Abstract: In a mandrel mill for elongating and rolling a hollow shell, with a mandrel bar inserted, by passing the hollow shell, a four-roll stand for diameter reduction used to reduce only the outer diameter of the hollow shell is disposed as the first stand, a group of two-roll stands for wall thickness reduction used to reduce the wall thickness of the hollow shell is disposed following the four-roll stand, and a four-roll stand for eccentric wall cancellation used to cancel any nonuniform wall thickness in the circumferential direction of the hollow shell is disposed as the final stand. The ratio (D.sub.i /D.sub.m) between inner diameter D.sub.i of the hollow shell on the outlet side of the four-roll stand as the first stand and outer diameter D.sub.m of the mandrel bar is 1.05 or less.

Abstract: In a corner reduction device for reducing side corners of a slab with corner rolls, a pair of upper and lower corner rolls are mounted inside a unitary unit frame, and a corner roll unit housing the unitary frame which is movable in the direction of width and vertical direction of the material is formed. Vertical position of the corner roll unit is controlled by a lifting power control cylinder through a push rod and position in direction of material width is controlled by a reduction cylinder. Driving of cylinder servo valves is controlled in accordance with position set values set by position setters, load set values set by load setters, and feedback signals from position sensors, thereby controlling the corner roll positions to fixed lateral and vertical positions. The driving of the servo valves is corrected according to values detected by cylinder pressure sensors, to evenly reduce the right and left corners of the material.

Abstract: A rolling block for rolling metallic bars or wires, has a plurality of rolling frames arranged on successive frame spots and each having three rollers arranged in a star-like manner and radially adjustable with respect to a longitudinal axis of a rolling product, a drive for driving the rollers and including separately regulatable motors, the rolling frames including less rolling frames than the frame spots, a first one of the rolling frames which is provided with a drawing pass being located at a first frame spot provided at an inlet side and having a separate front one of the motors, all of the rolling frames provided with finishing passes being located at last frame spots at an outlet side and driven by at least one rear motor, and all remaining rolling frames provided with drawing passes being located at frame spots which immediately follow the first frame spots or at frame spots immediately preceding the rolling frames with finishing passes and driven jointly by at least one central motor.

Abstract: A four-roller type sizing mill apparatus for forming round steel rods, comprises two four-roller mills each having two pair of facing rollers. One pair of facing rollers is arranged in rolling direction perpendicular to the rolling direction of the other pair of rollers. The two four-roller mills are arranged in line, with the rolling direction of one of the two four-roller mills being shifted by 45.degree. from the rolling direction of the other four-roller mill. The two pair of rollers of a first four-roller mill positioned closer to the rolling material inlet are separated from each other by a distance which is greater than zero and not greater than five times the projected contact length of one of the pair of rollers positioned closer to the rolling material inlet.

Abstract: An edging mill for section rolling has a pair of horizontal rolls, each horizontal roll including a pair of axially spaced horizontal roll segments supported by driven horizontal roll shafts. Eccentric rings are disposed between the two horizontal roll segments making up each horizontal roll and are rotatably mounted on the horizontal roll shaft. The eccentric rings are eccentric to the horizontal rolls. Web-restraining ring rolls each comprise a pair of web-restraining roll segments rotatably fitted over the periphery of the eccentric rings concentrically thereto. A web-restraining ring roll positioning device rotates the eccentric rings. While the horizontal rolls roll the flange edges of the section, the web-restraining ring rolls hold the web of the section therebetween. The position of the web-restraining ring rolls with respect to the horizontal rolls changes with the rotating angle of the eccentric rings.

Abstract: Bending preshaped sheet metal pieces that have a web and side flanges, by stretching on one side, and compressing on the other side, by utilizing opposed rollers. They can be, and are, selectively bent into cylinder shapes or cone shapes. The bending steps produce folds in the extended edges of the flanges, of circular cross sectional shape, and in one form, are of large dimensions on one side and of small dimensions on the other side, and adjacent pieces are interconnected by placing the large fold of one piece over and encompassing the small fold of the other piece, to form lids of great area.

