1. ASSEMBLY AND DETAIL DRAWING

2. Assembly and detail drawings
There are several different types of engineering drawings:
Detail drawings (single part drawing)
Assembly drawing
Collective part drawing
Combined detail and assembly drawing
Exploded drawing assembly

3. Detail drawings
Used as the main reference in the manufacture of individual components
Should give complete detailed information to manufacture the component
Should completely define shape and size
Include all dimensions and tolerances
Should include information related to material, treatment, surface finish, inspection required.

4. Detail drawing

5. Assembly drawing
Used to show how a number of components are fitted together to make a complete product unit
Will have min. info. such as overall size
Each individual components is referenced by a number in a circle (balloon reference), and a leader pointing to it
Parts list table is indicated on the drawing

6. Assembly drawing

7. Collective part drawings
Alternative to single part drawing
Shows an item with all dimensions, but those dimension/s which vary will be given a letter and, by reference to a table, the size/s and the part number can be obtained
E.g. rivets or bolts
The items have the same form but dimensions may vary

8. Collective part drawings

9. Combined detail & assembly drawing
A combination of detailed and assembly drawing
Used to show each items and the assembly on one drawing sheet
Only suitable for small products, and simple assembly

10. Combined detail & assembly drawing

11. Exploded assembly drawing
A pictorial drawing showing all components in a 3D form in their correct position for assembly
Useful in DIY kit and giving information to not technically trained people  

12. Exploded assembly drawing

13. End of Chapter [11] References:
Engineering Drawing, A.W. Boundy, McGraw-Hill, 2000
Fundamentals of Graphics Communication 3rd Edition, Gary Bertoline & Eric Weibe, McGraw-Hill