EP0940199B1 - Appareil pour le formage hydraulique des corps métallique creux - Google Patents

Appareil pour le formage hydraulique des corps métallique creux Download PDF

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Publication number
EP0940199B1
EP0940199B1 EP99104349A EP99104349A EP0940199B1 EP 0940199 B1 EP0940199 B1 EP 0940199B1 EP 99104349 A EP99104349 A EP 99104349A EP 99104349 A EP99104349 A EP 99104349A EP 0940199 B1 EP0940199 B1 EP 0940199B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
cylinder
press frame
mold
locking
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.)
Expired - Lifetime
Application number
EP99104349A
Other languages
German (de)
English (en)
Other versions
EP0940199A3 (fr
EP0940199A2 (fr
Inventor
Jürgen KLEINSCHMIDT
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.)
Benteler Deustchland GmbH
Original Assignee
Benteler Deustchland 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 Benteler Deustchland GmbH filed Critical Benteler Deustchland GmbH
Publication of EP0940199A2 publication Critical patent/EP0940199A2/fr
Publication of EP0940199A3 publication Critical patent/EP0940199A3/fr
Application granted granted Critical
Publication of EP0940199B1 publication Critical patent/EP0940199B1/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/021—Deforming sheet bodies
    • B21D26/025—Means for controlling the clamping or opening of the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/039—Means for controlling the clamping or opening of the moulds

Definitions

  • the invention relates to a device for hydraulic Forming of metallic hollow bodies with one in one Press frame arranged mold.
  • Hydraulic locking presses predominantly come here for use with a fixed lower part and a shiftable top.
  • the top is over Hydraulic cylinder closed or opened.
  • the holding press is designed so that during of the hydroforming process over a long period of time holds.
  • the cylinders must correspond to the opening stroke run all the way. This results accordingly high cycle times. Since the closing force in the hydroforming process is relatively large a very complex hydraulic system is also required.
  • presses belong to the prior art, in which the mold is mechanically locked. Due to the effect of hydraulic forming Forces and the resulting reaction forces the side stand of the Press frame come with the result that the molding tool opens. This causes the hollow body to the deformation in the parting plane between the lower part and Upper part is not held in a form-fitting manner adversely affects the quality of the formed product. As a result, repositioning the mold necessary during the forming process, but this is the case with the known ones No pressing at all or only through a complex construction can be realized.
  • JP-A-61290000 is a hydraulic one Press known with one arranged in a press frame Molding tool, which is one of an open position vertically displaceable in a closed position Has lower part. This is done via an auxiliary cylinder, which moves the lower part upwards. Here will the lower part guided on guide rods. Once the bottom part reached the top, the guide rods through hydraulically operated locking devices locked. Then the top is replaced by a Master cylinder moved down and the forming or Cutting process carried out.
  • the invention is based on the prior art Task based on a device for hydraulic forming of creating hollow metallic bodies with simple means a fast and precise closing process of the mold with sufficiently large opening strokes guaranteed and a more economical hydroforming process enables.
  • the core idea of the invention is a device whose Lower part from an open position to a closed position vertically guided is displaceable, the lower part in the closed position can be locked by a locking body and the upper part hydraulically against the Lower part can be pressed, the upper part via a Hydraulic cushion is supported on a press frame.
  • the locking body can be made in one or more parts his.
  • the lower part comes into the closed position with the Upper part and is locked here by the locking body. Then the upper part is hydraulically pressed against the lower part pressed. The stroke performed is very great small. During the hydroforming process that is then carried out the mold is clamped between mechanical Down support and hydraulic support up.
  • the press frame In the event of any longitudinal expansion in the side stands the press frame is immediately automatic Repositioning the hydraulically supported upper part. On This makes it impossible to open or move the mold. This ensures a precise forming process.
  • the device according to the invention is also distinguished due to short cycle times.
  • the lifting cylinder of the lower part does not have to apply any forming or deforming forces.
  • the locking cylinders of the upper part form a hydraulic one Support and must be in the case of a longitudinal expansion in Just add the press frame.
  • the hydraulic system can accordingly be carried out more easily and cost-effectively become.
  • the upper part is on a hydraulic cushion on the press frame supported and comprises at least one hydraulically acting piston-cylinder unit (claim 2).
  • piston-cylinder unit claim 2
  • the use of two piston-cylinder units is practical on.
  • Figure 1 shows a device for hydraulic forming of metallic hollow bodies.
  • the device comprises a press frame mounted in a fixed position on floor supports 1 2.
  • the press frame 2 is from a front Frame plate 3 and a rear frame plate 4 formed, which incorporates an upper cross member 5 and a lower cross member 6 braced against each other are.
  • a molding tool 7 is arranged in the press frame 2.
  • the Mold 7 is divided into two parts with a lower part 8 and an upper part 9.
  • the lower part 8 is in an open position
  • the closed position can be moved vertically.
  • In the figure 1 shows the closed position.
  • the lower part 8 is moved by a lifting table 10, the hydraulic upwards via a lifting cylinder 11 or can be moved down.
  • a lifting table 10 there is one Guide rod of the lifting table 10 designated.
  • the upper part 9 is supported indirectly on the press frame 2 movable from.
  • the upper part 9 is on a hydraulic cushion 13 attached.
  • the hydraulic cushion 13 is from two hydraulically acting here indicated schematically Piston-cylinder units 14, 15 are formed. These are with their cylinders on the upper part 9 and with their pistons on upper cross member 5 set.
  • the bottom of the cylinder is designed as a platen.
  • the locking body consists of a unit of two locking blocks 17 and 18, which each have a lever arm 19, 20 attacking hydraulic cylinders 21, 22 um a pivot bearing 23, 24 are pivotable.
  • the Hydraulic cushion 13 pressurized. This will the upper part 9 hydraulically locked against the mechanically Lower part 8 pressed. The executed stroke of the upper part 9 is small here.
  • the hydroforming process then takes place. This is during the forming process Hydraulic cushion 13 pressurized, so that an automatic Repositioning the upper part 9 in a possible Elongation of the side stands 25, 26 of the press frame 2 is done. A gap or an offset in the mold 7 is thereby avoided.
  • the Mold 7 opened.
  • the blocking body 16 the lifting table 10 freely by pivoting the locking blocks 17, 18.
  • the hydraulic cushion 13 relieved of pressure. Lift table 10 and lower part 8 are lowered, whereupon the formed product is taken and further processed can be supplied.
  • FIG. 2 corresponds from the basic structure of that of Figure 1.
  • a Blocking body 27 is provided, which is translational, that is, in a linear movement is shiftable.
  • the locking body 27 comprises a one-piece locking block 28 with recesses 29 for carrying out the piston rod of Lift cylinder 11 or the guide rods 12 (see FIG 1).
  • the hydraulic cushion 34 comprises a piston-cylinder unit 35 with two pistons 36, 36 'and a common cylinder 37.
  • the pistons 36, 36 'and the cylinder 37 are on vertical columns 38, 38 'out.
  • the cylinder 37 is on Upper part 39 of a tool set, whereas the Pistons 36, 36 'on the upper cross member 40 of a press frame issue.
  • the hydraulic cushion 34 is pressurized during the forming process. With a possible longitudinal expansion of the side stand guaranteed of the press frame, not shown here the hydraulic cushion 34 an automatic Repositioning the upper part 39. As a result, a gap is formed or an offset in the mold is avoided.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (4)

