EP1582278B1 - Schmiedegesenk mit Positionierelementen - Google Patents

Schmiedegesenk mit Positionierelementen Download PDF

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Publication number
EP1582278B1
EP1582278B1 EP05102453A EP05102453A EP1582278B1 EP 1582278 B1 EP1582278 B1 EP 1582278B1 EP 05102453 A EP05102453 A EP 05102453A EP 05102453 A EP05102453 A EP 05102453A EP 1582278 B1 EP1582278 B1 EP 1582278B1
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EP
European Patent Office
Prior art keywords
die
notches
forging
matrix
dies
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.)
Active
Application number
EP05102453A
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English (en)
French (fr)
Other versions
EP1582278A1 (de
Inventor
Alain Lorieux
Jean-Jacques Levy
Daniel Gaston Lhomme
Claude Planazet
Pierre George
Camille Auguste Albert Cougnaud
Alain Paul Bourgeois
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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Publication date
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Publication of EP1582278A1 publication Critical patent/EP1582278A1/de
Application granted granted Critical
Publication of EP1582278B1 publication Critical patent/EP1582278B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • 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
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • 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
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B21C51/005—Marking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
    • B21K3/04—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K31/00—Control devices specially adapted for positioning tool carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/20—Making working faces of dies, either recessed or outstanding