Abstract: A roller-type straightening apparatus for an H-beam having horizontal rolls for pressing the web of the H-beam are alternately vertically disposed. Pairs of vertical rolls press the outer surfaces of the opposed flanges of the H-beam. The horizontal roll presses the surface of the web of the H-beam. The pairs of vertical rolls are located to correspond in position to each of the horizontal rolls.

Abstract: A roll for a rolling mill capable of an on-line control of the width thereof. The roll includes a drive roll connected to a mill motor and a hollow driven roll driven by the drive roll while being axially slidable with respect to the drive roll. A screw shaft is screwed to the inside of the hollow driven roll in such a manner that an end-to-end contact of the driven roll with the drive roll is obtained. A clutch is provided for a selective locking of the screw shaft, which is unlocked during a normal rolling process, so that the screw shaft is rotated together with the drive roll and the driven roll by a rotation of the mill motor. When adjusting the roll width, the clutch is operated so that the screw shaft is locked, and as a result, a rotation of the mill motor causes a mutual axial movement of the drive roll and driven roll to thus adjust the roll width. A means is also provided for a centering of the roll at the pass line of the material, after the adjustment of the roll width.

Abstract: The present invention is to provide a compact roll stand apparatus, particularly of four-roll type, comprising both a roll parting adjustment device and an all-roll drive device.

Abstract: In a roll type straightener, a barrel assembly including a pair of rolls (3, 3'), tightening male and female screws (5, 4), displacement male and female screws (14, 13) is mounted on a main shaft (8). The periphery of the respective female screws (4, 13) have a plurality of notches (22), with which pawls (18a, 19a) of levers (18, 19) are engageable for preventing the female screws (4, 13) from rotation with the main shaft (8) by a drive source. Upon the adjustment of barrel width, the pawl is selectively engaged with the notch (22) of the tightening female screw (4) or both female screws (4, 13), so that the female screws drive the mating male screws (5, 14) in the axial direction to displace one of the rolls (3') to a predetermined position, as the main shaft (8) rotates. The operation sequence is controlled in a fully automatic manner by a controller (23) while monitoring the rotation of the main shaft (8) by a detector (20).

Abstract: A roll forming apparatus comprises a plurality of driving roll stands and a plurality of drivingless roll stands, wherein the drivingless roll forming stand comprises an upper and a lower roll units and side roll units arranged around a central through-hole of a plate member supported by a supporting post. Each of the roll forming stands is adapted for automatically positioning each of the rolls associated therewith to preset positions for bending operation. The plate member is rotatable about the axis of the central hole, and a transverse slide table fixedly mounting the supporting post is transversely movable to the axis. Molding laces for cars are roll formed by bending a strip during travelling through a series of these adjusted roll stands.

Abstract: A section steel straightener for correcting deformations in section steel, such as H-beams. The straightener allows for adjusting the width of the rollers without disassembling the apparatus, but rather by rotating sleeves to change the distance between rollers. Also disclosed is a plurality of rollers forming at least one of the fixed roller and movable roller such that the required amount of movement of the movable roller is reduced, thereby reducing idle time of the straightener.

Abstract: A method of fabricating box section from steel with walls of non-uniform thickness along its periphery. A starting product in the form of round tubing with a wall that is uniformly thick along its circumference is manufactured and rolled into box section with walls of uniform thickness along its periphery. A temperature difference is generated between the flange midsections and the web midsections of the box section with walls of uniform thickness along its periphery such that the flange midsections are at least 600.degree. C. hotter than the web midsections, the flanges are edged and thickened peripendicular to the longitudinal axis of the box section, with the edge length being shortened, by rollers, and the box section is finally cooled with air and/or water subject to standardization conditions.

