EP3021992B1 - Device for machining a workpiece - Google Patents

Device for machining a workpiece Download PDF

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Publication number
EP3021992B1
EP3021992B1 EP14750306.4A EP14750306A EP3021992B1 EP 3021992 B1 EP3021992 B1 EP 3021992B1 EP 14750306 A EP14750306 A EP 14750306A EP 3021992 B1 EP3021992 B1 EP 3021992B1
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EP
European Patent Office
Prior art keywords
rolling
workpiece
region
tool
area
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EP14750306.4A
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German (de)
French (fr)
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EP3021992A1 (en
Inventor
Arne Höltich
Helmut Sproll
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Rollwalztechnik Abele and Holtich GmbH
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Rollwalztechnik Abele and Holtich GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B21H3/042—Thread-rolling heads
    • B21H3/044—Thread-rolling heads working axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/205—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with annular guides

Definitions

  • the invention relates to a tool for machining a workpiece according to the preamble of claim 1.
  • the WO 2011/022747 A1 shows a device for cutting machining elongate workpieces for producing a thread-like outer profile by means of rotatable forming rolls.
  • the forming rollers rotate around the workpiece and pass during a complete rotation around the workpiece successively with this in a forming engagement.
  • the workpiece itself is non-rotatable about its axis during machining by means of the rolling head and movably mounted in the direction of its axis, for example by a hydraulic slide.
  • Object of the present invention is to accomplish the manufacture of such sensitive workpieces in a continuous process, in particular on 2-reel machines.
  • a thread is to be formed in a pipe, then it makes sense to provide two successive dies with different diameters.
  • the second rolling die following the first rolling die has one larger diameter in the profiling to be transmitted than the inlet roll jaw.
  • a thread with a smaller depth is produced, followed by a depression of a thread having a greater depth, but of course in the same thread.
  • this method is not only to be used in the manufacture of threads, but also in the transmission of other possible profiles.
  • the dies with different profiling do not follow each other immediately, but if there is arranged between a relaxation area in which the workpiece is not pressurized. In this area, the workpiece can relax and reorient itself back to the cylindrical shape before it is again exposed to another pressure of the subsequent rolling die. As a rule, after the first deformation, the workpiece has a higher resistance moment and should therefore regress to the cylinder shape before further deformation.
  • the rolling dies have an inlet area.
  • inlet area serves to gently pre-deform the workpiece and facilitates the pick-up by the roller. In the outlet area, the workpiece is released again.
  • An inventive tool 1 for processing a workpiece not shown in detail has two dies 2 and 3. Both rolling jaws 2 and 3 are connected to each other via a relaxation area 4. This preferably consists of a cylinder portion and has a diameter d1.
  • the rolling jaws 2 and 3 are formed as inlet rolling jaws and have an inlet region 5 and 10. These are designed conically and extend obliquely to a rotational axis A of the tool first
  • the rolling-in region 5 is followed by a rolling region 6, with a toothing 8 as a profile shape on a circumferential surface 7.
  • a short outlet region 9 adjoins the rolling region 6, which can also be referred to as a chamfer.
  • the peripheral surface 7 of the rolling region 6 measured from the top of the toothing 8 from a diameter d2.
  • the rolling jaw 3 is arranged on the relaxation area 4. It likewise begins with the expansion area 4 having an inlet area 10 which is of conical design, as well as an outlet area 11. Between the inlet area 10 and the outlet area 11, a rolling area 12 with a toothing 14 is provided as a profile on a peripheral surface 13. This rolling jaw 3 has measured from the top of the toothing 14 from a diameter d3, which is formed larger than the diameter d2.
  • the rolling rolling machines described in the prior art in which usually two corresponding tools are provided, which are to be adjusted to the workpiece to be machined.
  • the tube is inserted parallel to the axis of rotation of the tools between them. This is done first along the inlet region 5, in which the workpiece is preformed until the workpiece reaches the actual rolling region 6 of the rolling die 2.
  • the profile shape 8 of the rolling jaw 2 is pressed to the desired first depth of calibration in the workpiece or its peripheral surface, so that there arises the corresponding pre-profile. If the workpiece is produced in a continuous process, the workpiece is automatically transported further during roll rolling along the axis of rotation A. In this case, the workpiece is released in the outlet region 9 of the rolling jaw 2 and can relax in the relaxation area 4.
  • the workpiece hits the inlet area 10 of the rolling jaw 3 and further onto the rolling area 12 with the profile shape 14. Since this rolling jaw 3 has a larger diameter d3 than the diameter d2 of the rolling jaw 2, the teeth are pressed deeper into the latter Workpiece.

