Engineering Drawing
Engineering drawings are often produced strictly according to formalized conventions for layout, nomenclature, interpretation, appearance including typefaces and line styles as well as size and many more one of the standardized tradition is known as GD&T.
Every single area in field engineering will always has its private set of technique for the production of drawings relating to line weight symbols and technical jargons. Many fields of engineering have no GD&T conditions.
The reason behind those drawing is to correct and with confusion capture all the geometric attribute of a product or the final aim of an engineering drawing is to carry needed facts which will give permit the producer to manufacture products.
Engineering drawing was being produced by hand with the application of tools including pencils, ink, straight edges, T- squares, French curves, triangles, rulers, and scales in addition to erasers. Nowadays, they are usually performed electronically using computer aided design (CAD).
Till date, drawings are referring to as blueprints or bluelines even though the terms are anachronistic, taking from a literal interpretation because nearly all the duplicates of engineering drawings were initially drawn with the use of a chemical. The printing techniques that produced graphics on blue-colored paper or of bluelines over a white paper are outclass by better technology reproduction methods that produces black or multicolor line on white paper. There is better generic term “print” is at present the ideal application in the United States. It simply means any paper duplicate of an engineering drawings.
During the production of engineering drawings, coupled with the knowledge of creating them it is always known as technical drawing or drafting, this technical drawing are also demanded for disciplines that cannot be imagined being inclusive part of engineering.
COMMON ATTRIBUTES OF ENGINEERING DRAWINGS
The drawing generally demonstrates the outlined information:
- GEOMETRY: It is the exact structure of the object, symbolized as observed, the link shape of the object when seeing from different sides for example, from, above, below, sides etc
- DIMENSIONS: The object size is placed in standard components.
- TOLERANCE: The permissive alteration for a single dimension
- MATERIAL: It symbolizes composition of the item.
- FINISH: determines the surface suitability of the item, cosmetic or functional.
Various types of lines consist of the following:
- VISIBLE: These are ceaseless lines being used to indicate the sides, very obvious from a certain side.
- HIDDEN: They are short-dashed lines applicable to symbolize edges not easily sighted
- CENTER: They are both long and short and double dashed lines likely to be used to symbolize the axes of circular attributes.
- CUTTING PLANE: these are thin, medium dashed or better still thick long-dashed and double which could be used to define the sections in order to view.
- SECTION: thin lines in pattern form which means the surface in section views as a result of cutting. Cross-hatching is known as the section lines.
- PHANTOM: are long and double short dashed which is used to represent component which is different from the specific assembly.
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