Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/16—Adjusting or positioning rolls
  • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
  • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
  • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
  • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
  • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
  • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
  • B21B27/02—Shape or construction of rolls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
  • B21B27/02—Shape or construction of rolls
  • B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
  • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
  • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
  • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
  • B21B13/04—Three-high arrangement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
  • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
  • B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
  • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
  • B21B17/06—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a discontinuous process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
  • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
  • B21B17/10—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a continuous process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
  • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
  • B21B17/12—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a discontinuous process, e.g. plug-rolling mills
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
  • B21B31/16—Adjusting or positioning rolls
  • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
  • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
  • B21B31/26—Adjusting eccentrically-mounted roll bearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21B—ROLLING OF METAL
  • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
  • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills

Definitions

• the present invention relates to a rolling stand for rolling metallic bars, wires or tubes along a rolling axis, comprising three rollers mounted on a roller shaft and surrounding the rolling axis in a star shape, which together form a caliber and whose radial position relative to the rolling axis is adjustable for setting the caliber by means of an adjustment connection arranged on the outside for introducing an adjustment torque.
• Rolling stands for rolling bar-shaped material with three or more rolls are commonly used in the production of metal tubes, bars, or wires.
• the material can be rolled to the desired diameter by adjusting the die size accordingly.
• To adjust the die size of a rolling stand it is common practice to change the distance of the rolls from the rolling axis.
• One technical solution for adjusting the roll positions relative to the rolling axis is the eccentric adjustment.
• a rolling mill stand of the above-mentioned technical field is known.
• the known rolling mill stand allows for adjustment of the caliber by means of an eccentric mechanism, which is located on the outside.
• the arranged adjustment connection can be actuated to apply an adjustment torque.
• the rolls are radially adjustable with respect to the rolling axis, so that the caliber of the rolling stand can be continuously adjusted and rolled material of different diameters can be produced.
• DE 100 15 340 A1 This enables synchronous adjustment of all roller shafts and thus all rollers by driving only one eccentric bushing, which is achieved via an adjustment connection provided on a side surface of the frame housing.
• rolling stands are arranged sequentially within a rolling mill. This allows the material to be stretched and rolled to a smaller diameter, particularly through a difference in the rolling speeds of the individual stands.
• the roundness of the rolled material after passing through a rolling stand is generally insufficient, as the cross-section assumes a polygon-like shape due to the star-shaped arrangement of the rolls and their relatively small number, with the number of sides of the polygon corresponding to the number of rolls in the rolling stand.
• rolled material processed by a single three-roll rolling stand has a cross-sectional shape that is not ideally round, but approximately triangular.
• the successive rolling stands are preferably arranged in such a way that the corners of the rolled material cross-section of the rolled material leaving one rolling stand are centrally contacted by the rollers of the following rolling stand, and the rolled material cross-section is thereby rounded.
• the corners of the rolled material cross-section are rolled by a roller in the following rolling stand, thus rounding off the rolled material cross-section.
• the lower roll is oriented so that its roll shaft is horizontal, meaning that the diameter of the lower roll extends vertically in the direction of the roll axis.
• the upper roll in the anti-Y arrangement, it is the upper roll whose roll shaft is horizontal, meaning that the diameter of the upper roll extends vertically in the direction of the roll axis.
• the roll shafts of the two other rolls are tilted by 120° relative to the horizontal roll shaft in both cases.
• the arrangements relative to the horizontal are arbitrary overall, because for the effect described here, only the relative arrangement of the rolls with respect to adjacent rolling stands is relevant.
• the arrangement of rolling stands in a row to form a roll block is usually achieved using stand supports into which the stands are inserted and held. This makes it possible to replace rolling stands within the roll block, for example, for regularly required maintenance.
• the known rolling mill stand allows for switching between a Y-arrangement and an anti-Y-arrangement by rotating it 180° around a horizontal axis and for insertion into the stand mount in both orientations.
• the upper and lower side surfaces of the rectangular stand housing serve as bearing surfaces in the stand mount.
