EP0894951A2 - Procédé et dispositif pour la fabrication d'un raccord d'une sonde lambda dans un tuyau d'échappement - Google Patents

Procédé et dispositif pour la fabrication d'un raccord d'une sonde lambda dans un tuyau d'échappement Download PDF

Info

Publication number
EP0894951A2
EP0894951A2 EP98113617A EP98113617A EP0894951A2 EP 0894951 A2 EP0894951 A2 EP 0894951A2 EP 98113617 A EP98113617 A EP 98113617A EP 98113617 A EP98113617 A EP 98113617A EP 0894951 A2 EP0894951 A2 EP 0894951A2
Authority
EP
European Patent Office
Prior art keywords
exhaust pipe
holder
pipe
high pressure
contour
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Withdrawn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
EP98113617A
Other languages
German (de)
English (en)
Other versions
EP0894951A3 (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
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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of EP0894951A2 publication Critical patent/EP0894951A2/fr
Publication of EP0894951A3 publication Critical patent/EP0894951A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/025—Stamping using rigid devices or tools for tubular articles
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming
    • 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
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y10T29/49375—Tube joint and tube plate structure including conduit expansion or inflation
    • 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
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49389—Header or manifold 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
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49391—Tube making or reforming
    • 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
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5199—Work on tubes
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53113—Heat exchanger
    • Y10T29/53122—Heat exchanger including deforming means

