Research Article
Reliability Evaluation of NC Machine Tools considering Working Conditions
Table 2
Failure data of NC machine tools under different working conditions covariates.
| | Workpiece name | Cutting force/KN | Number of tool changes/(N/h) | Cutting fluid | Temperature/°C | TBF/h | Data type |
| | Flywheel | 0.35 | 2 | 1 | 20 | 437 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 1896 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 340 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 244 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 249 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 898 | 1 | | Flywheel | 0.35 | 2 | 1 | 20 | 1148 | 0 | | Cylinder block | 0.43 | 17 | 0 | 21 | 158 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 67 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 242 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 107 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 155 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 1717 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 812 | 1 | | Cylinder block | 0.43 | 17 | 0 | 21 | 724 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 316 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 99 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 1419 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 1430 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 225 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 773 | 1 | | Cylinder head | 0.54 | 4 | 0 | 22 | 843 | 0 | | Mould | 0.78 | 10 | 1 | 19 | 398 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 29 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 401 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 1148 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 1012 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 733 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 1717 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 773 | 1 | | Mould | 0.78 | 10 | 1 | 19 | 445 | 0 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 348 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 167 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 1232 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 1118 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 633 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 382 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 321 | 1 | | Flywheel housing | 0.81 | 4 | 1 | 20 | 576 | 0 | | Cylinder | 0.84 | 6 | 0 | 19 | 58 | 1 | | Cylinder | 0.84 | 6 | 0 | 19 | 37 | 1 | | Cylinder | 0.84 | 6 | 0 | 19 | 58 | 1 | | Cylinder | 0.84 | 6 | 0 | 19 | 592 | 1 | | Cylinder | 0.84 | 6 | 0 | 19 | 1008 | 1 | | Cylinder | 0.84 | 6 | 0 | 19 | 365 | 1 | | Cylinder | 0.84 | 6 | 0 | 20 | 1144 | 1 | | Cylinder | 0.84 | 6 | 0 | 20 | 1430 | 1 | | Cylinder | 0.84 | 6 | 0 | 20 | 373 | 1 | | Cylinder | 0.84 | 6 | 0 | 20 | 659 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 234 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 175 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 190 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 151 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 18 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 530 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 349 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 526 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 368 | 1 | | Connecting plate | 1.03 | 14 | 1 | 22 | 174 | 1 |
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