Abstract: An apparatus for forming and sealing a duct member for use in an air handling system. At least one work station accommodates a work piece, which is generally a cylindrical tube.

Abstract: A method containing the steps of: providing an inner structural part blank having a L-shape and an outer structural part blank having a L-shape, the inner and outer structural part blanks being substantially planar; hot stamping the inner structural part blank to form an inner automotive structural part having an inner lowerside sill part and an inner lower front pillar part made of a single part with the inner lowerside sill part; hot stamping the outer structural part blank to form an outer automotive structural part having an outer lowerside sill part and an outer lower front pillar part made of a single part with the outer lowerside sill part; and assembling the inner automotive structural part and the outer automotive structural part to form the automotive structural part.

Abstract: An automated method and machine for fabricating metal fence pickets in a single operation includes forming material, typically metal strip into multiple pickets with various shapes. The machine includes automated programmable machine for inserting raw material to form the metal fence pickets, automated programmable machine for embossing the metal fence pickets, automated programmable conveyor machine for conveying the raw material, automated programmable machine for cutting, punching holes, and folding the raw material to form the metal fence pickets.

Abstract: To suppress the shape defect at a bite end part of a material to be rolled at a bending rolling stage of a rough rolling step to achieve improvements in productivity such as an improvement in yields and a decrease in crop in production of a steel sheet pile.

Abstract: A method for producing a metal sheet with raised lines uses a rolling mill including roll stands. In a preparing step, a grooved roll is prepared, the grooved roll including grooves. In a choosing step, a stand at least one stage before the last stand is chosen. In an incorporating step, the grooved roll is incorporated in as an upper roll of the chosen, specified stand. In a forming step, a workpiece is formed into a metal sheet with raised lines formed corresponding to the respective grooves. In the forming step, a maximum rolling reduction achieved by rolls of the specified stand is set to a provisional value that is lower than a required value. After the leading edge of the workpiece reaches the stand next to the specified stand, the maximum rolling reduction of the specified stand is changed to the required value.

Abstract: A method relates to producing a sheet metal profile, in particular consisting of steel, for a drawer pull-out guide having at least one web projecting laterally, in particular perpendicularly, from a flat surface of the sheet metal profile and extending in the longitudinal direction of the sheet metal profile. In a first method step, from at least one flat surface of a sheet metal billet, there is extruded at least one web projecting laterally, in particular perpendicularly, and extending in the longitudinal direction of the sheet metal billet. In at least one further method step, preferably in 10 to 15 further method steps, the at least one web is squeezed together, i.e. is reduced in width and increased in height. The invention further relates to a sheet metal profile produced in this manner and to a drawer pull-out guide that comprises such a profile.

Abstract: A device for regulating a residual stress is comprised of: input means; a residual stress database; a process condition database; first searching means for searching a residual stress (?0) from the residual stress database; a calculator for calculating a first bending moment (Mrs) in a ridge line originated from the residual stress, and a second bending moment (Mz) in the ridge line originated from bending to obtain a total bending moment (Mrs?Mz) and calculating a camber curvature (?z) of the workpiece originated from the total bending moment (Mrs?Mz); comparing a difference (|?z??z0|) between the camber curvature (?z) and a target value (?z0) with a tolerable value (?); second searching means for searching a process condition satisfying a tolerable condition (|?z??z0|??) from the process condition database when (|?z??z0|>?); and regulating means for regulating a residual stress.

Abstract: A spacer for a sealed unit is formed of a stretched elongate strip of material, such as metal. The elongate strip is longitudinally stretched, causing a reduction in the thickness of the material. Stretching is performed by applying a tension across a segment of an elongate strip. The tension can be applied to the elongate strip by passing the elongate strip through at least two spaced sets of rollers. A first set of rollers operating at a first speed engages with the elongate strip and a second set of rollers operating at a second speed applies a tension to the elongate strip to cause stretching of the material. Corrugated rollers can also be used to form the material into an undulating shape.

Abstract: A method for producing a profile from a sheet-metal strip is disclosed. The sheet-metal strip is bent at least twice during a first stage, where, as viewed in the cross-section of the sheet-metal strip, a center section as well as two flank sections are formed, which project angularly from two opposing end regions of the center section. During a second stage following the first stage, the center section is compressed by two complementary roller arrangements which engage on the two opposing end regions of the center section, and the sheet-metal strip is thereby locally thickened.