Description

Die Erfindung betrifft ein Werkzeug zum Bearbeiten eines Werkstücks nach dem Oberbegriff von Anspruch 1.The invention relates to a tool for machining a workpiece according to the preamble of claim 1.

Stand der TechnikState of the art

Vorrichtungen zum Bearbeiten von Werkstücken gibt es eine Vielzahl, beispielsweise als Pressen oder Stanzen. Eine Reihe von derartigen Vorrichtungen sind auch vorgesehen, um ein Werkstück von zumindest zwei Seiten her zu bearbeiten. Hier sollen vor allem Vorrichtungen erwähnt werden, welche in das Werkstück eine gewünschte Profilierung einformen. Hierzu zählen vor allem Gewindewalzmaschinen, wobei die vorliegende Erfindung jedoch nicht darauf beschränkt sein soll.There are a variety of devices for machining workpieces, such as pressing or punching. A number of such devices are also provided to machine a workpiece from at least two sides. Here, especially devices are to be mentioned, which form a desired profiling in the workpiece. These include above all thread rolling machines, but the present invention should not be limited thereto.

Bei bekannten Gewindewalzmaschinen nach der EP 0 310 898 B1 werden die beiden Druckwalzen auf das Werkstück zu bewegt. Derartige Gewindewalzmaschinen werden auch als Rollwalzmaschinen od. dgl. bezeichnet (siehe Deutsche Gesetzliche Unfallversicherung, Fachausschuss Maschinenbau, Fertigungssysteme, Stahlbau, Informationsblatt Nr. 007, www.bghm.de/fileadmin/user_upload/Arbeitsschuetzer/Praxishilfen/Fachbereich s-Informationsblaetter/007_MFS_E2010-01_Rollwalzmaschinen.pdf).In known thread rolling machines after the EP 0 310 898 B1 the two pressure rollers are moved towards the workpiece. Such thread rolling machines are also known as roller rolling machines or the like (see German statutory accident insurance, technical committee for mechanical engineering, production systems, steel construction, information sheet no. 007, www.bghm.de/fileadmin/user_upload/Arbeitsschuetzer/Praxishilfen/Fachbereich s-Informationsblaetter / 007_MFS_E2010- 01_Rollwalzmaschinen.pdf).

Probleme insbesondere bei 2-Rollen-Maschinen treten vor allem dann auf, wenn empfindliche Werkstücke bearbeitet werden sollen. Dazu zählen vor allem dünnwandige Rohre, die sich durch den seitlichen Druck der Werkzeuge leicht verformen können. Deshalb werden derartige Werkstücke heute nicht im kontinuierlichen Verfahren hergestellt, sondern in einem ersten Arbeitsgang wird eine Profilierung mit relativ geringer Tiefe erzeugt. Danach werden die Werkzeuge wieder auseinander gefahren und in einem zweiten Gang erfolgt eine Profilierung mit grösserer Tiefe. In der Regel folgt dann ein dritter gleicher Arbeitsgang oder sogar ein vierter. Eine andere Alternative stellen 3-Rollen-Maschinen dar, die über drei Umgangspunkte auf das Werkstück drücken.Problems especially with 2-roller machines occur especially when sensitive workpieces are to be processed. These include above all thin-walled tubes, which can easily deform due to the lateral pressure of the tools. Therefore, such workpieces are not produced today in a continuous process, but in a first operation, a profiling is produced with relatively little depth. Thereafter, the tools are moved apart again and in a second gear profiling with greater depth. As a rule, then follows a third same operation or even a fourth. Another alternative is 3-roller machines that press on the workpiece via three points of contact.

