EP2484462B1 - Procédé de production d'une préforme forgée et dispositif de déformage ou dispositif de refoulment chaud - Google Patents

Procédé de production d'une préforme forgée et dispositif de déformage ou dispositif de refoulment chaud Download PDF

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Publication number
EP2484462B1
EP2484462B1 EP12000767.9A EP12000767A EP2484462B1 EP 2484462 B1 EP2484462 B1 EP 2484462B1 EP 12000767 A EP12000767 A EP 12000767A EP 2484462 B1 EP2484462 B1 EP 2484462B1
Authority
EP
European Patent Office
Prior art keywords
forming tool
forming
subspace
diameter
cavity
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.)
Not-in-force
Application number
EP12000767.9A
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German (de)
English (en)
Other versions
EP2484462A2 (fr
EP2484462A3 (fr
Inventor
Volker Wengenroth
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.)
SMS Group GmbH
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SMS Group GmbH
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Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2484462A2 publication Critical patent/EP2484462A2/fr
Publication of EP2484462A3 publication Critical patent/EP2484462A3/fr
Application granted granted Critical
Publication of EP2484462B1 publication Critical patent/EP2484462B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • 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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting

Definitions

  • the invention relates to a method for producing a forging preform for forging a forged part, in which a contour of a workpiece is formed into a forging contour using a forming tool, wherein the forging contour corresponds to a first forged part contour with a required volume predistribution of the forging to be forged.
  • the invention relates to a forming device or a hot forging device for producing a forging preform for forging a forged part with a forming tool, wherein the forming tool has a workpiece forming contour with variable cross sections, by means of which a volume predistribution of the forging preform can be generated.
  • the forming of the substantially cylindrical workpiece to the forging preform is done in the prior art by means of transverse and / or stretching rolling process, in which a forging preform with an already defined volume pre-distribution is worked on the substantially cylindrical workpiece. This makes it much easier to get started in the actual forging process.
  • a upsetting is carried out in a cavity in which a cavity is formed by matrices, in which an upsetting die dips to appropriately transform the workpiece into the cavity, so that its surface then essentially the Surface of the Werk Swissumforminnenkontur the cavity corresponds.
  • Generic methods and devices are for example from the EP 0 786 296 A1 or from the JP 59-054440 A known.
  • the object is achieved by a method according to claim 1 or by a forming device according to claim 6.
  • Forming device 1 shown comprises a forming tool 2, which in the illustration according to the FIG. 1 is shown open.
  • the forming device 1 in this embodiment is a hot-swaging device 3.
  • the forming tool 2 is radially configured in two parts in an upper part 6 and in a lower part 7.
  • the upsetting punch 5 is guided through a punch guide 5A and it can be moved by a drive not shown here in alignment with the upsetting axis 4 in the forming tool 2 or out of the forming tool 2 out.
  • the forming tool 2 has a cavity 8 with variable cross sections 9, which accordingly provides an asymmetrical workpiece forming inner contour 10 within the forming tool 2.
  • the forming tool 2 is additionally divided in this embodiment into three longitudinal segments 11, 12 and 13, wherein the front longitudinal segment 11, a front Festmatrize 14 and a front clamping die 15, the middle longitudinal segment 12, a middle Festmatrize 16 and a central clamping die 17 and the rear longitudinal segment 13 comprises a rear fixed die 18 and a rear clamping die 19.
  • the cavity 8 is designed both radially and axially in several parts.
