EP0706843B1 - Verfahren und Vorrichtung zur Herstellung von gekrümmten Werkstücken - Google Patents

Verfahren und Vorrichtung zur Herstellung von gekrümmten Werkstücken Download PDF

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Publication number
EP0706843B1
EP0706843B1 EP95112843A EP95112843A EP0706843B1 EP 0706843 B1 EP0706843 B1 EP 0706843B1 EP 95112843 A EP95112843 A EP 95112843A EP 95112843 A EP95112843 A EP 95112843A EP 0706843 B1 EP0706843 B1 EP 0706843B1
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EP
European Patent Office
Prior art keywords
extrusion
die
extrudate
force
workpiece
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.)
Expired - Lifetime
Application number
EP95112843A
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German (de)
English (en)
French (fr)
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EP0706843A1 (de
Inventor
Matthias Prof. Dr. Kleiner
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.)
WKW Engineering GmbH
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Individual
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Filing date
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Publication of EP0706843A1 publication Critical patent/EP0706843A1/de
Application granted granted Critical
Publication of EP0706843B1 publication Critical patent/EP0706843B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, rods or tubes
    • B21C23/12—Extruding bent tubes or rods
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber

Definitions

  • the invention relates to a method for producing curved Hollow profiles through a combination of extrusion presses and bending and an apparatus for performing the method.
  • Extrusion processes for different materials are in many different ways Form known. Mainly come aluminum, copper alloys, but also steel and titanium are used. For the material Aluminum is the extrusion process in detail in the aluminum pocket book Pages 269 - 296 shown.
  • JP-A-03 047615 describes a method and an apparatus for Production of curved hollow profiles, whereby during the Bending a gas under pressure inside the Hollow profile is included. At a distance from the A guide member is arranged with a guide hole. By moving the guide member transversely to the extrusion direction there is a curvature of the hollow profile.
  • the object of the present invention is a method and to develop a device of the type mentioned that or with a simple means a defined curvature Extruded products in repeatable approximately predictable Way possible, even with complicated hollow profile cross sections the cross-sectional areas in the bent state compared to the cross-sectional areas of the straight profile should remain unchanged. Under "complex cross sections" especially those with large wall thickness differences, but also understood such profiles that have a small wall thickness have based on the circumscribing circle of the extruded profile.
  • any bending radii can act on the strand possible.
  • the workpiece experiences when exiting the die in a bending or shear load at the same temperature, whereby the stress distribution in the press channel of the extrusion die being affected.
  • the device according to the invention can also a ring shape of the workpiece can be generated.
  • the Forming tool brought into a suitable position and there fixed.
  • the workpiece can also have a constant Curvature or with an increasing or decreasing curvature as a coiled tubing or in spiral form.
  • multiple devices for bending the extruded profiles can also be used, however, one after the other Apply lateral forces to the extruded profile.
  • lateral forces to the extruded profile For example can be used to create spatially curved profiles several leadership roles on separate delivery devices one or more roller cages arranged one behind the other be combined.
  • the required forming force can be achieved by rolling as well can be applied to the profile using fixed tools. But there are also other active media such. B. gases, fluids or electric / magnetic fields for the generation of a suitable Forming force applicable. Instead of a forming roll or one Fixed sliding shoe must be used in the case of the use of active media the zone of influence of the active media is brought close to the workpiece must be, for example, when using electromagnetic A suitably shaped magnetic coil in immediate fields Be brought close to the strand.
  • the extrusion device consists of a stamp 1, a block sensor 2, in which the stamp 1 in the direction of the arrow is insertable, and a die 4, which is in Seen pressing direction against a crosshead 5 supports.
  • the bending radius R By moving the pressure roller 7 transversely to the direction of extrusion the bending radius R can be influenced. It is for the person skilled in the art can easily see how he can by a suitable Control or regulation position the pressure roller 7 or can orientate that a predetermined curvature achieved both in level and in spatial training becomes. This is not only the formation of the workpiece curvature on one level, but also in any room multiple changes in the feed direction possible, so very complex workpiece geometries with the device according to the invention are producible.
  • FIG. 2 a further embodiment of the extrusion and bending device according to the invention is shown.
  • a sliding surface 8 generating a transverse force is shown immediately following the die holder 5.
  • this can be adjustable or, as shown in the exemplary embodiment according to FIG. 2, can be arranged in a stationary manner. This allows curved structures to be produced in a simple manner.
  • a roller cage is used in a corresponding manner to apply the transverse force, so that depending on the positioning relative to the die, different deformations with radii R 1 and R 2 can be applied to the strand.
  • the device according to the invention it has now been possible to solve the manufacturing problems of curved problems in that the workpiece simultaneously with or immediately after the shaping Extrusion process deformed with a precisely controllable force becomes.
  • the workpieces leave with defines the curved longitudinal axis of the extrusion device, wherein the curvature of the workpiece can be adjusted in a defined manner in the longitudinal axis is.
  • the workpiece cross sections formed in the extrusion die 4 are influenced in such a way that they are not parallel to each other emerge from the die, but stand at an angle to each other, the size of the angle by the geometry and the Positioning or orientation of those applying the transverse force Device is determined.
  • the following is a procedure for determining the delivery route of the bending or guiding tool depending on the contour of the bent workpiece and the pressing path at a constant Radius shown.
  • the workpiece contour is specific to the geometric during manufacture Boundary conditions linked.
  • the contour has to be because of the manufacturing process match with the die and tangentially to the exit axis, d. H. stand perpendicular to the exit plane.
  • the infeed path z can be determined with the known distance a from the exit plane depending on the radius using the secant equation (see Figure 1);
  • the contour to be produced is generally described as a space curve in a coordinate system, so for any point on the one hand, the coordinates themselves are determined and continue with the methods of curve geometry a tangent vector for this point can be calculated. With this tangent vector, the according to the above conditions with the exit axis is identical, the delivery path of the guide tool can simple calculations can be determined. It is still possible to determine the length of the contour, so that the delivery path as Function of the press path can be specified.
  • the contour can for the control program of a manipulator or the like available as a function or as a table of values. In picture 2 is the geometric approach for any contour.
  • Figure 4 is the production of twisted profile sections shown.
  • the strand 15 emerging from the die 14 becomes inserted in a roller cage 16, the roller axis 17 around rotated an angle ⁇ relative to the vertical profile edge 18 is.
  • the hatched area 19 represents the profile opening in the die 14 is in a view against the pressing direction.
  • the roller cage is in front of the die by an angle ⁇ twisted against the orientation of the profile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Extrusion Of Metal (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP95112843A 1994-08-17 1995-08-16 Verfahren und Vorrichtung zur Herstellung von gekrümmten Werkstücken Expired - Lifetime EP0706843B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428827A DE4428827A1 (de) 1994-08-17 1994-08-17 Verfahren zur Herstellung von gekrümmten Werkstücken durch eine Kombination von Strangpressen und Biegen
DE4428827 1994-08-17

