## 4 Experimental Verification
### Analysis of Influence Law of Milling Temperature  
The average milling temperature values under the combined effects of different micro-texture parameters and different cutting edge blunt radius parameters obtained through orthogonal experiments are shown in Table 5. It can be determined that the influence order of the texture and edge radius parameters on the average milling temperature is as follows: blunt edge radius \(>\) distance from cutting edge \(>\) distance between micro pits \(>\) diameter of micro pits. That is, the radius of the blunt circle has the greatest influence on the average milling temperature, while the diameter of the micro-circular pit has the least influence.  
Figure 8: Texture profile of micro-circular pits.  
Figure 9: Experimental setup diagram. (**a**) Milling temperature acquisition system. (**b**) Workpiece clamping diagram.  
The analysis of the data is shown in Figure 10 shows and the analysis of variance is shown in Table 6. According to the F value in the table, it can be seen that the order of significance level is as follows: edge radius \(>\) distance from blade \(>\) micro-pit spacing \(>\) diameter of micro-pit.  
Figure 10 shows the simulation and experimental comparison of micro-circular pit texture parameters and cutting-edge parameters against average milling temperature. It can be seen from the above that the influence rules of various parameters on milling temperature in simulation and experimental results are basically the same, which shows that the changes of cutting edge and micro-texture parameters do affect the change rules of milling temperature. The deviation between simulation results and experimental results is mainly because of the vibration of machine tool in the experiment and the error in non-linear solution in simulation calculation. As shown in Figure 10a, the average milling temperature increases first and then decreases with the increase of micro-pit spacing. The spacing of micro-pit continues to increase, and the average milling temperature increases first and then decreases again. As shown in Figure 10b, the average milling temperature decreases first, then increases, and then decreases with the increase of the diameter of the micro-round pit. As shown in Figure 10c, as the distance from the cutting-edge increases, the average milling temperature decreases first and then increases. As shown in Figure 10d, with the increase of the cutting-edge radius, the average cutting temperature decreases first and then increases.  
As can be seen from Figure 10, when the average cutting temperature is taken as the evaluation index, the optimal parameters are as follows: the diameter of the micro-circular pits is 40 \(\upmu\)m, the spacing  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Factor Test**} & \multicolumn{2}{c}{**Blunt Circle**} & \multicolumn{2}{c}{**Micro-Texture Parameters/\(\upmu\)m**} & \multicolumn{2}{c}{**Milling**} \\  & **Parameter** & & & **Temperature/\({}^{*}\)C** \\ \cline{2-6}  & **Radius/\(\upmu\)m** & **Diameter** & **Spacing** & **Distance from Blade** & \\ \hline
1 & 20 & 30 & 125 & 90 & 232.62 \\
2 & 20 & 40 & 150 & 100 & 217.35 \\
3 & 20 & 50 & 175 & 110 & 202.16 \\
4 & 20 & 60 & 200 & 120 & 259.26  
between the micro-circular pits is 175 \(\upmu\)m, the distance from the cutting edge is 100 \(\upmu\)m, and the radius of blunt cutting edge is 60 \(\upmu\)m.