Abstract: A flange sleeve comprising at lest one flange formed thereon, having no gap at the joint or having a controllably adjusted width of the gap at the joint. The flange has two crowding recesses at least in the metal coating thereof in at least two points distributed over the flange in the direction of the periphery. According to the method for producing the flange sleeves, the edge of the flange is bent. At least two crowding recesses in at least two points distributed over the flange in the direction of the periphery are made at least in the metal coating thereof, the recesses preferably being made by bending the edge of the sleeve. The invention also relates to a bending tool and a bending device.

Abstract: A method of progressive die stamping manufacturing a biopsy forceps jaw comprising the steps of cutting a sheet of metal into a strip. The strip of metal may then be punched with a series of guide holes. A shape larger than a pattern of the biopsy forceps jaw may then be defined in the strip of metal. An actuating hole may be punched into the shape. A concave shaped cup portion of the biopsy forceps jaw may be drawn. The pattern of the biopsy forceps jaw may then be cut to expose a cutting edge and exposed edges of the pattern. The cutting edge can be coined to provide a hardened, sharp, cutting edge. The exposed edges may be chamfered and then the pattern may be folded and shaped to form a biopsy forceps jaw cup and an arm positioned relative to the biopsy forceps jaw cup. A pivot hole may then be punched into the arm. The biopsy forceps jaw may then go through a calibration so that the cutting edge is in a plane perpendicular to a plane of the arm. The jaw cup may then be cut off of the strip of metal.

Abstract: A single sheet of a metal member is pressed to form an integrally molded structure of a front, a side, and a top of a door body without any joint. In addition, the front of the door body and a concave for displaying sample products or the like are integrally produced by molding. By virtue of this constitution, a door device for a vending machine can be realized which can be easily produced and possesses excellent appearance and strength.

Abstract: A method of preparing a sheet of material for bending along a bend line comprising the step of forming of at least one displacement in the thickness direction of the sheet of material with a portion of the periphery of the displacement closest to the bend line providing an edge and opposed face configured in position to produce edge-to-face engagement of the sheet on opposite sides of the periphery during bending. The forming step is preferably accomplished using one of a stamping process, a punching process, a roll-forming process and an embossing process. A sheet of material suitable for bending using the process also is disclosed, as are the use of coatings, shin guards and displacing the area of the sheet between bending inducing slits.

Abstract: A process for designing and manufacturing precision-folded, high strength, fatigue-resistant structures and a sheet therefore. The techniques include methods for precision bending of a sheet of material (41, 241, 341, 441, 541) along a bend line (45, 245, 345, 445,543) and a sheet of material formed with bending strap-defining structures, such as slits or grooves (43, 243, 343, 443, 542), are disclosed. Methods include steps of designing and then separately forming longitudinally extending slits or grooves (43, 243, 343, 443, 542) through the sheet of material in axially spaced relation to produce precise bending of the sheet (41, 241, 341, 441,541) when bent along the bend line (45, 245, 345, 445, 543). The bending straps have a configuration and orientation which increases their strength and fatigue resistance, and most preferably slits or arcs are used which causes edges (257, 457) to be engaged and supported on faces (255, 455) of the sheet material on opposite sides of the slits or arcs.

Abstract: A method for forming a base plate in which the base plate is stamped out of a sheet of metal. One of a relief surface and a boss are formed in the base plate by press working the base plate.

Abstract: A vehicular body panel or component part having a reinforcing backing plate reconciled or joined to a part of a blank material at a position wherein a bending formation is implemented. The backing plate has one or more apertures formed in at least one lateral row at a location equivalent to the position of the bending formation. When forming the blank material and the backing plate concurrently by a bending operation, the backing plate becomes intimately associated with the blank sheet to avoid the backing plate from locally separating from the blank material and from forming a gap relative thereto, with a resultant improved product quality.

