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Orthographic English

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Shor lecture in orthographic projection

Shor lecture in orthographic projection

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Transcript

  • 1. REVIEWS
  • 2. Engineering Drawing Skills
    • Lettering..good writing
    • Line Types..clear between thick and thin lines
    • Orthographic Views
    • Patience
    See the example drawings in the notes.
  • 3. Line Types
    • Visible Line (thick)
    • Hidden Line (thick)
    • Center Line (thin)
    • Dimension Line (thin)
    • Construction Line (thin)
  • 4. Line Types
  • 5. Sketching Techniques
  • 6. Todays lecture is about... ISOMETRIC VIEW ORTHOGRAPHIC VIEW
  • 7. Orthographic Projection
  • 8. THIRD WEEK
    • ORTHOGRAPHIC
      • Introduction to orthographic view.
      • First angle projection view.
      • Third angle projection view.
      • Projection view symbols.
      • Selection of direction views.
      • Dimensioning for orthographic .
  • 9. Describing an Angle Bracket
  • 10. Orthographic Projection
    • Orthographic drawings represent three dimensional objects in three separate views arranged in a standard manner.
  • 11. Orthographic Views
    • You can adequately describe most objects with three orthographic views.
      • Front
      • Top
      • Right
  • 12. Converting to Orthographic
  • 13.  
  • 14. Orthographic Views Hidden lines Centre line
  • 15. The Glass Box Approach
  • 16. Opening the Box
  • 17. Final Views
  • 18. Construction of Views CONSTRUCTION LINES
  • 19. Object for exercise
  • 20. Solution
  • 21. Solution
  • 22. Solution
  • 23. First Angle Projection
    • Introduce in Europe as the earlier method of engineering drawing.
    • The object is as though in the first quarter ( 0 0 ~ 90 0 )
  • 24. First Angle Projection
    • Symbol used in Engineering Drawing
  • 25. First Angle Projection
    • Based on 3 basic views :-
    • Plan view (seen from the top of the object)
    • Front view (seen from the front of the object)
    • Side view (seen from the side of the object)
    • The shadows of the object are cast
    • onto the plane behind the object
  • 26. First Angle Projection
    • The shadows of the object are cast onto the plane behind the object
    SIDE VIEW FRONT VIEW PLAN VIEW
  • 27. Third Angle Projection
    • Introduce in USA, this standard is being widely used till today
    • The object is as though in the first quarter ( 180 0 ~ 270 0 )
  • 28. Third Angle Projection
    • The standard symbol
  • 29.  
  • 30. Orthographic Views
  • 31. Third Angle Projection
    • Based on 3 basic views :-
    • The plan view (as seen from the top of the object)
    • The front view (as seen from the front of the object)
    • The side view (as seen from the side of the object)
    • The shadows of the object are
    • shown onto the plane in front
    • of the object
    PLAN SIDE VIEW FONT VIEW
  • 32. Third Angle Projection
    • The shadows of the object are shown onto the plane in front of the object
    PLAN SIDE VIEW FRONT VIEW
  • 33.  
  • 34. Theory of Dimensioning -Techniques and Conventions
    • Object is made of several parts
    • Position (P)
    • Size (S)
    • Each feature is dimensioned once
    • For each feature, dimension positioned where its shape shows
    • No Redundancy
  • 35.  
  • 36.  
  • 37.  
  • 38.