EP0348279A1 - Verfahren zum Endbearbeiten der zwei gegenüberliegenden Kanten eines Werkstückes und Vorrichtung zum Ausführen dieses Verfahrens - Google Patents

Verfahren zum Endbearbeiten der zwei gegenüberliegenden Kanten eines Werkstückes und Vorrichtung zum Ausführen dieses Verfahrens Download PDF

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Publication number
EP0348279A1
EP0348279A1 EP89401694A EP89401694A EP0348279A1 EP 0348279 A1 EP0348279 A1 EP 0348279A1 EP 89401694 A EP89401694 A EP 89401694A EP 89401694 A EP89401694 A EP 89401694A EP 0348279 A1 EP0348279 A1 EP 0348279A1
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EP
European Patent Office
Prior art keywords
edges
tools
pressurized fluid
finishing
working chambers
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
EP89401694A
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English (en)
French (fr)
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EP0348279B1 (de
Inventor
Charles Marcel Simonetto
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.)
Rene Tourolle et Fils A Responsabilite Ltee Ste
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Rene Tourolle et Fils A Responsabilite Ltee Ste
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Publication of EP0348279A1 publication Critical patent/EP0348279A1/de
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Publication of EP0348279B1 publication Critical patent/EP0348279B1/de
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    • 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
    • B21D22/04—Stamping using rigid devices or tools for dimpling
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/005—Edge deburring or smoothing

