EP0895819A1 - Procédé et dispositif pour former un élément de jonction sur un profilé creux - Google Patents

Procédé et dispositif pour former un élément de jonction sur un profilé creux Download PDF

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Publication number
EP0895819A1
EP0895819A1 EP98113750A EP98113750A EP0895819A1 EP 0895819 A1 EP0895819 A1 EP 0895819A1 EP 98113750 A EP98113750 A EP 98113750A EP 98113750 A EP98113750 A EP 98113750A EP 0895819 A1 EP0895819 A1 EP 0895819A1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
stamp
pressure
forming
engraving
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.)
Granted
Application number
EP98113750A
Other languages
German (de)
English (en)
Other versions
EP0895819B1 (fr
Inventor
Pierre Bonny
Thomas Hülsberg
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Daimler Benz AG
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 DaimlerChrysler AG, Daimler Benz AG filed Critical DaimlerChrysler AG
Publication of EP0895819A1 publication Critical patent/EP0895819A1/fr
Application granted granted Critical
Publication of EP0895819B1 publication Critical patent/EP0895819B1/fr
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/24—Making other particular articles nuts or like thread-engaging members
    • 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
    • B21D22/10—Stamping using yieldable or resilient pads
    • B21D22/105—Stamping using yieldable or resilient pads of tubular products
    • 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
    • B21D26/035—Deforming tubular bodies including an additional treatment performed by fluid pressure, e.g. perforating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49442—T-shaped fitting making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure

Definitions

  • the invention relates to a method for producing a mounting connection on a hollow profile according to the preamble of the claim 1 and an apparatus for performing the method according to the preamble of claim 6.
  • a generic method or a generic device is known from DE 41 03 083 C1.
  • a metal pipe branch described by means of hydroforming will be produced.
  • Such turned out Mounting surfaces are due to the internal high pressure forming trained precisely for the respective application, however, require additional installation space that is narrow Construction is undesirable.
  • the specially shaped forming tool very complex to manufacture and through its Form aur a very specific type of mounting surfaces fixed for all and therefore different for training assembly surfaces to be designed completely unsuitable.
  • the production of assembly surfaces the high degrees of deformation required on the hollow profile, not reliably possible, because the expansion of the hollow profile material due to the pure expansion soon exceeded, the hollow profile then bursts.
  • the invention has for its object a generic To further develop a method and a generic device, that the training of a space-saving for a later assembly in a correct position and with respect to the contour mounting connection matched to the mounting part in simple Process reliable even with the requirement of high degrees of deformation is achieved.
  • the task is according to the invention by the features of the claim 1 regarding the procedure and the characteristics of claim 6 solved with respect to the device.
  • connection is countersunk into the hollow profile created for assembly, eliminating the need for a additional space for joining the hollow profile with a Mounting part does not occur, so that the installation extremely space-saving is executable.
  • Due to the hydroforming process becomes the connection point of the hollow profile with respect to their Relative position formed tolerance-free and in the contouring through appropriate training of the stamp in cooperation with the internal high pressure quasi-negative on the connection point of the assembly part in an advantageous manner, being a secure, durable joint between the hollow profile and the mounting part is achieved in which a optimal form fit and thus an optimal one for the joint connection precise fit of the two joining partners, the hollow profile and the mounting part, exists together.
  • the manufacturing device is made considerably more flexible for this, as varied by simply replacing the stamp Connection points can be formed without a completely new forming tool is required. That too is easy replacement of a worn stamp for a new one in terms of costs considerably cheaper than that Reworking an entire tool or even as a replacement of the used tool with a new one.
  • the invention can also connect points on the hollow profile with high degrees of deformation be made, because the denting a cheap Pre-deformation of the hollow profile is achieved, including areas of the hollow profile, which was originally before the dent further away from the connection point, due to the dent be drafted in at this point, so that for the Final shaping by means of internal high pressure enough hollow profile material is available.
  • Fig. 1 is an internal high-pressure forming tool 1 of the invention Device shown, which in an upper tool 2 and a lower tool not shown here is divided.
  • the upper tool 2 has a bushing 3, which opens into the engraving 4 of the forming tool 1.
  • the implementation 3 can have any geometric cross section, is here however as a circular cylindrical guide bore educated.
  • a stamp 5 is guided, the back with a preferably hydraulic drive connected is.
  • the stamp 5 has one engraved on it 4 inserted hollow profile 6 facing end face 7 a Embossing contour 8, which makes the end face 7 rounded and the centrally a knob-like elevation 9 to the hollow profile 6 owns.
  • the course of the embossed contour 8 can be as desired be formed, with rounded contours for that explained below Procedures are favorable, since none of them may cause cracks sharp edges occur.
  • the embossing contour 8 must be on all Form negative to the desired contour of the one to be created Assembly connection 10 must be coordinated, unless the stamp 5 would counter in a procedural step after denting exchanged another stamp, which is then the appropriate one Has contour for forming the desired mounting 10 and occupies the stamp 5's leaning position. So could the hollow profile 6 with the rounded punch 5 gently dented be what after the final shaping of the assembly connection 10 by generating an internal high pressure of the Place the stamp 5 taking stamp on its front side can also be formed with sharp edges. However requires this intermediate step process time and justifies additional tooling effort and costs.
  • the stamp 5 is located in FIG. 1 with its end face 7 still within the implementation 3, being within the in the Forming tool 1 inserted hollow profile 6 no internal high pressure is produced.
  • the pressure inside the pressurized fluid filled hollow profile 6 can be atmospheric pressure or a have a pressure level below the forming pressure.
  • the hollow profile 6 can also be empty. A filling can do so be of advantage that when denting the hollow profile 6 an unexpected crack of the hollow profile 6 due to an occurring leakage in a simple manner before the internal high pressure is applied can be detected. On the other hand the filling brings an unwanted resistance to the engraving moving punch 5 denting the hollow profile 6.
  • the in the hollow profile 6 introduced pressurized fluid at high pressure, while the stamp 5 remains in its dent position.
  • the stamp 5 is on the back of its drive supported against the internal high pressure.
  • the hollow profile wall is now exposed to the effects of high internal pressure 13 entirely on the stamp 5 circumferentially and on the face with the spaces 17 and 18 disappearing.
  • the contour The assembly connection 10 is thus completed, in the area the opening of the passage 3 for engraving 4 the indentation resulting from the engraving 4 protruding indentations the hollow profile wall 13 by pressing it against the Engraving 4 can be leveled. This will be a high quality Outer contour of the hollow profile 6 also in the area of the assembly connection 10 guaranteed.
  • the pressure fluid is released and passed out of the forming tool 1.
  • the stamp 5 is made the engraving 4 and thus from the trough-shaped mounting connection 10 move out into bushing 3 to the initial state.
  • the drive for the stamp 5 is so in this phase interpret that any clamping effect caused by the internal high pressure pressed to the circumference of the stamp 5 hollow profile wall 13 can be easily overcome. Otherwise, the Stamp 5 in terms of its peripheral and frontal contour be designed without undercuts so that the translational Driving out of the assembly link 10 without hindrance from can go.
  • the assembly part can itself be a workpiece with positioning or fastening elements for which the Mounting connection is designed accordingly, such as one from the bodyshell of a motor vehicle or a joining part, which is inserted into the mounting connection 10 with a precise fit becomes.
  • stamp 5 has an external thread on its circumference carries that in the course of the process as an internal thread 19 in the hollow profile wall 13 by pressing by means of internal high pressure impresses (Fig. 4).
  • the stamp 5 can be done after Production of such an assembly connection in a simple manner be unscrewed from the assembly connection.
  • the thread can be a screw thread or for a bayonet lock be trained accordingly. This makes it extremely easy Way on curved surfaces, such as the hollow profile 6, without intermediate part and complex welding or gluing work durable screw connections are formed.
  • the process step forming the secondary molding element provides hollow profile material for the subsequent mechanical denting, since for the production of the Secondary shaped element not only the hollow profile wall piece, which covers the opening of the feedthrough 3, is pressed into the feedthrough 3, but also flows from the areas of the hollow profile 6 adjacent to the wall piece, the hollow profile material flows into the feedthrough 3, which is additionally forced by the re-pushing process If high degrees of deformation are required in the denting process, which takes place below a hydroforming pressure, sufficient hollow profile material is provided in order to provide process reliability in this process step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Clamps And Clips (AREA)
EP98113750A 1997-08-02 1998-07-23 Procédé et dispositif pour former un élément de jonction sur un profilé creux Expired - Lifetime EP0895819B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19733476A DE19733476C2 (de) 1997-08-02 1997-08-02 Verfahren zur Herstellung einer montagegerechten Anbringungsstelle an einem Hohlprofil
DE19733476 1997-08-02

