2 Driven Driver 3010 3 1530 5 Multiple the two gear ratios in the system to get

2 driven driver 3010 3 1530 5 multiple the two gear

This preview shows page 2 - 4 out of 4 pages.

2. Driven/ Driver 30/10 = 3 15/30 = .5 Multiple the two gear ratios in the system to get the overall gear ratio. 3 * .5 = 1.5 Exercise I: A. Part Number Gear Type Number of Teeth Pitch diameter Diametral Pitch Gear Ratio H2472 Spur 72 3 24 3:4 H2496 Spur 96 4 24 L112Y Miter 24 1.5 16 1:1 L112Y Miter 24 1.5 16 H1616R Helical 16 1 16 1:2 H1632L Helical 32 2 16 Speed Gear Pair 1 Actual Velocity Ratio Theoretical velocity ratio N1 N2 5 6.0 3.75 1.60 1.33 7 7.5 5.5 1.36 1.33 9 9.75 7.6 1.28 1.33
Image of page 2
Speed Gear Pair 2 Actual Velocity Ratio Theoretical velocity ratio N1 N2 5 4.00 4.00 1.00 1.00 7 5.50 5.50 1.00 1.00 9 7.25 7.25 1.00 1.00 Speed Gear Pair 3 Actual Velocity Ratio Theoretical velocity ratio N1 N2 5 4.00 2.00 2.00 2.00 7 5.50 3.00 1.83 2.00 9 7.25 3.80 1.91 2.00 B. 1. What is the service factor for the given application? 1.25 2. What is the overall drive ratio? RPM Driver/ RPM driven 1750/47= 37.23:1 3. If a belt drive is used for secondary reduction, what should be the ratio of the worm gear reducer? Belt drive ratio is 1.24. Overall Drive Ratio/ Belt drive ratio 37.23/1.24 = 30.02 4. What is the actual torque at the reducer output shaft? Torque at head shaft/ Belt drive ratio 2000/1.24= 1612.9 5. What is the normal torque? Actual Torque * Service Factor 1612.9 * 1.25 = 2016.13 6. What is the selected size of the reducer based on the mechanical rating?
Image of page 3
Image of page 4

You've reached the end of your free preview.

Want to read all 4 pages?

  • Fall '18
  • gear, Gear Trains, speed reducers

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture