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 rolling stand with tie-rods, having extremely high strength to axial stresses, which includes a stand base supporting at least two rolling rolls supported by carriers which can be vertically moved in order to be approached or moved away from each other by means of four vertical tie-rods having screw-threaded portions. The screw-threaded portions are provided on opposite sides of at least one pair of support feet arranged between the stand base and the carriers which support and contain a central smooth portion of the tie-rods. A contoured portion extends from at least one of the support feet upwards and downwards in a parallel direction to the tie-rods. The contoured portion houses and guides a vertical rib protruding outwards from the carriers. Both contoured portion and the vertical rib engage, on mutually opposite surfaces, freely removable adjustment/sliding elements.

Abstract: A straightening apparatus with a plurality of rotatable straightening rollers arranged in two parallel planes. The axles of the rollers are supported in cassettes arranged in a housing holder, whereby one of the cassettes or the cassettes of one plane or also of both planes are adjustably arranged by means of an adjusting device. Each cassette has a housing in the form of a hollow cylinder and is exchangeably arranged in fitted bores. Preferably, the axial forces transmitted from the straightening roller to the axle are absorbed by a ball bearing, and the radial forces by a pin bearing. The ball raceway for the ball bearing is made directly in the hollow cylindrical housing and axle, and the pin bearing is arranged directly between the housing and the axle.

Abstract: A roll assembly comprising a rotatable roll (1 in FIG. 2) and a second roll (2 in FIG. 2) cooperating therewith, in which a pressing element (17) to effect displacement between the rolls along a pressure plane of the roll assembly is located in one of the rolls (1,2) and in which both rolls are supported at either end by respective support members (5,6). Prior to operation of the roll assembly, dumbbell-like shaped connecting parts (7) installed in corresponding cut-outs (9) in the support members (5,6) are tensioned and thereby securely form-locked by actuating the pressing element (17). Locking action is released by subsequent deactivation of the pressing element (17) after which the connecting parts (7) can be withdrawn. Two principal advantages of this arrangement, are the compacter construction, enabled by the fact that the frame no longer bears the pressing forces of the roll assembly, and the ease and speed with which components such as rolls, roll jackets or felt belts can be changed.

Abstract: A press includes at least two press units supported by respective bearing brackets. The bearing brackets are coupled together by releasable tension rods which transmit a pressing force. When the two press units are not transmitting a pressing force in a pressing plane, the tension rods are prestressed at a maximum of a fraction of the maximum pressing force. One of the bearing brackets is movable relative to the other bearing bracket along the pressing plane. The bearing brackets are guided by a pair of guide surfaces disposed parallel to the press plane.

Abstract: In a rolling mill comprising upper and lower work rolls crossed each other to perform strip crown control, a straight line connecting the center of an operation side screwdown screw and the center of a drive side screwdown screw is inclined relative to a line perpendicular to the rolling direction. A cross angle .theta. to be controlled is changed in opposite plus and minus directions about the straight line connecting both the screwdown centers. A large extent of strip crown control can be achieved with a smaller cross deviation than usual in the prior art, thereby permitting omission of an equalizer beam. Further, change in the extent by which strip crown is varied upon control with respect to the cross angle becomes substantially linear and hence control is more easily conducted. Since the cross angle 2.theta. between the two work rolls is larger than 2.degree., the transition temperature is not changed and uniformity in quality can be ensured.

Abstract: An adjustable elevator rail repair device (14) is provided with a means for forcing raised damaged areas (18) of an elevator rail (10) back into the corresponding depressions (20) of the rail surface (9). The forcing means comprises a roller (24) rotatably mounted within a wedge (22), adjustably positioned in a housing (16). A method is disclosed for repairing the damaged rail (10) comprising a calculating step to determine the amount of adjustment necessary for the rail repair device (14).

Abstract: A rolling stand includes a roller-carrier substantially in the form of a ring-shaped body having the rollers journalled on its interior; the roller-carrier is slidable along a longitudinal rolling axis L between an operative position occupied during the rolling process, where it is locked inside an outer structure of the rolling stand, and a non-operative position where it is removed from the structure. Provided within the rolling stand are guide means for guiding the roller-carrier movement along the axis L and means of locking the roller-carrier in the operative position.

