EP1208926A2 - Dispositif pour l'hydroformage d'une pièce creuse - Google Patents

Dispositif pour l'hydroformage d'une pièce creuse Download PDF

Info

Publication number
EP1208926A2
EP1208926A2 EP01124188A EP01124188A EP1208926A2 EP 1208926 A2 EP1208926 A2 EP 1208926A2 EP 01124188 A EP01124188 A EP 01124188A EP 01124188 A EP01124188 A EP 01124188A EP 1208926 A2 EP1208926 A2 EP 1208926A2
Authority
EP
European Patent Office
Prior art keywords
sealing
stamp
tool
insertion piece
stop
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
EP01124188A
Other languages
German (de)
English (en)
Other versions
EP1208926B1 (fr
EP1208926A3 (fr
Inventor
Bernd Dr. Engel
Michael Dipl.-Ing. Schierz
Matthias Dr.-Ing. Prier
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.)
Schuler Hydroforming GmbH and Co KG
Original Assignee
Schuler Hydroforming 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 Schuler Hydroforming GmbH and Co KG filed Critical Schuler Hydroforming GmbH and Co KG
Publication of EP1208926A2 publication Critical patent/EP1208926A2/fr
Publication of EP1208926A3 publication Critical patent/EP1208926A3/fr
Application granted granted Critical
Publication of EP1208926B1 publication Critical patent/EP1208926B1/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
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • 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
    • B21D26/045—Closing or sealing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49444—Elbow or L-shaped fitting making