  1. Appareil pour la mise en forme sous haute pression intérieure de corps creux métalliques, qui comprend un outil de moulage (7) agencé dans un châssis de presse (2), avec une partie inférieure (8) déplaçable verticalement et de façon guidée depuis une position ouverte jusque dans une position fermée, et une partie supérieure (9, 39) supportée de façon mobile, dans lesquelles la partie inférieure (8) est susceptible d'être arrêtée par un corps de blocage (16, 27) dans la position fermée et la partie supérieure (9, 39) est susceptible d'être pressée par voie hydraulique contre la partie inférieure (8), dans lequel la partie supérieure (9, 39) est supportée sur le châssis de presse (2) au moyen d'un coussin hydraulique (13, 34).
  2. Appareil selon la revendication 1, caractérisé en ce que le coussin hydraulique (13, 34) comprend au moins une unité à piston-et-cylindre (14, 15, 35).
  3. Appareil selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que le corps de blocage (16) est capable de pivoter.
  4. Appareil selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que le corps de blocage (27) est déplaçable par translation.
EP99104349A 1998-03-06 1999-03-04 Appareil pour le formage hydraulique des corps métallique creux Expired - Lifetime EP0940199B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19809746 1998-03-06
DE19809746A DE19809746A1 (de) 1998-03-06 1998-03-06 Vorrichtung zur hydraulischen Umformung von metallischen Hohlkörpern

Publications (3)

Publication Number Publication Date
EP0940199A2 EP0940199A2 (fr) 1999-09-08
EP0940199A3 EP0940199A3 (fr) 2000-05-10
EP0940199B1 true EP0940199B1 (fr) 2001-11-21

