Assembly and Details machine drawing pdf

umesh chikhale
sveris college of engineering pandharpur

1. CHAPTER - 06 ASSEMBLY AND DETAILS DRAWING.
A] STEPS TO DRAW ASSEMBLY DRAWING FROM DETAILS DRAWING:-
1. Understand the purpose, principle of operation and field of application of the given machine.
This will help in understanding the functional requirements of individual parts and their
location.
2. Examine thoroughly, the external and internal features of the individual parts.
3. Choose a proper scale for the assembly drawing.
4. Estimate the overall dimensions of the views of the assembly drawing and make the outline
blocks for each of the required view, leaving enough space between them, for indicating
dimensions and adding required notes.
5. Draw the axes of symmetry for all the views of the assembly drawing.
6. Begin with the view from the front, by drawing first, the main parts of the machine and then
adding the rest of the parts, in the sequence of assembly.
7. Project the other required views from the view from the front complete views.
8. Mark the location and overall dimensions and add the part numbers on the drawing.
9. Prepare the parts list.
B] STEPS TO DRAW PART OR DETAILS DRAWING FROM ASSEMBLY
DRAWING:-
1. Understand the assembly drawing thoroughly, by referring to the parts list and the different
orthographic views of the unit.
2. Study the functional aspect of the unit as a whole. This will enable to understand the
arrangement of the parts.
3. Visualize the size and shape of the individual components.
4. As far as possible, choose full scale for the drawing. Small parts and complicated shapes may
require the use of enlarged scales so that their presentation will have a balanced appearance.
5. Select the minimum number of views required for describing each part completely. The view
from the front selected must provide maximum information of the part.
6. The under mentioned sequence may be followed for preparing different views of each part :
(i) Draw the main centre lines and make outline blocks, using the overall dimensions of the
views.
(ii) Draw the main circles and arcs of the circles.
(iii) Draw the main outlines and add all the internal features.
(iv) Cross-hatch the sectional views.
(v) Draw the dimension lines and add dimensions and notes.
7. Check the dimensions of the mating parts.
8. Prepare the parts list.

2. 1] PLUMMER BLOCK (PEDASTAL BEARING)

3. 1] DETAILS OF PLUMMER BLOCK

4. 2] ASSEMBLY OF CONNECTING ROD

5. 2] DETAILS OF CONNECTING ROD

6. 3] ASSEMBLY OF LATHE TAIL-STOCK

7. 3] DETAILS OF LATHE TAIL-STOCK

8. 4] ASSEMBLY OF GLAND &STUFFING BOX

9. 4] DETAILS OF GLAND & STUFFING BOX

10. 5]ASSEMBLY OF SCREW JACK

11. 5] DETAILS OF SCREW JACK

12. 6] CROSS HEAD ASSEMBLY

13. 6] DETAILS OF CROSS HEAD

14. 7] ASSEMBLY OF REVOLVING CENTRE

15. 7] DETAILS OF REVOLVING CENTRE

16. 8] ASSEMBLY OF MILLING MACHINE TAIL-STOCK

17. 8] DETAILS OF MILLING MACHINE TAIL-STOCK

18. 9] ASSEMBLY OF CRANE HOOK

19. 9] DETAILS OF CRANE HOOK

20. 10] ASSEMBLY OF NON-RETURN VALVE

21. 10] DETAILS OF NON-RETURN VALVE

22. 11] ASSEMBLY OF FEED CHECK VALVE

23. 11] DETAILS OF FEED CHECK VALVE

24. 12] ASSEMBLY OF PRESSURE RELIEF VALVE

25. 12]DETAILS OF PRESSURE RELIEF VALVE

26. 13] ASSEMBLY OF C-CLAMP

27. 13] DETAILS OF C-CLAMP

28. 14] ASSEMBLY OF SQUARE TOOL POST

29. 14] DETAILS OF SQUARE TOOL POST

30. 15]ASSEMBLY OF DRILL JIG

31. 15] DETAILS OF DRILL JIG

32. 16] ASSEMBLY OF INDEXING DRILL JIG

33. 16] DETAILS OF INDEXING DRILL JIG

34. 17] ASSEMBLY OF LEVER SAFETY VALVE

35. 17] DETAILS OF LEVER SAFETY VALVE

36. 18] ASSEMBLY OF SPRING LOADED RELIEF VALVE

37. 18] DETAILS OF SPRING LOADED RELIEF VALVE

38. 19] ASSEMBLY OF AIR VALVE

39. 19] DETAILS OF AIR VALVE

40. 20] ASSEMBLY OF BLOW OFF COCK

41. 20] DETAILS OF BLOW OFF COCK

42. 21] ASSEMBLY OF SELF CENTRING CHUCK

43. 21] DETAILS OF SELF CENTRING CHUCK

44. 22] ASSEMBLY OF FOUR JAW CHUCK

45. 22] DETAILS OF FOUR JAW CHUCK

46. 23] ASSEMBLY OF GATE VALVE

47. 23] DETAILS OF GATE VALVE

48. 24] DETAILS OF STEAM ENGINE CROSSHEAD

49. 24] ASSEMBLY OF STEAM ENGINE CROSSHEAD

50. 25] DETAILS OF CRANE HOOK
Note: - Dimensions of assembly and details drawing are different.

51. 25] ASSEMBLY OF CRANE HOOK

52. 26] DETAILS OF CLAPPER BLOCK

53. 26] ASSEMBLY OF CLAPPER BLOCK

54. 27] DETAILS OF MACHINE VICE

55. 27] ASSEMBLY OF MACHINE VICE

56. 28] DETAILS OF PIPE VICE

57. 28] ASSEMBLY OF PIPE VICE

58. 29] DETAILS OF SPEED REDUCER

59. 29] ASSEMBLY OF SPEED REDUCER

60. 30] DETAILS OF V-BELT DRIVE

61. 30] ASSEMBLY OF V-BELT DRIVE