EP0077700B1 - Procédé de déformation locale d'un tube rond en un tube comportant des faces planes, et poinçon de formage pour sa mise en oeuvre - Google Patents

Procédé de déformation locale d'un tube rond en un tube comportant des faces planes, et poinçon de formage pour sa mise en oeuvre Download PDF

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Publication number
EP0077700B1
EP0077700B1 EP82401761A EP82401761A EP0077700B1 EP 0077700 B1 EP0077700 B1 EP 0077700B1 EP 82401761 A EP82401761 A EP 82401761A EP 82401761 A EP82401761 A EP 82401761A EP 0077700 B1 EP0077700 B1 EP 0077700B1
Authority
EP
European Patent Office
Prior art keywords
tube
punch
die
compression member
deformed
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
Application number
EP82401761A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0077700A1 (fr
Inventor
Alain Herbulot
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.)
Peugeot Cycles SA
Original Assignee
Peugeot Cycles 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
Application filed by Peugeot Cycles SA filed Critical Peugeot Cycles SA
Publication of EP0077700A1 publication Critical patent/EP0077700A1/fr
Application granted granted Critical
Publication of EP0077700B1 publication Critical patent/EP0077700B1/fr
Expired 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
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally

Definitions

  • Tubes used in industry generally have a circular section because of the ease of their continuous production, from strip rolls, on a tube machine and also because of their mechanical qualities.
  • this circular shape poses problems when one wants to perform certain operations such as drilling a tube, welding it with other parts, docking it with other tubes, and in particular assembling several similar tubes of so as to allow them to lead into another tube of larger section.
  • the object of the present invention is to remedy these drawbacks by making it possible to form local flat surfaces on the tube.
  • the subject of this invention is, in a first aspect, a method of local deformation of a round tube into a tube comprising in the deformed zone two flat faces which consists in axially introducing into the tube an elongated punch comprising a dihedron between two guide faces, placing the portion of tube to be deformed, containing the punch, opposite the side walls of a V-groove formed either by a die, or by the punches of two adjacent tubes to be deformed simultaneously, then to be applied to the external free surface of the tube a compression part, also provided with a groove, and tightening it until it comes into contact with the die respectively the two punches and until the penetration of the tube and the punch in the bottom of the V-groove, so that the tube portion follows the contour of the cavity delimited by the V-groove and that of the compression part this, a charity having a triangular section; finally we move aside the compression part and the matrix and we withdraw the punch from the tube.
  • the tube thus produced has, over a portion of its length only, a substantially triangular section, but only its shape has been modified so that its mechanical qualities have not been altered but that on the other hand its adaptation to be fixed or docked at other parts is significantly improved.
  • the invention also extends to a forming tool or punch, intended for the implementation of this method, which comprises a dihedral with a determined angle between two narrow guide and centering faces, the edges of the dihedron and of the ends of the two lateral faces being generators of the same cylinder.
  • the tool comprises, opposite the edge of the dihedron, a curved surface whose axis coincides with this edge.
  • the cylinder on which the edges of the tool are placed having a diameter very slightly smaller than that of the tube to be deformed, the tool can easily be inserted inside this tube to the desired point, and even removed from it. tube after its deformation. It is also always perfectly centered in the tube and can easily be centered in relation to the matrix.
  • Figs. 1 and 2 illustrate a particularly interesting application of the invention. They indeed show three tubes of circular section, 1, 2 and 3, which are arranged parallel side by side in the extension of a tube 4 of larger diameter. Each of the tubes 1, 2 and 3 is deformed at its end close to the tube 4 so as to have two flat faces, respectively 6, 7, 8, 9, and 10, 11, capable of being approached each against the corresponding face of one of the other two tubes.
  • the two flat faces 6, 7 are joined by a curved surface in a portion of a circle 12, the diameter of which is greater than that of the initial tube 1, 2 or 3, each of the surfaces 12 forming a third of a circle, so that the assembly of the three deformed tubes 1, 2 and 3 is delimited externally by a circumference constituted by the succession of the three surfaces 12, as shown more clearly in FIG. 2.
  • the outside diameter of the assembly of the three deformed tubes is equal to, or preferably slightly less than, the internal diameter of the tube 4, so that the three tubes 1, 2 and 3 can easily be connected to this tube 4 and lead to the inside.
