EP1960135A1 - Verfahren zur herstellung eines röhrenförmigen elements, das ein rohr mit einem fest angeordneten flansch umfasst - Google Patents

Verfahren zur herstellung eines röhrenförmigen elements, das ein rohr mit einem fest angeordneten flansch umfasst

Info

Publication number
EP1960135A1
EP1960135A1 EP06824639A EP06824639A EP1960135A1 EP 1960135 A1 EP1960135 A1 EP 1960135A1 EP 06824639 A EP06824639 A EP 06824639A EP 06824639 A EP06824639 A EP 06824639A EP 1960135 A1 EP1960135 A1 EP 1960135A1
Authority
EP
European Patent Office
Prior art keywords
flange
tube
blank
tubular
shape
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.)
Withdrawn
Application number
EP06824639A
Other languages
English (en)
French (fr)
Other versions
EP1960135A4 (de
Inventor
Jan Ericson
Martin HOLMSTRÖM
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.)
Hydroforming Design Light AB
Original Assignee
Hydroforming Design Light AB
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
Application filed by Hydroforming Design Light AB filed Critical Hydroforming Design Light AB
Publication of EP1960135A1 publication Critical patent/EP1960135A1/de
Publication of EP1960135A4 publication Critical patent/EP1960135A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies

Definitions

  • a method for manufacturing of a tubular element comprising a tube with a fixedly arranged flange
  • the present invention relates to a method for manufacturing of a tubular element which comprises a tube with a fixedly arranged flange, wherein the tube is manufactured of a tubular blank and that the flange is manufactured of a flange blank having a through hole.
  • tubes having a complicated shape are manufactured by a hydroforming process. Many times such tubes are pro- vided with a flange at an end portion such that they are connectable to associated components or tubes.
  • the flange is often fastened to the tube by welding or soldering after that it has been hydroformed to its final shape.
  • the work to fasten flanges to tubes demands a great deal of work and is time wasting. Therefore, the manufactur- ing cost for manufacturing of such tubular elements is relatively high.
  • the object of the present invention is to provide a method for manufacturing of a tubular element, which comprises a tube with a fixedly arranged flange, in a simple and effective manner such that the manufacturing cost for such a tubular element will be relatively low.
  • the method of the initially mentioned kind which is characterized by the steps of moving the flange blank into said hole of the tubular blank, placing the tubular blank and the flange blank, in this state, in a hydroforming tool, and providing a hydroforming process with such a high internal pressure in the tubu- lar blank that it expands plastically to said tube at the same time as the expansion of the tubular blank widens the opening of the flange blank during the process in an at least partly elastic manner such that a permanent state of tension is created in the final flange, which state exerts a compressive force on the tube in a connecting area such that a fixed connection is accomplished between the flange and the tube.
  • a tubular element can here be manufactured with a fixedly arranged flange during a hydroforming process.
  • a condition for enabling a tubular element to be used to transport gaseous and liquid media is that a completely sealed connection can be created between the flange and the tube in the connecting area.
  • the method comprises the step of performing a hydroforming process where the tube is provided with at least one radially projecting portion in connection to the connecting area with the flange, which radially projecting portion has a shape and location such that a displacement of the flange in relation to the tubular element is prevented in at least one axial direction.
  • the risk is substantially completely eliminated that axial displacement motions of the flange in relation to the tube arise in this direction.
  • the tube may be provided with radially projecting portions such that the risk for motions in both the possible axial directions is eliminated.
  • the method comprises the step of using a flange blank having a through hole which has a shape differing from a circular shape such that the outer surface of the final tube provides a corresponding shape in the connecting area, which results in a shape connection being created in the connecting area which prevents turning motions of the flange in relation to the tube.
  • Fig. 1 shows a tubular blank and a flange blank for manufacturing of a tubular element according to the present invention
  • Fig. 2 shows a tubular blank and a flange blank applied in a hydroforming tool
  • Fig. 3 shows the finally manufactured tubular element
  • Fig. 4 shows the manufacturing of an alternative tubular element
  • Fig. 5 shows the alternative tubular element in a finally manufactured state
  • Fig. 6 shows the manufacturing of a further alternative tubular element
  • Fig. 7 shows a tubular blank applied in an octagonal hole of a flange blank.
  • the present invention relates to a method for manufacturing of a tubular element with a fixedly connected flange.
  • Fig. 1 shows a tubular blank 1 and a flange blank 2 by means of which the tubular element is manufactured.
