JP2775029B2 - Apparatus for inclined rolling of tubular or rod-shaped material to be rolled - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises two or many rolls which are driven to rotate around the longitudinal axis of a material to be rolled, and the roll axes of these rolls are aligned with the longitudinal axis of the material to be rolled. The material extends at an angle to the material to be rolled and is viewed in the direction of the longitudinal axis of the material to be rolled or in the direction opposite to the longitudinal axis of the material to be rolled in order to feed the material to be rolled. Tubular or rod-shaped material to be rolled which is radially spaced from the longitudinal axis of the rolled material, in which case the rolls are driven by a sun wheel arranged around the longitudinal axis of the material to be rolled. To an apparatus for tilt rolling of steel.

[0002]

BACKGROUND OF THE INVENTION Apparatus for tilt rolling is mainly used in the production of seamless steel pipes, for example for drilling circular blocks and for producing relatively thick hollow blocks, or for removing such hollow blocks. It is used for stretching while reducing its thickness or for expanding the diameter of a coarse tube.

[0003] Furthermore, such devices are used for drawing and surface-reducing rod-shaped, ie solid, materials to be rolled. In a conventional apparatus of this type, the material to be rolled is rotated between rolls which rotate in the same direction of rotation and is formed.
In order to continuously feed the material to be rolled in the longitudinal direction, the roll axis is provided at a certain turning angle with respect to the longitudinal axis of the material to be rolled, and therefore, the force in the direction of the roll longitudinal direction is determined from the peripheral speed of the roll. The material to be rolled moves in the direction of the vertical axis while twisting between the rolls. Such devices have two or many driven rolls. In this case, when only two rolls are provided, lateral guidance is required between the rolls so that the material to be rolled stays in the region of the roll axis and does not fly out in the radial direction.

[0004] In such an apparatus, a barrel-shaped roll is used, and the roll axis of the roll is oriented parallel to the longitudinal axis of the material to be rolled. It is also known to use conical rolls, in which case the roll axis extends obliquely with respect to the longitudinal axis of the material to be rolled.
The inclination angle between the roll axis formed by this arrangement and the longitudinal axis of the material to be rolled must not be confused with the above-mentioned turning angle.
This is because the rolled material does not feed in the axial direction without the roll axis turning.

In the above apparatus, the material to be rolled rotates about its longitudinal axis, which causes some problems. First of all, the rolling motion of the material to be rolled is performed only in an unstable manner, so that only a limited length of the material to be rolled can be rolled in order to avoid damage to the material to be rolled and the equipment. It is. Secondly, it requires an expensive guide device for the material to be rolled and for the optional internal tools. Third, the threading rate of the material to be rolled, and thus the efficiency of the device, is limited to a narrow range. The feed rate of the material to be rolled is determined by the feed speed for the material to be rolled, and this feed speed is obtained by the peripheral speed and the turning angle of the material to be rolled. Since the turning angle must not exceed a certain value, since the surface of the material to be rolled becomes non-uniform, especially in the form of a waveform, the threading rate of the material to be rolled can be increased only by increasing the peripheral speed. is there. Therefore, the number of rotations of the material to be rolled also increases. This results in a non-quiet rotation of the material to be rolled, which also leads to damage to the material to be rolled, mechanical failure and increased wear. In addition, the material to be rolled must be further accelerated during rolling because of the relatively high speed of the rolls. This leads to slippage of the roll, which leads to grip problems. Fourth, the rolled material rotating about its longitudinal axis is supported by a continuous finish rolling in a vertical roll stand provided at a short interval thereafter.

In order to eliminate this drawback, the roll is rotated not only about the roll axis but also about the longitudinal axis of the material to be rolled by taking the kinematic principle of inclined rolling as a disadvantage. I've been doing so. This allows
It is no longer necessary to rotate the material to be rolled about its longitudinal axis. The rolls roll on and around the material to be rolled in a planetary motion.

