sheet_metal - Sheet Metal Forming Processes • shearing ,...

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Unformatted text preview: Sheet Metal Forming Processes • shearing , bending , stretching • involves workpieces with a high ratio of surface area to thickness • plates, thickness > ¼ inch • sheets, thickness ≤ ¼ inch • typical items produced by sheet-metal forming processes: metal desks appliance bodies hubcaps aircraft panels beverage cans car bodies kitchen utensils • sheet metal is formed by rolling; if the metal is thin, it is generally coiled Chap 2 , sheet metal – p. 1 SHEARING • cutting sheet metal by subjecting it to shear stresses • punch and die • variables of the shearing process punch force speed of the punch lubrication punch and die materials corner radii of punch and die clearance between punch and die Chap 2 , sheet metal – p. 2 • the clearance distance between the punch and die is the major factor determining the shape and quality of the sheared edge • as the clearance increases, the edges become rougher • the punch does not have to go all the way through the sheet • a burr is usually formed on the sheet and the slug Chap 2 , sheet metal – p. 3 •...
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This note was uploaded on 10/18/2011 for the course EML 2023L taught by Professor M.braddock during the Spring '11 term at University of Florida.

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sheet_metal - Sheet Metal Forming Processes • shearing ,...

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