EP0993888A2 - Machine à forger - Google Patents

Machine à forger Download PDF

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Publication number
EP0993888A2
EP0993888A2 EP99890320A EP99890320A EP0993888A2 EP 0993888 A2 EP0993888 A2 EP 0993888A2 EP 99890320 A EP99890320 A EP 99890320A EP 99890320 A EP99890320 A EP 99890320A EP 0993888 A2 EP0993888 A2 EP 0993888A2
Authority
EP
European Patent Office
Prior art keywords
forging
hydraulic
drive
machine according
units
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Withdrawn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
EP99890320A
Other languages
German (de)
English (en)
Other versions
EP0993888A3 (fr
Inventor
Gottfried Blaimschein
Alfred 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 EP0993888A2 publication Critical patent/EP0993888A2/fr
Publication of EP0993888A3 publication Critical patent/EP0993888A3/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Withdrawn legal-status Critical Current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
    • 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
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/04—Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn

Definitions

  • the invention relates to a forging machine with at least two counteracting eccentric driven in a machine frame Forging stamps.
  • the linear drives are for the forging dies have so far been integrated into a common drive, of one or two drive motors and corresponding gearboxes Drive connection with the individual linear actuators comprises, the synchronization of the drive via gear wheels or own synchronization shafts he follows. This keeps the forge at a constant rate or when using pole-changing motors to two constant strokes limited and there is no possibility of the once specified Change stroke order of the forge stamp.
  • the drive must Start the forging at the same time all lifting drives in motion, which is too high Leads to current start-up peaks and loads the supply network accordingly, what burdens, in addition, unfavorable classifications of energy procurement costs entail.
  • the common drive connection of all forging stamps further leads to high momentum, the powerful clutches entail and with the necessary gear and synchronization facilities require a lot of construction work. Last but not least because of the big forging boxes and gear boxes machines more considerable Outside dimensions.
  • the invention is therefore based on the object of a forging machine to create the type described above, which is comparatively less effort Construction due to its rational operation and its versatility distinguished.
  • each forging stamp Listened to individual drive and these individual drives via a control device can be controlled and regulated with regard to speed and rotational position.
  • the individual drives and their corresponding control also allows the speeds of the linear actuators and thus change the beat numbers as desired and also the respective one Rotary position of the linear actuators and thus the stroke sequence of the forging dies vary. It is therefore possible to use the same forging machine Forging with striking punches or alternating in pairs striking stamps, with all existing stamps or only with selected stamps, with equal or unequal angular distances striking stamps u. Like. To use, the hitting always with selectable Number of blows.
  • the forging stamp can be in any Position the rotational position, for example in the front or rear dead center position, to carry out a special forging operation or a hammer change or the like.
  • the single drive concept is not based on a special machine construction bound, but can with constant advantages in mechanical Forging machines of different designs and functions are used become.
  • the forging stamp consists of two Assemble parts and the two parts with the interposition of one Hydraulic pads non-positively by applying pressure by means of a compression spring to connect, the hydraulic cushion with a hydraulic medium supply device as stroke position adjustment device in line connection stands.
  • a compression spring lower part of a hydraulic cushion provided with a control device controllable hydraulic system as additional drive in line connection stands, in addition to using the hydraulic cushion as a stroke position adjustment device the mechanical lifting drive over a forging movement the hydraulic cushion are superimposed, with eccentric drive and hydraulic drive can be adjusted to one another via the control device.
  • the individual drives can be both from an electric motor and from one Hydraulic motor are derived, expediently in a hydraulic drive common for the hydraulic motors and the hydraulic pads Hydraulic systems are provided so that by appropriate control via the control device hydraulic motor and hydraulic cushion can be supplied with hydraulic fluid to the extent required.
  • each forging stamp has its own Lift and single drive and, if necessary, its stroke position adjustment device combined into a forging unit arranged in its own housing is which forging units essentially radially from the outside to one ring-shaped, corresponding radial recesses forging box of the machine frame can be attached and screwed tight.
  • the forge box can be proportionate Space-saving design, since it is only used to support the individual in their housings pre-assembled forging units and for guiding the Forging stamp serves, the forging units with their housing, however, free can protrude from the forge box.