Abstract: In conventional fabrication manufacture the thickness of the steel plates are often determined by the metal section required at the weld joints. The subject apparatus and method overcomes this problem by selectively forming a thickened edge along the edge of a thinner steel plate which can now be limited to the thickness required to withstand the stresses on the fabrication. The thickened edge is produced by forcing a plate supported by a table, by passing the plate through a forming apparatus comprised of a combination of rollers. The forming apparatus and table are automatically controlled to produce a thickened edge of constant shape along a non-linear edge of the plate.

Abstract: This invention relates to an edging roll for rolling the flange edges (12a) of a rolling material (12), specifically to an edging roll which is adaptable commonly to rolled sections having different dimensions and is capable to roll the flange edges with the web portion of the rolling material guided. The web guide roll (10) is ring-shaped and rotatable along the outer periphery of the outer eccentric sleeve (6). When rolling material is changed according to a schedule in rolling mill operation, the inner eccentric sleeve (5) is rotated along the outer periphery of the flange roll (8) and set there, the outer eccentric sleeve (6) is rotated along the outer periphery of the inner eccentric sleeve (5) and set there. And the flange roll (8) is set at a position of rolling the flange edges, and the web guide roll (10) is at a position of restraining and guiding the web portion.

Abstract: In the fabrication of H-piles, I-beams, channels, tees, angles, double-tee structural shapes and similar rolling stock, a first structural shape segment or web is joined to at least one second structural shape segment or flange which may be bent outwardly. After the edging passes, during finishing, the flange or flanges are bent inwardly when the shape or stock is subjected to a final bending pass. A new bending method uses the principle of a three-roll bending process. An alternative bending solution includes a bending process with backup rolls for the first structural shape segment or web which do not touch the inner surfaces of the flanges or second structural shape segments.

Abstract: A method is provided for producing high purity electrolytic copper useful, for example, to make a copper wire for use in sound or image reproducing systems, such as audio, video and television systems, etc. The copper wire consists of high purity copper in which silver and sulfur contents are both not more than 0.5 ppm and preferably has a crystal grain size not less than 0.02 mm and is unidirectionally solidified or is a single crystal. Such a copper wire is manufactured by continuously casting electrodeposited copper which has been obtained by refining by re-electrolysis of electrolytic copper, using a specially arranged casting apparatus having a mold projecting to an electrolytic bath.

Abstract: A frame-like roller carrier (40) which defines a sizing plane (C) normal to the longitudinal axis (A) of the can bodies is arranged in relation to awelding device (24) in such a manner that the sizing plane (C) coincides at least approximately with a welding plane (B) defined by the welding device. A plurality of sizing rollers (41) are mounted on the roller carrier (40), each for rotation about a roller axis (E) lying in the sizing plane (C). The sizing rollers (41) form a rigid ring of rollers through which the can bodies (1) can be moved. The roller carrier is divided into two half-frames (40), each of which carries a plurality of sizing rollers (41). The two half-frames (40) are adjustably supported on a common bridge (31). At least one of the half-frames (40) is connected to the bridge (31) by an adjusting drive (37) for the adjustment of the sizing rollers (41) carried by it.

Abstract: A machine for making concrete reinforcing bars, known as rebars, from wire stock having a round cross section. A preform roller station cold works the round cross section of the wire stock into the shape of a polygon. A first form roller station cold works the polygonal cross section into a cross section having a central core and radial fin members extending therefrom. A second form roller station further reduces the diameter of the central core, and further increases the radial extent of the fin members. A third form roller station reduces the core still further, and again increases the radial extent of the fins, imparts shoulder members that provide an anti-longitudinal slip function at preselected intervals along the extent of the rebar, and roughens the rebar.

Abstract: A method and apparatus for the high speed reshaping of round wire as it exits a drawing machine, but prior to its being collected on a bobbin or a stempack. The shape imparted to individual wires is such that as the preshaped wires are applied to a core by a stranding machine, a cable results in which there is substantially no interstitial space between the wires which add excessive bulk.

