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Types of Engineering Drawings

Assembly Drawings
Assembly Drawings

An assembly drawing is needed for all products or inventions that have more than one part. These drawings list all parts and sub-assemblies that make the final product. A BOM (Bill of Materials) on the drawing lists each part number, part name, and part quantity.

Cross-Sectional Views
Cross-Sectional Views

This cross-sectional view (section A-A, figure 17), one that is orthogonal to the viewing direction, shows the relationships of lengths and diameters better. These drawings are easier to make than isometric drawings.

source: me.umn.edu
image: ocw.mit.edu
Dimensioning
Dimensioning

The dimension line is a thin line, broken in the middle to allow the placement of the dimension value, with arrowheads at each end (see diagram below). An arrowhead is approximately 3 mm long and 1mm wide. That is, the length is roughly three times the width. An extension line extends a line on the object to the dimension line.

Drawing Tools
Drawing Tools

2D and 3D drawing tools. Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

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Isometric Drawing
Isometric Drawing

For a technical or engineering drawing, however, different strategies have to be used. This is where an isometric drawing becomes useful. An isometric drawing allows the designer to draw an object in three dimensions. Isometric drawings are also called isometric projections.

source: study.com
Orthographic or Multiview Drawings
Orthographic or Multiview Drawings

Isometric projection is a method for visually representing three-dimensional objects in two dimensions in technical and engineering drawings. It is an axonometric projection in which the three coordinate axes appear equally foreshortened and the angles between any two of them are 120 degrees.

source: quora.com
image: youtube.com
Sectioning
Sectioning

Engineering Drawings: Sectioning A short series of lectures on Engineering Drawing as Part of ENGG1960 By Paul ... the side behind the sectioning viewing plane.

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