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GEARS (2. Bevel Gears (changes direction of rotation, watches, dental…
GEARS
GEARS
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if large gear drives small gear, system's velocity increases
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GEAR SYSTEMS & TYPES
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in machines, combined telescopes - change direction, speed & force for lenses to move
TYPES OF GEARS
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enable gear to control speed, direction & turning force in machine
1. Spur Gears
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most common: washing machines, eggbeaters, engines
2. Bevel Gears
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watches, dental drills & electric typewriters
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4. Worm Gears
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deliver strong turning force, little effort
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tuning heads in guitars, winding mechanisms on watches, corkscrews & toys
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3. Rack & Pinion Gears
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either rack/pinion is fixed, other is free
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car steering mechanism, train wheels, milling machines
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