  • the forging units also include the longitudinal guides of the forging dies, you can as a functional unit in the recesses of the Forging box are used, which further reduces the assembly effort.
  • the structural units are radially displaceable in the Supported forging box is its own mechanical or hydraulic Stroke adjustment device for the forging stamp unnecessary, because the respective The stroke position of the forging stamp can be adjusted via the radial positioning of the Set forging units.
  • a forging machine 1 has four eccentrically driven counteracting Forging punch 2, the eccentric drive serving as the lifting drive 3 each an eccentric shaft 4 with eccentric 5 and one on the eccentric 5 rotatable mounted sliding block 6, which comprises the rotary movement of the eccentric shaft in a It is possible to convert the stroke movement.
  • the forging stamp 2 frictionally together with the sliding block 6, the forging stamp consisting of two via a stroke position adjustment device 8 interconnected parts, a lower part on the tool side 9 and an eccentric upper part 10 are assembled and the compression springs 7 Attack on the lower part 9.
  • 3 is a mechanical stroke position adjustment device for the stamp parts connected to one another by a screw connection 11 are provided, which stroke position adjustment device 8 has a rotatable upper part of the stamp 10 rotatably, but slidably seated, with a not shown Actuator drive-connected ring gear 12, so that a rotation of the ring gear 12 a stroke position adjustment caused by the screw adjustment of the lower part guided non-rotatably by a straight guide 13 9 brings with it.
  • Each forging die 2 is now assigned an individual drive 14, for example comprises a hydraulic motor 15, one of which via a clutch 16 Drive pinion 17 is drivable with a drive gear 18 of the eccentric shaft 4 combs.
  • the drive gear 18 also acts as a flywheel, which is drawn up by one at the opposite end of the eccentric shaft 4 Inertia 19 is added.
  • each forging stamp now forms 2 with its eccentric drive 3 and its single drive 14 and with its stroke position adjustment device 8 a forging unit 20 with its own Housing 21, which forging units 20 radially from the outside to one in essential annular forging box 22 are placed, for receiving of the forging units 20 radial recesses 23 with longitudinal guides 24 for the forging stamp 2.
  • the housing 21 of the forging units 20 extends radially inward and also takes the longitudinal guides 24th for the forging stamp 2, so that the forging units 20 as ready to use Assembly 25 inserted into the recesses 23 of the forging box 22 can be.
  • These forging units 20 are supported by corresponding ones Screw connections 26 and spacers 27 or the like. Radially displaceable on the forging box 22, so that due to the displaceability Stroke adjustment of the forging stamp 2 is possible and therefore one own lifting position adjustment device unnecessary.
  • the forging units and the individual drives for the forging stamps are basically similar is constructed like the embodiments of FIGS. 1 to 3 and therefore in the the same components are provided with the same reference numerals, there are between the lower part 9 and the upper part 10 of the forging stamp 2 one Hydraulic cushion 28, the compression springs 7 in turn for the non-positive Connection between lower part 9 and upper part 10 on the one hand and upper part 10 and Provide sliding block 6 on the other hand.
  • Upper part 10 and lower part 9 engage coaxially a seated in the housing 21 cylinder 29, so that between the as Piston-acting upper and lower parts of the hydraulic cushion 28 forms the Pressurizing and hydraulic medium application with a hydraulic system 30 line-connected is.
  • a forging unit there is one of the individual drives 14 of the forging stamp 2 superordinate control device 31, which the individual drives can be controlled with regard to speed and rotational position.
  • a controllable servo control 33 is provided for the hydraulic motor 15, to the various functions, such as synchronization, choice of stroke rate or to change the stroke order.
  • the stroke position of the forging stamp 2 is also monitored and required stroke position adjustment, the stroke position adjustment device 8 is controlled. Since a common control device is expedient for all forging units is provided, go from the control device 31 Control lines 34 to all existing forging units.
  • the hydraulic system 30 also simultaneously comprises the hydraulic circuit 32 for the hydraulic motor 15 of the individual drive.
  • the forging units are in turn a common control device 31, which controls the hydraulic circuit 32 via its control lines 34 for the individual drive 14 and the hydraulic system 30 for pressurizing the pressure medium of the hydraulic cushion 28 controls, using suitable switching valves 35, 36 the hydraulic single drive with the hydraulic auxiliary drive can be combined.
  • the control device 31 basically the synchronization of the stamp movements, the number of strokes and the stroke sequence of the forging stamps controlled and monitored and also the The respective stroke position of the forging stamp can be controlled using the control device by appropriately loading the hydraulic cushion 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
EP99890320A 1998-10-13 1999-10-08 Machine à forger Withdrawn EP0993888A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT170998 1998-10-13
AT0170998A AT406648B (de) 1998-10-13 1998-10-13 Schmiedemaschine

