Abstract: A rolling mill for rolling metal products, comprising two roller stands with a stand cross-member. A roller is rotatably mounted in the roller stands. The roller is operatively connected to a balancing cross-member, and at least one hydraulic piston-cylinder system is arranged in the stand cross-member, with which a tensile force can be generated between the stand cross-member and the balancing cross-member by the hydraulic piston-cylinder system. In order to prevent leakages in particular in the event of tall mill ascending paths, the piston-cylinder system has a cylinder housing with an upper axial end and a lower axial end. A piston is movably arranged in the cylinder housing, and the piston protrudes beyond the cylinder housing both at the upper axial end as well as at the lower axial end in each operating state.

Abstract: A cap for a rotating electric machine, the cap comprising at least a rolling bearing receiving portion (2) for receiving a rolling bearing (R) having an outer race (E), the rolling bearing receiving portion (2) comprising a radially resilient central portion (3) configured to exert pressure on the outer race (E) of the rolling bearing.

Abstract: The invention relates to a wire feed station of a wire shaping machine, said station including grooved rollers functioning in pairs and rotating in reverse directions with respect to each other. The wire is clamped between said rollers by these moving closer to one another. Both rollers of the same pair of driving rollers are supported at the front of the same bearing block unit, said bearing block being elastically deformable to absorb a relative movement of the rollers. Preferably, said bearing block also supports an endless transmission screw on which are engaged a couple of transmission wheels coaxial with the driving rollers which they drive into rotation. More particularly, a bearing block is deformed so that a relative movement of the rollers results in a rotation-deformation of the bearing block about the transmission screw axis.

Abstract: A bearing block assembly for bearing a pair of rollers which enclose a nip, at one end of the pair, includes two bearing blocks, each of which is intended for bearing a respective roller and which are provided with supporting elements for supporting in a frame. The bearing blocks each have a bearing aperture with a center line or axis, support elements via which the bearing blocks are supported next to one another in such that the center lines or axes of the bearing apertures extend parallel and at a distance from one another, as well as adjusting element via which the mutual distance between the center lines or axes can be adjusted. The support elements include a spring structure which is situated between the bearing blocks and cooperates with both bearing blocks and which is elastically deformable during adjustment of the mutual distance between the center lines or axes.

Abstract: A device for adjusting the distance of stripper chisels from a circumference of work rolls supported in chocks of a roll stand, wherein the stripper chisels are movable parallel to the rolling line in direction towards and away from the roll gap. To adapt to different operating positions and diameters of the work rolls, the stripper chisels are arranged in a horizontally displaceable stand roller table. The movement of the stand roller table is linked with the vertical movement of the bottom work roll so that the stripper chisel can be moved away from the work roll when the bottom work roll moves upward, and vice versa.

Abstract: A support arrangement (10) of a roll of a fibrous-web machine, has a first frame part (12) in which the roll (20) of the fibrous-web machine is supportable from its end when in use and a second frame part (22) in which the first frame part (12) is fastened by means of an elastic fastening. The arrangement has a motion direction control arrangement (34) for controlling the direction of the motion allowed by the elastic fastening in a way determined by the direction control arrangement (34).

Abstract: A moving die is held by a robot and made to approach a vehicle, and a positioning pin is inserted into a positioning hole of the vehicle. The moving die is brought into a floating state of being displaceable relative to the vehicle by reducing a force of the robot for maintaining an attitude thereof. In a state of holding the moving die by the robot, a surface of the moving die is brought into contact with the vehicle by an adsorbing mechanism including an adsorbing portion of an elastic member provided to the moving die. The moving die and the robot are cut to be separated.

Abstract: The invention relates to a damping method and device for a roll stand to reduce the sensitivity to chatter thereof. In the method of the invention the absorption is conducted by a chatter mass (8) situated above each post (2) forming the roll stand (1) and the vibration energy is dissipated in a mattress (83) of an incompressible fluid forming a direct link between each post (2) and the chatter mass (8) According to the invention the fluid mattress is kept in a steady flow by supply means (91) and exhaust means of adjustable caliber (92). The frequency response of the system and its damping coefficient are set by the dimensioning of the chatter mass (8), the control of the thickness (h) of the fluid mattress and its flow rate via the calibrated orifice (92).