• the rolling stand positions for the Y-arrangement and the anti-Y-arrangement can be selected such that the adjustment connection for the eccentric adjustment, provided on one side face of the stand housing, remains on the same side if the side face is a horizontally bounding side of the stand, i.e., vertically oriented. On the opposite side face, there is then a coupling for transmitting torque to a drive train with a motor and, if required, a gearbox for driving the roll with a horizontally oriented roll shaft.
• the positioning connection While the previously described arrangement of the positioning connection allows good accessibility for manual operation of the positioning connection from this side, the positioning connection cannot easily be operated and actuated automatically, i.e. by so-called remote positioning, because a motor required for this must not be provided on this side in order not to block access to the rolling stand.
• one object of the present invention is to provide a rolling stand of the above technical field which enables a particularly favorable, uniform absorption of the rolling moments and is easily switchable between different orientations, so that it can be used modularly for different configurations and in different positions in a stand block.
• the task is to further develop a rolling stand of the above technical field in such a way that it can be arranged modularly and as flexibly as possible in a rolling block, at different positions and in different orientations in a stand fixture, so that the radial distance of the rolls to the rolling axis, i.e. the Employment is adjustable in several different ways in various employment configurations.
• the present rolling mill stand for rolling metallic bars, wires, or tubes along a rolling axis comprises a stand housing, the outer surface of which, viewed along the rolling axis, has at least six side surfaces arranged offset by a 60° rotation about the rolling axis, with each pair of side surfaces forming a parallel pair.
• the rolling mill stand further comprises three rolls, each mounted on a roll shaft and arranged in a star shape around the rolling axis, which together form a caliber and whose radial position relative to the rolling axis is adjustable for setting the caliber.
• the rolling mill stand also includes an adjustment connection arranged on the outer surface for applying an adjustment torque to set the caliber, the adjustment connection having a drive shaft that is parallel to a pair of the parallel side surfaces.
• the side surfaces are those surfaces of the stand housing that laterally define the front surface and the rear surface through which the rolling axis passes. Together, viewed along the rolling axis, they form the lateral outer surface of the stand housing. Because the side surfaces are arranged parallel to each other in pairs, the projection of the stand housing along the rolling axis can define a polygon with at least six sides and vertices. The side surfaces can be of different lengths.
• the side surfaces of the scaffold housing can serve as a base, have a base, or The side surfaces run parallel to a support surface or surfaces, for example formed by sliding rails, on which the rolling mill stand can stand stably, particularly in a stand support.
• the side surfaces do not have to be flat, but can also have steps, projections, recesses, or openings, and can also be made up of multiple parts.
• the fact that the side surfaces are arranged offset by a 60° rotation around the rolling axis means that the offset side surfaces also form angles of 60° and 120° with each other.
• the side surfaces offset by a 60° rotation are preferably adjacent, but need not be. It is also possible that there are no sharp corners between adjacent side surfaces, but rather rounded edges, extended chamfers, or similar features.
• each roll shaft also refers, for example, to a roll that is axially clamped between two sections of an axially divided roll shaft.
• the roll is arranged on the roll shaft in a rotationally fixed manner, for example, by frictional engagement, i.e., it is not supported by a bearing on the roll shaft.
• each roll shaft can have its own drive connection at an end projecting outside the rolling stand.
• a suitable coupling allows a motor to then apply torque to each roll shaft and thus to the corresponding roll. It is also possible for several roll shafts to be coupled to each other via a gearbox outside the rolling stand and driven by a common motor.
• the rolling motors Since the rolling forces acting in a rolling stand of the present technical field amount to several kilotons, the rolling motors must be powerful and therefore large. Rolling motors and their peripherals should not obstruct access to the rolling block and rolling stand, so as not to make regular replacement of the rolling stands for maintenance more difficult.
• the star-shaped arrangement of the rolls around the rolling axis means that the rolls, or rather their planes of rotation, are each arranged at an angle of 120° to the two adjacent rolls, or rather their planes of rotation. This also applies to the roll shafts, whose axes, unlike the rolls' planes of rotation, do not intersect at the same diameter. However, each roll shaft is positioned at an angle of 120° to the other two roll shafts within the rolling stand.
• the caliber refers to the opening between the three rolls through which the workpiece is fed and rolled. It extends across the cross-sectional area orthogonally to the rolling axis of the passage, which is formed within the rolling surfaces by the star-shaped arrangement of the three rolls.