  • Each of the clamping matrices 15, 17 and 19, respectively, is fixed but hinged to its associated fixed die 14, 16 and 18, respectively, by means of a corresponding hinge connection 20. It is understood that in other embodiments, other arrangements of the different matrices and deviating measures to a positioning of the same can be provided to each other.
  • the forming device 2 of this embodiment is also characterized by a common Axial Installations worn 21, to which all Festmatrizen 14, 16 and 18 via the respective hinge joint 20 - and thus indirectly also all clamping matrices 15, 17 and 19 - are mounted axially displaceable one behind the other.
  • the Axial Environments Republic 21 is in this embodiment structurally simple designed as a single linear crossmember. But it can also be implemented as a multi-part component or group of components, should this be necessary.
  • the forming device 1 still has a holding device 22 with holding elements 23, 24 and 25th
  • the longitudinal segments 11, 12 and 13 are fixed in a displaceable manner on the common axial guide device 21.
  • the individual fixed matrices 14, 16 and 18 are screwed in the present embodiment by means of screw 26 to the respective holding elements 23, 24 and 15. It is understood that other connection options, such as quick release or positive connection, can be provided here.
  • the forming device 1 Since in particular two axially adjacent fixed dies 14, 16, 18 of the forming tool 2 are arranged axially loosely adjacent to one another, the forming device 1 has an axial stop 27, on which especially the fixed dies 14, 16, 18 can be axially supported during an upsetting process.
  • the axial stop 27 is designed in this embodiment structurally simple as a replaceable component of the axial guide 21.
  • a workpiece 33 with a substantially cylindrical contour 34 is inserted into the cavity 8 (see FIG. 2 ).
  • the forming tool 2 is closed, as it is in the FIG. 3 is shown.
  • the respectively on the fixed matrices 14, 16 and 18 lowered clamping matrices 15, 17 and 19 are respectively locked by means of a quick clamping device 35, 36 and 37 respectively. In this respect, a popping of the forming device 2 is excluded during the compression process.
  • the forging preform 30 now has a defined volume distribution which substantially corresponds to that of a forging part after a first forging step.
  • a hot upsetting method for producing a forging preform 30 with variable cross sections 32 for producing a forged part is used for the first time.
  • the sectional view according to the FIG. 5 shows the forming device 1 in the region of the front longitudinal segment 11 with the forming tool 2 open.
  • the front fixed die 14 of the forming tool 2 is fastened with two first screws 40 and 41 of the screw connection 26 to the first holding element 23 of the holding device 22.
  • the first holding element 23 has an upper part 42 facing the front solid die 14 and a lower part 43 facing the axial guiding device 21.
  • the upper part 42 is in this case screwed with two hexagon socket screws 44 and 45 to the lower part 43, it being understood that in this regard in other embodiments, other types of fastening or a one-piece design of Solid die 14 may be provided.
  • the remaining fixed matrices 16, 18 are similar in this embodiment, but this need not necessarily be the case.
  • the axial guide device 21 comprises a foot part 46 and a guide part 47, on which the longitudinal segments 11, 12 and 13 of the forming tool 2 are displaceably mounted.
  • the guide member 47 is screwed along the Axial arrangements adopted 21 with a number of other screws 48 to the foot part 46.
  • the first quick-clamp connection 35 of the hinge joint 20 is flanged with a Flanschverschraubung 49.
  • the quick-clamping connection 35 has a lever mechanism 50, by means of which the front longitudinal segment 11 of the forming tool 2 can be manually opened or closed.
  • the quick-clamp connection 35 corresponds to the upper part 42 by means of a lower leg 51
  • the quick-clamp connection 35 is screwed to a corresponding upper leg 52 on the front clamping template 15.
