JP2013039620A - Method and apparatus for making cold-pilger-rolled tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for making which can be automated, and which enables the position of at least one deformation working tool to be adjusted during cold pilger rolling based on measurement data obtained during a deformation working process, and to provide an apparatus suitable for the method.SOLUTION: At least one position adjustment device 7 is operatively connected to at least one deformation working tool 4 that acts on a tube 8 from the outside, and the position adjustment device 7 is connected to a measuring device 5.

Description

  The present invention measures a rolling mandrel supported on at least one mandrel receiver, at least two deformation tools acting on the tube from the outside, preferably at least one outer roll, and measures the outer diameter of the tube during the deformation process. The present invention relates to an apparatus for manufacturing a cold pilger rolled tube using a rolling mechanism provided with a measuring device.

  The present invention further provides a rolling mandrel supported on at least one mandrel receiver, at least two deforming tools acting on the tube from the outside, preferably at least one outer roll, and the wall thickness of the tube during the deforming process. The present invention relates to a method for manufacturing a cold pilger rolled tube using a rolling mechanism including a measuring device for measuring.

  Cold pilger rolling of a tube is understood as a method of processing a seamless tube from an initial format to a final format. The purpose of pilger rolling is to reduce the outer diameter and wall thickness of seamlessly manufactured tubes. In this case, the raw material, the so-called raw tube, is generally guided through a pair of rollers, which are provided with a conical caliber and carry out rotational and feed movements intermittently on the raw tube. A rolling mandrel is disposed inside the base tube.

  Thereby, the tube is generally formed with a particularly narrow dimensional tolerance. During production, dimensional changes may occur in the product. If the tube diameter is likely to be outside the tolerance range or has already deviated, the rolling mechanism has traditionally been stopped and the rolling gap has been corrected. Rapid changes in dimensions may be overlooked in a sampling inspection. Further, whether or not the dimension correction is successful can be confirmed only when at least one other pipe is completely deformed or when the rolling mechanism is newly stopped for dimension management. Eventually, the rolling mechanism must be stopped, so production time is lost with each dimensional correction.

  In order to measure the diameter of the completed tube, an optical method, for example, a method using a laser light grating (Laser-Lichtitter) is suitable.

  The use of non-destructive measuring methods for the cold pilger rolling process is not known in the prior art, however. Rather, the measurement method used in the prior art further performs measurement after performing deformation processing and extracting the object to be inspected, and then changes the individual or multiple deformation processing parameters while taking into account the experience values. Thus, it follows the principle that the result of this parameter change is then re-examined after completion of the subsequent deformation process.

  The object of the present invention is therefore an automatable manufacturing method and, for this purpose, which enables the position adjustment of at least one deformation tool on the basis of measurement data obtained during the deformation process during cold pilger rolling. It is to provide a suitable device.

  In order to solve the above problems, according to the present invention, a rolling mandrel supported by at least one mandrel receiver, at least two deformation processing tools acting on a pipe from the outside, preferably at least one outer roll, and a deformation processing step In a device for manufacturing a cold Pilger rolled tube using a rolling mechanism comprising a measuring device for measuring the outer diameter of the tube, at least one position is provided on the deformation tool that acts on the tube from the outside. The adjusting device is operatively coupled and the position adjusting device is connected to the measuring device.

  Preferred embodiments of the present invention are the inventions according to the dependent claims.

  In a preferred embodiment, the position adjusting device is connected to the measuring device via a control unit.

  In a preferred embodiment, the control unit is connected to a data storage device for regulation parameters and / or operating parameters.

  In a preferred embodiment, the wall thickness deviation from a predetermined value or tolerance range can be confirmed during the deformation process.

  In a preferred embodiment, the measuring device is a laser measuring device.

  In a preferred embodiment, the deformation tool acting on the tube from the outside is supported on at least one position adjustment device capable of adjusting and preferably fixing the rolling gap between the deformation tool and the tube.

  In a preferred embodiment, the position adjustment device comprises an electrically adjustable adjustment wedge.

