Abstract: Disclosed is a device for bending open, half-open, and closed hollow profiled members (11?). Said bending device operates with a central roller (3) that rests against the inner surface of the bent profiled member, a milling roller (4) which leans on the outer surface of the bend, and a bending roller (11) located at the discharge end of the profiled member. Said bending roller (11) acts upon the outer surface of the bend, counter to the supporting effect of a support roller (5, 6) that rests against the outer surface of the bend at the feeding end. In order to allow also thin-walled, sensitive profiled members to be shaped, additional milling rollers (12, 13) that act upon the top and bottom sidewall of the profiled member are disposed on a plane extending perpendicular to the bending plane in relation to the opposite central rollers and milling rollers (3, 4).

Abstract: The invention is a rotary draw bending machine and process for bending materials such as tubes or pipes into precise bends. A spindle holds a bending die, and a radial arm holds a counter-die. The spindle and arm are simultaneously rotated in opposite directions by a dual hydraulic drive controlled by an electro-hydraulic control system with foot pedal controls. The bend angle is preset by a protractor-like dial and limit switch mechanism. The radial arm has a slide track to align the counter-die with the bending die. The ratchet mechanism has teeth to allow incremental advancement of the counter-die when aligning it with its bending die to accurately set the gap between the dies. The machine is used with a wide variety of dies to bend a wide variety of workpiece diameters. The ratchet mechanism preferably includes a fine tuning device to provide an infinite range of alignment positions.

Abstract: A straightening rotor is provided with at least two freely positionable balancing means that are essentially arranged symmetrical to a central plane, axially relative to a rotational axis of the straightening rotor. This makes it possible to achieve higher speeds and/or a longer service life.

Abstract: Method and apparatus for forming conduit or pipe of various sizes into undulating, helical pipe by feeding a length of conduit at a controlled rate through a bending mechanism while also continuously rotating the pipe at a controlled rate so that bending occurs in multiple axis directions and the diameter of the helical path of the conduit centerline of the coil is less than the conduit diameter, the pitch is greater than the pipe diameter, and a straight open channel is retained through the pipe coil.

Abstract: A cold-formed, raised-center axle for a heavy-duty vehicle includes a central tube having a pair of ends, a pair of spindles attached to the central tube ends, and a wall thickness of from about 0.500 to about 0.625 inches. A hump is formed in the center portion of the tube and includes compressive residual stresses in its bottom portion when the axle is in an in-service position. A method for forming the raised-center axle includes the steps of providing a substantially straight axle, inserting the axle into a press, over-forming a hump in the axle in the direction such that camber is induced in the axle, and forming the axle in a second direction, thereby substantially removing the camber and replacing a detrimental residual stress state in the humped portion of the axle with a beneficial residual stress state.

Abstract: A tube spacer S formed by bending a wire, includes a plurality of projections 20 and a base-bending portion 21. Each of the projections 20 is inserted between tubes, and has a pair of extending portions 201 extend in X direction and a front-bending portion 202 for connecting both front ends of the pair of extending portions 201. The base-bending portion 21 connects both rear ends of the projections 20 so that the projections 20 are arranged at interval in Z direction. With this structure, manufacturing cost for the tube spacer S can be low, and the tubes can be stably supported.

Abstract: A flexible axle for motor vehicle has a cross-member (1) connecting two longitudinal arms (2), wherein said cross-member (1) has a closed cross-section, and said cross-member has, at least in a central zone, a substantially trapezoid cross-section (11).

Abstract: A method and a preprocessed tube for producing a tube with a bent progression or with a bend embodied as a transverse progression. For the bent position of the tube or for each fold of the transverse progression, two miter cuts are made into an essentially straight tube, thus creating two tube sections with miter cut surfaces extending along the cutting planes and a cutting wedge. The miter cuts are placed according to the invention such that the cutting planes intersect at a point located inside the tube wall, and at this point a bendable bar is left intact connecting the two tube sections. A folding of the miter cut surfaces of the two tube sections onto each other around the bar acting as a hinge then allows both tube sections to be welded together all around their miter cut surfaces. Preferably an additional centering aid in form of a protrusion and a form-fitting recess is provided in the two opposite miter cut surfaces.

