A pair of straight teeth spur gears is to transmit 20 kW when the pinion rotates...

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A pair of straight teeth spur gears is to transmit 20 kW when the pinion rotates at 300 rpm. The velocity ratio is 3. The allowable stresses for the pinion and gear materials are 120 MPa and 100 MPa, respectively. The pinion has 15 teeth and its standard module is 8 mm and b = 14m mm. The teeth has 20 degree full depth involute system and assume the service factor as C, 1. The tooth form can be taken as y = 0.154-0.912/T, and the velocity factor as C,= 3/(3+v). Given Ep= 200 GPa, Eg= 100 GPa, C = 80, and 6, 60 MPa. Determine: 1. Number of teeth on the gear, 2. Pitch circle diameter of the gear, 3. Pitch line velocity, 4. Tangential tooth load, 5. Normal tooth load, 6. Radial tooth load, 7. Lewis form factor for the pinion and the gear, 8. The Lewis equation to the pinion and find Wr. 9. The dynamic load, 10. The endurance fatigue load, 11. The wear load. eede * *** e a ******* ************ A pair of straight teeth spur gears is to transmit 20 kW when the pinion rotates at 300 rpm. The velocity ratio is 3. The allowable stresses for the pinion and gear materials are 120 MPa and 100 MPa, respectively. The pinion has 15 teeth and its standard module is 8 mm and b = 14m mm. The teeth has 20 degree full depth involute system and assume the service factor as C, 1. The tooth form can be taken as y = 0.154-0.912/T, and the velocity factor as C,= 3/(3+v). Given Ep= 200 GPa, Eg= 100 GPa, C = 80, and 6, 60 MPa. Determine: 1. Number of teeth on the gear, 2. Pitch circle diameter of the gear, 3. Pitch line velocity, 4. Tangential tooth load, 5. Normal tooth load, 6. Radial tooth load, 7. Lewis form factor for the pinion and the gear, 8. The Lewis equation to the pinion and find Wr. 9. The dynamic load, 10. The endurance fatigue load, 11. The wear load. eede * *** e a ******* ************