EP1053801A2 - Dispositif de fermeture hydraulique pour l'extrusion latérale de pièces - Google Patents

Dispositif de fermeture hydraulique pour l'extrusion latérale de pièces Download PDF

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Publication number
EP1053801A2
EP1053801A2 EP00109492A EP00109492A EP1053801A2 EP 1053801 A2 EP1053801 A2 EP 1053801A2 EP 00109492 A EP00109492 A EP 00109492A EP 00109492 A EP00109492 A EP 00109492A EP 1053801 A2 EP1053801 A2 EP 1053801A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
die
piston
hydraulic cylinder
press ram
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.)
Granted
Application number
EP00109492A
Other languages
German (de)
English (en)
Other versions
EP1053801A3 (fr
EP1053801B1 (fr
Inventor
Thorsten Dipl.-Ing. Kretz
Klaus Prof. Dr.-Ing. Siegert
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.)
Fgu Forschungsgesellschaft Umformtechnik Mbh
Original Assignee
Fgu Forschungsgesellschaft Umformtechnik Mbh
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 Fgu Forschungsgesellschaft Umformtechnik Mbh filed Critical Fgu Forschungsgesellschaft Umformtechnik Mbh
Publication of EP1053801A2 publication Critical patent/EP1053801A2/fr
Publication of EP1053801A3 publication Critical patent/EP1053801A3/fr
Application granted granted Critical
Publication of EP1053801B1 publication Critical patent/EP1053801B1/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
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • 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
    • B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure

Definitions

  • the invention relates to a hydraulic locking device for cross extrusion of workpieces, with two relative mutually movable and closable Die halves and two at equal speeds movable relative to the closed die halves Press rams, with a first hydraulic piston on which the first die half is arranged in an axial movable first hydraulic cylinder on which the first Press ram is arranged, and a second Hydraulic pistons in a fixed second Store the pressure medium cylinder so that it can move.
  • a known device for producing a Workpiece by extrusion according to DE-OS 28 19 167 has a fixed lower support plate and upper support plate on a vertically movable press ram is arranged. Are located on the carrier plates opposing stamp, between which a Blank can be picked up. Store on the stamps sliding ring pistons, those of carrier plate-bound Cylinders are surrounded. Pressure chambers formed in it lead to diaphragm accumulators in which oil is compressed Gas is under pressure. Are on the ring piston Arranged die halves.
  • the upper one Carrier plate by means of a press ram without force first lowered until the stamp on the Face of the blank and the matrices together issue.
  • the upper carrier plate then moves under force further down so that the blank is axially compressed and radially into the cavity formed by the matrices is ousted.
  • the ring pistons displace this pressure medium located in the pressure chambers in the Membrane accumulator.
  • everyone in the same direction moving piston is halfway there Carrier plate back at half their speed. in the The result is a symmetrically pressed workpiece.
  • a first disadvantage is that the vertical Location of the removal level from that of the loading level differs. In addition to a large Tappet travel also requires a lot of energy.
  • the separate setting of the Closing force which has a negative impact on reliability.
  • the invention has for its object a to provide generic device for extrusion, which avoids the disadvantages mentioned above.
  • the hydraulic locking device for cross extrusion of workpieces has two relatively movable and lockable die halves and two at equal speeds relative to the closed ones Die halves movable ram, with a first Hydraulic piston on which the first die half is arranged is in an axially movable first hydraulic cylinder which the first stamp is arranged, and a second Hydraulic pistons in a fixed second Mount the hydraulic cylinder so that it can move.
  • the second die half is fixed in space, during the second press ram attached to the second hydraulic piston is, which in cross extrusion by one of the first Hydraulic piston displaceable pressure medium can be acted upon is.
  • Both hydraulic pistons have the same piston surfaces.
  • the first hydraulic cylinder is attached to a press ram second die arranged on the second hydraulic cylinder. Both hydraulic cylinders are closed via a pressure line connected to a pressure system that can be fed with pressure medium.
  • the invention is based on a Embodiment explained in more detail.
  • the one in the drawing shown device has a vertically movable upper tool half 2 and a fixed lower one Tool half 4 on.
  • the core of the upper tool half 2 forms one Pressure cylinder 6, one as a support plate 8 trained upper end, one of the Support plate 8 downwardly extending jacket 10 and a ring shoulder extending inwards at the lower end Owns 12.
  • A extends in the cylinder axis A.
  • the support plate 8 arranged stamp carrier 14 on which a Ring piston 16 is slidably guided. Between the Support plate 8 and the lying on the annular shoulder 12 Annular piston 16, a pressure chamber 18 is formed.
  • a down Directed stamp 20 At the free underside of the stamp carrier 12 is a down Directed stamp 20 arranged.
  • At the bottom of the Ring piston 16 sits an annular upper die half 22.
  • the support plate 8 is on the top with a vertically movable press ram 24 connected.
  • the core of the lower tool half 4 forms one Pressure cylinder 26, one as a support plate 28 trained lower end, one of the Support plate 28 upwardly extending jacket 30 and a perforated upper end 32 has.
  • Cylinder axis B which is aligned with cylinder axis A, extends a arranged on the support plate 28 Ejector cylinder 34, on which a downward open Pot-shaped piston 36 is slidably guided.
  • a pressure chamber 38 trained between the support plate 28 and the annular piston 36 .
  • Stamp carrier 38 arranged one up directed stamp 40 carries. Coaxial to the opening of the upper end face 32 carries an annular Half of the die 42.
  • the pressure chambers 18 and 38 of the two hydraulic cylinders 6 and 26 are connected by a pressure line 44 connected and by a common pressure source 46 am Start with before starting the first use of the device Pressure medium. Then the hydraulic works Locking device as a self-contained system and must can no longer be supplied with pressure medium. Between the Stamp 40 of the lower tool half 4 and the stamp of upper tool half 2 is a cylindrical blank 48 added.
  • the mode of action is as follows:
  • the upper tool half 2 For cross extrusion of the inserted workpiece 48 the upper tool half 2 through the press ram 24 after drove down, so that the stamp 20 to the first Workpiece 48 and the upper die half 22 to the lower Place die half 42.
  • Tool 2 continues to follow below, the upper punch 20 presses the workpiece 48 against the lower punch 40, while the fixed lower one Die half 42 the upper die half 22 from below presses on the annular piston 16 so that the pressure chamber 18th downsized, making part of what is inside Pressure medium via the pressure line 44 into the pressure space 38 of the pressure medium cylinder 26 is displaced. Thereby again the lower punch 40 moves with the same Speed up with which the upper stamp 20 moved down.
  • the invention was a hydraulic Closing device created at the same Loading and unloading level by a short Ram travel, low energy consumption and safe closing is marked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
EP00109492A 1999-05-18 2000-05-04 Dispositif de fermeture hydraulique pour l'extrusion latérale de pièces Expired - Lifetime EP1053801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19922659A DE19922659B4 (de) 1999-05-18 1999-05-18 Hydraulische Schließvorrichtung zum Querfließpressen von Werkstücken
DE19922659 1999-05-18

