EP0667197A1 - Machine à forger - Google Patents

Machine à forger Download PDF

Info

Publication number
EP0667197A1
EP0667197A1 EP95890013A EP95890013A EP0667197A1 EP 0667197 A1 EP0667197 A1 EP 0667197A1 EP 95890013 A EP95890013 A EP 95890013A EP 95890013 A EP95890013 A EP 95890013A EP 0667197 A1 EP0667197 A1 EP 0667197A1
Authority
EP
European Patent Office
Prior art keywords
connecting rod
machine frame
eccentric
forging machine
forged
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
EP95890013A
Other languages
German (de)
English (en)
Other versions
EP0667197B1 (fr
Inventor
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 Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Original Assignee
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau 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 GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG filed Critical GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Publication of EP0667197A1 publication Critical patent/EP0667197A1/fr
Application granted granted Critical
Publication of EP0667197B1 publication Critical patent/EP0667197B1/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
    • 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
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams

Definitions

  • the invention relates to a forging machine with driven connecting rods which are longitudinally guided in a machine frame, in particular eccentrically driven forged connecting rods, which are guided radially to the eccentric shaft axis in a machine frame and which have a connecting rod head which forms a sliding surface for a rotating block on the eccentric sliding block for the drive connection.
  • a positive drive connection between the sliding block and the connecting rod head has previously been provided by the sliding block engaging in a transverse link guide of the connecting rod head.
  • the connecting rod head guides the sliding block along two opposing sliding surfaces, for which purpose the connecting rod head usually encloses the sliding block and thus the eccentric.
  • the invention is therefore based on the object of eliminating these deficiencies and of creating a forging machine of the type described at the outset which is distinguished by its particularly simple drive concept and thereby enables a robust, compact construction.
  • the invention solves this problem in that the connecting rod head and sliding block are connected to one another in a purely frictional manner, compression springs supported on the machine frame pressurizing the forged connecting rods and pressing the connecting rod heads with their sliding surfaces against the sliding blocks.
  • This frictional drive connection means that the sliding block only needs to provide the downward working stroke, while the return stroke of the forged connecting rod takes place due to the pressurization via the compression springs.
  • Conrod head and sliding block therefore only need to interact via a single sliding surface, so that no interlocking or overlapping form-locking parts are required and a very space-saving design is possible.
  • the drive essentially leads to compressive forces, which means that despite the relatively small dimensions, high loads can be absorbed and the desired performance is guaranteed.
  • All spring elements can be used as compression springs that press the sliding conrods against the sliding block with sufficient force.
  • piston drives connected to an accumulator are provided as compression springs, since this gives rise to hydraulic springs with the desired restoring forces and sufficient flexibility in a simple construction.
  • the forged connecting rods have two parts which can be connected to one another in a screw-adjustable manner, a part which is guided in a rotationally fixed manner with respect to the machine frame and a part which is rotatably guided in relation to the machine frame, a rotary drive being associated with the rotatable part.
  • the division of the forged connecting rods into a rotatable part and a screwed but non-rotatably guided other part results in a simple and reliable stroke position adjustment.
  • the non-rotatable guide of the other part leads to a change in the length of the forged connecting rod due to the screwing together or apart of the two parts and thus to the desired stroke position adjustment. It is only necessary to ensure that the rotary movement of one part does not affect the tool position or the connecting rod drive, which is possible in various ways depending on the drive type.
  • the connection of the upper and lower part is primarily dependent on the change in length due to the screw connection, it is irrelevant whether the screw connection of the two parts of the upper part is screwed into the lower part or the lower part into the upper part and the constructive solution to this Screw connection can be adapted to the structural conditions of the respective forging machine.
