It is required to design a pair of spur gears with 20° full-depth involute teeth. The input [ shaft rotates at 720 rpm and received 5 kW power through a flexible coupling. The speed of output shaft should be 144 rpm. The pinion as well as the gear are made up of Fe410. The service factor for the application is 1.25 the gears are machined to meet the specifications of Grade 6. Assume number of teeth for the pinion as 18. (i) For preliminary calculations, assume pitch line velocity as 5 m/s and the factor of safety as 2. Estimate the module and select the first preference value of the module. (ii) Using the value of module, calculate the pitch circle diameter of the pinion and gear (iii) Determine the static load and dynamic load by Buckingham's equation. Also and the face width. calculate the beam strength and the correct value of factor of safety based on beam strength.

It is required to design a pair of spur gears with 20° full-depth involute teeth. The input [ shaft rotates at 720 rpm and received 5 kW power through a flexible coupling. The speed of output shaft should be 144 rpm. The pinion as well as the gear are made up of Fe410. The service factor for the application is 1.25 the gears are machined to meet the specifications of Grade 6. Assume number of teeth for the pinion as 18. (i) For preliminary calculations, assume pitch line velocity as 5 m/s and the factor of safety as 2. Estimate the module and select the first preference value of the module. (ii) Using the value of module, calculate the pitch circle diameter of the pinion and gear (iii) Determine the static load and dynamic load by Buckingham's equation. Also and the face width. calculate the beam strength and the correct value of factor of safety based on beam strength.