GATE 2025 || Manufacturing & Engineering materials || Foundation Quiz 9

Which of the following statements is/are correct in punching sheet metal operation?

a. The diameter of the punch is equal to the diameter of the hole.

b. Clearance is provided on the die.

c. Shear is provided on punch.

d. All of above.

A cup of diameter d and height h is drawn from a blank of diameter D. The condition for this drawing operation to be shallow drawing is ______.

The maximum force required to punch a hole in a sheet is F_max . The maximum force required when the punch is provided with shear (s) and penetration is Pt is ______.(Assume force displacement curve is trapezoidal)

A 30 mm diameter disc is to be punched out from a steel sheet 2 mm thick. The diameter (in mm ) of the punch is _____ (Shear strength of material is 225 MPa)