Abstract: A reverse input blocking clutch comprises, as main elements, an input member, an output member, a stationary member for constraining the revolutions, locking means, lock release means and torque transmission means. By forming the input member, the output member, the stationary member and a fixed side plate from metal plates such as press worked steel plates, a compact, lightweight and low cost reverse input blocking clutch is provided. Reverse input torque from the output member is locked in both the forward and reverse rotational directions relative to the stationary member, by rollers which function as the locking means. Input torque from the input member in both the forward and reverse rotational directions is transmitted to the output member via apertures 1d and protrusions which function as the torque transmission means.

Abstract: A method of thermomechanically forming an aluminide part of a workpiece resistively heats at least a portion of the aluminide part, plastically deforms the heated portion of the aluminide part to a predetermined shape by applying pressure to the aluminide part positioned in a shaping member, and cools the aluminide part while applying pressure to maintain the aluminide part in the predetermined shape. The shaping member is movable mounted on a support base and a source of electricity provides an electrical current passing through the aluminide part for resistive heating of the part. The aluminide part can be a heater blade array for an electrically heated cigarette smoking system.

Abstract: An inexpensive method of rapidly fabricating reactive metal (Zn, Al, Al-alloy, etc.) microscale structures including high-aspect-ratio microscale structures is disclosed. A high precision process uses conformal bond inhibitor coating and high temperature compression molding techniques to produce high quality, high aspect ratio metal structures. In one embodiment, following fabrication of an initial metallic microscale mold insert, an adhesion-promoting metal precursor layer and a ceramic bond inhibitor coating are conformally deposited onto the microscale mold insert. The microscale mold insert and a preselected reactive metal are then heated to an optimum temperature and compressed together. The mold insert is then extracted from the molded metal to produce a reverse image of the mold insert.

Abstract: A curvature forming device has an upper member and a lower member. A clamping member is mounted on a spring within a recess in the upper member. An elongate deforming member is fixedly mounted in the same recess. The deforming member protrudes out of the recess more at one end than at the other. The upper member is pressed down against a flat anvil or die of a lower member, with a metal strip between them. The clamping member clamps the strip, whilst the deforming member deforms a small length of it. The upper member is raised and the strip moved forward a little bit. The upper member is then brought down again to clamp and deform the adjacent small length. Each deformed portion is generally fan shaped. These build up to produce a curve in the strip.

Abstract: A method for processing a film. The method impressing the whole surface or a selected surface of the film to form protuberant structures on the film by using a transfer and an impresser which has grain projections formed thereon, wherein the protuberant structures have a protuberant shape with an opening hole on the tip or without an opening hole on the tip.

Abstract: A method, machine system and thread cutting device for producing a threaded projection on a plate-shaped workpiece and in particular on a sheet-metal workpiece. A workpiece lug (2) is cut with a threaded contour in the principal plane of the workpiece and at least a section of the workpiece lug (2) featuring at least one threaded contour (5, 6) is permanently bent in the form of a threaded projection extending at the desired angle relative to the principal plane of the workpiece. A machine system (9) for implementing the method encompasses a cutting device for the relief cutting of workpiece lugs (2) as well as a thread cutting device. Also included is a bending device (15) by means of which at least a section of the workpiece lug (2) provided with at least one threaded contour (5, 6) can be permanently bent relative to the principal plane of the workpiece. A thread cutting device of the machine system (9) is appropriately configured for that purpose.

Abstract: A carrier C is integrally formed of a pair of flanges opposed to each other and designed to rotatably support rotating bodies therebetween and a plurality of joints for connecting the flanges. A groove is formed on the border between the flanges and the joints, and openings are made among the joints. Engagement holes for rotatably supporting rotational shafts of rotating bodies are made in the flanges.