Abstract: A small bend radius connector for a heater core is shown, wherein a first end of the connector has a rectangular cross section, a second end of the connector has a circular cross section, and wherein a size, a weight, and a cost of production of the connector are minimized.

Abstract: An elbow rotator apparatus for rotating an integrally formed section of an elbow workpiece includes a pair of gripping arms which are selectively positionable in a first position displaced from the elbow workpiece, and a second position in which the gripping arms are in contact with the integral section of the elbow workpiece. A rotary actuator is operatively connected to the gripping arms to selectively rotate the gripping arms by a predetermined amount when the gripping arms are in the second position.

Abstract: A three version precision degree pipe hand bender using stop members inserted into degree slots cut into a bender head outer periphery to signal pipe bend completion as the pipe being bent touches a stop member.

Abstract: A pipe bending system employing a sensing and indicating system that provides feedback to an operator regarding the position of components of the pipe bending system, such as the pin-up shoe and the stiffback. Apparatus for retrofitting a sensing and indicating system to existing pipe bending apparatus.

Abstract: A tube bending apparatus adapted for the noncircular bending of a tube includes a modified bend die, a modified wiper die, a translatable and pivotable element and an actuator. The bend die presents a noncircular bending profile having a linearly or nonlinearly increasing radius of curvature. The wiper die is configured to accommodate the maximum radius presented by the profile, and the element and actuator present an inclined rack and pinion configuration. The bend die presents an involute of a circle having a radius equal to the product of the radius of the pinion and the sine of the angle of inclination, so that the bend die engages the tube at a fixed point in space during bending.

Abstract: A method for bending a tube in a pre-selected geometry includes deriving at least one processing parameter from the geometry, applying a thermal source circumferentially to the tube to heat the tube along at least one circumferentially directed path in accordance with the parameter and actively cooling the tube to a pre-selected temperature. The applying and active cooling steps are alternately performed a number of times. A system for bending the tube includes a thermal source for heating at least one region along the path on the tube, a tube advancing module for advancing the tube, an active cooling module for cooling the tube to a pre-selected temperature, a processing module to derive at least one processing parameter from the geometry and a control module configured to control the thermal source and active cooling module in accordance with the parameter. The alternate heating and cooling are performed a number of times.

Abstract: The invention concerns methods and devices for bending a cylindrical tube or the like (1) so as to obtain two consecutive sections (2, 3) of said tube forming between them a non-null angle alpha. The method is essentially characterised in that it consists in producing, in the wall (4) of the tube (1), a wave (20) defined between two flanks (22, 23) forming between them a non-null angle beta substantially centred on the separation plane (21) between the two sections, then in producing a permanent plastic deformation of the wave (20) until the value of the angle between the two sections (2, 3) is obtained. The device enables to implement said method. The invention is useful in particular but not exclusively, for producing pipes for transporting fluids in motor vehicles or the like.

Abstract: A mandrel for bending which inhibits generation of irregularities on the inside of the bend is provided. The mandrel comprises a plurality of plugs in the form of discs and a through-hole is created substantially in the center of each plug. A flexible member is inserted through the through-holes of the respective plugs. One end of the flexible member is fixed to a shank so that the plugs are connected to the shank in series. Each plug is provided with a flat slant surface that descends from about the center of the plug toward the outer periphery of the plug. A lock hole is formed in parallel to the through hole in each plug and a flexible lock member, one end of which is fixed to the shank, is passed through the lock holes of the respective plugs.

Abstract: A bending apparatus which can bend pipes and obtain as small curvature as possible without flattening or buckling easily occurring in the bending region. The bending apparatus comprises a bending die for a pipe, a clamping die which rotates together with the bending die while clamping the pipe, a pressure die which hold down the pipe, and a metal core which is inserted into the pipe and maintains the shape of the bending region, wherein the metal core is a spherical metal core rotatably supported by an arch shaped arm on the leading end of a core holder.

Abstract: A method and apparatus for bending tubes particularly suited for bending thin-walled tubing into a tight radius bend. An external sleeve is used during the bending process which maintains the tube cross sectional area and tube wall thickness, thereby eliminating the need for a wiper die or an internal mandrel. In one embodiment the sleeve is split along its longitudinal axis.

