Mechanisms and Mechanical Systems

Mechanisms

Mechanisms are systems of moving parts that perform a task. They are crucial foundations for more complex mechanical systems.
Cams, levers and linkages are common types of mechanisms.
A cam is a rotating or sliding piece in a mechanical linkage, which imparts an oscillating or reciprocating motion to another linked part. The shape and size of the cam influence the movement it can create.
Levers operate around a pivot point or fulcrum. They are classified into three types according to the relative positions of the effort, load, and fulcrum: Class 1, Class 2, and Class 3.
Linkages connect two or more levers together and can change the type, direction and amount of movement.

Mechanical Systems

Mechanical systems are assemblies of moving parts that work together to perform a specific function.
Drive systems are mechanisms that transmit power from a drive source to a driven load. Common drive systems include gear drives, belt drives, and chain drives.
A belt drive system uses a belt to transfer power from one pulley to another. The belt can be flat or V-shaped, and the pulleys need not be the same size.
Chain drives are similar to belt drives, but instead use a loop of chain that meshes with sprockets. They can handle heavier loads and are used in machines like bicycles and motorcycles.
The clutch mechanism is used in vehicles to engage or disengage the power from the engine to the wheel.
A crank and slider mechanism converts circular motion into reciprocating motion, or vice-versa.

Remember, while theoretical understanding is beneficial, mastering practical skills through drawing and building these mechanical systems will enhance your comprehension. Look for real-world examples of these mechanisms and systems to help reinforce your understanding.