  In a preferred embodiment, the position adjustment device comprises a hydraulically adjustable adjustment wedge, preferably a pump for hydraulic fluid is located at the rolling stand.

  In a preferred embodiment, the position adjusting device comprises a hydraulic cylinder for adjusting and fixing the rolling gap.

  In a preferred embodiment, the position adjustment device is operatively connected to the deformation tool acting on the tube from at least one outside, preferably at least one outer roll, via at least one adjustable support roll.

  In a preferred embodiment, transmission of measurement data and possibly control data can be carried out by cable or telemetry.

  In a preferred embodiment, additionally, the rolling mandrel is adjustably arranged in the rolling mechanism.

  In a preferred embodiment, the rolling mandrel is also connected to a measuring device and possibly a control device.

  Further, in order to solve the above-mentioned problems, according to the present invention, a rolling mandrel supported by at least one mandrel receiver, at least two deformation processing tools acting on the pipe from the outside, preferably at least one outer roll, and deformation processing In a method of manufacturing a cold Pilger rolled tube using a rolling mechanism comprising a measuring device for measuring the wall thickness of the tube during the process, a deformation tool acting on the tube from the outside, preferably at least one outer roll At least one position adjustment device for the device is connected to the measurement device, and when the measurement device confirms the deviation of the wall thickness from a predetermined value or tolerance range, the position of the deformation tool is adjusted. .

  Preferred embodiments of the present invention are the inventions according to the dependent claims.

  In a preferred embodiment, a control device is connected to the measuring device and the position adjusting device.

  In a preferred embodiment, the position adjustment of the deformation tool acting on the tube from the outside is carried out during the deformation process.

  In a preferred embodiment, laser measurement of tube diameter is performed.

  In a preferred embodiment, the outer diameter is measured over the entire circumference of the tube.

  In a preferred embodiment, at least one measurement, preferably at least 5 measurements, are performed for each feed and / or for each partial rotation around the longitudinal axis of the tube in the rolling mechanism.

  In a preferred embodiment, the rolling mandrel is additionally adjusted in order to eliminate wall thickness deviations from a predetermined value or tolerance range.

  According to the invention, at least one position adjustment device is operatively coupled to at least one deformation tool that acts on the tube from the outside, the position adjustment device being connected to the measuring device on the other hand. The connection is preferably made by the intervention of a control unit between the position adjusting device and the measuring device. This control unit is particularly preferably connected to a data storage device for adjustment parameters and / or operating parameters.

  Thereby, according to the invention, it is possible to detect deformation results and in some cases errors which occur preferably without substantial delay, and preferably to take appropriate corrective measures while the deformation process is still in progress. An on-line capable device for manufacturing a cold pilger rolled tube is provided.

  In doing so, not only can the ongoing deformation process be permanently monitored, but rather the tracking and monitoring and evaluation of possible modifications and adjustments that may be taken can be performed almost immediately, This also introduces the possibility of introducing and implementing necessary post-modifications in some cases.

  The position adjusting device is connected for this purpose to at least one deforming tool acting on the tube from the outside, preferably at least one outer roll, so that the adjustment of the rolling gap is preferably measured in the desired manner. It is possible to implement and tune the device online.

  In a preferred embodiment of the present invention, the deviation of the pipe outer diameter from a predetermined value or tolerance range is confirmed during the deformation process. The deviation is particularly preferably verified by checking the measurement data against the set value and the comparison data stored in the control unit, in particular in the storage unit of the control unit. This provides an apparatus that is automated and monitors the required tolerances over the entire circumferential process, preferably also ensuring the introduction of appropriate measures.

  Preferably, the measuring device is an optical measuring system, for example a laser measuring device. The optical measurement system allows non-destructive reliable online measurement of the outer diameter of a cold Pilger rolled tube, using a particularly easily controllable means and achieving particularly accurate measurement results, Is possible.

