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Gears

Gears. Lab 6. Gear: Definition. A gear is a wheel with teeth along its rim. It is used to transmit effort from one shaft to another. Gear Train. Combination of two or more meshed gears. Used to change the rate of rotation, the direction of rotation, and the amount of torque. Gear Ratio.

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Gears

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  1. Gears Lab 6 Autumn Quarter

  2. Gear: Definition • A gear is a wheel with teeth along its rim. • It is used to transmit effort from one shaft to another. Autumn Quarter

  3. Gear Train • Combination of two or more meshed gears. Used to change the rate of rotation, the direction of rotation, and the amount of torque. Autumn Quarter

  4. Gear Ratio • Gear ratio is also called “Mechanical Advantage” Autumn Quarter

  5. Types of Gears • Spur gears • Worm gear • Rack and pinion • Bevel gears Autumn Quarter

  6. Spur Gears • Simplest • Most widely used in Instrumentation and Control Systems • Used to drive parallel shafts Autumn Quarter

  7. Spur Gear Terminology • Pitch circle diameters • Size of teeth (Diametral pitch) • Center distance • Number of teeth • Pinion • Gear Autumn Quarter

  8. Worm Gears • Used to change speed and direction of rotation. • Used for connecting skew shafts (usually 90 degrees) • High gear ratios. • Higher load capacity. Autumn Quarter

  9. Rack and Pinion • Used to convert rotational motion into linear motion, or vice-versa. Autumn Quarter

  10. Bevel Gears • Used for intersecting shafts. • Most transmissions occur at right angles but shaft angles can be any value. Autumn Quarter

  11. Sprockets • Gears are connected by a chain instead of directly. • The input and output shaft rotations are in the same direction. Autumn Quarter

  12. Today’s Lab: • Window Lift Motor • Lego Robot Gripper • Gears at Table • Build Gearbox • Bicycle Gears Autumn Quarter

  13. Questions ? Autumn Quarter

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