Definitions

  • the invention firstly relates to a process for finishing machining of two opposite edges of the same part, such as those delimiting in particular a female (bore) or male (shaft) cylindrical face of said part, according to a desired finished shape. of each edge, according to which each edge is shaped by applying under pressure two tools of complementary shapes of said desired finished shapes of the two edges.
  • FR-A-2 455 489 describes a similar process, but in fact limited to a very particular application of machining on a relatively thin sheet, which does not have the mechanical strength of the parts machined in accordance with the present invention.
  • one of the tools is fixed: if such a means were retained in the method according to the invention, it would cause deformations of the part, incompatible with the desired machining precision.
  • the completion of the machining that the invention aims for is done by hand, by particularly skilled workers, capable in particular of performing polishing by grinding the edges of the two ends of each bore of a group of 50 to 100 bores of a mounting flange used in the manufacture of an aircraft jet engine, for example.
  • the invention therefore intends to provide a complement to the aforementioned method capable of making it possible to obtain machining precision and to avoid any undesirable deformations, as well, of course, as obtaining automation and repeatability of the machining.
  • said complementary forms of the tools are limited by making them correspond only to the finishing zones of the two edges, however, during the actual finishing phase, simultaneous movements in translation of the two are controlled. tools.
  • a surface nitriding of the areas of these two edges is carried out before applying the two said tools under pressure to the two said opposite edges.
  • the invention also relates to a device for implementing the method defined above and which comprises a frame, two pressurized fluid jacks mounted on the frame, having respective movable elements arranged opposite one another and each supporting one of the two said tools, a source of pressurized fluid and a selective device for distributing pressurized fluid disposed between respective working chambers of the two jacks and the source of pressurized fluid, said working chambers being connected in parallel to the source of pressurized fluid by respective supply conduits, so that the effective connection of said working chambers to said source of pressurized fluid by means of said selective distribution device performs said simultaneous movement control in translation of the two tools.
  • a calibrated relief valve is placed on the supply duct of the working chamber of a first of the two said jacks so that, during said effective connection produced by means of the selective distribution device, the supply of the second of the two said working chambers is first carried out, and then the simultaneous supplies of the two working chambers are then carried out.
  • the machining which is at the origin of the invention, relates to certain fixing flanges that comprise high-performance gas turbine engines, these flanges comprising numerous holes whose finish, in particular of the edges, must be very careful .
  • the solution provided by the invention to the problem posed could a priori be applied to a machining problem close to the first: that concerning the finishing of the edges of a cylindrical part, and not the edges of a bore. And in fact, the invention also applies to the finishing of this second type of part.
  • a part 1 is already provided with a bore 2 which opens into two parallel faces 3 and 4 delimiting said part.
  • the internal cylindrical face 2 has a bore intersects the faces 3 and 4 along edges 5 and 6, which, in the example shown, have been deburred.
  • the edges 5 and 6 are the vertices of right angles, intersections of the cylindrical face 2 a and the plane faces 3 and 4.
  • each edge 5, 6 is arranged a mandrel 7, 8 which is provided with a surface, in this case toroidal 9, 10, the shape of which is complementary to that which should have, after application under pressure of this mandrel on the corresponding edge 5, 6, said edge, respectively.
  • each edge is obtained, from the configuration of FIG. 1, by moving the two mandrels 7 and 8 using a press, and applying compression forces to them 7 a , 8 a ( Figure 2) of a value such that each edge takes the finished shape 5 a , 6 a corresponding to the shape 9, 10 of the corresponding mandrel.
  • the two edges are formed by applying compressions having opposite directions (FIG. 2), which is obviously advantageous for the balance of the part 1 being finished, and of the machine itself, but which , in addition, avoids the creation of undesirable deformations of the surface 2 a , deformations which would be caused, otherwise, by the displacement of only one of the two mandrels 7 and 8.
  • the areas of the edges 5 and 6 have, prior to finishing with the mandrels 8 and 9, been surface nitrided, according to a treatment depth of between 0.5 mm and 1.5 mm for example. This nitriding facilitates the sliding of the faces 9 and 10 of the mandrels on the edges 5 and 6, and the finished shapes 5 a and 6 have said edges.
  • the compressions 7 a , 8 a were all carried out cold, in the actual machining operations carried out, that is to say without prior heating of the parts 1 or 14.
  • refractory alloys used in gas turbines comprising of the order of 50% chromium and / or nickel, or titanium, and whose elongation coefficient is around, or greater than, 8%.
  • FIG. 5 represents the device for controlling the respective movements in translation of the mandrels 7 and 8.
  • This device comprises: - two hydraulic cylinders 18, 19, the cylinders of which are fixed to the frame 17 of the finishing machine, and the pistons 24, 25 of which define two working chambers 20, 21 inside said cylinders for the extension of the cylinders , and two retraction chambers 22, 23 for the retraction of said cylinders, piston rods 26, 27 being integral with the pistons 24, 25 facing each other and supporting the mandrels 7, 8, respectively; - a pump 28; - a three-position fluid distributor 29; - a fluid reservoir 30; - The suction 31 and discharge 32 conduits connecting the pump 28 to the reservoir 30 and to the fluid distributor 29; - a conduit 33 connecting the fluid distributor 29 to the reservoir 30; - A conduit 34 connecting the discharge conduit 32 to the tank 30; - a relief valve 35, for protection against overpressure, calibrated at 350 bars, disposed on the duct 34; - A conduit 36, which is connected to
  • the three positions of the fluid distributor 29 correspond: - The first position, when the conduits 32 and 36 are connected, and when the conduits 39 and 33 are connected; - the second position, when the conduits 32 and 33 are put into communication, and when the conduits 36 and 39 are closed; and, the third position, when the conduits 32 and 39 are put into communication, and when the conduits 36 and 33 are put into communication.
  • This device operates in the manner described below.
  • the part 1 is placed on the frame 17 of the machine, on which it rests freely.
  • the operator places the fluid distributor 29 in its first position, which has the effect of directing the pressurized fluid discharged by the pump 28 towards the conduits 36 and 37, and, firstly, closing the conduit 38 by the relief valve 42 and, of course, the conduit 43 by the non-return valve 44.
  • the pressure in the conduit 37 and in the upper working chamber 20 does not reach the setting value (50 bars ) of the relief valve 42, only the jack 18 is supplied with fluid: only the mandrel 7 is moved and comes into contact with the part 1.
  • the pressure in the chamber 20 of the jack 18 and in the conduit 37 increases as and measure of strengthening the support of the mandrel 7 on the part 1, until reaching and exceeding the setting pressure of the relief valve 42.
  • the release of the part 1 is carried out by placing the fluid distributor 29 in its third position and, consequently, by supplying pressurized fluid to the chambers 22, 23 of the jacks 18, 19.
  • mandrels 7 and 8 act only in the limited area of the edges 5, 6 (5 a , 6 a ), but have no surface extending perpendicular to the axis of the translations 7 a , 8 a : according to the method according to the invention, there is no lateral draft of the mandrels.
  • the process according to the invention is new compared to: - stamping or stamping which aims to modify the general shapes of a part; - to burnish which provides for the rolling of a pressure roller, but does not, in principle, allow the production of left (non-planar) and repetitive finished shapes; and - to the definitive formation of previously roughed holes, made in thin plates and having imprecise final dimensions.
EP89401694A 1988-06-22 1989-06-16 Verfahren zum Endbearbeiten der zwei gegenüberliegenden Kanten eines Werkstückes und Vorrichtung zum Ausführen dieses Verfahrens Expired - Lifetime EP0348279B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8808394A FR2633207B1 (fr) 1988-06-22 1988-06-22 Procede d'usinage de finition de deux aretes opposees d'une meme piece et dispositif pour la mise en oeuvre du procede
FR8808394 1988-06-22

