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CAD - Year 2 GEARS

Learn about the methods to transmit motion and power using gears, belts, and chains. Explore gear types like spur, helical, bevel, worm, and rack, and understand gear terminology and formulas for gear trains.

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CAD - Year 2 GEARS

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  1. CAD - Year 2GEARS

  2. Power Transmission • The following methods may be used to transmit motion / power. • Gears • Belts • Chains

  3. Gears • Gears are standard engineering components used to transmit rotary motion (power) from one component to another. • They tend to be used: • where space is limited • where precise transmission ratios are required • where torque levels are high. • ideal were there is a change in axis direction or rotation..

  4. Types of Gears A number of configurations exist depending on the relative motions required. These include. • Spur gears (between parallel shafts) • Helical gears (gives smoother transmission between parallel shafts)

  5. Types of Gears • Bevel gears (where shafts are at an 90 degrees to other and in line) • Worm and wheel (Shaft at 90 degrees to each other but out of line). • Rack and pinion (converts rotary to linear motion).

  6. Involute Generation

  7. Involute Gear Terminology

  8. Involute Gears in Mesh

  9. LINE OF ACTION

  10. Gear Terms & Formulas

  11. Module Module, m (mm) Gear-tooth size as a function of the module Preferred module values Preferred gear teeth number values

  12. Gear trains are used : • To implement a speed change • To change the direction of rotation • To create a mechanical advantage, increase torque.

  13. Types of Gears

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