Zhengjian XU 29th OCT 2008
Introduction to cogwheel trains Gear Types
Spur lurch: gear with radial teeth latitude to its axis
pinion
Rack toothed wheel (pinion) engages a notched saloon (rack) to convert rotary motion into linear motion
Rack & pennon a
Bevel Gear
Either of a pair of toothed wheels whose working
surfaces argon inclined to nonparallel axes.
Introduction to gear trains Gear Types
helical gear: a gear that has the teeth cut at an angle to the sum line of the
gear. This kind of gear is effective because thither is no chance of intermittent tooth-totooth operation because there are at least twain teeth meshed at any time. It can operate quieter than spur gear.
louse gear: A worm is used to reduce speed. For
apiece complete turn of the worm snap the gear shaft advances only one tooth of the gear. Unlike ordinary gears, the motion is not reversible, a worm can repel a gear to reduce speed but a gear cannot acquire a worm to increase it.
Harmonic gear: The likeable gear allows high
reduction ratios with concentric shafts and with very low reverberation and vibration.
It is based on a very simple verbal expression utilising metals elasto-mechanical property
Introduction to gear trains Gear Types
Herringbone gear:
The two helix angle come together in the center of the gear face to form a V.
Differential gear: A vehicles wheels rotate at different speeds,
especially when turn corners. The differential is designed to drive a pair of wheels with sufficient force, while allowing them to rotate at different speeds
Input torsion is applied to the ring gear (blue), which turns the entire carrier (blue), providing torque to both side gears (red and yellow), which in turn may drive the left and right wheels. If the resistance at both wheels is equal, the major planet gear (green) does not rotate, and both wheels turn at the selfsame(prenominal) rate.
If the left side gear (red) encounters resistance, the planet gear (green) rotates...If you compulsion to get a full essay, order it on our website: Ordercustompaper.com
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