• the caliber is not identical to a nominal or production diameter of the workpiece because the rolling stand expands due to the workpiece and is elastically deformed during the rolling process.
• the workpiece is subjected to elastic and plastic deformation not only by the rolls themselves, but also, for example, by forces between adjacent rolling stands. its diameter is affected.
• the caliber significantly influences the manufacturing diameter.
• the distances of the rolls to the rolling axis can be adjusted to set the caliber by means of an adjusting torque via the adjusting connection located on the outside.
• the transmission shaft is parallel to a pair of the parallel side surfaces allows for optimal use of space within the stand housing for a roll adjustment mechanism via the adjustment connection located on the outside. This, in turn, enables particularly advantageous flexibility of the rolling stand in its mounting, especially compared to rectangular stand housings, in various arrangements and configurations.
• the number and arrangement of the side surfaces of the present rolling stand offer an advantage over a rectangular stand housing with four side surfaces, as known from the prior art, in that the rolling stand can be used modularly in various positions within the roll block and in different configurations with regard to the adjustability of the radial distance of the rolls to the roll axis.
• the invention achieves more flexible use within a roll block and, in particular, a more flexible selection of both a position within the roll block and a setup configuration, while simultaneously maintaining a compact roll block design.
• the invention also enables the flexible attachment of additional components arranged on or in the frame housing.
• additional components can include, for example, operating fluid connections, guides such as hopper guides or roller guides (as inlet or outlet guides), sliding elements, bearing elements, and fastening elements.
• guides such as hopper guides or roller guides (as inlet or outlet guides), sliding elements, bearing elements, and fastening elements.
• the present invention allows for a high degree of modularization of the rolling block.
• Limiting the complexity of the roll arrangement is advantageous because it simplifies the arrangement of drive devices for the roll shafts within the rolling block.
• three different roll stand arrangements result, each with three identical angles of rotation for the roll shafts when viewed along the rolling axis.
• it is therefore only necessary to provide, for example, translational offsets for the drive devices or gear and coupling components that can compensate for the translational misalignment of the roll shafts. This reduces the complexity and design effort of the rolling block.
• the distance of the drive shaft to the rolling axis, as viewed along the rolling axis, is no more than 10 percent of the distance between the rolling axis and a side face.
• the drive shaft is located approximately in the center of the stand housing between the side faces parallel to it, more precisely within a region of 10 percent of the extent of the stand housing between the side faces around the center of the stand housing where the rolling axis is located.
• This arrangement of the gearbox shaft makes the frame housing particularly flexible, because tilting the frame housing around a tilting axis, for example to switch between a Y-arrangement and an anti-Y-arrangement, parallel to the gearbox shaft and through the rolling axis, results in hardly any translational change in the position of the adjustment connection.
• a high degree of symmetry and, consequently, a high degree of modularity can be achieved.
• the three rollers and the three roller shafts are arranged rotationally symmetrically, each offset by a 120° rotation around the roller axis, with one roller shaft running parallel to the drive shaft.
• Parallel in this context means that, viewed along the roller axis, i.e., its projection onto a plane perpendicular to the roller axis, runs parallel to one of the roller shafts or the projection of one of the roller shafts onto the plane perpendicular to the roller axis. Inclinations may also be present along the roller axis.
• the drive shaft and the roller shafts lie in the same plane perpendicular to the roller axis, and in this plane, the drive shaft and one of the roller shafts are parallel to each other.
• one of the roll shafts runs parallel to the drive shaft is a further advantageous design of the rolling stand, because it allows for a compact stand housing design, as the symmetry of the rolls and roll shafts corresponds to the shape of the stand housing, in particular the relative arrangement of the side surfaces to each other. This enables high strength, uniform load distribution, and high flexibility in the use of the rolling stand in the mill block.
• the rolling stand has only one adjustment port for applying the adjustment torque to set the caliber.
• only one drive unit for the adjustment connection is required in a remote adjustment configuration, simplifying the overall setup.
• a single point is sufficient, allowing all rolls to be adjusted simultaneously and in a coordinated manner.
• a simple design outside the rolling stand can be achieved, along with high flexibility and precise adjustment.
