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Breakdown of the Language of Technical Drawings

Breakdown of the Language of Technical Drawings. What’s the difference between an engineering drawing and a diagram ? . DIAGRAMS. Design Plan for a C-Clamp . Technical Diagram for a C-Clamp . Fixed Jaw. Fixed Jaw. Frame. Moveable Jaw. Frame. Moveable Jaw. Handle. Handle.

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Breakdown of the Language of Technical Drawings

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  1. Breakdown of the Language of Technical Drawings

  2. What’s the difference between an engineering drawing and a diagram?

  3. DIAGRAMS Design Plan for a C-Clamp Technical Diagram for a C-Clamp Fixed Jaw Fixed Jaw Frame Moveable Jaw Frame Moveable Jaw Handle Handle Adjusting Screw Adjusting Screw F Materials Legend Steel Bottom View 3 Original material created by Emmanuel Fournier

  4. Engineering Drawing

  5. Types of Engineering Drawings • General • Exploded view • Detail drawing

  6. 1. General Drawing A drawing that shows the overall appearance of an object

  7. 2. Exploded View Drawing A drawing that illustrates the different parts of an object, separately. May include a bill (list) of materials

  8. 3. Detail Drawing A drawing that contains all the necessary elements to construct an object

  9. How do we represent 3D technical objects in 2D? Projections “A projection is a representation of a 3 dimensional object in 2 dimensions.”

  10. 3 Types of Projections • Multiview Perspective Drawings : show all 3 dimensions of an object • Isometric • Oblique

  11. 1. Multiview Projections A 2D representation of the different views of an object

  12. 1. Multiview Projections The front view is always the view that best represents the object, it usually has the most detail

  13. 2. Isometric Projections A perspective drawing of an object where the principal edges are arranged on 3 isometric (equal measure) axes.

  14. 2. Isometric Projections • Object has one or more edges facing forward • Measurements of all edges are to scale but angles are not

  15. 2. Isometric Projections

  16. 2. Isometric Projections Isometric projections are often combined with multiview projections

  17. 3. Oblique Projections • Object has one side parallel to the paper • Measurements of height and length are precise but depth is not

  18. 3. Oblique Projections

  19. Summary

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