Abstract: An apparatus and method for forming and joining a first sheet material (A) located in a nest (30) to a second sheet material (B) positioned on top of the first sheet material. The apparatus includes a positional pressure roller tool or positional pressure variance unit (50) for performing the forming and joining operations. The PPVU (50) may include both a main roller (58) and a touch-up roller (60). The PPVU (50) is operatively associated with a programmable positioning apparatus in the form of a robotic arm (52) and a machine cell (10) whereby the position of the robotic arm (52) relative to the nest (30) dictates the applied pressure at the interface between the roller (72) and the nest (30).

Abstract: The invention relates to a method and a machine for temper rolling a metal band including at least two temper rolling units E, E? each carrying an active cylinder (2) and a set (7, 70) of back-up members mounted rotatably on a transversal chassis (1), and means for displacement vertical of each temper rolling unit (E) between a resting position and a temper rolling position for which the active cylinder is applied to the band while bearing, on the opposite side, on its back-up members (7) whereas each active cylinder (2, 2?) may be brought into rotation around its axis, in its position away from the band, at an angular speed corresponding to the running speed of the band.

Abstract: Apparatus and method for reducing vibration in a mill stand. The apparatus comprises a roll (4) positioned upstream or downstream of the mill stand (1) and over which the strip material (2) being rolled is passed. The vibration control apparatus comprises an inertia element in the form of a flywheel (7) connected to the roll (4) by a stiffness element in the form of a compliant shaft (6). The components (6) and (7) form a mechanical system which can be tuned in such a way as to introduce a speed fluctuation at the roll (4) which exactly matches the speed fluctuation of the strip material as it enters the roll bite. Both the inertia element (7) and stiffness element (6) can take other forms: for example, the stiffness element could be a flexible drive belt or belts; the inertia element could be a shaft about which the roll (4) rotates, via a stiffness element.

Abstract: A roller type hemming apparatus includes a support member having a slide bore. A ball screw extends through the support member into the slide bore. A bearing is engaged with the ball screw inside the slide bore. The apparatus further includes a guided slide member having a first portion received in the slide bore and a second portion extending outside of the slide bore. The slide member first portion has a receiver. A resilient member is set in the receiver. The resilient member operably engages the bearing, the bearing being disposed outside of the receiver. The apparatus also includes a retaining plate having an opening therein. The retaining plate is mounted to the support member adjacent the slide bore for retaining the slide member first portion in the slide bore. A hem roller is rotatably mounted to the slide member second portion.

Abstract: Vibration damping apparatus (40) includes a body in the form of backup roll balance piston (42) positionable for sliding movement in an enclosure in the form of cavity (44) in the lower backup roll chock (30) of the mill stack (10). The body of the piston is a casing which performs the role of a conventional postion. A damping means is integral with the piston (42) for providing vibration damping of opposing backup roll chocks (24, 30). The damping means is a specially designed absorption system to provide tuned stiffness and damping elements which act in parallel and are located in compartment (46) at an uppermost end or cap of the piston (42). A second vibration absorbent compartment portion (56) of the piston (42) also includes vibration absorbing components. Portion (56) is an integral cap located at the end of the piston (42) in contact with the fluid (52).

Abstract: A rolling unit for a rolling mill for rolling or sizing metal pipes, bars or wires has at least three rolls arranged in a star arrangement. Each roll has a separate drive mechanism and is rotatably mounted on bearings on both sides of it. The rolls are adjustable radially together with the bearings. The improved rolling unit has smaller outside dimensions but can take a higher load. The number of individual rolling unit parts is also reduced as well as manufacturing and assembly expenses. For this purpose the bearings of the roll shafts are mounted in respective eccentric sleeves, whose rotational position may be adjusted manually and in a stepwise manner between several rotational positions.