Family

ID=7860021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104349A Expired - Lifetime EP0940199B1 (fr) 1998-03-06 1999-03-04 Appareil pour le formage hydraulique des corps métallique creux

Country Status (6)

Country Link
US (1) US6018971A (fr)
EP (1) EP0940199B1 (fr)
CZ (1) CZ295420B6 (fr)
DE (2) DE19809746A1 (fr)
ES (1) ES2163906T3 (fr)
PT (1) PT940199E (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6134931A (en) * 1999-05-26 2000-10-24 Husky Injection Molding Systems Ltd. Process and apparatus for forming a shaped article
AU1747801A (en) * 1999-11-17 2001-05-30 J-Tec Tool assembly
US6889535B1 (en) 1999-11-17 2005-05-10 Hyfotec Sweden Ab Tool assembly
US6170309B1 (en) * 1999-11-23 2001-01-09 Dana Corporation Apparatus for simultaneously performing multiple hydroforming operations
US6536251B2 (en) 2000-03-31 2003-03-25 Dana Corporation Apparatus for performing hydroforming operation
EP1138410B1 (fr) * 2000-03-31 2004-11-10 Dana Corporation Dispositif pour le formage à haute pression interne
US6892560B2 (en) * 2000-06-16 2005-05-17 Toyota Jidosha Kabushiki Kaisha Mold clamping apparatus and mold clamping method
US7047780B2 (en) * 2001-06-29 2006-05-23 Dana Corporation Apparatus for performing a hydroforming operation
DE10149538C2 (de) * 2001-10-08 2003-11-06 Konrad Schnupp Riegelvorrichtung für eine Umformpresse
JP3897562B2 (ja) * 2001-10-24 2007-03-28 アイダエンジニアリング株式会社 機械プレス
DE10306161B4 (de) * 2003-02-14 2005-02-17 Daimlerchrysler Ag Einrichtung zum Innenhochdruckumformen von Werkstücken
US7251973B2 (en) * 2005-09-12 2007-08-07 Gharib Mohamed T Hydroforming apparatus
DE102005057863B3 (de) * 2005-12-02 2006-08-17 Benteler Automobiltechnik Gmbh Drucksteuerungssystem für die Innenhochdruckumformung
ATE419078T1 (de) 2007-05-15 2009-01-15 Fiat Ricerche Vorrichtung und verfahren zum innenhochdruckumformen von metallischen teilen
CN108638568B (zh) * 2018-04-25 2021-06-08 天津市天锻压力机有限公司 一种用于液压机的节能液压垫控制系统
CN108908983A (zh) * 2018-08-02 2018-11-30 安徽远都机床股份有限公司 一种具有缓冲的开式双点液压装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303635C2 (de) * 1983-02-03 1985-11-21 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Hydraulische Kurzhub-Formpresse
US4580436A (en) * 1984-03-19 1986-04-08 Nelson Richard E Four bar linkage actuator
JPS61290000A (ja) * 1985-06-14 1986-12-19 Yuatsu Kiki Hanbai Kk 台盤などの開閉装置
US5582052A (en) * 1993-05-20 1996-12-10 Benteler Industries, Inc. Controlled time-overlapped hydroforming
US5415021A (en) * 1993-10-29 1995-05-16 Folmer; Carroll W. Apparatus for high pressure hydraulic forming of sheet metal blanks, flat patterns, and piping
DE4402673A1 (de) * 1994-01-29 1995-08-03 Huber & Bauer Gmbh Vorrichtung zum Innenhochdruckumformen
DE4416147C2 (de) * 1994-05-09 1998-04-09 Schaefer Hydroforming Gmbh Anwendung des Innenhochdruckumformverfahrens zum Herstellen eines gekrümmten metallischen Längshohlkörpers und eine hierfür einsetzbare Innenhochdruckumformpresse
DE19607257C2 (de) * 1996-02-27 1999-11-04 Hydrap Pressen Maschinenbau Hydraulische Blechformpresse
DE19608486C1 (de) * 1996-03-05 1997-07-24 Hydrap Pressen Maschinenbau Presse

Also Published As

Publication number Publication date
CZ78299A3 (cs) 2000-05-17
DE19809746A1 (de) 1999-09-16
US6018971A (en) 2000-02-01
EP0940199A3 (fr) 2000-05-10
PT940199E (pt) 2002-03-28
CZ295420B6 (cs) 2005-08-17
EP0940199A2 (fr) 1999-09-08
ES2163906T3 (es) 2002-02-01
DE59900662D1 (de) 2002-02-21

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