Publications (2)

Publication Number Publication Date
EP0348279A1 true EP0348279A1 (de) 1989-12-27
EP0348279B1 EP0348279B1 (de) 1992-08-19

Family

ID=9367595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401694A Expired - Lifetime EP0348279B1 (de) 1988-06-22 1989-06-16 Verfahren zum Endbearbeiten der zwei gegenüberliegenden Kanten eines Werkstückes und Vorrichtung zum Ausführen dieses Verfahrens

Country Status (6)

Country Link
US (1) US5024075A (de)
EP (1) EP0348279B1 (de)
JP (1) JPH0246927A (de)
CA (1) CA1320061C (de)
DE (1) DE68902514T2 (de)
FR (1) FR2633207B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744940A1 (fr) * 1996-02-16 1997-08-22 Drogo Maxime Piece metallique emboutie cylindrique creuse, son procede d'obtention et utilisation de cette piece comme manchon d'habillage ou bouchon amovible pour flacon
CN103084457A (zh) * 2013-02-18 2013-05-08 成都九鼎科技(集团)有限公司 减振器支承座收口工装
CN114473449A (zh) * 2022-02-18 2022-05-13 广东品嘉灵智能科技有限公司 一种密封圈压装机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717024A1 (de) * 1997-04-23 1998-10-29 Abb Patent Gmbh Verfahren zur Herstellung eines mit Schlitzen versehenen Kontaktstückes für eine Vakuumschaltkammer und Formwerkzeug zur Durchführung des Verfahrens
US6711928B1 (en) 1998-03-17 2004-03-30 Stresswave, Inc. Method and apparatus for producing beneficial stresses around apertures, and improved fatigue life products made by the method
US6615636B2 (en) 1998-03-17 2003-09-09 Stresswave, Inc. Method and apparatus for improving the fatigue life of components and structures using the stresswave process
US7047786B2 (en) 1998-03-17 2006-05-23 Stresswave, Inc. Method and apparatus for improving the fatigue life of components and structures
JP3664880B2 (ja) * 1998-07-08 2005-06-29 栃木富士産業株式会社 面取り用金型および該金型を用いた面取り加工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992470A (en) * 1959-02-16 1961-07-18 Raymond A Miller Edge rolling tool
SU596329A1 (ru) * 1975-11-21 1978-03-05 Valeryanov Sergej L Устройство дл обработки кромок отверстий
SU761582A2 (en) * 1978-10-30 1980-09-10 Sergej L Valeryanov Method of strengthening treatment of holes in cylindrical sections of metallic parts
FR2455489A1 (fr) * 1979-05-04 1980-11-28 Rca Corp Procede pour former un trou a bords arrondis dans une tole d'acier devant constituer l'ame d'une plaque a circuit imprime et ame ainsi obtenue
EP0044522A1 (de) * 1980-07-18 1982-01-27 ZF FRIEDRICHSHAFEN Aktiengesellschaft Verfahren zum Bearbeiten der Stirnkanten von Zahnrädern
SU948488A1 (ru) * 1981-02-13 1982-08-07 За витель jfXVTO i -; IS : :Г:Г: Способ двусторонней отбортовки концов труб

