MECHANISMS

For example, the parts of a bicycle are mechanisms.

A mechanisms transmit and transform force and motion. Require an input force and motion.

Mechanisms transmit motion and force to receptors that finally perform the work, this is the output force and motion.

- The parts of a mechanism.

In the case of a bicycle, your legs provide the force and motion, the pedals transmits the input motion and transmit to the back wheel (the output receptor).

Mechanisms transmit and transform force and motion from an input source to an output receptor.

- Classification of mechanisms.
Classification by the work that they do.
· Transmission of motion.
Linear transmission: lever, pulley, block and tackle.
Rotary transmission: friction wheels, belt drive, gears, chain drive.

· Transformation of motion.
Rotary-linear: wheel, rack and pinion, nut and bolt, crank.
Reciprocating rotary-linear: crank and rod, crankshaft, cam, eccentric cam.

· Motion control.
Direction control: ratchet, freewheel.
Speed reduction: brake.

· Energy accumulation.
Absorption / Dissipation: spring.

· Connection.

Linkage: clutch.
Support: plain bearing.