Abstract: Apparatus for continuously casting metal strip comprises a pair of parallel casting rolls (16). In use of the apparatus molten metal is delivered between the casting rolls which are rotated to deliver cast strip product downwardly from the rolls. Casting rolls (16) are mounted on a roll module (13) installed in and removable from the caster as a unit. Module (13) is movable horizontally from a stand-by position to an intermediate position beneath a casting position of the rolls and can be hoisted from the intermediate position by operation of hoists (71) to lift the rolls (16) into their casting position.

Abstract: A roll-forming machine is provided with a base structure, a plurality of first roll-forming stations that form a first component having a Z-shaped cross section, and a plurality of second roll-forming stations that form a second component having a C-shaped cross section. At least one of the roll-forming stations has a pair of rotatable arbors adapted to support a plurality of forming rolls and a pair of support structures adapted to support a plurality of bearing assemblies. The roll-forming station also includes a pair of adjustment mechanisms that allow the position of some of the bearing assemblies to be adjusted and a pair of compression assemblies that exert a force upon some of the bearing assemblies when the bearing assemblies are moved away from an initial position.

Abstract: Twin roll caster for continuously casting metal strip comprises a pair of parallel casting rolls (16) to which molten metal is supplied through a delivery nozzle (19). The rolls are mounted on roll carriers (104) moveable on a frame (102) to allow rolls (16) to move toward and away from one another. Biasing units (110, 111) allow inward biasing forces to be applied to the roll carriers (104) so as to bias one of the rolls (104) toward the other. The biasing units (110) incorporate biasing springs and means to adjust the thrust exerted by the springs.

Abstract: An electric motor driven roll feed system for intermittently advancing stock into the work station of a punch press. The roll feed system is designed so that its main rotating elements have greatly reduced rotational inertia. A low inertia overall roll arrangement is characterized by two relatively small diameter cooperating feed rolls that are respectively radially supported by a plurality of light back up rollers that peripherally engage these small feed rolls at locations spaced along the operative lengths of such feed rolls. The spaced rollers thus allow the applied operational stock gripping, feeding and braking forces to be distributed over several support locations along the operative axial length of each feed roll.

Abstract: The present invention provides means for automatically adjusting rollforming equipment to accommodate a range of different gauges of material such as sheet metal being formed. One rollforming roller (34) on each rollforming head (4A) is mounted on an eccentric so that a force supplied in the direction of material feed through the tooling rollers (33,34) will increase the tooling gap therebetween. An automatic gauge adjustor includes applying a source of substantially constant pressure sufficient to achieve the rollforming action against rotation about the eccentric while allowing movement of the rollforming roller also about the eccentric so that the roll will move against the pressure being provided in the direction of the material feed to accommodate the gauge of material within the working range set.

Abstract: A straightening apparatus with a plurality of rotatable straightening rollers arranged in two parallel planes, with the axles of the rollers being supported in two body parts forming a basic chassis. The body parts are arranged relatively movable against each other on guides and have a closing mechanism. The body parts are maintained in a defined open position by the springs supported on the parts, and are movable by the closing mechanism into a closing position with a predetermined defined zero position, whereby the closing position is securable in the defined zero position by a releasable locking connection.

Abstract: A universal rolling mill stand of a demountable type having two pairs of adjustable rollers. One of the adjustable rollers has a pair of horizontal rollers and another has a pair of vertical rollers. The horizontal rollers and the vertical rollers are mounted demountably from a support base by a horizontal ring stand which is demountable from the base. A pair of lateral vertical side support structures slide apart in opposite directions from the pair of horizontal rollers such that an interior ring of a support roller bearing is retained on the rollers.

Abstract: A method of determining the spring characteristic of a roughing and finishing stand and a method of adjusting the roll gap of the roll stand prior to rolling, particularly for rolling lightweight sections with narrow tolerances, wherein at least one horizontal roll of the stand is adjustable. The stand has a swingable stand top which connects the housing posts of the stand housings, wherein the stand top is connected to the housing posts by tie rods which are pretensioned by a hydraulic tensioning device. At least the upper of the horizontal rolls is moved by an electromechanical adjustment unit of the rolls towards the other roll and the rolling forces to be measured between the roll bodies is applied by the hydraulic tensioning device, wherein the electromechanical adjustment unit is adjustable by predeterminable adjustment distances in the unloaded state while maintaining roll contact.

