Exploded drawings and developments
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Exploded drawings and developments

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Presentation for students in 1st year ESO.

Presentation for students in 1st year ESO.
Subject: Technology.
Unit: Technical Drawing

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Exploded drawings and developments Exploded drawings and developments Presentation Transcript

  • Exploded views and surface developments
  • Making things
    • Before making an object in the workshop it is very important to know what pieces or parts it has:
      • 1st - We will make those pieces one by one
      • 2nd - We will assemble all the parts together, using:
          • Glue, nails, screws, …
  • Exploded views An exploded view of an object is a drawing of every piece in the object
  •  
  • It is very important to indicate all the measurements of every piece, so we can make them later with the real materials.
  • Activity 1 Draw all the pieces of the following wooden box using the measurements in the picture
    • Important things when drawing the pieces:
    • Use the ruler to measure
    • Be careful with the right angles (90º). Use your set squares.
    • Put all the measurements in every piece.
    25 mm 45 mm 37 mm
  • Activity 2 Draw all the pieces of the following object using the measurements in the picture Measurements are always in millimeters, even if the unit is not shown
    • The plywood used to make the piece 1 is 3 mm thick
    • All the bars in the handrail are 5x10 mm
    4 120 55 45
  • Activity 3 a) Draw all the pieces of the following object using the measurements in the picture and the scale you need Use scales when needed If the size is too big, we can use units such as meters and kilometers b) Draw the three main views of the object (front, left side and top), using a 1:50 scale measurements in meters 4 1,5 3 3,2 0,6 2 0,2 Bars are 100x100 mm
  • Activity 4 (Homework)
    • Choose an object in your house and draw its exploded view
    • The object must have at least 4 different pieces.
    • Remember to put the real measurements in every piece
    • Use scales if you need it
    • Some suggestions: table, desk, chair, drawer, cupboard, …
  • SURFACE DEVELOPMENTS
    • If the object is made of only one piece of material that is folded, it is more useful to:
    • Draw the complete surface unfolded
    • Use lines to show where to fold
    Flaps are used to glue the different sides together Very useful with objects made of paper, cardboard, sheets of plastic or metal, …
  • Activity 5 Draw the surface development of the following objects
    • Envelope for a CD
    • (a CD has a 120 mm radius)
    b) Sweets dispenser (maximum size: 170 mm high, 100 mm wide and 50 mm deep) c) Your binder (homework) (use the real measurements with a 1:4 scale)
  • vocabulary (Homework) Write a sentence explaining in your own words the meaning of the following concepts: assemble, exploded view, surface development, wooden, plywood, bar, handrail, fold, unfold, flap, binder