Abstract: A wire straightener and multiple preform rollers prepare a continuous length wire for further forming by multiple form rollers having multiple spaced apart notches formed in an annular edge of the rollers. Some notches skip a section of the wire to be headed, and other notches serve to form barbs in the wire. In a first embodiment, after the formed wire is fed to a gripper housing where the wire is cut to a predetermined length, the skipped section is punched to create the fastener head. In a second embodiment, the formed wire is cut and fed to a rotary heading machine.

Abstract: An apparatus for manufacturing a core wire for use in laying optical fibers over a long distance produces a plurality of continuous corrugated deep grooves in a wire that are capable of holding therein the optical fibers longitudinally along the peripheral surface of the wire. An endless raw wire material of circular cross section is formed by the apparatus into a wire of square cross section through plastic processing and thereafter the wire is formed into a core wire of a flower patterned cross section with a plurality of petals having corrugated deep grooves in the periphery thereof continuously longitudinally thereof through a rolling device. In addition, the core wire so constructed is formed into a core wire with spiral corrugated deep grooves formed in the peripheral surface thereof. The rolling means has forming rolls equal in number to the number of ridges of the square wire, and each such roll having two perfect corrugated convex portions formed widthwise on the peripheral surface thereof.

Abstract: A roller flanging apparatus for flanging a metal strip has a flanging head that comprises a pair of working idler rollers. The idler rollers have outer surfaces forming a flanging angle therebetween. The edge of the metal strip passes between the rollers in contact with the roller outer surfaces to provide a flange on the metal strip edge. The idler rollers have an axis which defines an acute angle with a line extending perpendicular to a line that indicates the direction of movement of the metal strip and the acute angle is defined in the direction of movement of the metal strip.

Abstract: An apparatus for performing roll bending on shape metal including a first rolling roll, a second rolling roll having an outer circumferential surface juxtaposed against an outer circumferential surface of the first rolling roll, and third and fourth rolling rolls having outer circumferential surfaces opposed against end faces of the first and second rolling rolls respectively. Two to four rolls selected from the group of the four rolling rolls are used for performing roll bending on shape metal in such a manner that the shape metal has, after being subjected to the roll bending, a thickness which successively decreases in going toward its outer portion from its central portion.

Abstract: An apparatus for converting rod stock or wire rod into wire comprises heating of the rod stock or wire rod, high speed rolling and cooling thereof, and final slight drawing to make the surface thereof smooth and finished. The high speed rolling is carried out by a rolling mill having a lightweight construction and roll stands comprising three rolls at 120.degree. from one another. Two of the rolls are rotatably supported by shafts which have eccentrical ends. Two spindles having eccentrical ends engage with their ends corresponding seats in the ends of the shafts, so that rotation of the spindles provides rotation of the shafts and axial displacement thereof in order to adjust the rolling pass.

Abstract: A rolling mill is provided with at least one roll stand for rolling bar material having three adjustable driven roll disks arranged radially to the axis of the rolled material, the maximum working surface of at least one of said disks being at least 20% wider than the maximum working surface of the other two roll disks.

Abstract: Width and thickness of a hot-rolled and descaled strip are controlled by performing, in a line in which the strip runs, a rough control step for reducing correction of the width and the thickness of the strip in only the longitudinal ends thereof and a fine control step for reducing correction of the width and the thickness of the strip over the entire length thereof, respectively at least one time, so that the desired width and thickness of the strip are obtained in the last reduction.

Abstract: The invention relates to a rolling unit having three rollers with axes arranged at 120.degree., wherein the main roller shaft derives its motion from a drive and transmits it to the shafts of the other two rollers through bevel gears. To simplify the assembly and service procedures, as well as to improve the roller adjustment facilities, the main roller is carried on a supporting body which can be removably positioned on the unit casing to allow axial adjustment of the main roller. The respective shaft engages rotatively, but in an axially slidable manner, with a coupling shaft connected to the drive. The supporting body may be attached to the casing radially, thereby it becomes possible to assemble the main shaft, together with the roller, bearings, and gears, and then secure the supporting body on the casing.

