EP0446089A1 - Verfahren und Vorrichtung zum Formen einer kreisförmigen Lippe um eine Öffnung - Google Patents

Verfahren und Vorrichtung zum Formen einer kreisförmigen Lippe um eine Öffnung Download PDF

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Publication number
EP0446089A1
EP0446089A1 EP91400409A EP91400409A EP0446089A1 EP 0446089 A1 EP0446089 A1 EP 0446089A1 EP 91400409 A EP91400409 A EP 91400409A EP 91400409 A EP91400409 A EP 91400409A EP 0446089 A1 EP0446089 A1 EP 0446089A1
Authority
EP
European Patent Office
Prior art keywords
axis
roller
opening
lip
around
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
EP91400409A
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English (en)
French (fr)
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EP0446089B1 (de
Inventor
Yves Fournier
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.)
Areva NP SAS
Original Assignee
Framatome SA
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Filing date
Publication date
Application filed by Framatome SA filed Critical Framatome SA
Publication of EP0446089A1 publication Critical patent/EP0446089A1/de
Application granted granted Critical
Publication of EP0446089B1 publication Critical patent/EP0446089B1/de
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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall

Definitions

  • the present invention relates to a method for forming a circular lip around an opening in a wall, in particular a ferrule, of great thickness, the thickness of the lip being relatively small compared to that of the wall, of the type in which a counterbore is machined around the opening, on the side opposite to the lip to be produced, then the metal forming the bottom of the latter is pushed axially against a die, on the side opposite the counterbore.
  • the object of the invention is to allow, according to an efficient and economical process, the production of lips that are relatively thin compared to the wall of the shell, the thickness of these lips being typically less than or equal to half the thickness of the wall, maintaining a geometry of the bore close to the cylinder, which allows to keep the most large possible the metal section available in the shell for the reinforcement of the opening.
  • the invention relates to a method of the aforementioned type, characterized in that the pushing operation is carried out by means of at least one roller mounted to rotate on an axis and driven in orbital motion around the axis of the opening, the angle that the leading surface of the roller forms with this axis being progressively reduced during at least part of the advance of the roller.
  • said angle reduction is obtained by reducing the angle that the axis of the roller forms with that of the opening, and / or by virtue of a convex profile of the roller.
  • the roller may in particular have a barrel profile or, alternatively, a conical profile.
  • the installation may further comprise rollers for supporting the ferrule with its vertical axis, these rollers being distributed over a circumference and oriented radially with respect to that -this.
  • the handling of the shell between a preheating / heating position and a machining position can then be done quickly and easily, by simply rotating the ferrule, without the intervention of an overhead crane.
  • Fig. 1 represents the meridian half-section of a cylindrical shell 1 of vertical axis XX, comprising at least one lateral circular opening 2, of axis YY perpendicular to the axis XX.
  • This opening is delimited by a substantially frustoconical inner surface, slightly converging towards the outside of the shell.
  • This ferrule, very thick a can in particular be part of the tank of a nuclear reactor.
  • the machining of the lip 3 has three phases illustrated in Figs. 2A to 2C respectively: cutting of a circular wafer of diameter b (Fig. 2A), machining on the interior side, around the periphery of the orifice thus obtained, of a counterbore 4 whose depth c is substantially equal to a / 2 (Fig. 2B); and extrusion by pushing back the lip 3 (Fig. 2C).
  • the lip 3 protrudes axially, along the axis YY, by a distance d relative to the external cylindrical wall of the shell. At its extremity, it has a radial thickness e and defines an entry opening of diameter f .
  • a 300 mm
  • c 150 mm
  • d 100 to 120 mm
  • e 100 mm
  • f 700 mm
  • the installation used for this operation comprises a ferrule support 5, a support block 6, a burnishing machine 7 and a heater 8.
  • the support 5 consists of a base 9 in which are mounted four rollers 10 of cylindrical shape regularly distributed over a circle C whose diameter corresponds to that of the ferrule and which are oriented radially.
  • the upper generatrix of the rollers 10 slightly exceeds the level of the base 9.