• a particularly preferred adjustment connection is one with an eccentric mechanism operatively connected to eccentric bushings in which the roller shafts are mounted.
• the eccentric bushings are rotatably mounted in the frame housing, and their rotational position can be adjusted via the gearbox.
• This implementation of an adjustment mechanism known from the prior art, is particularly suitable, in conjunction with the geometry of the frame housing, for adjusting the rollers via a single adjustment connection.
• the eccentric mechanism allows for the absorption of high forces and the achievement of high precision without requiring much installation space.
• the outer surface of the stand housing has exactly six sides which, viewed along the rolling axis, form a regular hexagon.
• This particularly advantageous design of the stand housing allows for exceptional flexibility in its use.
• the symmetry of the stand housing resulting from the regular hexagonal shape is particularly well suited to the star-shaped arrangement of the three rolls and roll shafts. This allows the three rolls and roll shafts to be arranged very symmetrically within the stand housing, enabling the rolling stand to be used in several different orientations.
• the stand mount fits, and the rolls can be coupled to the rolling block motors in each of these orientations.
• the stand housing can also have a different shape. For example, a short outer side can be provided between each of the six long outer sides, so that the side surfaces, viewed in the direction of the rolling axis, form a dodecagon.
• the adjustment connection is advantageously operable both manually and automatically by a motor.
• “manually operable” means that the adjustment connection can be operated by hand using a suitable tool.
• “Operated by an external motor,” on the other hand, means that the adjustment connection can be operated, i.e., rotated, without manual operation or the use of a tool, for example, by a suitable clutch.
• the adjustment connection must be arranged and designed in such a way that it is compatible with both drive configurations for the roll adjustment.
• the rolling stand can be used directly in both configurations without having to reconfigure the adjustment connection for either configuration—i.e., manual or automatic adjustment by a motor.
• the scaffold housing is advantageously closed and undivided, and is preferably manufactured from a single monoblock.
• the scaffold housing is preferably manufactured integrally and can therefore, for example, be divided by a Casting processes are used to manufacture the products, resulting in advantageous mechanical properties for absorbing the loads acting during the rolling process and enabling efficient production.
• each of the three roller shafts or rollers can be driven separately by its own dedicated motor.
• This allows, for example, the use of three relatively small motors, as they only need to provide one-third of the rolling torque. This makes it possible to design the motors smaller, which significantly reduces the overall size of the rolling block.
• each of the three roller shafts has a drive-side end for separate drive, which projects outwards from one of the side surfaces of the frame housing.
• the drive of the roller shafts can be ensured via the side surfaces, so that the corners of the frame housing are not occupied by the drive-side ends of the roller shafts.
• FIG. 1A shows a view along a rolling axis 19 extending in the Z direction of a preferred rolling stand 1 for rolling metallic bars, wires, or tubes.
• the rolling stand 1 comprises a stand housing 10, which, in the embodiment shown here, has the shape of a regular hexagon when viewed along the rolling axis 19.
• An outer surface 12 of the stand housing 10 is provided with six side surfaces 14.1-14.6 of equal length, which are arranged rotationally symmetrically around the rolling axis 19. Adjacent side surfaces 14.1-14.6 merge into one another in a region designated as a corner 16.1-16.6.
• the corners 16.1-16.6 may have different characteristics in detail.
• Fig. 1A Inlet side 15, which is not visible but is in Fig. 1B is depicted, and one in Fig.
• the outlet side 13 of the frame housing 10 shown in the illustration thus has, like the frame housing 10 of the present embodiment, a regular hexagonal shape, which is distinguished, among other things, by having three pairs of side surfaces 14.1, 14.4, 14.2, 14.5, 14.3, 14.6, each of which lies parallel to the others.
• the frame housing 10 is manufactured as a monoblock.
• the preferred rolling stand 1 is designed such that the in Fig. 1A unshown inlet page 15 of the in Fig. 1A
• the outlet side 13 shown is the same, so that all features described below for the outlet side 13 can be found on the opposite side of the frame housing 10 at the same or corresponding locations, as will also be shown below with reference to other figures.
• the rolling stand 1 further comprises three rolls 20.1, 20.2, 20.3 arranged in a star shape around the rolling axis 19.
