Basic Engineering Drawing Types 1. Freehand Sketch (2 D or 3 D) Anything goes Can be 2 D or 3 D Can be rough and quick or neat, detailed and shaded No tools are used (rulers, protractors, stencils, etc. ) 2. Pictorial Drawings (3 D) 1. Isometric drawings 2. Oblique drawings 3. Perspective drawings 3. Orthographic Drawing (2 D) Orthographic Projection Drawing (Multi-view Drawings)
Freehand Sketch
Sketching • • Pros - Most used, easy, quick, can be used anytime and anywhere Cons – no set format
Purpose of Engineering Drawings (instead of sketching) 1. Universally accepted – – – From department to department within a company From one company to the next And even from country to country 2. Efficient – – Drawing gives more information at faster rate then trying to explain it Save time and money 3. Multi-functional – – Can be used simultaneously in all departments Design, drafting, prototyping, production, and advertising
Section Drawing Cutting Plane View remaining part from this Ortho view of sectioned part direction Solid Material Removed Part
Assembly Drawing
Exploded Drawing Balloons Parts List
Animation Video
References: Madsen, D. , Folkestad, J. , Schertz, K. , Shumaker, T. , Stark, C. , & Turpin, J. (2004). Engineering Drawing and Design (3 rd ed. ), Albany, NY: Thompson Learning, Inc. / Delmar.
Credits: Writer: Gary Platt Content Editor: Sam Cox & Wes Terrell Production Work: CJ Amarosa