Abstract: The axes of a first press roll (1) and of a second press roll (3) lie in a press plane (E). Each of the press rolls has a respective journal (2, 4). The first press roll is supported in a first bearing bracket (5). The second press roll rests in a second bearing bracket (6) which is coupled, by means of flexurally soft tie-bar groups (7a, 7b . . . , 8a, 8b . . . ), to the first bearing bracket (5). In the unloaded condition of the roll press, the second bearing bracket (6) rests on the first bearing bracket (5). In the loaded condition, however, a clearance (p) is established between the bearing brackets (5, 6), which permits the bearing brackets (5, 6) to be displaceable relative to each other in the axial direction of the press rolls.

Abstract: The axes of a first press roll (1) and of a second press roll (3) lie in a press plane (E). Each of the press rolls has a journal pin (2) and (4) respectively. The first press roll is supported in a first bearing pedestal (5). The second press roll rests in a second bearing pedestal (6) which is coupled to the first bearing pedestal (5) by utilizing flexurally soft tension bars (7, 8). In the unloaded condition of the roll press, the second bearing pedestal (6) rests on the first bearing pedestal (5). In the loaded condition, play (p) is established between the bearing pedestals (5 and 6) so that the bearing pedestals (5 and 6) are displaceable axially relative to each other.

Abstract: A cross-rolling mill has upper and lower work rolls which can be made to cross one another together with their respective backup rolls by moving upper and lower roll chocks in pass lines opposite to each other with upper and lower cross heads. Upper and lower gradient portions are formed at opposite inclinations at side faces of the upper cross head and the lower cross head, respectively. Wedges having upper and lower oppositely inclined surfaces slidably engage the gradient portions of the upper and lower cross heads. The upper and lower cross heads can thus be moved in opposite pass line direction by moving the inclined surfaces of the wedges upward and downward.

Abstract: A method and apparatus for aligning both upper and lower horizontal rolls in a roll stand. More particularly, it relates to a roll stand having horizontal rolls with electromechanical and hydraulic adjustments of the upper roll, and electromechanical adjustment of the lower roll, as well as position sensors associated with the adjustments. The method allows for the automatic adjusting and centering or aligning of the upper and lower horizontal rolls in a such a roll stand.

Abstract: A high pressure roller press for interparticle crushing and particularly a bearing support for one of the rolls having force means for the bearing housings urging the roll to obtain high pressure capable of interparticle crushing in the nip and a support bearing for one end of the roll having radial arms extending above and below the nip and guided in a slide permitting movement toward or away from the nip with a stepped bearing at one end of the roll with one bearing being a thrust bearing preventing axial movement and the other end of the roll being supported in a bearing permitting axial movement of the roll end. A rubber pad is located between each bearing and a force applying piston to allow tilting of the bearing and a frusto-conical link permits the pad to be larger than the piston.

Abstract: A reversing two-high sectional rolling mill stand with multiple pass rolls whose bearing members are adjustably guided in windows of posts of the rolling mill stand. The rolling mill stand is arranged together with additional rolling mill stands of the same type adjacent to each other in series transversely to the rolling direction. The rolls can be connected to drive units or to drive transmission elements arranged between the rolls of adjacent rolling mill stands. Adjustable and fixable guide members for the rolled material are arranged on both sides of the rolling gaps for each of the rolls. The guide members are adapted for the section passes and are mounted jointly on support members which can be connected to the rolling stand. Connecting tops are hinged to the beams of the rolling mill stand and can be slid upwardly and pivoted outwardly for removing the roll.

Abstract: An apparatus for supporting a plurality of reduction rolls in a rolling mill. The reduction rolls are individually supported by support structures within the mill housing. Load cells are disposed between one of the suppport structures and the mill housing, and support members are disposed between each of the other support structures and the mill housing. The overall rigidity of a first support system consisting of the support members and the corresponding support structure is equal to the overall rigidity of a second support system consisting of the load cells and the corresponding support structure. When rolling force is applied to the reduction rolls, elastic displacement of the reduction rolls is equalized, and no trouble is caused to rolling opertion despite the fact that load cells are provided at one site only.

