MAYURBHANJ SCHOOL OF ENGINEERING

TOPIC – INTERNAL THREADING OF HOLE/BLIND HOLES USING HAND TAPS

LAB/ PRACTICAL :- AMS-I

BRANCH - AUTOMOBILE ENGINEERING

SEMESTER - 4^th (SUMMER:2022)

1994

PREPARED BY – SUBRAT KUMAR PANDA

HOW DO YOU CUT INTERNAL THREAD WITH HAND TAPS -

To cut a straight internal thread, you can use a try square and place it at right angles to the tap. Here you can use cutting spray again. Friction between the chip and the tap cutting edges and thus also the necessary torque is reduced. This ensures better chip removal.

WHICH HAND TOOL IS USED TO FORM INTERNAL THREAD IN A HOLE -

Concept: Tapping: It has been defined as a process for producing internal threads using a tool (tap) that has teeth on its periphery to cut threads in a predrilled hole. A combined rotary and axial relative motion between the tap and the workpiece forms threads

WHAT TYPE OF HAND TAP SHOULD BE USED TO FINISH THE THREAD-

Taper taps are the easiest taps to use by hand because the material removed is done with so many partial forms of the taps thread. Taper taps are normally used in through hole applications or as a starter tap for blind holes.

WHAT ARE THE THREE MAIN TYPES OF TAPS USING TO MAKE THREAD-

There are 3 main taps you should be familiar with and they are: Taper, Plug, and Bottoming tap. The taper tap can be identified by the visible and pronounced tapering of the cutting edges.

PROCESS OF INTERNAL TREADING OF HOLE BLIND HOLES USING HAND TAPS -

When cutting the thread, the taper tap is placed in the wrench. The ‘taper’ end of the tap is placed in the hole. The wrench is turned clockwise for a full rotation and then half a turn in an anticlockwise rotation. This clears debris from the hole being threaded. 

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