EP0348279B1 - 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
EP0348279B1
EP0348279B1 EP89401694A EP89401694A EP0348279B1 EP 0348279 B1 EP0348279 B1 EP 0348279B1 EP 89401694 A EP89401694 A EP 89401694A EP 89401694 A EP89401694 A EP 89401694A EP 0348279 B1 EP0348279 B1 EP 0348279B1
Authority
EP
European Patent Office
Prior art keywords
under pressure
edges
tools
working chambers
source
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 - Lifetime
Application number
EP89401694A
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English (en)
French (fr)
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EP0348279A1 (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
Original Assignee
Rene Tourolle et Fils A Responsabilite Ltee Ste
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Application filed by Rene Tourolle et Fils A Responsabilite Ltee Ste filed Critical Rene Tourolle et Fils A Responsabilite Ltee Ste
Publication of EP0348279A1 publication Critical patent/EP0348279A1/de
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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
    • 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 relates to a device allowing the implementation of a method of 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.
  • this device comprising 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 control of the simultaneous movements in translation of the two tools.
  • FR-A-2 455 489 describes a similar machining process, but in fact limited to a very specific machining application 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.
  • SU-A-948 488 which represents the closest prior art, describes a device which comprises a frame, two pressurized fluid jacks mounted on the frame, having respective movable elements arranged opposite one of the and each supporting one of the two 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 through respective supply conduits, so that the effective connection of said working chambers to said source of pressurized fluid via said selective dispensing device performs said control of the simultaneous movements in translation of the two tools.
  • the invention provides for a two-phase sequence, according to which the first contact with the part is always made by the same tool, the compression of the part by the two tools moving one towards the other occurring after said first contact.
  • 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, then that the simultaneous supplies of the two working chambers are then carried out
  • 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 propose a device 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 machining.
  • 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 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.
  • edges 5 and 6 have, prior to the 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%.
  • 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 set 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 measurement of the reinforcement of 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.

Claims (2)

1. Vorrichtung zur Durchführung eines Verfahrens zum Endbearbeiten zweier gegenüberliegender Kanten (5, 6) eines Werkstücks (1), beispielsweise jener, die insbesondere eine zylindrische Innenfläche (2a) oder Außenfläche (14a) (Welle (14)) des Werkstücks begrenzen, mit welcher man jede Kante dadurch bearbeitet, daß zwei Werkzeuge (7, 8) mit Druck (7a, 8a) beaufschlagt werden durch Steuerung (18 - 20, 19 - 21) der gleichzeitigen Gegeneinanderverschiebung der zwei Werkzeuge, wobei die Vorrichtung ein Tragelement (17) aufweist, zwei auf dem Tragelement angeordnete Druckflüssigkeitszylinder (18, 19), die jeweils einander gegenüberliegend angeordnete bewegliche Elemente (26, 27) aufweisen und jeweils eines der beiden Werkzeuge (7, 8) tragen, eine Druckflüssigkeitsqüelle (28) und ein zwischen den jeweiligen Arbeitskammern (20, 21) der zwei Zylinder und der Druckflüssigkeitsquelle angeordnetes Wegeventil (29), wobei die Arbeitskammern durch jeweilige Zufuhrleitungen so mit der Druckflüssigkeitsquelle (28) parallelgeschaltet sind (37, 38), daß die tatsächliche Verbindung der Arbeitskammern mit der Druckflüssigkeitsquelle durch das Wegeventil die Steuerung der gleichzeitigen Verschiebung der zwei Werkzeuge ermöglicht,
dadurch gekennzeichnet, daß ein geeichtes Ausflußventil (42) in der Zufuhrleitung (38) der Arbeitskammer (21) eines ersten (19) der zwei Zylinder derart angeordnet ist, daß infolge der durch das Wegeventil (29) erzeugten tatsächlichen Verbindung zunächst die Versorgung der zweiten (20) der zwei Arbeitskammern, danach die gleichzeitige Versorgung der beiden Arbeitskammern erreicht wird.
2. Verfahren zur Verwendung einer Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß bevor ein Druck auf die zwei Werkzeuge (7, 8) an den beiden gegenüberliegenden Kanten ausgeübt wird, eine Oberflächennitrierhärtung im Bereich der beiden Kanten durchgeführt wird.
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 EP0348279A1 (de) 1989-12-27
EP0348279B1 true 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)

Families Citing this family (8)

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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
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
CN103084457B (zh) * 2013-02-18 2016-03-16 成都九鼎科技(集团)有限公司 减振器支撑座收口方法
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

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GB672070A (en) * 1949-07-21 1952-05-14 Chambersburg Eng Co Forging apparatus and control thereof
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US2729943A (en) * 1953-05-26 1956-01-10 Chambersburg Eng Co Fluid-pressure-actuated apparatus
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SU596329A1 (ru) * 1975-11-21 1978-03-05 Valeryanov Sergej L Устройство дл обработки кромок отверстий
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Also Published As

Publication number Publication date
DE68902514D1 (de) 1992-09-24
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
EP0348279A1 (de) 1989-12-27

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