Abstract: Support for rolling rings on rolling stands having rolls supported as cantilevers, comprising a shaft (16) with a first flange (12) and a second flange (13), a rolling ring (11) having substantially parallel lateral walls being interposed therebetween, the second flange (13) operating towards the first flange (12) owing to the action of threaded clamping bolts (14), the first and second flanges (12-13) including undercuts (17), in which support:the shaft (16) extends beyond the rolling ring (11) so as to create a first toric protrusion (20),the second flange (13) comprises a toric hollow (21), which mates with the first toric protrusion (20) and is coupled thereto, and comprises also a second toric protrusion extending within the first toric protrusion (20) and mating therewith,and the undercuts (17) of the first (12) and second (13) flanges include rings (22) made of an antifriction material.

Abstract: Two-high horizontal cartridge rolling stand (10) which comprises an assembly (12) including rolls, chocks and adjustment means arranged between a first end structure (13) and a second end structure (14) of the stand, the first and second end structures (13-14) being connected together laterally below the rolls by a central stiffening body (15), the first end structure (13) of the stand being permanently connected in a rigid and substantially stable manner to the central body (15), whereas the second end structure (14) of the stand is equipped with releasable fixture means able to provide momentary rigid and substantially stable connection of the second end structure (14) to the central body (15), the first end structure (13) of the stand also constraining the chocks in a direction lengthwise to the rolling rolls.

Abstract: A multi-part frame structure forming a mill housing for a rolling mill assembly is disclosed. The housing includes six separate and distinct components, namely a bottom separator member, a top separator member spaced above and disposed in registry with the bottom member and four elongated, upstanding columns of rectangular cross-section adjoining the top and bottom separator members to form a substantially rectangular opening for the passage of a steel strip therethrough during cold rolling operations. The top and bottom separator members are each of T-shaped cross-section defining a pair of tee arms which extend transversely across the frame and project forwardly and rearwardly from a tee leg. The tee arms of the top separator member are inserted in close spaced relation in traversely extending notches formed in upper end portions of the four columns.

Abstract: A metal forming tool attachment includes a body assembly having a front part and a rear part. A rotary forming element journalled on the rear part is driven by an input shaft which projects from the rear part for coupling engagement with the output shaft of an associated power tool. Another rotary forming element journalled for free rotation on the front part cooperates with the driven rotary forming element to form a nip region therebetween. An adjustment lever mounted on the rear part cooperates with a threaded member mounted in fixed position on the front part to move the front part generally toward and away from the rear part whereby the nip region between the forming rolls may be adjusted. A pair of spaced apart rotary forming elements carried by a mounting plate pivotally supported on the front part may be substituted for the single rotary forming element carried by the front part to adapt the tool attachment to perform a radial bending operating.

Abstract: A method for adjusting and changing the heights of the plane of passage of a material being rolled through rolls of a rolling stand of a shape rolling mill including a flange upsetting stand arranged between two universal stand, the height adjustment for changing the plane of passage of the material being rolled being caused by raising or lowering the rolling stand or parts of the rolling stands carrying these rolls, and the height of the passage plane of the material being rolled through the rolls of this flange upsetting stand being controlled, changed and fixed in the course of the rolling operation for correcting the web central position of a shaped steel profile relative to the adjusted plane of passage of the remaining rolling stands.

Abstract: Apparatus for making different residential and commercial building siding of different widths includes a series of roller stations with selective vertical roller positioning adjustments and selective axial lateral roller portion position adjustments. An optional embossing station provides wood graining. A rotary punch forms the holes in a formed one piece nail strip siding.