Definitions

  • the invention relates to a method for producing a connection a hollow cylindrical ⁇ probe holder to an exhaust pipe according to the preamble of claim 1 and a device to carry out the method according to the preamble of claim 9.
  • ⁇ probe holders are made in various ways such as known from DE 34 09 045 C1. With all of these designs, the Holder in its shape in a very special way to the curved Shape of the exhaust pipe adapted to a dimensionally accurate connection of the Holder to get the exhaust pipe, which ensures that by a subsequent welding process of the holder the exhaust pipe is a mechanically and thermally resilient connection between the liaison partners.
  • the special one However, adjustment is complex in terms of production technology and therefore expensive.
  • the outer surface has to be attached to the exhaust pipe Almost true to size only on the one hand through highly complicated Contour milling of the outer surface of the holder or by training of the holder as an investment casting on which the system contour at Casting process is designed. Both methods require expensive ones Tools and long process times, also for increased Costs when forming a suitable connection of the holder on Provide exhaust pipe.
  • the invention has for its object a method or to develop a device with which in a simple manner and A dimensionally accurate connection of a ⁇ probe holder to save installation space is achievable on an exhaust pipe.
  • the task is according to the invention by the features of the claim 1 regarding the procedure and the characteristics of claim 9 with respect to the device.
  • the invention is based on the idea of forming the connection to exploit the high pressure technology, by means of the resulting possibility of using exhaust pipes with complicated running curvatures virtually free of manufacturing tolerances to train, exhaust lines or parts thereof have increased lately getting produced.
  • the exhaust pipe is simple by means of high pressure at the point where the future Contact surface of the holder is provided with respect to the contact contour the lateral surface of the holder true to the contour, that is adapted to this shape negative.
  • the connection of the holder with its lateral surface on the exhaust pipe saves installation space, the To a certain extent, the holder at this point is almost in the exhaust pipe is at least sunk into the pipe wall. In economic terms, this is done together with the forming of the pipe blank to the desired finished shape of the exhaust pipe in just one operation.
  • the shaping agent can either permanently installed in a die of the forming tool or be included in an exchange matrix, if necessary be inserted into the base body of the forming tool can.
  • an exhaust line 1 is shown on the one hand an input flange 2, by means of which the strand 1 on a Cylinder head of an internal combustion engine is attached, and on the other hand is attached to an output flange 3 to which to the exhaust pipe the further exhaust pipe, for example immediately Catalyst, connects.
  • the exhaust line 1 is essentially formed from two separate exhaust pipes 4,5, which in Area of the outlet flange 3 open into each other. Upstream this junction is a hollow cylindrical between the tubes 4,5 sleeve-shaped ⁇ probe holder 6 arranged on both Pipes 4,5 with areas of its lateral surface 7 welded flat is.
  • the probe holder 6 is designed as a turned part (Fig. 3) and has a central bore 8 with an internal thread 9, into which the ⁇ probe 10 is screwed.
  • the probe holder 6 has further two cross bores 11, 12, which are the centric At least cut hole 8 and also - depending on the location of the Tubes 4,5 and the probe holder 6 to each other - as a single Through hole can be formed.
  • the cross holes 11, 12 or the through hole serve to connect the sensor the ⁇ probe 10 with a guided in the tubes 4.5 Exhaust gas flow.
  • the pipes 4, 5 are formed and calibrated to the correct internal high pressure. Representing both pipes 4,5 points at the point the system of the probe holder 6, the exhaust pipe 4 a bulge 13 on, the shape negative to the contact contour of the lateral surface 7 of the Probe holder 6 is formed by means of hydroforming.
  • the exhaust pipe 4 has an opening 14 in the arch 13, to which the transverse bore 11 connects and via which the probe 10 can be acted upon with exhaust gas from the exhaust pipe 4.
  • a pipe blank 15 is inserted into an internal high-pressure forming tool 16 inserted into an upper tool 17 and a lower tool 18 is divided.
  • the upper tool 17 and lower tool 18 by providing corresponding recesses in each other facing end faces 19, 20 an engraving 21 is formed in the the blank 15 lies with play.
  • a guide bore 23 which in the Engraving 21 opens out and a stamp 24 is displaceable is led.
  • the one facing the blank 15 can be immersed in the engraving 21
  • the end face 25 of the die 24 is contoured - at least where later the contact surface of the arch 13 for the probe holder 6 is located - according to the system contour the lateral surface 7 of the probe holder 6 is formed.
  • the die 24 is still in one of the Engraving 21 retracted position, the forming tool 16th and the blank 15 in unpressurized with respect to a fluid pressure Condition are.
  • the embossing die 24 is now engraved 21 according to FIG. preferably hydraulically, pushed in, being the blank 15 dented on the application surface. This can be done both without prior filling of the blank 15 with a pressure fluid as well as with filling, possibly producing a moderate one internal high pressure located below a forming pressure. With filling, the risk of kinking the blank 15 at the dent is avoided, but are to be dented high indentation forces required. Without filling there is a risk of kinking, but this can be done by suitable Interpretation of the punch diameter and the tube wall thickness also be avoided. In any case, the dent can done in a simple manner. Remains in this dent position for the time being the embossing stamp 24. If not before executed, the dented blank 15 with a Pressure fluid filled.
  • the stamp 24 remains still in its dent.
  • the die is drilled hollow and takes one in its bore 26 slidably there performed punch 27.
  • the punch 27 has one end-face ring prong 28 with which it is applied of the exhaust pipe 4,5 penetrates into its wall material, wherein the depth of penetration is such that only a narrow one circumferential thin spot 29 remains in the tube wall.
  • the punch 27 is withdrawn, then under high pressure the pipe wall along the thin point 29 clean tears, whereby the opening 14 in the exhaust pipe 4.5 and a slug 30 arises from wall material.
  • the punch 27 withdrawn only to such an extent that the slug 30 opens the opening 14 does not leave.
  • the crack creates in the formed exhaust pipe 4.5 a pressure drop.
  • the punch 27 has a guide bore in the center 31 on, in which a plunger 32 is guided.
  • Tappet 32 is spring-loaded and when punching against the exhaust pipe 4.5 biased. After the pressure drop there is in the exhaust pipe 4.5 only an internal fluid pressure below a forming pressure, a complete pressure release is also provided can be. It is also conceivable to remove the fluid from the exhaust pipe 4.5 to derive. In all the cases mentioned, spring loading is applied applied with the plunger 32 of the perforated slug 30 and pushed into the opening 14 without overhang in a jamming manner. The stamp 24 is used together with the stamp 27 withdrawn, whereby both of the exhaust pipe 4.5 to solve.
  • contact surface also Hollow sections of any kind can be formed, such as in the intake tract of an internal combustion engine or on hollow frame parts of bodies or axle beams or links.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Silencers (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Measuring Fluid Pressure (AREA)
EP98113617A 1997-08-02 1998-07-22 Procédé et dispositif pour la fabrication d'un raccord d'une sonde lambda dans un tuyau d'échappement Withdrawn EP0894951A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19733473A DE19733473C2 (de) 1997-08-02 1997-08-02 Verfahren und Vorrichtung zur Herstellung einer Anbindung eines lambda-Sondenhalters an ein Abgasrohr
DE19733473 1997-08-02

Publications (2)

Publication Number Publication Date
EP0894951A2 true EP0894951A2 (fr) 1999-02-03
EP0894951A3 EP0894951A3 (fr) 2003-01-15

Family

ID=7837803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113617A Withdrawn EP0894951A3 (fr) 1997-08-02 1998-07-22 Procédé et dispositif pour la fabrication d'un raccord d'une sonde lambda dans un tuyau d'échappement