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GB672070A (en) * 1949-07-21 1952-05-14 Chambersburg Eng Co Forging apparatus and control thereof
GB694013A (en) * 1950-10-16 1953-07-08 Chambersburg Eng Co Improvements in impact forging apparatus
US2729943A (en) * 1953-05-26 1956-01-10 Chambersburg Eng Co Fluid-pressure-actuated apparatus
JPS44153Y1 (de) * 1965-07-24 1969-01-07
US3434327A (en) * 1966-11-01 1969-03-25 Mc Donnell Douglas Corp Stress coining
GB1391540A (en) * 1972-11-14 1975-04-23 Davy Int Ltd Manufacture of elongate bodies from metal powder
SU639623A1 (ru) * 1974-07-08 1978-12-30 Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Способ зачистки металла
US4245492A (en) * 1979-01-22 1981-01-20 Chambersburg Engineering Company Hydraulic pneumatic synchronizing system for counter-blow impact forging hammers
SU988436A1 (ru) * 1981-04-01 1983-01-15 Воронежское Производственное Объединение По Выпуску Кузнечно-Прессового Оборудования Им.М.И.Калинина Система синхронизации бесшаботного молота с соосно смонтированными на станине рабочими цилиндрами с установленными в них поршн ми и штоками с узлами креплени инструмента
DE3150996C1 (de) * 1981-12-23 1983-03-10 Krupp Stahl Ag, 4630 Bochum Verfahren zum Nachwalzen von kaltgewalztem Stahlband
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992470A (en) * 1959-02-16 1961-07-18 Raymond A Miller Edge rolling tool
SU596329A1 (ru) * 1975-11-21 1978-03-05 Valeryanov Sergej L Устройство дл обработки кромок отверстий
SU761582A2 (en) * 1978-10-30 1980-09-10 Sergej L Valeryanov Method of strengthening treatment of holes in cylindrical sections of metallic parts
FR2455489A1 (fr) * 1979-05-04 1980-11-28 Rca Corp Procede pour former un trou a bords arrondis dans une tole d'acier devant constituer l'ame d'une plaque a circuit imprime et ame ainsi obtenue
EP0044522A1 (de) * 1980-07-18 1982-01-27 ZF FRIEDRICHSHAFEN Aktiengesellschaft Verfahren zum Bearbeiten der Stirnkanten von Zahnrädern
SU948488A1 (ru) * 1981-02-13 1982-08-07 За витель jfXVTO i -; IS : :Г:Г: Способ двусторонней отбортовки концов труб

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PATENT ABSTRACTS OF JAPAN, vol. 11, no. 234 (M-611)[2681], 30 juilliet 1987, page 45 M 611; & JP-A-62 045 429 (SATO SEIKI K.K.) 27-02-1987 *
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744940A1 (fr) * 1996-02-16 1997-08-22 Drogo Maxime Piece metallique emboutie cylindrique creuse, son procede d'obtention et utilisation de cette piece comme manchon d'habillage ou bouchon amovible pour flacon
CN103084457A (zh) * 2013-02-18 2013-05-08 成都九鼎科技(集团)有限公司 减振器支承座收口工装
CN114473449A (zh) * 2022-02-18 2022-05-13 广东品嘉灵智能科技有限公司 一种密封圈压装机
CN114473449B (zh) * 2022-02-18 2022-11-22 广东品嘉灵智能科技有限公司 一种密封圈压装机

Also Published As

Publication number Publication date
DE68902514D1 (de) 1992-09-24
EP0348279B1 (de) 1992-08-19
FR2633207A1 (fr) 1989-12-29
US5024075A (en) 1991-06-18
JPH0246927A (ja) 1990-02-16
CA1320061C (en) 1993-07-13
FR2633207B1 (fr) 1990-10-19
DE68902514T2 (de) 1993-03-11

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