EP0467493B1 - Appareil de forgeage oscillant - Google Patents

Appareil de forgeage oscillant Download PDF

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Publication number
EP0467493B1
EP0467493B1 EP91250177A EP91250177A EP0467493B1 EP 0467493 B1 EP0467493 B1 EP 0467493B1 EP 91250177 A EP91250177 A EP 91250177A EP 91250177 A EP91250177 A EP 91250177A EP 0467493 B1 EP0467493 B1 EP 0467493B1
Authority
EP
European Patent Office
Prior art keywords
piston
swing
jaws
cylinder units
forging
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
EP91250177A
Other languages
German (de)
English (en)
Other versions
EP0467493A1 (fr
Inventor
Ewald Feuerstacke
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT91250177T priority Critical patent/ATE102515T1/de
Publication of EP0467493A1 publication Critical patent/EP0467493A1/fr
Application granted granted Critical
Publication of EP0467493B1 publication Critical patent/EP0467493B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/18—Forging machines working with die jaws, e.g. pivoted, movable laterally of the forging or pressing direction, e.g. for swaging

Definitions

  • the invention relates to a device for vibratory forging acc. the preamble of claim 1.
  • DE-PS 1 171 245 discloses a stretch forging machine with oscillating jaws acting in opposite directions on a workpiece.
  • the vibrating jaws can be driven symmetrically by crank or eccentric drives.
  • the drive takes place via two drive links per oscillating jaw, which form a quadrilateral joint, so that the oscillating jaws roll on the workpiece in the feed direction during their effective moving part.
  • a third drive link for each vibrating jaw causes the vibrating jaw and the workpiece to be advanced as well as the return stroke movement of the vibrating jaw. By shifting the suspension of the third link, the extent of the feed and return movements can be changed.
  • the movement of the vibrating jaws can be adjusted by changing the angular position, the eccentricity and the effective length of the eccentrics or cranks.
  • crank or eccentric drive proves to be disadvantageous since the change in the path of movement of the oscillating jaws is limited by the adjustment options of the cranks or eccentric.
  • the crank or eccentric drives with their drive links significantly increase the size of the forging device.
  • the play of the large number of joints negatively affects the forming result.
  • a vibratory forging machine is known from US-A-1 928 741, the vibrating jaws being drivable by piston-cylinder units.
  • the invention has for its object to provide a device for vibratory forging with a high degree of reduction and small size, which allows a freely selectable adjustment of the path of movement of the vibrating jaws.
  • the arrangement of the piston-cylinder units designed as hydraulic cylinders between the oscillating jaws and in addition to the passage gap achieves a particularly space-saving design of the oscillating forging device.
  • the use of hydraulic cylinders in connection with a computer-aided control enables a freely selectable setting of the movement paths of the vibrating jaws forming the passage gap for the forged material.
  • the arrangement of the piston-cylinder unit with a clamping function between the other piston-cylinder units results in a minimum of stroke with oscillating jaws rolling away. This results in a low power requirement for the cylinder.
  • the design of the vibratory forging device with a travel drive mounted on a guide rail enables direct hot forming (forging material temperature about 1000 ° C-1200 ° C) of the emerging flat product without applying disruptive forces in the direction of the resulting strand or spray material, especially in continuous casting plants or in devices for spray compacting.
