Abstract: A new configuration and operating method therefore improves conventional continuous pickling and cold-rolling systems in response to increasing demands for high-propertied steel plates. The continuous pickling and cold-rolling equipment system comprises a uncoiling apparatus, a joining apparatus, an accumulating looper, a cleaning section, a pickling section, a cold rolling mill, a cutting apparatus, and a coiling apparatus. This configuration and associated operation method realize a rolling line having a substantially infinite number of mill stands enabling continuous or endless cold rolling without additional mill stands. Thereby, production of cold rolled steel strip with a large total reduction ratio for high-grade steel strips effectively using a small number of mill stands becomes practicable. At least one of the embodiments clearly shows acceptable productivity that can stand comparison with a typical conventional cold rolling system.

Abstract: An apparatus for making mattress and upholstery spring coils. The apparatus has a wire feeding device and a wire guide adapted to support first and second wires of different diameters. The wire guide is movable to first and second positions to align the first and second wires, respectively, with the wire feeding device. A spring coiling machine is positioned adjacent the wire feeding device. When the wire guide is in the first position, the spring coiling machine receives the first wire of one diameter from the wire feeding device; and the spring coiling machine bends the first wire into a spring coil of a desired diameter and pitch and having a first stiffness. When the wire guide is in the second position, the spring coiling machine receives the second wire of another diameter from the wire feeding device; and the spring coiling machine bends the second wire into a spring coil of the desired diameter and pitch but having a second stiffness.

Abstract: A vehicle-straightening bench (20) is utilized to apply pulling forces to a damaged vehicle chassis to restore the damaged chassis to an original configuration. The bench includes a vehicle platform (22) with a carriage track (24) having a plurality of carriage assemblies (100) movably received by the carriage track (24). Each carriage assembly (100) supports a pulling assembly (200) for applying the pulling forces. A trapezoidal carriage body (102) of the carriage assembly (100) rolls in the carriage track (24), and the carriage assembly also includes a tower positioning mechanism (104) to hold the pulling assemblies (200) in place while the carriage body (102) is are rolled on the track (24). The carriage assembly (100) also includes a locking mechanism (106) to lock them in place during a vehicle a pull.

Abstract: The present invention is for a method of fastening a tool holder. The tool (2) has a front side (6) shaped for use in cold forming of metal wire into nails, screws, etc. The tool holder (4) has a recess (8) shaped for receiving the tool (2). When the tool (2) is fastened in the tool holder (4), compressive stresses are initially present in the tool (2). The tool (2) is subjected to tensile stresses caused by the nail making process when in the tool holder (4). In order to reduce the resulting tensile stresses, the two opposite and wedge-shaped sides (10, 12) of the tool (2) are compressed against corresponding sides (14, 16) in the recess (8) by applying and maintaining pressure on the back side (18) of the tool with fastening means (20).

Abstract: A rolling mill, a gap-removing apparatus for roll bearing boxes, a rolling method, a modifying method for a rolling mill, and hot finish tandem rolling equipment are provided with roll bearing boxes for rotatably supporting work rolls in a housing, a first pushing device for applying a vertical balancing force or bender force to the work rolls through the roll bearing boxes, and a second pushing device for applying a pushing force in a direction orthogonal to the work roll axis in a horizontal plane to the roll bearing boxes. The first pushing device and the second pushing device are disposed to be offset from each other in the work roll axis direction. In certain arrangements, the second pushing device is disposed between a plurality of the first pushing devices in the work roll axis direction. Gaps at the roll bearing boxes in the rolling mill can be removed without enlarging the equipment in size.

Abstract: A shaping device for producing a U-shaped conductor includes a holding portion, a feeding portion, a core metal portion and a shaping portion. The core metal portion includes a core metal and an upper guide portion. The core metal forms a die. The upper guide portion restrains upward movement of the conductor material during the shaping operation. The shaping portion includes a shaping element and a lower guide. The shaping element shapes the conductor material into the U-shape by urging the conductor material along the core metal. The lower guide restrains downward movement of the conductor material during the shaping operation. It is possible to move the shaping element downwardly after the conductor material is shaped into the U-shape. The conductor material can be fed forward without returning the shaping element to its initial position.

Abstract: At the time of spinning a tip reduced portion 3, an angle of inclination of the outer periphery of the tip reduced portion 3 with respect to an axis of a tube stock 2 is increased on a center side of the tube stock 2 and reduced on an end edge side thereof. By this, a generating line of an outer peripheral surface of the tip reduced portion 3 is made into a form like a center recessed curved surface.

Abstract: In a cluster type split housing type rolling mill, the plate thickness control capability is improved by maintaining maximum mill rigidity. An upper inner housing supporting an upper group of rolls is supported at two points in a rolling pass direction at upper outer housing sections. A lower inner housing supporting a lower group of rolls is supported at a single point in the rolling pass direction at lower outer housing sections. The upper and lower housings have different levels of vertical rigidity.

Abstract: A method for bending a work of a plate shape by moving a die with the work being butted against a butting member, and an apparatus for executing the method are provided. The bending apparatus is provided with an input unit for inputting data on bending conditions including respective target values of a bending angle and a bending dimension, as well as respective measured values of a bending angle and a bending dimension of the work obtained in trial bending. A control device installed in the apparatus executes an initial computation for computing an operation amount of the die when the data on bending conditions are inputted. Further, the control device executes computation for a correction value for an operation amount of the die and computation for an estimated value of a bending dimension when the respective measured values of the bending angle and the bending dimension obtained in trial bending are inputted.

