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Programmable back gages, and multiple die sets currently available can make bending a very economical process. 1. Page 2. BEND ALLOWANCES. When sheet metal is The bending and forming of metals are cold working operations which involve plastic deformation of the workpiece. The metal has to be stretched beyond the. Tools include punch, die that are used to deform the sheets. Classification of basic sheet forming processes. Bending. Deep drawing shearingCuDng: It involves processes such as punching, shearing and blanking. Bending: Deform the sheet around a straight axis. Drawing: Deform the sheet into convex or Bending. Straining sheet metal around a straight axis to take a permanent bend. 2. (a) Bending of sheet metal. (b) both compression and tensile. SHEET. METALWORKING. 1. Cutting Operation. 2. Bending Operation. 3. Drawing. 4. Other Sheet-metal Forming. 5. Dies and Presses. 6. Sheet-metal Operation. 1.1 Sheet metal bending. Bending of sheets and plates is widely used in forming parts such as corrugations, flanges, etc. Bending is a forming operation in bending, and drawing. “Stamping press” Machine tool that performs most sheet metal operations. “Stampings”Sheet metal products