Mechanical Engineering - Workshop Technology - Discussion

The Answer is option C punching belongs to circular, piercing belongs to other than circular.

Answer C is right.

Blanking is the right answer.

Punching is the right answer.

Punching is the right answer.

Ref: R S Khurmi.

Punching is the correct answer.

Yes. It is punching.

According to me, Option C is correct.

Option C is correct because the piercing is punch hole other than cylindrical.

The correct answer is piercing.

Piercing is the operation of cutting a cylindrical hole in a sheet of metal using a punch and die. The punch is pressed through the metal, creating a hole, while the die supports the metal and helps to shape the hole.

Here's why the other options are incorrect;
- Shearing: Shearing is a cutting operation that uses a shear blade to cut a straight line in a sheet of metal.
- Punching: Punching is a general term that refers to the use of a punch and die to cut or shape a hole in a sheet of metal, but it can include various operations like piercing, blanking, and more.
- Blanking: Blanking is the operation of cutting a flat shape or profile from a sheet of metal using a punch and die, but it does not specifically involve cutting a cylindrical hole.

=> Piercing is a common operation in sheet metalworking and is often used to create holes for bolts, rivets, or other fasteners.