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MECHANISMS - Coggle Diagram

- - - - Cog wheels are sets of wheels that have teeth called cogs.
      - They mesh together so that one wheel moves another They transmit a rotary motion between the two connected axles, which can be parallel, perpendicular or ublique.
      - Some common types of cylindrical gears are spur gears and helical gears.
      - A bevel gear is an example of a conical gear.
  - - - This is a screw that moves a helical cogwheel which is set perpendicular to the screw.
      - Each time the screw rotates the gear moves forward as many teeth as grooves in the screw (normally a small number, 1, 2 or 3)
      - This is used to reduce velocity as well as serving as a braking system.
  - - - These are two cogwheels with parallel axles that are a certain distance apart.
      - They rotate simultaneously by means of a metal chain or a toothed neoprene belt stretched over both wheels
      - rotating shafts or pulleys.
      - The chain transmits the rotary motion of axle l to axle 2 via gears 1 and 2. The two gears rotate in the same direction.
      - This system transmits greater forces without losing velocity because the chain is attached to the gear teeth so there is no
      - slippage between chain and the wheel.
  - - - The rotary motion of the first wheel 1 drives the second wheel 2
      - Wheel 3 rotates at the same time as wheel 2 and drives wheel 4
      - When there are two wheels, each connected geared wheel rotates in the opposite direction to its partner.
  - - - This is a system of pulleys (or wheels) with a belt
      - There are two or more pulleys.
      - The rotary motion of axle 1 is transmitted to axle 2 via the
      - stretched belt that connects them.
      - Pulleys 2 and 3, attached to the same axle, rotate at the same velocity.
      - The motion of pulley 3 is transmitted to pulley 4 via the belt that
      - connects them all the pulleys rotate in the same direction.
- - - - The load and the effort are on opposite sides of the fulcrum
    - - The load is between the effort and the fulcrum
    - - The effort is between the fulcrum and the load
- - - - This uses a pinion (a small cogwheel) mounted on a rack (a toothed belt or bar)
        When the pinion rotates, the rack advances in a linear motion.
    - - .
        
        This consists of a bolt or threaded bar and a nut that has the same interior diameter as the diameter of the bolt
        
        If the bolt rotates and the nut can't turn, the nut moves in a linear motion along the threaded axle.
        
        If the nut rotates in a fixed position the bolt will move in a linear motion.
    - - This consists of a crank handle attached to the axle of a cylindrical drum (or winch)
        The crank is used to turn the winch.
  - - - This is composed of a crank and a rod called a connecting rodor link.
    - - This is a set of conner, rods attached to a jointed axle. Each of the joints of the axle acts as a crank
    - - This consists of a wheel with an off-centre rotation axle (the axle doesn't coincide with the centre of its circunference)
    - - This is basically a rotating shape that pushes a 'follower' as It moves.