Abstract: Small sheet metal reinforcement pieces are co-formed with a larger sheet metal part during a hot stretch forming against a heated forming tool surface. Locator holes are made in blanks for the reinforcing pieces so they can be precisely located on locator pins in the forming surface where the reinforcing pieces are ultimately to be attached to the formed sheet part. A preheated blank of the larger part is stretched against the trapped reinforcement blanks and both the part and reinforcing pieces are shaped against the hot tool. The part and reinforcing pieces are removed and cooled, and the closely fitting reinforcing pieces attached to the part at a suitable later time.

Abstract: A scheme for electromagnetic formation of fuel cell plates is provided. In accordance with one embodiment of the present invention, a method of forming a flow field plate is provided where an electromagnetic actuator is arranged opposite a profiled surface of a die portion. The profiled surface of the die portion is configured to at least partially define a network of flow field plate flow passages. The electromagnetic actuator is configured to generate a magnetic field upon activation and a sheet of material is positioned between the electromagnetic actuator and the profiled die surface. The sheet of material is characterized by an electrical conductivity sufficient to yield a repulsive electromagnetic force between the actuator and the sheet upon activation of the actuator. The passages are formed by driving the electromagnetic actuator such that the repulsive force is of sufficient intensity to deform the sheet against the profiled die surface.

Abstract: A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slant die surfaces for canceling elastic recovering generated at the workpiece when the workpiece is removed from the first die set. At the second step, a row of rack teeth is press-formed on the flat bottom portion of the workpiece formed in the first step. The die set used at the second step is provided with a recess for releasing surplus workpiece material within the die clearance at a stroke end of the pressworking. At the third step, each of a pair of legs of the workpiece is bent in a semi-circular shape so as to be butted to each other. At this time, a mandrel is inserted between the legs of the workpiece.

Abstract: A portable metal stud punching system has an alignment frame with an infeed alignment port in a first side and an outfeed alignment port in an opposite side. There is a punch and die positioned within the alignment frame. A length of metal stud is inserted through the infeed alignment port with one vertical side of the metal stud disposed between the punch and the die. A first hydraulic unit is attached to the punch and moves a first direction thereby inserting the punch into the die and punching a tab out of the vertical side of the metal stud. A second hydraulic unit moves the punch assembly in a direction perpendicular to the first direction of the first hydraulic unit. After the tab has been punched, the second hydraulic unit advances the metal stud by sliding the punch assembly a distance equal to the desired space between tabs. The punch is retracted by the first hydraulic unit and the punch assembly is returned to its original position by the second hydraulic unit.

Abstract: A hex nut formed from cutting and deforming a rigid planar material and having an integral attachment surface continuous with the deformable planar material allows attachment of the hex nut to any suitable surface. A rigid planar material such as a piece of flat metal is cut according to a particular pattern. The particular pattern includes each of the sides of the hex nut and one or more attachment surfaces as a continuous shape. The flat metal is then deformed, or bent, along certain lines to form a hex nut, or other polygonal shaped object. The attachment surface or surfaces, which extend from the sides of the hex nut, are then secured to a surface of a rotatable object, such as by adhesion or spot welding, or other suitable methods. In this manner, the hex nut can be engaged by a receptacle such as a wrench for rotating the hex nut and consequently, the object which is attached through the attachment surface.

Abstract: A method of applying a tensile or compressive force to a selected location of a work piece or surface without damaging the work piece or the surface and without leaving adhesive residue thereon includes providing a device including a body member and a force applying member movably connected with the body member, attaching the body member and/or the force applying member to the work piece and/or surface using a double-sided stretch releasing adhesive such that one end of the force applying member is adjacent the selected location, and moving the force applying member toward the work piece or surface to generate a compressive force, or moving the force applying member away from the work piece or surface to generate a tensile force.

Abstract: A steel sheet for a magnetic shield comprising less than 0.005% by weight of C and 0.0003 to 0.01% by weight of B, and having a thickness of 0.05 to 0.5 mm and an anhysteresis magnetic permeability of 7500 or more.

