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CHARACTERISTIC
TYPES
EXCERCISES
CONSTRUCTION
CONCEPT OBLIQUE DRAWING
ORIENTATION
CONCEPT
Oblique Axis
CONCEPT
Oblique Axis
Horizontal Axis
CONCEPT
Oblique Axis
Vertical Axis
Horizontal Axis
CONCEPT
Oblique Axis
Horizontal Axis
Vertical Axis
Receding Axis(any convenient angle 30°, 45° & 60°)
Receding Axis
300
600
450
Charateristics of Oblique
Oblique LineOblique Line
Non Oblique
Line
Non Oblique
Line
Angle in Oblique
Angle in Oblique
Circle in Oblique
Circle in Oblique
Arc in ObliqueArc in
Oblique
A
CB
E
D
G
F
H
I
+
45o
The oblique lines are lines that are parallel to any oblique axis.
+
45o
B
A
C
D
E
H
I G
F
Any object lines that is not parallel to any oblique axis.
A
CB
E
D
G
F
H
I
+
60o
60o
An angle on an object surface that is parallel to the front projection plane or receding plane
+
45o
B
A
C
DE
H
I G
F
A circle that is parallel to the front projection plane is a circle of actual size while on a receding plane would appear is an ellipse.
A
B C
D
E
H
I
An arc which is parallel to the projection plane shows its true size.
TYPES OF OBLIQUE DRAWING
CAVALIER OBLIQUE
( D )
CABINET OBLIQUE ( 1/2
D )
COMMON OBLIQUE
( 3/4 D )
10050 75
ORIENTATION OF OBLIQUE DRAWING
1. Circle Orientation 2. Arc Orientation
3. Curve Orientation
Circle Orientation
Arc Orientation
Curve Orientation
CONSTRUCTION OF OBLIQUE DRAWING BY BOX METHOD
450
Top View
Front View
Example 1
45˚
STEP 1Make a box with 45⁰
Draw a line construction according the measurement
45˚
Find centre point and draw using compass to
create circle
FinallyDarken the object line
Example 2
45˚
STEP 1Make a box with 45⁰
Draw a line construction according the measurementFind centre point and
draw using compass to create circle
45˚
FinallyDarken the object line
Construct box at the back
Example 3
Step 1Construct a box
with 45 ⁰45˚
Draw a line construction according the measurement
Bisect each line and mark the point A, B, C
and D
A
B
C
D
Construct perpendicular lines on each points A, B, C and D which will create four centre
with blue point
45˚
Construct curve framemove the quartercircle
bisecting line
Finally Darken object line
Construct oblique circle by connecting the arc points
using the French or fl exible curve.
Redraw this object in cavalier in cabinet oblique drawings.
EXERCISEEXERCISE
Figure shows that the top and font views of objects. Draw this objects in cavalier oblique drawing. Use 10 mm x 10 mm grid.
EXERCISE
