EP1093871A2 - Machine à forger - Google Patents

Machine à forger Download PDF

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Publication number
EP1093871A2
EP1093871A2 EP00890231A EP00890231A EP1093871A2 EP 1093871 A2 EP1093871 A2 EP 1093871A2 EP 00890231 A EP00890231 A EP 00890231A EP 00890231 A EP00890231 A EP 00890231A EP 1093871 A2 EP1093871 A2 EP 1093871A2
Authority
EP
European Patent Office
Prior art keywords
forging
drive
hydraulic
cylinder
mechanical
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.)
Withdrawn
Application number
EP00890231A
Other languages
German (de)
English (en)
Other versions
EP1093871A3 (fr
Inventor
Gottfried Dipl.-Ing. Blaimschein
Alfred Ing. Seeber
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 Beteiligungs und Management GmbH and Co KG
Original Assignee
GFM Beteiligungs und Management GmbH and Co KG
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 GFM Beteiligungs und Management GmbH and Co KG filed Critical GFM Beteiligungs und Management GmbH and Co KG
Publication of EP1093871A2 publication Critical patent/EP1093871A2/fr
Publication of EP1093871A3 publication Critical patent/EP1093871A3/fr
Withdrawn legal-status Critical Current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
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/12—Drives for forging presses 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
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers

