Orthographic Projection Review  Isometric Drawings   to appear three dimensional, a 30 degree angle is applied to its sides Dimensions still stay the same.

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Transcript Orthographic Projection Review  Isometric Drawings   to appear three dimensional, a 30 degree angle is applied to its sides Dimensions still stay the same.

Slide 1

Orthographic Projection


Slide 2

Review


Isometric Drawings




to appear three dimensional, a 30
degree angle is applied to its sides
Dimensions still stay the same


Slide 3

Review contingued


Oblique Drawings (for a cube)




Draw the front (is parallel to you) or
side view of the object.
All measurements drawn backwards
are half the original measurement.

45 degrees is the
angle for all lines
drawn backwards



Slide 4

Orthographic Projections


Ortho – Greek word meaning
perpendicular




Show the views of an object projected
in 2-D
Usual views are the top, front and right
side of the object


Slide 5

Imagine the following




If object were
surrounded by a
glass cube
We could see on
each of the cube’s
faces a projection
of the object
within view


Slide 6

Orthographic projections




Unfold the cube so
all the views lye in
one plane
The three views
are now on a
single sheet


Slide 7

The three views


Front view




Top view




Height and width
Width and depth

Right view


Depth and height


Slide 8

Make sure your views are aligned
(and to scale)


Slide 9

Make sure to include details


Slide 10


Slide 11


Slide 12


Slide 13

Do your orthographic drawings with a
Title Block Border






Instructions:
All drawings must be on a clean blank,
not 3-hole punched sheet of 215mm x
279mm paper (8-1/2” x 11”). The
template must have a border and a title
block. When you draw a part you must
also include the title, scale, date and
your full name in block letters within the
title block. Refer to included diagram.
To Create The Border:
1.
Draw a rectangle 10mm inside all four
sides of the sheet.


Slide 14

Instructions continued









To Create The Title Block:
1.
Draw a horizontal line between the left and right
borders 7mm above the bottom border.
2.
Draw a horizontal line between the left and right
borders 3mm above the first line.
3.
Draw a horizontal line between the left and right
borders 5mm above the second line.
4.
Draw a vertical line between the bottom border
and the third line 75mm from the left border.
5.
Draw a vertical line between the bottom border
and the third line 125mm from the left border
6.
Draw a vertical line between the bottom border
and the third line 100mm from the right border.
7.
Write the title, scale, date and your full name
5mm from the left vertical lines within the title block.


Slide 15

Example
10m m
BORDER

PAPER

10m m

10m m

5m m

5m m
T IT L E

SC ALE

5m m
DATE

5m m

5m m

FU LL N AM E

3m m
7m m
T IT L E B L O C K

75m m
125m m

10m m
100m m


Slide 16

Should be similar to


Slide 17

Draw an orthographic drawing for the
following using the following dimension
1.5 cm

1.5 cm

1.5 cm

4.5 cm

6 cm

4.5 cm


Slide 18

Drawing #2
This one has a scale in mm