Abstract: A forging method serving to use shaping tooling suitable for high temperature forging of a preformed metal part having angular twist undercuts (49) in its final shape, the method comprising placing the preformed metal part on a movable central insert (44) of the tooling and blocking it in the tooling (40), and forming side fins of the preformed metal part (30) in their final shape by moving a movable top first die and the movable central insert in a common direction towards a stationary bottom die, the movable central insert including at least two cutaway zones (20, 52) for eliminating the angular twist undercuts and thus enabling the preformed metal part in its final shape to be dislodged in a single extraction direction.

Abstract: A bending device for forming a corrugation in a metal sheet, the bending device having a frame, a die having two die elements, each having a concave half-impression, mounted able to slide on the frame; a punch having a head able to engage inside the impression of the die so as to press the metal sheet; and two side clamps mounted sliding and able to move vertically with respect to the lower frame so as to clamp the metal sheet against the bearing surfaces of the die elements. During the displacement of the punch into its bending position, the metal sheet transmits a traction force to the die elements and to the side clamps so as to displace them into their near position.

Abstract: A molding method and a molding device are provided for removing distortion in a separator. In the molding method and the molding device, first and second dies which correspond to a product shape of first and second pre-molded surfaces of a separator base material. In a first molding step, the first die is pressed by applying an impact force towards the first molding surface side of the separator base material causing the separator base material to move towards the second dies. In the second molding step, the second dies are pressed towards the second molding surface side of the separator base material, and the molding part of the separator base material is sandwiched between the first die and the second dies.

Abstract: Flat-plate connecting portions are formed in a band plate by a connecting-portion forming unit. The flat-plate connecting portions are cut off by another connecting-portion forming unit except one flat-plate connecting portion so as to form a corrugated-plate connecting portion. A corrugated-plate portion is formed by a corrugation forming unit, so that the corrugated-plate portion has multiple projections arranged in a width direction of the band plate and each of the projections extends in a plate feeding direction. The corrugated-plate connecting portion corresponding to a predetermined connecting number is cut off so as to form a corrugated fin having a predetermined number of corrugated-plate portions.

Abstract: A hollow component is adjusted in shape, for example to correct circularity, by means of a shape adjusting tool. The tool comprises a base structure on which adjuster elements are guided. An adjustment ring has a ramp surface corresponding to each adjuster element so that rotation of the adjustment ring causes radial displacement of the adjuster elements 6. The adjuster elements are displaced in unison, and engage the internal surface of the component to be adjusted so as to deform the component to the desired shape. The segments are interconnected by rigid links and a single flexible link, and are supported on bearing rollers mounted on the base structure.

Abstract: An electric wire shaping apparatus includes a pair of male and female shaping dies and a pressing mechanism. Each of the male and female shaping dies has a shaping surface that includes a plurality of straight parts and a plurality of bent parts. The pressing mechanism moves one of the male and female shaping dies toward the other, thereby pressing a turn portion of an electric wire between the shaping surfaces of the male and female shaping dies in a width-wise direction of the turn portion. Furthermore, the male and female shaping dies are so configured that when they are located closest to each other, a gap W2 between a corresponding pair of the bent parts of the shaping surfaces of the male and female shaping dies is different in size from a gap W1 between a corresponding pair of the straight parts of the shaping surfaces.

Abstract: A system for reducing the diameter of a stent comprises a stent contracting assembly. The assembly comprises a plurality of blades, which define a diameter reduction chamber. The chamber has an open diameter configuration and a closed diameter configuration. The plurality of blades comprises active blades and floating blades, wherein each active blade is engaged to an actuation mechanism. The actuation mechanism is constructed and arranged to move each active blade from the open diameter configuration to the closed diameter configuration. Each floating blade is moved from the open diameter configuration to the closed diameter configuration only as a result of the movement of the active blades.

Abstract: It is difficult to bend materials for forming beyond 180° in terms of bend angle due to the entrant nature of prior press forming arrangements including a press tool with a press recess of a static nature. By providing a press recess which is formed from actuators allowed to dynamically shift about a deflection member it is possible as a press tool engages and forces a material to be formed into the press recess to envelope the press tool and therefore achieve greater than 180° bending angles. The actuators are formed in a stack with alternate left right presentation of shaped receiving apertures which include an actuator surface 34 engaged by the material to be formed in order to cause the necessary deflections during the pressing process.

