EP2716377B1 - Verfahren zur Herstellung eines konischen Rohrelements - Google Patents

Verfahren zur Herstellung eines konischen Rohrelements Download PDF

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Publication number
EP2716377B1
EP2716377B1 EP12187464.8A EP12187464A EP2716377B1 EP 2716377 B1 EP2716377 B1 EP 2716377B1 EP 12187464 A EP12187464 A EP 12187464A EP 2716377 B1 EP2716377 B1 EP 2716377B1
Authority
EP
European Patent Office
Prior art keywords
tube element
tube
mandrel
subjected
rolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP12187464.8A
Other languages
English (en)
French (fr)
Other versions
EP2716377A1 (de
Inventor
Stanislaw Rosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA
ZAKLAD PRODUKCJI SPRZETU OSWIETLENIOWEGO ROSA STANISLAW ROSA
Original Assignee
Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA
ZAKLAD PRODUKCJI SPRZETU OSWIETLENIOWEGO ROSA STANISLAW ROSA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=48047778&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2716377(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA, ZAKLAD PRODUKCJI SPRZETU OSWIETLENIOWEGO ROSA STANISLAW ROSA filed Critical Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA
Priority to EP12187464.8A priority Critical patent/EP2716377B1/de
Publication of EP2716377A1 publication Critical patent/EP2716377A1/de
Application granted granted Critical
Publication of EP2716377B1 publication Critical patent/EP2716377B1/de
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • 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
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling

Definitions

  • the object of the invention is a method of manufacturing a conical tube element, in particular from an aluminium cylindrical tube utilised as a straight-line or curved lighting column.
  • EP-A-1690610 which is considered as being the closest prior art, is a method of manufacturing a conical tube element by subjecting a straight-line tube element to plastic forming processes.
  • a Polish patent description PL194795 discloses a method of forming cylindrical and tapered tubes, in particular made from aluminium and alloys thereof.
  • a cylindrical tube is placed onto a mandrel and set in rotary motion, whereas the outside surface of the tube is subjected to cold regulated pressing by at least two non-driven forming rollers with an outside diameter 2-6 times larger than the smallest diameter of the formed cone, consisting of a cylindrical part and a tapered front part and preferably spaced in one plane and distributed uniformly around the perimeter of the tube, which are pressed in a regulated manner to the outside surface of the tube and simultaneously rolled along the axis of the tube, preferably at a speed in the range between 1 and 15 mm/tube rotation.
  • the pressing of the forming rolls is regulated.
  • the invention concerns a method of forming a conical tube element, in particular from an aluminium cylindrical tube, wherein the straight-line tube element undergoes plastic forming.
  • the straight-line tube element is put on a mandrel of a forming device, which mandrel is two metres long at the most, and then a section of said tube element put on said mandrel is rolled, and after that without interrupting the forming process, the remaining part of the tube element is rolled and drawn.
  • the formed tube element may have a conical shape along the entire length of said element or along a part thereof. In the latter case the remaining part of the tube element will be a cylindrical tube.
  • a straight-line tube element is placed onto two mandrels of the forming device on each side of the tube element, wherein said mandrels are two metres long at the most and then sections of the tube element placed on the mandrel are rolled, taperingly towards the centre of the tube element and after that, without interrupting the forming process, the remaining part of the tube element is rolled and drawn, and after that the formed conical element is cut in the area of a taper.
  • the method according to the invention allows for fast, uncomplicated and economical manufacturing of conical tube elements in one process.
  • a part of the column formed on a mandrel has the required high strength and the remaining part of the column which does not need to meet such strict strength criteria may be easily bent.
  • Conical tube elements formed using the method according to the invention may also be used as straight-line lighting columns.
  • two conical tube elements may be formed in one process, which significantly increases the effectiveness of the production process.
  • the method of forming a conical tube element in particular from an aluminium cylindrical tube consists in that an input straight-line cylindrical tube is placed onto a mandrel of a forming device.
  • the mandrel is two metres long at the most, for example, 1.8 m.
  • the mandrel is set in rotary motion, thus the tube is also set in rotary motion around the axis thereof.
  • a section of the tube element placed onto the mandrel is rolled by means of forming rollers, and after that, without interrupting the process, the remaining part of the tube element is subjected to rolling and drawing.
  • the so formed conical tube element following the removal thereof off the mandrel, may be subjected to bending to the predetermined curved shape at the part of said tube element which was previously rolled and drawn.
  • a straight-line, cylindrical input tube is mounted on two mandrels of a forming device, on each side of the tube element.
  • Said mandrels are two metres long at the most, for example 1.6 m.
  • the mandrels are set in synchronous rotary motion and thus the tube is also set in rotary motion around the axis thereof.
  • Sections of the tube element mounted on the mandrels are subjected to rolling, each with the use of a set of forming rollers, taperingly towards the centre of the tube element. Without interrupting the process, the remaining part of the tube element is subjected to rolling and drawing.
  • the formed conical element is cut in the area of tapering of the conical tube element.
  • the so formed conical tube element is removed from the mandrel and then the part of said tube element that was previously rolled and drawn may be subjected to bending to the predetermined curved shape.
  • the formed tube element may have conical form along full length thereof or only along a part thereof. In the latter case the remaining part of the tube element will have a form of a cylindrical tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Metal Extraction Processes (AREA)