  Usually, the outer diameter is not measured only at the fixed position of the tube. Rather, the cold pilger rolling process regularly rotates the tube around its longitudinal axis. This makes it possible to carry out a scanning of the measurement over the entire circumference of the deformed tube exclusively by the preferably fixed arrangement of the measuring device and the relative movement of the tube relative to the measuring device carried out through the measuring device. is there. Moreover, it is advantageous if not only a single measurement is performed at a predetermined location on the tube, but also a large number of measurements are performed throughout the deformation process, for example, maintaining a predetermined frequency. Thereby, by obtaining the detected measurement data, the influence of a measurement error that may occur in some cases can be minimized by simple means.

  In an advantageous embodiment of the invention, the deformation tool acting on the tube from the outside is supported on at least one adjusting device which can adjust the rolling gap and preferably also can be fixed in this position. This ensures the post-adjustability of the device and the post-adjustment of the rolling gap, preferably automatically and reliably during the deformation process.

  In a first optional aspect of the invention, the adjustment device may have an adjustment wedge that is electrically adjustable. Through the adjusting wedge, the rolling gap can be adjusted to any suitable shape and thickness, preferably in a stepless manner, using means that are well controllable and ready.

  In a second optional, still preferred aspect of the present invention, the adjustment device comprises a hydraulically adjustable adjustment wedge, and preferably a pump for the fluid is rolled to provide hydraulic fluid. Located on the stand itself. This again provides a stepless adjustment of the rolling gap using simple and easily controllable means. In addition to this, the preferred arrangement of the pump on the rolling stand itself promotes the compactness of the structural form and reduces the length of the hydraulic fluid line to the minimum required dimensions.

  In a third optional and still preferred aspect of the invention, the adjustment and fixing of the rolling gap is performed by one or more hydraulic cylinders. Even with this preferred embodiment of the invention, a stepless adjustment of the rolling gap using simple and easily controllable means can be guaranteed.

  In a fourth optional and still preferred embodiment of the invention, the adjustment of the rolling gap is carried out, however, via the adjustment of at least one support roll for the deformation tool acting on the tube from the outside. Thereby, the deforming tool acting from the outside, preferably the at least one outer roll itself, has to be adjusted, so that the situation of being connected to the adjusting device is avoided. Rather, the adjusting device can be connected to a support roll, so that indirectly the adjustment of the rolling gap can be ensured using simple and reliably controllable means.

  Moreover, in this connection, it is advantageous if the transmission of measurement data and possibly control data to the adjusting device or devices is carried out via cables. In an alternative, still advantageous manner, the transmission may be by telemetry. This minimizes the amount of cable and the configuration space required for the cable. In the case of telemetry transmission of measurement data and possibly control data, cable capsules and means for protecting the cable from the influence of the deformation process itself are no longer necessary.

  According to the invention, it is advantageous not only that the deformation tool acting on the tube from the outside is adjustable, but additionally that the rolling mandrel is arranged in the rolling mechanism in an adjustable manner. For this purpose, the rolling mandrel is preferably also connected to a measuring device and possibly a control device. This ensures that all the tools involved in the deformation process can be appropriately adjusted with respect to their position, so that the best deformation results can be achieved. The flexibility of the device, which makes it possible to react to deviations in the tube wall thickness and / or outer diameter from a predetermined amount, is advantageously increased by this advantageous aspect of the invention.

  According to a second aspect of the invention, a rolling mandrel supported on at least one mandrel receiver, at least two deforming tools acting on the tube from the outside, preferably an outer roll, and the wall of the tube during the deforming process A method of manufacturing a cold pilger rolled tube using a rolling mechanism comprising a measuring device for measuring thickness is provided. In the present invention, at least one position adjusting device for the deformation tool that acts on the tube from the outside is a measuring device connected to the position adjusting device, the outer diameter of the deformed tube from a predetermined value or tolerance range. When the deviation is confirmed, the position is always adjusted.

  Preferably, the position adjusting device is connected not only to the measuring device but also to the control device in order to carry out the method according to the invention.

  The advantages achievable by the method according to the present invention and the functions and effects that can be achieved correspond to those already mentioned in connection with the first aspect of the present invention.

