Parts and mechanisms

What is such a detail ?
Detail made, manufactured, or subject to manufacture the product, which is part of the machine, or any technical design, made from a homogeneous in structure and material properties without the use of any assembly operations.

What is the mechanism?
The mechanism of the internal structure of the machine, device, apparatus, leading them into action. The mechanisms are used to transmit motion and energy conversion (gearbox, pump, electric motor).

Details are distinguished by several criteria
To destination
By simplicity of form
By specialization

Types of mechanisms
Flat gears
The mechanism, all points of which describe trajectories lying in parallel to each other planes, is called flat.
Spatial mechanisms
The mechanism that is not flat is called spatial

Types of mechanisms
Cam mechanisms
An example of such a mechanism can serve as a crowd, the pestle of which consists of a vertically positioned and capable of having vertical movement of a bar ending at the bottom with a heavyweight head.
Swivel mechanisms
Mechanisms consisting of rigid links interconnected only by rotational pairs are called articulated

First mechanical invention
Antikythera mechanism-mechanical device, raised in 1901 from an ancient ship. The mechanism dates from around 100 BC. uh. The mechanism contained at least 30 bronze gears in a rectangular wooden case, on the bronze front and rear panels of which were placed dials with arrows

First mechanical invention
The mechanism was used to calculate the motion of celestial bodies and revealed the date of 42 astronomical events. In 2017, using a specially developed computer program, it was found that the device was probably developed or used in an area located within the Island of Rhodes and Syracuse, often offered as places where the anti-mitigation mechanism was created or used.

What parts are often used in life
Screw
Designed for the formation of a threaded connection or fixation
Hook
A part that is commonly used to secure and lift cargo
Machine part
machine parts, each of which is a whole and cannot be disassembled into more simple, integral parts of machines without destruction

Literature
https://ru.wikipedia.org/wiki/Деталь
https://ru.wikipedia.org/wiki/Механизм#Типы_механизмов
https://ru.wikipedia.org/wiki/Антикитерский_механизм
https://ru.wikipedia.org/wiki/Винт_(деталь)
https://ru.wikipedia.org/wiki/Крюк_(деталь)

Thanks for attention!