  • the block 6 is fixed on the base 9 outside the circle C, between two rollers 10. It has a cylindrical recess 11 coaxial with the circle C (Fig. 4), receiving a sector of the shell 1 when the latter is placed on the rollers 10. In this recess is formed a cylindrical cavity 12 (Fig. 3) whose axis coincides with the axis YY during the pushing operation described below.
  • the entrance to this cavity 12 is bordered by a circular support matrix 13, the profile of which corresponds to the external profile of the lip 3 to be produced.
  • the burnishing machine 7 is entirely disposed inside the circle C. It comprises a frame 14 itself comprising two vertical uprights 15 in a circular opening of which is mounted, slidingly and rotationally, a cylindrical jack body 16 of which the axis ZZ coincides with that of the cavity 12.
  • a first electric motor 17 carried by the frame can rotate, via a gear 18, a thrust screw 19 parallel to the axis XX, quid by the frame 14.
  • This screw acts by means of an end pad 20 on a vertical plate 21, perpendicular to the axis ZZ and guided in translation parallel to this axis, which is freely traversed by the cylinder 16.
  • the system screw-nut can be replaced by a hydraulic or pneumatic double-acting cylinder.
  • the plate 21 constitutes a support for a second electric motor 22 and bears outwards, that is to say towards the block 6, against a flange 23 secured to the cylinder 16, this by means of a bearing with balls 24.
  • the motor 22 comprises an output pinion 25, which meshes with a pinion 26 integral with the cylinder 16.
  • other motor-17-gear 18-screw 19 assemblies can be provided and regularly distributed around the ZZ axis.
  • the cylinder 16 forms a double-acting hydraulic or pneumatic cylinder body in which a piston 27 moves.
  • This body is extended towards the outside by a cylindrical roller carrier 28 consisting of three longitudinal members 29 parallel to the axis ZZ (Fig. 5) and connected at their outer end by a ring 30 (Fig. 3 and 4).
  • Three rollers 31 with a barrel profile are interposed between the longitudinal members 29 (Fig. 5), projecting radially with respect thereto.
  • the axis 12 of each roller converges towards the outside, is located in a plane passing through the axis ZZ and is articulated by its outer end to the crown 30 and by its inner end to the outer end of a respective link 33 which converges inward.
  • Each link 33 is articulated at its inner end on a sliding plate 34 fixed to the end of the piston rod 27.
  • the heater 8 (Fig. 4) is movable and comprises an inner convex part 36 and an outer concave part 37. It can be electric or with gas burners.
  • the device 8 is brought opposite one of the two openings, preheats the latter to approximately 500 ° C., then heats it to the extrusion temperature of the lip 3, between 950 and 1200 ° C.
  • the device 8 is then moved away, and the ferrule is rotated about its axis on the rollers 10 until the axis YY of the opening 2 thus heated coincides with the axis ZZ of the matrix 13 and of the cylinder 16.
  • a first forming-extrusion pass of the lip is then carried out by exerting a thrust, of the order of 100 to 1,000 tonnes, along the axis ZZ, by means of the motor 17, and by simultaneously rotating the cylinder 16 and the roller carrier 28 around their axis by means of the motor 22.
  • this angle of attack is a function of both the angle of inclination x and the angle made with the axis 32 the tangent to the outer surface of the roller at the point of attack, this angle also varying during the advance of the roller carrier taking into account the barrel shape of the rollers.
  • This process makes it possible to obtain the lip 3 while ensuring the continuity of the fibers of the metal of the ferrule.
  • the central heterogeneous zones of the thickness of the shell do not lead to the bore, which is favorable for the mechanical behavior of the assembly.
  • the connection by welding of pipes to the shell is made on the lips 3, which is advantageous from the point of view of the stresses undergone by the shell.
  • the apparatus 8 can be put in place opposite another opening 2 to be machined, as shown in FIG. 4, which reduces the total manufacturing time of the shell.
  • rollers 31 can be replaced by rollers having a different shape, in particular a frustoconical shape converging towards the outside.
  • the angle of attack of the rollers on the lip in formation depends only on the inclination x of the axes of the rollers.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)
  • Processing Of Meat And Fish (AREA)
  • Crushing And Grinding (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Drilling And Boring (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
EP91400409A 1990-03-06 1991-02-15 Verfahren und Vorrichtung zum Formen einer kreisförmigen Lippe um eine Öffnung Expired - Lifetime EP0446089B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002817A FR2659481A1 (fr) 1990-03-06 1990-03-06 Procede et installation de formage d'une levre circulaire autour d'une ouverture.
FR9002817 1990-03-06