Definitions

  • the present invention relates to the field of forging of metal parts and in particular of complex and left-shaped parts, such as blades of large turbomachines.
  • Forging consists of plastically deforming a metal bar under the effect of shocks or by the application of pressure. It is generally carried out in stages by forming successive blanks which progressively approach the finished part. If necessary, the forging of the part is completed by a calibration phase leading to more precise shapes.
  • the part is forged by forcing a blank thereof to be filled by shock or pressure, a cavity engraved in a matrix corresponding to the shape of the part to be obtained.
  • a blank thereof In the case of titanium, its flow stress strongly dependent on the temperature, the forging is carried out hot up to a certain limit imposed by the structural evolution of the material which alters its mechanical properties.
  • the stamping operations are generally performed on mechanical presses whose matrices are preheated.
  • the forging time is relatively short to avoid too rapid cooling of the workpiece and too high temperature rise of the matrix by thermal conduction between the workpiece and itself insofar as the temperature of the tool is different from that of the room.
  • a lubricant is deposited on the etching of the die to facilitate the flow of the material and to reduce the forging forces.
  • the present invention relates firstly to the development of tools such as the dies presented above.
  • the imprint of the matrix does not rigorously the shape and dimensions of the forge piece to obtain. It deviates from it by "corrective terms" which compensate the elasto-plastic deformations of the tools during the forging. It is not exactly possible to provide these correction terms, and it is therefore necessary to retouch the matrix following measurements made on the test pieces obtained.
  • "precision" forging the extra thicknesses are small, for example 0.8 mm, so that the finished part can be obtained by polishing the abrasive belt of the blank or, where appropriate, especially when it is in contact with the blank. titanium, by the combination of chemical milling and abrasive belt polishing. This is the case for example of the pale blades.
  • this matrix When the matrix is developed, that is to say when the raw forging test pieces obtained have the desired shape and dimensions, this matrix can be put into operation to manufacture series parts.
  • the matrix deteriorates progressively in operation, and it becomes necessary, for example after 1000 to 5000 pieces as appropriate, to restore the matrix or to use another.
  • the restoration of a degraded matrix consists, according to a first method, in reloading the areas where material has been torn off and in machining and polishing a new imprint, that is to say in rewashing the die by electroerosion.
  • a second method the impression is entirely machined after having removed the nitrided layer (hardened by heat or thermo-mechanical surface treatments) and removed a thickness of a few mm of material. This technique is referred to as rewaxing.
  • the restoration of a matrix or the fabrication of a new matrix require the same adjustments as the initial matrix. They are therefore also long and expensive.
  • the object of the invention is to improve the control of the alignment of the dies in order to optimize the development time for forging large series of parts.
  • the forging die comprising on one face, a forging part impression such as a turbomachine half-blade with an alignment control means, is characterized in that it comprises on said face a reference means in two directions relative to which the position of said fingerprint is defined, said marker means consisting of two pads projecting from said face and each having two notches defining said two directions, and allowing said control of alignment.
  • the two notches are arranged in a cross.
  • the notches are arranged to be parallel in pairs. In particular the two notches are aligned.
  • the invention also relates to a method for controlling, after machining the impressions, the alignment of two matrices relative to one another.
  • this method the position of the two lateral faces of one of the dies with respect to said marking means is determined and, if appropriate, one or the other of the lateral faces of said die is corrected.
  • said positions are determined by probing on a three-dimensional measuring machine (CMM).
  • CCM three-dimensional measuring machine
  • the invention also relates to the use of said marker means on the matrices for controlling the alignment of the matrix blocks (during the forging operation in order to record the relative movements of a matrix with respect to the 'other).
  • said marker means on the matrices for controlling the alignment of the matrix blocks (during the forging operation in order to record the relative movements of a matrix with respect to the 'other).
  • there is a plot of malleable material on each of the pellets the pads are crushed between the pellets of the two matrices and the marks made by the notches on the studs are checked.
  • Document GB 1130963 which relates to a forging press with control of the alignment between the two dies of the press. This control is performed by pneumatic means which deliver a pressure depending on the horizontal displacement of one die relative to the other. This means is not known with that of the invention.
  • FIG. 10 shows a matrix block for forging a compressor or blower blade of a turbojet engine.
  • the matrix is in the form of a block with a rectangular section whose main face 11 here comprises the cavity E of a half blade. This main face 11 is bordered by four lateral faces 12, 13, 14, 15.
  • the shape of the cavity is defined by appropriate calculation means and is produced by machining or electroerosion or any other means known to the person skilled in the art. 'art. It is performed for example, either on a numerically controlled machining center, or on a spark erosion machine (EDM).
  • EDM spark erosion machine
  • a peripheral zone Ep is generally provided for the formation of a burr cord as is known in the art.
  • the embodiment of the imprint is not part of the invention.
  • the etching comprises a main axis XX and at least one reference point P constituting the machining origin of the imprint.
  • the geometry of the impression is thus defined with respect to these two longitudinal and transverse references.
  • the longitudinal side faces 12 and 14 are parallel to the axis XX.
  • the transverse faces 13 and 15 are perpendicular thereto.
  • the complete forging matrix of the part comprises a second block with the imprint of a half-blade of complementary shape to the previous one.
  • For forging the workpiece place and fix the two blocks in the trays of a press. A lower tray and an upper tray.
  • the blank of the piece to be forged is placed in the lower die block and the press is actuated. As you approach, the two blocks deform the blank until you obtain the part with the shape defined by the imprints, with a complete burr on its periphery.
  • the quality of the forging depends in part on the good positioning of the two impressions relative to each other at the time of the striking. This depends both on the good positioning of the imprints in their respective matrix block and the good positioning of the two blocks relative to each other.
  • the device of the invention allows a simple and effective way to achieve this result.
  • two pellets 21 and 23 are produced by etching, with the cavity E, these pellets protruding from the upper face 11 of the block.
  • the two pellets are in form here of disc but they can have another form.
  • Figure 2 an enlarged view of the pellet 21, in perspective.
  • Each pellet comprises two notches at right angles 21L, 21T, and 23L, 23T respectively.
  • the two longitudinal notches 21L and 23L are made parallel to the axis XX of the cavity, at a predetermined distance. Here the two notches are at the same distance from the axis XX. They are aligned.
  • the transverse notches 21T and 23T are perpendicular to the preceding and each at a predetermined distance from the reference point P. The positions of the impression and the notches are thus perfectly defined in space with respect to each other.
  • the machined matrix is measured by probing, for example on a three-dimensional measuring machine MMT, the position of the pellets 21 and 23 with respect to the lateral faces 12, 14 and 13, 15. for each of the two matrix blocks, on the one hand that the faces 12 and 14 are well parallel to the direction of the notches 21L and 23L and at a good distance from them, on the other hand that the faces 13 and 15 are well parallel to the direction of the notches 21T and 23T and at a good distance therefrom.
  • the blocks are mounted on the plates of the press.
  • the assembly is made by clamping the lateral faces of the blocks against abutment surfaces B1 and B2.
  • the positioning of the lateral faces 12 and 14 is regulated by means of so-called "sloping" wedges 31 and 32.
  • These wedges are in the form of dihedrons and are arranged so as to have two parallel faces and two faces inclined with respect to these last, in contact with each other. By shifting one shim relative to the other parallel to their parallel faces, one moves aside or brings them closer together.
  • the two shims are supported one against the lateral face 14 of the block the other against a stop 110 secured to the plate.
  • a "lead" pad PB or other malleable material is deposited on each of the two pellets of the lower die and the upper die is lowered until the two studs are crushed.
  • FIGS. 4A and 4B show the two pads after crushing, in position between the pads.
  • the operator can easily verify that the notches 21T (or 23T) of the two upper and lower pads are not aligned in the example shown. By bringing the pad thus deformed into a measuring apparatus, it can accurately determine the correction to be made in the longitudinal position.
  • This check is carried out after each machining or re-machining of etching, and for each start of the forging campaign.
  • the pads finally allow to control the spacing between the lower and upper matrices after the striking with respect to the thickness of the burr that is desired.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Claims (7)