Publications (2)

Publication Number Publication Date
EP0895819A1 true EP0895819A1 (fr) 1999-02-10
EP0895819B1 EP0895819B1 (fr) 2002-09-18

Family

ID=7837805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113750A Expired - Lifetime EP0895819B1 (fr) 1997-08-02 1998-07-23 Procédé et dispositif pour former un élément de jonction sur un profilé creux

Country Status (4)

Country Link
US (2) US6581263B1 (fr)
EP (1) EP0895819B1 (fr)
DE (2) DE19733476C2 (fr)
ES (1) ES2183263T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321201A2 (fr) * 2001-12-19 2003-06-25 Bayerische Motoren Werke Aktiengesellschaft Méthode de fabrication par hydroformage
CN109482718A (zh) * 2018-09-21 2019-03-19 北京长城华冠汽车科技股份有限公司 开孔方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162394A1 (de) * 2001-12-19 2003-07-03 Bayerische Motoren Werke Ag Fertigungsverfahren und Innenhochdruckumformwerkzeug zur Durchführung des Fertigungsverfahrens
DE102008010830A1 (de) 2008-02-23 2009-08-27 Daimler Ag Verfahren und Vorrichtung zur Herstellung einer Blechverbindungsstelle sowie Blechverbindungsstelle
CN113523119A (zh) * 2020-04-20 2021-10-22 深圳市大富科技股份有限公司 在薄板上增加螺孔深度的方法、结构和无线通信基站

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103083C1 (en) * 1991-02-01 1992-05-27 H.D. Eichelberg & Co Gmbh, 5750 Menden, De Steel pipe branch for IC engine exhaust - is formed by integral, hydrostatically shaped component with inner, longitudinal flanges
WO1995031635A1 (fr) * 1994-05-11 1995-11-23 Zeuna-Stärker GmbH & Co. KG Jonction de tuyaux et son dispositif de fabrication
DE19518252A1 (de) * 1995-05-18 1996-11-21 Schaefer Maschbau Wilhelm Verfahren und Vorrichtung zum Herstellen eines metallenen Hohlkörpers nach dem Innenhochdruck-Umformverfahren
EP0824047A1 (fr) * 1996-08-14 1998-02-18 HUBER & BAUER GmbH Procédé et dispositif pour réaliser sur une pièce une dépression aux bords sensiblement vifs lors du formage par pression interne