Publications (2)

Publication Number Publication Date
EP0446089A1 true EP0446089A1 (de) 1991-09-11
EP0446089B1 EP0446089B1 (de) 1994-05-18

Family

ID=9394426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400409A Expired - Lifetime EP0446089B1 (de) 1990-03-06 1991-02-15 Verfahren und Vorrichtung zum Formen einer kreisförmigen Lippe um eine Öffnung

Country Status (10)

Country Link
US (1) US5129249A (de)
EP (1) EP0446089B1 (de)
JP (1) JP2806644B2 (de)
KR (1) KR100220308B1 (de)
AT (1) ATE105745T1 (de)
CZ (1) CZ285565B6 (de)
DE (1) DE69101994T2 (de)
FR (1) FR2659481A1 (de)
RU (1) RU2004368C1 (de)
SK (1) SK280029B6 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752289A2 (de) * 1995-06-05 1997-01-08 Enami Seiki Mfg. Co., Ltd. Werkzeug zum Formen eines Abzweigrohres und Verfahren zur Herstellung einer Abzweigrohrleitung an einem metallischen Rohr
GB2322819A (en) * 1997-03-03 1998-09-09 Usui Kokusai Sangyo Kk Method for improving fatigue strength in branch hole part
US6000263A (en) * 1995-06-05 1999-12-14 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
CN101804560A (zh) * 2010-03-17 2010-08-18 烟台台海玛努尔核电设备有限公司 安全注射箱接管嘴的加工方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599472A (en) * 1991-04-05 1997-02-04 The Boeing Company Resealable retort for induction processing of organic matrix composites or metals
US7610786B2 (en) * 2004-12-21 2009-11-03 Nissan Motor Co., Ltd. Apparatus for forming microscopic recesses on a cylindrical bore surface and method of forming the microscopic recesses on the cylindrical bore surface by using the apparatus
DE102018112845A1 (de) * 2018-05-29 2019-12-05 ATG Automations-Technik Gröditz GmbH & Co. KG Erzeugung eines Abgangs an einem Hohlkörper

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1198440A (fr) * 1958-02-18 1959-12-07 Babcock & Wilcox France Perfectionnements aux enceintes sous pression et procédé de fabrication de tubulures sur de telles enceintes
US3151657A (en) * 1961-03-22 1964-10-06 United Sheet Metal Co Inc Sheet metal forming machines
FR1572835A (de) * 1968-06-25 1969-06-27
FR2337600A1 (fr) * 1976-01-09 1977-08-05 Creusot Loire Procede et installation de fabrication d'une tubulure d'attente sur une paroi de tres forte epaisseur
DE2814176A1 (de) * 1977-04-04 1978-10-05 Verrina Spa Maschine zum aeusseren aushalsen von mantelbohrungen in hohlzylindrischen, insbesondere dickwandigen metallwerkstuecken
EP0002163A1 (de) * 1977-11-18 1979-05-30 Unicum S.A. Kombiniertes und umkehrbares Werkzeug mit Werkzeugträger, zum Bilden von Aushalsungen auf Rohren oder V-Platten
US4246772A (en) * 1978-07-19 1981-01-27 Moshnin Evgeny N Pressing branch pipe on thick-walled shell-device for realization thereof
SU1479158A1 (ru) * 1987-07-06 1989-05-15 Предприятие П/Я В-2739 Устройство дл развальцовки отверсти трубы

