2 15 Exercise 1 A Gear SpecificationPart number Gear Type of teeth Pitch

2 15 exercise 1 a gear specificationpart number gear

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2. 1.5 Exercise 1: A. Gear Specification/Part number Gear Type # of teeth Pitch Diameter Diametral Pitch Gear Ratio for the pair H2472 Spur 72 3 in 24 1.333 H2496 Spur 96 4 in 24 1.333 L112Y Miter 24 1-1/2 in n/a 1 L112Y Miter 24 1-1/2 in n/a 1 H1616R Helical 16 1 in in n/a 2 H1632L Helical 32 2 in n/a 2 Gear Pair 1 Speed N1 N2 Actual Velocity ratio Theoretical Velocity ratio 4 3.44 4.72 .73 .75 6 1.67 2.19 .76 .75 8 1.29 1.5 .86 .75 Gear Pair 2 Speed N3 N4 Actual Velocity ratio Theoretical Velocity ratio 4 4.72 4.72 1 1 6 2.19 2.19 1 1 8 1.5 1.5 1 1 Gear Pair 3 Speed N5 N6 Actual Velocity ratio Theoretical Velocity ratio 4 4.72 9.24 .51 .50 6 2.19 4.30 .51 .50 8 1.5 3.16 .47 .50 B. 1. SF= 1.25 2. RPM of driver/ RPM of driven= 1750/47= 37.23:1
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3. 47*1.24= 58.28= 30.02:1 4. NT= AT*SF= 2000/1.25= 1600 in/lbs 5. 2000 in/lbs 6. Style B Basic Reducer 72 lbs 7. yes, Style B Basic Reducer with fan 8. Motor HP= AT*Thermal Input H.P./Thermal Output Torque= (1600*2.73)/2415= 1.81 H.P Post Lab Exercise: 1. Worm gear, Helical gear, Cycloidal Disc 2. Application, Hours of operation, bore dimensions, mounting position, output speed, motor horsepower 3. Use mating rollers 4. Quieter, high speed reduction, low vibration, high efficiency 5. A single reduction speed reducer that operates on only a cylindrical worm with screw thread, and a worm or worm wheel. It is so quiet because logistically it has perpendicular non-intersecting shafts. 6. Because even though they have the same ratio, the worm gear reduces typically only has efficiency of 60%
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