DE2015027A1 - Rolling device for rolling, polishing or straightening rod-shaped or tubular! Rolling stock - Google Patents

Description

Rolling device for rolling, polishing or straightening rod-shaped or tubular rolling stock.

The invention relates to a rolling device for rolling, polishing or Straightening of rod-shaped or tubular rolling stock, preferably with several rolling units arranged one behind the other, which are provided with groups of rolling elements, each of at least two symmetrically distributed around the rolling stock axis arranged rolling bodies that rotate about axes that are perpendicular to wesentliohen to the direction of advance of the rolling stock.

Known rolling devices that are used as rolling mills for reducing rod-shaped or tubular rolling stock to a certain round cross-section, above one A large number of calibrated rollers mounted in stands, each of which has its axes extend perpendicular to the direction of advance of the rolling stock. Calibration usual for you up to now of the rollers is, starting from the entrance cross section to the end cross section, to the example round - oval - round or round - polygonal - round. The reels are set in rotation by motors via articulated spindles, comb rollers and gears, and the rolling stock is adjusted according to the roll rotation by the narrowing calibration of the roller pairs driven through.

In the case of rolling mills with a high output, the rolling units are with roller pairs arranged one behind the other, with the calibration of a roller pair gets smaller and smaller from rolling unit to rolling unit. These so-called continuous Rolling mills deliver a relatively uniform rolled product if worn Rollers must be replaced in good time. bas is particularly important with the so-called Round calibration is important because otherwise non-round end products will be produced. The need for replacement is in particular the rollers, which Generate the end cross-section of the rolled stock, because of the particularly tight dimensional tolerances are valid.

The known rolling devices have essentially four systems Application found which differ from each other by the arrangement of the one behind the other differentiate between the following roller groups or roller pairs: 1. the so-called 90 ° arrangement in which the opposing roller pairs of the rolling unit are arranged offset from one another by 90 ° to the rolling unit; 2. the so-called arrangement, in the case of the two opposite pairs of rollers from unit to unit as well are arranged offset by 900 to each other, but in which the individual svggregate are mutually displaceable in the axial direction, so that in the event of wear of a roll caliber the next caliber already cut into the roll in the roller core or working line can continue to work; 3. the so-called Y-arrangement, at the three reels in each Aggregate arranged around 1200 are offset from one another, so that in each case the next following rolling unit to an angle of 60 ° to the preceding rolling unit is offset; 4. the so-called Cross arrangement, in which four rollers are provided in pairs opposite one another are, of which the rollers of the next group are at 45 ° compared to the previous one Roller group are arranged offset.

The offset of the rolling units by certain angles to each other is required because the center-to-center distance of the individual rolling units, based on the End product diameter is relatively large and thus a twisting of the rolling stock can occur.

In all known and previously described rolling systems are the rollers are each driven and deformed in the feed direction of the rolling stock and simultaneously drive the rolling stock in the feed direction perpendicular to it Axis of rotation. It is a prerequisite for a flawless end product that the Piercing diameter only differs by a certain maximum amount. Is namely the piercing diameter - e.g. too big, the caliber becomes overcrowded, resulting in an additional Ridge results. If the piercing diameter is too small, the calibres will not be completely filled in, and it results e.g.

a wavy surface. This irregular cross-section leaves one premature roll caliber wear occur.

In addition, dimensional deviations up or down are inevitable Episode. There are also considerable difficulties or problems in making it of the individual calibrated rollers.

The invention is based on the object of the known and previously mentioned rolling devices to eliminate occurring parts, in particular the major parts resulting from the previously usual and necessary @alibration of the Rollers result, the arrangement should continue to be such that at the end point there is no additional burr, as has hitherto been the case when the caliber If the piercing diameter was too large, it was overfilled. After all, it is a question of improvement the rolling tolerances in order to increase the rolling body service life in order to increase of the rolling speeds in order to reduce the space required for the rolling device and an increase in profitability and an improvement in the operating mode.

The rolling device according to the invention is thereby able to achieve the object characterized in that the rolling bodies are driven to rotate around the axis of the rolling stock Rotors are stored.

The invention thus essentially consists in the fact that two components of movement are superimposed, namely on the one hand the movement component of the rolling elements in Direction of advance of the rolling stock, which causes the rolling stock to be advanced, and secondly, a movement component revolving around the rolling stock axis, which in the essential for the actual rolling process. As a result of the circulation the rolling bodies around the rolling stock axis are therefore no longer the cross-section to be formed of the rolling stock, appropriately profiled or calibrated pairs of rollers are required.

