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Q-2 A speed-reducer has 20 full-depth teeth, and the single-reduction spur-gear gearset has the pinion and gear tooth nu
Posted: Thu Jun 02, 2022 10:03 am
by answerhappygod
- Q 2 A Speed Reducer Has 20 Full Depth Teeth And The Single Reduction Spur Gear Gearset Has The Pinion And Gear Tooth Nu 1 (34.9 KiB) Viewed 22 times
Q-2 A speed-reducer has 20 full-depth teeth, and the single-reduction spur-gear gearset has the pinion and gear tooth numbers as: Np = 22 and No = 60 teeth. The module, m is 6 mm and the face width, F is 75 mm. The pinion shaft speed no = 1145 rev/min. The life goal of 5-year 24-hour-per-day service is about 3(109) pinion revolutions. The absolute value of the pitch variation is such that the quality number is 7. The materials are AISI4340 through- hardened grade 1 steels, heat-treated to 250 Brinell, core and case, for both gears. The load is moderate shock and the power is smooth. For an overall reliability of RN = 0.99, and for a safety factor of 2.5, determine the safe power handling capacity of the speed reducer. Use AGMA formulas. [40 pts.]