  The method according to the invention enables preferably fully automatic detection of the outer diameter of the deformed tube, and in some cases corrects the determined deviation by a suitable post-adjustment of the rolling gap between the outer rolls.

  In this connection, it is advantageous to measure the outer diameter over the entire circumference and length of the tube. For this purpose, at least one measuring device, preferably just one fixed measuring device, is provided in the device. During the deformation process, the fact that a partial rotation around the longitudinal axis of the tube is carried out in the rolling mechanism at every feed during the deformation process allows a fixed measuring device to scan the entire circumference of the deformed tube To do. This in addition is performed by a particularly simple means and nevertheless yields a reliable measurement of the overall outer diameter of the tube.

  Finally, when carrying out the method according to the invention, it is advantageous to adjust not only the outer roll but also the adjustable mandrel arranged in order to eliminate wall thickness deviations from predetermined values and tolerance ranges. . This makes it possible to increase the flexibility of the device and method according to the invention in a particularly advantageous way so that any form and every place of deviation can be dealt with using the most effective means.

  According to the present invention, it is possible to adjust the position of at least one deformation tool based on measurement data obtained during the deformation process during cold pilger rolling. Hereinafter, the present invention will be described in detail with reference to 14 drawings.

It is the schematic of the rolling stand in the 1st Embodiment of this invention. 1 is a schematic view of a part of an apparatus according to a first embodiment of the present invention. It is the schematic of the rolling stand in the 2nd Embodiment of this invention. It is the schematic of the rolling stand in the 3rd Embodiment of this invention. It is the schematic of a part of apparatus which concerns on the 3rd Embodiment of this invention. It is the schematic of the rolling stand in the 4th Embodiment of this invention. It is the schematic of the rolling stand in the 5th Embodiment of this invention. It is the schematic of the rolling stand in the 6th Embodiment of this invention. It is a schematic side view of the rolling stand in the 7th Embodiment of this invention. It is a schematic side view of the rolling stand in the 8th Embodiment of this invention. It is a schematic side view of the rolling stand in the 9th Embodiment of this invention. It is a schematic side view of the rolling stand in the 10th Embodiment of this invention. It is a schematic side view of the rolling stand in the eleventh embodiment of the present invention. It is a schematic side view of the rolling stand in the 12th Embodiment of this invention.

  FIG. 1 is a schematic view of a rolling stand or a roll stand 4 as a deformation tool for cold pilger rolling a tube in the first embodiment of the present invention. In the rolling stand 4, the upper outer roll 4 a and the lower outer roll 4 b guide the rolling mandrel (not shown) between them (not shown) and stretch the tube to a predetermined cross-sectional area and wall thickness. It arrange | positions so that the rolling gap | interval or roll gap | interval S for reducing may be formed. The upper outer roll 4a is adjusted to be movable up and down via a clamp wedge or a wedge-shaped tightening body 7a, so that the dimension of the rolling gap S can be adjusted appropriately. The adjustment of the clamp wedge 7a, on the other hand, is carried out via the rotational movement of the spindle 14 operatively coupled to the clamp wedge 7a. The spindle 14 extends through the entire stand frame 4 and the clamp wedge 7a. The rotation of the spindle 14 causes the clamp wedge 7a to move left and right, causing the slope of the clamp wedge 7a relative to the complementary slope of the clamp wedge or wedge-shaped clamping body 7b directly coupled to the assembly member for the outer roll 4a. Slide.

  FIG. 2 shows the rolling stand 4 in the embodiment shown in FIG. 1 together with a pipe 8 penetrating between the upper work roll 4a and the lower work roll 4b. The rolling mandrels that are also used in the cold pilger rolling process used are not shown in order to simplify the drawing. The pipe 8 passes from the left to the right in the drawing through the rolling gap S between the upper roll 4a and the lower roll 4b, and enters the measuring device 5 after performing deformation processing. In the measuring device 5, the outer diameter of the tube 8 is measured. The measurement data output from the measuring device 5 is input to the control device 6. In some cases, the control device 6 issues a control command for adjusting the rolling gap S via the movement of the upper work roll 4a in the direction of arrow 15 after access to the appropriate operating data.