• the rolls 20.1-20.3 each define a plane of rotation that is at an angle of 120° to each other and intersects at the rolling axis 19.
• the planes of rotation of the rolls 20.1-20.3 are arranged orthogonally to each pair of side surfaces 14.1-14.6 of the stand housing 10. In the area of the rolling axis 19, the rolls 20.1-20.3 form a caliber 21 between them.
• the caliber 21 is enclosed in particular by a rolling surface 22 of each of the rolls 20.1-20.3, wherein the rolling surfaces 22 of the rolls 20.1-20.3 are formed as a concave groove centrally along the circumference of the respective roll 20.1-20.3 in order to give the rolled material as round an outer contour as possible.
• the rolling surface 22 can also be shaped differently, in particular as a flat surface or as a convex surface.
• Fig. 1A It can be seen that the rollers 20.1-20.3 are arranged in an anti-Y arrangement because the upper roller 20.1 is vertical and the two remaining lower rollers 20.2, 20.3 are each at an angle of 120° to the vertical orientation of the upper roller 20.1.
• the rollers 20.1-20.3 are each fixedly mounted on a roller shaft, via which the rollers 20.1-20.3 are driven.
• the axes of rotation of the roller shafts run parallel to each pair of side surfaces 14.1, 14.4, 14.2, 14.5, 14.3, 14.6.
• the axes of rotation are also transverse to the roller axis 19 and arranged rotationally symmetrically or in a star shape around it.
• the upper roller 20.1 is aligned in the X direction.
• the axes of rotation of the two other roller shafts are aligned at angles of 120° and 240° respectively with respect to the axis of rotation of the upper roller shaft.
• the roller shafts run inside the frame housing 10, which also contains an eccentric adjustment (not shown) for positioning the rollers 20.1-20.3 via their roller shafts.
• the eccentric adjustment allows for the adjustment of the distance between the roller shafts, and thus the rollers 20.1-20.3, on the one hand, and the roller axis 19 on the other, in the XY plane.
• Fig. 1A This allows for the adjustment of different sizes of caliber 21 and also prevents wear on the rollers for a constant caliber 21. 20.1-20.3 compensate.
• the eccentric adjustment forms an adjustment mechanism for rollers 20.1-20.3.
• the adjustment mechanism of the rollers 20.1-20.3 can be operated externally by rotating an adjustment port 30 protruding outwards near corner 16.1.
• the adjustment port 30 is located in the Fig. 1A
• the adjustment port 30 is designed to be both manually operable and automatically actuated by a motor.
• the adjustment port 30 is preferably connected to a rotatably mounted gear shaft extending into the interior of the frame housing 10 and to a bevel gear that engages in a toothed segment of an eccentric bushing of the eccentric adjustment mechanism.
• the eccentric bushing transmits a rotary motion transmitted to it via the bevel gear to the two other eccentric bushings, thus enabling synchronous adjustment of the rollers.
• the adjustment mechanism extends beyond the adjustment port 30 into Fig. 1A not shown in detail.
• the adjustment port 30 is located near corner 16.1 and the transmission shaft connected to the adjustment port 30 runs parallel to the one in Fig. 1A upper roll shafts, i.e., in the X direction, whose drive-side end 24.1 projects from the frame housing 10 on the opposite side.
• the adjustment port 30 is thus located essentially opposite the drive-side end 24.1 of a roll shaft that runs parallel to the transmission shaft.
• the employment connection 30 is in Fig. 1A near corner 16.1 and slightly offset upwards with respect to an imaginary horizontal center plane of the frame housing 10.
• a distance between the adjustment connection 30 and the parallel to the transmission shaft, i.e. in Fig. 1A in the X-direction, running midplane along the Y-axis in Fig. 1A This is less than 10% of the extent of the scaffold housing 10 in the Y direction, i.e., between two opposite side surfaces 14.2, 14.5 of the scaffold housing 10.
• FIG. 1A Three mounting elements 26.1, 26.2, 26.3 are for a Fig. 1A
• the guide for the rolled material is not shown.
• the guide can be mounted on the exit side 13 of the stand housing 10, which is located in Fig. 1A shown.