Abstract: A hydraulic fastener for mounting bearing assemblies on the end of a roll in a rolling mill stand. The fastener includes a hydraulic ring cylinder component having a front face directed toward a roll and an inner cylindrical surface adapted to fit onto a reduced diameter end section of the roll. A chamber extends about the circumference of the cylinder component and is open at the front face. A hydraulic ring piston component is slidably received in this chamber and has an inner face. A retaining ring is threadedly mounted in the cylinder component to hold at least a substantial portion of the piston in the chamber. Passageways are provided in the cylinder component for injecting grease into the chamber and into a space formed between the inner face of the piston and an opposing face of the chamber. A split ring is secured on the end section of the roll to retain the cylinder component in place.

Abstract: The invention relates to a method for the replacing of working rolls in a rolling mill, wherein there is used a swiveling roll-replacement car which runs adjacent to the working rolls of the rolling mill, on a track parallel to the roll track, and can be aligned with the roll or the roll pair to be replaced. The transfer of the working-roll pair or the working roll from the roll stand to the roll-replacement car and the transfer of a new working-roll pair or working roll from the storage rack to the roll-replacement car take place simultaneously, and the positions of these working-roll pairs or respectively working rolls are interchanged, whereafter there are simultaneously transferred the said new working-roll pair or working roll to the rolling mill and the said old working-roll pair or respectively working roll into the storage rack.

Abstract: A roll-forming apparatus is specifically designed to handle metal wires or other wire stock that is not for or is difficult for use in a drawing process, so that it can provide a reduced-diameter wire in a roll-forming process. The apparatus comprises a framed structure having four sides within which a pair of roll-forming rollers are arranged in parallel, one roller being powered by a driving power source, and the other roller being interchangeable. For a typical application, a plurality of such apparatuses may be arranged in series such that each unit is oriented at a right angle with regard to its adjacent unit.

Abstract: In a method for cold-rolling sheets and strips, measured values which characterize the surface evenness, especially the tensile stress distribution, are formed on the delivery side of a rolling mill and, in dependence thereon, adjusting members of the rolling mill are actuated which form part of at least one regulating circuit for the surface evenness of the rolled sheets and strips. Incorrect adjustments and disruptions in the rolling process on the basis of the different time responses of the individual adjusting members are avoided by adjusting the adjusting members at speeds so matched to one another that during at least a portion of the adjusting time, the ratio of the adjustments of the participating adjusting members remains constant, and all adjusting members reach their desired values simultaneously.

Abstract: Rolling stand with rolling rings supported as a cantilever and having their axes at an angle to each other for the rolling of metallic products, the axes of the rolling rings being horizontal, vertical or tilted, the stand comprising shafts (16) to bear the rolling rings (10) with at least a first bearing (12) and a second bearing (13), at least one pair of the first and second bearings (12-13) being lodged in an eccentric support suitable to adjust the distance between centers of the rolling rings (10), the axes (15) of the rolling rings (10) coinciding with the axes (15) of the respective shafts (16), in which stand the axes (15) of the rolling rings (10) in a non-rolling condition form between them a pre-determined angle (alpha) and converge on a position outside and in front of the rolling rings (10).

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: The monitoring device is constructed in such a way that the temperature measurement takes place directly at the bearing and there is no need for detaching connecting lines during changing of rolls. The main features of the monitoring device for roll bearings, installed, for example, in the chock (1) of the work roll (3) of a roll stand, reside in a thermal limit value pickup (6) in contact with the roll bearing (7), as well as in a mechanical, spring-loaded transmission member (8) locked in place in the chock (1) by way of the limit value pickup, for acting on a signal generator (9) arranged outside of the chock (1) in the roll stand, this signal generator being actuated to shut down the rolling mill by automatic outward movement of the transmission member (8) after releasing its locking device by the limit value pickup (6) upon reaching a limit temperature of the roll bearing (7). The monitoring device is preferably intended for use in thin-gage strip and foil rolling mills having high rolling speeds.

Abstract: Rolling unit supported as a cantilever and comprising pairs of rolls (12) which are supported as cantilevers and have their axis horizontal and/or vertical, such unit (10) including a working area (13) and at the same time an area (14) for replacement and maintenance, such two areas being different and located diametrically opposite to each other at the two sides of an axis of rotation (26), the rolling unit (10) being placed between the two areas (13-14), the axis of rotation (26) being vertical or tilted.

