Abstract: One aspect of the present disclosure is a manufacturing device for a bent pipe. The manufacturing device includes an inner core metal placed inside a first pipe, and a tubular intermediate core metal placed between the first pipe and a second pipe. The intermediate core metal includes an intermediate core metal main body and a tubular first intermediate movable portion. The first intermediate movable portion is coupled to an end portion of the intermediate core metal main body, and swings about a first intermediate pivot axis relative to the intermediate core metal main body. The intermediate core metal main body includes an edge positioned closer to the first intermediate movable portion while the double pipe is bent. The edge intersects an imaginary plane orthogonal to a central axis of the second pipe at a position where the second pipe contacts the intermediate core metal.

Abstract: A wire forming apparatus comprises a first rack moveable relative to a second rack in a first direction, a plurality of first forming structures provided on the first rack, and a plurality of second forming structures provided on the second rack. Each of the plurality of first forming structures is configured to move in the first direction, is separated from an adjacent first forming structure, and is configured to move in a second direction closer to the adjacent first forming structure when the first rack moves relative to the second rack. Each of the plurality of second forming structures is configured to move in the first direction, is separated from an adjacent second forming structure, and is configured to move in the second direction closer to the adjacent second forming structure when the first rack moves relative to the second rack. The second direction is different from the first direction.

Abstract: A shallow single plate cold roll formed steel tub girder member is fabricated from unheated steel plate material by a cold roll-forming process which eliminates longitudinal welds and induces camber in the tub girder member.

Abstract: A device (10) is disclosed for bending hollow structural components (100), in particular pipes, having a mandrel shaft (40) for receiving a receiving element (20), wherein a row of at least two ball joints (30, 30?) connected with each other can be inserted into the receiving element (20) at its end, wherein the row of ball joints (30, 30?) is preferably lockable by a ball-and-socket joint (70) at an end located opposite the receiving element (20), wherein each ball joint (30, 30?) of the row is circumferentially enclosed by a shingle (50, 50?) and the ball-and-socket joint (70) is circumferentially enclosed by an end shingle (60) and the shingles (50, 60) overlap each other at least in portions.

Abstract: A device for cold working pipe elements has two or more cams, each having a gear, the gears being synchronized to turn all of the cams. Each cam has a cam surface with a region of increasing radius and may have a region of constant radius extending around a cam body. One or more cams may also have a traction surface extending around a cam body. A discontinuity in each cam surface is aligned with a gap in the traction surface of each cam. The discontinuities and gaps provide clearance for insertion and removal of the pipe element between the cams to form a circumferential groove when the cams are rotated. An engagement body is mounted between the cams to engage and disengage from a stop surface on one of the cams. Engagement between the engagement body and a stop surface prevents rotation of the cams.

Abstract: Provided is a method of manufacturing a pipe including a large-diameter portion, a small-diameter portion, and a reduced diameter portion connecting the large-diameter portion and the small-diameter portion, the method comprising: forming a metal plate member into a U-shaped member having a U-shaped cross section; and forming the U-shaped member into a shape of the pipe. The U-shaped member includes: a curved portion facing an opening between both edges of the U-shaped cross section; and two facing side walls continued from the curved portion. An opening degree of the two facing side walls in a portion to form the small-diameter portion is larger than an opening degree of the two facing side walls in a portion to form the large-diameter portion.

Abstract: A method and device for manufacturing a large-sized thin-walled tubular part by gas-liquid internal high pressure forming (IHPF). A gas and a liquid are filled at a certain volume ratio into a thin-walled blank. The pressure of the gas-liquid mixed fluid is mainly determined by the gas pressure. During the deformation of the thin-walled blank, due to a large compression ratio of the gas, the gas-liquid pressure will not basically change with the change of the volume of a blank cavity. A support pressure on the cavity of the thin-walled blank is stable in the entire forming process. In addition, even if there is a slight leakage of the liquid or gas during the forming process, the medium pressure inside the blank will not fluctuate largely. In this way, embodiments lower the requirements for the sealing effect during the tubular part forming process.

Abstract: The present disclosure discloses an apparatus and a method for forming a large-scale thin-walled ring shell by hot-press bending with internal gas pressure. The method comprises: welding a first head and a second head to the pipe; arranging a first electrode and a second electrode at the two ends of the pipe; charging compressed gas to the heated sealed pipe assembly; placing the sealed pipe assembly between the convex part of the first die and the concave part of the second die, controlling the temperatures of the first and second dies to perform press bending; increasing the gas pressure in the bent sealed pipe assembly, to attach the bent sealed pipe assembly to the die cavity profile; discharging the compressed gas, cutting the first head, second head and extra material to obtain a formed ring shell segment; welding formed ring shell segments to obtain a large-scale thin-walled ring shell.

Abstract: Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can convert a rotational input force (e.g., supplied by a powered driver tool) into movement of a first rod holder with respect to a second rod holder. Such movement can form a bend in a rod or other implant held by the first and second rod holders. Various mechanisms for converting this movement are disclosed, such as a worm drive mechanism and a conical gear mechanism, as are various types of rod holders, including orbiting rollers, lid-type rod holders, fixed and pivoting half-pipe rod holders, and full-pipe rod holders. In some embodiments, the instrument can also be used for cutting, for example by rotating a cutting wheel with respect to a cutting plate to cut a rod or other implant inserted through openings formed in the cutting wheel and the cutting plate.

