EP0533574A1 - Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand - Google Patents

Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand Download PDF

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Publication number
EP0533574A1
EP0533574A1 EP92402555A EP92402555A EP0533574A1 EP 0533574 A1 EP0533574 A1 EP 0533574A1 EP 92402555 A EP92402555 A EP 92402555A EP 92402555 A EP92402555 A EP 92402555A EP 0533574 A1 EP0533574 A1 EP 0533574A1
Authority
EP
European Patent Office
Prior art keywords
tubular wall
opening
punch
cylindrical
cylindrical surface
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
EP92402555A
Other languages
English (en)
French (fr)
Other versions
EP0533574B1 (de
Inventor
Philippe Le Gauyer
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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=9417110&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0533574(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0533574A1 publication Critical patent/EP0533574A1/de
Application granted granted Critical
Publication of EP0533574B1 publication Critical patent/EP0533574B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
    • 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

Definitions

  • the invention relates to the manufacture of tubular walls of fluid exchanger heat exchanger boxes, and in particular those used in condensers of air conditioning systems of motor vehicles. More particularly, the invention relates to the production in a tubular wall of through openings intended to receive the ends of the fluid circulation tubes of the heat exchanger.
  • a known method for making such a through opening uses a punch having a cylindrical outer surface terminated by a cutting edge, the punch being moved in the direction of the generatrices of its cylindrical surface relative to the tubular wall so that the cutting edge comes in contact with it from the outside and passes through its thickness by forming the opening, the peripheral surface of the latter being entirely in contact, at the end of the stroke of the punch, with the cylindrical surface of the latter.
  • This process leads to a through opening, the peripheral surface of which is cylindrical and is connected to the external face of the tubular wall, in its parts furthest from the axial plane of the tubular wall parallel to the generatrices of the cylindrical surface of the punch, according to a acute angle.
  • This acute connection angle defines a cutting edge which, when inserting the end of the tube into the opening, will tear a chip on it if it is not perfectly aligned with the opening, this risk being all the greater the greater the number of tubes to be placed simultaneously.
  • the object of the invention is to remedy this drawback.
  • said cylindrical surface is connected, opposite the cutting edge, on at least part of its perimeter, to a surface portion of the punch inclined towards the outside from cylindrical surface, and, at the end of the working stroke of the punch, the inclined surface portion deforms the tubular wall so as to flare the opening. This flaring of the opening ensures centering of the end of the tube and its easy introduction without deterioration into the opening.
  • the inclined surface portion is in contact with a flared portion of the peripheral surface of the opening adjacent to the external surface of the tubular wall, while the cylindrical surface of the punch , in said part of its perimeter, is in contact with a cylindrical portion of the peripheral surface of the opening adjacent to the internal surface of the tubular wall.
  • the tube is first centered by the outer flared portion of the surface of the opening, then guided with minimal clearance by the inner cylindrical portion of this surface.
  • the invention also relates to a tubular wall for a heat exchanger fluid box as can be obtained by the method defined above, comprising through openings elongated in its circumferential direction and whose peripheral surface has, in the end regions of the openings, a portion flared outward and extending from the external face of the tubular wall over at least a fraction of the thickness thereof.
  • the flared portion extends only over a fraction of the thickness of the wall, it can be connected, in said end regions, to a portion of cylindrical surface extending over the remaining fraction and by consequently adjacent to the internal face of the tubular wall.
  • Figure 1 shows the embodiment of a through opening in the tubular wall 1 of a heat exchanger fluid box by means of a punch 2 having a cylindrical outer surface 3 connecting at one end to a narrowed part 4 defining a cutting edge.
  • the punch is moved relative to the wall 1 in the direction of the arrow F, parallel to the generatrices of the cylindrical surface 3.
  • the edge 4 has essentially passed through the thickness of the wall 1 and formed an opening 5 whose peripheral surface 6, in its region adjacent to the external face 7 of the wall 1, is cylindrical and in contact with the cylindrical external surface 3 of the punch.
  • This cylindrical surface 6 is connected to the face 7, in the regions furthest from the axial plane P of the wall 1 parallel to the arrow F, at an acute angle of small value. If the advance movement of the punch was stopped at this stage, as is the case in the known method, the edge defined by this acute angle would risk damaging the tube which will subsequently be presented to enter the opening, and even prevent its introduction.
  • the cylindrical surface 3 of the punch 2 is connected, opposite the edge 4, to a surface portion 8 inclined outward from the cylindrical surface 3.
  • this inclined surface portion 8 deforms the tubular wall so as to flare the opening, which is elongated in the circumferential direction of the tubular wall, in the vicinity of its two ends.
  • the inclined surface portion 8 is then in contact with flared portions 6a of the peripheral surface of the opening adjacent to the external face 7 of the tubular wall, while the cylindrical surface 3 of the punch is in contact with cylindrical portions 6b of the peripheral surface of the opening, also in the vicinity of the ends of the latter, adjacent to the internal surface 9 of the wall 1.
  • the flared surface portions 6a provide a centering of the end of the tube 12 in the direction perpendicular to the plane P and easy introduction thereof into the opening, the cylindrical surface portions 6b and 6c now precisely maintain the final positioning of the tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP92402555A 1991-09-19 1992-09-17 Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand Revoked EP0533574B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111571A FR2681540B1 (fr) 1991-09-19 1991-09-19 Procede de poinconnage d'une ouverture traversante dans une paroi tubulaire, et paroi tubulaire obtenue.
FR9111571 1991-09-19

Publications (2)