• On inlet page 15, which is in Fig. 1A If it is not apparent, the mounting elements 26.1, 26.2, 26.3 can also be arranged so that a guide for the rolled material can be mounted there.
• the guide for the rolled material can, for example, be a roller guide, in particular an inlet roller guide 60, as exemplified in Fig. 1B
• the assembly elements 26.1, 26.2, 26.3 are arranged in a star shape around the rolling axis 19 and are each, with respect to the rolling axis 19, opposite one of the rolls 20.1, 20.2, 20.3.
• the three assembly elements 26.1, 26.2, 26.3 are each arranged at an angular interval of 120° around the rolling axis 19.
• FIG. 1A shown outlet side 13 of the scaffold housing 10 three coupling clamping areas 50.1, 50.2, 50.6 in adjacent corners 16.1, 16.2, 16.6 of the The coupling clamping areas 50.1, 50.2, 50.6 are each bounded by two clamping strips 52.
• the three adjacent corners 16.1, 16.2, 16.6, in which the coupling clamping areas 50.1, 50.2, 50.6 are arranged, are corner 16.1, in which the adjusting connection 30 is also arranged, and the two corners 16.2, 16.6 adjacent to it.
• the coupling clamping areas 50.1, 50.2, 50.6 serve to connect a roller guide adjusting connection 64, which is located in Fig. 1A not, but in Fig. 1B As shown, it is securely attached to the stand housing 10.
• Fig. 1A The figure shows that the scaffold housing 10 has four slide rails 40.2, 40.3, 40.4, 40.5 on the outlet side 13, which are arranged parallel to four adjacent side surfaces 14.2, 14.3, 14.4, 14.5.
• the slide rails 40.2-40.5 connect to one another and extend along the circumference of the hexagonal scaffold housing 10 from corner 16.2 with coupling clamping area 50.2 to corner 16.6 with coupling clamping area 50.6.
• the slide rails 40.2-40.5 are shown in the figure. Fig. 1A not on the side surfaces 14.2-14.5, but offset inwards in the direction of the rolling axis 19.
• the sliding strips 40.2-40.5 form sliding surfaces that extend circumferentially along the side surfaces 14.2-14.5 and outwards from the plane of the sheet parallel to the rolling axis 19 and the side surfaces 14.1-14.6, i.e. in Fig. 1A in the Z-direction.
• the sliding strips 40.2-40.5 can serve as a contact surface in four orientations of the rolling stand 1 and are primarily intended to allow the rolling stand 1 to be mounted in a stand mount (not shown). This facilitates the process by allowing the rolling stand 1 to be slid into the stand receptacle on the sliding rails 40.2-40.5, which can also be used as sealing elements.
• a stand mount not shown
• the rolling stand 1 also has three water outlet openings 42.1, 42.2, 42.3 on the side shown in Fig. 1A shown outlet side 13. Cooling water, which is to be used, for example, for an inlet roller guide, can thus be discharged at one of the side surfaces 14.1, 14.3, 14.5 through in Fig. 1A Water is introduced into the scaffold housing 10 through the water inlet openings not shown, guided through the scaffold housing 10 and directed out through one of the water outlet openings 42.1, 42.2, 42.3 and from there fed to the roller guide.
• Fig. 1B The rolling mill stand 1 shows Fig. 1A in a position opposite the orientation of Fig. 1A by tilting the rolling stand 1 about a horizontal axis K, i.e., running in the X-direction, by 180°.
• a view of the rear of the rolling mill stand 1 according to Fig. 1A i.e., the inlet side 15, shown.
• the rolls 20.1-20.3 are, in contrast to the position shown in Fig. 1A
• the positions shown are arranged in a Y-arrangement.
• the roller shafts are positioned relative to the position of the rolling stand 1.
• Fig. 1A The drive-side ends 24.1-24.3 are shifted parallel to each other, and therefore protrude from the stand housing 10 in the same direction, but at a different position, namely mirrored at the respective corners 16.2, 16.4, 16.6.
• the depicted rolling stand 1 thus allows, through the tilting described above, its use in the rolling block with both a Y-arrangement and an anti-Y-arrangement of the rolls 20.1-20.3 in the same stand mount, with the drive-side ends 24.1-24.3 of the roll shafts only shifting translationally. This enables a high degree of operational flexibility for the rolling stand 1 in a compact rolling block.
