Mechanism and machine, Lecture notes of Mechanical Engineering

A mechanism is a combination of rigid bodies or links connected in such a way that they control and transmit motion, usually changing the type or direction of movement without necessarily performing any useful work, like gears, cams, crank–slider, or levers. A machine is a developed form of a mechanism; it not only transmits motion but also converts energy to perform useful work and accomplish a specific task, such as lifting, cutting, transporting, or shaping materials. In simple terms, a mechanism mainly deals with motion transformation, while a machine produces force and output to do work. Examples of mechanisms include gear trains and linkages, whereas examples of machines include engines, bicycles, lathes, fans, and washing machines. Thus, every machine contains mechanisms, but every mechanism is not a machine.

Typology: Lecture notes

2024/2025

Available from 12/31/2025

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