[0007] Such a device is disclosed in US Patent 1,368,
No. 413, in which the rolls are mounted in a rotating housing on a roll axis, which is driven by a rim and a pinion. The shaft driving the roll is provided with a number of gears at the end opposite the roll, whereby the gears roll on the sun gear in the manner of a planetary gear train. The sun wheel is also driven. By appropriately determining the number of rotations of the roll and the number of rotations of the rotating housing, the roll rolls on the material to be rolled without rotating the material to be rolled. The roll of this known construction is formed in a barrel shape, the roll axis extending in a plane lying parallel to the longitudinal axis of the material to be rolled. However, in this plane, the roll axis is turned by a certain angle with respect to the longitudinal axis of the material to be rolled, whereby the feed movement of the material to be rolled is performed. The axis of the planet gear also extends at this angle in the longitudinal axis of the material to be rolled, but lies in the plane containing the longitudinal axis of the material to be rolled. Thus, the roll drive shaft between the planet gears and the rolls has a coupling clutch at their ends. In order not to make the buckling angle of the coupling clutch too large, the roll drive shaft is set relatively long. This likewise lengthens the structure of the rotating housing. In particular, a long roll drive shaft is subject to the effects of centrifugal force and rotational moment when the rotating housing rotates, thereby limiting the housing rotation speed.

[0008] Published German Patent Application No. 160
FIG. 1 of No. 2153 shows a device having basically the same characteristics as described above. Another structure is known from FIG. 2 of this publication. In this configuration, the roll is formed in a conical shape, and the roll axis extends at an angle to the longitudinal axis of the material to be rolled. The heads of these rolls are movably supported, and the heads are provided on the end face side of a rotor housing that rotates about the longitudinal axis of the material to be rolled. The rotor housing is driven via a rim. The roll itself is driven via a number of gears or gear transmission mechanisms provided one after another so as to be spaced apart from the longitudinal axis of the material to be rolled in the radial direction. , And the sun wheel rolls along the sun wheel due to the rotational movement of the rotor housing on which the sun wheel is mounted. As is clear from the specification of U.S. Pat. No. 1,368,413, in this known construction the sun wheel is rotated by a separate drive mechanism. The number of rotations of the sun wheel and the number of rotations of the rotor housing are set such that the rolls roll on the material to be rolled, and in this case, the material to be rolled does not rotate. The aforementioned inclination of the roll axis alone with respect to the longitudinal axis of the material to be rolled is not enough to feed the material to be rolled. The feed of the material to be rolled is performed by turning a head provided on the rotor housing so as to turn around a bevel gear. The turning angle formed by such a method cannot be recognized from FIG. 2 of the above publication. In general, this construction has three rolls for rolling tubular or bar-shaped materials to be rolled.

The last-mentioned construction is very expensive due to its roll drive mechanism. The gears of the roll drive mechanism, which are provided stepwise outward so as to be spaced apart from the longitudinal axis of the material to be rolled in the radial direction, have a rotating rotor housing of about 3 to 3 depending on the cross-sectional size of the material to be rolled. It is possible to have a large outer diameter with a value of 5 meters. This large rotor housing has a roll, a roll shaft, a head carrying the bearings of the roll shaft and the drive wheels, and therefore has a large outer diameter and thus an abnormally large rotating mass. . Due to the centrifugal force, the number of revolutions of the rotor housing with such a head is very limited and therefore the feed speed of the material to be rolled is also limited. Therefore, the amount of material to be rolled per unit time and the efficiency are reduced. By setting the dimensions of the head and the rotor housing large, and by relatively increasing the spacing of the pivot axis of the head from the respective roll axis, accurate adjustment of the roll position and maintenance of the fixed position can be achieved. This is especially difficult because the different elasticities of the rolls under load must also be taken into account. Since the gears of the roll drive mechanism are provided stepwise in the radial direction, the bevel gear drive mechanism for the relatively outwardly positioned roll comprises the device and the shaft of the rotor housing and head. It is required that the roll axis must be extremely steeply inclined with respect to the longitudinal axis of the material to be rolled so that the length in the direction is not further increased. The inclination of the roll axis with respect to the longitudinal axis of the material to be rolled is itself advantageous, but if the inclination is too steep, the roll has a significantly reduced roll outer diameter, especially in the roll tip region, especially as if crushed. That is, it must have a shallow conical shape. There are smooth and circular zones of the roll at locations where significant diameter reduction is particularly disadvantageous. In this position, there is an incentive for the rolls to undesirably swivel the rolled material during rolling. In the known construction, this danger arises because the roll axis is necessarily steeper in the above-mentioned position, and this results in a conditioned roll having a shallow cone.