Abstract: A rolling mill and method for rolling material having a rectangular, oval or like elongated cross-sectional configuration into rod or wire, has a line of passes of which the first pass is formed by two rollers and the remaining passes are each formed by three rollers, and wherein the first pass deforms the material, whose input cross section has a ratio of the lengths of its major and minor principal axes greater than about 1:2 to an output cross section which is exactly round or a regular polygon, such as square or hexagonal or which deviates from such a geometrical configuration only to an extent such that the ratio of the lengths of the major and minor principal axes of the output cross section does not exceed about 1:2.

Abstract: A rolling mill is provided in which the stands can be angularly displaced about the longitudinal axis of the work material so that the drive shaft slopes upwardly or downwardly from the associated output spindle of the drive transmission. This enables rolls of ideal diameter (D.sub.i) larger or smaller by up to 20 mm than the rated ideal diameter for that stand location to be used. A flexible coupling compensates for the angular misalignment of up to 2.degree. between the drive shaft and the output spindle.

Abstract: A push bench is provided for the production of tube blooms in which the last roll stands of a plurality of roll stands one behind the other in the direction of pushing have radially adjustably supported rolls, said radially adjustably supported rolls being radially adjustable at the beginning of each working cycle with regard to the diameter or diameter tolerance of the mandrel rod being used for that work cycle.

Abstract: A rolling mill roll and method of rolling tubes is provided in which the roll has an annular concave working surface in the outer periphery, said surface having a central annular concave portion of a preselected arc and a pair of side edge annular concave portions on each side of said central portion, said side edge portions having an arc of greater radius than the central portion and thus of lesser curvature than the central portion.

Abstract: Method for manufacturing long bars, round, square or flat, employing multi-tandem type roller dies mechanism in which each roller gap is controlled by the roller gap adjusting mechanism, and apparatus preferably applicable that method. The apparatus is provided with a plurality sets of roller dies, controllers for outputting a respective target roller gap for each roller dies, roller adjusting mechanisms capable of shifting, in accordance with the commanding signals from servo devices based on the output target roller gap, each roller of each set of roller dies symmetrically about the axial line of the die hole formed by the roller dies, roller position sensors for measuring the respective roller gap in order to feed back the measured results to the servo devices, and a propelling mechanism for imparting a deformable blank propelling force.

Abstract: The rollers of a push bench for the production of tubular blooms are axially displaceably journalled on respective spindles so that the rollers are centered by the bloom. For machining the working surfaces of the rollers, the rollers, or their shafts to which they are fixed, can be axially locked in position and the roller shaft has a releasable coupling for coupling the roller shaft to a drive motor or drive shaft, whereby all the rollers can be machined simultaneously without removing them from the stand.

Abstract: A mill stand has a roll housing which mounts chocks provided with cantilevered axles carrying workrolls with at least one axle being connected with a spindle geared to a drive. The spindle of at least one workroll is positioned in direct proximity with the axle which carries this workroll, on the side of its free end. Such mill stand construction makes it possible to effect rolling of difficult-to-form metals and alloys.

Abstract: A continuous mill has a plurality of passes arranged in series and formed by work rolls which are mounted on shafts secured to common chocks accommodated in housings.The chocks provided in the mill are equal in number to the workrolls forming a pass. Each of the chocks has two sides converging at an angle, and the shafts carrying the workrolls are cantilevered to each of said sides. The shafts secured to one side are offset relative to the shafts secured to another side so that the adjacent passes are spaced in closest possible proximity with one another; the angle between the sides of each chocks being equal to the divergence angle of the adjacent passes.

