![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.](https://image.slidesharecdn.com/finalaanddsjs-161006045209/85/assembly-and-details-machine-drawing-pdf-1-320.jpg)
![1] PLUMMER BLOCK (PEDASTAL BEARING)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Assembly and Details machine drawing pdf
- 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