[0010]

SUMMARY OF THE INVENTION The present invention starts from the above-mentioned known design and comprises two or many rolls which are rotated about the longitudinal axis of the material to be rolled. The roll axis extends at an angle with respect to the longitudinal axis of the material to be rolled, without the disadvantages of known constructions and despite the relatively small dimensions. It is an object of the present invention to provide an apparatus for rolling a rolled material in the form of a tube or a rod, which can achieve a high efficiency.

[0011]

According to the invention, the above-mentioned object is achieved in that the rolls are driven via only one drive wheel each engaging the sun wheel and surrounding the respective roll axis, and The problem is solved by the bevel having bevel gear teeth offset with respect to the roll axis.

According to the invention, the feed of the material to be rolled is not carried out by turning the roll and the roll axis at a certain swivel angle with respect to the longitudinal axis of the material to be rolled, as in the known construction. When viewed in the direction of the longitudinal axis of the material to be rolled, the roll axis extends in each one plane, which is located parallel to the longitudinal axis of the material to be rolled and spaced apart in the radial direction. In such a case, it is recognized that the turning as described above does not have to be performed. Of course, this new roll axis arrangement allows the roll axis to extend at an angle to the longitudinal axis of the material to be rolled in the plane, i.e., the roll is essentially conical or cut. Only when it is formed in a frustoconical shape, the desired material to be rolled is fed. In the case of a barrel or cylindrical roll in which the roll axis does not form an inclination angle, the material to be rolled is not fed without a turning angle. However, when a conical roll is used instead of this configuration, that is, when the roll axis extends at a certain inclination angle with respect to the longitudinal axis of the material to be rolled, the material to be rolled is oriented in the direction of the longitudinal axis. It is not necessary to additionally apply a swivel angle as in known constructions driven by.

According to the invention, the roll axis is displaced laterally parallel to the longitudinal axis of the material to be rolled and parallel to the longitudinal axis of the material to be rolled at an inclination angle which cannot be recognized in this field of view. By virtue of the arrangement, the device is made very compact. Because with this arrangement,
This is because it is possible to provide a drive mechanism for the rolls which are directly engaged with the sun wheel on each roll axis and roll on the sun wheel. This makes it unnecessary to provide any link shaft or any link joint,
Alternatively, there is no need to insert a gear between the sun wheel and the roll axis. To shift the roll axis parallel to the side,
In the case of the drive gear and the sun wheel, only an axially displaced bevel gear known from other applications is required. Along with this, a number of device parts are omitted, the mass rotating about the longitudinal axis of the material to be rolled is reduced, and the interval between the device parts provided from the longitudinal axis of the material to be rolled can be reduced. And the centrifugal force generated thereby is significantly reduced, so that the device is not only significantly smaller when the cross section of the material to be rolled is constant, but also at a significantly higher rotational speed around the longitudinal axis of the material to be rolled. In this way, a high threading rate of the material to be rolled, ie a significantly improved efficiency, is achieved. In the configuration according to the present invention, the inclination angle between the roll axis and the longitudinal axis of the material to be rolled can be made relatively small, whereby the drive gear can be made small, and thus the entire apparatus can be made compact. Not only does the roll have a pronounced conical shape, but the roll becomes more cylindrical. In the form of this roll, the diameter of the roll is not significantly reduced, especially in the region of its smooth and circular zones, so that it is easier to roll the material to be rolled--especially in this region when rolling thin-walled tubing. -A turn is avoided.