  • the deformation is obtained by means of a forming tool, or punch, such as that shown in FIG. 6.
  • This punch 18 is formed from a solid metal bar, of circular section having a radius close to or very slightly less than the internal radius of the tube to be deformed, for example the tube 1 of FIG. 4.
  • This punch 18 has two flat faces, respectively 20 and 22, intersecting on an edge 23 and thus forming a dihedral whose angle corresponds to that which one wants to obtain on the tube 1.
  • Each of the flat faces 20 and 22 joins a cylinder portion 24, 26 respectively of the initial bar and the edge 23 of the dihedral formed by the faces 20 and 22 is practically on a generatrix of the cylinder of the external surface of this bar. Consequently, the edges 27, 28 and 29, 30 of the lateral faces 24 and 26, and the edge 23 of the dihedral constitute the generatrices of the same cylinder.
  • the lateral faces 24 and 26 are connected by a surface 32, also curved, but having its axis coincident with the edge 23.
  • the punch 18 can receive any desired length but its cross section remains inscribed in a circle of diameter at most equal to the internal diameter of the tube. This punch 18 can thus easily be introduced into the end of a tube which must be deformed, for example at the left end of the tubes shown in FIG. 1.
  • the lateral faces 24 and 26 then play the role of guiding and centering members.
  • a compression part 38 also comprising a groove 40, is then lowered on the tube 1, then clamped on this tube which it presses into the groove 34 until it itself comes to bear against the matrix 36.
  • the bottom of the groove 40 pushes the upper part of the tube 1 against the curved surface 32 of the punch 18, then pushes this punch itself into the groove 34 by deforming the lower part of the tube 1 , which is applied against the two flat faces 20 and 22 of the punch 18.
  • the groove 40 closes the groove 34 and delimits with it a cavity whose cross section has substantially the shape of a triangle.
  • the groove 40 has a curved shape, its radius of curvature being very close to that of the upper cylindrical surface 32 of the punch, so that the tube 1 deformed by compression takes, as shown fig. 5, also a cross section in the shape of a triangle having a curved rib.
  • the tube 1 practically follows the shape of the cavity delimited by the grooves 40 and 34 and, moreover, is supported on the punch 18.
  • the punch 18 is connected, by a transition portion 41, to a manipulation handle 42.
  • the active part of the forming tool or punch 18 can be relatively short, as shown in FIG. 6, or have a very much greater length and thus allow the deformation of a part of the tube relatively distant from its open end.
  • a punch 18 of great length can be introduced into a tube 44, of circular section, and reach a central part 46.
  • the portion of tube 46 containing the punch 18 is then placed in the die 36 and compressed by the part 38, as described for the tube 1.
  • the axial length of these two members that is to say of the matrix and of the compression part 38, as well as that of the grooves 34 and 40 which are open at their two ends, correspond to the length of the portion of tube which it is desired to deform. Therefore, in the embodiment of FIG. 7, the length of the grooves 34 and 40 used corresponds to the length of the tube portion 46. Thus only this part is deformed, the rest of the tube 44 retaining its circular section.
  • the angle of the dihedral formed by the flat faces 20 and 22 of the portion 46 can vary and be chosen as a function of the particular application for which the tube 44 is intended.
  • a punch 18 is then introduced into each tube of tubes 1, 2, 3 for example, then these tubes are pressed against each other by compression pieces in the portion of a cylinder which bring them together so that they deform at their reciprocal contact. Each abuts in the V-groove formed by the punches of two adjacent tubes and follows the shape of the punch it contains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Tubes (AREA)
  • Forging (AREA)
EP82401761A 1981-10-09 1982-09-28 Procédé de déformation locale d'un tube rond en un tube comportant des faces planes, et poinçon de formage pour sa mise en oeuvre Expired EP0077700B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119036 1981-10-09
FR8119036A FR2514270A1 (fr) 1981-10-09 1981-10-09 Procede de deformation locale d'un tube rond en un tube comportant des faces planes, et poincon de formage pour sa mise en oeuvre

Publications (2)

Publication Number Publication Date
EP0077700A1 EP0077700A1 (fr) 1983-04-27
EP0077700B1 true EP0077700B1 (fr) 1985-05-29

Family

ID=9262891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401761A Expired EP0077700B1 (fr) 1981-10-09 1982-09-28 Procédé de déformation locale d'un tube rond en un tube comportant des faces planes, et poinçon de formage pour sa mise en oeuvre

Country Status (6)

Country Link
US (1) US4513601A (es)
EP (1) EP0077700B1 (es)
JP (1) JPS5870917A (es)
DE (1) DE3263910D1 (es)
ES (1) ES515961A0 (es)
FR (1) FR2514270A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299422A (zh) * 2020-02-27 2020-06-19 武汉理工大学 一种风机进风口的压型模及制作成型方法

