punch

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Related to punching: punching shear, punching bags

punch

(pŭnch),
An instrument for making a hole or indentation in some solid material or for driving out a foreign body in such material.
[L. pungo, pp. punctus, to stick, to punch]

punch

An instrument for making a small circular hole in material or tissue, esp. the skin.

punch

a metal, rodlike instrument with one pointed or cavitied end and one propulsion end to be pushed hard with the palm of the hand or driven with a hammer in order to drive a hole or to excise a small round piece of tissue.

punch biopsy
a circular piece of skin excised by a hand driven biopsy punch. See also keyes punch.
dental punch
has a slight cavity at the end so that the tooth to be driven will seat into the end and not slip off.
punch graft
see punch graft.
References in periodicals archive ?
Operating in a new 220,000-sq-ft facility, the company handles CNC punching, milling, and EDM, as well as automated wet and powder coat painting, laser cutting, welding, screenprinting, and automated assembly.
By employing hand geometry biometrics with our Gatekeeper software, we are utilizing new technology to control our payroll costs, eliminating buddy punching and watching the clock for rounding punches," reports Martha Drescher, Bay Colony Golf Club controller.
A word on the theory and the philosophy behind the die: The theory is that since slug pulling is the condition where the slug returns to the top of the sheet during the return portion of the punching cycle, and can then interfere with subsequent punching cycles causing damage to the piece part and the tooling, then the best counter to this condition is for the slug to pass through the die and on down into the slug chute with each cycle.
FirstBank needed to reduce or eliminate buddy punching throughout its organization, and it wanted to gather more accurate information on employees," reports Juan Ignacio Gomez, director of sales and marketing for Interboro Systems Corporation (ISC), the Puerto Rico-based dealer that installed the HandPunch units.
Custom Air-Plenums (Bean Station, TN), a world-leader in the manufacture of air handling systems for schools, trucks, and commercial buildings, fabricates stainless steel panels and requires high speed punching of different hole shapes and sizes for positioning air flow openings, wiring, and rivets.
The minimum distance between the cavities depends on the punching process, the part contour and size, and whether cavity inserts are used in the injection mold or not.
This may sound familiar: When punching thick materials such as stainless and galvanized steel, a manufacturer often has to run the punch press at greatly reduced operating speeds in order to get high quality parts.
This relationship was formed to streamline the production of ready-to-bind documents as part of an on-line punching and printing process.
ENCINO - Actor Ron Sarchian punched his way Wednesday into the Guiness Book of World Records, hitting a 100-pound bag for more than 24 hours and 16 minutes straight - and he expects to still be punching today.
For example, Amada America introduced the Libra 205 punching machine for large parts, a new machine that combines some of the features of a CNC punching machine with those of a traditional coil-fed stamping press.
Sarchian set out at midday Tuesday to top the 24 hours and 16 minutes listed in the Guinness Book of World Records as the record time for punching the heavy bag.
The companies involved are Jagenberg DIANA GmbH in Neuss, which manufactures folding-box and corrugated board gluers, and Woschnik + Partner Maschinenbau GmbH, which produces punching machines in Moenchengladbach.