Abstract: A panel crimping apparatus comprises a frame, a first crimping roller supported by the frame, the first crimping roller comprising a first shaft, a plurality of first crimping blades, and a first drive gear attached to the first shaft, and a second crimping roller supported by the frame, the second crimping roller comprising a second shaft, a plurality of second crimping blades, and a second drive gear attached to the second shaft. A distance between the first and second shafts of the first and second crimping rollers is adjustable. The apparatus comprises various links, gears and a control linkage configured to maintain timing between the first and second crimping rollers during driving of the first and second crimping rollers over an adjustable range of distance therebetween.

Abstract: A programmable machine for roll forming metal decoiled from a roll of metal and cutting the panels at a desired angle is provided. The roll former can form male and female edges on the metal which are necessary for a metal roof. The machine has a notcher to notch the metal where it is to be cut in order to avoid difficulty in cutting through a male or female edge. An exit cutter is provided after the metal has been roll formed. The angle at which the exit cutter can cut is also calculated in the programmable computer. A measuring device for measuring the roof and transferring the data to the programmable machine for cutting the panels completes a system for automatically and accurately cutting the panels for the roof.

Abstract: A flanged duct blank has a male part defined by lead notches formed at each side of a leading end and has a female part defined by trail notches formed at each side of a trailing end. The male part includes a lock tab. The female part includes a leg part and a Z-bend. The Z-bend includes a leg part and a gap. The duct blank is repeatedly clamped and bent by a pivoting wiper to form a duct portion. The pivoting wiper includes a clench tool that has a retractable rib and a retractable roller. With the lock tab inserted into the Z-bend and the retractable rib engaged with the Z-bend, the retractable roller clenches the leg part over the lock tab to lock the male and female parts together in a duct seam.

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. Metal sheets having upstanding sides, and ends bent towards or away from the upstanding sides, are also bent by rolling the upstanding sides gradually thinner towards or away from the bent ends for forming beams for automotive components as well as other products.

Abstract: A vehicle seat back having a vehicle seat back frame and a method of producing the seat back frame can be used in multiple vehicles and includes a stamped first vertical frame member having a varying depth u-shaped and a roll formed second frame member having a constant depth u-shaped cross section and the first frame member is a common part used in multiple vehicles having a substantially constant height vehicle seat backs and the second frame member is cut to length used in multiple vehicles having different width vehicle seat backs.

Abstract: Profiles (50) are formed in a production line with a cross-section that varies along their length from a plane metal strip (10) that is unwound from a tape reel (9). Edge cutters (14) and roll-forming units (17-24) are displaceable individually sideways relative to the strip, and are individually controlled. The formed profile is curved in a curving station integrated into the production line and having roller pairs (82, 84; 83, 85) that can be controlled to roll sides of the profile (50) such that they become thinner so that the profile is curved or twisted as it is formed. The roller pairs and the sideways displacement and the angular motion of the roll-forming units are controlled so that the roller pairs follow the sides and such that a line (II) between the axles of one roller pair is held perpendicular to the surface being rolled.

Abstract: In a grain bin floor panel having first and second floor surface extending outwardly from a central support leg to respective first and second side support legs, the central support leg includes first and second upright portions and a lower portion connected between respective lower ends of the first and second upright portion. The first and second upright portions are connected to respective ones of the first and second floor surfaces at the upper ends of the upright portions and are spaced apart from one another at respective lower ends. The lower portion is generally concave such that the lower ends of the first and second upright portions together with the lower portion forms a concave quadrilateral.

Abstract: This invention pertains to a process for producing shaped components from high-strength and ultra high-strength steels with tensile strengths >780 MPa, wherein a steel sheet-metal strip is fed to a roll-forming installation and in the roll-forming installation is passed through roll stands and deformed by means of deformation rollers acting on the steel sheet, and wherein to avoid hydrogen embrittlement in plastically deformed regions of the deformed steel sheet-metal strip compressive stresses are introduced by stamping and/or upset-forging and/or overbending and bending-back or by machining the strip edges.

Abstract: A duct making apparatus bends a metal web to form a duct blank having a lock tab at a forward end and having a Z-fold at a rearward end. Prior to shearing off the duct blank from the metal web, the apparatus bends the duct blank to insert the lock tab into the Z-fold, and further bends the Z-fold to form a clinch tab holding the lock tab into the Z-fold. After shearing off the duct blank from the metal web, the apparatus clinches the clinch tab over the lock tab to form a completed duct blank.