Abstract: There is disclosed a method for rolling an ingot having a substantially trapezoidal cross-section and coming from a continuous casting machine of the wheel-and-belt type, the method comprising initial rolling of the ingot simultaneously on the side corresponding to the minor base of the substantially trapezoidal cross-section and on the edges of the major base of the cross-section to obtain a cross-section having two orthogonal axes of symmetry. The ingot is than rolled by subsequent two-roll stands. There is also disclosed a rolling mill for carrying out the method, comprising a first three-roll stand with the rolls arranged to provide the desired cross-section having two orthogonal axes of symmetry, and with subsequent two-roll stands.

Abstract: Apparatus and method for forming a plurality of round wire strands into rectangular shape and winding the thus formed wires into multiple wire coils. The round wires are drawn from supply spools into a rolling mill for pre-flattening the wires on top and bottom surfaces and then moved in side-by-side arrangement through a second rolling mill for flattening the wires on all four sides to the desired dimensions, after which the rectangular wires are conducted to a multiple coil winding machine.

Abstract: A roll mill stand has a supporting frame which mounts two housings with at least three work rolls being arranged therebetween, the geometric center lines of the rolls being located in a single plane and set one with respect to another to form a pass. The work rolls are mounted each in a respective shell, the latter being hinged upon one of the housings by a pivot secured in the housing parallel to the work roll and connected to the other housing by a screw-down mechanism intended to adjust the radial gap between the work rolls. At least one of the shells is supported by the respective pivot connecting the shell to the housing, the gap between the work rolls being adjustable transversally with respect to the axis of rolling.

Abstract: A device for the cold rolling of narrow flat lands on the cylindrical surface of heat exchanger tubing, just prior to the winding onto the tubing of one or more metal strips for the production of finned tubing, the device having pressure rollers on pressure levers carried by a journalled supporting spindle which rotates with the tubing, and a control sleeve inside the hollow spindle which, under the action of a linear actuator, interrupts the rolling action as desired, while the winding operation continues.

Abstract: A roll mill stand comprises a housing which mounts chocks having secured therein journals carrying work rolls forming a pass, at least one of said work rolls being coupled by means of a splined joint with one end of a spindle, the other end of said spindle being connected by a splined joint to a pinion geared to a drive means. The roll mill stand is provided with an arrangement for axial displacement of the spindle, comprising a motion screw mounted coaxially with the spindle and coupled with its other end, the motion screw carrying a nut with a disk affixed to the end face thereof, the nut being mounted on a hub coupled with the spindle shaft for rotation with respect to said nut, the roll mill stand being additionally provided with a braking mechanism placed on the stationary part of the roll mill stand and cooperating with the disk of said nut, as said nut is being slowed down to disengage the spindle from the work roll.

Abstract: A rolling block for rolling a bar-shaped article having several rolling units mounted on a common frame, each rolling unit having three or more rollers journalled to respective pivotable elements and defining a sizing pass. For replacing the rollers, the pivotable elements can be swung about respective drive shafts from which the rollers are driven via step-up transmissions within the pivotable elements. The pivotable elements can be locked in their operative positions by hydraulically actuable coupling means and all the pivotable elements with the respective rollers therein can be fine-adjusted in the radial direction of the rollers.

Abstract: A roll-through cold forming apparatus adapted to form simultaneously a plurality of either external or internal straight spline or gear type teeth on a cylindrical workpiece carried on a movable ram. In one embodiment the apparatus includes a plurality of radially disposed pivotally mounted teeth forming blades which are disposed around the axis of movement of a linearly movable ram, whereby when the ram moves in one direction past the teeth forming blades, the blades are engaged by an interference contact with the workpiece carried on the ram, and the teeth forming blades are moved over the external surface of the workpiece in a rolling contact action so as to displace the material of the workpiece between each tooth forming edge of each of the blades. The material on the external surface of the workpiece is formed around the radius of each of the tooth forming edges of each of the forming blades on a line with the configuration of each tooth forming edge.