  1. Schmiedegesenk, welches an einer Seite eine Einprägung für ein zu schmiedendes Teil, wie eine Turbinen-Halb-Schaufel, und ein Mittel zum Steuern einer Ausrichtung aufweist, dadurch gekennzeichnet, dass es an dieser Seite ein Mittel aufweist, welches entlang zweier Richtungen, bezüglich welcher die Position der Einprägung definiert ist, eine Markierung bildet, wobei dieses Mittel aus zwei Plättchen gebildet ist, welche bezüglich dieser Seite vorstehen, und jeweils zwei Einkerbungen aufweisen, welche die zwei Richtungen definieren, und das Steuern der Ausrichtung ermöglichen.
  2. Gesenk gemäß Anspruch 1, dadurch gekennzeichnet, dass die Einkerbungen derart angeordnet sind, dass sie paarweise parallel sind.
  3. Gesenk gemäß Anspruch 2, dadurch gekennzeichnet, dass die zwei Einkerbungen fluchten.
  4. Verfahren zum Steuern, nach maschineller Bearbeitung der Einprägungen, der gegenseitigen Ausrichtung zweier Gesenke gemäß einem der vorhergehenden Ansprüche, wobei die Position der zwei Seitenflächen eines der Gesenke bezüglich des eine Markierung bildenden Mittels bestimmt wird, und gegebenenfalls die eine oder die andere der Seitenflächen des Gesenks berichtigt wird.
  5. Verfahren gemäß dem vorhergehenden Anspruch, wobei diese Positionen mittels Abtastens auf einer Maschine zum dreidimensionalen Vermessen (MMT) bestimmt werden.
  6. Verwendung der eine Markierung bildenden Mittel bei den Gesenken gemäß einem der Ansprüche 1 bis 3 zum Steuern der Ausrichtung von Gesenk-Blöcken bei der Montage in der Schmiede-Presse.
  7. Verwendung gemäß dem vorhergehenden Anspruch eines Gesenks gemäß einem der Ansprüche 1 bis 3, wobei ein Kontaktstück aus formbarem Material auf jeder der Pastillen angeordnet wird, die Kontaktstücke zwischen den Pastillen der zwei Gesenke zusammengedrückt werden, und die von den Einkerbungen auf den Kontaktstücken erzeugten Markierungen verifiziert werden.
EP05102453A 2004-03-29 2005-03-29 Schmiedegesenk mit Positionierelementen Active EP1582278B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403230 2004-03-29
FR0403230A FR2867992B1 (fr) 2004-03-29 2004-03-29 Matrice de forgeage avec moyen de reperage

Publications (2)

Publication Number Publication Date
EP1582278A1 EP1582278A1 (de) 2005-10-05
EP1582278B1 true EP1582278B1 (de) 2007-01-17

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ID=34878459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102453A Active EP1582278B1 (de) 2004-03-29 2005-03-29 Schmiedegesenk mit Positionierelementen

