EP1208926B1 - Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern - Google Patents
Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern Download PDFInfo
- Publication number
- EP1208926B1 EP1208926B1 EP01124188A EP01124188A EP1208926B1 EP 1208926 B1 EP1208926 B1 EP 1208926B1 EP 01124188 A EP01124188 A EP 01124188A EP 01124188 A EP01124188 A EP 01124188A EP 1208926 B1 EP1208926 B1 EP 1208926B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- head
- workpiece
- tool
- cavity
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 2
- 238000007493 shaping process Methods 0.000 claims 2
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 235000013351 cheese Nutrition 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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, with those specified in the preambles of independent claims 1 and 3 Features as known from DE-A-43 09 680.
- Hydroforming is known in the prior art and in the relevant Literature described (see DE-Z “Werkstattechnik 79 (1989)", VDI progress reports, Row 2, No. 142, VDI Verlag 1987). It is preferred for producing differently shaped hollow bodies from a semi-finished product, for example a tubular workpiece.
- a Pipe section e.g. made of steel or copper, in a multi-part internal high pressure forming tool Without a fixed inner die with sealing plungers actuated by axial cylinders or forming rams inserted.
- 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 sealing plungers) is applied to the pipe wall reshaped.
- Axial pressure through the sealing plungers
- 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 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 mentioned type a simplified design of the sealing punch or head to enable.
- this object is achieved according to a first embodiment in that that the stop provides a sealing edge. Since this is the front edge of the workpiece to be formed, the stop represents the wearing part the multi-part sealing head assembly, and only this wear part needs to be replaced.
- the insertion piece is formed with a sealing edge.
- the specific location or location of the The course of the sealing edge on the insertion piece can be optimized by the Centering can be made dependent.
- 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 with it suitable materials. This offers good sliding properties of the sealing stamp or head in the inlet channel upstream of the workpiece to be formed of the tool.
- 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 plate 3 and 4.
- an upper and a lower base block 5 and 6 are the contour inserts 7 and end inlet channels 8 arranged.
- upstream brackets 9 On the inlet channels 8 upstream brackets 9 are Axial cylinder 10 attached to the on a seal extension or Sealing plunger 11 arranged sealing plunger heads 12 are equipped, which are applied when the axial cylinder 10 in 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 stamp 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 made into two by means of 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)
Description
- Fig. 1
- ein Systembild eines IHU-Werkzeuges mit in den beiden Symmetriehälften dargestellten, voneinander verschiedenen Bauweisen;
- Fig. 2
- als Einzelheit in vergrößerter Darstellung einen Axialzylinder mit Dichtstempel;
- Fig. 3
- im Längsschnitt eine Ausführung eines mehrteiligen Dichtkopfes;
- Fig. 4
- den Dichtkopf nach Fig. 3 von rechts gesehen; und
- Fig. 5
- als Teilansicht eine andere Ausführung eines Dichtkopfes, mit seiner Führungsaufnahme im Einlaufkanal des Werkzeugs aufliegend und in ein umzuformendes Werkstück eingreifend gezeigt.