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US18452A (en) * 1857-10-20 Improved machine for bending flanges on boiler-heads
US157810A (en) * 1874-12-15 Improvement in flanging-machines
US743644A (en) * 1903-02-27 1903-11-10 Thomas Richard Johnson Flanging-machine.
US1011000A (en) * 1910-02-19 1911-12-05 John S Worth Process for dishing plates.
US1753963A (en) * 1926-11-27 1930-04-08 Ferdinand Braun Method of and apparatus for flanging containers
JPS58224024A (ja) * 1982-06-22 1983-12-26 Kotobuki Tekkosho:Kk 多管式熱交換器用管板の溶接フランジ部の形成方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1198440A (fr) * 1958-02-18 1959-12-07 Babcock & Wilcox France Perfectionnements aux enceintes sous pression et procédé de fabrication de tubulures sur de telles enceintes
US3151657A (en) * 1961-03-22 1964-10-06 United Sheet Metal Co Inc Sheet metal forming machines
FR1572835A (de) * 1968-06-25 1969-06-27
FR2337600A1 (fr) * 1976-01-09 1977-08-05 Creusot Loire Procede et installation de fabrication d'une tubulure d'attente sur une paroi de tres forte epaisseur
DE2814176A1 (de) * 1977-04-04 1978-10-05 Verrina Spa Maschine zum aeusseren aushalsen von mantelbohrungen in hohlzylindrischen, insbesondere dickwandigen metallwerkstuecken
EP0002163A1 (de) * 1977-11-18 1979-05-30 Unicum S.A. Kombiniertes und umkehrbares Werkzeug mit Werkzeugträger, zum Bilden von Aushalsungen auf Rohren oder V-Platten
US4246772A (en) * 1978-07-19 1981-01-27 Moshnin Evgeny N Pressing branch pipe on thick-walled shell-device for realization thereof
SU1479158A1 (ru) * 1987-07-06 1989-05-15 Предприятие П/Я В-2739 Устройство дл развальцовки отверсти трубы

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0752289A2 (de) * 1995-06-05 1997-01-08 Enami Seiki Mfg. Co., Ltd. Werkzeug zum Formen eines Abzweigrohres und Verfahren zur Herstellung einer Abzweigrohrleitung an einem metallischen Rohr
EP0752289A3 (de) * 1995-06-05 1997-11-26 Enami Seiki Mfg. Co., Ltd. Werkzeug zum Formen eines Abzweigrohres und Verfahren zur Herstellung einer Abzweigrohrleitung an einem metallischen Rohr
US5943773A (en) * 1995-06-05 1999-08-31 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
US6000263A (en) * 1995-06-05 1999-12-14 Enami Seiki Mfg. Co., Ltd. Branch pipe forming tool and method of forming branch pipe on metal tube with the tool
GB2322819A (en) * 1997-03-03 1998-09-09 Usui Kokusai Sangyo Kk Method for improving fatigue strength in branch hole part
GB2322819B (en) * 1997-03-03 2000-12-13 Usui Kokusi Sangyo Kaisha Ltd Method for improving fatique strength due to repeated pressure at branch hole part in member for high pressure fluid.
AU739875B2 (en) * 1997-03-03 2001-10-25 Usui Kokusai Sangyo Kabushiki Kaisha Method for improving fatigue strength due to repeated pressure at branch hole part in member for high pressure fluid, branch hole part or member for high pressure fluid formed by the method, and member for high pressure fluid with built-in slider having the branch hole
CN101804560A (zh) * 2010-03-17 2010-08-18 烟台台海玛努尔核电设备有限公司 安全注射箱接管嘴的加工方法
CN101804560B (zh) * 2010-03-17 2012-05-09 烟台台海玛努尔核电设备股份有限公司 安全注射箱接管嘴的加工方法

Also Published As

Publication number Publication date
JPH04224026A (ja) 1992-08-13
SK280029B6 (sk) 1999-07-12
DE69101994T2 (de) 1994-11-03
FR2659481B1 (de) 1994-04-22
FR2659481A1 (fr) 1991-09-13
ATE105745T1 (de) 1994-06-15
JP2806644B2 (ja) 1998-09-30
CZ285565B6 (cs) 1999-09-15
DE69101994D1 (de) 1994-06-23
KR100220308B1 (ko) 1999-09-15
US5129249A (en) 1992-07-14
EP0446089B1 (de) 1994-05-18
RU2004368C1 (ru) 1993-12-15
CS9100583A3 (en) 1991-10-15

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