Abstract: A roll stand with roll rings which are placed from one side or in a cantilivered manner on a pair of adjustable roll support shafts which are supported on two sides. Both roll support shafts have extension journals which project beyond the roll rings. Journal bearings can be slid onto and are fixable on the extension journals. The journal bearings have bearings housing which are connected with each other in a frictional engaging manner for absorbing rolling forces by means of piston-cylinder units which can be actuated by a pressure medium and are movable parallel to the direction of adjustment of the roll support shafts. On of the bearing housing is connected to the piston rods of the piston-cylinder unit and the other bearing housing, which supports the piston-cylinder units, sliding guide means for the piston rods. The roll stand further includes additional piston rods. The roll stand further includes additional piston-cylinder usits arranged between the two bearing housings.

Abstract: In a rolling mill, for use in combination with a rotatable shaft protruding from a housing, with a work roll mounted on the shaft for rotation therewith exteriorly of the housing, a seal assembly is disclosed for establishing a seal between the shaft and the housing. The seal assembly comprises a circular flinger mounted on the shaft for rotation therewith at a location interposed axially between the work roll and the housing. The flinger has an annular contact surface extending radially from the roll shaft and facing toward the housing. A seal end plate is fixed to the housing and carries a seal holder which has a circular groove facing toward the contact surface. A resilient seal has a circular base received in the circular groove and a pair of flanges extending from the seal holder to terminate at radially spaced edges in sealing contact with the contact surface along inner and outer radially spaced circular lines.

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: Two rolls are supported laterally in bearings in two pairs of side-by-side members with the members being supported by a frame. Adjustment of synchronization and registration is accomplished by adjusting the relative positions of the side-by-side members in or against the rolling direction. The relative positions of the rolls can be adjusted by use of notches engraved in the ends of the rolls; and can be continuously monitored with the aid of a stroboscope light. Magnetic signal devices and other sensors are also suitable for monitoring. Continuous adjustment of roll position is accomplished through low-pitch screws or through hydraulic or electric positioning motors.

Abstract: Spur gearing including an outer gear rim firmly attached to the roller to be driven. A first self-aligning bearing disposed within the outer gear rim mounts the gear rim to a firm support. A pinion outside of the outer gear rim meshes with the outer gear rim. A journal in the pinion connects it to a support bracket. A second self-aligning bearing joins the pinion to the journal. A pinion driving coupling shaft is coupled to the pinion for driving the pinion to rotate. The pinion can incline with respect to the coupling shaft. To limit the angle of tilt of the pinion, in one embodiment, there is a third self-aligning bearing within the pinion to one axial side of the second bearing and a radial gap between an extension of the journal for the second bearing and the third bearing, for allowing and limiting tilting of the pinion axis, and the elements are so sized that the tilt angle of the pinion is limited to about 1.degree. and preferably to less than 0.6 .degree..

Abstract: A setting device for adjusting the position of a roll with respect to a mating roll, as in the press section of a paper machine, or the like. A roll trunnion or journal at the end of the roll is received in a bearing which is supported in a bearing housing that is axially outward of the roll. The outer part of the bearing is in turn supported to an actuator which is shiftable to move the roll transversely of its axis with respect to the mating roll. A base plate hydraulically supports and raises the actuator for the bearing housing. A guide plate supported to the base plate extends past the roll trunnion or journal. Linear motion guide elements for guiding the motion of the bearing housing under the influence of the actuator are provided. They are guide claws on the bearing housing which wrap around the guide plate and move along it. An additional actuator piston operates on the roll trunnion or journal to move it in the opposite direction from the actuator.

Abstract: A wire rolling machine comprising a pair of parallel drive shafts, a housing mounted for swinging movement on each drive shaft, and a first gear within the housing secured to each drive shaft. A second gear within the housing is driven by the first gear, a driven shaft within the housing bearing at one end the second end and emerging from the housing and bearing at an end opposite the second gear a driven roll. Each driven roll has a peripheral groove, the peripheral grooves being adapted to be brought into registry with each other when the housings are swung toward each other. The driven shafts swing in a common plane. Structure is provided to swing the housings relative to each other about the drive shafts.