Abstract: A system for reducing the diameter of a stent comprises a stent contracting assembly. The assembly comprises a plurality of blades, which define a diameter reduction chamber. The chamber has an open diameter configuration and a closed diameter configuration. The plurality of blades comprises active blades and floating blades, wherein each active blade is engaged to an actuation mechanism. The actuation mechanism is constructed and arranged to move each active blade from the open diameter configuration to the closed diameter configuration. Each floating blade is moved from the open diameter configuration to the closed diameter configuration only as a result of the movement of the active blades.

Abstract: A press brake tool for bending a workpiece includes a punch having a punch tip, a press brake die and a die holder fixing the die thereto. The press brake die includes a pair of rotary members and at least one elastic member. The press brake die further defines an elongated lateral groove facing the punch tip and at least one longitudinal through hole communicating with the lateral groove. The pair of rotary members is spaced from each other and rotatably received in the elongated lateral groove. The at least one elastic member is received in the at least one longitudinal through hole and abutting the pair of rotary members.

Abstract: A bottom tool/bending die for use in sheet metal forming. The bottom tool includes a pair of movable dies that provide substantially continuous support of a work piece as it is being deformed. Each die includes an upper surface configured to contact the work piece and having an inner and an outer edge. As the die moves in the tool, the inner edge of the upper surface is closer to a center of rotation of the die than the outer edge. In some embodiments, the upper surfaces of the dies are shaped so that a fixed separation is maintained between the inner edges of the dies as they rotate. In at least one embodiment, sector gears are used to control the motion of the dies.

Abstract: A tool, for making clinching connections, which has a multi-part matrix with matrix sheathing pieces that move to the outside and with counteracting springs. These springs are one-piece connected with each other through a connecting section. There are at least three sheathing pieces which are arranged axially symmetric around the centerline of the matrix.

Abstract: A metal sheet bending apparatus includes first and second lower bar molds each having a section of a semicircular shape. The first and second lower bar molds are rotatably provided in first and second concave portions of a support, respectively. First and second adjust screws are attached to first and second pull-up rods, respectively at an opposite side of the portions with respect to first and second stoppers. An upper mold is adapted to bend a metal sheet placed on metal contact surfaces of the first and second lower bar molds by pressing the metal sheet above a groove of the support while the first and second lower bar molds rotate against spring force given by first and second push springs such that the metal contact surfaces form a V-shape.

Abstract: A method of forming a ratchet wheel adapted to be disposed in at least one end of the ratchet wrench for engaging an element to be turned, includes the step of providing a wheel blank having a generally hollow, cylindrical body formed with a radially projecting rib located midway between an upper hub portion and a lower hub portion, the upper hub portion being integrally formed with an upstanding lip having a diameter equal to or slightly smaller than the diameter of the upper hub portion. The method also includes the step of bending the lip inwardly to form a retention ring adapted to engage the upper surface of the element to be turned and prevent the element from slipping through the wheel of the ratchet wrench.

Abstract: The end faces of the edge portions of a flat plate, which have been respectively cut into a given shape according to a trimming operation, are then respectively face-struck into a linear shape. Also, in the trimming operation, each of the edge portions of the flat plate is cut into a shape having a larger dimension than that of a finally required shape thereof, and the thus produced excess length portions of the edge portions are worked by compressing when a pair of semidivided cylindrical portions are butted against each other. Since a connecting portion situated between the pair of semidivided cylindrical portions is always pressed with a given pressure, the working properties of the connecting portion in the molding operation are prevented from being revived.

Abstract: A die assembly for use with a tool for bending flat metal stock, and including a pair of elongated plate members in the lower die member each having a surface to support a piece of flat metal stock, the plate members being pivotably connected and maintained approximately 180 degrees apart when a bending force is not applied to the metal stock. A surface of an expandable pressure container is positioned in contact with a plate support member, the pressure within the container being controlled in a manner such that the vertical position of the plate support member is fixed such that the plate members assume a selected angular orientation to enable the tool to form the desired bend in the metal stock.