Die WO 2011/022747 A1 zeigt eine Vorrichtung zur spanlosen Bearbeitung langgestreckter Werkstücke zur Herstellung eines gewindeartigen Aussenprofils mittels drehbaren Formwalzen. Dabei umlaufen die Formwalzen das Werkstück und gelangen während eines vollständigen Umlaufs um das Werkstück nacheinander mit diesem in einen Umformeingriff. Das Werkstück selbst ist während der Bearbeitung mittels des Walzkopfes um seine Achse unverdrehbar und in Richtung seiner Achse, beispielsweise durch einen hydraulischen Schlitten, beweglich gelagert. The WO 2011/022747 A1 shows a device for cutting machining elongate workpieces for producing a thread-like outer profile by means of rotatable forming rolls. In this case, the forming rollers rotate around the workpiece and pass during a complete rotation around the workpiece successively with this in a forming engagement. The workpiece itself is non-rotatable about its axis during machining by means of the rolling head and movably mounted in the direction of its axis, for example by a hydraulic slide.

Zum Herstellen eines integral gewalzten Rippenrohres wird gemäss DE 101 56 374 C1 , US 5 669 441 A und insbesondere EP 1 830 151 A1 eine Vorrichtung verwendet, in die jeweils mindestens drei voneinander beabstandete Walzwerkzeuge mit Walzscheiben integriert sind. Diese werden auf einer Stange oder einem Rohr aufeinandergereiht und bilden ein Paket, das als "Rillendurchlaufrolle" bezeichnet werden kann.For producing an integrally rolled finned tube according to DE 101 56 374 C1 . US 5,669,441 and particularly EP 1 830 151 A1 used a device in each of which at least three spaced apart Rolling tools are integrated with rolling disks. These are strung together on a pole or tube to form a package that can be referred to as a "creasing roll".

Aufgabetask

Aufgabe der vorliegenden Erfindung ist es, das Herstellen von derartigen empfindlichen Werkstücken auch in einem kontinuierlichen Verfahren insbesondere auf 2-Rollen-Maschinen zu bewerkstelligen.Object of the present invention is to accomplish the manufacture of such sensitive workpieces in a continuous process, in particular on 2-reel machines.

Lösung der AufgabeSolution of the task

Zur Lösung der Aufgabe führt ein Werkzeug nach den Merkmalen des kennzeichnenden Teils von Anspruch 1.To achieve the object, a tool according to the features of the characterizing part of claim 1.

Dies bedeutet, dass die Werkstücke, die aufeinanderfolgenden Werkzeuge durchlaufen, diese Werkzeuge aber nicht extra auseinander und wieder zusammengefahren werden müssen. Hierdurch wird der Arbeitsgang insgesamt wesentlich beschleunigt und dadurch natürlich auch das Herstellen von empfindlichen Werkstücken verbilligt. Die Präzision oder Qualität der eigentlichen Übertragung der Profilierung leidet in keinem Fall.This means that the workpieces passing through successive tools do not need to be extra apart and collapsed again. As a result, the operation is significantly accelerated overall, and of course, the manufacture of sensitive workpieces cheaper. The precision or quality of the actual transmission of the profiling does not suffer in any case.

Soll z.B. ein Gewinde in ein Rohr eingeformt werden, so bietet es sich an, zwei aufeinanderfolgende Walzbacken mit unterschiedlichen Durchmessern zu versehen. Die auf die erste Walzbacke folgende zweite Walzbacke hat einen grösseren Durchmesser in der zu übertragenden Profilierung als die Einlaufwalzbacke. Im kontinuierlichen Verfahren wird so beim Durchlaufen des Werkstücks durch beide Walzbacken zuerst ein Gewinde mit einer geringeren Tiefe erzeugt, danach folgt ein Eindrücken eines Gewindes mit einer höheren Tiefe, allerdings natürlich in denselben Gewindegang. Dieses Verfahren ist natürlich nicht nur bei der Herstellung von Gewinden zu verwenden, sondern auch bei der Übertragung weiterer möglicher Profilierungen.If, for example, a thread is to be formed in a pipe, then it makes sense to provide two successive dies with different diameters. The second rolling die following the first rolling die has one larger diameter in the profiling to be transmitted than the inlet roll jaw. In the continuous process, as the workpiece passes through both dies, first a thread with a smaller depth is produced, followed by a depression of a thread having a greater depth, but of course in the same thread. Of course, this method is not only to be used in the manufacture of threads, but also in the transmission of other possible profiles.