Definitions

  • the invention relates to a device for hydroforming hollow bodies, comprising an at least two-part tool and this on both Axial cylinders assigned to the sides, which seal the ends of the in the Close the contour space of the inserted hollow body, at least a sealing plunger a high pressure bore connected to a pressure medium source having.
  • the pipe section After closing the ends of the Pipe section through the sealing stamp, the pipe section is made with the help of a suitable Pressurized with high internal pressure and at the same time Axial pressure (through the seals) on the pipe wall reshaped.
  • the axial pressure and the internal pressure cause the pipe section to the inner contour or the final shape of the hollow body - creates the wall of the contour space of the forming tool.
  • For hydroforming the material is brought into the plastic state, which during of the entire forming process taking into account material hardening and any tool forces are maintained.
  • the invention is therefore based on the object in a device of the beginning to allow a more variable operating mode of the axial cylinder, in particular to improve the design of the sealing stamp.
  • this object is achieved in an incredibly simple manner by that the sealing stamp is provided with a sealing head that can be detached from the front. This can be achieved in the event of wear or a program change more the entire sealing stamp, but only the one with a high-pressure cheese head screw attached sealing head needs to be replaced. This can be done from the full tool condition without mounting on the axial cylinder itself and thus happen very quickly, because after withdrawing the The releasable sealing head is freely accessible from the front, and this regardless of the particular design of the tool.
  • a preferred embodiment of the invention provides that the sealing head at least is in two parts and from a leading arranged, with an inlet slope trained insertion piece and a subsequent guide receptacle consists.
  • the invention is between the insertion piece and the A guide stop arranged. These components form a suitable screw connection a coherent unit.
  • the stop provides a sealing edge in a development of the invention, on the stop creates the front edge of the workpiece to be formed the wearing part of the multi-part sealing head assembly, and only this wearing part needs to be replaced.
  • a single and also much smaller wear part will continue to be also achieved when the insertion piece is advantageously formed with a sealing edge is.
  • the specific location or the location of the course of the sealing edge on the insertion piece can be made dependent on the optimization of the centering.
  • the insertion piece and the Stop hardened and the guide holder made of a material with good Toughness properties and high wear resistance exist.
  • These deliberately different Material properties serve to increase the service life under Consideration of the stresses occurring on the individual components.
  • bronze or a bronze alloy e.g. Gz-CuAlBzNi or AMPCO 25 or others comparable to it suitable materials. This offers good sliding properties of the sealing stamp or head in the upstream of the workpiece to be formed Tool inlet channel.
  • FIG. 1 From a well known hydroforming (IHU) machine are left in Fig. 1 for the sake of simplicity in a drawing
  • the tool 1a or 1b each has a clamping edge 2 provided upper and lower base plates 3 and 4.
  • an upper and a lower base block 5 and 6 are the contour inserts 7 and end-side inlet channels 8 arranged.
  • upstream consoles 9 On the inlet channels 8 upstream consoles 9 are Axial cylinder 10 attached, with a seal extension or Sealing plunger 11 arranged sealing plunger heads 12 are equipped, which are applied when it is loaded the axial cylinder 10 into a for forming in the tool cavity 13 inserted, to be formed hollow body-shaped workpiece 14 (see FIG. 5) in immerse the inlet channels 8 of the tool 1 in a sliding manner and from both ends seal it here.
  • the axial cylinders 10 have the the Tool base blocks 5 or 6 facing ends an adapter 15 with it screwed on clamping ring 16 for receiving and holding the sealing stamp extension 11 on.
  • This sealing stamp is accessible from the front High-pressure cheese head screw 17 a multi-part sealing head or sealing stamp head 12, 112 and 212 (see FIGS. 3 and 5) screwed on.
  • the sealing head or sealing punch 12 engages with one of the anti-rotation devices serving paragraph 18 in the sealing plunger extension 11.
  • High-pressure bore 19 extends through the sealing plunger extension 11 and the high-pressure cheese head screw 17 and thus opens in the operating position in the interior of the workpiece to be formed.
  • Both between the adapter 15 and the clamping ring 16 as well as in the transition from the sealing stamp extension 11 to the sealing head or sealing stamp 12 (or 112 and 212) are sealing rings 20 arranged.
  • FIG. 3 and 4 show an embodiment of a multi-part sealing head 112. This consists of one - in the order of the axial direction of movement Arrow 21 seen from the front when the axial cylinder 10 is acted upon - insertion piece 22, a stop 23 and a guide receptacle 24 together. These components 22, 23 and 24 are integrated into one unit by two cheese head screws 25 connected with each other.
  • the insertion piece 22 has an entry slope 26 and an adjoining leading edge that tapers towards the stop 23 27 trained.
  • the stop 23 is provided with a sealing edge 28 which in situ, i.e. when inserted into the open end of the hollow body to be formed Stamp seals the interior of the hollow body. In the lower one Half of FIG.
  • the outer jacket 30 of the guide receptacle 24 lies when advancing the sealing punch arrangement of the inner wall of the inlet channel 8 (see. FIGS. 1 and 5) and ensures the leadership of the Sealing temple; there is no need for a separate guide unit become.
  • the operating position is shown for the sealing stamp, in which the Sealing head 212 so far into the interior of the workpiece or hollow body 14 has penetrated that the sealing edge 28 of the stop 23 the inner cavity has applied sealingly to the end face of the workpiece 14. It is there further to see that the outer jacket 30 of the guide receptacle 24 in Interaction with the inlet channel 8 takes over the leadership of the sealing head 212 and the sealing punch extension 11 arranged in a guide bush 31 is.
  • Pressure medium shortening length of the workpiece 14 becomes the sealing stamp arrangement advanced in the direction of arrow 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Actuator (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP01124188A 2000-11-15 2001-10-11 Dispositif pour l'hydroformage d'une pièce creuse Expired - Lifetime EP1208926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10056610A DE10056610A1 (de) 2000-11-15 2000-11-15 Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern
DE10056610 2000-11-15

Publications (3)

Publication Number Publication Date
EP1208926A2 true EP1208926A2 (fr) 2002-05-29
EP1208926A3 EP1208926A3 (fr) 2003-07-09
EP1208926B1 EP1208926B1 (fr) 2004-12-08

Family

ID=7663396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01124188A Expired - Lifetime EP1208926B1 (fr) 2000-11-15 2001-10-11 Dispositif pour l'hydroformage d'une pièce creuse

Country Status (7)

