Open Access
Table 1
L27 orthogonal array.
| Levels | Control parameters | Unit | Levels | ||
|---|---|---|---|---|---|
| 1 | 2 | 3 | |||
| 1 | Spindle speed (N) | rev/min | 750 | 1000 | 1250 |
| 2 | Feed rate (f) | mm/rev | 0.05 | 0.10 | 0.125 |
| 3 | Point angle (2ρ) | ° | 118 | 135 | 140 |
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