An essential advantage of the arrangement according to the invention is that that, compared with conventional rolling devices, the feed rates of the rolled stock is considerably enlarged and significantly smaller waiz tolerances are achieved can be.

According to an advantageous embodiment, for example, the rolling bodies be designed as a roller disk with preferably convex outer surfaces, whereby the manufacture of the rolling elements is considerably simplified. In addition, are the rolling devices according to the invention compared with conventional ones in significantly smaller dimensions, easier and more economical to manufacture.

According to another advantageous embodiment, each whale body can comprise several balls on the periphery of a central support roller, preferably between two support rings are stored. Such arrangements come in handy no slippage of the individual rolling elements along the circumferential surface of the rolling stock 0 This increases the service life of the rolling elements, whose wear only increases with extreme high wear can have an unfavorable effect, considerably increases, the rolling elements can also consist of hard metal or ceramics, which can be considered in the Have dimensions manufactured economically.

According to a further advantageous embodiment of the invention, can each roller body comprise at least one ball or roller, which is eccentric in the Front face of its rotating around the axis lying perpendicular to the direction of advance of the rolling stock Cylinder is stored. Depending on the material diameter to be processed and the Choice of eccentricity, the balls or rollers are shorter or longer in the Working area of the material, with each ball or roller during one revolution around the axis lying perpendicular to the direction of advance of the rolling stock once with relative high speed impinges on the rolling stock, determine in this up to one Perimeter penetrates and during its further rotation the rolling stock in the feed direction takes away. In such an embodiment of the individual rolling unit are preferably a plurality of rolling units arranged closely one behind the other, wherein the cylinders, which are perpendicular to the direction of advance of the rolling stock, and thus the rolling bodies rotate from unit to unit by a certain angular amount against each other are offset. With such an arrangement, larger Machine roll material diameter dimensions and high cross-section reductions achieve.

With corresponding combinations of rolling units and rolling element adjustments such arrangements can be used both for rolling and for straightening, polishing or use straightening and polishing.

The rotary drive of the rolling elements in the direction of advance of the Rolled stock can advantageously be driven by belts or gearwheels To derive the rolling stock revolving revolvers, for this purpose can advantageously each roller body within its rotor on or at one end of a roller body shaft or a cylinder, a drive pinion being provided at the other end is that engages in a fixed ring gear or with one with the rotor umlaufYs # n% wiUchenritzel meshes that meshes with the fixed toothed pinion.

By suitable selection of the gear ratio between the fixed The gear rim and the rolling elements can use the orbiting spiral according to the most favorable values the angle function can be selected.

In order to ensure that the rolling bodies are each in the same feed direction act on the rolling stock, the drive pinions or intermediate pinions engage opposite one another Rolling bodies each in one of two opposing ring rings.

The exact centering of the roller bodies or their adjustment to the Rolling stock can preferably take place in such a way that the rolling body shafts or cylinders Bearing in the circulators by means of eccentrically adjustable slide or roller bearings are, or in that the rolling body shafts are adjustable in the direction of their axis are.

This adjustment of the rolling body shafts or cylinders in the direction of their Axis is preferably done so that each roller body shaft od over a ball. Like. Supports on two round rings or polygonal rings, the distance between them is adjustable from the outside, preferably hydraulically, for centering the intermediate pinion for the rolling element shafts, these intermediate pinions can also be connected via balls or the like, Support on the round or polygonal rings, The adjustment of the rolling elements to the Rolled stock can also be done in such a way that the bearings of the rolling body shafts in are adjustable in the radial direction, preferably on each roller body shaft bearing at least one pressure element, which is guided to the outside through the rotor, acts is supported by a support ball or roller on the round or polygonal rings.

To ensure that the rolling stock passes through the rotating rolling elements does not experience twisting when it is deformed, it can also be provided that the rotors of Yalz units lying one behind the other partly in the same direction, partly in opposite directions revolve around the rolling stock.

The reduction in the rolling stock is taken into account once that the radial distance of the rolling body periphery or jackets from the rolling stock axis decreases from roller group to roller group. The reduction of the rolling stock can be used for others are also taken into account in that the rotors of Walzaggre gat are drivable to rolling unit with different rotational speeds, so that the rotors lie one behind the other of the rolling units each one of the reduction correspondingly higher rotational speed than the previous ones.

