Lab 8 report.docx - Jane Doe MMET 301-912 TA Divyank Garg Lab 8 Gear Trains and Speed Reducers Exercise 1 Part A Gear Specification S2472 S2496 L112Y

Lab 8 report.docx - Jane Doe MMET 301-912 TA Divyank Garg...

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Jane Doe MMET 301-912 TA: Divyank Garg Lab 8: Gear Trains and Speed Reducers Exercise 1: Part A Gear Specification Gear Type Number of teeth Pitch diameter Diametrical pitch Gear ratio for the pair S2472 Spur 72 3.0 in 24 3:2 S2496 Spur 96 4.0 in 24 L112Y Bevel 24 1.5 in 16 1:1 L112Y Bevel 24 1.5 in 16 H1616R Helical 16 1.0 in 16 2:1 H1632L helical 32 2.0 in 16 Speed Gear Pair 1 Actual velocity ratio Theoretical velocity ratio N1 N2 4 8 6.5 1.23 1.33 6 18 13 1.38 1.33 8 26 20 1.30 1.33 Speed Gear Pair 2 Actual velocity ratio Theoretical velocity ratio N1 N2 4 8 6.5 1.23 1 6 16 13 1.23 1 8 23 18 1.28 1 Speed Gear Pair 3 Actual velocity ratio Theoretical velocity ratio N1 N2 4 10 3.5 2.8 2 6 14 7 2.0 2 8 20 10 2.0 2 Overall Speed Ratio: 2.66
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Part B 1. S.F. = 1.25 2. Drive ratio = (1750/47) = 39.23 3. Ratio = (1750) / (47) * (1.25) = 30.03 4. Actual torque = (2000*47) / (47*1.25) = 1,612 in-lb. 5. Normal torque = (1.25) * (1612) = 2,016 in-lb. 6. Smallest reducer = 3.25 CD
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  • Spring '15
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