Country Status (3)

Country Link
US (2) US6092285A (fr)
EP (1) EP0894951A3 (fr)
DE (1) DE19733473C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805481A1 (fr) * 2000-02-29 2001-08-31 Aisin Seiki Barre a support
EP1134047A2 (fr) * 2000-03-09 2001-09-19 Toyota Jidosha Kabushiki Kaisha Procédé de fabrication pour forme tubulaire de section irregulière et essieu pour axe de torsion

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10250045A1 (de) * 2002-10-25 2004-05-06 Burger Ag Automation Technology Verfahren und Vorrichtung zum Prägen von Kerben an Hohlrohren
DE10350151B4 (de) * 2003-10-28 2005-10-13 Daimlerchrysler Ag Werkzeug und Innenhochdruck-Umformen eines Hohlprofils sowie Verfahren zum Umformen eines Hohlprofils
DE10350156B3 (de) * 2003-10-28 2004-10-14 Daimlerchrysler Ag Werkzeug und Verfahren zum Schneiden eines Hohlprofils
DE10358493B4 (de) * 2003-12-13 2006-01-05 Daimlerchrysler Ag Vorrichtung zum Innenhochdruckumformen
US20060059683A1 (en) * 2004-07-19 2006-03-23 Catalogna John A Draw-form for exhaust components and method of manufacture
US7127924B1 (en) * 2005-09-09 2006-10-31 Gm Global Technology Operations, Inc. Double action punch assembly for hydroforming die
US7204113B1 (en) * 2006-09-29 2007-04-17 Gm Global Technology Operations, Inc. Punch for hydroforming die
US8844335B2 (en) * 2012-08-20 2014-09-30 Standard Lifters, Inc. Low profile pilot assembly and method for metal forming dies
US11541445B2 (en) 2019-10-07 2023-01-03 Standard Lifters, Inc. Tight space pilot

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409045C1 (de) 1984-03-13 1985-10-17 Daimler Benz Ag Messfuehleranordnung in einem Abgasrohr fuer Verbrennungsmotoren

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1675329A (en) * 1926-06-21 1928-07-03 Superheater Co Ltd Apparatus for joining pipes
US2713195A (en) * 1951-03-15 1955-07-19 Solar Aircraft Co Method of making an engine manifold
US3209575A (en) * 1962-04-30 1965-10-05 Jr Bernard Woodward Apparatus for deforming tubular material
US4051704A (en) * 1975-11-19 1977-10-04 Senkichiro Kimura Method for the manufacture of an ornamental head lug of the single unit type for use in bicycles
IT1174062B (it) * 1984-03-14 1987-07-01 Nuovo Pignone Spa Perfezionamenti nel metodo per la giunzione a tenuta di un manicotto ad una tubazione sottomarina posata a grande prfondita
JPS6167525A (ja) * 1984-09-11 1986-04-07 Nippon Piston Ring Co Ltd カムシヤフト
US4582259A (en) * 1984-09-12 1986-04-15 Hobart Corporation Wash arm and method and apparatus for forming the same
US4798076A (en) * 1988-02-26 1989-01-17 Benteler Industries, Inc. Nipple forming apparatus
US4827590A (en) * 1988-04-08 1989-05-09 Metzger Frederick W Method of making of header for automotive air conditioner evaporator
DE3842590C1 (fr) * 1988-12-17 1990-06-07 Emitec Emissionstechnologie
US4989482A (en) * 1989-11-17 1991-02-05 Ti Corporate Services Limited Method and apparatus for punching a hole in sheet material
DE4212717A1 (de) * 1992-04-16 1993-10-21 Laengerer & Reich Gmbh & Co Wärmeaustauscher
US5349817A (en) * 1993-11-12 1994-09-27 Benteler Industries, Inc. Air gap manifold port flange connection
US5471857A (en) * 1994-03-07 1995-12-05 Mascotech Tubular Products, Inc. Process for hydroforming a vehicle manifold
JP3168841B2 (ja) * 1994-09-22 2001-05-21 日本精工株式会社 衝撃吸収式ステアリングシャフトの製造方法
DE19510602C1 (de) * 1995-03-23 1996-04-11 Daimler Benz Ag Fächerartiger Abgaskrümmer für mehrzylindrige Brennkraftmaschinen
DE19518252C2 (de) * 1995-05-18 1997-05-22 Schaefer Maschbau Wilhelm Verfahren und Vorrichtung zum Herstellen eines metallenen Hosenrohres nach dem Innenhochdruck-Umformverfahren
DE19647962C1 (de) * 1996-11-20 1998-04-16 Daimler Benz Ag Verfahren und Einrichtung zum Herstellen von Löchern am Umfang eines Hohlprofiles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409045C1 (de) 1984-03-13 1985-10-17 Daimler Benz Ag Messfuehleranordnung in einem Abgasrohr fuer Verbrennungsmotoren