Von grossem Vorteil hat sich herausgestellt, dass die Walzbacken mit unterschiedlicher Profilierung nicht sofort aufeinander folgen, sondern wenn dazwischen ein Entspannungsbereich angeordnet ist, in dem das Werkstück nicht mit Druck beaufschlagt wird. In diesem Bereich kann sich das Werkstück entspannen und sich wieder auf die Zylinderform zurückorientieren, bevor es wiederum einem weiteren Druck der nachfolgenden Walzbacke ausgesetzt wird. In der Regel hat das Werkstück nach der ersten Verformung ein höheres Widerstandsmoment und sollte sich deshalb vor der weiteren Verformung auf die Zylinderform zurückbilden.Of great advantage has been found that the dies with different profiling do not follow each other immediately, but if there is arranged between a relaxation area in which the workpiece is not pressurized. In this area, the workpiece can relax and reorient itself back to the cylindrical shape before it is again exposed to another pressure of the subsequent rolling die. As a rule, after the first deformation, the workpiece has a higher resistance moment and should therefore regress to the cylinder shape before further deformation.

Die Walzbacken besitzen einen Einlaufbereich. Im Rahmen der Erfindung liegt natürlich, dass auch nur eine Walzbacke mit einem Einlaufbereich versehen ist. Ähnliches gilt auch für einen vorgesehenen Auslaufbereich der Walzbacke. Der Einlaufbereich dient zum sanften Vorverformen des Werkstücks und erleichtert die Aufnahme durch die Walzenrolle. Im Auslaufbereich wird das Werkstück wieder freigegeben.The rolling dies have an inlet area. In the context of the invention, of course, that only one rolling jaw is provided with an inlet region. The same applies to a designated outlet region of the rolling die. The inlet area serves to gently pre-deform the workpiece and facilitates the pick-up by the roller. In the outlet area, the workpiece is released again.

Figurenbeschreibungfigure description

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in ihrer einzigen Figur eine schematisch und nur zu Hälfte dargestellte Draufsicht auf ein erfindungsgemässes Werkzeug zum Bearbeiten eines Werkstücks.Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in its single figure a schematic and only half shown plan view of an inventive tool for machining a workpiece.

Ein erfindungsgemässes Werkzeug 1 zum Bearbeiten eines nicht näher gezeigten Werkstückes weist zwei Walzbacken 2 und 3 auf. Beide Walzbacken 2 und 3 sind über einen Entspannungsbereich 4 miteinander verbunden. Dieser besteht bevorzugt aus einem Zylinderabschnitt und weist einen Durchmesser d1 auf.An inventive tool 1 for processing a workpiece not shown in detail has two dies 2 and 3. Both rolling jaws 2 and 3 are connected to each other via a relaxation area 4. This preferably consists of a cylinder portion and has a diameter d1.

Die Walzbacken 2 und 3 sind als Einlaufwalzbacken ausgebildet und besitzen einen Einlaufbereich 5 und 10. Diese sind konisch ausgestaltet und verlaufen schräg zu einer Drehachse A des Werkzeugs 1.The rolling jaws 2 and 3 are formed as inlet rolling jaws and have an inlet region 5 and 10. These are designed conically and extend obliquely to a rotational axis A of the tool first

Auf den Einlaufbereich 5 folgt ein Walzbereich 6, mit einer Zahnung 8 als Profilform auf einer Umfangfläche 7. An den Walzbereich 6 schliesst ein kurzer Auslaufbereich 9 an, der auch als Fase bezeichnet werden kann. Ingesamt weist die Umfangsfläche 7 des Walzbereichs 6 von der Spitze der Zahnung 8 ab gemessen einen Durchmesser d2 auf.The rolling-in region 5 is followed by a rolling region 6, with a toothing 8 as a profile shape on a circumferential surface 7. A short outlet region 9 adjoins the rolling region 6, which can also be referred to as a chamfer. Overall, the peripheral surface 7 of the rolling region 6 measured from the top of the toothing 8 from a diameter d2.

An den Entspannungsbereich 4 anschliessend ist die Walzbacke 3 angeordnet. Sie beginnt ebenfalls auf den Entspannungsbereich 4 folgend mit einem Einlaufbereich 10, der konisch ausgestaltet ist, ebenso, wie ein Auslaufbereich 11. Zwischen Einlaufbereich 10 und Auslaufbereich 11 ist ein Walzbereich 12 mit einer Zahnung 14 als Profilform an einer Umfangfläche 13 vorgesehen. Diese Walzbacke 3 besitzt von der Spitze der Zahnung 14 aus gemessen einen Durchmesser d3, der grösser ausgebildet ist als der Durchmesser d2.Subsequently, the rolling jaw 3 is arranged on the relaxation area 4. It likewise begins with the expansion area 4 having an inlet area 10 which is of conical design, as well as an outlet area 11. Between the inlet area 10 and the outlet area 11, a rolling area 12 with a toothing 14 is provided as a profile on a peripheral surface 13. This rolling jaw 3 has measured from the top of the toothing 14 from a diameter d3, which is formed larger than the diameter d2.