Publications (3)

Publication Number Publication Date
EP1053801A2 true EP1053801A2 (fr) 2000-11-22
EP1053801A3 EP1053801A3 (fr) 2002-05-15
EP1053801B1 EP1053801B1 (fr) 2004-03-03

Family

ID=7908325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109492A Expired - Lifetime EP1053801B1 (fr) 1999-05-18 2000-05-04 Dispositif de fermeture hydraulique pour l'extrusion latérale de pièces

Country Status (4)

Country Link
EP (1) EP1053801B1 (fr)
AT (1) ATE260721T1 (fr)
BR (1) BR0003064A (fr)
DE (2) DE19922659B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112935167A (zh) * 2021-03-05 2021-06-11 程桂兰 一种电子窑炉送料设备及其承烧板

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10123745C2 (de) * 2001-05-11 2003-07-03 Hatebur Umformmaschinen Ag Rei Hydraulisch-mechanische Schließvorrichtung, vorzugsweise zum Querfließpressen
DE10246940C5 (de) * 2002-10-08 2008-07-03 Thyssenkrupp Presta Ag Vorrichtung zum Querfließpressen von Werkstücken und Verfahren zum Betreiben einer derartigen Vorrichtung
DE102004038292B3 (de) * 2004-08-03 2006-03-30 Hatebur Umformmaschinen Ag Fluidspeichereinrichtung zur dosierten Zufuhr und Abfuhr eines Betätigungsfluids

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH617368A5 (en) * 1977-05-06 1980-05-30 Supervis Ets Method for the production of a workpiece by extrusion, application of the method and an apparatus for carrying out the method
JPH0685956B2 (ja) * 1987-07-06 1994-11-02 アイダエンジニアリング株式会社 閉塞鍛造装置
JPH0275433A (ja) * 1988-09-13 1990-03-15 Mitsubishi Heavy Ind Ltd 閉塞鍛造用復動ダイセット

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112935167A (zh) * 2021-03-05 2021-06-11 程桂兰 一种电子窑炉送料设备及其承烧板

Also Published As

Publication number Publication date
DE19922659B4 (de) 2005-02-10
ATE260721T1 (de) 2004-03-15
DE19922659A1 (de) 2000-12-07
EP1053801A3 (fr) 2002-05-15
DE50005478D1 (de) 2004-04-08
BR0003064A (pt) 2001-01-30
EP1053801B1 (fr) 2004-03-03

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