Mechanisms
A mechanism is a device designed to
transform input forces and movement into a desired set of output forces and
movement. Mechanisms generally consist of moving components such as gears and
gear trains, belt and chain drives, cam and follower mechanisms, and linkages
as well as friction devices such as brakes and clutches, and structural components
such as the frame, fasteners, bearings, springs, lubricants and seals, as well
as a variety of specialized machine elements such as splines, pins and keys.
Several types of mechanisms:
For example transmision mechanisms:
Gears:
Gears wheels, or gears, are a wheels with teeth, or cogs. The teeth interlock with those of other gear wheels. When one gear wheel revolves, the other revolves with it in the opposite direction as their mesh teeth together.
Types of gear wheel:
Spur gears: are the simplest gears. The teeth run straight across the wheel.
Helical gears: have curved teeth, so that they mesh together more smoothly.
Bevel gears: allow drive to be transmitted through an angle of 90°.
Crown gears: transmit drive through 90°, often to a small gear called a pinion.
Worm gears: transmit drive through an angle. They also allow a low output speed relative to the input speed of the worm. They can provide a 'one way' drive, as a worm can drive a gear cannot drive a worm because the mechanisms will lock.
1. Spur Gear: are like the fist picture
2. Helical gears:
3. Bevel gears:
4. Crown gears
5. Worm gears:
By. Miguel Valencia Topete
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