In an advantageous embodiment of the invention, a drive gear meshing with the sun gear is provided for reliable rotation directly on the shaft carrying the roll. In this configuration, it is not possible to adjust the radial distance of the roll or roll axis from the longitudinal axis of the material to be rolled, so that the feed of the material to be rolled is constant. In this embodiment, when the drive gear is provided on the shaft holding the rolls so as not to slide even in the axial direction, it is necessary to maintain the meshing of the gears. , And the accompanying sliding of the roll in the axial direction is impossible. But,
When using inserts of different thicknesses between the roll and the shaft carrying the roll, the roll is still axially adjustable in this embodiment, so that the roll is oriented with respect to the rolled material axis. The outer diameter of the material to be rolled can also be adjusted because it is provided inclined. When rolling tubing, the thickness of the material to be rolled can be adjusted to the desired dimensions by appropriate selection of the diameter of the tool present therein, which is generally faster than roll adjustment. The object can be easily and precisely approached and the disadvantageous modification of the cylindrical smooth caliber is avoided. In particular, in the case of this simple embodiment, a specially compact device is produced which has a high stiffness against the rolling forces that occur.

On the other hand, the drive gear meshing with the sun gear has a hollow toothed portion in the region of the boss, and the external tooth of the shaft carrying each roll is engaged with the hollow toothed portion. Combine. This hollow tooth is mounted in a rotatable eccentric bush and is adjustable transversely to the longitudinal axis of the drive gear and the material to be rolled. In such an arrangement of the apparatus, the radial spacing of the roll axis from the longitudinal axis of the material to be rolled is adjustable, and therefore the feed of the material to be rolled is also variable.

In an advantageous embodiment according to the invention, the roll is movable in the direction of its roll axis.
This is achieved, in particular, by means of a continuously adjustable bearing which can slide in the axial direction, in particular of the shaft carrying the roll. In this way, the smallest diameter, which is commonly limited by all rolls, can be changed and the finished diameter of the material to be rolled can be changed. The longitudinal movement of the shaft and the roll with respect to the roll axis is
It is also possible to combine this with the above-mentioned lateral movement of the roll axis, so that the outer diameter of the material to be rolled and the feed amount can be changed in the device thus formed and in the apparatus. On the other hand, the movement of the roll in its longitudinal direction can take place via the insert in the manner already described above. The reworked roll can be brought back to the desired position by using another insert, in which case a high degree of accuracy and reproducibility of caliber adjustment can be achieved.

In addition to the movability described above with respect to the axial and radial movement of the roll or its roll axis, other structural solutions are possible. In a particularly advantageous embodiment of the invention, a total of four driven rolls are provided. The application of a four-roll configuration instead of the frequently applied three-roll configuration has the advantage that the cross-section of the material to be rolled is considerably more narrowly surrounded by the rolls. This in particular reduces the expansion of the material to be rolled between the rolls, especially when rolling thin tubing, and thus makes it possible to reduce the additional bending stresses of the material to be rolled and to prevent swirling. Further, in the case of four rolls, it is possible to set the diameter of the roll that surrounds the material to be rolled to a maximum extent smaller than in the case of three rolls.
A smaller rolling diameter results in a smaller rolling moment with a smaller roll diameter, thus making the roll drive mechanism and all parts of the rotor even smaller, easier to construct, and consequently a more compact device. The advantage is obtained. Therefore, in the device according to the invention, the use of a roll with a particularly small diameter means-
In this case, the problem that the roll diameter in the region of the smooth zone and the circular zone is reduced, that is, the turning of the material to be rolled becomes remarkable--no problem arises. This is because the device according to the invention allows for a particularly shallow tilt angle with a balancing effect.