Definitions

  • the invention relates to a forging machine with at least two counteracting, one in a machine frame and one Forging dies with mechanical lifting drive, which consist of two parts, an upper part on the drive side and a lower part on the tool side and between the upper part and that by means of a compression spring against the upper part pressurizable lower part connected to a hydraulic system Pick up hydraulic pads.
  • Such forging machines are for example from AT 404.440 B. or the AT 404.441 B known, the hydraulic cushion together with the associated hydraulic system on the one hand for stroke frequency control of the mechanical Lift drive for the forging stamp and on the other hand for stroke position adjustment the forge stamp is used.
  • the mechanical linear actuator of the Forging stamps continue to determine the lifting speed of the individual Stroke movements and thus the achievable rate of deformation at Forging, so the use of these forging machines on the implementation limited by forging processes with higher deformation speeds is. Carrying out forging processes with low deformation speeds or extremely slow deformation speeds previously reserved for forging machines with hydraulic lifting drives.
  • the invention is therefore based on the object of a forging machine to create the type described above, which is without affecting the
  • the advantages associated with the mechanical linear actuator are also perfect Forging workpieces with any slow speed of deformation is suitable.
  • the invention solves this problem in that the hydraulic system as additional stroke drive is designed for the forging stamp, via which at stopped or inactive mechanical lifting drive by applying hydraulic fluid to the hydraulic cushion, the lower part of each Forging stamp in the sense of a lifting movement independent of the upper part is drivable.
  • the hydraulic cushion can in the usual way as a fixed drive connection between the upper and lower part the forging stamp serve, whereby a forging machine with mechanical
  • the stroke drive for its forging dies gives all the advantages this mechanical linear actuator can be used, for example forging with a high stroke frequency and fast stroke speed or Deformation speed allowed.
  • a workpiece should now be under low deformation speed are forged, is only that Use hydraulic system as an additional linear actuator, so that by appropriate Hydraulic fluid loading of the hydraulic pads between the upper and Lower part of the forging stamp these hydraulic pads their function as rigid Losing the drive connection and becoming the active drive element itself the lower part of the forging stamp each has a lifting movement that is independent of the upper part allowed to impose.
  • Covers the drive train of the mechanical linear actuator for the Forge stamp a clutch and a brake can be used for the additional hydraulic linear actuator the mechanical linear actuator for the forge stamp by uncoupling the drive motor and inserting it the brake can be stopped in a structurally simple manner.
  • Eccentric drives are usually provided as mechanical lifting drives, in which the upper part of the forging stamp over one on the eccentric rotatable sliding block of a stroke movement dependent on the eccentric rotation is subjected.
  • Each forged stamp is a piston-loaded one Compensating cylinder with a compensating line controlled by a switching valve connected to the hydraulic cushion of the associated forging punch Assigned cylinder space, the cylinder space to the hydraulic cushion volume has adapted volume and which is fixed relative to the machine frame supported piston or cylinder part of the compensating cylinder can be moved guided cylinder or piston part at the point of attack of the upper part of the associated forging stamp diametrically opposite point on the sliding block attacks the respective eccentric drive, the eccentric drive can Switching the compensation cylinder to the corresponding hydraulic cushion with regard to make the lifting movement of the forging dies ineffective, without having to brake the eccentric drive as a whole, because the opposite hydraulic pad or compensating cylinder pressurized above the sliding block for an exchange of hydraulic medium between the interconnected Cylinder rooms or hydraulic cushions lead and thus the eccentric-dependent
  • the compensating line To be used in forging machines with a mechanical lifting drive, the compensating line must be connected via a lockable, upstream of the hydraulic cushion in front of the switching valve branch line can be connected to an expansion tank.
  • a Locking the compensation line is the hydraulic fluid compensation between the compensation cylinder and hydraulic pads prevented, which makes the hydraulic pads as a common drive connection between the upper and lower part of the forging die serves.
  • the cylinder chamber of the compensating cylinder is via the secondary line connected to an expansion tank so that the expansion cylinder can follow the sliding block movement.
  • a forging machine 1 has at least two counteracting eccentric forged stamp 2, the one serving as the linear actuator Eccentric drive 3 each have an eccentric shaft with eccentric 4 and one on the eccentric 4 rotatably mounted sliding block 5, which rotates the eccentric shaft allowed to convert into a stroke.
  • the Compression springs 6 ensure the non-positive connection between the lower part 7 and Upper part 8 on the one hand and upper part 8 and sliding block 5 on the other.
  • Top 8 and Lower part 7 engage coaxially in a machine frame-fixed cylinder 10, so that between the upper and lower parts of the hydraulic pads, which act as pistons 9 forms, the pressure and hydraulic fluid with a hydraulic system 11 is in line connection.
  • This hydraulic system 11 is an additional one Lift drive designed for the forging stamp 2, via the when stopped or eccentric drive 3 ineffective in stroke movement due to the application of hydraulic medium the hydraulic cushion 9 each the lower part 7 of the forging stamp 2 can be driven in the sense of a lifting movement independent of the upper part 8 and thus forging processes with arbitrarily low deformation speeds have it carried out.
  • FIG. 2 in which the lifting drive concept for a forging die is illustrated in the drive train 12 of the eccentric drive 3 for the mechanical lifting drive of the forging punch 2 a clutch 13 and a brake 14 integrated so that the mechanical lifting drive for each forging punch 2 by uncoupling the Forging die-side drive train section from the engine-side drive train section and corresponding braking of this drive train section can be stopped and the eccentric and thus the sliding block 5 in any by an angular position measuring device 32 detectable stroke position, preferably in the lower or upper dead center position can be positioned, which also the Upper part 8 is held in this stroke position.
  • the hydraulic system 11 which is designed as an additional linear actuator and corresponding control pumps 15, switching valves 16, pressure vessel 17 u.
  • the mechanical lifting drive for the forging stamp 2 and the hydraulic system 11 as an additional lifting drive for the forging stamp 2 is the same as the embodiment in FIG. 2 and therefore also in the same the same reference numerals apply to the same parts, there is everyone Forge stamp 2 a piston-equipped compensating cylinder 21 from a Piston part 22 which is firmly supported on the machine frame and opposite it stroke-guided cylinder part 23, the between the piston and cylinder part 22, 23 resulting cylinder space 24 to the volume of the hydraulic cushion 9 has adapted volume and a compensation line 25 with the Hydraulic cushion 9 of the associated forging punch 2 in line connection stands.
  • the compensating cylinder 21 coaxial to the forging stamp 2 engages its stroke-movable cylinder part 23 at the point of attack 26 of the upper part 8 of the forging punch 2 diametrically opposite point 27 on the sliding block 5 of the corresponding eccentric drive 3 on, so that at a sliding block movement of the hydraulic pads 9 and the cylinder chamber 24 in opposite directions reduce or enlarge and thereby it via the compensating line 25 during the sliding block movement there is a hydraulic fluid compensation that the eccentric drive 3 as a lifting drive for the lower part 7 of the forging punch 2 ineffective.
  • This lower part 7 can therefore via the hydraulic system 11 as additional hydraulic lifting drive, in turn, by means of a suitable application of hydraulic medium of the hydraulic cushion 9 a corresponding lifting movement be forced at the desired low lifting speed.
  • the movement of the lower part 7 is detected by the displacement measuring device 33 and via a corresponding control device belonging to the hydraulic system 11 controlled.
  • a combination of using the angle measuring device 32 detected eccentric movement and the lower part movement can therefore be a deformation process with very low deformation speed and very high Return stroke and setting speed can be achieved.
  • a switching valve 28 is integrated, the either the line connection opens and the hydraulic fluid compensation between Cylinder chamber 24 and hydraulic cushion 9 allowed or the line connection closes and via the hydraulic cushion 9 to a rigid drive connection between the upper and lower part 8, 7 of the hydraulic ram 2 leads.
  • the cylinder room 24 is then forward in the direction of flow to the hydraulic cushion 9 the branch line 29 branching off the switching valve 28 to an expansion tank 30 connected so that the sliding block 5 following relative movement between Piston and cylinder part 22, 23 of the compensating cylinder 21 remains possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Forging (AREA)
EP00890231A 1999-10-07 2000-07-26 Machine à forger Withdrawn EP1093871A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT170799A AT407617B (de) 1999-10-07 1999-10-07 Schmiedemaschine
AT170799 1999-10-07

Publications (2)

