EP2853319B1 - Dispositif destiné au forgeage d'un bloc creux pré-percé - Google Patents

Dispositif destiné au forgeage d'un bloc creux pré-percé Download PDF

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Publication number
EP2853319B1
EP2853319B1 EP14183028.1A EP14183028A EP2853319B1 EP 2853319 B1 EP2853319 B1 EP 2853319B1 EP 14183028 A EP14183028 A EP 14183028A EP 2853319 B1 EP2853319 B1 EP 2853319B1
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EP
European Patent Office
Prior art keywords
forging
mandrel
carriage
clamping head
hollow block
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
EP14183028.1A
Other languages
German (de)
English (en)
Other versions
EP2853319A1 (fr
Inventor
Rupert Wieser
Robert Koppensteiner
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.)
GFM GmbH
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GFM GmbH
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Publication date
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Application filed by GFM GmbH filed Critical GFM GmbH
Publication of EP2853319A1 publication Critical patent/EP2853319A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
    • 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
    • B21J13/08—Accessories for handling work or tools
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • 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
    • B21J13/08—Accessories for handling work or tools
    • B21J13/085—Accessories for handling work or tools handling of tools
    • 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
    • B21J13/08—Accessories for handling work or tools
    • B21J13/10—Manipulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers

Definitions

  • the invention relates to a device for forging a hollow body from a pre-hollow block with radially driven to a forging axis forging tools, with a movable on a guide bed in the direction of the forging axis, collets for the hollow block having chuck and with a remote from the forging tools side arranged the clamping head, independently of this along the guide bed movable mandrel carriage, provided with a forging mandrel mandrel passes through the clamping head coaxial with the forging axis.
  • a device according to the preamble of claim 1 is made DE 102010014583 A1 known, for which the collet and the mandrel separate, to provide movable on a common guide along the machine bed carriages, of which the guide carriage for the collet via a spindle drive along the guide is driven, while the mandrel carriage with the guide carriage for the collet by another Spindle drive is connected.
  • the mandrel carriage can therefore be moved along with the guide carriage for the collet along the machine bed, but also adjusted over the spindle drive provided for this purpose with respect to the guide carriage for the collet.
  • the forging of a pre-punched hollow billet over a forging mandrel is, for economic reasons, especially for comparatively small lots used to be produced tubular workpieces.
  • the invention solves the problem set by the fact that the mandrel carriage has an axial actuator for the mandrel and tensile strength with the clamping head can be coupled.
  • the device can be used in a known manner for forging comparatively long tubular workpieces, resulting in a mandrel slide independently movable from the clamping head.
  • a mandrel slide independently movable from the clamping head.
  • the high-tensile coupling between the chuck and the mandrel carriage is an advantageous prerequisite for the forging of hollow bodies made of a material difficult to deform because the forces occurring between the chuck and the mandrel carriage can be removed directly via the clutch and do not burden the guide bed.
  • the axial movement of the forging mandrel with respect to the chucking head required for such a high-tensile coupling of the chuck head and mandrel carriage is ensured by the axial adjusting drive for the mandrel bar associated with the mandrel carriage.
  • the axial feed of the hollow body to be forged compared to the forging tools is achieved in a conventional manner via a drive of the clamping head.
  • the forging mandrel is also to rotate about its axis, wherein the executed during the idle stroke of the forging tools rotational steps in the sense of workpiece rotation on the collets or opposite can be performed.
  • the mandrel carriage need only have a corresponding rotary drive for the mandrel, which is driven accordingly.
  • the temperature load of the forging mandrel can be limited by suitable cooling measures.
  • the additional axial actuator for the mandrel bar also opens up the possibility to shift the forging mandrel axially relative to the forging tools, so that the heat input during forging-related pressing of the workpiece can be distributed to the forging mandrel over a greater length range of the forge mandrel.
  • the forging mandrel is moved in opposite directions to the forging tools.
  • a control device for controlling the axial adjusting drive and / or the rotary drive for the mandrel rod can be provided as a function of the temperature of the forging mandrel. If the forging mandrel has a minimum length corresponding to the travel range of the axial positioning drive, the result is a length which is favorable for an advantageous axial temperature distribution for the forging mandrel.
