Wednesday, May 12, 2010

All about stamping

Posted by Amdani at 10:19 AM
Sheet metal processing The raw material for sheet metal manufacturing processes is the output of the rolling process. Typically, sheets of metal are sold as flat, rectangular sheets of standard size. If the sheets are thin and very long, they may be in the form of rolls. Therefore the first step in any sheet metal process is to cut the correct shape and sized ‘blank’ from larger sheet.
Intro Sheet metal processes involve plane stress loadings and lower forces than bulk forming
Almost all sheet metal forming is considered to be secondary processing The main categories of sheet metal forming are
Shearing
Bending
Drawing
Shearing
Shearing is a sheet metal cutting operation along a straight line between two cut-ting edges by means of a power shear.
Blanking and punching
Blanking and punching are similar sheet metal cutting operations that involve cutting the sheet metal along a closed outline. If the part that is cut out is the desired product, the operation is called blanking and the product is called blank. If the remaining stock is the desired part, the operation is called punching. Both operations are illustrated on the example of producing a washer
Bending
Bending is defined as the straining of the sheet metal around a straight edge
Drawing
Drawing is a sheet-metal operation to make hollow-shaped parts from a sheet blank

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