Abstract: A single stage two plane coiled reinforcing bar stock straightener adapted to straighten an infeed of coiled reinforcing bar in both the horizontal and vertical planes for providing the straightened delivery of coil fed reinforcing bar material to processing and converting machinery.

Abstract: A rolling mill for flat products characterized by a roll assembly including a pair of work-rolls confronted reciprocally, and support-rolls divided by not less than three partitions in a roll axiswise direction which are provided, independently, with load detector equipment; crown and flatness of the products can be estimated precisely and regulated without delay using the rolling mill.

Abstract: A roller width adjusting device for a divided molding roller has a hollow main shaft journalled at each end to side bearings so as to be rotatable around a rotary axis thereof. The hollow main shaft is connected at one end to a driving source for rotating the main shaft around the rotary axis. A pair of hollow cylindrical roller holders are disposed on an outer periphery of intermediate portions of the main shaft so as to be slidable along the rotary axis of the main shaft. The roller holders may be fixed in any position along the rotary axis by a holding device. A pair of divided type molding rollers are attached to the roller holders, respectively. An adjusting shaft is rotatably disposed in the hollow shaft along its rotary axis. Each end of the adjusting shaft has a screw thread with opposed screw directions. One end of the adjusting shaft has a rotatable handle.

Abstract: Herein disclosed is an endless hot rolling method using a hot strip mill substantially composed of a roughing mill and a finishing mill having a roll bender and a roll shifter to continuously roll sequentially joined different rolling materials. The method comprises the steps of: calculating a roll shift range in an axial direction for each rolling material so as to provide a desired crown; determining a rolling sequence so as to obtain a common roll shift range for each pair of neighboring rolling materials; connecting a preceding material at the tail end thereof to the head end of the succeeding material, between the roughing mill and the finishing mill; shifting the rolls during transition from the preceding material to the succeeding material so that the roll position corresponding to the joint of the two materials is within a common roll shift range for the materials; and changing the roll bending load in accordance with the roll shift pattern so as to achieve the desired crown of each material.

Abstract: An edging roll for rolling a shape having a web and flanges, including a main shaft having an eccentric shaft portion; an eccentric sleeve having an eccentric portion facing the eccentric shaft portion of the main shaft; web-restricting rollers attached to the eccentric shaft portion of the main shaft and the eccentric portion of the eccentric sleeve through bearings; flange rolling rolls attached to the main shaft and the eccentric sleeve through bearings; a flange rolling roll drive means having a pair of gear transmission means, a connection shaft, and a rotation drive means; a roll height adjustment means for integrally rotating the main shaft and the eccentric sleeve; a roll-width adjustment means for synchronously and mutually moving the main shaft and the eccentric sleeve; and further a roll width/height adjustment synchronizing means and a pair of guide rings may also be disposed.

Abstract: A lubricant is supplied from headers of lubricant supply units onto surfaces of back-up rolls at locations spaced from contact positions between a pair of work rolls and a pair of back-up rolls. The headers each include a lubricant spray nozzle for spraying the lubricant under a pressure not lower than 3 kg/cm.sup.2, a header cover for confining the lubricant sprayed from the lubricant spray nozzle, an oil return line for returning the surplus lubricant, and seal members made of flexible material such as rubber. The work rolls are provided with water wiping plates, and the back-up rolls are also provided with water wiping plates. In a work rolls crossing type mill thus arranged, water films of cooling water deposited on the roll surfaces are removed to prevent the cooling water from mixing into the lubricant. Even if the water films are not totally removed, it is possible to surely plate out the lubricant for reliably lubricating between the work rolls and the back-up rolls.

Abstract: An apparatus for axially adjusting a bottom work roll of a plug mill to align the grooves of the top and bottom rolls. The apparatus includes a bottom roll chock having a pair of laterally extending members, each carrying a transverse, tapered wing shaped end portion. A pair of spaced apart adjustment assemblies are mounted on the plug mill housing adjacent the lower roll chock. A pair of tapered wedges is carried by each of the adjustment assemblies. The wedges are adapted to slideably engage and move the tapered wing shaped portions of the lower roll chock. A segmented tie bar having a manually rotatable turnbuckle is rigidly attached to lever arms carried by the adjustment assemblies.

