:champagne::beer_mugs:MECHANISMS :beer_mugs::champagne: (worm gear…
F· d= R · r
N1·D1 = N2·D2 -> D1/D2=N2/N1
Gear mechanisms and cogwheels
N, and N, are the velocities of the corresponding wheels
Z , and Z, are the numbers of teeth.
Gear mechanisms with a chain
N1· Z1 = N2· Z2->Z1/Z2=N2/N1
Pulley trains with belts
Iv i and N, are the respective velocities of the drive and driven
De Dn Di and D, are the diameters of each wheel.
Uses: machine tools and dnlls
Rack and pinion system
P is the distance between two consecutive teeth in millimetres.
• Z is the number of teeth in the pinion.
• N is the number of rotations per minute of the pinion
Winch and crank handle
• F is the force applied and R, the resistance.
• r is the radius of the winch and d, the length of the crank handle.