  • a screw 53 is provided.
  • the sectional view according to the FIG. 6 shows the forming device 1 in a closed state, in which the front clamping die 15 is lowered onto the front Festmatrize 14.
  • the cavity 8 is closed at least in the region of the front longitudinal segment 11.
  • the quick clamping mechanism 35 is here in a locked position 54, so that the front clamping die 15 does not lift off from the front fixed die 14 during a forming process and thereby the forming tool 2 would be at least partially opened.
  • first longitudinal segment 11 explained here can be transferred to the further longitudinal segments 12 and 13 so that they are not additionally explained
  • each in a schematic plan according to the FIGS. 7 and 8th For example, the front solid die 14, the middle solid die 16, and the rear solid die 18 are again exemplified.
  • the Festmatrizen 14, 16 and 18 are arranged along the upsetting axis 4 axially behind one another and in particular during the upsetting axially of the arrangement according to FIG. 7 to the arrangement FIG. 8 moved together.
  • this procedure is not mandatory and it is conceivable that the matrices are already collapsed before upsetting or even in the axial direction only one die is used, but this to relatively large axial movements between the workpiece and tool just in the inner wall of the Workpiece, which on the one hand increase wear and on the other hand energy consumption.
  • the front fixed die 14 configures a first lower subspace 55 of the cavity 8 of the forming tool 2. Accordingly, the middle fixed die 16 form a second lower subspace 56 and the rear fixed die 18 form a third lower subspace 57 of the cavity 8.
  • the subspaces 55, 56 and 57 of the fixed matrices 14, 16, 18 and the corresponding subspaces of the clamping matrices 15, 17, 19 are procedurally relatively simple in this embodiment by means of an erosion process in the respective die 14, 15, 16, 17, 18 and 19 incorporated.
  • the front Festmatrize 14 has two countersunk bores 58 and 59 for the two previously described screws 40 and 41.
  • Corresponding counterbores (not numbered separately here) can be found on the two fixed matrices 16 and 18.
  • first subspace 55 has a subspace diameter 60 that is critically greater than an associated subspace length 61 of the first subspace 55
  • means 62 for partially reducing the subspace diameter 60 are provided in the subspace 55, which are implemented as a flank dome 63 in this embodiment.
  • flank mandrel 63 comprises a clamping mandrel-side fixed longitudinal mandrel 64 and a fixed-die-side fixed longitudinal mandrel 65 (see FIG Figures 5 and 8th ), which protrude into the cavity 8.
  • a means for indexing a desired flow behavior is arranged within the cavity 8; in areas of the cavity 8, in which the subspace diameter 60 is greater than a designated inner diameter 66 of the forming tool 2, in which the upsetting die 5 is arranged or guided.
  • radial pressure jaws can be exerted on the workpiece 33 in a structurally particularly simple manner, which in particular run essentially perpendicular to the axial upsetting direction 38.
  • the workpiece 33 is thereby at least partially reshaped, so that the corresponding workpiece material flows within the subspace 55 before the actual Axialstauchrea with a desired flow behavior, whereby a breaking of the workpiece 33 during the axial upsetting is almost impossible.
  • FIG. 9 illustrated embodiment substantially corresponds to the embodiment according to FIGS. 1 to 8 , so that identically acting assemblies are also numbered identically.
  • the embodiment according to FIG. 9 Means 62 for partially reducing the subspace diameter 60, which protrude much less into the cavity 8 and the workpiece 33 when closing the matrices 14 to 19 substantially only frictionally in the radial direction, ie parallel to the subspace diameter 60, fix.
  • an elastic deformation by means of corresponding molding areas 67, 68 of the means 62 for partially reducing the partial space diameter 60 is sufficient for this purpose, in which case a plastic deformation may also be provided.

