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Introduction to Engineering 3-D Sketch from Multi-view

Introduction to Engineering 3-D Sketch from Multi-view. Process for making an isometric sketch given a multi-view drawing. Multi-View to Isometric. General Approach Identify H, W, & D of an object Lightly sketch box with dimensions H, W, D Cut away material you don’t need See Video.

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Introduction to Engineering 3-D Sketch from Multi-view

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  1. Introduction to Engineering3-D Sketch from Multi-view Process for making an isometric sketch given a multi-view drawing

  2. Multi-View to Isometric • General Approach • Identify H, W, & D of an object • Lightly sketch box with dimensions H, W, D • Cut away material you don’t need • See Video

  3. Tips for Making Isometric Sketches • For more complex objects, try • Identifying the types of surfaces on the object • Principal • Inclined • Oblique • Labeling the vertices and using the coordinates of the vertices to draw the isometric

  4. Surface Type A:Principal Surface Miter Line 1 2 • True size in one view • Edge (line) in other 2 views • Plane  Line 4 3 A 4,1 3,2 2,1 3,4

  5. B Surface Type B:Inclined Surface • Characteristic shape in 2 views but not true size in either • Edge (line) in 3rd view 1 2 4 3 4,1 1 4 2 3,2 3

  6. Surface Type C:Oblique Surface • Characteristic shape in all 3 views but true size in none 2 Q: In which views could you get the true length of edges of this oblique surface? 1 to 2 1 to 3 3 to 2 1 3 C 2 1 1 2 3 3

  7. General Procedure • Step 1 - sketch the box for isometric view • Step 2 - identify type of each surface of object • Step 3 - draw surfaces on pictorial • Step 4 - compare views and pictorial • Step 5 - inspect views to see what material is “carved away” from the box. • Step 6 - complete pictorial

  8. Example – The Three View Sketch

  9. Ex -The Isometric Grid

  10. Ex - Box Object

  11. A Ex – Choose a Surface Identify the Principal Surface A A:Principal Surface

  12. B Ex – Map Surface Identify the Inclined Surface B B:Inclined Surface

  13. C Ex – Map Surface C:Principal Surface

  14. D Ex – Map Surface • Corner removed D: Oblique Surface

  15. Ex – Notch Principal Surface

  16. Ex – Notch

  17. Ex – Notch

  18. Ex – Notch Q: What kind of a surface would have its characteristic shape in 2 views? This surface would show up as an edge in the 3rd view Inclined Surface 

  19. Finished Example

  20. Recall the Six Principal Views

  21. A B C Review Slide: Surface Types Inclined SurfaceB Principal SurfaceA Oblique SurfaceC

  22. Summary • Principal, Inclined and Oblique surfaces • How to identify these surfaces

  23. Assignment • Assignment #15 • Bertoline, Problem 2.10 • Pgs. 60 & 61 #’s (1), (6), (8), (19) • Given the multi-view drawing, sketch both the multi-view as well as the corresponding isometric on the sheets provided in the Assignment Packet.

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