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  2. Hole punch - Wikipedia

    en.wikipedia.org/wiki/Hole_punch

    A related office tool is the eyelet punch. This is a single-hole punch which also crimps a metal fastening loop around the hole, similar to a rivet. It is used to permanently secure a few sheets of paper together. A similar tool, generally known as a holing pincer, is used in animal husbandry.

  3. Punch (tool) - Wikipedia

    en.wikipedia.org/wiki/Punch_(tool)

    A punch is a tool used to indent or create a hole through a hard surface. They usually consist of a hard metal rod with a narrow tip at one end and a broad flat "butt" at the other. When used, the narrower end is pointed against a target surface and the broad end is struck with a hammer or mallet , causing the blunt force of the blow to be ...

  4. Punch press - Wikipedia

    en.wikipedia.org/wiki/Punch_press

    Quick change tool system (left: die; front: punch, split punch retainer; back: tool body; right: punch guide) A die set consists of a set of punches and dies which, when pressed together, form a hole in a workpiece (and may also deform the workpiece in some desired manner). The punches and dies are removable, with the punch being attached to ...

  5. Punching - Wikipedia

    en.wikipedia.org/wiki/Punching

    Punching is a forming process that uses a punch press to force a tool, called a punch, through the workpiece to create a hole via shearing. Punching is applicable to a wide variety of materials that come in sheet form, including sheet metal, paper, vulcanized fibre and some forms of plastic sheet. The punch often passes through the work into a ...

  6. 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.

  7. Digging bar - Wikipedia

    en.wikipedia.org/wiki/Digging_bar

    Typically, each end has a different shape so as to provide two different tool functions in one tool. Common end shapes include: Blunt — a broad, blunt surface for tamping. Point — for breaking hard materials and prying. Wedge — an unsharpened blade for digging, breaking and prying. A San Angelo bar has a wedge at one end.