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
Is shown in the figure. Solid bars are shown. However, the material to be rolled 1 may be a tube material or a rough perforated tube, in which a tool such as a mandrel may be present. The material to be rolled 1-only one roll 2 is shown in each of FIGS. 1 to 3 for easy understanding of the present invention-but is formed by a number of rolls 2 surrounding the material to be rolled 1 described above. Is done. The roll 2 rotates about a longitudinal axis 3 of the material to be rolled like a planet, and the longitudinal axis of the material extends perpendicular to the plane of FIG. At this time, the roll 2 rotates about the roll axis 4 and rolls on the outer surface of the material 1 to be rolled. In the case of the embodiment shown, the roll 2 is formed essentially conical, but has the form of two frustoconical cones mounted one above the other, with jacket surfaces having different inclination angles. Have. Such a structure is particularly well recognized from the side view of FIG. 2, in which the roll axis 4 extends at an angle to the longitudinal axis 3 of the material to be rolled. Is recognized. When the roll axis 4 and the longitudinal axis 3 of the material to be rolled are present in one plane only at the inclination angle known per se, the material 1 to be rolled is not fed in the axial direction. The pivot angles additionally used in the known constructions are therefore not applied in the present invention. This can be seen from FIG. From this front view, when viewed in the direction of the longitudinal axis 3 of the material to be rolled, the radial interval “E” is in the plane where the roll axis 4 is inclined.
And extending parallel to the longitudinal axis 3 of the material to be rolled. Contact point 5 between roll 2 and material 1 to be rolled
, It is confirmed that the roll peripheral speed 6 forms a force component 7 in the feed direction of the material 1 to be rolled. In the plan view of FIG. 3 too, a component 7 of this feeding force can be seen.

FIG. 4 shows a partial longitudinal section of the device, in which the roll 2 and its roll axis 4 are constructed in a manner according to the invention. Two rolls 2 are observed. On the other hand, of the four rolls in this embodiment, the other two rolls existing in the front and the rear are used to clarify the positions of these other two rolls 2. Here, it is illustrated.

The roll 2 is driven by power. This drive takes place via shafts 8 carrying the rolls, on which drive gear 9 is provided directly to ensure rotation. These drive gears 9 mesh with a sun gear 10, which surrounds the material 1 to be rolled. At this time, the bevel gear tooth 1
1 is used in the interval "E" (see FIG. 1). Sun gear 1
0 has an elongated drive bush 12 which couples the sun gear 10 with the gear 13 in a reliable manner, which is connected via a pinion 49 by a motor (not shown). Driven separately and controllably. The shaft 8 carrying the roll 2 is provided in the rotor 14 to ensure rotation, and the rotor itself rotates about the longitudinal axis 3 of the material to be rolled. This is because the rotor is rotatably mounted in the housing 15. The rotor 14 is driven by another pinion 16 which meshes with the rim 17 of the rotor 14 and is likewise separately driven by a motor (not shown).

FIG. 5-The configuration of the apparatus shown in FIG. 5 is exactly the same as that of the apparatus shown in FIG. 4, but only the bearing of the roller 2 is shown in an enlarged view in FIG. The same parts are indicated by the same reference numerals. However, the construction according to FIG. 5 allows the axial movement of the roll 2 by the movement of the shaft 8, whereas the structure of FIG. The axial movement of the roll is only possible with different inserts. Each of the rolls 2 is firmly fixed in the axial direction with a through bolt 18 provided in a central hole of the shaft 8. The radial ball bearings 19 and 20 allow a limited but sufficient axial sliding of the shaft 8. The drive gear 9 is screwed into a bearing bush 21 in this embodiment. This bearing bush is rotatably and non-slidably supported in a rotor 14 via a collar bearing 22 and a radial ball bearing 23. The rotor itself is supported in a housing 15 via a bearing 24. ing. The rotor 14 comprises bushes 25 and 26, which are the shaft 8 and the bearing bush 2 surrounding the shaft.
1 surrounding. These bushes 25 and 26 are screwed to the rotor 14 and rotate together therewith about the longitudinal axis 3 of the material to be rolled. In addition, bushes 25 and 2
6 is provided immovably. The same applies to the drive gear 9 and the bearing bush 21. The shaft 8 and thus the roll 2 and the threaded bolt 18 likewise make a rotary movement about the longitudinal axis 3 of the material to be rolled, but the last member is a roll relative to the remaining members, in particular the bushes 25 and 26. It is slidable in the direction of axis 4. At this time, a connection is formed such that the rotation of the roll 2 via the connecting bush 27 between the bearing bush 21 and the shaft 8 is reliably performed. This connecting bush 27 meshes on the one hand with the teeth 28 of the bearing bush 21 and on the other hand with the teeth 29 of the shaft 8 in the axial direction. Teeth 28 and 29 allow relative longitudinal sliding.
FIG. 5 shows a situation during the rolling operation. In this situation, the rotational movement is transmitted from the drive gear 9 to the roll 2 via the bearing bush 21, the connecting bush 27 and the shaft 8.