Abstract: A cold rolling method for manufacturing a profile (16) from a one-piece rolling stock in form of initial material (6; 56) with a plurality of rolls (26, 36, 46; 6, 76, 86) each having a deforming region (28, 38, 48; 68, 78, 88) for deforming the initial material (6; 56) includes bending the initial material (6; 56) with formation at least one folded section (8) extending in a rolling direction of the initial material (6; 56), and deforming the initial material (6; 56) in its width direction with reduction of its thickness at least in one region.

Abstract: A high-strength beam includes first and second sections bent in opposite directions as part of a roll-forming process. A frame includes side frame members incorporating the double-bent beam and at least one energy management tube attached to the beam. In one form, the beam is tubular and has a cross-sectional dimension of greater than 25 mm and a material strength of at least about 60 KSI tensile strength. A roll form apparatus includes a roll former device and a sweep station in-line with the roll former device for sweeping the continuous beam in first and second opposing directions. Also, a method of roll-forming comprises steps of: roll-forming a sheet of material into a continuous beam and sweeping first and second sections of the beam in opposite directions.

Abstract: A roller forming device and method for forming a material provided with geometric elements, in particular holes, is disclosed. The device has at least one forming roller and at least one counter roller, wherein a roll gap is configured between the forming roller and the counter roller for carrying through the material. The forming roller has a molding structure on its cylindrical surface, which molds the material when the material runs through the roll gap. The forming roller has carrier elements for an engagement with the geometric elements of the material running through the roll gap.

Abstract: A roll forming system and a roll forming method are disclosed. The roll forming system according to an exemplary embodiment of the present invention includes a bending unit provided with synchronizing means moving a synchronizing table in keeping pace with a forming speed of a shaped beam along a process line, clamping means clamping both sides of the shaped beam, position conversion means converting a position of the shaped beam between a cutting position and a bending position, cutting means cutting one side of the shaped beam by a cutting wheel, and a bending means stretch-bending the shaped beam to have a predetermined curvature.

Abstract: A bumper cross member for a motor vehicle includes, but is not limited to a first chamber located in driving direction at the front and a second chamber located in driving direction behind the first chamber. The first and the second chamber are embodied as hollow sheet metal profiles and the first chamber has a higher deformability than the second chamber.

Abstract: A pass through inline seam rollformer having a head assembly and a cradle moveably mounted with a frame. The head assembly laterally moves upon the cradle whereby a seam may be formed upon a sheet material via tooling mounted upon the head assembly. The cradle moves relative to said frame whereby the head assembly may be retracted from a pass line of the sheet material and the sheet material may move through the apparatus without interference from the head assembly. For the preferred embodiment, the tooling utilizes one or more rollers having circumferential grooves or profiles which allow a male or a female lock seam to be formed as the head assembly moves over a leading or trailing edge of the sheet material without the need to transfer the sheet material 90 degrees or remove the sheet material from a production line.

Abstract: A method for forming a bumper beam includes providing an elongated piece of sheet metal having opposing end portions and an intermediate portion, bending the end portions with respect to the intermediate portion until the end portions are substantially perpendicular to the intermediate portion, bending a central section of the intermediate portion to form a protruding bulge in the intermediate portion after the bending the end portions, and bending side sections of the intermediate portion to move ends of the end portions adjacent to one another and adjacent to the protruding bulge after the bending the central section to from the bumper beam. The end portions form front walls of the bumper beam, the protruding bulge forms inner side walls and a web portion of the bumper beam, and the side sections form outer side walls and rear walls of the bumper beam.

Abstract: Methods and apparatus of forming stiffening structures in a material are disclosed. In an example method, a first bend line is formed in the material and a portion of the material is drawn toward the first bend line to form an intermediate stiffening structure. A second bend line is then formed adjacent and parallel to the first bend line so that the intermediate stiffening structure is located between the first and second bend lines. A plurality of stiffening structures is then formed in the intermediate stiffening structure without substantially stretching the material.

Abstract: The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device, so that the sheet tape is formed into a roller-formed profiled strand. Thereafter, the coated sheet steel is brought, at least in parts and with the admission of atmospheric oxygen, to a temperature required for hardening and is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating.