Abstract: In chatter monitoring of twin drives of roll stands, vibrations of an upper drive and a lower drive are detected and monitored to determine whether a predetermined amplitude has been exceeded. If the amplitude has been exceeded, a chatter detection signal is generated. In order to prevent the chatter detection signal from being generated erroneously due to an operational pass vibrations, the frequencies of the vibrations of the upper drive and the lower drive are monitored for identity; when the frequencies are identical, the chatter detection signal is suppressed.

Abstract: A system for controlling axial shifting of working rolls on a rolling mill is provided, and more particularly, a control system method which includes monitoring sensors for the rolling mill, processing information and calculating the non-all statical friction condition for the contact surfaces of the rolls on a central processing unit, and implementing the axial shifting of the working rolls on a hydraulic system. The purposes of roll shifting are primarily to control the strip shape and crown by improving the bending roll effect, to reduce the edge drop of the strip, and to maintain the uniform wear and thermal crown of the working rolls. In order to minimize or eliminate the scarring and scotch marks caused by axial shifting of the rolls, the contact zone must be kept in a non-all statical friction state. The non-all statical friction condition may be met by controlling the shifting velocity.

Abstract: A pair of edging rolls for edging the flange edges of symmetrical steel sections, particularly I-girders. Each edging roll has a barrel engaging in the inner contour of the steel section and guiding the section, and two edging paths adjoining the barrel on either side and extending outwardly in a conical shape for the flange edges of the section. The edging paths are arranged at the outer circumference of bushings which are guided so as to be displaceable coaxially at both sides of the barrel on the roll body. The bushings have end faces which face one another and engage in annular recesses of the barrel.

Abstract: A roll forming device receives a continuous elongated flat sheet of metal to form selected profiles along at least one longitudinal margin thereof. The roll forming device comprises a drive assembly, located within the apparatus frame which engages the elongated sheet proximate to the entryway and advances the sheet in a downstream direction discharge it at an exit. Preferably, at least one guide bar is supported by the frame which also engages the longitudinal margin of the sheet as it is advanced downstream and bends it into a trough-shaped cross-section. The frame houses at least one forming station having a coacting pair of first and second forming rollers journaled for rotation about respective axes. Some of the forming stations may include a plurality of pairs of coacting first and second forming rollers, at least some of which are mounted to be adjustably positioned toward and apart from one another to accommodate varying widths of sheet metal.

Abstract: A method of rolling an elongated workpiece in the form of a sheet or strip and of reducing edge drop during rolling comprising passing the workpiece through at least one pair of opposed work rolls which comprise an arbor and a hollow sleeve shrink-fitted over the arbor and having end portions defining, between the arbor and sleeve, a cavity providing a self-compensating flexible roll end portion which is placed over and extends beyond a longitudinal edge of the workpiece during rolling. Preferably, the shrink-fitted portion is provided with maximum radial stress at the middle thereof and decreasing toward the ends of the shrink-fitted zone. The work rolls may be backed up with self-compensating backup rolls to further improve uniformity of the rolled workpiece by reducing crown variation thereof. Positioning of the rolls is accomplished by axial shifting.

Abstract: A roller leveller, in particular, for beams with a large web depth, includes a carrier shaft on which lower levelling rollers are mounted in a cantilever fashion and which is arranged in a bearing housing with a possibility of dual axial displacement. The bearing housing rests on lifting elements and is displaceable up and down in vertical guides of a horizontally displaceable carrier slide. The bearing housing is pivotably arranged about an inclination adjustment axis that extends transverse to the carrier shaft axis.

Abstract: The present invention provides a rolling roller for rolling steel sections and that can have the roller width changed while not having a drive mechanism for changing the roller width provided to the rolling roller itself, thereby having a simple structure that facilitates exchange, and also provides a rolling mill suitable for use with such a rolling roller. The rolling roller has rolling wheels on a roller shaft and a sleeve and that engage the sleeve with respect to the roller shaft. In addition, the sleeve and the roller shaft are tightened and engaged at a place other than the inner side of the roller wheel and oil injection to the place of tightening and engagement is performed via hydraulic fluid supply paths formed inside the roller shaft.