When the roll 2 is to be moved in the axial direction in the configuration of this apparatus, the rotor 14 is rotated to the adjustment position. The working cylinder 30 feeds the disk 32 by the bush 31 in the axial direction against the action of the pressing spring 33, so that the pressing bolt 34 engages with the third tooth 35 of the connecting bush 27, which rotates with the rotor 14. Combine to make sure. At that time, the pressing bolt 34 further presses the connecting bush 27 in the direction of the roll 2, and finally the bearing bush 2.
The first tooth 28 no longer meshes with the connecting bush 27. This also applies to the relatively long teeth 29 of the shaft 8. When the sun gear 10 is slowly rotated by its separate drive mechanism, the drive gear 9 rotates with the bearing bush 21 when the rotor is at rest. Due to the thread 36 between the bearing bush 21 and the shaft 8, the shaft 8 is
, And the roll 2 slides with the shaft 8. When the position of the shaft 8 is adjusted and the sun gear 10 is stopped, the load on the working cylinder 30 by the pressure medium is released, and the disk 32 is opened. Press spring 33
Slides the pressing bolt 34, and the other pressing spring 37 moves the connecting bush 27 to the working position again. In this working position, the teeth 28 are engaged and the shaft 8 and the roll 2 are driven again. The above also applies to each roll 2 and its bearing.

FIG. 6 shows a somewhat different embodiment of the device, but the same parts as in the device described in FIG. 5 have the same reference numerals, even if the configuration of the parts is slightly different. ing. In FIG. 6, for example, the teeth 28 of the bearing bush 21 are significantly longer than the teeth 29 of the shaft 8. The teeth 29 are only as long as the teeth on which the connecting bush 27 engages. If this connecting bush is moved in the direction of the roll 2 by the working cylinder 30, the teeth 29 are immediately disengaged due to their short length. The shaft 8 and the roll 2 together therewith are the sun gear 10
And the drive gear 9 is rotatable with respect to a bearing bush 21 which is held so as to ensure rotation.
It can be moved in the axial direction by the thread 36. At this time, the bearing bush 21 is rotated by a working cylinder 30 provided so as to be surely rotated through the bush 31, the teeth 45, the disk 32, and the connecting bush 27 and the teeth 28 screwed to the disk. It is held to ensure rotation.

FIG. 6 shows that the shaft 8 and the roll 2
It can be seen that the material to be rolled can be moved laterally with respect to the longitudinal axis 3. The drive gear 9 is connected to the connecting portion 44 of the rotor 14.
The inside is rotatably supported by a fixed bearing 38 and a movable bearing 39, so that it remains in an appropriate meshing state with the sun gear 10. However, in the area of the boss, the drive gear 9
Have hollow teeth 40 with which external teeth 41 engage. This concerns only a limited part of the surroundings indicated by reference numeral 42. Because the diameter of the external teeth 41 of the shaft 8 is
This is because it is clearly smaller than zero. As a result, a movement path of the shaft 8 is obtained. The shaft 8 is rotatably and fixably mounted in the rotor 14 in an eccentric bush 34, and the bush 25 is formed as such an eccentric bush in FIG. These eccentric bushes 25 and 34-
In these, radial ball bearings 23 and 20 are present. The shaft 8 and the roll 2 move in the lateral direction due to the turning. After turning the two eccentric bushes, loosen the screw 46,
The eccentric bushes are joined together by a connecting part 44 connecting them.

