Mechanical Engineering - Workshop Technology - Discussion
Discussion Forum : Workshop Technology - Section 3 (Q.No. 21)
21.
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
Discussion:
31 comments Page 1 of 4.
Rathi said:
1 decade ago
Piercing is a shearing process where a punch and die are used to create a hole in sheet metal or a plate. The process and machinery are usually the same as that used in blanking, except that the piece being punched out is scrap in the piercing process.
There are many specialized types of piercing: lancing, perforating, notching, nibbling, shaving, cutoff, and dinking.
Rams said:
10 years ago
Option B is wrong. Correct answer is option C (Piercing is for making hole other than cylindrical hole).
DSM said:
10 years ago
Piercing and punching is the same thing.
In piercing cylindrical holes are treated as scrap.
In piercing cylindrical holes are treated as scrap.
Jaydeep dobariya said:
10 years ago
Piercing is operation for cutting hole other than circular shape. And punching is cutting hole of circular shape in sheet metal.
Pinku ram said:
10 years ago
Good and nice explanation.
Raghu from hassan said:
9 years ago
Punching is the correct answer.
Ravi gawale said:
9 years ago
In the piercing operation the small holes are cut where in the punching the optimum standard holes are cut.
Example of piercing is creating holes on the electronic circuit to place the electronic small component.
Example of piercing is creating holes on the electronic circuit to place the electronic small component.
DHIRENDRA KUMAR said:
9 years ago
Punching is correct please refer to RS Khurmi objective book page no. -671 question no. -123 workshop technology.
Ashish patel said:
9 years ago
The right answer is a punching reference R. S. Khurmi.
Younas said:
9 years ago
Punching is the correct answer.
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