Abstract: A roll forming machine is used for forming material, typically metal strip into various shapes. The machines comprise pairs of forming rolls which are spaced apart along an axis. The profile of the roll pairs progressively change along the axis, so that respective pairs of rolls effect different degrees of folding to material passing between them. As a result, the machine is capable of effecting progressive folding of material fed between the pairs of rolls along this axis. In the present machines, versatility of the machines is improved by using forming rolls each comprising a plurality of roll section elements. The roll section elements are mounted so as to be independently freely revolvable about the axis of the roll and additionally they may be driven so that they are capable of assisting both in folding/forming roll material and in transmitting drive thereto.

Abstract: A method for controlling edge drop in a cold rolling operation adaptable to tandem cold rolling mill stands by shifting a pair of vertically disposed single-end-tapered work rolls along the widthwise direction of a steel strip. The work rolls have tapered end portions that are disposed on the two widthwise ends of the steel strip.

Abstract: A mill for producing a continuous strip comprising a pair of work rollers having a constant diameter over the work length, at least one local back-up roller having two rotatable contact surface sections, each provided to have a back-up effect on a corresponding work roller in a direct manner or an indirect manner. Each contact surface section is axially movable relative to the corresponding work roller. An overall back-up roller having a constant diameter over the work length may be provided between the local back-up roller and the work roller. Means for bending each work roller and/or each intermediate roller at the opposite neck portions thereof with a corresponding pair of the contact surface sections acting as fulcrums thereagainst. The mill is operated, while an axial position of each contact surface section is adjusted, and a hydraulic fluid supplied into each roller bending means forming a hydraulic cylinder is controlled in response to a profile of the strip.

Abstract: An improved roll forming machine has a machine base, a mounting plate affixed to said machine base, a fixed base plate mounted to said mounting plate, and a movable base plate laterally movable with respect to said fixed base plate. A main block is mounted to said fixed base plate in which are journalled a first plurality of pairs of roller receiving shafts. Journalled to upright stands affixed to the movable base plate are a second or equal plurality of axially aligned roller receiving sleeves which fit over reduced diameter portions of the shafts and are rotated thereby. Movement of the movable base plate causes the sleeves to slide laterally on the shafts and change the width of the workpiece produced by the roll forming machine.

Abstract: A 4-high-rolling mill includes a pair of upper and lower works, a pair of upper and lower backup rolls supporting the upper and lower work rolls, respectively, a roll bending device for applying a bending force to the upper and lower work rolls, and a roll shift device for shifting the upper and lower work rolls in an axial direction of the work rolls. Each of the upper and lower work rolls has a curved initial crown portion formed on one side portion of a barrel of the work roll which is not less than a half of the length of the work roll barrel, and a substantially cylindrical initial crown portion formed on the remainder of the work roll barrel. Teh curve of the curved initial crown portion approximates to a curve represented by the formula Y=X.sup.n, (n.gtoreq.1.

Abstract: A progressive rollformer machine is readily adjustable, without removal of rolls or use of spacers, to produce sheet metal workpiece margin flanges of variable depth. The machine includes a gear train housing having perpendicularly extending spindle shafts and idler gear shafts, and two forming roll housing sections, with their rolls mounted outboard. One of these, conventionally fixed relative to the gear train housing, provides one reference line of forming. The other forming roll housing section provides a second reference line of forming--it may be positioned at a variable distance from the gear train housing, at a spacing adjustable by a screw drive. Tracking throughout all roll stations is made possible by using the adjustable-position forming roll housing first in line of flow, with supplemental tracking rolls mounted onto the ends of the spindle shafts.

Abstract: In the rolling of metal strip, a detector roll is used to determine variations along the width of the strip and to make sure that one lateral edge of the strip takes up a predetermined position with an individual roller on the detector roll, either the strip is moved sideways with respect to the roll or the roll is moved in the direction of its axis of rotation.

