values were independent of the cutting-edge wear. The differences in results between the subsequent trials can be attributed to measurement errors in the data-acquisition system, the dynamic nature of the process, and the short cutting-cycle time. The machine power consumption during machining was read from the graph (Figure 6), which was characterized by the presence of three points, marked in the figure. The first point corresponds to the total instantaneous machine power consumption during the activation of the main spindle rotation. The second point represents the power consumption during the spindle rotation, just before the cutting process begins, and the third point corresponds to the maximum power consumption during cutting for the given trial. The value measured at the third point was used for analysis. In the example presented in the graph, it was 22.86 kW. Regardless of the parameters used, the shape of the graph remained the same, differing only in the maximum values reached. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Parameter** & **Machining** & **f\({}_{\mathrm{z}}\)** & **a\({}_{\mathrm{e}}\)** & **Q** & **Theoretical** & **Spindle** & **Feed Rate** \\
**Set** & **Type** & **[mm/tooth]** & **[mm]** & **q\({}_{\mathrm{p}}\)[mm]** & **[cm\({}^{3}\)/min]** & **Diameter** & **Speed n** & **v\({}_{\mathrm{f}}\)** \\
2 & High feed & 0.3 & 100\% & 0.5 & 267.39 & 70.54 & 3610 & 7581 \\
2 & High feed & 0.4 & 100\% & 0.5 & 356.52 & 70.54 & 3610 & 10,108 \\
3 & High feed & 0.5 & 100\% & 0.5 & 445.65 & 70.54 & 3610 & 12,635 \\
4 & High feed & 0.3 & 100\% & 1 & 534.78 & 72.8 & 3498 & 7346 \\
5 & Plunging & 0.08 & 1 & - & 142.61 & 80 & 3183 & 1783 \\
6 & Plunging & 0.08 & 1.5 mm & - & 213.91 & 80 & 3183 & 1783 \\
7 & Plunging & 0.08 & 3 mm & - & 427.82 & 80 & 3183 & 1783 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Research plan. Figure 4: Designed milling head with CNGN120712 inserts, mounted in the spindle of the milling center. that the wear of ceramic inserts followed the accelerated wear mechanism. In the initial phase, micro-cracks and chipping of the cutting edges appeared, which is characteristic of ceramic tools. Then, during the stable phase, wear mainly occurred through uniform abrasion of the flank and rake surfaces. In the final phase, the wear mechanism accelerated rapidly, leading to significant chipping and the breaking away of fragments from the cutting edges of the tools. Figure 7 shows the cutting insert after completing the ninth machining pass with the following parameters: \(\mathrm{v_{c}}\) = 800 m/min, \(\mathrm{f_{z}}\) = 0.4 mm/tooth, \(\mathrm{a_{e}}\) = 100% of the tool diameter (70.54 mm in this case), and \(\mathrm{a_{p}}\) = 0.5 mm. On the rake face, chipping was observed, reaching a value of up to 0.85 mm. This distance was measured by drawing a line perpendicular to the cutting edge. No micro-chipping was found on the cutting edge itself, but on the flank face, abrasive wear of up to 1.76 mm was observed. Based on the measurement of cutting-edge wear, the volume of material predicted to be removed during the tool's life cycle (\(\mathrm{G_{max}}\)) was calculated, taking into account the maximum allowable cutting-edge wear value (\(\mathrm{V_{BBmax}}\)) of 3.5 mm, as specified by the manufacturer. The extrapolated volume of material that could be removed before reaching the cutting-edge wear limit was determined to be 106.39 cm\({}^{3}\).