In a further embodiment of the invention it can be provided that the individual roller group each made up of several opposing roller pairs consists, which is preferably in two planes one behind the other by half the circumferential angle are arranged offset to each other and their shafts are each radial opposite. This ensures that the outer surface of the rolling stock is denser Sequence of the shells of the rolling body is detected, whereby in connection with the Go around the circuit a perfect round cross-section is achieved.

To relieve the roller bearings and the roller bodies can be provided be that the rolling bodies are each mounted radially outward from in the revolvers Support rollers or support rings are supported. The rolling units are preferred can be attached to roll stands by means of easily detachable locking devices, which are preferably can form part of the roll stand. With such an arrangement it is It is remarkable that after releasing the lock, the rolling units e.g. when changing programs quickly removed from the roll stand and replaced with new units If a comprehensive rolling program with short changeover times is desired, can preferably also several rolling units with their revolvers in one to one Axis rotatable magazine be mounted, which can be locked in several working positions is such that at the same time the Unilaufkörper from several rolling units to Formation of parallel working lines can be driven from the outside, In this way several profiles can be edited at the same time, the same or from one another have different dimensions. Switching from one profile dimension to one other is by simply rotating the magazine and positioning what you want in each case Rolling unit to a drive unit possible in a very short time. The space saving such an overall machine is opposite to the conventional rolling mill arrangement considerable, because the individual working lines require less space and spacing each other, and the magazine the already set Eraate whale te contains. There is still the possibility of height and side adjustment by rotating the magazine and shifting it sideways including the Drive to adapt to the different profile diameters and the working level, what with conventional systems so far only with large machine expenditure was possible.

The drive elements for the rolling units can be pivoted and / or radially displaceable to di, e drive transmission members he university run he adjustable be.

The invention is explained below with reference to the drawing, in the possible Embodiments are shown in an exemplary manner, described in more detail. It 1 shows a sectional view of a rolling unit perpendicular to the rolling stock axis e; 2 shows a partial sectional view parallel to the axis of the rolling stock, with two rolling units arranged one behind the other and the roller bodies only shown schematically are; 3 shows an illustration of a rolling unit corresponding to the illustration in FIG. 1 with modified rolled bodies; Figure 4 is one of Big's representations. 1 and FIG. 3 corresponding representation of a rolling unit with a modified rolling body bearing; 5 shows a detail of the embodiment, partly in section and partly in view of Fig. 4 on an enlarged scale; Fig. 6 is a sectional view along the line VI-VI in Fig. 5; FIG. 7 shows a view comparable to the illustration in FIG. 5 modified embodiment of the roller body arrangement; Fig. 8 is a view in the direction of the arrow VIII in Fig. 7 Fig. 9 is a schematic representation of a roll stand with drive units and rolling unit; Fig. 10 is a sebematic view of a roll stand arrangement 'with several rolling units arranged in a rotatable magazine and FIG. 11 a representation of a modified roll stand arrangement comparable to the representation of FIG. 6.

According to Jlig. 1 and 2 show the individual rolling unit casing 1 with end caps 2 and 3 and bearing rings 4 and 5. In that way formed housing are mounted two rotors 6, these rotors protrude according to Fig. 2 through the bearing rings 4 and 5 and the cover plates 2.3 to the outside and point at their outwardly projecting ends drive elements, either in the form of pulleys 7 or in the form of gears 8, depending on whether the drive of the rotor means Belt 9 Q which is to be carried out by means of a toothed drive.

According to FIG. 1, four roller bodies are in shape within each rotor 6 housed by roller disks 10 with convex outer surfaces. Every roller disc sits at the inner end of a roller body shaft 11, the axis of each roller body shaft is perpendicular to the feed direction and to the axis of the rolling stock 12. The four roller disks 10 are symmetrically distributed around the rolling stock axis serum and move when driven of the circulator 6 2 '; feet of the rolling stock and reduce this to the clear, Round cross-section located between the roller disks 10.

The outer ends of the rolling body shafts 11 are provided with a drive pinion 13 provided, which is in mesh with an intermediate pinion 14 with the Circulator 6 also rotates. Each intermediate pinion 14 meshes with one of the two ring gears 15 or 16, which are housed stationary in the housing, preferably on the bearing rings 4 and 5 or an intermediate bearing ring 17.