Abstract: A rolling apparatus having a width adjustment function includes a horizontal sleeve roll divided into two rolls in the axial direction and shrink-fitted over an arbor. Internal threads are formed in the inner circumference of one of the divided sleeve rolls. The arbor includes fluid passages for loading a fluid under high pressure between the sleeve roll and the arbor. A width-adjusting sleeve is movably mounted over the axial end portion of the arbor and external threads for formed in the inner side portion of the width-adjusting sleeve. The external threads of the width-adjusting sleeve are threadedly engaged with the internal threads of the sleeve roll. A clutch mechanism fixes the width-adjusting sleeve in a fixed position when a roll width adjustment is performed.

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 invention relates to the positioning of rolls to ensure the correct alignment of rolling grooves in the rolls with each other and with the pass line of the product. Hitherto to ensure correct alignment of rolling grooves, repeated trial runs and roll adjustment have been effected until rolling is correct, and when production can recommence. The invention eliminates this problem by predetermining the distances of grooves in a first reference and a second roll from a fixed datum on a base for the roll stand, preferably in a prior calibration stage, which information is stored preferably in a microprocessor, the microprocessor subsequently controlling drive means to move the rolls to align co-operating rolling grooves and align the rolling grooves with the pass line, or to move the second roll with reference to the reference roll to align co-operating rolling grooves, and move roll guides to align the pass line with the rolling grooves.

Abstract: Means and method for cold rolling metal strip characterized by edge drop. The invention contemplates the use in a cold rolling mill of at least one roll having a base profile provided with a flared component adjacent to at least one end of the roll. The base profile can be crowned, cylindrical, partly crowned and partly cylindrical, or partly cylindrical and partly tapered. The roll or rolls can be work rolls, intermediate rolls or the like. Rolls provided with a flared component at one end only can be arranged in skew-symmetry and shifted independently in an axial direction to adjust the work roll gap profile. The roll or rolls of the present invention and the method employing them achieve uniform elongation of the metal strip, minimizing quarter buckle. The at least one flared portion can be truncated at a point adjacent to the edge of the strip to be rolled.

Abstract: Method for orthogonal adjustment of straightened bars and an orthogonal adjustment unit located downstream of a bar straightening machine, whereby the bars may be of a rolled, drawn or extruded type or be obtained with a forming machine and may have any round, oval, square, rectangular or polygonal, etc. section and be solid or hollow. A desired variable deformation opposed to the curved development determined by the last three staggered rolls (30-31-131) of a straightening assembly (11) is imparted to the bar (14-114) after the straightening and immediately downstream of the straightening assembly (11) by the orthogonal adjustment unit. The orthogonal adjustment unit includes at least one adjustment roll (13) which imparts deformation to the bar (14-114) by acting thereon radially in a desired position, within an angle of 360.degree., lying on a plane normal tothe nominal axis of the straightening machine working and having as its axis that nominal axis.

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: The disclosure relates to a window layout and a work roll chock design of a four-high rolling mill stand, including two spaced upright housing posts having windows, in which the housing ports have roll bending devices for the work rolls and the chocks of the work rolls are mounted so as to be horizontally and vertically disposed relative to inner window chock support members, which in turn are connected to outer window blocks affixed to the housings. To effect a roll change of both work rolls as a unit with a roll change device arranged in front of the operator side window, the work roll chocks are provided with roll separator units for holding the rolls apart and stabilizing the unit and a locking device for preventing relative horizontal movement of the work rolls during a roll change.

Abstract: A method and an arrangement for automatically aligning horizontal rolls and vertical rolls in a universal rolling mill stand after the stand has been changed to new types of sections in a rolling mill train. The axial geometric configuration of the vertical rolls in the stand serve as a fixed reference value and the horizontal rolls are displaced radially and axially into roll positions which are measured by actual position indicators and from which the geometric roll gap center and the geometric roll center in the stand are determined. For taking into consideration the spring characteristic constants of the stand, the radial spring characteristic for the two horizontal rolls is determined together, the radial spring characteristic for each vertical roll is determined separately and the axial spring characteristic of one of the horizontal rolls is determined separately in accordance with one of the two axial directions.

