Document NEq4qq173GmBNkY2nvyxdz4QE

Cold Forming of Metals PRESS, bench a press small enough to be mounted on a bench or table Press, C-FRAME A press having uprights or housing shaped like the letter "C " This type of press is usually inclinable and has an open back Press, double-action A press equipped with two moving slide members, one inside the other Press, double-action mechanical A press having one slide within the other, the outer slide usually being toggle or cam oper ated, resulting m independent parallel slide movements PRESS, DOUBLE-CRANK A mechanical single action press in which two cranks on the same shaft operate the slide The press may be a straight side press or an overhanging or gap frame press Press, eccentric A mechanical press in which an eccentric and strap are used to move the slide instead of a crankshaft and connec tion Press, four-point A press with a slide actuated by four connections and four cranks, eccentrics, or cylinders On this type of press, pressure at the comers of the slide is equalized Press, gap frame A press with uprights or housing made in the form of the letter "C" so that both ends of the die space are acces sible Press, horn A mechanical press with straight front and equipped with, or arranged for, a horn for doing operations such as form ing, set down, piercing, and riveting hollow, cylindrical, or odd-shaped work PRESS, INCLINABLE A press whose mam frame mav be tilted backward, usually up to 45 degrees, to facilitate ejection of parts bv gravity through an open back Press, inclined A press having the frame built in a fixed inclined position Press, knucklejoint A heavy, powerful short-stroke press with a slide actuated by a single toggle joint which is closed and opened by means of the connection and crank It is used for embossing, coining, and similar operations Press, open back inclinable (OBI) An inclinable press in which the opening at the back between the uprights is usually slightly more than the left to nght dimension of the side flange It is one of the most common small presses Press, punch Most commonly, an end wheel gap press of a fixed type The term also is used loosely to refer to any mechanical press Press, straight side A mechanical press with uprights or housing having plain, fiat sides (usually vertical) which bound or en close the left and nght sides of the die space Press, toggle A double- or triple-action mechanical press in which a slide or slides are actuated by one or more toggle joints Press, triple-action A press having three slides with three motions synchronized for such operations as drawing, redrawing, and forming The third motion is opposite in direction to the first two and is usually lo cated within the press bed Press, two-point A mechanical press m which the slide is operated by two connec tions to the crankshaft Primary operation Blanking, piercing, comer cutting, staking, assembling, and other types of metal forming or cutting in which stnp or coil stock is fed into the die without need for the operator to place his hands between the dies, or when processing a large part m which case his hands are a reasonable distance from the operation Punch The male die part, usually the upper member (punch holder), mounted on the slide The punch is generally used for forming, piercing, cutting, or blanking dies (Fig 25-6) Punch holder The plate to which the punch and other parts m the upper half of the die assembly are mounted and which in turn is clamped or bolted to the press slide Punch holder shank That portion of the punch holder which is clamped m the slide of the press Ram See Slide 700