Quality index
1. A 5-start wormset has l = 20°, C = 2.75 in, Ng= 33, and the angle between the shafts is 90°. Find the pitch diameters of the worm and worm gear, the lead, and the axial pitch.
2. Size the bevel gears in Problem 13-40 for a bending factor of safety of at least 2.5 assuming a 5-year, 2-shift life, steady torque, quality index of 8, and an AISI 4140 steel pinion and gear.
3. Size the bevel gears in Problem 13-40 for a minimum safety factor of 1.8 for any mode of failure of pinion or gear assuming a 5-year, 2-shift life, steady torque, quality index of 8, and an AISI 4140 steel pinion and gear.
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper Now4. Size the spiral gears in Problem 13-41 for a bending factor of safety of at least 2.0 assuming a 7-year, 3-shift life, steady torque, quality index of 8, and an AISI 4340 steel pinion and gear.
