Research Article
Pervasive Investigations of Critical Speed over Weight and Deflection Factors of Shaft Assembly in CNC Ball Screw System
Table 2
Critical speed summarization.
| | Shaft load points (mm) | 50 | 100 | 170 | 240 | 310 | 380 | 440 | 500 |
| | Weight (kgf) | 0.6 | 6.1 | 4.2 | 4.25 | 4.2 | 4.25 | 13.2 | 3.0 | | Deflection (×12 × 10−5 mm) | 1.5 | 3.1 | 6 | 6.1 | 6.15 | 6 | 4 | 1.2 | | Critical speed (rpm) | 38467 using (2) |
| | Weight (kgf) | 0.7 | 7.2 | 4.6 | 4.65 | 4.6 | 4.65 | 15.4 | 3.21 | | Deflection (×12 × 10−5 mm) | 1.6 | 3.2 | 6.1 | 6.2 | 6.25 | 6.1 | 4.1 | 1.3 | | Critical speed (rpm) | 38316 using (2) |
| | Weight (kgf) | 0.8 | 8.3 | 4.9 | 4.95 | 4.9 | 4.95 | 17.3 | 3.41 | | Deflection (×12 × 10−5 mm) | 1.7 | 3.3 | 6.2 | 6.3 | 6.35 | 6.2 | 4.2 | 1.4 | | Critical speed (rpm) | 38082 using (2) |
| | Weight (kgf) | 0.9 | 9.4 | 5.2 | 5.25 | 5.2 | 5.25 | 19.4 | 3.61 | | Deflection (×12 × 10−5 mm) | 1.8 | 3.4 | 6.3 | 6.4 | 6.45 | 6.3 | 4.3 | 1.5 | | Critical speed (rpm) | 37870 using (2) |
| | Weight (kgf) | 1.0 | 10.5 | 5.7 | 5.75 | 5.7 | 5.75 | 21.59 | 3.71 | | Deflection (×12 × 10−5 mm) | 1.9 | 3.5 | 6.4 | 6.5 | 6.55 | 6.4 | 4.4 | 1.6 | | Critical speed (rpm) | 37563 using (2) |
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