EP0236589A2 - Machine de forgeage hydraulique - Google Patents

Machine de forgeage hydraulique Download PDF

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Publication number
EP0236589A2
EP0236589A2 EP86201892A EP86201892A EP0236589A2 EP 0236589 A2 EP0236589 A2 EP 0236589A2 EP 86201892 A EP86201892 A EP 86201892A EP 86201892 A EP86201892 A EP 86201892A EP 0236589 A2 EP0236589 A2 EP 0236589A2
Authority
EP
European Patent Office
Prior art keywords
forging machine
working cylinders
pump
piston
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.)
Granted
Application number
EP86201892A
Other languages
German (de)
English (en)
Other versions
EP0236589A3 (en
EP0236589B1 (fr
Inventor
Hans Joachim Pahnke
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.)
Pahnke Engineering & Co KG GmbH
Original Assignee
Pahnke Engineering & Co KG GmbH
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 Pahnke Engineering & Co KG GmbH filed Critical Pahnke Engineering & Co KG GmbH
Priority to AT86201892T priority Critical patent/ATE74299T1/de
Publication of EP0236589A2 publication Critical patent/EP0236589A2/fr
Publication of EP0236589A3 publication Critical patent/EP0236589A3/de
Application granted granted Critical
Publication of EP0236589B1 publication Critical patent/EP0236589B1/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
    • B21J7/14—Forging machines working with several hammers
    • 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
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/28—Drives for hammers; Transmission means therefor for power hammers operated by hydraulic or liquid pressure
    • 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
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/46—Control devices specially adapted to forging hammers, not restricted to one of the preceding subgroups

Definitions

  • the invention relates to a hydraulically driven forging machine with four star-shaped working cylinders, which are connected via pipes to a piston pump, which are mechanically or electrically synchronously driven to synchronize the working pistons of the forging machine.
  • a crank drive device DE-PS 23 06 566
  • four drive pistons are driven by a single crankshaft and a single drive motor.
  • leakage oil losses require special measures to ensure absolute synchronization of the working pistons at least during the working stroke of the working piston of the forging machine via a stroke position correction (DE-PS 22 07 717 and the literature cited therein).
  • the length of the pipeline itself already plays a significant role in the designs with spatial distance between the driving apparatus and the forging machine which have become known, because a pipeline can take up ten times the volume of a working piston.
  • the invention has therefore set itself the task of minimizing the stroke loss caused by the length of pipelines between the driving apparatus or piston pump and the associated working cylinder of the forging machine, so that the requirements for stroke position correction (also due to leakage losses) are reduced.
  • the four piston pumps are arranged as individual pumps distributed around the forging machine and are designed in a standing design such that all pump-side pipe connections are in the horizontal center plane of the forging machine. This creates the prerequisite for designing all the pipelines leading to the working cylinders of the forging machine with the same length and as short as possible, simply by assigning the individual pumps to each other, even though they are set up on a common foundation.
  • the star-shaped distribution of the four working cylinders of a forging machine can also be such that the working cylinders are arranged in pairs in a vertical and in a horizontal plane
  • an arrangement is predominant in which the working cylinders are arranged in pairs opposite one another in two crossing inclined planes .
  • the invention provides that the piston pump are arranged in pairs in the vicinity of two working cylinders of the forging machine lying one above the other in the vertical projection. From one piston pump of a pair of pumps, a pipeline then goes diagonally upwards to the top horizontal working cylinder, whereas the pipe for the lower working cylinder runs obliquely downwards from the other piston pump.
  • the two pipes are of the same length because the pump-side pipe connections are in the horizontal center plane of the forging machine.
  • the invention provides a common drive motor in the vertical center plane of the forging machine, which runs transversely to the forging axis and which is followed by a power-branching transmission with two output shafts located at a horizontal distance from one another, to which two piston pumps are connected with the interposition of intermediate shafts.
  • the forging machine shown in Fig. 1 comprises four working cylinders 1, 2, 3 and 4, which are arranged in pairs opposite each other in two intersecting inclined planes and act with their pistons on pivoted forging saddles 1a, 2a, 3a and 4a. From the top view of Fig. 2 it can be seen that two working cylinders 1, 2 and 3, 2 in the vertical projec tion lie one above the other. Of the four piston pumps 5, 6, 7 and 8, which are constructed in a standing design, the piston pumps 5 and 8 are set up in close proximity to the working cylinders 1, 2 (FIG. 2), whereas the piston pumps 6 and 7 are assigned to the two working cylinders 3, 4 in terms of position are. As can best be seen from FIG. 1, the piston pumps are connected to the working cylinders 1 to 4 via pipes 9, 10, 11 and 12, the pipes starting from pump-side pipe connections 13, 14, 15 and 16.
  • Fig. 3 shows that the piston pumps 5 to 8 are placed on a common foundation F so deep that their overhead pipe connections 13, 14 and 15, 16 are in the horizontal center plane M of the forging machine.
  • the pipelines 9, 10, 11 and 12 leading to the working cylinders 1 to 4 are shown as straight lines and make it clear that these pipelines have the same length and are as short as possible because of the symmetrical arrangement of the working cylinders to the pump-side pipeline connections .
  • the mechanically synchronized drive for all piston pumps consists of a common drive motor 18 with a power-branching gear 17, which according to FIG. 1 consists of a central spur gear 19, to which an intermediate spur gear 20 and an output spur gear 21 adjoins to the right, which has an output shaft 22 which drives the piston pump 6 and is extended to an intermediate shaft 23 which drives the piston pump 5.
  • the central spur gear 19 is connected to an intermediate spur gear 24 and this to an output spur gear 25, from which the piston pumps 7 and 8 are driven via the output shaft 26 and the intermediate shaft 27.
  • the drive motor 18 is arranged in the perpendicular center plane S, which extends transversely to the forging axis, so that via the power-branching transmission 17 with the same spur gears on both sides, the required distance between the two output shafts 22, 26 and the intermediate shafts 23, 27 can be set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Press Drives And Press Lines (AREA)
  • Formation And Processing Of Food Products (AREA)
EP86201892A 1986-03-08 1986-10-29 Machine de forgeage hydraulique Expired - Lifetime EP0236589B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86201892T ATE74299T1 (de) 1986-03-08 1986-10-29 Hydraulisch angetriebene schmiedemaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3607737 1986-03-08
DE3607737A DE3607737C1 (de) 1986-03-08 1986-03-08 Hydraulisch angetriebene Schmiedemaschine