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: The invention relates to a method and a device for forming a corner bounded on three sides from a flat plate part, in particular sheet metal, whereby the side edges adjacent to the corner are folded back across a major part of their longitudinal extension parallel with the flat plate part and shaped on a curved path in the region in which the corner is to be formed from the folded-back side edge to the plane of the flat plate part. The pre-formed blank is then pressed at the curved transition region by means of at least one roller system (42), spanning the corner region (10) between the side edges, against a tool (16) and the corner shaped by forming the material and optionally trimmed in a cutting device.

Abstract: A metal plate is formed in a process comprising cutting, perforating or both, by forcing the plate, by means of an abrupt and intense force towards a mold having openings or boundaries defined by wall sections which extend essentially normal to the forming plane of the mold. Consequently, the plate is cut along the edges of the openings or boundaries. The force may be a pulsed magnetic force or may be a force generated as a result of the discharge of electric current through a fluid.

Abstract: A vehicle-straightening bench (20) is utilized to apply pulling forces to a damaged vehicle chassis to restore the damaged chassis to an original configuration. The bench includes a vehicle platform (22) with a carriage track (24) having a plurality of carriage assemblies (100) movably received by the carriage track (24). Each carriage assembly (100) supports a pulling assembly (200) for applying the pulling forces. A trapezoidal carriage body (102) of the carriage assembly (100) rolls in the carriage track (24), and the carriage assembly also includes a tower positioning mechanism (104) to hold the pulling assemblies (200) in place while the carriage body (102) is are rolled on the track (24). The carriage assembly (100) also includes a locking mechanism (106) to lock them in place during a vehicle a pull.

Abstract: Tool units (400) are slid by crank mechanisms (409) which are arranged on the respective sides of a table (200), convert rotational motions into translational motions, and use servo motors as drive sources, and are supported to swing on the rear end portions of the tool units.

Abstract: A method for controlling a bar processing mill having an exit and a cooling bed to produce bars of a predetermined cold length. The method includes, for a first bar in a processing order, calculating a long hot cut length based, at least in part upon a predetermined cold length. In addition, the method includes adjusting the long hot cut length based on a total length of bar exiting the exit, if the long hot cut length is greater than a minimum cooling bed length, and if a number of layers of bars to be processed on the cooling bed is less than a predetermined number.

Abstract: Superplastic forming of sheet metal blanks is advanced both is quantity and quality with the utilization of a part separating and pressure distributing mid plate sandwiched between a pair of blanks. This arrangement is loaded between upper and lower die halves operatively mounted in a heated press which closes to effect the piercing of one of the blanks by a nozzle which subsequently delivers pressurized air or other inert gas to an intermediate chamber formed by the mid plate between the blanks to effect the simlayaneously forming of separate parts in both forming dies.

Abstract: In a process in roller folding a folding roller is moved against a workpiece. The urging force of the folding roller against the workpiece is resilient, and the folding roller moves in a path along the workpiece by means of a movement device provided with a control system. The urging force is sensed by a sensor, which is integral in or included in the movement device, and the output signal of the sensor is fed to the control system.

Abstract: The invention concerns a tool for regulating the surface pressure on a blank constituting a metal plate which forms the starting item for shaping a finished item in a press. The blank is placed between a draw ring (23) and a blank holder ring (24). Besides, the tool comprises a shimming plate (1, 5, 10) provided with chambers (2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14) which are delimited by the shimming plate itself and by a flexible membrane (27). The shimming plate is placed between a tool bottom part (17), alternatively a tool top part (16), and the blank holder ring, alternatively the draw ring. A pressure medium like hydraulic oil may be led to the chambers. Thereby it is possible locally and individually to increase the surface pressure on the blank depending on the number of chambers, the design of chambers and the location of the chambers in the shimming plate. Furthermore, it is possible to regulate the pressure during the shaping process itself.

Abstract: A roll shifting cylinder 14 is driven to pivot a lever arm 12, thereby shifting a work roll 1 via a thrust bearing 15. A control unit 27 performs auto-positioning control, based on a shift amount performance value of the thrust bearing 15 detected by a shift amount detection sensor 16, so as to obtain a target roll shift position. A constant clearance amount is maintained between an end surface of the work roll 1 and the thrust bearing 15 during a rolling operation, and a chockless mill is effectively used as a work roll shift mill.

Abstract: The present invention relates to a method and an apparatus for manufacturing keystone type superconducting compacted stranded wires. In manufacturing the keystone type superconducting compacted stranded wires, a large number of superconducting wires are stranded to form stranded wires, which are then roll-formed. The method and apparatus are configured so that, in the roll-forming, one side of the compacted stranded wires, which is thinner than the other side thereof after being roll-formed, comes into contact with one flat roll before the other side of the compacted stranded wires comes into contact with another flat roll. The method and apparatus are provided as another configuration wherein one flat roll to contact with the compacted stranded wires to be thicker is smaller in diameter than another flat roll to contact with the compacted stranded wires to be thinner.