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US2833330A (en) * 1954-05-17 1958-05-06 Kac Ltd Fluid pressure mechanism for spirally corrugating tubing
US3921280A (en) * 1970-04-30 1975-11-25 King John O Jun Method of forming an insert in a workpiece for receiving a threaded fastener
US3820369A (en) * 1973-02-26 1974-06-28 H Tominaga Hydraulic press
SU837441A1 (ru) * 1979-06-18 1981-06-15 Ленинградский Ордена Ленина Поли-Технический Институт Им.M.И.Калинина Способ гидравлической штамповкипОлыХ дЕТАлЕй C ОТВОдАМи
JPS57165134A (en) * 1981-04-03 1982-10-12 Hitachi Ltd Hydraulic bulge working device
CA1148795A (fr) * 1981-09-09 1983-06-28 Cyril J. Astil Methode de production d'un soufflet metallique ondule a paroi multicouche
JPS60133933A (ja) * 1983-12-21 1985-07-17 Honda Motor Co Ltd プレス成形法
US5022135A (en) * 1987-12-07 1991-06-11 Brazeway, Inc. Method of manufacturing a fluid conduit having exterior detail
US5890387A (en) * 1989-08-24 1999-04-06 Aquaform Inc. Apparatus and method for forming and hydropiercing a tubular frame member
US5275325A (en) * 1992-12-10 1994-01-04 Grumman Aerospace Corporation Pressurization system inlet assembly for superplastic forming and diffusion bonding
DE4320236C1 (de) * 1993-06-18 1994-03-31 Schaefer Maschbau Wilhelm Vorrichtung zum Herstellen von Hohlkörpern durch Umformen eines Rohres nach dem Innenhochdruckverfahren
JP3509217B2 (ja) * 1994-09-20 2004-03-22 株式会社日立製作所 異形断面管の成形方法並びに成形装置
DE19508632C2 (de) * 1995-03-10 2002-09-19 Audi Ag Verfahren zum Verbinden eines ersten Bauteiles mit einem zweiten Bauteil
DE19530055B4 (de) * 1995-08-16 2004-08-26 Schuler Hydroforming Gmbh & Co. Kg Verfahren zum Herstellen von doppelwandigen Durchbrechungen in Bauteilen nach dem Innenhochdruck-Umformverfahren
WO1998008633A1 (fr) * 1996-08-26 1998-03-05 Cosma International Inc. Ensemble de matrice d'hydroformage et methode servant a realiser un formage de tubes aux galets sans retrecissement
DE19644999C1 (de) * 1996-10-30 1998-08-13 Schulz Gmbh Wilhelm Verfahren zur Herstellung innenplattierter Metallrohre
US5740951A (en) * 1997-04-03 1998-04-21 Jack; Jeanette Insulated belt attached beverage can holder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103083C1 (en) * 1991-02-01 1992-05-27 H.D. Eichelberg & Co Gmbh, 5750 Menden, De Steel pipe branch for IC engine exhaust - is formed by integral, hydrostatically shaped component with inner, longitudinal flanges
WO1995031635A1 (fr) * 1994-05-11 1995-11-23 Zeuna-Stärker GmbH & Co. KG Jonction de tuyaux et son dispositif de fabrication
DE19518252A1 (de) * 1995-05-18 1996-11-21 Schaefer Maschbau Wilhelm Verfahren und Vorrichtung zum Herstellen eines metallenen Hohlkörpers nach dem Innenhochdruck-Umformverfahren
EP0824047A1 (fr) * 1996-08-14 1998-02-18 HUBER & BAUER GmbH Procédé et dispositif pour réaliser sur une pièce une dépression aux bords sensiblement vifs lors du formage par pression interne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321201A2 (fr) * 2001-12-19 2003-06-25 Bayerische Motoren Werke Aktiengesellschaft Méthode de fabrication par hydroformage
EP1321201A3 (fr) * 2001-12-19 2003-08-13 Bayerische Motoren Werke Aktiengesellschaft Méthode de fabrication par hydroformage
CN109482718A (zh) * 2018-09-21 2019-03-19 北京长城华冠汽车科技股份有限公司 开孔方法
CN109482718B (zh) * 2018-09-21 2021-01-26 北京长城华冠汽车科技股份有限公司 开孔方法

Also Published As

Publication number Publication date
US7024769B2 (en) 2006-04-11
US20030189272A1 (en) 2003-10-09
US6581263B1 (en) 2003-06-24
ES2183263T3 (es) 2003-03-16
DE59805587D1 (de) 2002-10-24
EP0895819B1 (fr) 2002-09-18
DE19733476A1 (de) 1999-02-18
DE19733476C2 (de) 1999-08-19

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