Die Funktionsweise der vorliegenden Erfindung ist folgende:

  • In ein Werkstück, nämlich in ein Rohr mit einer relativ geringen Wandstärke, soll eine Zahnung, beispielsweise ein Gewinde mit einer bestimmten Steigung oder aber auch nur eine Zahnung ohne Steigung, eingebracht werden.
The operation of the present invention is as follows:
  • In a workpiece, namely in a tube with a relatively small wall thickness, a toothing, for example, a thread with a certain slope or even a toothing without inclination to be introduced.

Hierzu dienen insbesondere die im Stand der Technik beschriebenen Rollwalzmaschinen, bei denen in der Regel zwei entsprechende Werkzeuge vorgesehen sind, die auf das zu bearbeitende Werkstück hin verstellt werden sollen. Hierbei ist vorgesehen, dass das Werkstück, im vorliegenden Fall das Rohr, parallel zur Drehachse der Werkzeuge zwischen diese eingeführt wird. Dies geschieht zuerst entlang dem Einlaufbereich 5, in dem das Werkstück vorgeformt wird, bis das Werkstück den eigentlichen Walzbereich 6 der Walzbacke 2 erreicht. Hier wird die Profilform 8 der Walzbacke 2 auf die gewünschte erste Kalibiertiefe in das Werkstück bzw. dessen Umfangfläche eingedrückt, so dass dort das entsprechende Vorprofil entsteht. Wird das Werkstück im Durchlaufverfahren produziert, so wird das Werkstück automatisch beim Rollwalzen entlang der Drehachse A weiter transportiert. In diesem Fall wird das Werkstück im Auslaufbereich 9 der Walzbacke 2 freigegeben und kann sich in dem Entspannungsbereich 4 entspannen.For this purpose, in particular, the rolling rolling machines described in the prior art, in which usually two corresponding tools are provided, which are to be adjusted to the workpiece to be machined. It is provided that the workpiece, in the present case, the tube is inserted parallel to the axis of rotation of the tools between them. This is done first along the inlet region 5, in which the workpiece is preformed until the workpiece reaches the actual rolling region 6 of the rolling die 2. Here, the profile shape 8 of the rolling jaw 2 is pressed to the desired first depth of calibration in the workpiece or its peripheral surface, so that there arises the corresponding pre-profile. If the workpiece is produced in a continuous process, the workpiece is automatically transported further during roll rolling along the axis of rotation A. In this case, the workpiece is released in the outlet region 9 of the rolling jaw 2 and can relax in the relaxation area 4.

Nach dem Entspannungsbereich 4 trifft das Werkstück auf den Einlaufbereich 10 der Walzbacke 3 und weiter auf den Walzbereich 12 mit der Profilform 14. Da diese Walzbacke 3 einen grösseren Durchmesser d3 aufweist, als der Durchmesser d2 der Walzbacke 2 erfolgt ein tieferes Eindrücken der Zahnung in das Werkstück.After the relaxation area 4, the workpiece hits the inlet area 10 of the rolling jaw 3 and further onto the rolling area 12 with the profile shape 14. Since this rolling jaw 3 has a larger diameter d3 than the diameter d2 of the rolling jaw 2, the teeth are pressed deeper into the latter Workpiece.

