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Graphic Communication
Concept sheet | Science and Technology
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Secondary
1-4
In technical drawing, graphic communication is the set of visual elements used to represent a technical object, its operation and manufacturing.
These visual elements can be lines, curves, arrows, other symbols, colours and so on.
Depending on what you want to represent (operation of a technical object, manufacturing of a technical object, etc.), graphic communication can be used to produce different types of engineering drawings and diagrams.
Types of Diagrams
Types of Engineering Drawings
Depending on the diagram or manufacturing drawing chosen to produce a technical drawing, different forms of representation can be used.
To represent the operation of a pair of scissors, a design plan is created.
A pair of scissors
Source : Kozak Sergii, Shutterstock.com
The design plan of a pair of scissors
Here are some graphic communication elements in the diagram:
- two hollow arrows representing the force to be applied to close the pair of scissors;
- two double curved black arrows representing the bidirectional rotational motion of the scissor blades;
- two black lines representing the slides and handles;
- a small black disk representing the rivet on the pair of scissors.
Graphic communication follows specific rules. In order to properly represent the manufacturing process of a technical object, its dimensions must respect a precise scale and comply with dimensioning rules.
In addition, specific measuring instruments and techniques are required.