Abstract: An apparatus for adjusting the roll gap between cooperating rolls of a rolling stand for coating e.g. plastic foils or metal strips with a material which does not or does effect the roll gap includes a split bearing shell for each roll journal, with one shell half being part of a support unit and arranged inwardly relative to the roll gap and the other shell half being part of an adjusting unit and arranged outwardly relative to the roll gap. The individual elements of the adjusting units are arranged relative to the individual elements of the support unit in such a manner that the forces exerted free from play by the adjusting unit and of the support unit at both sides of the roll journals act in a common plane extending perpendicular to the axes of the rolls.

Abstract: In a beam mill stand having lower horizontal roll chocks, supported by screw-ups, upper horizontal roll chocks suspended on hooks from balance beams and urged downward by screw-downs, and vertical roll chocks supported by and moveable in transverse guide ways, in order to facilitate changing of the rolls as an interlocked stack, there are resilient support mechanisms in the upper horizontal roll chocks which are restrained by the hooks on the balance beams. With the mill stand inoperative, when the beams are lowered the resilient support mechanisms are released and extend to engage the vertical roll chocks to support the upper horizontal roll chocks resiliently. An interlocking mechanism in the vertical rolls is operated by the resilient support mechanism so that the vertical and lower horizontal roll chocks are locked against lateral movement.

Abstract: Die-cutting roll assemblies are provided which utilize a shaftless die roll. In certain embodiments, stability in the press is provided by an assist adaptor which has flanged bearings that cooperatively support the die roll laterally and transversely. In other embodiments, the roll is supported in a frame that has removable centers, which permit the use of rolls of various lengths in the assembly.

Abstract: A metal sheet is formed into an arcuate contour by rolling the sheet under high pressure on an elastomeric pad (24) supported by a rigid frame. A pair of laterally spaced rollers (30, 32) are used to form the arc. Each moves from the transverse edge of the sheet inwardly and crosses the center line of the sheet. Under the high pressure applied to the rolls the sheet yields to form the arc and the elastomeric material elastically deforms as the arc is formed. The rollers depend from vertical guides (34, 36) which follow a track extending transversely across the sheet. A guide track (38) is provided in a transverse beam located above the rolls and the guides. Hydraulic or pneumatic jacks (70) apply pressure to the beam which in turn applies pressure to the rolls.

Abstract: A shear plug particularly for use in combination with a load cell in the roll-rack of a continuous-casting machine. The plug includes a body which has a shallow recess in one face and an axially aligned and preferably deeper recess in the other face, and a wall separating the recesses. The shallow recess receives the end of a load cell of smaller dimensions. On application of an overload the load cell punches out a tapered segment from the wall. The plug does not expand sideways when it fails and is readily removed from the surrounding mechanism.

Abstract: A method and mechanism for controlling forces exerted between opposed roll-pairs of a continuous-casting machine and a casting traveling therebetween. Each roll pair is equipped with a load cell for measuring the force. If the force at any roll-pair deviates from the norm, it is an indication that the dimension of the gap between rolls of that pair requires correction. Correction is effected through a screw threaded adjusting means.

Abstract: The present invention provides means for automatically adjusting rollforming equipment to accommodate a range of different gauges of material such as sheet metal being formed. One rollforming roller (34) on each rollforming head (4A) is mounted on an eccentric so that a force supplied in the direction of material feed through the tooling rollers (33,34) will increase the tooling gap therebetween. An automatic gauge adjustor includes applying a source of substantially constant pressure sufficient to achieve the rollforming action against rotation about the eccentric while allowing movement of the rollforming roller also about the eccentric so that the roll will move against the pressure being provided in the direction of the material feed to accommodate the gauge of material within the working range set.