5. (a) List the important parameters that affect the sheet metal forming process. Select 3 parameters and explain them i

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5 A List The Important Parameters That Affect The Sheet Metal Forming Process Select 3 Parameters And Explain Them I 1 (125.85 KiB) Viewed 13 times

5. (a) List the important parameters that affect the sheet metal forming process. Select 3 parameters and explain them in more detail. [6 marks] (b) A straight bead is being formed on a 1 mm thick aluminium sheet in a 24mm diameter die as shown in figure below. The yield strength is 90MPa and stiffness is 70.3 GPa. Considering springback, calculate the outside diameter of the bead after it is formed. Die [5 marks] (c) If the same thickness of aluminium sheet is bent to a radius 12mm, and the final bend angle after springback is 70°. What is the required bend angle? [3 marks] (d) Describe Die-cutting and Fine Blanking using appropriate diagrams [6 marks] Total marks: 20