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805481A1 (fr) * 2000-02-29 2001-08-31 Aisin Seiki Barre a support
EP1134047A2 (fr) * 2000-03-09 2001-09-19 Toyota Jidosha Kabushiki Kaisha Procédé de fabrication pour forme tubulaire de section irregulière et essieu pour axe de torsion
EP1134047A3 (fr) * 2000-03-09 2003-11-19 Toyota Jidosha Kabushiki Kaisha Procédé de fabrication pour forme tubulaire de section irregulière et essieu pour axe de torsion

Also Published As

Publication number Publication date
EP0894951A3 (fr) 2003-01-15
US6470546B1 (en) 2002-10-29
DE19733473C2 (de) 2000-07-06
US6092285A (en) 2000-07-25
DE19733473A1 (de) 1999-02-04

Similar Documents

Publication Publication Date Title
DE10358502B3 (de) Verfahren und Einrichtung zur Herstellung eines Hohlprofils
EP1986801B1 (fr) PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE
DE19535870C2 (de) Verfahren zum Herstellen von schalenförmigen Hohlstrukturen aus gedoppelten Blechzuschnitten mittels Innenhochdruckumformen
DE19647963C2 (de) Verfahren und Vorrichtung zur Herstellung von Löchern am Umfang von Hohlprofilen
EP0759120B1 (fr) Collecteur d'echappement pour moteur a combustion interne multi-cylindre
EP0894951A2 (fr) Procédé et dispositif pour la fabrication d'un raccord d'une sonde lambda dans un tuyau d'échappement
DE10328452B3 (de) Verfahren und Vorrichtung zur Erzeugung eines Loches am Außenumfang eines Hohlprofiles
DE19719629C2 (de) Verfahren und Einrichtung zur Herstellung von Kraftfahrzeugachsgehäusen
DE19833006B4 (de) Verfahren und Vorrichtung zur Herstellung rohrförmiger gebogener Hohlkörper durch Innenhochdruckumformen
DE102005036419B4 (de) Vorrichtung zur Herstellung ausgebauchter Hohlprofile, insbesondere von Gasgeneratorgehäusen für Airbageinrichtungen
DE10029319C1 (de) Verfahren und Vorrichtung zur Herstellung von Durchführungen an Hohlprofilen
DE19647964C2 (de) Verfahren zur Herstellung von schlitzförmigen Durchbrüchen an Hohlprofilen und eine Vorrichtung zur Durchführung desselben
DE19649629C2 (de) Flexibel einsetzbares Werkzeug zum Hydroumformen eines Bleches
EP0849011A1 (fr) Procédé et installation pour produire des profilés creux avec des extensions de section aux extrémités
DE10065033C1 (de) Verfahren zur Herstellung eines umfänglich geschlossenen Hohlprofiles und eine Vorrichtung zur Durchführung desselben
EP0770435B1 (fr) Méthode de fabrication d'un support d'essieu
EP0895819B1 (fr) Procédé et dispositif pour former un élément de jonction sur un profilé creux
DE19513519A1 (de) Verfahren zum Anbringen von Öffnungen an geschlossenen Profilen und eine Vorrichtung zur Durchführung desselben
DE10042896B4 (de) Verfahren zum Herstellen eines Ringelements
EP0784016A1 (fr) Pièces embouties emboîtables ainsi qu'un procédé et un dispositif pour les réaliser
DE19719628C2 (de) Verfahren und Einrichtung zur Herstellung von ausgebauchten Hohlprofilen
DE4437399C2 (de) Verfahren zum Herstellen von gebauten Nockenwellen und Vorrichtung zur Durchführung des Verfahrens
DE10313812B3 (de) Verfahren und Vorrichtung zur Herstellung einer gebauten Nockenwelle
EP0824047B1 (fr) Procédé et dispositif pour réaliser sur une pièce une dépression aux bords sensiblement vifs lors du formage par pression interne
DE10161999C1 (de) Verfahren und Vorrichtung zur Herstellung eines umfänglich geschlossenen Hohlprofiles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DAIMLERCHRYSLER AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030201