Publications (2)

Publication Number Publication Date
EP0993888A2 true EP0993888A2 (fr) 2000-04-19
EP0993888A3 EP0993888A3 (fr) 2001-05-30

Family

ID=3519293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890320A Withdrawn EP0993888A3 (fr) 1998-10-13 1999-10-08 Machine à forger

Country Status (3)

Country Link
EP (1) EP0993888A3 (fr)
JP (1) JP2000117382A (fr)
AT (1) AT406648B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3104992B1 (fr) 2014-02-10 2018-04-04 Danieli & C. Officine Meccaniche S.p.A. Machine et procédé de forgeage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5528984B2 (ja) * 2010-10-19 2014-06-25 アイダエンジニアリング株式会社 機械プレスのプレス荷重制御装置
CN108339914A (zh) * 2018-01-17 2018-07-31 罗诗敏 一种五金件液压锻造机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671095A (en) * 1984-04-21 1987-06-09 Eumuco Aktiengesellschaft Fur Maschinenbau Method for forming work-pieces by drop forging
DE3837643A1 (de) * 1988-11-05 1990-05-10 Schloemann Siemag Ag Stauchpresse zur schrittweisen querschnittsaenderung von strangfoermigen metallkoerpern, bspw. brammen
US5447050A (en) * 1992-09-30 1995-09-05 Pahnke Engineering Gmbh & Co., Kg Forming machine
EP0798056A1 (fr) * 1996-03-25 1997-10-01 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et dispositif pour le refoulement latéral de brames
EP0829319A2 (fr) * 1996-09-17 1998-03-18 Gfm Holding Ag Machine à forger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671095A (en) * 1984-04-21 1987-06-09 Eumuco Aktiengesellschaft Fur Maschinenbau Method for forming work-pieces by drop forging
DE3837643A1 (de) * 1988-11-05 1990-05-10 Schloemann Siemag Ag Stauchpresse zur schrittweisen querschnittsaenderung von strangfoermigen metallkoerpern, bspw. brammen
US5447050A (en) * 1992-09-30 1995-09-05 Pahnke Engineering Gmbh & Co., Kg Forming machine
EP0798056A1 (fr) * 1996-03-25 1997-10-01 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et dispositif pour le refoulement latéral de brames
EP0829319A2 (fr) * 1996-09-17 1998-03-18 Gfm Holding Ag Machine à forger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3104992B1 (fr) 2014-02-10 2018-04-04 Danieli & C. Officine Meccaniche S.p.A. Machine et procédé de forgeage

Also Published As

Publication number Publication date
JP2000117382A (ja) 2000-04-25
AT406648B (de) 2000-07-25
ATA170998A (de) 1999-12-15
EP0993888A3 (fr) 2001-05-30

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