  • the rotary drive for the upper part does not have to take part in its lifting movement
  • the rotary drive can have a gear with a non-rotatable but axially displaceable seated on the upper part and rotatably but non-displaceably mounted in the machine frame, so that the upper part with a machine frame fixedly mounted gearwheel is arbitrary can be rotated without hindering the lifting movement of the upper part.
  • the eccentric shafts Due to the non-positive drive connection and the forged connecting rod's own stroke position adjustment, the eccentric shafts can be mounted in simple pivot bearings and there is no need to change the center of the bearing for these bearings. There is therefore no longer any need for an adjustment housing, the eccentric shafts can be driven via simple spur gears or the like, and all the requirements for simplifying the machine frame construction are met.
  • the machine frame can therefore consist essentially of two end wall plates clamped together with the interposition of preferably frame-shaped spacers, so that an extremely expedient, low-effort and yet high-strength forging box is produced.
  • a machine frame 1 which is composed essentially of two parallel end walls 3 clamped together with spacers 2 encircling frame-shaped spacers, forged connecting rods 5, not shown, are guided radially at one end 4, with an eccentric drive 6 for the lifting movement of the forged connecting rods 5 cares.
  • the eccentric drive 6 comprises an eccentric shaft 8, which is mounted in the machine frame 1 and can be driven via a drive gear 7, only indicated, with an eccentric 9, on which eccentric 9 a sliding block 10 is rotatably mounted.
  • the sliding block 10 is drive-connected to the forged connecting rod 5 in a purely non-positive manner, the forged connecting rod 5 being pressurized via compression springs 11 and the eccentric-side connecting rod head 12 of the forged connecting rod 5 being pressed against the sliding block 10 with a sliding surface 13.
  • a support plate 14 which can be fixed on the sliding block 10 or on the connecting rod head 12 and consists of a suitable material or has corresponding lubrication channels or the like.
  • the forged connecting rod 5 is therefore pressed downwards over the sliding block 10 in the sense of a working stroke, while the return stroke takes place due to the pressure load on the compression springs 11, which compression springs are designed as hydraulic springs in the form of a hydraulic piston drive 15 connected to an accumulator (not shown).
  • the forged connecting rod 5 is divided into a lower part 5a on the tool side and an upper part 5b on the eccentric side, which parts 5a, 5b are connected to one another in a screw-adjustable manner.
  • the lower part 5a is guided in a rotationally fixed manner in the machine frame 1, the upper part 5b, on the other hand, can be rotated via a rotary drive 16, which rotary drive 16 has a ring gear 17 which is rotatable but non-displaceably mounted in the machine frame 1, for example a worm wheel, which is rotationally fixed via an axial toothing 18, but is axially displaceable on the upper part 5b.
  • the upper part 5b of the forged connecting rod 5 is therefore rotated without the lifting movement being impaired, and a rotation of the upper part 5b inevitably results in a change in length of the forged connecting rod 5 due to the screw connection with the rotationally guided lower part 5a, and thus one Stroke adjustment for the forging tool 4 on the connecting rod end.
  • the upper part 5b forms a downwardly projecting connecting pin 19 with an external thread 20 and the lower part 5a has an internal bore 21 with an internal thread 22 for receiving the connecting pin 19.
  • the lower part 5a is guided exactly in a rotationally fixed manner by straight guides 23 in the machine frame 1, with these straight guides 23 interacting with a square end flange 24 of the lower part 5a, the corner regions 25 of which form flange attachments for engaging the compression springs 11.
  • the upper part 5b is provided with an inner bore 26, which has an internal thread 27 for screwing in the lower part 5a, which for this purpose has a protruding pin extension 28 with an external thread 29.
  • a protruding pin extension 28 with an external thread 29.
  • two diametrically opposite, projecting flange extensions 30 are provided, which are guided between slot guides 31 and thus hold the lower part 5a in a rotationally fixed manner with respect to the machine frame 1, to which flange extensions 30 a compression spring 11 engages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)
EP95890013A 1994-01-18 1995-01-16 Machine à forger Expired - Lifetime EP0667197B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT8394 1994-01-18
AT83/94 1994-01-18

