Research Article
Optimizing Cutting Conditions and Prediction of Surface Roughness in Face Milling of AZ61 Using Regression Analysis and Artificial Neural Network
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 |  | Sample ID | Group | Spindle speed (rpm) | Depth of cut (mm) | Table feed (mm/min) | Surface Ra (μm) | Material removal rate (MRR) mm3/min |  | 
 |  | 1 | 1 | 500 | 0.5 | 50 | 0.185 | 1000 |  | 2 | 500 | 0.5 | 100 | 0.226 | 2000 |  | 3 | 500 | 0.5 | 150 | 0.332 | 3000 |  | 4 | 500 | 0.5 | 200 | 0.403 | 4000 |  | 
 |  | 5 | 2 | 500 | 1 | 50 | 0.21 | 2000 |  | 6 | 500 | 1 | 100 | 0.225 | 4000 |  | 7 | 500 | 1 | 150 | 0.327 | 6000 |  | 8 | 500 | 1 | 200 | 0.37 | 8000 |  | 
 |  | 9 | 3 | 500 | 1.5 | 50 | 0.177 | 3000 |  | 10 | 500 | 1.5 | 100 | 0.217 | 6000 |  | 11 | 500 | 1.5 | 150 | 0.259 | 9000 |  | 12 | 500 | 1.5 | 200 | 0.313 | 12000 |  | 
 |  | 13 | 4 | 500 | 2 | 50 | 0.164 | 4000 |  | 14 | 500 | 2 | 100 | 0.174 | 8000 |  | 15 | 500 | 2 | 150 | 0.22 | 12000 |  | 16 | 500 | 2 | 200 | 0.248 | 16000 |  | 
 |  | 17 | 5 | 1000 | 0.5 | 50 | 0.133 | 1000 |  | 18 | 1000 | 0.5 | 100 | 0.184 | 2000 |  | 19 | 1000 | 0.5 | 150 | 0.197 | 3000 |  | 20 | 1000 | 0.5 | 200 | 0.245 | 4000 |  | 
 |  | 21 | 6 | 1000 | 1 | 50 | 0.14 | 2000 |  | 22 | 1000 | 1 | 100 | 0.189 | 4000 |  | 23 | 1000 | 1 | 150 | 0.207 | 6000 |  | 24 | 1000 | 1 | 200 | 0.228 | 8000 |  | 
 |  | 25 | 7 | 1000 | 1.5 | 50 | 0.154 | 3000 |  | 26 | 1000 | 1.5 | 100 | 0.19 | 6000 |  | 27 | 1000 | 1.5 | 150 | 0.202 | 9000 |  | 28 | 1000 | 1.5 | 200 | 0.258 | 12000 |  | 
 |  | 29 | 8 | 1000 | 2 | 50 | 0.135 | 4000 |  | 30 | 1000 | 2 | 100 | 0.2 | 8000 |  | 31 | 1000 | 2 | 150 | 0.238 | 12000 |  | 32 | 1000 | 2 | 200 | 0.274 | 16000 |  | 
 |  | 33 | 9 | 1500 | 0.5 | 50 | 0.115 | 1000 |  | 34 | 1500 | 0.5 | 100 | 0.185 | 2000 |  | 35 | 1500 | 0.5 | 150 | 0.215 | 3000 |  | 36 | 1500 | 0.5 | 200 | 0.242 | 4000 |  | 
 |  | 37 | 10 | 1500 | 1 | 50 | 0.156 | 2000 |  | 38 | 1500 | 1 | 100 | 0.181 | 4000 |  | 39 | 1500 | 1 | 150 | 0.185 | 6000 |  | 40 | 1500 | 1 | 200 | 0.224 | 8000 |  | 
 |  | 41 | 11 | 1500 | 1.5 | 50 | 0.137 | 3000 |  | 42 | 1500 | 1.5 | 100 | 0.149 | 6000 |  | 43 | 1500 | 1.5 | 150 | 0.217 | 9000 |  | 44 | 1500 | 1.5 | 200 | 0.24 | 12000 |  | 
 |  | 45 | 12 | 1500 | 2 | 50 | 0.12 | 4000 |  | 46 | 1500 | 2 | 100 | 0.149 | 8000 |  | 47 | 1500 | 2 | 150 | 0.191 | 12000 |  | 48 | 1500 | 2 | 200 | 0.235 | 16000 |  | 
 |  | 49 | 13 | 2000 | 0.5 | 50 | 0.136 | 1000 |  | 50 | 2000 | 0.5 | 100 | 0.153 | 2000 |  | 51 | 2000 | 0.5 | 150 | 0.187 | 3000 |  | 52 | 2000 | 0.5 | 200 | 0.228 | 4000 |  | 
 |  | 53 | 14 | 2000 | 1 | 50 | 0.153 | 2000 |  | 54 | 2000 | 1 | 100 | 0.163 | 4000 |  | 55 | 2000 | 1 | 150 | 0.213 | 6000 |  | 56 | 2000 | 1 | 200 | 0.22 | 8000 |  | 
 |  | 57 | 15 | 2000 | 1.5 | 50 | 0.14 | 3000 |  | 58 | 2000 | 1.5 | 100 | 0.155 | 6000 |  | 59 | 2000 | 1.5 | 150 | 0.217 | 9000 |  | 60 | 2000 | 1.5 | 200 | 0.228 | 12000 |  | 
 |  | 61 | 16 | 2000 | 2 | 50 | 0.18 | 4000 |  | 62 | 2000 | 2 | 100 | 0.225 | 8000 |  | 63 | 2000 | 2 | 150 | 0.255 | 12000 |  | 64 | 2000 | 2 | 200 | 0.268 | 16000 |  | 
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