Publications (2)

Publication Number Publication Date
EP0706843A1 EP0706843A1 (de) 1996-04-17
EP0706843B1 true EP0706843B1 (de) 1999-01-20

Family

ID=6525687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112843A Expired - Lifetime EP0706843B1 (de) 1994-08-17 1995-08-16 Verfahren und Vorrichtung zur Herstellung von gekrümmten Werkstücken

Country Status (5)

Country Link
EP (1) EP0706843B1 (da)
AT (1) ATE175907T1 (da)
DE (2) DE4428827A1 (da)
DK (1) DK0706843T3 (da)
ES (1) ES2129715T3 (da)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10209481C1 (de) * 2002-03-05 2003-12-04 Wkw Erbsloeh Automotive Gmbh Verfahren zum Ablängen eines Strangpressprofils
DE10241028B3 (de) * 2002-09-05 2004-07-29 Erbslöh Ag Verfahren zur Herstellung von bogenförmigen (gerundeten) Strukturbauteilen aus einem Strangpreßprofil
DE10317080A1 (de) * 2003-04-12 2004-11-11 Peter Stolfig Verfahren und Anordnung zur Herstellung von Blechformteilen
DE10329697B3 (de) * 2003-07-02 2005-01-20 WKW Erbslöh Automotive GmbH Verfahren zur Herstellung von gekrümmten Werkstücken durch Strangpressen und Runden
DE10329696B3 (de) * 2003-07-02 2005-03-03 WKW Erbslöh Automotive GmbH Verfahren zur Herstellung einer Mehrzahl gekrümmter Strangpressprofile
DE10141328B4 (de) * 2001-08-28 2005-04-14 Sms Eumuco Gmbh Verfahren und Vorrichtung zum Stangpressen von gekrümmten Strangpreßprofilen
DE10110035B4 (de) * 2001-03-02 2005-05-04 Sms Eumuco Gmbh Auslaufeinrichtung einer Strangpressanlage
DE10150021B4 (de) * 2001-10-11 2005-08-04 Peter Stolfig Verfahren und Vorrichtung zur Herstellung von Profilen oder Blechformteilen aus Magnesium oder Magnesiumlegierungen
CN100382905C (zh) * 2003-04-15 2008-04-23 彼德·施托尔菲希 制造异形板部件的方法和设备
CN101905249A (zh) * 2010-07-30 2010-12-08 长沙仲腾金属材料科技有限公司 一种结合在线淬火控温的弯曲型材短流程加工方法和装置
DE10156034B4 (de) * 2001-11-15 2012-05-03 Techmag Ag Vorrichtung zur Herstellung von Profilen oder Blechformteilen aus Magnesium oder Magnesiumlegierungen
DE102008047015B4 (de) * 2007-09-14 2013-09-12 Hyundai Mobis Co., Ltd. Lenkerarm mit Doppelhohlraum, der durch einen Strangpressprozess mit variabler Krümmung hergestellt wird
DE102014008646B3 (de) * 2014-06-13 2015-09-24 Ulrich Bruhnke Verfahren zur Herstellung von geschlossenen ringförmigen Konstruktionsbauteilen aus Leichtmetall, sowie Anordnung zur Durchführung des Verfahrens

