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MECHANISMS (rotary motion mechanisms (gears (gear mechanisms with a chain,…

- - - - uses
        
        vehicle engines
        
        industrial machines
        
        washing machines
      - they consist of two pulleys or wheels that are a certain distance apart
    - - uses
        
        drills
        
        machine tools
      - it is a system of pulleys or wheels, with a belt formed by more than two wheels
      - variation in velocity
        
        constant system
        
        multiplying system
        
        reducing system
  - - - these are two cogwheels with parallel axles that are a certain distance apart; they rotate simultaneously by means of a metal chain
      - uses
        
        motors and engines
        
        industrial machinery
        
        bycicles and motorbikes
    - - this is a system of more than two gears, connected together
      - uses
        
        some electrical appliances
        
        vehicle gearboxes
        
        robotics
    - - cogwheels are sets of wheels that have teeth caled cogs
      - uses
        
        vehicles
        
        food processors
        
        domestic appliances
  - - - primary drive wheel
      - output wheel
    - - often in industry to make
        
        metal sheets
        
        rolls of paper
        
        other fine materials
  - - - gear reduction systems
      - musical tuning keys
      - lap counters
- - - - by traction
      - by torsion
      - by compression
- - - - which can be
        
        an electrical motor
        
        our own muscles
        
        a spring
  - - - rotary to linear
      - rotary to reciprocating
    - - linear
      - rotary
- - - - they are rigid bars that are supported by a fulcrum
      - F x d = R x r
      - types of levers
        
        class 2
        
        class 3
        
        class 1
    - - fixed
        
        F=R
        
        It is a wheel that has a groove around itinto which a rope, chain or belt fits
        
        uses
        
        wells
        
        gym equipment
      - moveable
        
        F=R/2
        
        It is a set of two pulleys-one is fixed while the other can move in a linear direction
      - compound
        
        It is a system of fixed and moveable pulleys, often called block and tackle
        
        uses
        
        crancs
        
        lifts
- - - - rack and pinion system
      - nut and bolt system
      - winch and crak handle
    - - crank-link-slider
      - crankshaft
      - cam
      - eccentric cam