Abstract: A forming tool for forming a metal sheet, having an upper tool part and a movable sheet holder that is supported against the lower tool part, and having a locking device, which is provided between the sheet holder and a hold-down and has at least one spacer element that is supported so that it is able to move from a rest position into a working position as a function of a relative movement, which occurs during the closing of the forming tool. The forming tool also has a wedge drive with a slider and a driver, the slider that is equipped with the spacer element is supported so that it is able to move in contact with the driver as a function of the relative movement that occurs between the sheet holder and the upper tool part during the closing of the forming tool, in order to move the spacer element into its working position.

Abstract: A method for manufacturing a complex-curvature tubular product starting from a metal tube extending along a rectilinear longitudinal axis is provided.

Abstract: A bending device is provided in a tape feeder. In the bending device, lead wires of a bending target lead component that has reached a bending position of lead component tape fed by a feeding device are bent. In addition, as the lead wires are cut by a cutting device, bent lead components are separated from a carrier tape, and the bent lead components are supplied one by one. In this manner, in the tape feeder, as the lead wires of the lead component tape are bent, the bent lead components are supplied.

Abstract: The invention discloses aluminum alloy wheel shape-correcting equipment which comprises rack, an output end of positioning air cylinder is arranged at the bottom of the rack corresponding to the center of the upper rotating disc and is vertically and upwards connected with positioning cone.

Abstract: A method for producing a trim strip comprising an extended portion (20) and a bent portion (19) which has a sharp edge (21) comprising the following steps: i) providing a blank with a material thickness and a shaped end cap contour (27); ii) bending the cap contour (27); iii) forming a sharp edge (21) along the bent portion (19), wherein a punch (31) for the edge-forming process, comprising a side surface (33, 37) which is stepped so as to correspond substantially to the material thickness and which faces the die (30) and counter die (32), is guided along the side surfaces (52, 35) of the counter die (32) and die (30) such that the step (34) of the punch (31) engages with the marginal edge (56) and displaces the material of the folded portion (19) towards the edge portion (21), thereby forming a sharp edge.

Abstract: Provided is a device for manufacturing a bent pipe, the device being capable of reducing buckling. The device including: an inner core metal arranged inside a first pipe; and a bending mold to bend the first pipe. The inner core metal includes: an inner core metal body; a first inner movable portion coupled to the inner core metal body and swingable around a first rocking shaft orthogonal to a central axis of the inner core metal body; and a second inner movable portion coupled to the first inner movable portion and swingable around a second rocking shaft parallel to the first rocking shaft. The first inner movable portion has an enlarging diameter portion enlarged in diameter toward the second inner movable portion. The bending mold causes an inner surface of the first pipe to press the first inner movable portion and the second inner movable portion.

Abstract: A paintless dent removal tool for removing a dent from a vehicle is disclosed. In some embodiments, the paintless dent removal tool includes a stabilizer assembly having a first leg, a second leg and a body therebetween. The body having an opening therethrough, the stabilizer assembly for stabilizing the paintless dent removal tool on a surface of a vehicle. The paintless dent removal tool including a pull bar having a first end and a second end. The first end of the pull bar positioned partially through the opening of the body of the stabilizer assembly and adjustably connected thereto. The paintless dent removal tool including a handle assembly having a first end, a middle portion and a second end. The middle portion of the handle assembly is adjustably connected to the second end of the pull bar. The paintless dent removal tool including a tip member detachably connected to the second end of the handle assembly.

Abstract: A stripping device (7) for a roll stand (1) includes a stripper carrier (15) and a stripper (17) arranged on the stripper carrier (15). The stripper (17) has a main body (19) produced from a fiber-plastic composite. The main body has a main body bottom side (23), which contacts the stripper carrier (15). A felt layer (21) is arranged on a main body top side (25) of the main body (19) which is opposite the main body bottom side (23).

Abstract: A method for forming large titanium parts includes forming bends into a titanium plate for form a bent part. The bent part is then roll-formed to form contours into the bent part. The surfaces of the contoured part are rough-machined, and the part is then secured to a bladed form fixture. The bladed form fixture comprises a plurality of header boards that secure the part to the fixture. The fixture part is placed in a thermal vacuum furnace and a stress-relieving operation is performed. The part is removed from the fixture and final machining takes place.

Abstract: When an opposite direction shift for obtaining a required equivalent roll crown and a same direction shift for wear dispersion are used in combination, a difference occurs in the roll gap at both edge portions in the width direction of a rolling target material. Therefore, the difference between a work-side screw down position and a drive-side screw down position is changed so that the roll gap difference between both the edge portions in the width direction of the rolling target material is made close to zero. As a result, the distance between the work roll shafts on a work side and a drive side is changed, so that the roll gap difference at both ends in the width direction of the rolling target material approaches zero. Therefore, the wear of the work rolls can be dispersed while maintaining the equivalent roll crown.

Abstract: Disclosed is a method for changing the rolls on a rolling mill for rolling a metal strip, carried out using a Quarto rolling mill, including lower and upper working and support rolls. The installation includes a system for extracting the working rolls and the support rolls, including: an actuator pushing the rolls out of the roll stand extraction; a coupling head, secured to the actuator, situated in a position of opening of the roll stand, including: a first coupler driving the chock or the end of the lower working roll, on the rolling-mill drive side; a second coupler driving the chock of the lower support roll, on the rolling-mill drive side. The first and second coupler allow successive extractions of the working rolls and then of the support rolls from the roll stand using the actuator of the extraction system. Also disclosed is a related rolling mill installation.