  • the flange blank 2 is provided with a through hole 2a which is larger than the circumference of the tubular blank 1.
  • the method is initiated by moving the tubular blank 1 into the hole 2a of the flange blank 2, which is shown in Fig. 1. Thereafter, the tubular blank 1 and the flange blank 2 are placed, in this state, in a hydroforming tool, which is shown in Fig. 2.
  • the hy- droforming tool consists of an upper tool half 3a and a lower tool half 3b which are movably arranged in relation to each other be- tween an open position and a closed position.
  • the tools halves 3a, b have, in the closed position, inner wall surfaces which define the outer surface of the hydroformed product.
  • the tool halves 3a, b have, in this case, been configured with a groove 4 having a size and a shape adapted to receive the flange blank 2. However, the groove 4 has a somewhat larger extension in a radial direction than the flange blank 2.
  • the tool halves 3a, b comprise laterally arranged openings in which end feed cylinders 5 are applied during the hydroforming process. However, only one lateral opening is shown in the figures.
  • a liquid with a very high pressure is directed in through the opening to an inner space 6 of the tubular blank 1 by means of the end feed cylinder 5.
  • the liquid pressure is so high that it causes the tubular blank 1 to flow and be formed plastically after the inner wall surfaces of the tool halves 3a, b to a final tube 1 '.
  • the final tube Y has a somewhat larger outer diameter than the hole 2a of the flange blank.
  • the hydroforming pressure is so high that the tubular blank 2 provides a continued expansion even in this connecting area 7 such that the opening 2a of the flange blank is widen.
  • the tool halves 3a, b have been provided with a surrounding groove 4 which is somewhat larger in a radial direction than the flange blank 2, the flange blank can expand in a radial direction into the groove 4. This expansion occurs more or less elastically.
  • the tubular blank 1 has been expanded plastically to a tube 1 ' with a desired shape and size, which is shown in Fig. 3.
  • the flange blank 2 has been expanded at least partly in an elastic manner such that a permanent state of tension has been created in the final flange 2'.
  • the final flange 2' will thus exert a ra- dially inwardly directed compressive force on the tube Y in the connecting area 7.
  • a compressive force can be created which provides a very firm and tight connection between the tube Y and the flange 2'. Consequently, the final product picked out from the tool halves 3a, b consists of a tubular element in the form of a tube Y with a fixedly arranged flange 2'.
  • Fig. 4 shows the manufacturing of an alternative tubular element which has a further strengthened connection between the tube Y and the flange 2'.
  • the tool halves 3a, b also have been provided with a recess 8 in connection to the groove 4.
  • a correspondingly shaped projecting portion 8' is created on the tube Y in connection to the flange 2' during a hydroforming process.
  • the tool halves 3a, b comprise a recess 9 in connection to an opposite side of the groove 4.
  • a correspondingly shaped projecting portion 9 is created on the tube 1 ' in connection to the flange 2' during the hydroforming process.
  • the final tubular element with tube Y and flange 2' is shown in Fig. 5.
  • a sealing material 1 1 has here been applied in the gap between the tubular blank 1 and the flange 2 before the hydroforming process is started.
  • the sealing material 1 1 forms an ensurely sealed connection between the tube 1 ' and the flange 2' in the contact surface 7 of the final tubular element.
  • such a sealing material may consist of an O-ring which is applied in a groove of the flange blank 2.
  • Fig. 6 shows a flange blank 2 having a radial recess 10 in the surfaces which define the hole 2a.
  • the tubular blank 1 is pressed into the radial recess 10.
  • the hydroformed tube Y will thus get a radially protruding portion which protrudes into the recess 10 of the final flange 2'.
  • the flange 2' is prevented from being displaced axially on the tube 1 ' in both directions.
  • Fig. 7 shows a flange blank 2 having a through hole 2a with an oc- tagonal shape.
  • the tubular blank 1 will expand such that the outer surface of the final tube V provides, in a connecting area 7, an octagonal shape corresponding to the final flange 2'.
  • a shape connection is thus created in the connecting area between the tube 1 ' and the flange 2', which connection prevents turning motions of the flange 2' in relation to the tube V.
  • Such a shape connection can be created by means of a flange blank having a through hole 2a with a shape differing from a circular shape. Thereby, the fixed connection between the tube V and the flange 2' of a tubular element may be further strengthened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP06824639A 2005-12-15 2006-12-14 Verfahren zur herstellung eines röhrenförmigen elements, das ein rohr mit einem fest angeordneten flansch umfasst Withdrawn EP1960135A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0502768A SE529552C2 (sv) 2005-12-15 2005-12-15 Förfarande för att tillverka ett rörformigt element, samt sådant rörformigt element
PCT/SE2006/050581 WO2007070003A1 (en) 2005-12-15 2006-12-14 A method for manufacturing of a tubular element comprising a tube with a fixedly arranged flange