  • the illustrated apparatus for forging a hollow body from a pre-punched hollow block 1 has forging tools 2 which can be driven radially to a forging axis, to which a clamping head 3 and in mandrel slides 4 are arranged upstream.
  • the clamping head 3 and the mandrel carriage 4 are mounted displaceably on a common guide bed 5 and can be moved independently of each other via travel drives 6 and 7 along the common guide bed 5.
  • the travel drives 6, 7 may include, for example, in a rack 8 engaging drive pinion.
  • the mandrel carriage 4 is provided with a mandrel bar receptacle 9, which can be displaced axially by means of an actuator 10. As actuator 10 actuating cylinder 11 are indicated. To not only axially displace the mandrel 12 with the forging mandrel 13 with respect to the mandrel carriage 4, but also to be able to rotate in rotation steps around the mandrel axis, the correspondingly rotatably mounted mandrel rod receptacle 9 is connected to a rotary drive 14.
  • the chuck 3 is penetrated by the mandrel 12 in a guide opening 15, wherein the forging mandrel 13 projects axially beyond the chuck 3 and extends coaxially to the collets 16 of the chuck 3, with the help of the forged hollow block 1 is clamped forging.
  • the pre-hollow block can be made closed in the region of one end. However, it can be stretched in the area of its open end.
  • Fig. 1 can be removed, the clamping head 3 and the mandrel carriage 4 are held for clamping the held in a forging axis coaxial loading position, pre-hollow block 1 against the forging tools 2 out, the forging mandrel 13 is inserted into the opening of the hollow block 1 and the collets 16 the Hollow block capture, as is the Fig. 2 can be seen.
  • the tensioned in this way hollow block 1 can now in a forging position after the Fig. 3 be moved, in which the forging mandrel 13 with the aid of the mandrel carriage 4 between the forging tools 2 is advanced through the hollow block 1, as the Fig. 3 shows.
  • the mandrel carriage 4 is locked to the guide bed 5 via a locking device 17.
  • the hollow block 1 can thus be subjected via the chuck 3 for forging over the forging mandrel 13 a corresponding feed, wherein the axial feed via the drive 6, a rotary feed over the corresponding drivable collets 16 can be superimposed.
  • the axial actuating drive 10 for the mandrel bar 12 can be actuated via a control device, so that the forging mandrel 13 is displaced in the axial direction with respect to the forging tools 2.
  • This axial displacement of the forging mandrel 13 can be used to forge a hollow body set down with respect to its inner diameter when the forging mandrel 13 has correspondingly offset diameter ranges.
  • the displacement of the forging mandrel 13 relative to the forging tools 2 can also be used advantageously to reduce the temperature load of the forging mandrel 13, because the range of the transferred during the forging load through the forging tools 2 amount of heat are distributed over the mandrel length by the axial displacement of the forging mandrel 13 can.
  • Fig. 4 is the end of the forging process shown.
  • the forged from the pre-hollow block 1 hollow body 18 is released in a conventional manner by the collets 16 of the clamping head 3 to pull it from the opposite end between the forging tools 2 forging the hollow body end. It can be seen that the forging mandrel 13 via the axial actuator 10 of the mandrel carriage 4 with respect to its initial position according to the Fig. 3 was relocated accordingly.
  • Fig. 5 the position of the device for mandrel change is shown.
  • the forging mandrel 13 with the mandrel bar 12 is pulled from the side of the collets 16 forth from the mandrel rod holder 9 of the mandrel carriage 4 through the guide opening 15 of the chuck 3, the together for this purpose is displaced with the mandrel carriage 4 to the remote from the forging tools 2 end of the guide bed 5.
  • the shared in this way forging mandrel 13 can thus be changed together with the mandrel 12 and a new forging mandrel 12 are inserted with a mandrel in the reverse direction through the guide hole 15 of the clamping head 3 in the mandrel rod holder 9 of the mandrel carriage 4.
  • Fig. 6 can be removed, the clamping head 3 and the mandrel carriage 4 can be locked by a coupling device 19 tensile strength each other.
  • the locking can be done by bolts 20 which engage releasably in radial locking recesses 21, so that the clamping head 3 is mechanically connected to the mandrel carriage 4 to form a unit which receives axial forces between the collets 16 and the forging mandrel 13 without loading the guide bed 5.
  • hollow bodies can be forged, where high forming forces are required.
  • FIG. 7 and 8 For example, show the forging of a hollow body of a hard-to-form, pre-punched hollow block 1, wherein the assembly formed from the clamping head 3 and the mandrel carriage 4 is advanced against the forging tools 2 via the drive 6 of the clamping head 3.
  • the forging mandrel 13 therefore requires a length corresponding to the length of the hollow block 1 if the forging mandrel is not displaced counter to the forging advance of the hollow block via the setting drive.
  • the position is specified in which the clamping head 3 must release the hollow block 1 in order to forge the end of the hollow block 1 ready.

Landscapes

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

Claims (4)