Abstract: A metallic plate is curved and folded by means of a press such that a curved portion is formed along an edge thereof, and two opposing straight portions are parallel, which are on two sides of the curved portion; the press includes first and second lower dies, and first and second hydraulic actuated upper dies; the first lower die has notches along it; the second lower die has a trench along it, whose cross-section is like an U; the second upper die has a pressing portion fitting the trench; the plate is first formed with two parallel folded portions, which each defines an obtuse angle, and together define an intermediate portion, with the notches and the first upper die; the width of the intermediate portion equals the arc length of the trench; next, the intermediate portion is sandwiched between and pressed with both the second dies to have the same curvature as the trench.

Abstract: A self-piercing element including a shank, a radial flange and a tubular barrel. The flange includes spaced concave surfaces and the annular bearing surface has an area at least four times the concave surfaces. The element is installed in a panel supported on a female die including a central die post, wherein the outer side wall is a frustoconical having an included angle between five and twelve degrees. During installation, the tubular barrel pierces an opening in the panel and the panel is drawn against the outer surface of the tubular barrel and the barrel is deformed into a U-shape. The flange is simultaneously received in the die cavity and the panel is incrementally deformed radially into the concave surfaces between the frustoconical side wall and the flange portion providing improved torque resistance.

Abstract: A process for producing bundles of laminated sheet metal for magnet cores, wherein laminations are punched free along two longitudinal edges of a sheet metal strip, at least two sheet metal laminations of a magnet core are of a different width extending from one longitudinal edge to the other, and several laminations, which rest against each other, are connected with each other to form the bundle. To simplify the tool control, the two longitudinal edges of a lamination are punched in edge cutting stations, which are separate from each other and are arranged offset in the feed direction of the sheet metal strip. The edge cutting stations for cutting the longitudinal edges have a cutting die and an associated bottom die. The cutting die, together with the bottom die, is displaced for creating different laminate widths.

Abstract: A process for designing and manufacturing precision-folded, high strength, fatigue-resistant structures and a sheet therefore. The techniques include methods for precision bending of a sheet of material (41, 241, 341, 441, 541) along a bend line (45, 245, 345, 445,543) and a sheet of material formed with bending strap-defining structures, such as slits or grooves (43, 243, 343, 443, 542), are disclosed. Methods include steps of designing and then separately forming longitudinally extending slits or grooves (43, 243, 343, 443, 542) through the sheet of material in axially spaced relation to produce precise bending of the sheet (41, 241, 341, 441, 541) when bent along the bend line (45, 245, 345, 445, 543). The bending straps have a configuration and orientation which increases their strength and fatigue resistance, and most preferably slits or arcs are used which causes edges (257, 457) to be engaged and supported on faces (255, 455) of the sheet material on opposite sides of the slits or arcs.

Abstract: A metal design panel is constituted by a surface decorative member and a thermoplastic resin member, which are firmly and integrally combined together. A plurality of through holes or dimples are formed at prescribed positions of a metal plate panel, which serves as a surface decorative member, in conformity with an outline of a product completed in manufacture. The metal plate panel is subjected to trimming to remove an unwanted peripheral portion, thus extracting a metal plate therefrom. The metal plate is arranged in a metal mold, into which a melted thermoplastic resin is injected to form a resin layer, which is firmly combined with the metal plate. Alternatively, a core member is formed and extracted from the metal plate panel and is combined with a resin layer upon injection molding.

Abstract: An easy manufacturing method of a slip stopper, and apparatus therefor, that has a great slip stopping effect and can be used for a location where a problem occurs if a though hole is opened therein. After a protruding portion is formed on a steel plate, by using a first punching die unit, so as to protrude from the upper surface in a plate thickness direction, a concave portion and drain channels are formed in the protruding portion by shear planes that extend substantially perpendicular to the steel plate upper surface and have been half-blanked so as not to open a through hole in the steel plate by using a second punching die unit.