  • the vibratory forging device is particularly suitable for slowly emerging flat products at speeds of around 2-6 m / min and achieves degrees of reduction of at least 60%.
  • the drive of the vibrating jaws in connection with the control enables the forming tools to be rolled in and against the direction of the forging in one work cycle. This is particularly advantageous if the forming tools are designed with circular-arc-shaped contours.
  • the rolling motion of the oscillating jaws is particularly advantageously supported by the rolling plates arranged laterally on the oscillating jaws and engaging with one another via a bolt and an elongated hole.
  • FIG. 1 shows a side view of the vibratory forging device with two vibrating jaws 1, 1 'arranged approximately mirror-image to the direction of passage d.
  • two piston-cylinder units 5, 6 are provided on both sides for guiding the movement sequence of the oscillating jaws 1, 1 ' and a piston-cylinder unit 7 with a clamping function.
  • the piston-cylinder units 5, 6 are articulated at the ends of their piston rods 8, 9 to the tool carrier 2 and via their cylinder housings 10, 11 to the tool carrier 2 '.
  • the articulation points of the piston-cylinder units 5, 6 are, seen in the direction of passage d, at the front and rear of the tool carriers 2, 2 '.
  • the piston cylinder 7 with clamping function is articulated with its piston rod 12 on the tool carrier 2 'and with its cylinder housing 13 on the tool carrier 2.
  • Rolling plates 14, 14 ' are arranged on the side of the tool carriers 2, 2' in addition to and parallel to the forming tools 3, 3 '.
  • the rolling plates 14, 14 ' have the shape of right-angled triangles, the right-angled corners 15, 15' pointing to the passage gap 4 and overlapping. In the overlap area, the rolling plates 14, 14 'are connected in the area of their corners 15, 15' via a bolt 16.
  • the bolt 16 arranged on the sheet 14 engages in an elongated hole 17 running perpendicular to the tool carrier 2 in the sheet 14 '.
  • the clamping direction k of the piston-cylinder unit 7 with the clamping function cuts the passage gap 4 in the region of the bolt 16.
  • FIG. 2 shows a side view of the vibratory forging device with the driving device.
  • the piston-cylinder units 5, 6, 7 and the rolling plates 14, 14 ' are not shown.
  • the driving device essentially consists of a holding element 18, which is arranged laterally on the tool carriers 2, 2 ′ and is designed as a sheet metal.
  • the holding element 18 is located in the articulation points 22 of the piston-cylinder unit 7 Clamping function connected to tool carriers 2, 2 '.
  • the connection to the tool carrier 2 is again via a bolt / slot connection as described in FIG. 1.
  • the holding element 18 is provided with rollers 19 between the tool carriers 2, 2 '.
  • the vibratory forging device can be moved on a guide rail 20 via the rollers 19. In the middle, the holding element 18 is connected to a reset cylinder 21 which is fixedly arranged on the guide rail 20.
  • the cycle time of the movement sequence just described is about 1-2 s. Since the guide cylinder has a position control and the Clamp cylinders are connected to a computer control via a pressure control, the movement sequence can also be changed as follows. Swinging back into the starting position without contacting the forged goods can be replaced by moving the vibrating jaws together again and then rolling them in the direction of travel. This is particularly advantageous if the contours of the vibrating jaws are circular arcs.
  • the computer control via the cylinders allows the gap-forming motion sequence of the vibrating jaws to be adapted to a wide variety of rolling conditions (rolling temperature, type of material, degree of reduction, etc.).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • General Preparation And Processing Of Foods (AREA)

Claims (6)

