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Tsukkake or Tsuki-kake: Straight punch; Mae-naname-ate: Front crossing blow; Naname-tsuki or Mawashi-tsuki: Roundhouse punch or circular punch; Tsuki-age or Ago-tsuki: Uppercut; Uchi-oroshi or Uchi-kake: Downward strike or hammer fist; Yoko-ate: Side strike or backfist; Yoko-uchi: Strike to side; Gammen-tsuki: Thrust punch or jab; Kami-ate or ...
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 an impulse that drives the punch, producing ...
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.
A liver shot or liver punch is a punch, kick, or knee strike to the right side of the ribcage that damages the liver. Blunt force to the liver can be excruciatingly painful, but mostly lasts only about 30 seconds to one minute. An especially effective shot will incapacitate a person instantly. [1]
A "hollow-faced" punch has a raised contour (circular, or with some other shape) with a hollowed-out middle, and is used to stamp that contour, usually on the front face. A lightweight "chasing hammer", to drive the punches. An oxyacetylene torch, blowtorch, or a forge for annealing or hot-working.
An overhand (or overcut or drop) punch is a semi-circular and vertical punch thrown with the rear hand.It is usually employed when the opponent is bobbing or slipping.The strategic utility of the drop relying on body weight can deliver a great deal of power.