Publication Number Publication Date
EP1093871A2 true EP1093871A2 (fr) 2001-04-25
EP1093871A3 EP1093871A3 (fr) 2002-06-26

Family

ID=3519252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890231A Withdrawn EP1093871A3 (fr) 1999-10-07 2000-07-26 Machine à forger

Country Status (3)

Country Link
EP (1) EP1093871A3 (fr)
JP (1) JP2001150084A (fr)
AT (1) AT407617B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104174799A (zh) * 2013-05-23 2014-12-03 张伟 四锤头机械精锻机
CN104550598A (zh) * 2015-01-21 2015-04-29 李富申 一种旋转精锻机的磁力无触点旋锻装置
WO2015118502A1 (fr) * 2014-02-10 2015-08-13 Danieli & C. Officine Meccaniche S.P.A. Machine de forgeage
CN106623719A (zh) * 2017-02-24 2017-05-10 王安基 锻造机构及锻机
CN107009653A (zh) * 2017-05-18 2017-08-04 平阳县中塑机械有限公司 塑料容器加工设备的升降驱动装置
EP3338909A1 (fr) * 2016-12-22 2018-06-27 GFM - GmbH Dispositif d'estampage
AT525034A1 (de) * 2021-05-12 2022-11-15 Gfm Gmbh Verfahren zum Warmumformen eines gegossenen Schmiedeblocks mithilfe einer Schmiedevorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430680B (zh) * 2011-10-25 2013-06-26 中南大学 同步驱动模锻液压机超慢速液压系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662640A (en) * 1969-10-09 1972-05-16 Press Systems Inc Machine tool
DE2207717C3 (de) * 1972-02-18 1975-10-16 Maschinenfabrik Sack Gmbh, 4000 Duesseldorf Steuereinrichtung mit hydraulischer Gleichlaufsteuerung für Schmiedemaschinen
FR2217093B1 (fr) * 1974-02-06 1978-03-10 Sack Gmbh Maschf
DE3507327A1 (de) * 1985-03-01 1986-09-04 Jörg 8607 Hollfeld Lange Exzenter-hydraulikpresse
AT404440B (de) * 1996-09-17 1998-11-25 Gfm Holding Ag Verfahren zur hubfrequenzsteuerung einer schmiedemaschine und schmiedemaschine zum durchführen des verfahrens

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104174799A (zh) * 2013-05-23 2014-12-03 张伟 四锤头机械精锻机
RU2650369C2 (ru) * 2014-02-10 2018-04-11 ДАНИЕЛИ И КО ОФФИЧИНЕ МЕККАНИКЕ С.п.А. Ковочная машина
WO2015118502A1 (fr) * 2014-02-10 2015-08-13 Danieli & C. Officine Meccaniche S.P.A. Machine de forgeage
US9873146B2 (en) 2014-02-10 2018-01-23 Danieli & C. Officine Meccaniche S.P.A. Forging machine
EP3104992B1 (fr) 2014-02-10 2018-04-04 Danieli & C. Officine Meccaniche S.p.A. Machine et procédé de forgeage
CN104550598A (zh) * 2015-01-21 2015-04-29 李富申 一种旋转精锻机的磁力无触点旋锻装置
CN104550598B (zh) * 2015-01-21 2017-01-18 李富申 一种旋转精锻机的磁力无触点旋锻装置
EP3338909A1 (fr) * 2016-12-22 2018-06-27 GFM - GmbH Dispositif d'estampage
CN106623719A (zh) * 2017-02-24 2017-05-10 王安基 锻造机构及锻机
CN106623719B (zh) * 2017-02-24 2019-04-26 王安基 锻造机构及锻机
CN107009653A (zh) * 2017-05-18 2017-08-04 平阳县中塑机械有限公司 塑料容器加工设备的升降驱动装置
AT525034A1 (de) * 2021-05-12 2022-11-15 Gfm Gmbh Verfahren zum Warmumformen eines gegossenen Schmiedeblocks mithilfe einer Schmiedevorrichtung
WO2022236345A1 (fr) 2021-05-12 2022-11-17 Gfm Gmbh Procédé de formage à chaud d'un lingot de forge coulé à l'aide d'un dispositif de forgeage
EP4414099A2 (fr) 2021-05-12 2024-08-14 GFM GmbH Procédé de formage à chaud d'un bloc de forgeage coulé à l'aide d'un dispositif de forgeage
AT525034B1 (de) * 2021-05-12 2024-09-15 Gfm Gmbh Verfahren zum Warmumformen eines gegossenen Schmiedeblocks mithilfe einer Schmiedevorrichtung
EP4414099A3 (fr) * 2021-05-12 2024-12-04 GFM GmbH Procédé de formage à chaud d'un bloc de forgeage coulé à l'aide d'un dispositif de forgeage

Also Published As

Publication number Publication date
AT407617B (de) 2001-05-25
EP1093871A3 (fr) 2002-06-26
ATA170799A (de) 2000-09-15
JP2001150084A (ja) 2001-06-05

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