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2. 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 ...

3. Hole punch - Wikipedia

   en.wikipedia.org/wiki/Hole_punch

   A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder (such collected sheets are called loose leaves). A hole punch can also refer to similar tools for other materials, such as leather, cloth, or sheets ...

4. 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 ...

5. Knockout punch - Wikipedia

   en.wikipedia.org/wiki/Knockout_punch

   Chassis punches: assorted sizes round and square Chassis punches: assorted sizes round and square disassembled. In metalworking, a knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, [1] is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw.

6. Types of press tools - Wikipedia

   en.wikipedia.org/wiki/Types_of_press_tools

   Punch Holder: This plate is used to accommodate the punches of press tool. Punches : To perform cutting and non cutting operations either plain or profiled punches are used. Die Plate: Die plate will have similar profile of the component where cutting dies usually have holes with land and angular clearance and non cutting dies will have profiles.

7. Automatic center punch - Wikipedia

   en.wikipedia.org/wiki/Automatic_center_punch

   The automatic center punch mechanism has been used for a wide variety of other applications. These include Marking and starting a hole for drilling without the bit "walking" out of alignment; Letter stamp sets; Glass-breaking tools used in rescue work and a common tool for a car thief. Impact tool for hardness testing [21]