calculate, in each case: (i) Size of punch (ii) Size of die (iii) Force required

Question

For punching 10 mm circular hole, And cutting a rectangular blank of 50 $\times$ 200 mm from a sheet of 1 mm thickness (mild steel, shear stress – 240 N/mm²), calculate, in each case:

(i) Size of punch                                         (ii) Size of die

(iii) Force required