0
X
Fig 2(b)
P.P
Z2
V.P
H.P
Z2
Fig 2(a)
X
Y
YY
Note : Ist angle means, the block is assumed in
front of V.P, above H.P and inside
P.P, as in fig. 2(b) where the F.V. is
...
It may be noted that :-
a) F.V. (X directional view) is on V.P, T.V. (Y
directional view) is on H.P, while R.H.S.V (Z2
dir...
Fig. 2(c)
H.P
T.V.
L
F.V.
V.P
X Y
R.H.S.V.
D
P.
P
H
Step by step procedure
Suggested to prepare
Orthographic views (First angle
method) for The simple
component Shown pictori...
20
60
R40
ISOMETRIC
VIEW X
R40
20
100
80
ø40
80
20
TOP VIEW
FRONT VIEWR.H.S.V
SCALE: 1:1
SYMBOL IS
NOT MARKED
20 20
FIGURE SHOWS ISOMETRIC VIEW OF A
SIMPLE OBJECT(WITHOUT DIMENSIONS)
SHOW ITS THREE ORTHOGRAPHIC VIEWS
Use First Angle
Metho...
F.V
T.V
L.H.S.V.
B
a
b
c
3
2
1
b
3
A
FIGURE SHOWS ISOMETRIC VIEW OF AN
OBJECT(WITHOUT DIMENSIONS) SHOW ITS
THREE ORTHO GRAPHIC VIEWS
Use Third
Angle Method
1. ...
FRONT VIEWL.H.S VIEW
TOP VIEW
A
ab
3
c
2 1
Aim : Figure shows isometric
view, of a simple machine
component.
Draw its following Orthographic
views, & dimension them....
Figure, is the isometric view
X
Figure
L = 75+25=100
H = 10+30=40
D=50
10
10
F.V.
25 75
40
T.V.
ORTHOGRAPHIC
VIEWS
F.V L=100
H=40
T.V L=100
D=50
S.V D=50
H=40
30
10
25 SQ
15 SQ
Ø30,Depth 10
40 SQ
ISOMETRIC
ORTHO. VIEWS
25 Sq
4015
453535
15 Sq
40 Sq
Ø30
5
10
30
10
5
10
R.H.
S.V.
F.V.
T.V.
 Figure shows the isometric
view of a vertical shaft support.
 Draw its all the three
views, using first angle method
of...
ISOMETRIC
VIEW Ø40
Ø64
24
50
1414
48
70
24
10
Ø40
50
Ø64
30
140
L.H.S.VFRONT VIEW
TOP VIEW
Isometric view of a rod support is
given.
Draw its all the three orthographic
views, using first angle method of
projectio...
ISOMETRIC VIEW
16
20
R22
40
X
TOP VIEW
R22
2040
10
FRONT VIEW
RIGHT SIDE
VIEW
14020
80
SCALE: 1:1
3030
66
26
30
10
20R20
R8
30
ISOMETRIC
ORTHO. VIEWS
45
30
8
20 25
16
R8
R20
30 20
10
100
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Orthographic projections

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Transcript of "Orthographic projections"

  1. 1. X Fig 2(b) P.P Z2 V.P H.P Z2 Fig 2(a) X Y YY
  2. 2. Note : Ist angle means, the block is assumed in front of V.P, above H.P and inside P.P, as in fig. 2(b) where the F.V. is projected on V.P, seen in X direction, T.V. is projected on H.P, seen in Y direction & R.H.S.V. is projected on P.P, seen in Z2 direction
  3. 3. It may be noted that :- a) F.V. (X directional view) is on V.P, T.V. (Y directional view) is on H.P, while R.H.S.V (Z2 directional view) is on P.P Fig. 2(c) shows turning of the planes H.P & P.P with their respective hinges, considering plane V.P as fixed plane. b) F.V is within L & H, T.V is within L & D, While R.H.S.V is within H & D. c) The symbol for Ist angle method of projections is placed as shown on fig. 2(c)
  4. 4. Fig. 2(c) H.P T.V. L F.V. V.P X Y R.H.S.V. D P. P H
  5. 5. Step by step procedure Suggested to prepare Orthographic views (First angle method) for The simple component Shown pictorially in figure
  6. 6. 20 60 R40 ISOMETRIC VIEW X
  7. 7. R40 20 100 80 ø40 80 20 TOP VIEW FRONT VIEWR.H.S.V SCALE: 1:1 SYMBOL IS NOT MARKED 20 20
  8. 8. FIGURE SHOWS ISOMETRIC VIEW OF A SIMPLE OBJECT(WITHOUT DIMENSIONS) SHOW ITS THREE ORTHOGRAPHIC VIEWS Use First Angle Method 1. Front View 2. Top View 3. L.H.S.View A B a b 3 c 2 1
  9. 9. F.V T.V L.H.S.V. B a b c 3 2 1 b 3 A
  10. 10. FIGURE SHOWS ISOMETRIC VIEW OF AN OBJECT(WITHOUT DIMENSIONS) SHOW ITS THREE ORTHO GRAPHIC VIEWS Use Third Angle Method 1. Front View 2. Top View 3. L.H.S.View 1. Front View 2. Top View 3. L.H.S.View A a b 3 c 2 1
  11. 11. FRONT VIEWL.H.S VIEW TOP VIEW A ab 3 c 2 1
  12. 12. Aim : Figure shows isometric view, of a simple machine component. Draw its following Orthographic views, & dimension them. 1. Front View 2. Top View 3. R.H.S. View Use First Angle Method of projection
  13. 13. Figure, is the isometric view X Figure L = 75+25=100 H = 10+30=40 D=50
  14. 14. 10 10 F.V. 25 75 40 T.V. ORTHOGRAPHIC VIEWS F.V L=100 H=40 T.V L=100 D=50 S.V D=50 H=40
  15. 15. 30 10 25 SQ 15 SQ Ø30,Depth 10 40 SQ ISOMETRIC ORTHO. VIEWS
  16. 16. 25 Sq 4015 453535 15 Sq 40 Sq Ø30 5 10 30 10 5 10 R.H. S.V. F.V. T.V.
  17. 17.  Figure shows the isometric view of a vertical shaft support.  Draw its all the three views, using first angle method of projections.  Give the necessary dimensions as per aligned system. Exercise :-
  18. 18. ISOMETRIC VIEW Ø40 Ø64 24 50
  19. 19. 1414 48 70 24 10 Ø40 50 Ø64 30 140 L.H.S.VFRONT VIEW TOP VIEW
  20. 20. Isometric view of a rod support is given. Draw its all the three orthographic views, using first angle method of projections. Give all the dimensions. Exercise :-
  21. 21. ISOMETRIC VIEW 16 20 R22 40 X
  22. 22. TOP VIEW R22 2040 10 FRONT VIEW RIGHT SIDE VIEW 14020 80 SCALE: 1:1 3030 66 26 30
  23. 23. 10 20R20 R8 30 ISOMETRIC ORTHO. VIEWS
  24. 24. 45 30 8 20 25 16 R8 R20 30 20 10 100
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