isometric projection
TRANSCRIPT
Draw hexagonal prism of side 20mm and height 40mm has a square hole of side16mm at the centre. The axis of the of square hole and hexagonal prism coincide One of the faces of the square hole is parallel to a face of the prism Draw isometric projection of the prism with hole to full scale
Univer
sity P
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Engineering Drawing as Per JNTU /Engineering Graphics as per Anna University question in step by step process solved, such explanation is not available In any Text book
Prof.S.Rajendiran
X Y
Draw XY line
Prof.S.Rajendiran
20
X Y
Draw hexagon keeping the side as shown with given dimension
Prof.S.Rajendiran
40
a’
b c
d
ef
a
b’(f’) c’ (e’) d’
e’
(e)
(f) (g)
(h)
(i)(j)
f’ (j’) g’ (i’) (h')X Y
Draw front view and Name the points as shown
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
20
X Y
Draw the square as shown
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
Enclose the top view with square as shown
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
Draw a horizontal line as shown
Prof.S.Rajendiran
300300
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
Draw lines with 300 to horizontal line as shown Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
Transfer the point with dimension as shown Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
Join the points as shown
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
Draw a vertical line to he height of the prism as shown
40
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
Transfer view as shown
2
1 3
4
e f
g
hi
j
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
2
1 3
4
e f
g
hi
j
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
1
a
2
b
c
3
de
4
f
2
1 3
4
e f
g
hi
j
Transfer the square as shown
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
2
1 3
4
e f
g
hi
j
Draw a vertical line as shown
Prof.S.Rajendiran
c
d
e
a (e)
(f) (g)
(h)
(i)(j)f
b
a’ b’(f’) d’
e’` f’ (j’) g’ ( i’) (h')
1
2 3
4X Y
ef
g
h
f
i
j
ab
c
de
f
ISOMETRIC PROJECTION
Prof.S.Rajendiran