Research Article
Investigating the Possibility to Reduce the Residual Stress Level in 2.5D Cutting Using Titanium Coated Carbide Ball End Mill
Table 5
Results of calculated TPM and
ratios for microhardness and residual stress.
| Ex. number | Factors | Microhardness | Residual stress | | | Feed direction | Cutting direction | | | | | TPM (HV) | (dB) | TPM (MPa) | (dB) | TPM (MPa) | (dB) |
| 1 | 1 | 1 | 1 | 1 | 264.67 | 48.4514 | −452.31 | −56.2273 | −355.38 | −56.1861 | 2 | 1 | 2 | 2 | 2 | 245.00 | 47.7549 | −242.31 | −58.6666 | −484.62 | −54.2426 | 3 | 1 | 3 | 3 | 3 | 240.00 | 47.6005 | −710.77 | −51.8041 | 274.62 | −62.1076 | 4 | 2 | 1 | 2 | 3 | 287.33 | 49.1667 | −743.08 | −51.0514 | −129.23 | −58.7981 | 5 | 2 | 2 | 3 | 1 | 246.33 | 47.8303 | 371.54 | −63.3554 | −306.92 | −56.8157 | 6 | 2 | 3 | 1 | 2 | 244.67 | 47.7656 | −662.31 | −52.8233 | −80.77 | −59.2685 | 7 | 3 | 1 | 3 | 2 | 286.33 | 49.1369 | 484.62 | −63.9985 | −355.38 | −56.1861 | 8 | 3 | 2 | 1 | 3 | 257.67 | 48.2125 | 355.38 | −63.2595 | −306.92 | −56.8157 | 9 | 3 | 3 | 2 | 1 | 240.00 | 47.5920 | 420.00 | −63.6369 | 436.15 | −63.1440 |
|
|