In the embodiment described above and shown in the drawings, the direction of threading of the material to be rolled is selected such that a converging arrangement of the rolls takes place. However, it is also possible to change the passing direction of the material to be rolled, that is, to arrange the rolls in a diffused manner. The latter embodiment corresponds to the case where the device is used, for example, as an extended roll stand for tubing.

[0027]

According to the present invention, there is provided a method for rolling a tubular or rod-shaped material to be rolled without the disadvantages of known constructions and with a relatively small size but with a high efficiency. A device is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of an arrangement according to the invention of a roll axis.

FIG. 2 is a side view of an arrangement according to the invention of a roll axis.

FIG. 3 is a plan view of the arrangement of the roll axis according to the invention.

FIG. 4 is a schematic view of the device according to the invention without any axial movement.

FIG. 5 is a schematic view of a device according to the invention in which the shaft is moving axially.

FIG. 6 is a schematic view of a device according to the invention in which the shaft is moving axially and radially.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rolled material 2 Roll 3 Longitudinal axis of rolled material 4 Roll axis 5 Contact point 6 Roll peripheral speed 7 Force component 8 Axis 9 Drive gear 10 Sun gear 11 Bevel gear tooth 12 Drive bush 13 Gear 14 Rotor 15 Housing 16,49 Pinion 17 Rim 18 Penetration bolt 19,20,23 Radial ball bearing 21 Bearing bush 22 Axial bearing 24 Bearing 25,26,31 Bush 27 Connecting bush 28,29,35 Teeth 30 Working cylinder 34 Press bolt 36 Screw Mountain 38 Fixed bearing 39 Movable bearing 40 Hollow tooth part 41 External tooth 42 Shaft peripheral surface position 43 Eccentric bush 44 Coupling part 45 Teeth 46 Screw

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hermann Meltner 41516 Grefenbroich, St. Bernhard Straße, 41 (56) References JP-A-60-187407 (JP, A) JP-A-5 JP-A-285502 (JP, A) JP-A-5-309401 (JP, A) JP-A-5-285505 (JP, A) JP-A-58-157508 (JP, A) JP-B-59-44124 JP-B-64 -9083 JP-B 63-33922 JP-B 1-37201 (JP, B2) JP-B 2-4361 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B21B 13/00 -13/22 B21B 19/00-19/16 B21B 31/02 B21B 1/16

Claims (4)

(57) [Claims] 1. A roll comprising two or many rolls driven to rotate about a longitudinal axis of a material to be rolled, wherein the roll axis of these rolls is at an angle to the longitudinal axis of the material to be rolled. It extends obliquely, and in order to feed the material to be rolled, in the direction of the longitudinal axis of the material to be rolled or in the direction opposite to the longitudinal axis of the material to be rolled, Radially spaced apart, in which case the rolls are driven by a sun wheel arranged around the longitudinal axis of the material to be rolled, for rolling a tubular or rod-like material to be rolled. In the device, the rolls (2) are driven via only one drive wheel (9) each engaging with the sun wheel (10) and surrounding the respective roll axis (4), and 9) is displaced with respect to the roll axis. An apparatus comprising: 11). 2. A driving wheel (9) meshing with a sun wheel (10) is provided on a shaft (8) carrying a roll (2) so as to ensure a direct rotation. The apparatus according to claim 1, wherein: 3. A drive wheel (9) meshing with a sun wheel (10) is provided with hollow teeth (40) in the boss region, and a shaft (2) carrying respective rolls (2) in the hollow teeth. The external teeth (41) of 8) are engaged, and this shaft (8) is bearing in the eccentric bush (25, 43), and the driving wheel (9) and the longitudinal axis (3) of the material to be rolled. The device according to claim 1, wherein the device is movable in a lateral direction with respect to. 4. The device according to claim 1, wherein the roll (2) is movable in the direction of the roll axis (4).