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: Adjustable width rolls are preferably used for rolling, for example, insides of H-beams of various sizes without exchanging horizontal rolls of a rolling mill. Each of the adjustable width rolls includes a roll shaft rotatably and axially movably supported relative to the rolling mill, and axially adjustable sleeve roll fixed to the roll shaft, and an axially stationary sleeve roll mounted on the roll shaft to be axially slidable but against rotatable relatively to the roll shaft. The adjustable width roll further includes an axially adjustable roll fixedly supported by the axially adjustable sleeve roll to form substantially one half of a rolling barrel of the adjustable width roll, an axially stationary roll fixedly supported by the axially stationary sleeve roll to form substantially the remaining half of the rolling barrel of the adjustable width roll, and a driving mechanism for driving the roll shaft in axial directions of the roll shaft.

Abstract: A roll arrangement for the non-deforming treatment of moving web-type or strip-type products. The arrangement includes at least two rotatable rolls which are adjustable radially relative to each other. The arrangement is used, for example, for drying one or both surfaces of the product. The rolls are axially adjustable in opposite direction and each roll has slightly S-shaped or bottle-shaped contour over the entire length of the roll body, in such a way that the contours of two rolls arranged on both sides of a roll gap complement each other only in a certain relative axial position of these rolls. In other axial positions of the rolls, the roll gap becomes narrower either in the center or at the ends of the rolls, so that a uniform pressing action or other uniform non-deforming treatment of the product is possible over the entire width of the product independently of the bending of the rolls and/or deviations from the plane-parallelism of the surfaces of the product.

Abstract: A roll stand includes a generally stationary frame, a roll centered on an axis, and a radial-thrust bearing having an outer race fixed in the frame, an inner race fixed on the roll, and a plurality of rollers radially engaging the races and supporting the roll in the frame for rotation about the axis. The rollers are axially shiftable along one of the races. An axial-thrust bearing has outer and inner faces one of which is axially fixed to the roll and the other of which is axially movable in the frame and rollers between the respective outer and inner races. An actuator is braced axially between the roll and the frame for axially shifting the roll in the frame and thereby axially shifting the other of the radial-bearing races relative to the respective rollers and the one radial-bearing race.

Abstract: The apparatus transmits a high shifting force reliably and has a simple and rapid assembly. The axial shifting occurs by a clamping device which is in releasable working connection with the roll stub shaft of a rolling-mill roll or the rotating shaft. The disengageable clamping junction is formed between the clamping device and roll stub shaft shaped to fit together. Especially the clamping device is formed as a compact unit comprising a clamping head with at least one axially precompressed compressible spring which acts on a plurality of clamping disks working as a clamping body. The clamping disks force a radially elastic clamping sleeve to grip the roll stub shaft. The clamping disks are releasable from a clamped position by a hydraulic pressurized medium against the action of the compressible spring. The clamping disks are supported axially on the one side on a portion of a housing of the clamping head and on the other side by an axially slidable hollow cylinder acted on by the compressible spring.

Abstract: Upper and lower eccentric sleeves 2aU and 2aB with respective worm wheels are provided as a pair in respective drive side and operating side housings 1b and 1a and support the necks of respective upper and lower rolls 5U an 5B via the bearings. These pairs of eccentric sleeves are synchronically rotated in respect to one another via a worm mechanism so as to effect the draft adjustment.

Abstract: The bending and balancing mechanism for axially shiftable rolls of a roll stand, especially the working rolls of a four-high roll stand, comprises a guiding block rigidly mounted in a stand window of each roll stand and roll supporting members supported horizontally slidable adjacent both ends of the rolls on an upper and/or lower lifting housing guided vertically on the guiding block. The roll bending forces are transmittable from bending cylinders to the roll supporting members and at least one bending cylinder, advantageously hydraulic cylinder, engages on the upper and lower lifting housing, this bending cylinder being supported on a stationary guiding block. Because of this latter structure the bending and balancing forces are better transmitted to the working or other rolls.