Abstract: The present invention provides a shell plating developing method leading to reduction of the amount of machining and improvement of the efficiency in manufacturing the shell plating. In the shell plating developing method according to the invention, a shell plating lattice system is constituted, and the directions in which the curvature of a shell plating P at each lattice point of the shell plating lattice system is maximum and minimum are determined (s102). Also, lines extending in the directions in which the absolute value of the curvature is large and small are determined as a first connection line L1 and a second connection line L2 (s104). The first connection line L1 is developed as a straight line on a flat plate P? while the length of the first connection line L1 is maintained.

Abstract: A method and apparatus for being hollow work pieces has a pressurizing arrangement that allows the pressure to be adjusted in an internal cavity defined within the work pieces between subsequent bending operations on any one work piece. The internal cavity is defined by sealing caps that are secured to the ends of the work piece.

Abstract: A method of making a pre-formed tubular member includes the steps of providing a tubular member extending longitudinally and providing a bending assembly having a mandrel with at least one ball and a bending die. The method also includes the steps of positioning the at least one ball inside of the tubular member. The method further includes the steps of bending the tubular member about the bend die to form a bent pre-formed tubular member having at least one curved portion having a recess therein.

Abstract: A method for bending magnesium alloy tubes. The method includes heating the tube at moderate temperature in the range of about 100° C. to 200° C., and bending the tube to a bend angle or forming the tube to a desired shape.

Abstract: A movable die base (2) is moved toward a stationary die base (1). A pressing force is applied by a bending punch (21) disposed on the movable die base to a bending target portion of a pipe (A) which is placed on a die (11) provided on the stationary die base and which has inserted therein a core metal (17). At the time of this bending work, both ends of the pipe are restricted by holding them with restriction pads (22). When the pressing force is applied by the bending punch, the restriction pads are displaced to follow the pressing of the bending punch, whereby restricted state on both ends of the pipe is constantly maintained.

Abstract: A method where an inside mandrel is inserted into the inner pipe of the multi-layered pipe, a tubular outside mandrel is inserted into the annular space between the inner pipe and outer pipe, the multi-layered pipe is clamped to a bending die by a clamping die, the multi-layered pipe is held at the rear of a bending portion of the multi-layered pipe by a pressure die and a crease-removing die, and the multi-layered pipe is bent by causing the clamping die to revolve around the bending die. An annular outside mandrel having at least three slits formed in the distal end thereof along generating lines is used as the outside mandrel, and the clamping die is caused to revolve around the bending die with the outside mandrel and inside mandrel protruding toward the distal end of the mutli-layered pipe from a bending start point.

Abstract: A pipe bending apparatus for performing a pipe bending method, wherein the method includes filling a workpiece with a liquid, pressurizing the liquid to a target pressure level, and bending the workpiece to create a bent pipe. Preferably, the pressure level is inversely proportional to the radius of the bend in the pipe. Furthermore, preferably the pressure is directly proportional to the bending angle of the pipe. Preferably, the pressure is maintained substantially at the target pressure during the bending process. Optionally, the pressure level can be increased during the bending process.

Abstract: A core bar for bending of a pipe and a method of bending of a pipe are provided whereby collapse of the pipe can be prevented and bending can be automated at low cost. Ends of the respective core bar portions are formed such that, when the ends of the two cylindrical core bar portions are engaged telescopically, and one core bar portion is bent at a desired angle with respect to the other core bar portion, the outside circumferential surface of the bending region that is formed by these core bar portions becomes a curved surface along the generating line.

Abstract: A bending method for producing a coil using a thick wall pipe, comprising a simultaneous hot bending and pressing of the pipe by which it is possible to obtain a coil without welded 180° elbows since the return sections are integral part of the pipe.

Abstract: A bending machine that includes a device that is used to drive and support a tube that is to be bent in relation to a bending head which is disposed at one end of a frame of the bending machine. The device includes a mandrel member that is solidly connected to an expandable member that is selectively applied against an inner wall of the tube to be bent and movement means that is used to align the mandrel member relative to a section of the tube to be bent during a bending step and that moves the expandable member to move the tube in translation and/or rotation between bending steps and when the expandable member is expanded to engage the inner wall of the tube.

