Stamping punches metal sheet into desired shape Washington DC

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When stamping, a sheet is clamped around the edge and formed into a cavity by a punch. The metal is stretched by membrane forces so that it conforms to the shape of the tools. The membrane stresses in the sheet far exceed the contact stresses between the tools and the sheet, and the through-thickness stresses may be neglected except at small tool radii.

The operations associated with stamping are blanking, piercing, forming, and drawing. These operations are done with dedicated tooling also known as hard tooling. This type of tooling is used to make high volume parts of one configuration of part design. By contrast, soft tooling is used in processes such as CNC turret presses, laser profilers and press brakes. All these operations can be done either at a single die station or multiple die stations — performing a progression of operations, known as a progressive die. The equipment of stamping can be categorized to two types: mechanical presses and hydraulic presses.

A mechanical press has a mechanical flywheel to store the energy, transfer it to the punch and to the workpiece. They range in size from 20 tons up to 6000 tons. Strokes range from 5mm to 500mm (0.2-inch to 20-inch) and speeds from 20 to 1500 strokes per minute. Mechanical presses are well suited for high-speed blanking, shallow drawing and for making precision parts.

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Montgomery Mechanical Services

(301) 808-8000
1420 Ritchie Marlboro Road
Washington, DC