Question

Your company needs a spur gearset for speed reduction from input of 3750 to output of 1500 rpm. T…

Your company needs a spur gearset for speed reduction from input of 3750 to output of 1500 rpm. The motion input comes from a single cylinder engine, with the peak torque of 234 lb-in. Your lab already has a 20 teeth, 4-in pitch diameter, 20o pressure angle gear that you wish to use as a pinion. Your lab assistant determined that , and Jg are 0.34 and 0.4, Kv 0.8, Km = 1.6, Ks -KB 1. For contact stress calculation, he found that I-0.1 Both pinion and gear will be through hardened steel. Your lab assistant already corrected the bending and contact strengths; these are 29167 psi and 93543 psi respectively Determine all the parameters for this gearset and the safety factors for bending and contact

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