Lower bound Lb = [2 2 2 2 2 2 14 19 19 19 19 19 20 20 20 20 20 30 30 30 30 30 30 40] Upper bound Ub = [7 7 7 7 7 7 14 19 19 19 19 19 32 32 32 32 34 34 34 34 34 34 34 42] Initial condition X0 = [7 7 7 7 7 7 14 19 19 19 19 19 31 31 31 31 31 32 33 33 32 32 32 42] | ||||||
| Sol.1 Pressure angle α = 12˚ | Sol.3 Pressure angle α = 16˚ | Sol.3 Pressure angle α = 16˚ | Sol.3 Pressure angle α = 22˚ | Sol.5 Pressure angle α = 20˚ | Sol.1 Pressure angle α = 12˚ |
1st pinion | 2nd pinion | 3rd pinion | 4th pinion | Constant pinion | Rear pinion | |
Module m | 4.4442 | 3.3707 | 3.2281 | 2.8267 | 3.6172 | 2.7141 |
Number of teeth z | 14.000 | 19.000 | 19.000 | 19.000 | 19.000 | 19.000 |
Helix angle β | 32.000 | 30.7541 | 30.7453 | 30.7284 | 30.7733 | 31.6943 |
Face width b | 34.000 | 33.000 | 32.000 | 32.000 | 32.000 | 44.000 |
Pressure angle αt | 14.0709 | 18.4523 | 18.4507 | 25.1743 | 22.9583 | 14.0261 |
Centre distance a | 80.000 | 80.000 | 80.000 | 79.9735 | 79.9885 | 80.000 |
Transverse contact ratio εα | 1.7836 | 1.6184 | 1.6296 | 1.4321 | 1.4535 | 1.8913 |
Overlap ratio εβ | 1.6651 |
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Bending stress σF | 822.2394 | 738.8489 | 754.3754 | 680.000 | 366.100 | 847.6631 |
Safety factor for bending stress SF | 1.2162 | 1.3535 | 1.3256 | 1.4706 | 2.7314 | 1.1797 |
Contact stress σH | 921.600 | 828.500 | 772.000 | 801.000 | 610.700 | 1141.100 |
Safety factor for contact stress σH | 1.5191 | 1.6897 | 1.8134 | 1.7478 | 2.2926 | 1.2269 |