Abstract: An eight-roll cold strip mill for producing strips of wide width and light gauges, utilizing upper and lower small diameter work rolls, a pair of backing rolls for each work roll, and a driven roll for each work roll contacting the backing rolls thereof. The work rolls, backing rolls and driven rolls are located within a mill housing. The vertical roll separating forces are transmitted to the housing by a plurality of pressure elements operatively connected to the housing and evenly and closely spaced along and contacting the faces of the driven rolls. The horizontal components of the roll separating force are transmitted to the housing by a plurality of pressure elements operatively connected to the housing and evenly and closely spaced along and in contact with the faces of the backing rolls. Each pressure element comprises an arcuate anvil having a concave portion or cavity corresponding to the radius of the respective one of the driven and backing rolls to be supported thereby.

Abstract: A novel process is disclosed by which contorted or distorted sheet gauge steel and other metal scrap material, generated by stamping and other deforming metal-working operations, is flattened by rolls for the purpose of increasing its bulk density and to provide a scrap product that can more efficiently be transported and used for remelting in steel-making and foundry furnaces. The process involves the steps of feeding contorted sheet metal scrap between a pair of moving compressive surfaces, compressing the scrap to substantial flatness, and discharging the flattened steel scrap. The novel apparatus for performing the process is also disclosed.

Abstract: A rolling mill has upper and lower rolls with axes which cross each other. These two rolls are pivoted at ends diametrically opposite to each other. Only rolls chocks mounted at the non-pivoted ends of the rolls are allowed to be hydraulically moved the same distance in the same direction, i.e., the rolling direction or the reverse direction, in a symmetrical relation with respect to the center line of the rolling mill.

Abstract: A rolling stand of the type with tie-rods that, in addition to being suitable to be easily replaced, dismantled and reassembled, it is also capable of being transformed from a two-high stand, having only a pair of parallel and motor-driven rolls, into a universal stand, composed, in addition to the pair of parallel rolls, by a further two vertical idle rolls, opposed to each other, and perpendicular to the previously mentioned cylinders.

Abstract: A top roller apron in a continuous casting assembly, including a back face side frame, an inside face side frame, and a pair of narrow-face frames positioned on both sides of the side frames, a plurality of rolls mounted side by side to each of the side frames, wherein the back face side and inside face side frames each include unit roll frames, the unit roll frames being arranged in series in a casting direction and each supporting an single roll and wherein opposite end portions of each said roll frame are removably attached to side walls of the paired narrow-face frames.

Abstract: A rolling mill stand with roll housings (1, 2) through the window formed by the pillar transoms of the one roll housing (2), the set of rolls (7, 8) together with the bearing installation parts as well as the rest bar (17) and the roller fittings connected therewith can be driven out of and back again into the rolling mill stand on a traveling carriage with rollers (14) on rails (15). One of the two roll housings (2), or the two pillar transoms together with the ground traverse connecting them or the two pillar transom sections (2a, 2b) bordering the window on the driving-out side, constitute hereby an autonomous component superimposed on the traveling carriage and separable from the rolling mill stand.

Abstract: A roll stand used for a cold forming apparatus wherein a body of the roll stand has a slant surface on which a pair of non-driving rolls are installed so as to press sheet metal therebetween. The angle between the slant surface of the body and a base on which the body is installed is adjustable by rotating the body, thereby twisting the sheet metal.

Abstract: The disclosed stand comprises a housing with carriers that are located pairwise on either side of the axis of rolling oppositely to each other and accommodate the bearing chocks of the work rolls. The work rolls are disposed one above the other between the backup rolls. A device for prestressing the stand is included. A device for prestressing the work rolls separately interconnects the bearing chocks of the work rolls of each pair located one above the other.