Claims (3)
- Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern, umfassend ein mindestens zweiteiliges Werkzeug (1a bzw. 1b) und diesem an beiden Seiten zugeordnete Axialzylinder (10), die dazu geeignet sind, mit Dichtstempeln (111) die Enden des in den Konturraum des Werkzeugs eingelegten Hohlkörpers zu verschließen, wobei zumindest ein Dichtstempel (11) eine an eine Druckmittelquelle angeschlossene Hochdruckbohrung aufweist und wobei mindestens einer der Dichtstempel (11) mit einem von vorne lösbaren Dichtkopf (12; 112;212) versehen ist, der mindestens zweiteilig ist, aus einem voreilend angeordneten, mit einer Einlaufschräge (26) ausgebildeten Einführstück (22) sowie einer sich anschließenden Führungsaufnahme (24) besteht und einen zwischen dem Einführstück (22) und der Führungsaufnahme (24) angeordneten Anschlag (23) besitzt,
dadurch gekennzeichnet, daß der Anschlag (23) eine Dichtkante (28) bereitstellt. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Einführstück (22) und der Anschlag (23) gehärtet sind und die Führungsaufnahme (24) aus einem Material mit guten Zähigkeitseigenschaften und hoher Verschleißfestigkeit besteht. - Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern, umfassend ein mindestens zweiteiliges Werkzeug (1a bzw. 1 b) und diesem an beiden Seiten zugeordnete Axialzylinder (10), die dazu geeignet sind, mit Dichtstempeln (111) die Enden des in den Konturraum des Werkzeugs eingelegten Hohlkörpers zu verschließen, wobei zumindest ein Dichtstempel (11) eine an eine Druckmittelquelle angeschlossene Hochdruckbohrung aufweist und wobei mindestens einer der Dichtstempel (11) mit einem von vorne lösbaren Dichtkopf (12; 112;212) versehen ist, der mindestens zweiteilig ist, aus einem voreilend angeordneten, mit einer Einlaufschräge (26) ausgebildeten Einführstück (22) sowie einer sich anschließenden Führungsaufnahme (24) besteht und einen zwischen dem Einführstück (22) und der Führungsaufnahme (24) angeordneten Anschlag (23) besitzt,
dadurch gekennzeichnet, daß das Einführstück (22) mit einer Dichtkante (29) ausgebildet ist.
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 EP1208926A2 (de) | 2002-05-29 |
| EP1208926A3 EP1208926A3 (de) | 2003-07-09 |
| EP1208926B1 true EP1208926B1 (de) | 2004-12-08 |
Family
ID=7663396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01124188A Expired - Lifetime EP1208926B1 (de) | 2000-11-15 | 2001-10-11 | Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6591650B2 (de) |
| EP (1) | EP1208926B1 (de) |
| JP (1) | JP2002205126A (de) |
| KR (1) | KR20020038493A (de) |
| AT (1) | ATE284281T1 (de) |
| DE (2) | DE10056610A1 (de) |
| ES (1) | ES2233548T3 (de) |
Families Citing this family (12)
| 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 |
| 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 |
| US8910500B2 (en) | 2012-09-10 | 2014-12-16 | National Research Council Of Canada | Low friction end feeding in tube hydroforming |
| CA2845343A1 (en) * | 2013-03-15 | 2014-09-15 | Christopher Reid Kendall | Conductive exercise or sleep mat for grounding a user |
| 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 |
| 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)
| 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 (de) * | 1998-10-08 | 2003-10-22 | Alcan Technology & Management AG | Verfahren und Vorrichtung zum Abdichten eines Hohlprofils od.dgl. Werkstückes auf dem Wege des Innenhochdruck-Umformens |
| 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 |
-
2000
- 2000-11-15 DE DE10056610A patent/DE10056610A1/de not_active Withdrawn
-
2001
- 2001-10-11 EP EP01124188A patent/EP1208926B1/de not_active Expired - Lifetime
- 2001-10-11 AT AT01124188T patent/ATE284281T1/de not_active IP Right Cessation
- 2001-10-11 DE DE2001504756 patent/DE50104756D1/de not_active Expired - Lifetime
- 2001-10-11 ES ES01124188T patent/ES2233548T3/es not_active Expired - Lifetime
- 2001-11-05 US US10/007,505 patent/US6591650B2/en not_active Expired - Fee Related
- 2001-11-13 KR KR1020010070454A patent/KR20020038493A/ko not_active Withdrawn
- 2001-11-15 JP JP2001350311A patent/JP2002205126A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002205126A (ja) | 2002-07-23 |
| KR20020038493A (ko) | 2002-05-23 |
| DE50104756D1 (de) | 2005-01-13 |
| EP1208926A3 (de) | 2003-07-09 |
| DE10056610A1 (de) | 2002-05-23 |
| US20020056305A1 (en) | 2002-05-16 |
| ATE284281T1 (de) | 2004-12-15 |
| EP1208926A2 (de) | 2002-05-29 |
| ES2233548T3 (es) | 2005-06-16 |
| US6591650B2 (en) | 2003-07-15 |
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