  FIG. 3 is a schematic side view of the rolling stand 4 in the second embodiment of the present invention. The adjustment wedge 7a for the upper roll 4a is movable by electric or hydraulic motors 16,17. As a result, it is possible to adjust the rolling gap S in a desired manner.

  FIG. 4 is a schematic side view of the rolling stand 4 according to the third embodiment of the present invention. In the third embodiment, unlike the first and second embodiments shown in FIGS. 1 to 3, the lateral movement of the adjustment wedge 7 a is performed via the hydraulic cylinders 18 and 19. Again, the lateral movement of the clamp wedge 7a in the horizontal direction causes a vertical movement of the upper work roll 4a and thus adjusts the rolling gap S in the desired manner.

  FIG. 5 shows a variation of the embodiment of the rolling stand 4 shown in FIG. On the other hand, the pump 20 driven by the pump motor 21 controls the oil flow to the hydraulic cylinders 18 and 19. Preferably, the pump 20 and the motor 21 are solidified to the rolling stand 4, thereby limiting the configuration space of the rolling stand 4 including all the auxiliary machines to the minimum necessary.

  FIG. 6 is a schematic side view of the rolling stand 4 in the fourth embodiment of the present invention. The hydraulic cylinder 22 supports the upper work roll 4a directly and without using a clamp wedge or the like, and functions as a mechanism for adjusting the rolling gap S in a desired form. The height adjustment of the piston in the hydraulic cylinder 22 is performed by supplying hydraulic fluid under pressure P from an external source.

  FIG. 7 is a schematic side view of the rolling stand 4 in the fifth embodiment of the present invention. In the fifth embodiment, the adjustment of the rolling gap S through the height adjustment of the upper work roll 4a is performed through the spindle 23 that serves as a mechanism for supporting the upper work roll 4a. The spindle 23, on the other hand, is driven by a motor 24, which not only provides stepless adjustment of the rolling gap S via the height of the work roll 4a, but also fixes the upper work roll 4a at the desired position. .

  FIG. 8 is a schematic side view of the rolling stand 4 according to the sixth embodiment of the present invention, and relates to energy supply to the actuator itself. Thus, it is obvious that the sixth embodiment may be appropriately combined with the embodiment described in FIGS. The energy supply to the rolling stand 4 is performed via an external source 25 to a connection portion 26 that is consolidated to the rolling stand 4. From this connection 26, energy is provided to an actuator (not shown) for the upper outer roll 4a.

  FIG. 9 is a schematic side view of the rolling stand 4 according to the seventh embodiment of the present invention. Similarly to FIG. 8, the upper side of the rolling stand 4 and for the upper roll 4a (not shown). ) According to the aspect of the electrical energy supply to the actuator. Accordingly, the seventh embodiment of the present invention can be appropriately combined with the embodiment shown in FIGS. The electric energy supply is performed inductively in the form shown in FIG. The electrical conductor 27 and the current collector 28 coupled to the rolling stand 4 are operatively coupled to each other so that a voltage is induced in the current collector 28 without contacting the conductor 27. This voltage is sufficient to feed the actuator (not shown) for the upper outer roll 4a to adjust the rolling gap appropriately.

  FIG. 10 is a schematic side view of the rolling stand 4 in the eighth embodiment of the present invention. The eighth embodiment also relates to energy supply to the rolling stand 4, in particular to an actuator (not shown) for the upper outer roll 4 a of the rolling stand 4. Accordingly, the eighth embodiment can be appropriately combined with the embodiment shown in FIGS. In the eighth embodiment, energy is supplied to the rolling stand 4 through a dip tube (Tauchrohr) 29 in a hydraulic manner. The immersion pipe 29 is supplied with hydraulic fluid under pressure P from the outside. The dip tube 29 has two holes on its upper surface. Through these holes, hydraulic fluid can flow into a fluid reservoir 30 slidably supported along the dip tube 29. The fluid reservoir 30 is solidified to the rolling stand 4 and has an opening 30a on the lower surface. Through the opening 30a, hydraulic fluid under pressure P can be supplied to an actuator (not shown) for the upper outer roll 4a.