• the rolling drives which are coupled to the drive-side ends 24.1-24.3 of the roll shafts in both positions of the rolling stand 1, can be arranged for each stand position with alternating Y-arrangement and anti-Y-arrangement on the same side of the rolling axis 19, which keeps the space requirement of the entire rolling block relatively small.
• the adjustment port 30 Due to the tilting about axis K, the adjustment port 30 remains located near corner 16.1 of the stand housing 10. It is positioned slightly downwards with respect to the horizontal center plane of the stand housing 10, namely mirrored at corner 16.1. Nevertheless, even in this position of the rolling stand 1, i.e., the Y-arrangement, the adjustment port 30 is easily accessible from the same side and is therefore particularly suitable for efficient manual operation of the eccentric adjustment of adjacent rolling stands 1.
• an inlet roller guide 60 is shown, which is attached to the frame housing 10 via the mounting elements 26.1-26.3, which are described above with reference to Fig. 1A were described and also on the in Fig. 1B
• the inlet side 15 of the frame housing 10 is shown and is attached.
• the inlet roller guide 60 is also adjustable by positioning the rollers of the inlet roller guide 60 closer or further away from the rolling axis 19 by means of a roller adjustment mechanism.
• the inlet roller guide 60 is connected via a drive shaft 62 to a roller adjustment connection 64, through which a torque can be applied to the roller adjustment mechanism.
• the roller positioning connection 64 is attached to the coupling clamping area 50.1 and the associated clamping strips 52 on the rolling stand 1.
• the arrangement of the mounting elements 26.1-26.3 and the coupling clamping areas 50.1, 50.2, 50.6 on the stand housing 10 allows the roller guide 60 to be attached to the stand housing 10 securely, precisely, and quickly.
• FIG. 1B A water line 66 of the inlet roller guide 60 can be seen.
• the water line 66 is connected to the water outlet opening 42.3, through which cooling water for the guide rollers of the inlet roller guide 60 leaves the rolling stand 10, the cooling water passing through a Fig. 1B Water is supplied to the rolling stand 10 via the water inlet opening 43.3 (not shown) when it is received in the stand mount and connected to a water connection of the stand mount.
• Fig. 1C shows the preferred rolling mill stand 1 made of Fig. 1A in a position from Fig. 1A rotated 120° clockwise around the rolling axis 19. Due to the geometry of the rolling stand 1, the rolls 20.1-20-3 are in the same anti-Y arrangement as in the Fig. 1A oriented in the position shown, and the three drive-side ends 24.1-24.3 also run in the same directions and are located in the same positions, so that they are in can be coupled to the external motors for applying the rolling torque in the same way as in the off position Fig. 1A However, the employment connection 30 is, in comparison to Fig. 1A arranged rotated 120° clockwise.
• This arrangement preferably serves to implement remote adjustment of the adjustment mechanism of the rollers 20.1-20.3 by an external motor.
• the position of the adjustment port 30 in the Fig. 1C The position of the rolling stand 1 shown allows, on the one hand, an external actuating clutch of an external actuating motor in the stand mount (not shown) to engage with the actuating connection 30 and actuate it in order to actuate the rolls 20.1-20.3. This differs from the position shown in Fig. 1A and 1B Positions shown.
• the rolling stand 1 must be able to be inserted into and removed from a stand mount transversely to the rolling axis 19 in order to allow for quick maintenance. This requirement in turn means that the rolling stand must be in Fig. 1A-1D It must be inserted to the right into the frame mount so that the vertically standing roller 20.1 is in Fig. 1A and 1B or 20.2 in Fig. 1C and 1D
• the driving roller motor can engage with the respective drive-side end 24.1 or 24.2 because the roller motor for the roller 20.1 is located to the right of the roller axis 19.
• Fig. 1A and 1B or 20.2 in Fig. 1C and 1D is arranged to the right of the rolling axis 19 in order to be coupled to the drive-side end 24.1 or 24.2.
• Fig. 1A-1D No external adjusting motor may be located to the left of the rolling axis 19 and thus also to the rolling stand 1, i.e., in the insertion direction in front of the rolling axis 19.