Publications (2)

Publication Number Publication Date
EP0667197A1 true EP0667197A1 (fr) 1995-08-16
EP0667197B1 EP0667197B1 (fr) 1997-10-08

Family

ID=3481083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890013A Expired - Lifetime EP0667197B1 (fr) 1994-01-18 1995-01-16 Machine à forger

Country Status (6)

Country Link
US (1) US5609056A (fr)
EP (1) EP0667197B1 (fr)
JP (1) JP2837366B2 (fr)
CN (1) CN1062501C (fr)
DE (1) DE59500759D1 (fr)
ES (1) ES2107901T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404441B (de) * 1996-09-17 1998-11-25 Gfm Holding Ag Schmiedemaschine
US6308552B1 (en) 1998-12-09 2001-10-30 Gfm Betteiligungs- Und Management Gmbh & Co. Kg Forging machine
CN102921858A (zh) * 2012-10-26 2013-02-13 无锡欧亚电梯设备有限公司 一种锻压机床曲轴连杆组件
DE102015115660A1 (de) 2014-10-02 2016-04-07 GFM - GmbH Schmiedevorrichtung mit in Hubrichtung geführten, Schmiedewerkzeuge aufnehmenden Stempeln

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407618B (de) * 1998-12-07 2001-05-25 Gfm Beteiligungs & Man Gmbh Rundknetmaschine
JP4170661B2 (ja) * 2002-04-26 2008-10-22 アイダエンジニアリング株式会社 機械プレス
US7010953B2 (en) * 2003-02-04 2006-03-14 Interface Associates, Inc. Swaging machine and method of use
US6993953B2 (en) * 2003-02-04 2006-02-07 Interface Associates, Inc. Swaging die and method of use
US7013800B2 (en) * 2003-07-30 2006-03-21 Aida Engineering Co., Ltd Mechanical press
CN100415497C (zh) * 2003-08-13 2008-09-03 曾田工程技术有限公司 机械压力机
WO2007075585A2 (fr) 2005-12-16 2007-07-05 Interface Associates, Inc. Ballonnets a couches multiples pour des applications medicales et leurs procedes de fabrication
CN102009484A (zh) * 2010-09-28 2011-04-13 天津市天锻压力机有限公司 一种用于粉末液压机上的液压缸柱塞安装结构
CN102218496A (zh) * 2011-05-13 2011-10-19 无锡市乾丰锻造有限公司 一种锻压机柱塞
WO2015118502A1 (fr) 2014-02-10 2015-08-13 Danieli & C. Officine Meccaniche S.P.A. Machine de forgeage
EP3377312B1 (fr) * 2015-11-20 2024-04-10 SMS Group GmbH Presse à course imposée comportant un coulisseau
CN105666913A (zh) * 2016-01-22 2016-06-15 余苏祥 一种智能模具制造装置
CN105666914A (zh) * 2016-01-22 2016-06-15 杨晓丹 一种可保护螺纹传动的新型模具装置
CN105666911A (zh) * 2016-01-22 2016-06-15 余苏祥 一种通过螺纹传动且具有螺纹保护功能的模具装置
CN105666912A (zh) * 2016-01-22 2016-06-15 余苏祥 一种通过螺纹传动的智能模具装置
CN105666910A (zh) * 2016-01-22 2016-06-15 余苏祥 一种通过位置锁定块而具有螺纹保护功能的模具制造装置
CN106623719B (zh) * 2017-02-24 2019-04-26 王安基 锻造机构及锻机
CN109263111B (zh) * 2018-09-30 2020-11-17 西安交通大学 一种曲柄压力机液压式曲柄偏心量调节装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543971A (fr) * 1954-12-28
DE2358390A1 (de) * 1973-11-15 1975-05-28 Gfm Fertigungstechnik Schnellaufende kurzhub-schmiedepresse
JPS60157832A (ja) * 1984-01-27 1985-08-19 Toppan Printing Co Ltd 平圧式ラミネ−ト機

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011809A (en) * 1974-04-03 1977-03-15 L. Schuler Gmbh Press with hydraulic overload safety device and ram weight counterbalancing mechanism
US4096728A (en) * 1977-07-27 1978-06-27 Gulf & Western Manufacturing Company Adjusting device for slide driven lift out actuators
AT370351B (de) * 1981-11-16 1983-03-25 Gfm Fertigungstechnik Schmiedemaschine
JPS58215235A (ja) * 1982-06-10 1983-12-14 Sumitomo Heavy Ind Ltd 鍛造プレス
JPS58189041U (ja) * 1982-06-12 1983-12-15 株式会社神戸製鋼所 鍛造プレスのスライド固定装置
JPS6257728A (ja) * 1985-09-09 1987-03-13 Japan Steel Works Ltd:The 鍛造用プレス
US4677908A (en) * 1985-12-11 1987-07-07 Aida Engineering, Ltd. Slide adjusting device for a press
JPS63144899A (ja) * 1986-12-04 1988-06-17 Kosumetsuku:Kk 機械プレスのダイハイト調節装置
JPH0757440B2 (ja) * 1990-08-30 1995-06-21 アイダエンジニアリング株式会社 プレス機械のダイハイト調整装置
US5349902A (en) * 1993-04-20 1994-09-27 The Minster Machine Company Press shutheight adjustment mechanism
US5345861A (en) * 1993-04-20 1994-09-13 The Minater Machine Company Press adjustment screw mechanism
JP3345144B2 (ja) * 1993-12-27 2002-11-18 アイダエンジニアリング株式会社 プレス機械のスライド装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543971A (fr) * 1954-12-28
DE2358390A1 (de) * 1973-11-15 1975-05-28 Gfm Fertigungstechnik Schnellaufende kurzhub-schmiedepresse
JPS60157832A (ja) * 1984-01-27 1985-08-19 Toppan Printing Co Ltd 平圧式ラミネ−ト機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 322 (M - 440)<2045> 18 December 1985 (1985-12-18) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404441B (de) * 1996-09-17 1998-11-25 Gfm Holding Ag Schmiedemaschine
US5894755A (en) * 1996-09-17 1999-04-20 Gfm Holding Aktiengesellschaft Forging machine
US6308552B1 (en) 1998-12-09 2001-10-30 Gfm Betteiligungs- Und Management Gmbh & Co. Kg Forging machine
CN102921858A (zh) * 2012-10-26 2013-02-13 无锡欧亚电梯设备有限公司 一种锻压机床曲轴连杆组件
DE102015115660A1 (de) 2014-10-02 2016-04-07 GFM - GmbH Schmiedevorrichtung mit in Hubrichtung geführten, Schmiedewerkzeuge aufnehmenden Stempeln
US10166596B2 (en) 2014-10-02 2019-01-01 Gfm-Gmbh Forging apparatus with forging rams guided in the direction of stroke and accommodating forging tools
DE102015115660B4 (de) * 2014-10-02 2020-10-08 GFM - GmbH Schmiedevorrichtung mit einer drehsymmetrischen Anordnung der Schmiedewerkzeuge, mit in Hubrichtung geführten, die Schmiedewerkzeuge aufnehmenden Stempeln

Also Published As

Publication number Publication date
EP0667197B1 (fr) 1997-10-08
DE59500759D1 (de) 1997-11-13
CN1062501C (zh) 2001-02-28
JP2837366B2 (ja) 1998-12-16
ES2107901T3 (es) 1997-12-01
CN1112038A (zh) 1995-11-22
JPH08141684A (ja) 1996-06-04
US5609056A (en) 1997-03-11

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