Threading and Tapping

Ø Aim – Threading a Rod and Tapping a Hole.

Ø Tools – Vernier Caliper, Bench Vice, MS Square Plate, Taps, Drill Bit, Tap Holder.

Ø Info – Tapping has 3 Types:

·       Primary Tap – Is soft at bottom which creates a path.

·       Secondary Tap – Has Sloping Threads.

·       Taper Tap – The final tap which completes the path fully.

Tapping means threading an already drilled hole object from the inside to fit a bolt in it. The type of path used in tapping is the Helical Path.

British Tap has big thread spacing and a metric Tap has smaller complex thread spacing.

Firstly, any hole is drilled first the reamed, after reaming the hole is then tapped.

Reaming means cleaning a drilled hole.

Tapping means making threads from the inside of the hole.

Ø Procedure –

1.   Take a square plate with a thickness of 5mm. (50*50*5) mm.

2.   That square plate should be equal.

3.   Brush away the rust from the plate.

4.   Fix the plate on a drill vice.

5.   Drill the plate.

6.   Clean the hole using a reamer.

7.   Fix the primary tap in the stock.

8.   Fix the steel plate in a bench vice.

9.   Then start to tap it like a screw.

10.         Do it 1 – 2 times then fic the secondary tap and so on.

11.         While doing this use cutting oil to prevent tool damage.

12.         In this way you tapping will get completed.

Ø Conclusion – From the above I understood how to do Threading and Tapping.

Di-range

Taps

Die range