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2. Knockout punch - Wikipedia

   en.wikipedia.org/wiki/Knockout_punch

   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. There are three different drive systems: manual, ratchet, and hydraulic. [2]

3. Punching - Wikipedia

   en.wikipedia.org/wiki/Punching

   The punch force required to punch a piece of sheet metal can be estimated from the following equation: [4] F = 0.7 t L ( U T S ) {\displaystyle F=0.7tL(UTS)} Where t is the sheet metal thickness, L is the total length sheared (perimeter of the shape), and UTS is the ultimate tensile strength of the material.

4. Greenlee - Wikipedia

   en.wikipedia.org/wiki/Greenlee

   Greenlee is an American industrial and electrical tool company headquartered in Rockford, Illinois.It was founded in 1862 by twin brothers Robert L. and Ralph S. Greenlee to manufacture their invention called a hollow chisel mortiser, consisting of a drill surrounded by four chisel blades used in making mortises (the hole) for mortise and tenon joints, for the furniture industry in Rockford. [1]

5. Punch press - Wikipedia

   en.wikipedia.org/wiki/Punch_press

   Punch presses are large machines with either a 'C' type frame, or a 'portal' (bridge) type frame. The C type has the hydraulic ram at the top foremost part, whereas the portal frame is much akin to a complete circle with the ram being centered within the frame to stop frame deflection or distortion.

6. Tube tool - Wikipedia

   en.wikipedia.org/wiki/Tube_tool

   The knockout tool is inserted into the tube and the impact pneumatic hammer is actuated to punch out the tube stub. Tube Installation (Tube Expanders) - Tube Expanding is the art of reducing a tube wall by compressing the outer diameter of the tube against a fixed container such as rolling tubes into tube sheets, drums, ferrules or flanges.

7. Power-punching Naoya Inoue helping fuel boxing's modern ...

   www.aol.com/sports/power-punching-naoya-inoue...

   Japan's Naoya Inoue reacts after winning against Philippines' Nonito Donaire during their Bantamweight unification boxing match at Saitama Super Arena in Saitama on June 7, 2022.