Abstract: A die for use with a punch for bending flat metal stock and including a body defining a support surface adapted to support a piece of flat metal stock, a cavity disposed in a path of movement of the punch and intersecting and projecting below the support surface, and a stop surface forming a bottom wall of the cavity and having first and second surface portions; and a mounting retained by the body. A first elongated die bar is supported by the mouting for both translational and pivotal movement on a first axis in the cavity on one side of the path of movement; the first die bar defining upper and lower surfaces having a wedge shaped cross-section. A second elongated die bar also is supported by the mounting for both translational and pivotal movement on a second axis in the cavity on an opposite side of the path of movement; the second die bar defining upper and lower surfaces having a wedge shaped cross-section. This combination eliminates scoring during the bending of flat metal stock.

Abstract: An apparatus (10) and method for fabricating metal tubing of generally elliptical shape by cold pressing round tubing stock into the desired shape. The apparatus (10) includes a first pair of opposing dies (16 and 18) secured to the platens (12and 14) of a press for forming the substantially flattened sides of the tubing. A second pair of opposing dies, positioned substantially between and on either side of the first pair of dies, is provided for forming the substantially rounded sides of the elliptical tubing. Means (52) for providing a preselected rate of resistance to movement of the second pair of opposing dies as they are engaged by the substantially rounded sides of the tubing, such that the tubing can be pressed into the desired substantially elliptical shape defined by the die faces of the first and second pairs of opposing dies by operating the press to move the platens (12 and 14) toward one another, are provided.

Abstract: An improved die assembly for use with a punch is employed to produce stitch connections between sheets of rigid, deformable material. The die assembly includes an anvil body having a central anvil portion and a pair of arcuate depressions respectively on opposite sides of the central anvil. A pair of die portions are pivotally mounted on opposite sides of the anvil and include curved sections which are conjugally received within the depressions of the anvil body and function to transmit force applied by the punch through the curved sections to the anvil body, thereby relieving the pivotal connections from undue stress. The die portions and the anvil body are provided with opposing surfaces between which there are trapped coil springs for urging the die portions toward each other. In an alternate embodiment, biasing of the die portions toward each other is achieved by surrounding the die portions with a layer of molded, resilient material such as urethane.

Abstract: A method and an apparatus for bending a corrugated plate about an axis extending transversally to the valleys and crests respectively, by applying said plate between two press beams the opposite faces of which are provided with mutually corresponding and also with the crests and valleys of the plate corresponding alternating raised portions and recesses, and by then bringing the press beams together so as to press inwardly directed ribs into the bottoms of the valleys and pressing outwardly directed bulges into the adjacent sidewalls of said valleys, in such a way that in the first stage, in which the plate as seen in the longitudinal direction of the crests and valleys is supported through a length which is a multiple of the width of the ribs to be formed, the bulges are pressed only, while the ribs are formed in the subsequent stage.

Abstract: A die set for deforming a ferrule or similar article comprises a first die member and a cooperable second die member movable relative to the first die member along a central axis. The first die member includes first and second die elements that are disposed on opposite sides of the central axis and that are movable laterally toward and away from each other. The movable first and second elements define an expandable and contractable die nest for receiving a ferrule therein. A spring is provided for normally urging the die elements toward each other. The transverse spacing between the first and second die elements is chosen to provide an interference fit with the ferrule such that upon insertion into the die nest the ferrule is resiliently retained therein. The second die member has an anvil portion for entering into the die nest and deforming the ferrule resiliently held therein. Release of the ferrule after deformation is effected by sliding the ferrule out from the die nest.

Abstract: A bending apparatus for bending individual sheet and strip blanks and having a bending punch curved to a radius less than the desired bending radius. Tip-supports are arranged at either side of the punch and are pivotable in the bending plane. Each support has a supporting pad for holding the blank and the pivotal articulations of the supports are arranged beneath the pads and spaced horizontally from the edges of the pads facing the punch.

Abstract: When bend working a metallic material using a suitable counterpressure against the material concurrently with the application of the bending force, and using a pair of dies having the distance therebetween controlled to be 3.5 to 6 times the thickness of the material, very precise bending deformation region can be easily and stably obtained without any defects, such as camber, looseness, fin, cracks or breaks.