Claims (3)

  1. Herstellungsart des kegelförmigen Rohrelementes, vor allem aus zylinderförmiger Aluminiumrohr, in dem der geradlinige Rohrelement der plastischen Verarbeitung unterzogen wird, charakteristisch dadurch, dass der geradlinige Rohrelement auf die Schaft des Formgeräts aufgezogen wird, wobei die Schaft die Länge von maximal 2m hat, danach wird ein Teil des Rohrelementes, der auf die Schaft aufgezogen wurde, gewalzt und dann wird der restliche Teil des Elementes gewalzt und gedehnt, ohne den technologischen Vorgang zu unterbrechen.
  2. Art gemäß Anspruchs 1, charakteristisch dadurch, dass der geradlinige Rohrelement auf zwei Schäfte des Formgeräts, je auf einer Seite des Rohrelementes, aufgezogen wird, wobei die Schäfte die Länge von maximal 2m haben, danach werden die Teilen des Rohrelementes, die auf die Schäfte aufgezogen wurden, zusammenlaufend in die Richtung der Mitte des Rohrelementes gewalzt, dann wird der restliche Teil des Elementes gewalzt und gedehnt, ohne den technologischen Vorgang zu unterbrechen. Schließlich wird der geformte zylinderförmige Element an der Schnittstelle der Konvergenz geschnitten.
  3. Art gemäß Anspruchs 1 oder 2, charakteristisch dadurch, dass der Teil des Rohrelementes, der vorher gewalzt und gedehnt wurde, bogenförmig zu der gewünschten Form gebogen wird, nachdem er aus der Schaft ausgezogen wurde.
EP12187464.8A 2012-10-05 2012-10-05 Verfahren zur Herstellung eines konischen Rohrelements Revoked EP2716377B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12187464.8A EP2716377B1 (de) 2012-10-05 2012-10-05 Verfahren zur Herstellung eines konischen Rohrelements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12187464.8A EP2716377B1 (de) 2012-10-05 2012-10-05 Verfahren zur Herstellung eines konischen Rohrelements

Publications (2)

Publication Number Publication Date
EP2716377A1 EP2716377A1 (de) 2014-04-09
EP2716377B1 true EP2716377B1 (de) 2016-03-02

Family

ID=48047778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12187464.8A Revoked EP2716377B1 (de) 2012-10-05 2012-10-05 Verfahren zur Herstellung eines konischen Rohrelements

Country Status (1)

Country Link
EP (1) EP2716377B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307923A (zh) * 2014-08-27 2015-01-28 陕西新精密合金有限责任公司 一种镍铁低碳钢铁镍钴合金异型管材料的加工方法