Abstract: The rolling apparatus contains a controlled deflection roll and, in order to improve uniformity of the roll nip or gap or to more precisely maintain a desired rolling profile, a counter roll contains a journal-less tubular roll or shell which is articulatedly supported at a support beam or at supports of a roll stand. The support distance of the counter roll at the most is equal to the effective support distance in the controlled deflection roll. The bending lines of the controlled deflection roll and of the counter roll thus can be matched in an improved manner.

Abstract: An arrangement for fastening a roll ring (5) to an overhung roll shaft (1) by means of a taper sleeve (8) which transmits essentially the entire torque and which is loaded axially by a spring (43) supported on an abutment (47) adjustable on the free end of the roll shaft. The roll ring can be exchanged easily because of a cylinder part (21) arranged radially within the spring. This cylinder part forms a first annular cylinder space (40) for prestressing the spring, with which it interacts via a flange, and a second cylinder space (22) for drawing off the taper sleeve, to which it is connected via engagement means (28). The spring and the hydraulic devices can remain in place when a roll ring is assembled and removed, because their outside diameter is less than the bore of the roll ring.

Abstract: A bearing isolator assembly particularly for use in a roll mill for isolating the environment from the support shaft bearing. A first isolator ring is non-rotatably mounted on the shaft and is concentric with and rotatable relative to a pair of fixed isolator rings which concentrically surround the shaft and are fixed to a support housing. These isolator rings defines therebetween a narrow clearance space which defines a tortuous path which initially includes a U-shaped labyrinth, one end of which communicates with the environment, and the other end of which communicates with an enlarged annular collection chamber which has a drain port associated therewith. This collection chamber is behind a dam associated with the rotatable isolator ring, and the downstream side of the dam is positioned closely adjacent a radial wall on the fixed isolator ring to define a narrow passage therebetween.

Abstract: A mill and a method for rolling flat workpieces of great width such as metallic strip, plates and the like. The mill comprises upper and lower housing beams joined at their ends by pairs of channels defining windows in which chocks are slidably mounted. Upper and lower work rolls are mounted in the chocks to maintain the work rolls in the vertical plane of symmetry of the mill. Each work roll is provided with a plurality of pressure transmitting elements evenly spaced therealong and contacting a part of the periphery of the work roll. The set of pressure transmitting elements for the upper work roll is operatively affixed to the upper housing beam and the set of pressure transmitting elements for the lower work roll is operatively affixed to the lower housing beam. The pressure transmitting elements of at least one of the sets are each provided with a fluid pressure actuator by which the pressure exerted by that pressure transmitting element on its respective work roll can be rapidly increased or decreased.

Abstract: The invention relates to an improved device for moving and axially adjusting horizontal rolls of a section for rolling mill stand, comprising an axial thrust bearing mounted in the envelope of a casing blocked on an element of the stand, a sleeve mounted for axial slide and fast with the outer race of the bearing, the sleeve being blocked in rotation in the envelope of the casing; a screw mechanism for adjusting the position of the sleeve with respect to the envelope of the casing comprising a thread on an outer part of the sleeve on which are screwed two pinion-nuts, two end stops formed on the casing, two shafted pinions pivoting in the casing each contiguous with a stop and meshing with a respective pinion-nut, the two pinion-nuts being provided on their opposite face with a dog-clutch. The shafted pinions may be controlled by motors having reversible rotation, and associated with pulse counters.

Abstract: A cantilever type rolling mill having a pair of roll shafts rotatably supported in a roll housing on a roll stand, the rolling mill including a tension member provided axially through the center of a roll shaft and having the outer end thereof projecting out of the roll shaft; a roll unit holding a ring roll between a tapered sleeve engaging with one end face and inner periphery of the ring roll and a pressing washer engaging with the other end face of the ring roll; a roll compressing tool detachably engageable with the projecting end of the tension member and incorporating a hydraulic piston-cylinder, the roll compressing tool having a nut member threadedly fitted on the circumference thereof; a plurality of crown splines formed on the outer peripheries of the nut member and pressing washer; and an extraction ring having a crown spline on the inner periphery thereof and slidably and fixably engageable with the crown splines of the nut member and pressing washer.