Solution no 4 (pressure angle α = 18˚)

Lower bound Lb = [as same as above]

Upper bound Ub = [as same as above]

Initial condition X0 = [as same as above]

1st pinion

2nd pinion

3rd pinion

4th pinion

Constant pinion

Rear pinion

Module m

3.4442

3.3703

3.2278

2.8275

3.6175

2.7137

Number of teeth z

14.000

19.000

19.000

19.000

19.000

19.000

Helix angle β

32.000

30.7565

30.7478

30.7240

30.7716

31.7060

Face width b

34.000

33.000

32.000

32.000

32.000

44.000

Pressure angle αt

20.9637

20.7116

20.7099

20.7052

20.7146

20.9028

Centre distance a

80.000

79.9942

79.9938

79.9922

79.9950

79.9996

Transverse contact ratio εα

1.5077

1.5367

1.5459

1.5709

1.5202

1.5688

Overlap ratio εβ

1.6651

Bending stress σF

927.6637

766.9720

783.5646

635.5152

354.2463

965.5743

Safety factor for bending stress SF

1.0780

1.3038

1.2762

1.5735

2.8229

1.0357

Contact stress σH

1000.240

850.300

792.700

764.600

597.100

1252.90

Safety factor for contact stress σH

1.3967

1.6464

1.7661

1.8310

2.3448

1.1175