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

Claims (14)

  1. Procédé de production d'une préforme forgée (30) pour le forgeage d'une pièce forgée, pour lequel un contour (34) d'une pièce (33) est déformé à l'aide d'un outil de déformage (2) en un contour de préforme forgée (31), caractérisé en ce que la pièce (33) est introduite dans une cavité (8) de l'outil de déformage (2) et est au moins partiellement conformée lors de la fermeture de la cavité (8), la pièce (33) est ensuite refoulée dans l'outil de déformage (2) fermé en une préforme forgée (30) et peut être suite à cela préparée en tant que préforme forgée (30) avec une répartition préliminaire de volume définie pour un processus de forgeage ultérieur.
  2. Procédé selon la revendication 1, caractérisé en ce que la pièce (33) est conformée plastiquement.
  3. Procédé selon la revendication 1, caractérisé en ce que la pièce (33) n'est conformée que de manière élastique.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la pièce (33) est maintenue par friction déjà avant le refoulement.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'outil de déformage (2) comprend plusieurs segments longitudinaux (11, 12, 13) qui sont disposés à distance les uns des autres au début de l'opération de refoulement et sont positionnés les uns par rapport aux autres vers une cavité commune pendant le refoulement.
  6. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) pour produire une préforme forgée (30) pour le forgeage d'une pièce forgée avec un outil de déformage (2), pour lequel l'outil de déformage (2) comporte un contour de déformage de pièce (10) avec des sections transversales variables (9) au moyen desquelles une répartition de volume peut être générée sur la préforme forgée (30), caractérisés en ce que l'outil de déformage (2) comporte sur son côté tourné vers un poinçon (5) un diamètre intérieur (66) stylisé, l'outil de déformage (2) comportant dans des parties d'espace (55) de la cavité (8) avec un diamètre de partie d'espace (60) supérieur au diamètre intérieur stylisé (66), des moyens (62) pour la réduction partielle du diamètre de la partie d'espace (60).
  7. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon la revendication 6, caractérisés en ce que l'outil de déformage (2) comporte une cavité (8) avec des sections transversales variables (9).
  8. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon la revendication 6 ou 7, caractérisés en ce que l'outil de déformage (2) comprend plus d'un segment longitudinal (11, 12, 13) et en ce que les segments longitudinaux (11, 12, 13) sont disposés axialement l'un derrière l'autre sur une direction de guidage axiale commune (21).
  9. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon la revendication 8, caractérisé en ce que les segments longitudinaux (11, 12, 13) de l'outil de déformage (2) sont disposés pouvant être changés sur la direction de guidage axiale commune (21).
  10. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon l'une quelconque des revendications 6 à 9, caractérisés en ce que la cavité (8) est constituée tant radialement qu'axialement en plusieurs parties, pouvant être notamment constituée modifiable.
  11. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon l'une quelconque des revendications 6 à 10, caractérisés en ce que l'outil de déformage (2) dans les parties d'espace (55) de la cavité (8) avec un diamètre de partie d'espace (60) supérieur au diamètre intérieur stylisé (66) comporte des moyens (62) pour réduire partiellement le diamètre de partie d'espace (60) perpendiculairement au diamètre de partie d'espace supérieur (60).
  12. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon l'une quelconque des revendications 6 à 11, caractérisés en ce que l'outil de déformage (2) dans les parties d'espace (55, 56, 57) avec une longueur de partie d'espace (61) supérieure à 1, 5 fois le diamètre de partie d'espace de la partie d'espace (55) correspondante comporte des moyens (62) pour la réduction partielle du diamètre de partie d'espace (60).
  13. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon la revendication 11 ou 12, caractérisés en ce que les moyens (62) pour la réduction partielle du diamètre de partie d'espace (60) comportent un mandrin à flancs (63), lequel pénètre partiellement dans la cavité (8) de l'outil de déformage (2).
  14. Dispositif de déformage (1) ou dispositif de refoulement à chaud (3) selon l'une quelconque des revendications 11 à 13, caractérisé en ce que les moyens (62) pour la réduction partielle du diamètre de la partie d'espace (60) comportent au moins une zone de conformation (67, 68) formant de la friction.
EP12000767.9A 2011-02-04 2012-02-06 Procédé de production d'une préforme forgée et dispositif de déformage ou dispositif de refoulment chaud Not-in-force EP2484462B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011010446 2011-02-04
DE102011105244A DE102011105244A1 (de) 2011-02-04 2011-06-10 Verwendung eines Warmstauchverfahrens, Verwendung eines Umformwerkzeuges, Verfahren zum Erzeugen einer Schmiedevorform und Umformvorrichtung oder Warmstauchvorrichtung

Publications (3)

Publication Number Publication Date
EP2484462A2 EP2484462A2 (fr) 2012-08-08
EP2484462A3 EP2484462A3 (fr) 2012-10-24
EP2484462B1 true EP2484462B1 (fr) 2017-07-26

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DE (1) DE102011105244A1 (fr)

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CN102873237A (zh) * 2012-10-17 2013-01-16 西南铝业（集团）有限责任公司 一种t型锻件制坯加工工艺及其装置
CN109317588B (zh) * 2018-10-16 2020-07-24 中国航发南方工业有限公司 航空发动机叶片锻造方法及模具
CN113477865B (zh) * 2021-08-19 2022-10-28 中国航发沈阳黎明航空发动机有限责任公司 一种短夹持半闭式可调节顶锻模具
CN113680939B (zh) * 2021-08-28 2023-09-01 湖北三环锻造有限公司 丁字臂下沉式镦粗模
CN114309405B (zh) * 2021-12-30 2023-05-05 广东联塑阀门有限公司 一种不锈钢嵌件的温镦工艺及系统
CN114603320B (zh) * 2022-03-28 2023-02-14 伊莱特能源装备股份有限公司 一种大型异形塔架法兰锻件制造方法

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DE1301297B (de) * 1964-09-02 1969-08-21 Ts Lab Obro Bki Plastycznej Vorrichtung fuer das Stauchen laenglicher Werkstuecke auf Pressen
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EP2484462A2 (fr) 2012-08-08
DE102011105244A1 (de) 2012-08-09
EP2484462A3 (fr) 2012-10-24

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