Define punching and blanking. Describe the various types of die such as i) Inverted die ii) Compound die and iii) Progressive die.

A steel washer with 30 mm outside diameter with 16 mm hole will be produced from 1.5 mm thick sheet metal with a progressive die. The ultimate shear strength of the material is 32 kg/cm$^2$.
i) Assuming 75% efficiency, find out the press capacity.
ii) Assuming shrinkage allowance as 0.05 mm and clearance as 6% of thickness, find out the punch and die size for piercing and blanking operation. Draw the designed punch and die for each case.

Calculate the blank length to make the part shown in figure 8(a). Also determine the bending force required if the ultimate tensile strength of material is $3500 \text{ kg/cm}^2$, die radius 8 mm, bend length 120 cm, die opening factor 2.66, thickness 2 mm.

What is drawing? What are the basic difference between shallow and deep drawing? Briefly explain the factors that affects drawing process.

Calculate the blank diameters to make the shell shown in figure 8(c). (All dimensions are in mm)

What is Bending operation of metal forming? Describe the Bending diagram with proper image

What is drawing? What factors affect the drawing process?

A shell is to have its wall thickness reduced from 1.8 mm by 11%. The new shell will have a new diameter of 40 mm. Determine (i) Mean height of the shell if shell height after ironing is 70 mm and (ii) Shell diameter needed to draw the ironed shell.

Compare among compound die, combination die and progressive die.

Calculate the center of pressure for the part shown in Figure 7(b). Ignore tolerances in the dimensions.

A steel component 20mm×70mm is to be made from 2mm thick sheet. Sketch the scrap strip layout. Also, determine percentage of stock used.

Define range ratio ($R_n$). Show that $z = \frac{\log R_n(\phi)}{\log \phi}$

Explain 3-2-1 locating principles with necessary figures.

Explain the following press-work operations: (i) Blanking (ii) Piercing (iii) Notching (iv) Lancing.

What is stock strip layout? Describe the bending diagram.

What is bending allowance? What are the effects of die clearance? Explain.

A 20 mm wide and 7 mm thick C20 steel sheet is required to be bent at 77° at bend radius 12.50 mm. Determine bend allowance.

Describe the roll forming process.