Abstract: In a water diversion system, in a preferred embodiment, a first fold of a deflector is disposed into a first hanger cavity and a second deflector fold is disposed into a second hanger cavity. The first fold of the deflector cooperates with the first cavity of the hanger to allow a resistance hinge-like action of the deflector. The deflector may be lifted open by compression of a curve of the deflector to remove the second fold of the deflector from the second hanger cavity. Methods are provided in which, in a preferred embodiment, a deflector-forming machine is disposed above a trough-forming machine and the deflector-forming machine is moveable forward and backward relative to the trough-forming machine.

Abstract: A method of constructing a grain bin floor support system having a plurality of interconnected support members. The support members are constructed from a monolithic sheet of structural metal stamped and formed having upper and lower horizontal rails spanning across and integrally connected by a plurality of transverse support columns. The rails include a longitudinally extending center segment and a stabilizing portion adjacent each end thereof. The stabilizing portions are configured to be folded out in opposite directions forming a non-planar self-supporting structure.

Abstract: The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device. Thereafter, the coated sheet steel is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating. After sufficient heating the sheet is cooled, wherein the rate of cooling is set in such a way that hardening of the sheet alloy is achieved.

Abstract: Aluminum coils of pre-printed metal are pre-cut to lengths and angles to fit a wooden door jamb. Then, a rolling machine accepts a chosen width of sheet metal and rolls out a cladding strip. The strips require only a minimal manual bend of an end tab. The strips can be packaged in the wooden door jamb for field installation onto the wooden door jamb.

Abstract: A cold roll forming mill for the manufacture of hollow flange seam welded beams from a single strip of metal comprises a forming station (1), a seam guide and welding station (2) and a shaping station (3). Either or both of the forming and shaping stations (1,3) comprise independently supported side engaging roll combinations (7,12) adapted, in use, to roll either or both of opposite sides of the strip. Adjacent transverse pairs of side engaging roll (7,12) combinations are selectively movable relative to each other in a transverse direction perpendicular to a direction of travel of said strip through said mill. At least some of the side engaging roll combinations (7,12) are driven. Drive rolls (6) spaced within the forming and shaping stations (1,3) engage the strip between opposite edges thereof.

Abstract: A main beam fabrication procedure and system for making main beams for warehouse framework through feeding, auto-forwarding and flattening, punching, roller shape-forming, cutting-off and finished product collection steps, in which the punching machine comprises an upper mold holder, four upper punching dies arranged in two longitudinal rows on the bottom side of the upper mold holder and adjustable to change the transverse pitch between the two longitudinal rows of upper punching dies, a bottom mold holder, and four bottom punching dies arranged in two longitudinal rows on the top side of the bottom mold holder and adjustable to change the transverse pitch between the two longitudinal rows of bottom punching dies.

Abstract: An apparatus is disclosed for roll forming metal components including substantially channel-shaped members for use in a building structure. The apparatus includes a support frame assembly having front and rear portions. A mechanism is provided for selectively feeding at least one metal strip into the support frame assembly, the metal strip having a pair of side edges and a center web. A plurality of driver roll elements are mounted along the support frame assembly and are adapted to move the metal strip through the frame assembly. Finally, a plurality of spaced idler forming rolls are mounted for free rotation in pairs along the support frame assembly. The idler forming rolls are adapted to simultaneously air form the side edges of the metal strip into angularly extending side flanges by urging the side edges in opposing directions from the center web as the metal strip is moved along the frame assembly by the driver roll elements.

Abstract: Disclosed is a method of forming a heat exchanger turbulizer apparatus including a member having a longitudinal axis, a lateral width and a plurality of strips including first strips and second strips, each strip extending widthwise and being corrugated longitudinally so as to form a plurality of laterally spaced-apart sections connected to one another by bridges projecting from the sections in a common direction, the bridges of the first and second strips extending in the same direction and the corrugations of the second strips being offset laterally from the corrugations of the first strips. The method comprises: crimping longitudinally-corrugated strip material between first and second forming dies to form said apparatus, said dies being adapted such that substantially all lateral movement of strip material in crimping results from strip material being drawn laterally by material that has been displaced in a direction parallel to the direction of die movement.