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716292C2 (de) 1997-04-18 2001-02-01 Daimler Chrysler Ag Strangpreßvorrichtung
DE19912353B4 (de) * 1999-03-19 2006-01-19 Airbus Deutschland Gmbh Vorrichtung zum Biegen eines strangförmigen Winkelprofils
DE10111062A1 (de) * 2001-03-08 2002-09-19 Sms Eumuco Gmbh Verfahren und Strangpreßanlage, insbesondere zum Herstellen von gekrümmten Strangpreßprodukten
DE10120953A1 (de) * 2001-04-27 2002-10-31 Sms Eumuco Gmbh Verfahren zum Abtrennen von Teillängen beim Strangpressen
DE10236297A1 (de) 2002-08-08 2004-02-19 Sms Eumuco Gmbh Haupt- bzw. Preßzylinder einer Rohr- und Strangpresse
DE10236299A1 (de) * 2002-08-08 2004-02-19 Sms Eumuco Gmbh Strangpresse, insbesondere zum Herstellen von gekrümmten Strangpreßprodukten
DE10311169A1 (de) * 2003-03-12 2004-09-23 Sms Eumuco Gmbh Vorrichtung zum Strangpressen von gekrümmten Strangpreßprofilen
DE10340772A1 (de) 2003-09-02 2005-03-24 Sms Eumuco Gmbh Verfahren und Vorrichtung zum Strangpressen von gekrümmten Strangpressprofilen
DE102004033200B3 (de) * 2004-07-09 2005-10-20 Erbsloeh Ag Verfahren zur Herstellung von gekrümmten Werkstücken durch Strangpressen und nachfolgendes Biegen
DE102009039759A1 (de) 2009-08-31 2011-03-03 Technische Universität Dortmund Verfahren und Vorrichtung zum Strangpressen und nachfolgender elektromagnetischer Umformung
RU2403111C1 (ru) * 2009-10-08 2010-11-10 Открытое Акционерное Общество "Корпорация Всмпо-Ависма" Способ изготовления профилей с регламентированной кривизной и устройство для его осуществления
AT510218A1 (de) * 2010-07-28 2012-02-15 Siemens Ag Oesterreich Strangpressverfahren
EP2594346A1 (de) * 2011-11-15 2013-05-22 ThyssenKrupp Steel Europe AG Verfahren und Vorrichtung zur Herstellung von Profilen mit lageveränderlicher, längsorientierter Ausformung
DE102016219912A1 (de) * 2016-10-13 2018-04-19 Bayerische Motoren Werke Aktiengesellschaft 3D-Spritzpressvorrichtung und Verfahren zur Herstellung eines 3D-Hohlprofils
GB2580955B (en) * 2019-01-31 2021-03-10 Imperial College Innovations Ltd Apparatus and method for extruding curved profiles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33042C (de) * C. UHL1G in Berlin Vorrichtung zur Plerstellung gekrümmter Röhren
DE513714C (de) * 1927-11-25 1930-12-01 Ver Stahlwerke Ag Vorrichtung zur Herstellung von um ihre Achse verwundenen Kanteisen, sogenannten Drilleisen aus ebenflaechigen Profilstaeben
JPH02137612A (ja) * 1988-11-16 1990-05-25 Showa Alum Corp 押出加工装置
JPH0347615A (ja) * 1989-07-11 1991-02-28 Showa Alum Corp 湾曲状真空用アルミニウム中空押出型材の製造方法
NL9200138A (nl) 1992-01-24 1993-08-16 Reynolds Aluminium Bv Extrusiewerkwijze en extrusieinrichting.
JP3022036B2 (ja) * 1992-02-24 2000-03-15 テイエチケー株式会社 レールの製造方法及び製造装置