Abstract: In an apparatus and method for manufacturing an automotive beam for use as a beam in structural components of automobiles, the beam is provided with significant improvements in terms of torsional rigidity and yield strength. The beam improves the overall safety of passengers and maintains the simplicity of the manufacturing process. The apparatus (1) for manufacturing roll formed profile beams comprises a plurality of material dispensers (2,6), a first set of rollers (5), a second set of rollers (11), a first welding station (10) mounted between the two sets of rollers (5, 11) and a second welding station (12) at the outlet of the second set of rollers (11). The method of manufacturing roll formed profile beams comprises the steps of roll forming a first profile element followed by roll forming a second profile element enclosing the first profile element and forming a closed profile beam having an internal support structure.

Abstract: A suspension component for an automobile, such as a stabilizer bar, is provided and includes at least one localized portion having a strengthened outer surface. The localized portion is positioned at a location of highest stress along the suspension component. A method of forming the suspension component is also disclosed.

Abstract: The high yield ratio problem intrinsic in high-strength steel pipes is solved and a method of producing a steel pipe, while securing the pipe roundness is provided. A steel pipe produced from a steel plate by forming and welding is subjected to 0.3 to 1.2% of expansion and then to 0.1 to 1.0% of reduction. The steel pipe produced by this method has a structure in which martensite and/or bainite accounts for more than 80% as expressed in terms of area percentage, and has a yield strength of not lower than 551 MPa and a yield ratio of not higher than 93%. The pipe reduction is desirably carried out at a lower work ratio as compared with the pipe expansion.

Abstract: This invention relates to a procedure for manufacturing cold-formed components (R) out of sheet steel and use of a sheet bar comprising the following steps: Generation of a sheet bar (P) out of a base plate (G), which consists of a first steel material; replacement of at least one section of the base plate (G) with a sheet steel blank (1, 2) whose thickness (D1, D2) or at least one material property differs from the first sheet steel (G), wherein the thickness (D1, D2) and/or deviating material property and the geometry of the sheet steel blank (1, 2) and its position in the sheet bar (P) are determined by the material flow during the ensuing cold forming process; and cold forming of the sheet bar (P) to fabricate the component (R). The procedure according to the invention ensures an improved result of cold forming, or even enables the manufacture of specific component shapes in the first place.

Abstract: The invention concerns methods and devices for bending a cylindrical tube or the like (1) so as to obtain two consecutive sections (2, 3) of said tube forming between them a non-null angle alpha. The method is essentially characterised in that it consists in producing, in the wall (4) of the tube (1), a wave (20) defined between two flanks (22, 23) forming between them a non-null angle beta substantially centred on the separation plane (21) between the two sections, then in producing a permanent plastic deformation of the wave (20) until the value of the angle between the two sections (2, 3) is obtained. The device enables to implement said method. The invention is useful in particular but not exclusively, for producing pipes for transporting fluids in motor vehicles or the like.

Abstract: A method for producing a bumper reinforcement having a hollow and a substantially rectangular cross sectional shape formed by the steps of providing a straight tubular member and forming a curved bumper reinforcement, continuously; wherein angle portions of the straight tubular member having the radius of curvature established in profiling corner portions of an inner die having the radius established in larger than the radius of the corner portions of the outer die are bulged in a range of relief spaces formed between the corresponding corner portions of the inner die and the outer die to prevent generation of the wrinkles particularly on the angle portions of the straight tubular member while being curved.

Abstract: A process for forming a starting profile with a profile cavity by a bending forming process and an internal high pressure produced in a sealed profiled cavity by way of a fluid, including the steps of initially, before forming by internal high pressure, forming a starting profile at a distance from free ends of the starting profile and across a longitudinal axis of the starting profile into a cross-section with favorable bending properties, by one of transversely inwardly bent side walls of the starting profile, folding during bending, flat pressing or a flat high-sided profile produced in an extrusion process.