• the positions from Fig. 1A and 1B are therefore configured for manual engagement, i.e., operation of the engagement port 30 by a person, and the engagement port 30 cannot be engaged in this configuration or only with disproportionate effort. The effort is carried out through an automatic remote hiring process.
• the positions from Fig. 1C and 1D in which the adjustment port is located behind the rolling axis 19 in the insertion direction, are configured for remote adjustment, i.e., actuation of the adjustment port 30 by an external motor.
• Fig. 1D shows the preferred rolling mill in the configuration from Fig. 1C , i.e., the configuration for remote positioning with positioning port 30 to the upper right.
• the position of the rolling stand 1 in Fig. 1D can be compared to those in Fig. 1C by tilting the rolling stand 1 about the axis K, which is inclined by 120° and thus also by 60° to the horizontal X-direction and runs through corners 16.1 and 16.4, by 180°.
• Analogous to the transition between the position of the rolling stand 1 from Fig. 1A and those from Fig. 1B This also occurs during the transition between the position of the rolling stand 1.
• Fig. 1D tilted 180° about axis K, which runs essentially parallel to the gear shaft of the adjustment connection 30. This tilting action does not change the orientation of the adjustment connection 30, and the rollers 20.1-20.3 exit the position described above.
• Fig. 1C shown anti-Y arrangement in the Fig. 1D The Y-arrangement shown and vice versa.
• Fig. 1D is like in Fig. 1B
• the inlet side 15 of the rolling stand 1 is shown.
• an inlet roller guide 60 together with drive shaft 62 and roller adjustment connection 64 attached to the frame housing 10 via the mounting elements 26.1, 26.2, 26.3 and the coupling clamping area 50.2 with clamping strips 52.
• the rolling stand 1 can be positioned in the four in the Fig. 1A-1D
• the positions shown are all compatible with similar arrangements of the rolling motors in the rolling block with stand mounts.
• This allows for both Y-arrangements and anti-Y-arrangements of the rolls, and equally in two different configurations in terms of different orientations and arrangements of the adjustment connection 30: one for manual adjustment and one for remote adjustment.
• This flexibility is not achieved with the known rectangular stand housings because these can only be securely positioned and moved on or along one of the side surfaces of the stand housing, which dictates the orientation of the adjustment connection while maintaining the same orientation of the rolling motors.
• FIG. 2A shows a perspective view of the entry side 15 of the preferred rolling stand 1, in which the three rolls 20.1, 20.2, 20.3 are arranged in the anti-Y arrangement and the adjustment port 30 of the eccentric adjustment is aligned horizontally to the side.
• Fig. 2B shows how Fig. 2A the inlet side 15 of the rolling stand 1 from a different perspective than Fig. 2A , in which the drive-side end 24.1 of the roller shaft of the roller 20.1 can be seen.
• FIG. 3A shows a side view of the rolling mill stand, in which the three rolls are arranged in an anti-Y configuration.
• Fig. 3A shows the corner 16.1 and the side surfaces 14.1 and 14.6 as well as the adjustment connection 30 and the drive-side ends 24.2 and 24.3 of the roller shafts of the rollers 20.2 and 20.3.
• FIG. 3A Figure 1 further shows two water inlet openings 43.2, which can be connected to a water connection in the scaffold housing to receive water into the scaffold housing 10 and to discharge it through the water outlet opening 42.2, for example to supply it to a water pipe 66 or an inlet roller guide 60.
• Fig. 3A Furthermore, an air connection 41.2 can be seen next to the drive-side end 24.2, through which compressed air can be supplied to the frame housing 10 in order to protect the interior of the frame housing 10, in particular the gear parts located therein, for example the eccentric adjustment, from water ingress by means of overpressure.
• Fig. 3B shows the corner 16.1 from Fig. 3A opposite corner 16.4 and the side faces 14.1 and 14.6 opposite side surfaces 14.3 and 14.4. Furthermore, the sliding strips 40.3 and 40.4 can be seen on both the inlet side 15 and the outlet side 13.
• the drive-side end 42.1 of the roller shaft of the roller 20.1 can be seen at the front, where an air connection 41.1 and two water inlet openings 43.3 are also shown.

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