Publications (3)

Publication Number Publication Date
EP0236589A2 true EP0236589A2 (fr) 1987-09-16
EP0236589A3 EP0236589A3 (en) 1989-03-15
EP0236589B1 EP0236589B1 (fr) 1992-04-01

Family

ID=6295874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201892A Expired - Lifetime EP0236589B1 (fr) 1986-03-08 1986-10-29 Machine de forgeage hydraulique

Country Status (6)

Country Link
US (1) US4745793A (fr)
EP (1) EP0236589B1 (fr)
JP (1) JPS62224439A (fr)
AT (1) ATE74299T1 (fr)
DE (1) DE3607737C1 (fr)
ES (1) ES2030387T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323607A2 (fr) * 1988-01-07 1989-07-12 Pahnke Engineering GmbH & Co. KG Machine à forger en long pour forger des barres circulaires ou des barres à angles vifs
EP0432516A1 (fr) * 1989-12-13 1991-06-19 DANIELI & C. OFFICINE MECCANICHE S.p.A. Commande hydraulique pour presses de forgeage
EP0829319A2 (fr) * 1996-09-17 1998-03-18 Gfm Holding Ag Machine à forger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232728C2 (de) * 1992-09-30 1998-01-29 Pahnke Eng Gmbh & Co Kg Umformmaschine mit Presszylinder mit zwei zugeordneten Kolbenpumpen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030471A1 (de) * 1969-06-27 1971-01-07 Gesellschaft fur Fertigungstechnik u Maschinenbau GmbH Steyr (Osterreich) Schmiedemaschine
FR2072109A1 (fr) * 1969-12-30 1971-09-24 Gfm Fertigungstechnik
FR2071955A7 (en) * 1969-12-20 1971-09-24 Demag Hydraulik Gmbh Four ram hydraulic hot forging machine
GB1302095A (fr) * 1969-04-05 1973-01-04
DE2207717B2 (fr) * 1972-02-18 1975-02-13 Maschinenfabrik Sack Gmbh, 4000 Duesseldorf

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL155685B (nl) * 1972-07-21 1978-01-16 Philips Nv Gasontladingslaser en werkwijze voor het vervaardigen daarvan.
DE2306566C2 (de) * 1973-02-10 1983-11-17 Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf Hydraulischer Antrieb für Schmiedemaschinen
JPS59202134A (ja) * 1983-05-02 1984-11-15 Hitachi Ltd 高速鍛造機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1302095A (fr) * 1969-04-05 1973-01-04
DE2030471A1 (de) * 1969-06-27 1971-01-07 Gesellschaft fur Fertigungstechnik u Maschinenbau GmbH Steyr (Osterreich) Schmiedemaschine
FR2071955A7 (en) * 1969-12-20 1971-09-24 Demag Hydraulik Gmbh Four ram hydraulic hot forging machine
FR2072109A1 (fr) * 1969-12-30 1971-09-24 Gfm Fertigungstechnik
DE2207717B2 (fr) * 1972-02-18 1975-02-13 Maschinenfabrik Sack Gmbh, 4000 Duesseldorf

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323607A2 (fr) * 1988-01-07 1989-07-12 Pahnke Engineering GmbH & Co. KG Machine à forger en long pour forger des barres circulaires ou des barres à angles vifs
EP0323607A3 (en) * 1988-01-07 1989-11-29 Pahnke Engineering Gmbh & Co. Kg Longitudinal forging machine for forging round or sharp-edged bars
US5000026A (en) * 1988-01-07 1991-03-19 Pahnke Engineering Gmbh & Co. Kg. Long forging machine for the forging of round or sharp-edged bars
EP0432516A1 (fr) * 1989-12-13 1991-06-19 DANIELI & C. OFFICINE MECCANICHE S.p.A. Commande hydraulique pour presses de forgeage
US5078002A (en) * 1989-12-13 1992-01-07 Danieli & C. Officine Meccaniche S.P.A. Hydraulic assembly to actuate forging presses
EP0829319A2 (fr) * 1996-09-17 1998-03-18 Gfm Holding Ag Machine à forger
US5894755A (en) * 1996-09-17 1999-04-20 Gfm Holding Aktiengesellschaft Forging machine
EP0829319A3 (fr) * 1996-09-17 2000-06-07 Gfm Holding Ag Machine à forger

Also Published As

Publication number Publication date
DE3607737C1 (de) 1987-10-29
ATE74299T1 (de) 1992-04-15
EP0236589A3 (en) 1989-03-15
JPS62224439A (ja) 1987-10-02
US4745793A (en) 1988-05-24
JPH0342975B2 (fr) 1991-06-28
ES2030387T3 (es) 1992-11-01
EP0236589B1 (fr) 1992-04-01

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