Abstract: A rolling mill stand with at least one manipulator for axially moving the rolls, particularly the work rolls, of the rolling mill stand. The rolls are supported and secured in chocks. The chocks are guided in the housings of the rolling mill stand so as to be vertically slidable in the direction of the rolling force. The chocks include pushing blocks which guide horizontally in the direction of the rolling axes. The manipulators supported by the housings act on the pushing blocks from the operator side. The manipulator is connected to the pushing block through a gear arrangement for transmitting the adjusting distance of the manipulator. The gear arrangement operates without slipping.

Abstract: During operation of a rolling mill the roll gap and roll shape change, because of the influence of heat, bending of the working rolls or the roll mounting, wear and the like, and must be compensated and/or balanced to make a planar product, particularly a planar rolled sheet or strip. To compensate for these undesirable disadvantageous influences on the operation of the rolling mill frequent axial sliding of the rolls with respect to each other and/or positioning of the working rolls transverse to the plane of the rolled material is required. According to our invention these undesirable influences are prevented in a particularly simple way and/or are compensated when the contours of the rolls in the initial state and/or unloaded state of the rolling mill are such that the sum of the roll body diameters at each relative axial position of the rolls varies axially from a constant value.

Abstract: An arrangement for axially displacing rolls in rolling mill stands. The rolls of the rolling mill stands are supported in roll supports or chocks which are adjustably and slidably guided in the roll housings of the stand. The rolls are displaceable by means of hydraulic piston-cylinder units which are supported relative to the roll housing and are connected to the supports of the bearings of the roll. The bearings of the rolls are axially slidable within the roll supports and a sliding guide is arranged on the roll support for a sliding carriage which supports a coupling device for a roll neck. The hydraulic piston-cylinder units are articulated to the sliding carriage. The coupling device includes drive members which are slidable in radial guides and can be placed in an annular groove of the roll neck. The coupling device is supported by the neck bushing of the deep-groove-type radial roller bearing which is immovably arranged in the sliding carriage.

Abstract: A rolling mill with axially shiftable rolls, comprising, inside a supporting stand, at least two working rolls with bending jacks bearing in the direction of the bending force on a T-shaped sliding piece comprising a part forming a foot engaging into a housing machined in the block containing the bending jacks, to allow guidance in a translational movement in the vertical plane, and the chocks of the working rolls bearing on the pieces and thereby receiving the bending force can also shift on the pieces by sliding when the rolls are to be shifted axially.

Abstract: Two parallel cylindrical rolls in a punching, stamping, printing, smoothing or like machine for running webs of paper or the like carry pairs of hardened bearing rings which have complementary conical surfaces with the conical surfaces of rings for one of the rolls tapering in one direction and with the conical surfaces of rings for the other roll tapering in the opposite direction but at the same angle. This ensures that the rings for one of the rolls are in linear contact with the rings for the other roll. One of the rolls is movable radially of the other roll to change the pressure upon the web which is running through the nip of the rolls, and one of the rolls is movable axially of the other roll to compensate for wear upon the conical surfaces of the bearing rings. All such adjustments can be carried out while the machine employing the rolls is in use.

Abstract: A pair of tapered work rolls are arranged to confront each other and the work rolls are shifted to locate the side edges of a material to be rolled at the tapered portions of the work rolls, by adding the quantity of the movement of the taper-initiating point by wearing of the rolls to the shift quantity of the rolls, and rolling is carried out while maintaining an effective adjustment of the crown quantity (effective shift quantity). Therefore, defects such as edge drop and high spot can be effectively prevented and the crown quantity can be freely controlled, and accordingly, a desired crown quantity can be easily obtained.