Abstract: Process for deforming a piece of thin-walled metal tube, comprising the operations of bending the piece of tube with respect to its original axis, in which process the wall of the piece of tube is firstly provided, at least at the location where the bend is intended to be, with a deformation which extends substantially in the longitudinal direction of the piece of tube, and in which process wall material is moved closer to the neutral plane of bending, and the piece of tube is then bent, after which the ultimate shape of the piece of tube which is to be deformed is imposed by hydroforming.

Abstract: A system 10 for designing an automotive component such as an air induction tube 22. A CAD system 18 receives certain programmable parameters 14 and a user selected integer value 16 by way of a user interface 12, and generates a tube design 22 having a number of curved portions which is equal to the integer value 16. Each portion the resulting tube 22 is independently programmable or modifiable, thereby providing a designer with a large degree of flexibility in altering the design and/or configuration of tube 22 without having to redesign an entirely new tube.

Abstract: A pipe bending apparatus for performing a pipe bending method, wherein the method includes filling a workpiece with a liquid, pressurizing the liquid to a target pressure level, and bending the workpiece to create a bent pipe. Preferably, the pressure level is inversely proportional to the radius of the bend in the pipe. Furthermore, preferably the pressure is directly proportional to the bending angle of the pipe. Preferably, the pressure is maintained substantially at the target pressure during the bending process. Optionally, the pressure level can be increased during the bending process.

Abstract: A seal features a first curved region generally concave in a direction of concavity, and a second curved region generally concave in the direction of the concavity of the first curved region. The second curved region is oriented within the direction of concavity of the first curved region. A first bend connects the first curved region to the second curved region, and a second bend connects the first curved region to the second curved region.

Abstract: By means of this process it is intended to achieve a high mechanical-geometric accuracy of bent tubes, and it is used for bending a measuring tube for a Coriolis mass flow rate sensor by means of a tube section of a predetermined length and by means of a two-piece press mold, which has been matched to both the measuring tube, which has an inner diameter and an outer diameter, and to the desired shape. To this end, a flexible support body is inserted into the tube section, which is fastened in a first end of the tube section in such a way, that the end is closed, and whose maximum outer diameter is less than the inner diameter of the tube section. The tube section is filled with a liquid which is subsequently permitted to solidify completely. The tube section filled with the support body and the solidified liquid is placed into the opened press mold, the latter is closed and the tube section is bent into the desired shape by this. The press mold is opened and the bent tube section is removed.

Abstract: A two piece cable tie is provided having an improved metal locking device anchoring system. The cable tie includes a strap including a first end and a free end and a locking head secured to the first end of the strap that defines a strap accepting channel in the head having a strap entry end and a strap exit end. The locking head further includes a metal locking device receiving cavity adjacent to and open toward the strap exit end of the locking head and a mounting slot having an inner support wall, an outer support wall and a support slot communicating the mounting slot with the receiving cavity. A metal locking device is mounted through the metal locking device receiving cavity into the mounting slot. The metal locking device has a free end positioned within the strap accepting channel and a fixed end having at least one bent tang protruding outwardly from a surface of the metal locking device. The fixed end having the at least one bent tang is insertable through the support slot.

Abstract: A method and pipe-bending tool for manufacturing a pipe-offset for a connector at the end of a pipe, needed in the extension of the connector of the pipe of a pipe layer installed on a surface in which said pipe-offset for the connector, i.e. two consecutive bends are manufactured close to the end of the pipe due to the need of space of the connector, in order to move the end of the pipe in parallel to a certain distance from the level of the pipe layer. The bends are produced by placing the pipe between two lasts of a handheld tool, which are pressed against each other with the help of an operating device and in which there exists a pipe-offset of the connector, i.e. forms equal to both bends. The lasts are able to turn at least in a limited manner around the axle in the direction of the pressure, whereby the lasts can easily be turned in the direction of the pipe.

Abstract: A die assembly for machines used to bend lengths of pipe for pipeline applications. The die assembly includes three major components, an exterior housing, a flexible die, and an eggcrate assembly. The exterior housing encompasses the flexible die and eggcrate assembly and pins into conventional bending machines. The flexible die includes a plurality of narrow plate segments positioned along a pair of tie rods. The plate segments are free floating and spaced so as to converge or diverge with respect to the direction of flex of the tie rods. The eggcrate assembly provides support for a plurality of spring plates. Each spring plate has a radius of curvature consistent with the amount of desired bend in the length of pipe.

