1450%) A speed reduction unit consisting of spur gears is required to vary the input speed of 1408rpm to an output speed

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1450 A Speed Reduction Unit Consisting Of Spur Gears Is Required To Vary The Input Speed Of 1408rpm To An Output Speed 1 (837.82 KiB) Viewed 13 times

1450%) A speed reduction unit consisting of spur gears is required to vary the input speed of 1408rpm to an output speed of 440pm with a power capacity of 10kW. Both gears are made of steel with teeth surface hardness of 20HB. Strength values are Sy S70MP, Sut-GSOMPa for pinion and Sy-420MP2, Sut=500MPa for gear. Teeth are hobbed with a full depth, 2014 pressure angle hob cutter a) Design the gears based on surface strength with a safety factor of n 25R 69%, accurate mounting of gears and medium shock to moderate shock application and life of 10' cycles, (try to minimize the volume of the reduction unit) b) Calculate the profile and axial contact ratios of the designed gears c) Calculate the likely overall size of the speed reduction unit (gearbox) Destilo