Abstract: A roll stand comprises a frame, a pair of upper guide members spaced apart on the frame along an upper axis and a pair of lower guide members spaced apart on the frame along a lower axis parallel to the upper axis. Guide formations between the members and the frame prevent the members from moving axially relative to the frame and permit the members to move vertically in the frame. Respective upper and lower journal blocks on the members are prevented from moving vertically relative to the respective members by respective guide formations between the blocks and the members but can move axially on the members. An upper roller is carried between the upper journal blocks, axially coupled thereto, and rotatable thereon about the upper axis and a lower roller is carried between the lower journal blocks, axially coupled thereto, and rotatable thereon about the lower axis.

Abstract: The apparatus for axially slidably positioning a plurality of roll bearing supports guided in the housiing windows of the stands of a mill comprises a plurality of guide members each mounted in at least one rigid supporting frame and each pivotable about an axle oriented transversely to the roll axle direction, at least two traversing carriages guided in at least two of the guide members which are each drivable by a drive motor and coupling means for releasable engagement or linkage of each of the traversing carriages with an associated roll bearing support. One of the supporting frames of a supporting frame pair with frame planes arranged substantially perpendicular to the rolling plane and substantially parallel to each other is mounted on each stand of a stand pair in the rolling mill and the coupling means of the traversing carriages of one and another of the guide members are connectable with a side of one of the roll bearing supports facing that traversing carriage or supporting frame.

Abstract: A roll forming apparatus disclosed has a series of roll forming stations with a first group of stations having rollers that are adjustable to different width settings using the same rollers to form more than one width of ogee type gutter. A cutter uses interchangeable cutting blades and die plates for shearing different gutter sizes to selected lengths. The cutter uses a rotary drive member to move the blade in a path having a relatively short stroke that performs a scissor-like cutting action to successively cut the walls of the formed gutters for each revolution of the rotary drive member. A crank member for manually moving the cutter blade is collapsible and the crank handle is demountable for transport purposes.

Abstract: The invention relates to a rolling mill of the 4 Hi Mae West type having cylinders for axially shifting the work rolls for a schedule free rolling operation, work roll balance cylinders are mounted in the Mae West blocks and as a result assume a varying off set axially relation with the work roll bearings, a control for the balance cylinders to compensate for the effect the offset conditions would otherwise have on the forces of the balance cylinders to maintain the forces at a predetermined value.

Abstract: An installation for levelling a metal strip (3) by advancing it along an undulating path in a levelling stand (10) associated with a plurality of rolls (2, 15, 16, 18) with narrowed ends which may be displaced axially in opposite directions. Narrowed sections (25) are provided at opposite ends of two active levelling rolls (23) (24), and the levelling unit (4) (5) formed by each active roll and associated carrying rollers is mounted on two horizontal beams sliding vertically and associated with jacks (39) (64) for adjusting the axial and vertical position of each levelling unit (4) (5).

Abstract: A set of two saw benching rolls. Each roll has a surface divided into two sections. One section is in the form of a convex surface and the other is in the form of a concave surface. The rolls are mounted in an opposed relationship and are operable to apply pressure to a saw placed there between. By moving the two rolls axially and relative to one another in the various positions, the saw may be "leveled up" or "leveled down" to remove discontinuities. The benching rolls may also be used in the conventional manner to tension or to shear the saw.

Abstract: A rolling mill stand with work rolls which are supported as necessary by back-up rolls or by intermediate and back-up rolls. The rolls are axially slidable relative to each other. The bodies of the rolls are provided with alternatingly concavely and convexly shaped contours in such a way that the rolls supplement each other in at least one axial position of the rolls so that no gap exists between the rolls. Corrections of the roll gap between a pair of rolls can be carried out by relative axial displacement of the rolls. The contours of the rolls have in the neutral position thereof, in addition to a maximum inclination in the middle, maximum inclinations of the circumferential lines on both sides of the middle of the circumferential surfaces of the rolls in longitudinal direction of the rolls in which roll gap profile changes are to be effected.

Abstract: A tandem rolling mill is operated such that roll stands of an upstream stage of the mill adjacent to a strip inlet thereof are positioned relative to each other to effect a strip crown control or an edge drop control, while roll stands of a downstream stage of the mill adjacent to a strip outlet thereof are operated to axially shift the downstream stage work rolls cyclically to distribute roll wear and thermal crown in the axial direction thereof.