Unit-III Projection of Solids part 2 with animation

Unit-III Projection of Solids part 2 with animation

1. Thursday, January 7, 2021 1 Presented by Dr. N. Nagaprasad Asst . Professor / Dept. of Mechanical Engg ., Engineering Graphics Unit-III Projection of Solids

2. UNIT I PROJECTION OF SOLIDS Projection of simple solids like prisms, pyramids, cylinder and cone with axis is parallel, perpendicular and inclined to one of the plane. TEXT BOOKS: 1. Natarajan K.V., “A Text book of Engineering Graphics”, Dhanalakshmi Publishers, (2006). 2. Bhatt N.D., “Engineering Drawing”, 46th Edition, Charotar Publishing House, (2003). REFERENCE BOOKS: 1. Venugopal K., and Prabhu Raja V., “Engineering Graphics”, New Age International (P) Limited, (2008). 2. Gopalakrishnan K.R., “Engineering Drawing” (Vol .I&II), Subhas Publications. (1998). 3. DhananjayA.Jolhe , “Engineering Drawing with an introduction to Auto CAD”, Tata McGraw Hill Publishing Company Limited, (2008). 2 Thursday, January 7, 2021

3. 1.Problem on Square prism Thursday, January 7, 2021 3 A Square prism of base side 30 mm and height 70 mm is resting on one its base edges on HP . It is axis is inclined at 40° to H.P and parallel to VP . Draw its projections . Given: Square prism Base side= 30 mm Height= 70 Resting one its base edges on HP Axis is inclined at (H.P)  

4. 40 70 30 Parts of Prism Base edges Vertical edges Top Edges b c d Parts of Prism Base edges Vertical edges Top Edges X Y   c                       b d a          

5. Sample problem for class work note Thursday, January 7, 2021 5 This Space is your convenience This is simple Position This is inclined Position Front View Top view

6. 6.Problem on Pentagonal prism Thursday, January 7, 2021 6 A pentagonal prism of base side 30 mm and height 75mm resting on its base corner on HP such that, the axis is inclined at 60 ° to H.P and parallel to VP . Draw its projections. Given : Pentagonal prism Base side= 30 mm Height= 75 Resting one its base Corner on HP Axis is inclined at (H.P)   Parts of Prism Base edges Vertical edges Top Edges b c d e Parts of Prism Base edges Vertical edges Top Edges

7. X Y 60 ° 30 75                                                        

8. Thursday, January 7, 2021 8 A Hexagonal prism of base 40 mm and height 60 mm is resting on one of its base edge on HP, such that its axis inclined at 40 to HP and parallel to VP. Draw its projection.   Q Homework

9. Homework problem Q1 solution for class work Note: Thursday, January 7, 2021 9

10. Special conditions of pyramid: Thursday, January 7, 2021 10 1.One of the triangular face resting on HP and Perpendicular to VP. Step : 1(Triangular face) Any Object resting on base Edges. Step :3

11. Special conditions of pyramid: Thursday, January 7, 2021 11 2 .One of the triangular face resting on HP and Parallel to VP. Step : 1(Triangular face) Any Object resting on base Edges. Step :3

12. Special conditions of pyramid: Thursday, January 7, 2021 12 3 .One of the slant Edges resting on HP and Perpendicular to VP. Step : 1(Slant Edges) Any Object resting on base Corner. Step :3

13. Special conditions of pyramid: Thursday, January 7, 2021 13 4.One of the slant Edges resting on HP and Parallel to VP. Step : 1(Slant Edges) Any Object resting on base Corner. Step :3

14. 4.Problem on Hexagonal pyramid Thursday, January 7, 2021 14 A Hexagonal pyramid of side 30 mm and height 75 mm is resting with one of its slant edge on HP and parallel to VP . Draw plan and Elevation. Given : Hexagonal pyramid Base side= 30 mm Height = 75 one of its slant edge on HP And Parallel to VP Parts of Pyramid Base edges Apex or vertex Slant Edges o b b c c d d e e f f Parts of Pyramid Base edges Apex or vertex Slant Edges o

15. X Y 30 75     d c e f o   a                 b a c f e d b o 1.Top View 2. Front View 3.Final Front View 4.Final Top View

16. 2.Problem on Pentagonal pyramid Thursday, January 7, 2021 16 A Pentagonal pyramid of side 40 mm and height 80 mm is resting with one of its base corner on HP and its axis is inclined at 30 to HP and parallel to VP . Draw the projections. Given : Pentagonal pyramid Base side= 40 mm Height = 80 mm one of its base corner on HP Axis is inclined at (H.P ) Base inclined =   Parts of Pyramid Base edges Apex or vertex Slant Edges o b b c c d d e e Parts of Pyramid Base edges Apex or vertex Slant Edges o

17. X Y 8   6   d c e o   a             b 4   o a e b d c 3.Final Front View 4.Final Top View 2. Front View 1.Top View

18. Thursday, January 7, 2021 18 A hexagonal pyramid of base 30 mm and height 60 mm is resting on one of its base edges on HP and such that the axis inclined at to HP and parallel VP . Draw its projection.   Q2 Homework

19. Homework problem Q2 solution for class work Note: Thursday, January 7, 2021 19

20. 3 .Problem on cone Thursday, January 7, 2021 20 A cone of base diameter 5 0 mm and axis length 6 0 mm is resting on HP .The axis is inclined 40 to HP and parallel to VP . Draw the projections. Given : Cone Base diameter= 5 0 mm Axis Length= 80 mm Axis is inclined at (H.P ) Base inclined =   Parts of Pyramid Base sides or base point Apex or vertex Generator o b b c c d d e e f f g g h g Parts of Pyramid Base sides or base point Apex or vertex Generator o

21. X Y 8   4   d c e o   a     b 50 o a e b d c 3.Final Front View 4.Final Top View 2. Front View 1.Top View g h                   f h g f

22. Thursday, January 7, 2021 22 A cone of base diameter 60 mm and height 75 mm is resting on HP, such that one of the generator is perpendicular to HP . Draw its projection. Q3 Homework

23. Homework problem Q3 solution for class work Note: Thursday, January 7, 2021 23

24. 5.Problem on Cylinder Thursday, January 7, 2021 24 A cylinder of base diameter 5 0 mm and axis length 70 mm is resting with one of its generator on ground . It is axis is inclined at 40 ° to H.P and parallel to VP . Draw its projections. Given : Cylinder Base Diameter= 5 0 mm Height = 70 One of its Generator Ground. Axis is inclined at (H.P)   Parts of Prism Base sides or base point Generator Top sides or Top point b c d e f g h Parts of Prism Base sides or base point Generator Top sides or Top point

25. X Y 7   4   o 50 a e b d c 3.Final Front View 4.Final Top View 2. Front View 1.Top View   h g f                                                                      

26. Thursday, January 7, 2021 26 A Cylinder of base diameter 50 mm and axis height 70 mm is resting on HP on one of the base points, such that the axis of the cylinder is inclined at 30 to HP and parallel to VP. Draw its projection.   Q4 Homework

27. Homework problem Q4 solution for class work Note: Thursday, January 7, 2021 27

28. Thursday, January 7, 2021 28