Publications (2)

Publication Number Publication Date
EP1960135A1 true EP1960135A1 (de) 2008-08-27
EP1960135A4 EP1960135A4 (de) 2011-05-11

Family

ID=38163205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06824639A Withdrawn EP1960135A4 (de) 2005-12-15 2006-12-14 Verfahren zur herstellung eines röhrenförmigen elements, das ein rohr mit einem fest angeordneten flansch umfasst

Country Status (3)

Country Link
EP (1) EP1960135A4 (de)
SE (1) SE529552C2 (de)
WO (1) WO2007070003A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106077309B (zh) * 2016-07-04 2018-05-01 潍坊市高品机械制造有限公司 加机油口自动涨接装置
DE102020118536A1 (de) * 2020-07-14 2022-01-20 Olympus Winter & Ibe Gmbh Verfahren zur Herstellung eines chirurgischen Handgeräts und ein chirurgisches Handgerät

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302762A1 (de) * 1982-08-11 1984-02-16 Kokan Kako Co., Ltd., Yokohama, Kanagawa Verfahren zur befestigung eines bauteils am aussenumfang eines rohrs
JPS62251410A (ja) * 1986-04-24 1987-11-02 Musashi Seimitsu Ind Co Ltd 組立カムシヤフト
JPS639603A (ja) * 1986-06-27 1988-01-16 Musashi Seimitsu Ind Co Ltd 組立カムシヤフト
US4763503A (en) * 1985-12-31 1988-08-16 Hughes Robert W Apparatus for making a cam shaft
EP0320789A2 (de) * 1987-12-15 1989-06-21 Emitec Gesellschaft für Emissionstechnologie mbH Verfahren zum Verbinden
US5101554A (en) * 1986-10-01 1992-04-07 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for producing an assembled camshaft as well as assembled camshaft consisting of a shaft tube and slid-on elements
DE4306496A1 (de) * 1993-03-03 1994-06-01 Zeuna Staerker Kg Verfahren zur Herstellung eines Rohrstückes mit Flansch
DE10002620A1 (de) * 2000-01-22 2001-07-26 Volkswagen Ag Verfahren zur Herstellung einer Schiebeverbindung durch Aufweiten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103244A (en) * 1960-04-18 1963-09-10 Flexonics Corp Apparatus for making flexible tubing
JPS5617127A (en) * 1979-07-23 1981-02-18 Kuniyoshi Nakamura Manufacture of crank shaft of refrigerator
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming
DE19932421A1 (de) * 1999-07-15 2001-01-18 Alusuisse Tech & Man Ag Verfahren und Vorrichtung zum Verbinden zweier Formteile, Hohlprofil mit einem an ihm festliegendem Kupplungs- oder Flanschelement sowie Verwendung
NL1014268C2 (nl) * 2000-02-02 2001-08-03 Corus Staal Bv Werkwijze en inrichting voor het vormgeven van een metalen busmantel, en een aldus vormgegeven metalen busmantel.
DE10205540C1 (de) * 2002-02-08 2003-06-18 Muhr & Bender Kg Verfahren und Vorrichtung zum Fügen von gebauten Hohlwellen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302762A1 (de) * 1982-08-11 1984-02-16 Kokan Kako Co., Ltd., Yokohama, Kanagawa Verfahren zur befestigung eines bauteils am aussenumfang eines rohrs
US4763503A (en) * 1985-12-31 1988-08-16 Hughes Robert W Apparatus for making a cam shaft
JPS62251410A (ja) * 1986-04-24 1987-11-02 Musashi Seimitsu Ind Co Ltd 組立カムシヤフト
JPS639603A (ja) * 1986-06-27 1988-01-16 Musashi Seimitsu Ind Co Ltd 組立カムシヤフト
US5101554A (en) * 1986-10-01 1992-04-07 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for producing an assembled camshaft as well as assembled camshaft consisting of a shaft tube and slid-on elements
EP0320789A2 (de) * 1987-12-15 1989-06-21 Emitec Gesellschaft für Emissionstechnologie mbH Verfahren zum Verbinden
DE4306496A1 (de) * 1993-03-03 1994-06-01 Zeuna Staerker Kg Verfahren zur Herstellung eines Rohrstückes mit Flansch
DE10002620A1 (de) * 2000-01-22 2001-07-26 Volkswagen Ag Verfahren zur Herstellung einer Schiebeverbindung durch Aufweiten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007070003A1 *

Also Published As

Publication number Publication date
SE0502768L (sv) 2007-06-16
WO2007070003A1 (en) 2007-06-21
EP1960135A4 (de) 2011-05-11
SE529552C2 (sv) 2007-09-11

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