Abstract: A bendable hard type water tube includes a first tube with one end installed with a first seat, a second tube having one end installed with a second seat, a first buckle, a second buckle, a rotary shaft installed between the second buckle and the first buckle, a third buckle, an elastic body. The outer sides of the first buckle, second buckle, and third buckle are formed with a plurality of teeth. A resisting portion is installed on the press and resists against the third buckle. When a force is applied to the press, the angle between the first tube and second tube can be changed. When the press is released, the first tube is buckled with the second tube so as to change the direction of water flow to match the requirement of spraying water.

Abstract: A method for bending a rigid pipe to accomplish a centerline radius less than or equal to the outside diameter of the pipe. Moreover, the method accomplishes such a bend whereby the wall thickness of the pipe on the outermost portion of the wall of the pipe is substantially maintained, as is the inside diameter throughout the bend of the pipe. The pipe bend is accomplished by first determining the desired angle of bend and the desired centerline radius. The arc length of the outermost portion of the pipe is then determined. The height and width of each corrugation is then selected in order to determine the length of the outer surface of each corrugation. The arc length is then divided by the corrugation length to determine the number of corrugations required to accomplish the desired bend. The pipe is then deformed to define the required number of corrugations having the determined height and width. After forming the corrugations, the pipe is bent through the selected degree of the bend.

Abstract: An apparatus and a method for manufacturing a thick-walled bent pipe with a simple structure at low production cost, which has durability and can manufacture an elbow material for piping with higher size accuracy, are provided. For this purpose, the manufacturing apparatus is a manufacturing apparatus comprising a presser die (12) and a lower die (20), in which the lower die (20) includes a pair of bottom dies (21, 22) having meshing means (30), and a pair of the bottom dies (21, 22) are allowed to rotate opposite to each other by the meshing means (30), in connection with a descent of the presser die.

Abstract: A method for automatic conducting of a straightening process for an object to be straightened, such as sheet metal, strips, sections, pipes, and in particular for wire-like or multiwire-like objects that are to be straightened, in a straightening device or a levelling machine with at least one mangle roll which can be adjusted by an actuator. In accordance with this invention, a process simulation model of a straightening process that is to be conducted, and a process simulation program are set up, and the latter gives directly “online” the settings of the adjustable mangle rolls.

Abstract: The present invention relates to improved methods for manufacturing bumper beam assemblies and bumper beam assemblies made by such methods. One method of the invention allows bumper beams of different longitudinal configurations to be made by selecting open cross-sectioned, roll-formed bumper beam members from different sets of beam members and fixing them to bumper beam mounting structures. The mounting structures close off the open cross-section of the bumper beam members. Another method of the invention allows bumper beams for varying applications to be made by selecting bumper beam members from inventory and fixing them to a bumper beam mounting structure.

Abstract: In a method of bending a pipe material, in order to use an apparatus, such as a press, and prevent the pipe material from being made thin and cracks from being generated, one side of a cylindrical pipe material is firmly held by a first clamp and another side thereof is loosely held by a second clamp. The clamp is relatively moved downward with respect to the clamp. At this time, pressing force is applied to the pipe material in an axial direction from both ends thereof. The pipe material is plastically deformed by being guided by one quarter spherical surface of a first mandrel and one quarter spherical surface of a second mandrel, whereby two bent portions and an intermediate straight portion are formed.

Abstract: A method and apparatus for bending thermoplastic tube in which a pre-heated region of the tube is conformed to a required bend configuration while supported internally and externally to prevent the tube wall collapsing. The external support is provided by relatively movable formers which enclose a section of the tube at the point where the bending force is applied and this enclosed section moves progressively along the heated region as the bend is developed by the relative movement of the formers. The internal support is provided by fluid pressure higher than atmospheric pressure within the tube during the forming operation. Multiple bends can be formed sequentially and/or siitultateously.