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Gear Research. Matt Cifelli. Spur Gears. Used to increase or decrease the torque of a mechanical object Each straight tooth projects directly from the center of the gear and must fit perfectly into the shaft of the complementary gear in order to work efficiently

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Gear research

Gear Research

Matt Cifelli


Spur gears
Spur Gears

  • Used to increase or decrease the torque of a mechanical object

  • Each straight tooth projects directly from the center of the gear and must fit perfectly into the shaft of the complementary gear in order to work efficiently

  • They create a lot of noise due to the teeth colliding

  • Generally used in blenders, clothes driers and construction equipment and airplane engines



Worm gears
Worm Gears

  • Worm gears have a curved teeth with shallow angles and the worm is a curved and twisted rod that moves the gear

  • Worm shafts can reduce the spinning of the gear greatly

  • The worm shaft is capable of easily moving the gear, but the gear is unable to move the shaft

  • Worm gears are generally used in windup toys, watches and music boxes, as well as cars and machine heads



Crown gears
Crown Gears

  • Crown gears have triangular teeth on one side

  • Each tooth is formed by two edges coming out at a 90 degree angle from the base of the gear, forming isosceles triangles

  • Crown gears are generally used in cars, rotating shaft cam switches and many more mechanical contraptions



Rotary and linear motion
Rotary and Linear Motion

  • Rotary motion is the circular movement of an object around a single, fixed axis

  • Linear motion is the movement of an object from one place to another in a straight line


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