Abstract: Profiles (50) are formed in a production line with a cross-section that varies along their length from a plane metal strip (10) that is unwound from a tape reel (9), whereby edge cutters (14) and a number of roll-forming units (17-24) are used where not only the edge cutters but also the roll-forming units can be displaced individually sideways relative to the strip. The edge cutters (14) and the roll-forming units (17-24) are individually controlled. The formed profile is curved in a curving station integrated into the line, which curving station comprises roller pairs (82, 84; 83, 85) that can be controlled to roll sides of the profile (50) such that they become thinner such that the profile is curved or twisted as it is formed.

Abstract: A cold roll forming mill for the manufacture of hollow flange seam welded beams from a single strip of metal comprises a forming station (1), a seam guide and welding station (2) and a shaping station (3). Either or both of the forming and shaping stations (1, 3) comprise independently supported side engaging roll combinations (7, 12) adapted, in use, to roll either or both of opposite sides of the strip. Adjacent transverse pairs of side engaging roll (7, 12) combinations are selectively movable relative to each other in a transverse direction perpendicular to a direction of travel of said strip through said mill. At least some of the side engaging roll combinations (7, 12) are driven. Drive rolls (6) spaced within the forming and shaping stations (1, 3) engage the strip between opposite edges thereof.

Abstract: Method and Apparatus for fabricating a spacer frame for use in an insulating glass unit. A roll former bends a strip of material to form a spacer frame having side walls to which an adhesive is applied during fabrication of an insulated glass unit. Alternately a plastic frame is formed by extrusion. A notching apparatus forms notches at locations that extend into the side walls to weaken the side walls for bending of said elongated channel into a closed structure. A downstream workstation predisposes specified locations of the sidewalls to facilitate bending of the spacer frame. The workstation forces the specified locations of the sidewalls inwardly toward each other at the predetermined bend locations.

Abstract: Process for manufacture of self reinforced sheets or shape parts (9) by rolling at least one metal strip (1, 2), which during roller processing is guided through a gap formed between work rollers, wherein at least in one area of the metal sheet (2) through holes (7) are introduced and the area of the metal sheet with through holes (4, 6) is brought together with an area of the same metal sheet without through holes (5) or at least one further metal sheet without through holes (1) and rolled, so that a new metal strip (1, 2), sheet or shaped part (9) is formed, as well as a sheet or shaped part obtainable by this process, wherein the sheet or shape part is comprised of two metal parts (4, 6) joined by welding or adhering, wherein at least one metal part is provided with perforations (7), which correspond to the recesses of the self reinforced structure.

Abstract: A vehicle box assembly wherein a bed floor and the inner right and left side wall panels are defined by and assembled from two monolithic one-piece integrated side/floor panel members. The two panel members are preferably formed by roll forming a thin metal sheet so that only a single roll-formed panel configuration is required. Subsequent forming operations, such as punching or die forming, are carried out on the roll-formed configuration to create right and left panel members which are assembled to define the floor and opposed inner side panels of the box assembly.

Abstract: An apparatus includes a roll former for forming a continuous beam from sheet material, and a downstream former positioned in-line and downstream of the roll former. The downstream former includes a die-supporting sled temporarily movable with the beam, and includes a bottom die, side dies reciprocatingly movable inwardly to temporarily support sides of the beam, and a top die reciprocatingly movable to reform flanges on the beam against the side dies to reform portions of a section of the continuous beam. A related method is also shown.

Abstract: A forming apparatus (50) includes a roll former (51) operative to roll form a metal strip (100) to form a profiled metal section (10) of generally C section profile including a pan (12) and a pair of upstanding edge margins (14 and 16). The section profile incorporates a longitudinal precamber which is introduced by the forming apparatus by incorporating a prestretching apparatus (52) upstream from the roll former (51), and a bending apparatus (53) located downstream of the roll former (51). The prestretching apparatus differentially stretches the metal strip (100) in its longitudinal direction so as to form portions (101, 102), which are more elongated than a laterally adjacent portion (103) of the strip (100). The differential stretching compensates for longitudinal shortening of the metal strip in forming the profiled section in the roll former (51). The bending apparatus (53) uses a (3) point bending process and includes a reaction stage (60), a fulcrum stage (61), and an action stage (62).

Abstract: An agricultural harvesting machine that comprises a crop processing mechanism and an elevator assembly for conveying harvested crop material to the crop processing mechanism is provided. The elevator assembly comprises an elevator housing, an elevator mechanism mounted in the housing, at least two flexible endless members and a plurality of slats mounted transversely to the flexible members. The slats have an S-shaped cross section that provides additional strength to the slats while reducing the chance of damage to the crop conveyed by these slats.