Abstract: A profile plano-type knurling machine relates to metal pressure shaping machinery. It is more expedient to use the present invention for working splined shafts, polygonal parts and gears. In the present knurling machine a device for moving knurl rollers in the radial direction relative to the centers has tapered elements kinematically associated with the knurl rollers and pressure members whereas only one pressure member intended to provide the radial feed of the knurl rollers is installed on the fixed support member at the side of the bases of the tapered elements coaxially to the centers and adapted for actuating simultaneously all the tapered elements through an intermediate part located between said pressure member and the bases of the tapered elements. This technical solution provides for a considerable improvement of the machine efficiency and its reliability in operation as well as processing accuracy of the work pieces being machined.

Abstract: A metal extrusion process with high reduction wherein a metal blank is extruded from a container through an opening which is formed by a plurality of work rolls. The metal blank is guided to the opening from the outlet of the container by causing the metal blank to adapt to the shape of the opening by means of a forming die so that the metal blank does not overfill the opening. This extrusion process is capable of forming the metal blank into a product having the desired cross section with high elongation in one pass and also the radius of curvature of the corner portion of the product can be freely adjusted.

Abstract: There is disclosed a rolling assembly for the initial rolling passes of a metal ingot coming from a continuous casting machine and having substantially triangular or trapezial cross-section with mutually proportional sides. The rolling assembly comprises at least a first rolling unit with three rolls each having the same geometrical shape defining a substantially circular passage. This shape is such that the metal ingot entering the rolling unit comes into contact along a preponderal part of its peripheral contour with the rolls and that the forces acting on the metal ingot have at each point of contact a resultant substantially directed towards the center of the metal ingot.

Abstract: A mill using a movable stand with shaped rolls featuring a working portion, with the reversible rotation of the rolls being limited by an angle encompassing the working roll portion. The rolling of an ingot being cast is effected by carrying the stand with the rotating rolls "forward" and "backward".

Abstract: The invention relates to mechanical engineering.The proposed machine comprises parallel stationary crossbars rigidly interconnected by slides and carrying centers for positioning a workpiece. Mounted on the slides, between the stationary crossbars, and adapted for reciprocating motion along the centers' axis is a movable crossbar with a knurling head in whose housing there are provided radial slots, wherein there are installed sliders with knurls, said sliders being movable in said slots by a device comprising self-braking wedges installed in pairs in each radial slot and stops interacting with said wedges, which stops are mounted on the stationary crossbars and being adapted for reciprocating motion.

Abstract: The invention relates to a rolling arrangement for rolling mills including means for continuously centering the rolls with respect to the product being rolled and for adjusting the pass defined by the rolls. A roll is mounted with its shaft on a cylindrical support which is displaceable within the frame of the rolling unit and comprises an outer threaded portion engaging with an annular threaded element whose rotation causes axial displacement of the support and of the shaft and the roll, thus allowing continuous centering thereof. Setting shims are provided between a cover of the structure supporting the roll and the frame of the rolling unit for adjustment of the pass defined by the rolls. Adjustment of the clearance of the two bearings supporting the roll shaft is obtainable by providing each of the outer rings of the bearings with the outer threaded portion and the threaded annular element and separately actuating the same.

Abstract: A die for performing the ironing process in the manufacture of drawn and ironed food or beverage cans. A number of rollers are mounted in a carriage to form a ring of suitable inner diameter to perform the desired amount of reduction in the thickness of a can mounted on a mating punch. Each roller has a concave peripheral surface which forms a small segment of the ring. The rollers have conical end surfaces which butt together closely at the inner diameter. On the outer side of the ring, the rollers bear on backer members. In one form of the invention the backer members are stationary strips and the carriage moves in the same direction as the can when the can passes through the die. In another form the carriage is stationary and the backer strips move in the opposite direction. In another form, the backer members are additional rollers mounted on bearings. In all cases the friction between the rollers and the can and the rollers and the backer members is primarily rolling friction.