  FIG. 11 is a schematic side view of the rolling stand 4 according to the ninth embodiment of the present invention. The ninth embodiment also relates to energy supply to the rolling stand 4, particularly to the actuator (not shown) of the outer roll 4 a on the upper side of the rolling stand 4. Thus, the ninth embodiment can be combined with the embodiment shown in FIGS. 1 to 7 of the present invention as needed. The energy supply is carried out electrically and / or hydraulically in the form schematically shown in FIG. An energy source 31 and / or a pressure accumulator 32 are fixed to the rolling stand 4 for electric energy supply and hydraulic energy supply.

  FIG. 12 is a schematic side view of the rolling stand 4 according to the tenth embodiment of the present invention. In the tenth embodiment, control data and measurement from a measurement device (not shown) and / or a control device (not shown) to an actuator (not shown) of the rolling stand 4, particularly to an actuator of the upper outer roll 4a. Related to data transmission. Thus, it is obvious that the tenth embodiment can be appropriately combined with the embodiment of the present invention shown in FIGS. Transmission of control data and measurement data described here is performed by cable or telemetry (telemetry). In an advantageous tenth embodiment of the present invention, data is received from a measuring device (not shown) and / or a control device (not shown) via a transmitter 33 to a receiver 34 coupled to the rolling stand 4. Is transmitted in a non-contact manner by telemetry.

  FIG. 13 is a schematic side view of the rolling stand 4 in the eleventh embodiment of the present invention. Unlike the embodiment shown so far, the rolling stand 4 has a pair of outer rolls 4a and 4b that are movably arranged. The outer rolls 4a and 4b are supported in the rolling stand 4 by support rolls 35a and 35b, respectively. On the other hand, these support rolls 35a and 35b run on support beams 36a and 36b arranged in the rolling stand 4 so that the height and / or inclination thereof can be adjusted. It is possible to adjust the rolling gap S between the upper outer roll 4a and the lower outer roll 4b by adjusting the appropriate height and / or inclination of the support beams 36a and 36b. In particular, in the case of the rolling stand 4 that is arranged laterally along the longitudinal direction of the support beams 36a, 36b, this ensures that the support beams 36a, 36b are aligned along with the appropriate orientation of the support beams 36a, 36b. The rolling of the support rolls 35a and 35b and the constant adjustment of the rolling gap S or the variable adjustment depending on the location can be adjusted depending on the arrangement of the rolling stand 4 along the support beams 36a and 36b. It will be apparent to those skilled in the art that the eleventh embodiment shown in FIG. 13 may be appropriately combined with the features shown in FIGS.

  FIG. 14 is a schematic side view of the rolling stand 4 in the twelfth embodiment of the present invention. In this solution, a gear or gear pair 37 interlocked with the rolling stand 4 slides on a stationary shaft 38. Thereby, the change of the rolling gap S can be transmitted from the stationary motor 39 to the adjusting wedge 7a. The adjustment wedge 7 a is operatively coupled to the gear pair 37 via the spindle 40.

  4 Rolling stand, 4a, 4b Outer roll, 5 Measuring device, 6 Control device, 7a, 7b Clamp wedge, 8 Tube, 14 Spindle, 15 Arrow indicating movement direction of outer roll 4a, 16, 17 Motor, 18, 19 Hydraulic cylinder , 20 pump, 21 pump motor, 22 hydraulic cylinder, 23 spindle, 24 motor, 25 external source, 26 connection, 27 conductor, 28 current collector, 29 immersion tube, 30 fluid reservoir, 30a opening, 31 energy source, 32 Pressure accumulator, 33 transmitter, 34 receiver, 35a, 35b support roll, 36a, 36b support beam, 37 gear pairs, 38 shafts, 39 motor