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4569256A (en) * 1984-09-11 1986-02-11 Edward Pepper Method of making a seamless punch
JPH08155575A (ja) * 1994-11-30 1996-06-18 Showa:Kk ラック軸の製造方法
DE19717822C2 (de) * 1997-04-26 2001-02-08 Gretsch Unitas Gmbh Verfahren zur Herstellung eines Teleskoprohres einer Teleskopbremse
US5855137A (en) * 1997-10-01 1999-01-05 General Motors Corporation Method of manufacturing a reservoir tube
US6889713B2 (en) * 2001-03-16 2005-05-10 John A. Navis Peritoneal dialysis catheter
US6659134B2 (en) * 2001-03-16 2003-12-09 John Navis Peritoneal dialysis catheter
BE1014254A3 (fr) * 2001-06-20 2003-07-01 Sonaca Sa Structure tubulaire mince cloisonnee et son procede de fabrication.
US6918839B2 (en) * 2002-01-28 2005-07-19 The Boeing Company Damage tolerant shaft
US20040250404A1 (en) * 2003-01-14 2004-12-16 Cripsey Timothy J. Process for press forming metal tubes
DE10316757A1 (de) * 2003-04-10 2004-10-28 Behr Gmbh & Co. Kg Anschluß für einen Wärmetauscher, insbesondere für ein Kraftfahrzeug
JP2007501714A (ja) * 2003-05-08 2007-02-01 ノーブル、メタル、プロセシング、インコーポレイテッド 金属製管のプレス成形方法
US20060096099A1 (en) * 2003-05-08 2006-05-11 Noble Metal Processing, Inc. Automotive crush tip and method of manufacturing
KR100643141B1 (ko) * 2005-09-23 2006-11-10 우신공업 주식회사 파이프형 다기관의 집합부 성형장치
JP4687890B2 (ja) * 2005-10-28 2011-05-25 トヨタ自動車株式会社 金属曲げ管の矯正方法および矯正用プレス金型
JP4622962B2 (ja) * 2005-11-30 2011-02-02 株式会社デンソー インタークーラの出入口配管構造
US20130305689A1 (en) * 2012-05-18 2013-11-21 Louis A. Belanger Method and device for exhaust gas management
CN106482568B (zh) * 2015-08-25 2019-03-12 丹佛斯微通道换热器（嘉兴）有限公司 用于换热器的换热管、换热器及其装配方法
US10782071B2 (en) * 2017-03-28 2020-09-22 General Electric Company Tubular array heat exchanger

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DE3835C (de) * 5. FOX, Maschinenbauer, in Leetls Forge, Leeds, England Dampfkessel-Röhren mit Wellen nebst zur Herstellung derselben angewendeten Maschinen und Vorrichtungen
DE69305C (de) * L. SlLVER-MAN in Bexley, Grafschaft Kent, Bellevue, Knoll Road, England Verfahren zur Herstellung von mit Längsrippen versehenen Röhren
US1983584A (en) * 1930-03-29 1934-12-11 Urschel Engineering Company Process of shaping metal tubes
US2205893A (en) * 1937-09-03 1940-06-25 Gen Electric Method of corrugating a heatradiating tube
GB575921A (en) * 1944-08-28 1946-03-11 Clarence Lennon Dewey Machine and method for indenting tubing
US3384946A (en) * 1965-04-27 1968-05-28 Reynolds Metals Co Method of making integrally finned metal tubing
US3476869A (en) * 1967-11-21 1969-11-04 Benjamin K Hawkins Conduit system
US3719985A (en) * 1971-08-13 1973-03-13 Steel Parts Corp Method of making bushings
FR2417709A1 (fr) * 1978-02-21 1979-09-14 Coflexip Tube composite flexible
US4296343A (en) * 1979-10-05 1981-10-20 Ambac Industries, Incorporated Electric motor housing, or the like, with integral pole and methods for making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299422A (zh) * 2020-02-27 2020-06-19 武汉理工大学 一种风机进风口的压型模及制作成型方法
CN111299422B (zh) * 2020-02-27 2021-09-17 武汉理工大学 一种风机进风口的压型模及制作成型方法

Also Published As

Publication number Publication date
ES8402184A1 (es) 1984-02-16
ES515961A0 (es) 1984-02-16
DE3263910D1 (en) 1985-07-04
EP0077700A1 (fr) 1983-04-27
FR2514270A1 (fr) 1983-04-15
JPS5870917A (ja) 1983-04-27
US4513601A (en) 1985-04-30
FR2514270B1 (es) 1985-04-26

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