As soon as the rotor 6, depending on the type of drive selected, via the pulley 7 or the gear 8 is driven, the gear wheels 15 and 16, respectively meshing intermediate pinion 14 set in rotation and drive in turn about the Drive pinion 13, the rolling body shafts 11 and thus the Walsenscheiben 10, wherein the correct direction of rotation of the roller disk 10 resting on the rolling stock 12 is thereby achieved is that the intermediate pinion 14 opposing roller disks 10 according to the illustration of Fig. 2 once in the fixed the ring gear 15 or engage the stationary ring gear 16.

In order to introduce the rolling stock between the individual roller disks 10, the rotor is provided with funnel-shaped openings 18.

According to Yig. 2 two rotors 6 are housed in one housing, which are driven intimately with the same direction of rotation or, preferably, in opposite directions can to counteract torsional moments in the rolling stock. When driven in opposite directions Rotators 6 are the intermediate pinions 14 in a suitable manner one of the two to deliver opposing sprockets to determine the feed and conveying direction of the rolling stock depending on the direction of rotation of the roller discs 10.

For the exact centering of the roller disks 10 or for their adjustment The rotating rolling body shafts 11 are supported on the rolling stock 12 via a ball 19 or the like on two round rings or ivIebrkantringea 20, the distance between them Can be changed up or down without interrupting the current work process is, so that all four rolling body shafts 11 when changing the distance between the rings 10 can evenly approach the rolling stock axis or move away from it.

The change in the distance between the rings 20 can be mechanical or1 as already mentioned, take place hydraulically, namely in the in Yig. 2 schematically illustrated manner by means of the piston or pressure body 21, which via a hydraulic system 22 and pressure lines 23 can be acted upon with hydraulic fluid. The through the Pressure lines 23 passed through the wall of the cylinder housing 1 open into only schematically pressure cylinders shown, which are located essentially between the bearings or intermediate bearing rings 4, 5, 17 and the piston 21 are located.

The bearings of the rotors or the roller body shafts 11 are carried out by means of Plain bearings or a roller bearing.

An exact radial adjustment of the roller disks 10 to the rolling stock 12 is also possible in that the sliding or roller bearings 24 are eccentric are adjustable in such a way that by changing the arrangement of the bearings the distance can be changed between the rolling stock axis and the rolling body shaft axes. Dte radial The rollers are adjusted when roller wear occurs or when a program is changed or change of rolling stock expedient, whereby the change in the center distance is preferred from the outside is possible with a rotating rolling mill.

The embodiment according to FIG. 3 differs from the embodiment according to the i? ig. 1 and 2 primarily in that instead of the roller disks 10 rolling bodies are used, which comprise several balls 25, which at the periphery a central support roller 26 are accommodated, with possibly additional Support rings (not shown) can be provided. The mechanism for propulsion the rolling body formed by the support rollers 26 and balls 25 is otherwise correct with the mechanism illustrated with reference to FIGS. 1 and 2.

imine another special feature in the embodiment according to blig. 3 lies nor in the manner of the rolling element adjustment to the rolling stock 12 by means of the Roller adjustment elements 27, which essentially with the round or polygonal rings 20 are comparable to the first described embodiment of the invention. These Roller adjustment elements 27 serve to support support rollers or centering balls 28 and 29, on the one hand for centering the Swisebenritzel 14 and on the other hand serve to adjust the roller bodies 25, 26 by placing the balls 29 on the pressure body 30 act, through the adjustment of which the bearing elements 31 of the rolling body shafts 11 changed in their position are. The simultaneous adjustment the intermediate pinion 14 and the Walskörperwellen serves to the backlash between to keep the drive pinions 13 and the intermediate pinions 14 constant.

If greater ways of rolling body adjustment are required, one will expediently separate the joint employment in each separate employment, see above that the backlash can be kept constant.

In the embodiment according to FIG. 4, the rotor 6 takes two cylinders 46 (shown in full lines), and each cylinder 46 serves on its after inwardly directed end face for receiving a ball representing the rolling body 47, which is eccentric to the axis of rotation 48 of the cylinder 46 0 Each ball 47 is supported by one or more support rollers 49.

The individual cylinder 46 carries the drive pinion at its outer end 13, which meshes with a ring gear arranged in a stationary manner in the rolling unit stands, with the centrally opposite drive pinions each in separate Gear rims engage, as has been described above with reference to FIG. 2. In the embodiment according to FIG. 4, in a manner comparable to that of the Embodiments according to FIGS.

1 to 5 between each drive pinion 13 and the stationary ring gear Be interposed intermediate pinion. The rolling bodies 47 are employed in a manner comparable to the embodiment of Figures 1 and 2, e.g. about balls 19, which are supported on two round rings or polygonal rings.