Country Link
US (1) US6591650B2 (fr)
EP (1) EP1208926B1 (fr)
JP (1) JP2002205126A (fr)
KR (1) KR20020038493A (fr)
AT (1) ATE284281T1 (fr)
DE (2) DE10056610A1 (fr)
ES (1) ES2233548T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527812A (zh) * 2011-12-26 2012-07-04 北京航空航天大学 一种管材自由胀形组合模具
CN104596858A (zh) * 2013-10-30 2015-05-06 上海汇众汽车制造有限公司 获取管材液压胀形基础性能参数的实验装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100789014B1 (ko) * 2000-10-19 2007-12-26 코스마 인터내셔널 인크. 관형 부품을 하이드로포밍하기 위한 장치 및 방법
DE10236296B4 (de) * 2002-08-08 2004-10-28 Schuler Hydroforming Gmbh & Co. Kg Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern
US20080092975A1 (en) * 2006-09-15 2008-04-24 Grimes David L Heater core connector
DE102006047017A1 (de) * 2006-10-02 2008-04-03 Fachhochschule Köln Fakultät für Angewandte Sozialwissenschaften Vorrichtung zur Innenhochdruckumformung
JP4772736B2 (ja) * 2007-04-20 2011-09-14 東尾メック株式会社 パイプ先端加工具
US8511124B2 (en) 2009-09-18 2013-08-20 Nibco Inc. T-fitting manufacturing method and tool
US8910500B2 (en) 2012-09-10 2014-12-16 National Research Council Of Canada Low friction end feeding in tube hydroforming
CA2845343A1 (fr) * 2013-03-15 2014-09-15 Christopher Reid Kendall Tapis d'exercice ou de sommeil conducteur pour mettre a la terre un utilisateur
CL2014002270A1 (es) * 2014-08-27 2014-11-28 Mulet Martinez Mauricio Eduardo Mulicamara con motocompresores o motobombas de ultra alta presión o hidráulica, para comprimir gas o liquido a ultra lata presión, que van formadas por varias cámaras de distinto tamaño de modo concéntricas, donde cada cámara contiene en su interior cámaras menores, y entre cámaras van instalados motores o bombas que permiten introducir fluido cada vez a mayor presión hacia las cámaras interiores.
CN114082827A (zh) * 2021-11-09 2022-02-25 佛山市兴迪机械制造有限公司 薄型管材成形装置及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2837810A (en) * 1955-06-17 1958-06-10 Flexonics Corp Method of producing fittings
US5233854A (en) * 1992-05-11 1993-08-10 General Motors Corporation Press apparatus for hydroforming a tube
DE4309680A1 (de) * 1993-03-25 1994-09-29 Huber & Bauer Gmbh Vorrichtung zum Innenhochdruckumformen eines rohrförmigen Rohlings
US5445002A (en) * 1993-08-16 1995-08-29 Ti Corporate Services Limited Fill and pressurization apparatus
EP0995512B1 (fr) * 1998-10-08 2003-10-22 Alcan Technology & Management AG Méthode et dispositif pour étancher un profilé creux ou similaire pendant le formage à haute pression
JP3688921B2 (ja) * 1999-01-14 2005-08-31 日産自動車株式会社 液圧成形ノズルおよび液圧成形装置
US6279364B1 (en) * 1999-02-16 2001-08-28 Gary E. Morphy Sealing method and press apparatus
JP2001105043A (ja) * 1999-10-13 2001-04-17 Aida Eng Ltd 液圧バルジ成形装置のノズル

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527812A (zh) * 2011-12-26 2012-07-04 北京航空航天大学 一种管材自由胀形组合模具
CN104596858A (zh) * 2013-10-30 2015-05-06 上海汇众汽车制造有限公司 获取管材液压胀形基础性能参数的实验装置
CN104596858B (zh) * 2013-10-30 2017-06-06 上海汇众汽车制造有限公司 获取管材液压胀形基础性能参数的实验装置

Also Published As

Publication number Publication date
JP2002205126A (ja) 2002-07-23
KR20020038493A (ko) 2002-05-23
EP1208926B1 (fr) 2004-12-08
DE50104756D1 (de) 2005-01-13
EP1208926A3 (fr) 2003-07-09
DE10056610A1 (de) 2002-05-23
US20020056305A1 (en) 2002-05-16
ATE284281T1 (de) 2004-12-15
ES2233548T3 (es) 2005-06-16
US6591650B2 (en) 2003-07-15

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