Abstract: An auxiliary embosser for use with a mobile or stationary on or off-site roll forming apparatus which roll forms sheet material into objects such as a rain gutter or aluminum siding having complex cross section profiles. The auxiliary embosser includes a frame adapted to be aligned and attached adjacent to the apparatus in relation to a roll formed object discharge thereof. The frame includes closely spaced mating embossing rollers held for rotation in the frame about spaced rotational axes and aligned to receive one surface of a roll formed object discharging from the apparatus. The embossing rollers are formed having a profile of their mating surfaces configured to be substantially similar to a profile of the one surface of the object and further include a decorative design which is embossed into the one surface of the object while being moved through the embossing rollers as controlled by the apparatus.

Abstract: Disclosed is an U/Z-shaped steel bar manufacturing process, which includes the steps of (a) supplying a steel sheet material from a material rack to a flattening machine, (b) operating the flattening machine to flatten the steel sheet material and then delivering the steel sheet material to a punch press for punching, (c) operating the punch press to selectively drive the punch dies to punch the steel sheet material with punch holes subject to a predetermined punch pattern, (d) delivering the punched steel sheet material to a roll forming machine and then operating the roll forming machine to ram the punched steel sheet material into an U/Z-shaped steel bar, (e) operating a straightening machine to straighten the U/Z-shaped steel bar, and (f) operating a conveyer to carry the finished product backwards for packing and further delivery or storage.

Abstract: An encaustic metal tile fabrication equipment includes a roller unit operated to roll an encaustic metal sheet into a corrugated encaustic metal sheet, a shape forming mechanism having a first shape forming mold unit and a second shape forming mold unit and operated to process the corrugated encaustic metal sheet into an encaustic metal tile having a bend with a recessed portion, and a cutting unit operated to cut the finished encaustic metal tile to the desired size.

Abstract: A siding system includes panels having a facing element with a convex front face portion. A first connecting portion extending along an upper edge and a second connecting portion at a lower edge is adapted to engage the first connecting portion of an adjacent lower siding panel. Mounting holes at a top edge of the facing element provide for mounting the siding panel to a vertical surface. A support element, such as foam insulation attaches to a rear surface of the facing element. A machine for making the metal siding panels has a feeder and multiple roller sets. First ones of the rollers have a concave portion and complementary second ones of the rollers have a convex portion. The concave portion first roller set has a larger radius profile than the last roller set to roll form the siding from a coil of blank material. Bending rollers form the mounting structure of the panels. Embossing rollers forming an embossed pattern on the face of the panels.

Abstract: A roll bending die for bending metal into an arc with reinforcing ribs and tapered ends. The roll bending machine includes a body member being designed for being rotatably coupled to the roll bending machine whereby the body member selectively engages a pliable roller of the roll bending machine. The body member is designed for being rotated by the pliable roller when the pliable roller is rotated by the roll bending machine whereby the body member rolls the material into an arc when the material is placed between the body member and the pliable roller. The body member comprises a plurality of ridge portions outwardly extending from a perimeter face of the body member. The ridge portions are designed for pressing ribs into the material when the material is rolled between the body member and the pliable roller of the roll bending machine.

Abstract: The present invention enables to firmly assemble a steel-frame structure. To form a steel-frame structure or to join two steel members being reinforcing members thereof, a slip-proof surface having one or plural concentric higher parts and grooves is formed on the joined surface of one side or both sides of the steel members, and these two steel members are clamped by a connecting member that passes through connecting holes in the state where the first and the second slip-proof surfaces are mutually engaged or not engaged. Thus, joining force between the joined surfaces is increased.

Abstract: A metal material is rolled to form a strip plate material having a middle part and thinner thickness-deviation portions on both sides of the middle part. After that, this strip plate material is bent and deformed in its width direction by roll forming, thus forming a bent and deformed portion in the middle part. The processing method includes a rolling step and a roll forming step, which enables the metal material to be processed economically using relatively simple steps. No annealing step is included and therefore an excellent final product is obtained. Particularly, the rolling step and the roll forming step are carried out successively, so that the roll forming can be carried out with high efficiency using processing heat generated in the rolling step. The bent and deformed portion is thick and the thickness-deviation portions are thinner, which contributes to the reduction in weight of a final product while the same strength as that of a conventional product is maintained.