In Fig. 4 dind dind dashed two further cylinders with the associated Organs such as drive pinions and roller bodies are shown to make it clear that In each case several rolling units one behind the other and offset with respect to their angular position are arranged to each other in order to encompass the rolling stock of a plurality of rolling bodies and thereby to achieve an exact support of the same. There is the Possibility of several groups of rolling elements, each of which consists of two roller bodies 47 cooperating in pairs, in a common rotor 6 to be arranged one behind the other, or a separate one for each group of rolling bodies and to provide rotators that can be driven independently.

If in the embodiment of FIG. 4, the rotor 6 to a is driven around the rolling 12 revolving rotational movement, the individual mesh Drive pinion 13 with the respectively assigned stationary ring gear, whereby each Cylinder 46 to a rotational movement ul the axis 48 is driven. At this Rotational movement of the cylinder 46 about the central axis 48 comes the respective ball 47 on a certain part of their path of movement against the rolling stock 12 to the plant or engaged therewith, whereby the rolling stock 12 in the corresponding Vorllbrichtung is moved forward.

In FIGS. 5 and 6, the cylinders are enlarged 46 with the whale bodies 47 and support rollers 49 inserted therein. To the The roller bodies 47 and backup rollers 49 are inserted and held in place as roller body holders 50 inserted into corresponding recesses on the face of the cylinder 48 and locked, this roller body holder 50 suitable recesses for receiving the roller body 47 or

Have support rollers 49, according to FIG. 6, the center axes of the opposite cylinder 46 slightly offset from one another.

In the embodiment of FIG. 7 are in the cylinder 46 instead a single roller body 47 several roller bodies 47 in Por of a ball or Rolling crane forming balls 47 or rollers inserted into the end face of the cylinder 46, so that with each revolution of the cylinder 46 about its axis of rotation 48 all Balls of the ball ring act on the workpiece 12, whereby a reinforced Machining of the workpiece takes place. The embodiment according to Figures 7 and 8 ways nor the peculiarity that on the workpiece 12 in addition dep balls or rollers 47 of the cylinder 46 a conical roller, disk 51 acts, which is arranged comparable to the cylinder 46.

In Fig. 9, a roll stand 32 is shown schematically, which a Stand 33 includes, in which the easy-to-operate locking devices 34 held, quickly removable and easily exchangeable rolling unit 35 stored is. The rolling unit 35 contains at least one rotor, one of which is shown schematically the gear 8 is shown as a drive transmission member. The drive transmission member respectively.

Gear 8 engages in the drive pinion 36, \ which e.g. via the animals 37 can be driven by the motor 38. If necessary, the gear 8 can also two drive units 36, 37, 38 act, which may be the same or different Can cause direction of rotation when several rotors are rolling units lying one behind the other are to be driven.

In the embodiment according to FIG. 10, several are shown schematically Rolling units 35 housed in an iflagazin 40 which can be rotated about the axis 39. This magazine 40 is mounted in a stand 41 which runs along a rail 42 is displaceable on the base 43. The base 43 carries as shown in FIG Fig. 10 shows a drive unit consisting of the elements 36, 37 and 38, each of which after the rotary position of the magazine 40 can be placed on one of the rolling units. There is advantageously the possibility of also on the other side of the Stator 41 to arrange a drive unit consisting of elements 36, 37 and -38, so that a second rolling unit can also be put into operation.

In the embodiment of Fig. 11 are also in a rotary or pivotable magazine 44 mounted several rolling units 35, which along the Guide base 46 displaceable drive units can be delivered.

The following advantages are achieved through the use of magazines: 1. High performance through multiple working lines, creating multiple profiles at the same time can be edited. These profiles can be the same or different from one another Have dimensions.

2. Quick program change and short change times thanks to simple Rotation of the magazine.

3. Saving of space because the working lines are in contrast to the previous ones systems used have only a small distance from each other.

4. Height and side adjustment by rotating the magazine and sideways Displacement in particular in the arrangement according to FIG. 10, including the drive, with different diameters.

5. No expensive storage of replacement units.

The various rolling units shown and described in detail can be combined with each other in various ways, depending on the requirements. They can also be used together with conventional rolling mills.