Abstract: Method and apparatus for making a rotary die blade from a straight blade blank to be conformable to the contour of the rotary die block include inserting a blade blank between a first press face of a first presser and a second press face of a second presser; and compressing the blade blank by urging either of the first press face or the second press face to the other, thereby elongating the blade blank along its length; wherein the compressive force is differentiated such that a stronger compressive force is applied to the peripheral portion of the blade blank than the inner portion thereof.

Abstract: A method of forming a tubular workpiece which consists in pre-bending a metal plate along at least two longitudinal lines of bend (12–13) then in bending the plate along at least one of the lines of bend (12–13) using a bending member (103–104) that exerts an external clamping force (F7, F8) along a part (23, 24) of the plate towards the at least one of the lines of bend (12, 13). Thereby preventing any sliding of part (23, 24) of the plate along the bending member (103–104) as the bending member bends the part. The bending member is articulated about a virtual geometrical axis (a, c) located inside a tubular section of the workpiece.

Abstract: Methods for making trellis support structures for use in supporting vine borne crops are disclosed. The support structure includes a metallic support member that is bent into a modified U-shape and attached to a metallic cross arm using a process that produces consistent results. The combination of the U-shaped member and cross arm is then attached to a vertical support post at two different locations: one attachment at the center of the U-shaped member, and the other attachment at the center of the cross arm in an axial alignment with the support post. The structure is extremely strong, capable of supporting considerable weight, not likely to shift, and less prone to failure from fatigue. The support structure is produced by first bending the central section of a metallic support member into a U-shape, placing the bent member on a specially designed adjustable jig, and attaching a cross arm.

Abstract: Process for production of a metal reinforced sealing element, in which a metal carrier element is provided with several cutouts, the remaining material is subjected to a pressure forming process, with material deformation in the cutouts, to create a selectable contour of the carrier element, and subsequently a sealing profile is introduced in the formed contour.

Abstract: A longitudinally curved building panel, such as a wall or ceiling panel, comprising upstanding lateral side flanges having a plurality of stress-reduction apertures and a mounting bracket for suspending a pair of adjacent building panels.

Abstract: In a method of forming a protruded shaft on a metal base for an electronic memory device, the metal base is pressed down with a pressing tool from upper face side of the metal base placed on a die. The die is provided with a hole having a predetermined inner diameter and the wall material of the metal base is moved into the hole of the die to form a protruded shaft having a hollow part inside and the tip end closed.

Abstract: A well car for carrying shipping containers has a pair of end structures supported by rail car trucks, a pair of first and second spaced apart side beams extending between the end structures and a well defined therebetween. A container support cross member is mounted between the side sills in a position to support an end of a shipping container load carried within the well. The container support cross member may be a monolithic beam member with a attachment fitting formed at an end thereof. The attachment fitting is connectable to a side sill at a moment connection. The remaining end of the cross member is similarly configured and connected to the second side sill. Each end of the cross member has load bearing surface portions which may be used for supporting a corner of a shipping container. The moment connections permit a bending moment to be carried by the cross member between the first and second side sills.

Abstract: A method for precision bending of a sheet of material (41, 241, 341, 441) along a bend line (45, 245, 345, 445) and the resulting sheet are disclosed. A method includes a step of forming longitudinally extending slits (43, 243, 343, 443) through the sheet of material in axially spaced relation to produce precise bending of the sheet (41, 241, 341, 441) along the bend line (45, 245, 345, 445) with edges (257, 457) engaged and supported on faces (255, 455) of the sheet material on opposite sides of the slits. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line (45, 245, 345, 445). Several slit embodiments (43, 243, 343, 443) suitable for producing edge-to-face engagement support and precise bending are disclosed, as is the use of the slit sheets to enhance various fabrication techniques.

Abstract: The invention relates to workpiece control shaping of metal, preferably in the form of plates or bands, which metal workpiece has a high tensile limit, preferably about 1000 N/mm2, and is intended to be further shaped. Along predetermined folding notches or zones across the workpiece, the tensile limit of the material is reduced by heating to a tensile limit, which is substantially lower than that of adjacent base material, and when the workpiece has cooled it is subjected to subsequent bending, folding, or shaping operations to provide a two- or three-dimensional shape/extension of the workpiece along the treated folding notches or zones.

