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  2. Automatic center punch - Wikipedia

    en.wikipedia.org/wiki/Automatic_center_punch

    An exploded view of an automatic center punch. An automatic center punch is a hand tool used to produce a dimple in a workpiece (for example, a piece of metal). It performs the same function as an ordinary center punch but without the need for a hammer. When pressed against the workpiece, it stores energy in a spring, eventually releasing it as ...

  3. Punching machine - Wikipedia

    en.wikipedia.org/wiki/Punching_Machine

    A punching machine is a machine tool for punching and embossing flat sheet-materials to produce form-features needed as mechanical element and/or to extend static stability of a sheet section. According to the file, Richard Walsh, the county of Grayson, and the State of Texas had invented and applied for US patent in 1894.

  4. Progressive stamping - Wikipedia

    en.wikipedia.org/wiki/Progressive_stamping

    Progressive Die is a metalworking method that can encompass punching, coining, bending and several other ways of modifying metal raw material, combined with an automatic feeding system. The feeding system pushes a strip of metal (as it unrolls from a coil) through all of the stations of a progressive stamping die. [1]

  5. Stamping (metalworking) - Wikipedia

    en.wikipedia.org/wiki/Stamping_(metalworking)

    Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press , blanking, embossing ...

  6. List of the United States Army weapons by supply catalog ...

    en.wikipedia.org/wiki/List_of_the_United_States...

    Automatic weapons, small mortars, carts, and light artillery. A1 Major items, and Major combinations of; A2 Cal. .50 machine gun Browning M1921 water cooled; A3 Material, antiaircraft, automatic gun - Parts and equipment; A4 Cal. .30 Browning Automatic Rifle M1918, and M1918A1; A5 Cal. .30 machine gun M1917A- (M1917 Browning machine gun)

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