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CGT 110 S 2013. Gears. Definition. A gear is a rotating machine part having cut teeth , or cogs , which mesh with another toothed part in order to transmit to torque. (Wikipedia)
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CGT 110S 2013 Gears
Definition • A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit to torque. • (Wikipedia) • Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine. • (Wikipedia)
Types of Gears • Spur Gear • Parallel axis • Helical Gear • Parallel axis • Helicoid teeth • Skew Gears • Axis at right angle and do not intersect • Double Helical • Parallel axis • Right & Left helical teeth • Balances axial thrust forces • Bevel • Axis at right angle and intersect • Cone Shaped
Gear Types (cont.) • Spiral Bevels • A bevel gear with angled spiral teeth • Hypoid • Common in differentials • Hypoidcycle teeth • Crown (contrate) • Type of bevel gear • Worm • Axis at right angle and do not intersect • One gear is in the form of a worm • Rack and Pinion • Rack is straight gear • Transmits linear motion • Non-Circular
Involute Gear http://www.excelcalcs.com/repository/machines/gears/involute-coords.xls/