Claims (20)

A rolling mandrel (2) supported on at least one mandrel receiver, at least two deforming tools (4) acting on the tube (8) from the outside, preferably at least one outer roll (4a, 4b), and deforming In the process, an apparatus (1) for producing a cold Pilger rolled tube using a rolling mechanism comprising a measuring device (5) for measuring the outer diameter of the tube (8),
At least one position adjusting device (7) is operatively coupled to the deformation tool (4) acting on the tube (8) from at least one outside, the position adjusting device (7) being connected to the measuring device (5). The apparatus for manufacturing a cold pilger rolling tube,   The device according to claim 1, wherein the position adjusting device (7) is connected to the measuring device (5) via a control unit (6).   3. The device according to claim 2, wherein the control unit (6) is connected to a data storage device for adjustment parameters and / or operating parameters.   4. The apparatus according to claim 1, wherein a wall thickness deviation from a predetermined value or tolerance range can be confirmed during the deformation process. 5.   The device according to claim 1, wherein the measuring device is a laser measuring device.   The deformation tool (4) acting on the tube (8) from the outside is at least capable of adjusting and preferably fixing the rolling gap (S) between the deformation tool (4) and the tube (8). 6. The device as claimed in claim 1, wherein the device is supported on one position adjusting device (7).   7. The device according to claim 6, wherein the position adjustment device (7) comprises an electrically adjustable adjustment wedge (7a, 7b).   The position adjustment device (7) comprises a hydraulically adjustable adjustment wedge (7a, 7b), preferably a pump (20) for hydraulic fluid is arranged at the rolling stand. 6. The apparatus according to 6.   The apparatus according to claim 6, wherein the position adjusting device (7) comprises a hydraulic cylinder (22) for adjusting and fixing the rolling gap (S).   Said position adjustment device (7) is a deformation tool (4) acting on said tube (8) from said at least one outside via at least one adjustable support roll (35a, 35b), preferably at least 7. The device according to claim 6, wherein the device is operatively coupled to one outer roll (4a, 4b).   Device according to any one of the preceding claims, wherein transmission of measurement data and possibly control data can be carried out by cable or telemetry.   The apparatus according to any one of the preceding claims, wherein the rolling mandrel (2) is additionally arranged in the rolling mechanism in an adjustable manner.   13. Apparatus according to claim 12, wherein the rolling mandrel (2) is also connected to the measuring device (5) and possibly to the control device (6). A rolling mandrel (2) supported on at least one mandrel receiver, at least two deforming tools (4) acting on the tube (8) from the outside, preferably at least one outer roll (4a, 4b), and deforming A method of manufacturing a cold Pilger rolled tube using a rolling mechanism comprising a measuring device (5) for measuring the wall thickness of the tube (8) during the process,
A deformation tool (4) acting on the tube (8) from the outside, preferably at least one position adjusting device (7) for the at least one outer roll (4a, 4b) is connected to the measuring device (5) The cold pilger is characterized in that when the measuring device (5) confirms the deviation of the wall thickness from a predetermined value or tolerance range, the position of the deformation tool (4) is adjusted. A method of manufacturing a rolled tube.   15. The method according to claim 14, wherein a control device (6) is connected to the measuring device (5) and the position adjusting device (7).   16. Method according to claim 14 or 15, wherein the position adjustment of the deformation tool (4) acting on the tube (8) from the outside is carried out during the deformation process.   17. A method according to any one of claims 14 to 16, wherein a laser measurement of the tube diameter is performed.   18. A method according to any one of claims 14 to 17, wherein the outer diameter is measured over the entire circumference of the tube (8).   19. At least one measurement, preferably at least 5 measurements, are performed for each feed and / or for each partial rotation around the longitudinal axis of the tube (8) in the rolling mechanism. the method of.   20. The method according to any one of claims 14 to 19, further comprising adjusting the rolling mandrel (2) in order to eliminate wall thickness deviations from a predetermined value or tolerance range.

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