Abstract: A stainless steel separator having gas channels including grooves and projections for fuel cells. The separator has a composition including about 0.03 mass percent or less of carbon; about 0.03 mass percent or less of nitrogen, the total content of carbon and nitrogen being about 0.03 mass percent or less; about 16 mass percent to about 45 mass percent chromium; about 0.5 mass percent to about 3.0 mass percent molybdenum; and the balance being iron and incidental impurities. The separator has a contact resistance of about 100 m&OHgr;·cm2 or less. Preferably, the projections have an arithmetic average surface roughness Ra in the range of about 0.01 to about 1.0 &mgr;m and a maximum height Ry in the range of about 0.01 to about 20 &mgr;m. The stainless steel separator preferably further includes about 0.001 to about 0.1 mass percent silver. A fuel cell including this separator exhibits a stable output voltage for a long period of time.

Abstract: A method for producing bent spring rails from an endless spring band. The method is characterized by the steps of continuous bending of a section of spring band; cutting the bent section of spring band into a spring rail; discontinuous reverse bending to reduce the internal stresses of the bent, subjecting the cut-to-length spring rail to at least one reverse bending force; and/or heat-treating the cut-to-length spring rail, the heat treatment being a low-temperature treatment.

Abstract: A plate member (10) is mounted on a supporting frame (11). The periphery of the plate member (10) is firmly secured by a clamp (12) and a concave die-shaped lower pushing member (13) is caused to rise from below. The lower pushing member (13) is provided with a forming concave area (15) and a forming convex area (16). Disposed above the plate member (10) is a bar-shaped upper pushing member (20) which is lowered to push against the plate member (10). In such a condition, the plate member (10) is caused to rise together with the lower pushing member (13) and move in the directions of X and Y to form convex areas (17) and (18) within the forming concave area (15) and the forming convex area (16). The upper pushing member (20) is provided with a main body (21) of high rigidity and a flexible member (22).

Abstract: A method for the manufacturing of a plate (2) of metal or of a ceramic material, the plate having one or more fields (3) which occupy the major part of the surface of the plate and which on at least one side of the plate is high relief patterned such that the plate on said at least one side within the area of said field or fields has reliefs with high projections and deep valleys (9) or recesses (8) alternatingly, and between the sides a thin web (10), said high relief patterned field or fields being at least partly bordered by broad edge portions (4) which have a thickness larger than the mean thickness of the plate within the region of said high relief patterned field or fields. In a preparatory step, an intermediate product (1) is manufactured. This intermediate product includes at least a first portion (11) which shall form said high relief patterned field(s), which however is/are not yet high relief patterned but contain(s) an adequate quantity of material.

Abstract: A method of preparing a sheet of material for bending along a bend line comprising the step of forming of at least one displacement in the thickness direction of the sheet of material with a portion of the periphery of the displacement closest to the bend line providing an edge and opposed face configured in position to produce edge-to-face engagement of the sheet on opposite sides of the periphery during bending. The forming step is preferably accomplished using one of a stamping process, a punching process, a roll-forming process and an embossing process. A sheet of material suitable for bending using the process also is disclosed, as are the use of coatings, shin guards and displacing the area of the sheet between bending inducing slits.

Abstract: A method, machine system and thread cutting device for producing a threaded projection on a plate-shaped workpiece and in particular on a sheet-metal workpiece. A workpiece lug (2) is cut with a threaded contour in the principal plane of the workpiece and at least a section of the workpiece lug (2) featuring at least one threaded contour (5, 6) is permanently bent in the form of a threaded projection extending at the desired angle relative to the principal plane of the workpiece. A machine system (9) for implementing the method encompasses a cutting device for the relief cutting of workpiece lugs (2) as well as a thread cutting device. Also included is a bending device (15) by means of which at least a section of the workpiece lug (2) provided with at least one threaded contour (5, 6) can be permanently bent relative to the principal plane of the workpiece. A thread cutting device of the machine system (9) is appropriately configured for that purpose.

