Mazhar Iqbal BS Mechanical Engineering Pakistan Institute of Engineering and Applied Sciences (PIEAS) Islamabad, Pakistan

2. SPANNER
Presented by: Mazhar Iqbal
In British English, spanner is the standard term
In American English, wrench.

3. Types of Spanners
Ring spanner Combination spanner
Adjustable spanner Pipe Spanner
Alligator wrenchDie wrench Chuck key
Allen wrench
Open end Spanner

4. Drawing

5. Drawing

6. Material selection
Mild steel: (0.05–0.3% carbon)
Malleable and ductile
 Low tensile strength
Light Weight
Price is relatively low

7. Manufacturing Processes
Cutting
Milling
Drilling
Sawing
Grinding
Filing
Punching
These Manufacturing processes were used:

8. Cutting
• By Abrasive Disc
• A rectangular(180×45) sheet was obtained

9. Punching
After cutting the sheet of
dimensions:(180mm×45mm×5mm)
The sheet was punched according to the
drawing.
The use of coolant may erase the ink marks so
I did punching.

10. Milling
• Face milling

11. Face milling
How Milling Was Done?

12. Grinding
 To remove the material from the edges

13. Drilling
• Through holes

14. Sawing
• Hack saw to remove material

15. Surface Finishing
Grinding
Filing
Sand Paper(final)

16. Grinding
Rough sheet was made
smooth
Remove rusty
surface(Hand Grinder)

17. Filing
 SQUARE FILE:
fits into corners well.
 HALF ROUND FILE:
for curved surfaces
 Round File:
Very narrow
curved surfaces
 Precaution:

18. Filing
Finishing
Dimensional accuracy(mainly square)

19. Punching
Spanner Jaw Sizes
(Numeric punch)
Name
(Letter Stamps)

20. Final Product

21. Cutting
Milling
Grinding Drilling
Sawing
Grinding Filing
Punching
Process Summary

22. Problems
Material problem(Rusty scrap)
The Letter stamp was smaller than
Numeric Punch.
Filing(not as smooth as required for
finishing)
22

23. References
• http://en.wikipedia.org/w/index.php?title=Punch_%28tool%29&action=e
dit&section=10
• http://www.technologystudent.com
• http://www.sat.dundee.ac.uk/~psc/spanner_jaw.html
• http://en.wikipedia.org/wiki/Carbon_steel#Mild_and_low-carbon_steel

24. Thank
You