Es versteht sich von selbst, dass dieser Vorgang auch mit einer dritten oder vierten Walzbacke fortgesetzt werden kann, in der Regel hat sich aber in der Praxis gezeigt, dass zwei aufeinanderfolgende Walzbacken genügen. Bezugszeichenliste 1 Werkzeug 34 67 2 Walzbacke 35 68 3 Walzbacke 36 69 4 Entspannungsbereich 37 70 5 Einlaufbereich 38 71 6 Walzbereich 39 72 7 Umfangsfläche 40 73 8 Profilform 41 74 9 Auslaufbereich 42 75 10 Einlaufbereich 43 76 11 Auslaufbereich 44 77 12 Walzbereich 45 78 13 Umfangsfläche 46 79 14 Profilform 47 15 48 A Drehachse 16 49 17 50 d1 Durchmesser von 4 18 51 19 52 d2 Durchmesser von 6 20 53 21 54 d3 Durchmesser von 14 22 55 23 56 24 57 25 58 26 59 27 60 28 61 29 62 30 63 31 64 32 65 33 66 It goes without saying that this process can also be continued with a third or fourth rolling die, but it has generally been found in practice that two successive rolling dies suffice. <B> LIST OF REFERENCES </ b> 1 Tool 34 67 2 rolling die 35 68 3 rolling die 36 69 4 relaxation area 37 70 5 intake area 38 71 6 rolling zone 39 72 7 peripheral surface 40 73 8th profile form 41 74 9 discharge area 42 75 10 intake area 43 76 11 discharge area 44 77 12 rolling zone 45 78 13 peripheral surface 46 79 14 profile form 47 15 48 A axis of rotation 16 49 17 50 d1 Diameter of 4 18 51 19 52 d2 Diameter of 6 20 53 21 54 d3 Diameter of 14 22 55 23 56 24 57 25 58 26 59 27 60 28 61 29 62 30 63 31 64 32 65 33 66

Claims (3)

  1. Rotatable tool for machining a workpiece, in particular a tube with small wall thickness,
    characterised
    in that the tool (1) consists of at least two successive rolling dies (2, 3) and between two rolling dies (2, 3) is situated an expansion region (4) and the expansion region (4) has a smaller diameter (d1) than the adjacent rolling dies (2, 3), at least one rolling die (2, 3) having an inlet region (5, 10) and an outlet region (9, 11), and the inlet region (5, 10) and the outlet region (9, 11) extending conically inclined with respect to a centre axis (A) of the tool (1), a rolling region (6, 12) being situated between inlet region (5, 10) and outlet region (9, 11) and a peripheral surface (7, 13) of the rolling die (2, 3) being profiled.
  2. Tool according to Claim 1, characterised in that at least two successive rolling dies (2, 3) have a different diameter (d2, d3).
  3. Rolling machine having at least one tool according to Claim 1 or 2, the tool being movable towards the workpiece.
EP14750306.4A 2013-07-17 2014-07-16 Device for machining a workpiece Active EP3021992B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310107603 DE102013107603A1 (en) 2013-07-17 2013-07-17 Device for processing a workpiece
PCT/EP2014/001938 WO2015007386A1 (en) 2013-07-17 2014-07-16 Device for machining a workpiece

Publications (2)

Publication Number Publication Date
EP3021992A1 EP3021992A1 (en) 2016-05-25
EP3021992B1 true EP3021992B1 (en) 2017-07-12

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ID=51302689

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Application Number Title Priority Date Filing Date
EP14750306.4A Active EP3021992B1 (en) 2013-07-17 2014-07-16 Device for machining a workpiece

Country Status (4)

Country Link
EP (1) EP3021992B1 (en)
DE (1) DE102013107603A1 (en)
ES (1) ES2643516T3 (en)
WO (1) WO2015007386A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713454U1 (en) 1987-10-07 1988-02-04 Rollwalztechnik Abele + Hoeltich Gmbh, 7707 Engen, De
JPH02165875A (en) * 1988-12-16 1990-06-26 Furukawa Electric Co Ltd:The Heat exchanger tube and its manufacture
ES2171519T3 (en) * 1994-11-17 2002-09-16 Carrier Corp HEAT TRANSFER TUBE.
DE10156374C1 (en) * 2001-11-16 2003-02-27 Wieland Werke Ag Heat exchange tube structured on both sides has inner fins crossed by secondary grooves at specified rise angle
DE102006008083B4 (en) * 2006-02-22 2012-04-26 Wieland-Werke Ag Structured heat exchanger tube and method for its production
DE102009038813B4 (en) * 2009-08-31 2012-09-27 Dywidag-Systems International Gmbh Device for chipless machining of elongate workpieces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2643516T3 (en) 2017-11-23
WO2015007386A1 (en) 2015-01-22
DE102013107603A1 (en) 2015-01-22
EP3021992A1 (en) 2016-05-25

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