  1. Dispositif destiné au forgeage d'un corps creux (18) à partir d'un bloc creux pré-percé (1) avec des outils de forgeage (2) pouvant être entrainés radialement par rapport à un axe de forgeage, avec une tête de serrage (3) comportant des pinces de serrage (16) pour le bloc creux (1), déplaçable dans la direction de l'axe de forgeage, sur un lit de guidage (5), et avec un chariot porte-mandrin (4), disposé sur le côté de la tête de serrage (3), opposée aux outils de forgeage (2) déplaçable de façon indépendante de celle-ci le long du lit de guidage (5) dont la tige à mandrin (12) munie d'un mandrin de forgeage (13) traverse la tête de serrage (3) coaxialement à l'axe de forgeage, caractérisé en ce que le chariot porte-mandrin (4) présente un dispositif d'actionnement (10) axial pour la tige à mandrin (12) et peut être couplé étroitement à la tête de serrage (3).
  2. Dispositif selon la revendication 1, caractérisé en ce que le chariot porte-mandrin (4) comporte un entraînement en rotation (14) pour la tige à mandrin (12).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'un dispositif de pilotage pour piloter le dispositif d'actionnement (10) axial et/ou l'entraînement en rotation (14) est prévu pour la tige à mandrin (12) en fonction de la température du mandrin de forgeage (13).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le mandrin de forgeage (13) présente une longueur minimum correspondant au trajet de réglage du dispositif d'actionnement (10) axial.
EP14183028.1A 2013-09-25 2014-09-01 Dispositif destiné au forgeage d'un bloc creux pré-percé Active EP2853319B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50617/2013A AT514894B1 (de) 2013-09-25 2013-09-25 Vorrichtung zum Schmieden eines Hohlkörpers aus einem vorgelochten Hohlblock

Publications (2)

Publication Number Publication Date
EP2853319A1 EP2853319A1 (fr) 2015-04-01
EP2853319B1 true EP2853319B1 (fr) 2017-02-22

Family

ID=51564431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14183028.1A Active EP2853319B1 (fr) 2013-09-25 2014-09-01 Dispositif destiné au forgeage d'un bloc creux pré-percé

Country Status (3)

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US (1) US9862012B2 (fr)
EP (1) EP2853319B1 (fr)
AT (1) AT514894B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008841A (zh) * 2017-06-05 2017-08-04 威海多晶钨钼科技有限公司 一种钼及其合金t型零部件的制造装置
CN111715831A (zh) * 2020-06-05 2020-09-29 成都先进金属材料产业技术研究院有限公司 一种含芯棒旋锻工艺中的芯棒不粘模装置和方法
EP4436729A1 (fr) * 2021-11-26 2024-10-02 SMS group GmbH Système de retenue d'une tige de mandrin dans un laminoir tubulaire et procédé de fonctionnement dudit système
CN114833296B (zh) * 2022-05-25 2023-07-25 江苏明越精密高温合金有限公司 一种管坯的制坯设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492211A1 (fr) 1990-12-22 1992-07-01 Walter Späth Procédé de pliage de profilés creux en métal et dispositif pour l'exécution du procédé
EP2218526A1 (fr) 2009-02-11 2010-08-18 SMS Meer GmbH Procédé et dispositif de fabrication de pièces usinées tubulaires à partir d'un bloc creux pré-percé
DE102010014583A1 (de) 2010-04-09 2011-10-13 Felss Gmbh Einrichtung einer Rundknetmaschine mit einer Werkstück-Halterung und einer Dornstangen-Halterung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE553623C (de) * 1930-05-21 1933-11-06 Leopold Tschulenk Pilgerrohrwalzwerk
AT305734B (de) * 1971-05-06 1973-03-12 Gfm Gesselschaft Fuer Fertigun Schmiedemaschine zum Innenprofilieren rohrförmiger Werkstücke
AT322329B (de) * 1973-12-04 1975-05-12 Gfm Fertigungstechnik Schmiedemaschinen zum herstellen insbesondere von schrotläufen
DE2636636B2 (de) * 1976-08-13 1978-07-13 Fritz Werner Industrie-Ausruestungen Gmbh, 6222 Geisenheim Verfahren und Rundknetmaschine zum Innenprofilieren rohrförmiger Werkstücke mit einseitiger Querschnittserweiterung des Innenprofiles
DE19523280C2 (de) 1995-06-27 2002-12-05 Gfm Gmbh Steyr Schmiedemaschine zum Innenprofilieren von rohrförmigen Werkstücken
AT501152B8 (de) * 2003-12-30 2007-02-15 Gfm Beteiligungs & Man Gmbh Verfahren und vorrichtung zum herstellen eines zylindrischen hohlkörpers aus einem rohling
RO127383A2 (ro) * 2010-09-03 2012-05-30 Mb Telecom Ltd S.R.L. Metodă şi sistem pentru fabricarea corpurilor cave şi profilate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492211A1 (fr) 1990-12-22 1992-07-01 Walter Späth Procédé de pliage de profilés creux en métal et dispositif pour l'exécution du procédé
EP2218526A1 (fr) 2009-02-11 2010-08-18 SMS Meer GmbH Procédé et dispositif de fabrication de pièces usinées tubulaires à partir d'un bloc creux pré-percé
DE102010014583A1 (de) 2010-04-09 2011-10-13 Felss Gmbh Einrichtung einer Rundknetmaschine mit einer Werkstück-Halterung und einer Dornstangen-Halterung

Also Published As

Publication number Publication date
AT514894B1 (de) 2016-04-15
EP2853319A1 (fr) 2015-04-01
US9862012B2 (en) 2018-01-09
US20150082846A1 (en) 2015-03-26
AT514894A1 (de) 2015-04-15

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