Country Status (7)

Country Link
US (1) US7370506B2 (de)
EP (1) EP1582278B1 (de)
CN (1) CN100548530C (de)
DE (1) DE602005000451T2 (de)
ES (1) ES2281053T3 (de)
FR (1) FR2867992B1 (de)
RU (1) RU2378080C2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0915949D0 (en) * 2009-09-11 2009-10-28 Rolls Royce Plc A die former
CN101811169B (zh) * 2010-04-09 2012-03-21 无锡透平叶片有限公司 一种叶片模具的分型自锁结构及分型设计方法
CN103009018B (zh) * 2011-09-20 2015-10-28 沈阳黎明航空发动机(集团)有限责任公司 一种超细晶、高强度合金叶片锻件制造方法
CN102974736A (zh) * 2012-11-30 2013-03-20 无锡透平叶片有限公司 透平叶片坯料的定位结构
CN102974735B (zh) * 2012-12-06 2015-03-25 无锡透平叶片有限公司 大型锻模的定位调节结构
FR3014150B1 (fr) * 2013-11-29 2018-03-02 Safran Aircraft Engines Soufflante, en particulier pour une turbomachine
CN103673950A (zh) * 2013-12-15 2014-03-26 无锡透平叶片有限公司 一种快速检测叶片锻造模具错移量的方法
CN103691866B (zh) * 2013-12-15 2015-10-14 无锡透平叶片有限公司 一种提高叶片坯料在模具上定位稳定性的方法
CN104493040A (zh) * 2014-12-23 2015-04-08 无锡透平叶片有限公司 一种叶片锻造用模座导向结构
CN105414436B (zh) * 2015-12-31 2018-07-06 无锡透平叶片有限公司 一种便于检测锻件错移量的叶片锻造模具
CN110355315A (zh) * 2018-04-11 2019-10-22 辽宁五一八内燃机配件有限公司 一种自动化锻造定位模具装置
FR3097791B1 (fr) 2019-06-28 2021-06-18 Safran Aircraft Engines Noyau de conformation a chaud d’une piece metallique et procede de fabrication, de regeneration et de conformation
RU2737836C1 (ru) * 2020-04-03 2020-12-03 Федеральное государственное бюджетное образовательное учреждение высшего образования "Рыбинский государственный авиационный технический университет имени П.А. Соловьева" Штамп для штамповки лопаток

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DE1232439B (de) * 1965-04-24 1967-01-12 Fuchs Fa Otto Pruefeinrichtung zur pneumatischen UEberwachung einer Gesenkpresse
GB1331945A (en) * 1970-10-05 1973-09-26 Doncasters Monk Bridge Ltd Forging dies for the forging of turbine or compressor baldes of vanes
US4195510A (en) * 1978-06-26 1980-04-01 Juergens William A Draw bead having alternating pressure surfaces and grooves
US4930334A (en) * 1989-07-25 1990-06-05 Deere & Company Quick change structure for trim die
CN1048994A (zh) * 1989-10-18 1991-02-06 航空工业部红原锻铸厂 大型汽轮机钛合金长叶片精锻工艺及装置
US5083371A (en) * 1990-09-14 1992-01-28 United Technologies Corporation Hollow metal article fabrication
US5471923A (en) * 1994-12-19 1995-12-05 Chrysler Corporation Multiple stamping dies with cumulative stamping markers and method of stampings parts
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US7007535B2 (en) * 2003-10-14 2006-03-07 Stolle Machinery Company, Llc Method and apparatus for aligning components of a press

Also Published As

Publication number Publication date
CN100548530C (zh) 2009-10-14
ES2281053T3 (es) 2007-09-16
EP1582278A1 (de) 2005-10-05
FR2867992A1 (fr) 2005-09-30
RU2378080C2 (ru) 2010-01-10
DE602005000451T2 (de) 2007-11-15
FR2867992B1 (fr) 2007-06-29
DE602005000451D1 (de) 2007-03-08
RU2005108677A (ru) 2006-10-10
CN1754635A (zh) 2006-04-05
US7370506B2 (en) 2008-05-13
US20050247101A1 (en) 2005-11-10

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