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110035B4 (de) * 2001-03-02 2005-05-04 Sms Eumuco Gmbh Auslaufeinrichtung einer Strangpressanlage
DE10141328B4 (de) * 2001-08-28 2005-04-14 Sms Eumuco Gmbh Verfahren und Vorrichtung zum Stangpressen von gekrümmten Strangpreßprofilen
DE10150021B4 (de) * 2001-10-11 2005-08-04 Peter Stolfig Verfahren und Vorrichtung zur Herstellung von Profilen oder Blechformteilen aus Magnesium oder Magnesiumlegierungen
DE10156034B4 (de) * 2001-11-15 2012-05-03 Techmag Ag Vorrichtung zur Herstellung von Profilen oder Blechformteilen aus Magnesium oder Magnesiumlegierungen
DE10209481C1 (de) * 2002-03-05 2003-12-04 Wkw Erbsloeh Automotive Gmbh Verfahren zum Ablängen eines Strangpressprofils
DE10241028B3 (de) * 2002-09-05 2004-07-29 Erbslöh Ag Verfahren zur Herstellung von bogenförmigen (gerundeten) Strukturbauteilen aus einem Strangpreßprofil
DE10317080A1 (de) * 2003-04-12 2004-11-11 Peter Stolfig Verfahren und Anordnung zur Herstellung von Blechformteilen
DE10317080B4 (de) * 2003-04-12 2006-04-13 Peter Stolfig Verfahren zur Herstellung von Blechformteilen und Vorrichtung zur Durchführung des Verfahrens
CN100382905C (zh) * 2003-04-15 2008-04-23 彼德·施托尔菲希 制造异形板部件的方法和设备
DE10329696B3 (de) * 2003-07-02 2005-03-03 WKW Erbslöh Automotive GmbH Verfahren zur Herstellung einer Mehrzahl gekrümmter Strangpressprofile
US7197907B2 (en) 2003-07-02 2007-04-03 Wkw Erbsloh Automotive Gmbh Method for producing a plurality of curved extruded profiles
DE10329697B3 (de) * 2003-07-02 2005-01-20 WKW Erbslöh Automotive GmbH Verfahren zur Herstellung von gekrümmten Werkstücken durch Strangpressen und Runden
DE102008047015B4 (de) * 2007-09-14 2013-09-12 Hyundai Mobis Co., Ltd. Lenkerarm mit Doppelhohlraum, der durch einen Strangpressprozess mit variabler Krümmung hergestellt wird
CN101905249A (zh) * 2010-07-30 2010-12-08 长沙仲腾金属材料科技有限公司 一种结合在线淬火控温的弯曲型材短流程加工方法和装置
CN101905249B (zh) * 2010-07-30 2012-01-04 长沙仲腾金属材料科技有限公司 一种结合在线淬火控温的弯曲型材短流程加工方法和装置
DE102014008646B3 (de) * 2014-06-13 2015-09-24 Ulrich Bruhnke Verfahren zur Herstellung von geschlossenen ringförmigen Konstruktionsbauteilen aus Leichtmetall, sowie Anordnung zur Durchführung des Verfahrens
WO2015188801A1 (de) 2014-06-13 2015-12-17 Bruhnke, Ulrich Verfahren und anordnung zur herstellung von offenen oder geschlossenen ringförmigen konstruktionsbauteilen aus leichtmetall und deren legierungen mit einer zwei- oder dreidimensionalen struktur

Also Published As

Publication number Publication date
EP0706843A1 (de) 1996-04-17
ATE175907T1 (de) 1999-02-15
ES2129715T3 (es) 1999-06-16
DE59504890D1 (de) 1999-03-04
DE4428827A1 (de) 1996-03-14
DK0706843T3 (da) 1999-09-13

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