Publication Number Publication Date
EP0533574A1 true EP0533574A1 (de) 1993-03-24
EP0533574B1 EP0533574B1 (de) 1994-12-07

Family

ID=9417110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402555A Revoked EP0533574B1 (de) 1991-09-19 1992-09-17 Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand

Country Status (8)

Country Link
US (1) US5421086A (de)
EP (1) EP0533574B1 (de)
JP (1) JPH06106255A (de)
BR (1) BR9203651A (de)
DE (1) DE69200822T2 (de)
ES (1) ES2068015T3 (de)
FR (1) FR2681540B1 (de)
MX (1) MX9205343A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717110A1 (fr) * 1994-03-08 1995-09-15 Alcan France Outil de poinçonnage pour profilé métallique.
EP0840083A3 (de) * 1996-10-30 1998-10-14 Ford Motor Company Zwischenwand für Wärmetauscher
EP0872294A1 (de) * 1997-04-16 1998-10-21 CESA Compagnie Européenne de Sièges pour Automobiles Stanze zur Herstellung eines Loches in einer Metallplatte
WO2000055561A1 (de) * 1999-03-15 2000-09-21 Behr Gmbh & Co. Sammelrohr für einen wärmeübertrager und herstellungsverfahren hierfür
CZ298876B6 (cs) * 2003-07-04 2008-03-05 Visteon Global Technologies, Inc. Zpusob derování trubek, zejména pro klimatizacní systémy

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339871A (en) * 1998-07-03 2000-02-09 Glynwed Pipe Systems Ltd Punch and coupling
JP4438203B2 (ja) * 2000-09-12 2010-03-24 株式会社デンソー パイプの穴開け方法及び装置
EP1195570B1 (de) * 2000-10-06 2003-08-20 Visteon Global Technologies, Inc. Herstellung eines Rohres für einen Wärmetauscher
DE10103176B4 (de) * 2001-01-22 2010-06-02 Behr Gmbh & Co. Kg Verfahren zum Einbringen von Flachrohreinsteckschlitzen in ein Sammelrohr
US7017461B2 (en) * 2002-11-12 2006-03-28 Ssd Control Technology Inc. Dual position automatic notcher
US20080060199A1 (en) * 2006-07-25 2008-03-13 Christopher Alfred Fuller Method of manufacturing a manifold
JP5633083B1 (ja) * 2013-10-07 2014-12-03 株式会社三和精機 熱交換器用のヘッダー、該ヘッダーを備えた熱交換器および当該ヘッダーの製作方法
US11931790B1 (en) 2020-08-28 2024-03-19 Charles D. Hayes Punching device making large rectangular holes in rectangular tubing and method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829983A (en) * 1956-03-30 1958-04-08 Koppy Tool And Die Company Tube piercing machine
US2972779A (en) * 1954-06-07 1961-02-28 Baxter Don Inc Plastic tubing process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108362A (en) * 1957-10-15 1963-10-29 Huet Andre Method of making tubular heat exchanger
US3158119A (en) * 1961-01-18 1964-11-24 Olin Mathieson Metal working
US5088193A (en) * 1988-09-02 1992-02-18 Sanden Corporation Method for manufacturing a heat exchanger
US5090477A (en) * 1988-10-11 1992-02-25 Brazeway, Inc. Evaporator having integrally baffled tubes
US5172762A (en) * 1989-10-20 1992-12-22 Sanden Corporation Heat exchanger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972779A (en) * 1954-06-07 1961-02-28 Baxter Don Inc Plastic tubing process
US2829983A (en) * 1956-03-30 1958-04-08 Koppy Tool And Die Company Tube piercing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WERKSTATTSTECHNIK, ZEITSCHRIFT FUR INDUSTRIELLE FERTIGUNG vol. 69, no. 12, December 1979, BERLIN pages 777 - 780 K]HLUNG & THEBILLE 'HERSTELLUNG LANGLOCHARTIGER AUSSCHNITTE IN ROHREN' *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717110A1 (fr) * 1994-03-08 1995-09-15 Alcan France Outil de poinçonnage pour profilé métallique.
EP0840083A3 (de) * 1996-10-30 1998-10-14 Ford Motor Company Zwischenwand für Wärmetauscher
EP0872294A1 (de) * 1997-04-16 1998-10-21 CESA Compagnie Européenne de Sièges pour Automobiles Stanze zur Herstellung eines Loches in einer Metallplatte
FR2762242A1 (fr) * 1997-04-16 1998-10-23 Cesa Poincon pour la formation d'un trou dans une paroi metallique
WO2000055561A1 (de) * 1999-03-15 2000-09-21 Behr Gmbh & Co. Sammelrohr für einen wärmeübertrager und herstellungsverfahren hierfür
US6993838B1 (en) 1999-03-15 2006-02-07 Behr Gmbh & Co. Collector tube for a heat transfer unit and method for producing same
CZ298876B6 (cs) * 2003-07-04 2008-03-05 Visteon Global Technologies, Inc. Zpusob derování trubek, zejména pro klimatizacní systémy

Also Published As

Publication number Publication date
JPH06106255A (ja) 1994-04-19
DE69200822T2 (de) 1995-04-13
DE69200822D1 (de) 1995-01-19
FR2681540A1 (fr) 1993-03-26
US5421086A (en) 1995-06-06
BR9203651A (pt) 1993-04-13
MX9205343A (es) 1993-07-01
FR2681540B1 (fr) 1993-12-03
ES2068015T3 (es) 1995-04-01
EP0533574B1 (de) 1994-12-07

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