Abstract: An improved method of forming a panel out of a workpiece, the panel being substantially free of ripples and free of ruptures, includes forming a number of smooth bulges in the workpiece in order to effectively spread a quantity of excess material that results from forming a number of desirable features into the workpiece by taking up in the bulges an amount of material. The quantity, dimensions, locations, orientations, shapes, and configurations of the bulges with respect to the features are determined by an iterative process that examines the degree to which the excess material resulting from formation of the features is effectively spread about the panel. Effective material spreading can be characterized by at least one of reduced thickening of the workpiece, reduced amplitude of ripples in the workpiece, and increased period of the ripples. An improved panel formed according to the aforementioned process is also disclosed.

Abstract: The invention teaches the nesting and spacing of electrowon metal units via an electrowon metal sheet having thereon a spacing feature. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: In forming a secondary form portion having a three-dimensional shape to a part of a primary form portion having a two-dimensional curved plane, a work 240 having a curved plane corresponding to the shape of the primary form portion is prepared, and only the secondary form portion is created by incremental forming.

Abstract: The invention is a machine, machine system, and method of using a machine that alters metal plates to enable rigid stacking of the metal plates. In a preferred embodiment, the machine system includes a machine cabinet, a first altering system secured in the machine cabinet and configured to enable the machine to produce a divot or other indention in a metal plate, and a second altering system secured in the machine cabinet, the second altering system being configured to interact with the first altering system to change the shape of a metal plate, such as by bending a corner.

Abstract: A header for use in heat exchanger includes a base wall (20) with a plurality of tube insertion apertures (23), an opposite wall (30) opposed to the base wall (20), a pair of side walls (40a and 40b) disposed at both lateral sides of the base wall (20) and the opposite wall (30) and connecting the lateral sides and are inforcing walls (50a and 50b) disposed betwwen the base wall (20) and the opposite wall (30) along a longitudinal direction thereof and connecting the base wall (20) with the opposite wall (30). The side walls (40a and 40b) are integrally formed at both lateral sides of the base wall (20) be bending processing. A first half (30a) of the opposite wall (30) is integrally formed at a side of one of the side walls (40a) by bending processing, and a second half (30b) of the opposite wall (30) is integrally formed at a side of the other of the side walls (40b) by bending processing.

Abstract: A method for manufacturing a heat transfer member comprises the step of subjecting a material to be worked, which is made of a metallic thin sheet, to a press forming utilizing a press-forming device to form a heat transfer member for a heat exchanger. The heat transfer member has on at least one portion thereof a heat transfer face that has opposite surfaces, which are to be come into contact with heat exchange fluids, respectively. The press-forming device comprises a pair of main molds for forming the heat transfer face on the material, which is to be conveyed in a single feeding direction, and two pairs of first auxiliary molds, which are disposed on upstream and downstream sides of the pair of main molds in the feeding direction of the material, so as to be exchangeable.

Abstract: A sheet metal profile support (10) for automotive construction, such as a cross member, rocker panel, or frame support is disclosed, with a U-shaped, parabolic, or horseshoe-shaped profile cross section (12), in which, in at least one section (14) of the two legs (16, 18) of the profile, a first and second sheet metal layer (20, 22) rest flush against each other as a sheet doubling and in the region of the free ends of the legs (16, 18), the sheet metal layers (20, 22) are connected to each other in one piece by means of a beaded edge (32) that has a hollow chamber (34).

Abstract: Metal sheets, and in particular, metal sheets for roofing of the kind having upstanding flat edges ending with beads, are bent by rolling the flat edges such that they become gradually thinner towards the beads. The sheets will also be bent if the beads are not rolled.