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576983A (en) 1944-04-25 1946-04-30 Albert Peter Thurston Rolling tapered tubes
US3713318A (en) 1971-01-14 1973-01-30 Reynolds Metals Co Apparatus for and method of forming a tubular metal blank into a tapered tube on a tapered mandrel
DE2230554A1 (de) 1972-06-22 1974-01-17 Leifeld & Co Anlenkgehaeuse fuer einen drehfederstab
DE2825723A1 (de) 1977-06-22 1979-01-11 Daiichi Koshuha Kogyo Kk Verfahren und vorrichtung zum biegen von langgestrecktem metallgut
DE2816862A1 (de) 1978-03-17 1979-09-27 Eaton Leonard Corp Rohrbiegemaschine und -verfahren
DE19723939A1 (de) 1997-06-06 1998-12-10 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung eines Abgaskatalysators
EP1283333A1 (de) 2001-08-10 2003-02-12 Leico GmbH & Co. Werkzeugmaschinenbau Verfahren zur Herstellung eines Abgaskatalysators
WO2005016569A1 (de) 2003-08-14 2005-02-24 Willy Voit Gmbh & Co. Kg Verfahren zum herstellen einteiliger hohlkörper, hohlkörper und verwendung des hohlkörpers
WO2005077562A1 (en) 2004-02-16 2005-08-25 Han Young Machinerey Co, Ltd. Method and apparatus for forming tapered steel pipe
EP1690610A1 (de) 2005-02-11 2006-08-16 Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA Verfahren zum Umformen von länglichen Bauteilen mit kreisförmigem, konstantem oder axial veränderbarem Querschnitt, insbesondere aus Aluminiumlegierung, durch dieses Verfahren hergestellter Bauteil sowie Vorrichtung zur Durchführung dieses Verfahrens
EP2127775A1 (de) 2008-05-26 2009-12-02 Repkon Machine and Tool Industry & Trade Ltd. Verfahren zur Fertigung von Werkstücken und Drückwalzmaschine dazu
EP2210682A1 (de) 2009-07-09 2010-07-28 Leifeld Metal Spinning GmbH Verfahren und Vorrichtung zum Abstreckdrückwalzen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL108238B1 (pl) 1976-12-28 1980-03-31 Inst Wlokien Chem Sposob wytwarzania mieszanej przedzy poliamidowo-pmethod of manufacturing mixed polyamide-polyester oliestrowej yarn

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576983A (en) 1944-04-25 1946-04-30 Albert Peter Thurston Rolling tapered tubes
US3713318A (en) 1971-01-14 1973-01-30 Reynolds Metals Co Apparatus for and method of forming a tubular metal blank into a tapered tube on a tapered mandrel
DE2230554A1 (de) 1972-06-22 1974-01-17 Leifeld & Co Anlenkgehaeuse fuer einen drehfederstab
DE2825723A1 (de) 1977-06-22 1979-01-11 Daiichi Koshuha Kogyo Kk Verfahren und vorrichtung zum biegen von langgestrecktem metallgut
DE2816862A1 (de) 1978-03-17 1979-09-27 Eaton Leonard Corp Rohrbiegemaschine und -verfahren
DE19723939A1 (de) 1997-06-06 1998-12-10 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung eines Abgaskatalysators
EP1283333A1 (de) 2001-08-10 2003-02-12 Leico GmbH & Co. Werkzeugmaschinenbau Verfahren zur Herstellung eines Abgaskatalysators
WO2005016569A1 (de) 2003-08-14 2005-02-24 Willy Voit Gmbh & Co. Kg Verfahren zum herstellen einteiliger hohlkörper, hohlkörper und verwendung des hohlkörpers
WO2005077562A1 (en) 2004-02-16 2005-08-25 Han Young Machinerey Co, Ltd. Method and apparatus for forming tapered steel pipe
EP1690610A1 (de) 2005-02-11 2006-08-16 Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA Verfahren zum Umformen von länglichen Bauteilen mit kreisförmigem, konstantem oder axial veränderbarem Querschnitt, insbesondere aus Aluminiumlegierung, durch dieses Verfahren hergestellter Bauteil sowie Vorrichtung zur Durchführung dieses Verfahrens
EP2127775A1 (de) 2008-05-26 2009-12-02 Repkon Machine and Tool Industry & Trade Ltd. Verfahren zur Fertigung von Werkstücken und Drückwalzmaschine dazu
EP2210682A1 (de) 2009-07-09 2010-07-28 Leifeld Metal Spinning GmbH Verfahren und Vorrichtung zum Abstreckdrückwalzen

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