  1. Dispositif pour le forgeage à vibrations, en particulier pour le forgeage à chaud de produits métalliques plats, comportant des mâchoires oscillantes (1, 1'), opposées et formant une fente (4) de passage pour le produit, des surfaces de forgeage cintrées de façon concave, et des moyens d'entraînement pour les mâchoires oscillantes, les moyens d'entraînement étant des vérins (5,6,7),
    caractérisé en ce que, par l'intermédiaire de chaque vérin (5,6,7), les deux mâchoires oscillantes (1,1') sont reliées ensemble de façon articulée, et en ce qu'un élément de maintien (18), indépendant des moyens d'entraînement, est agencé sur les mâchoires oscillantes (1, 1').
  2. Dispositif pour le forgeage à vibrations selon la revendication 1,
    caractérisé en ce que des vérins (5,6) pour guider le déplacement sont agencés, latéralement à la direction de passage (d) et dans les coins des mâchoires oscillantes (1,1'), et en ce que des vérins (7) présentant une fonction de serrage sont agencés, à l'extérieur de la fente de passage (4), entre les vérins (5,6).
  3. Dispositif pour le forgeage à vibrations selon l'une des revendications 1 ou 2,
    caractérisé en ce que les vérins (7) présentant une fonction de serrage sont agencés entre les vérins (5,6), de sorte que leur course de piston est minimale pendant le déplacement des mâchoires oscillantes (1, 1').
  4. Dispositif pour le forgeage à vibrations selon l'une des revendications 1 à 3,
    caractérisé en ce que les mâchoires oscillantes (1, 1') sont constituées de porte-outils (2, 2') et d'outils de forgeage (3, 3') qui sont fixés sur ces derniers, et en ce que les vérins (5, 6) et les vérins (7) présentant une fonction de serrage sont reliés aux porte-outils (2, 2'), à chaque fois, d'une part par l'intermédiaire de leurs tiges de piston (8, 9, 12) et, d'autre part, par l'intermédiaire de leurs boîtiers de vérin (10, 11, 13).
  5. Dispositif pour le forgeage à vibrations selon l'une des revendications 1 à 4,
    caractérisé en ce que, en direction de passage (d), des deux côtés des mâchoires oscillantes (1, 1'), des tôles dérouleuses (14) sont agencées de façon parallèle, et en ce que les tôles dérouleuses (14, 14') sont reliées ensemble, à la hauteur de la fente de passage (4), par l'intermédiaire d'un boulon (16) et d'un trou oblong (17).
  6. Dispositif pour le forgeage à vibrations selon l'une des revendications 1 à 5,
    caractérisé en ce que l'élément de maintien (18) est relié, de façon articulée, aux porte-outils (2, 2'), au niveau des points d'articulation (22) du vérin (7) présentant une fonction de serrage, en ce que la tôle (18) est munie de rouleaux (19) entre les porte-outils (2,2'), et en ce que les rouleaux (19) peuvent se déplacer sur un rail de guidage (20).
EP91250177A 1990-07-12 1991-07-03 Appareil de forgeage oscillant Expired - Lifetime EP0467493B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91250177T ATE102515T1 (de) 1990-07-12 1991-07-03 Einrichtung zum schwingschmieden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4022261 1990-07-12
DE4022261A DE4022261C1 (fr) 1990-07-12 1990-07-12

Publications (2)

Publication Number Publication Date
EP0467493A1 EP0467493A1 (fr) 1992-01-22
EP0467493B1 true EP0467493B1 (fr) 1994-03-09

Family

ID=6410186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250177A Expired - Lifetime EP0467493B1 (fr) 1990-07-12 1991-07-03 Appareil de forgeage oscillant

Country Status (3)

Country Link
EP (1) EP0467493B1 (fr)
AT (1) ATE102515T1 (fr)
DE (2) DE4022261C1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928741A (en) * 1930-05-20 1933-10-03 Tschulenk Leopold Rolling mill of the pilgrim-step type for the manufacture of metallic tubes
DE1007601B (de) * 1954-04-03 1957-05-02 Beche & Grohs Ges Mit Beschrae Gesenkschmiedepresse
DE1014824B (de) * 1954-11-20 1957-08-29 Beche & Grohs Ges Mit Beschrae Gesenkschmiedepresse
FR2081297B2 (fr) * 1970-03-20 1974-05-03 Cuq Pierre
SU904851A1 (ru) * 1977-11-01 1982-02-15 Челябинский Политехнический Институт Им.Ленинского Комсомола Прокатно-ковочный стан
DE3817680A1 (de) * 1988-05-25 1989-12-07 Hilti Ag Umformungsverfahren fuer werkzeuge

Also Published As

Publication number Publication date
EP0467493A1 (fr) 1992-01-22
ATE102515T1 (de) 1994-03-15
DE4022261C1 (fr) 1991-11-21
DE59101144D1 (de) 1994-04-14

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