Claims (22)

P a t e n t a n s p r ü c h e 1. Rolling device for rolling, polishing or straightening rod-shaped or tubular rolling stock, preferably with several one behind the other Rolling units which are provided with groups of rolling bodies, each of which consists of at least two rolling bodies arranged symmetrically to one another around the rolling stock axis exist that rotate about axes that are substantially perpendicular to the feed direction of the rolling stock, characterized in that the rolling bodies (10 or 25, 26 or 47) mounted in rotors (6,) which are driven to rotate around the rolling stock axis are, 2. Rolling device according to claim 1, characterized in that the rolling bodies are designed as roller disks (10) with preferably convex lateral surfaces. 3.'Walzvorrichtung according to claim 1, characterized in that each Rolling body comprises several balls (25) or rollers, which on the periphery of a central Support roller (26) are preferably mounted between two support rings0 4 rolling device according to claim 1, characterized in that each roller body has at least one ball (47) or roller, which is eccentric in the end face of one around the perpendicular mounted to the rolling stock feed direction lying axis rotating cylinder (46) is. 5. Rolling device according to one of claims 1 to 4, characterized in that that the rotary drive of the rolling bodies (10 or 25, 26 or 47) in the direction of the The feed of the rolling stock (12) is derived from the Umlälifern (6) rotating around the rolling stock will. 6. Rolling device according to claim 5, characterized in that each Rolling bodies (10 or 25, 26 or 47) within the circulator (6) on or on one End of a Walikkörperwelle (11) or a cylinder (46) is mounted, with the the other end a drive pinion is provided, which is in a fixed ring gear intervenes. 7. Rolling device according to claim 5, characterized in that each Rolling bodies (10 or 251 26 or 47) within the circulator (6) on or on one The end of a roller body shaft (11) is mounted, which has a drive pinion (13). carries that with a rotating with the rotor (6) intermediate pinion (14) meshes, which engages in a fixed ring gear (15 or 16). 8. Rolling device according to claim 6 or 7, characterized in that dak the drive pinions or intermediate pinions (14) of opposing roller bodies each engage in one of two opposing toothed rings (15 or 16). 9. Rolling device according to claim 6, 7 or 8, characterized in that that the rolling body shafts (11) or cylinder (46) by means of eccentrically adjustable Plain or roller bearings (24) are mounted in the rotors. 10. Rolling device according to one of claims 6 to 9, characterized in that that the rolling body shafts (11) are adjustable in the direction of their axis. 11. Rolling device according to claim 10, characterized in that Each roller body shaft (11) or each cylinder (46) extends over a ball or roller (19) is supported on two round rings or polygonal rings (20), the distance between them can be adjusted from the outside, 12. Rolling device according to claim 11, characterized in that the distance between the rings (20) is hydraulic is adjustable. 13. Rolling device according to claim 10 or 11, characterized in that that the intermediate pinion (14) on balls (28) on the round or ldebrkantringen (20 or 27) are supported. 14. Rolling device according to one of claims 11 to 13, characterized in that that the bearings (31) of the roller body shafts (11) are adjustable in the radial direction. 15. Rolling device according to claim 14, characterized in that on each} {alzkörperwellenlager (31) at least one by the rotor (6) after externally guided pressure member (30) acts, which is via a support ball (29) or Roll is supported on the customer or polygon @@ ngen (20 or 27). 16. Rolling device according to one of claims 1 to 15, characterized in that that the roll body adjustment is separated radially and parallel to the rolling stock axis is feasible. 17. Rolling device according to one of claims 1 to 16, characterized in that that the rotors (6) of successive rolling units are partly in the same direction, partly rotate in opposite directions around the rolling stock (12). 18. Rolling device according to one of claims 1 to 17, characterized in that that the rotors (6) can be driven at different rotational speeds. 19. Rolling device according to one of claims 1 to 1 @, characterized in that that the roller bodies each radially outwardly on support rollers mounted in the Umlätifer or support rings are supported. 20. Rolling device according to one of claims 1 to 19, d ad u r e It is noted that the rolling units (35) are easily detachable by means of Locking devices (34) can be attached to roller frames with their rotors (5) can be used on drive units (3 £, 37, 3b '). 21. Rolling device according to one of claims 1 to 20, characterized in that that several rolling units (35) with inrem rotors (6) in one about an axis of rotation rotatable Ilagazin (40 or 4.4) are stored in several working positions can be locked in such a way that at the same time the circulating body (6) of several rolling units (35) can be driven from the outside to form parallel working lines. 22. Rolling device according to claim 21, d a d u r c h g e k e n n z e i c hnet that the in-triebsorbane (3 £, 37, 33) for the circulator (b) can be pivoted and / or can be adjusted to the rotors in a radially displaceable manner. L e r s e i t e