EP1388381B1 - Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern - Google Patents
Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern Download PDFInfo
- Publication number
- EP1388381B1 EP1388381B1 EP03017922A EP03017922A EP1388381B1 EP 1388381 B1 EP1388381 B1 EP 1388381B1 EP 03017922 A EP03017922 A EP 03017922A EP 03017922 A EP03017922 A EP 03017922A EP 1388381 B1 EP1388381 B1 EP 1388381B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- die
- groove
- double
- support plate
- 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 abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 abstract description 5
- 230000035508 accumulation Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- B21D26/033—Deforming tubular bodies
- B21D26/045—Closing or sealing means
Definitions
- the invention relates to a device for hydroforming of hollow bodies, comprising an at least two-part tool and this at both Side associated axial cylinder, which allows for forming as a double chamber profile present hollow bodies with sealing punches, passing through a groove into which the center bar of the double-chamber profile dips, in two on a common support plate adjacent stamp heads are divided, the ends of the in the Sealing the contour space of the tool with inserted double-chamber profile, wherein at least one sealing punch connected to a pressure medium source High-pressure bore (see, for example, DE-A-19 909 929).
- the hydroforming is well known and in the relevant Literature (see DE-Z “Werkstattechnik 79 (1989)", VDI progress reports, Series 2, No. 142, VDI-Verlag 1987). It is preferably for manufacturing differently shaped hollow body of a semifinished product, for example a tubular workpiece, applied.
- a pipe section e.g. made of steel or copper, is doing in a multi-part hydroforming without solid Inner die with sealing cams or forming rams actuated by axial cylinders inserted. After closing the ends of the pipe section by the sealing stamp is the pipe section by means of a suitable pressure medium with high Applied internal pressure and with simultaneous application of axial Pressure (by the seal) on the tube wall formed.
- the axial pressure and the internal pressure cause the pipe section to the the final Shape of the hollow body having inner contour or wall of the contour space of the forming tool applies.
- the invention is therefore based on the object in a device of the above mentioned type to create a sealing stamp without the disadvantages mentioned, thus, in particular, on the one hand extremely resistant to wear and on the other hand nevertheless offers sufficient sealing effect.
- the seal as Steel punches with one on the backing plate in transition to the foot area of the in Reference to the outer edge of the carrier plate inwardly recessed punch heads according to the contour of the punch heads circumferential sealing edge is formed, wherein the sealing edge in the groove bottom at each of the beginnings of Groove has a material accumulation.
- the sealing edge in Range only the beginnings of the groove and in the operating state so that except for the Groove between the part-punch heads in the groove engaging central web or the partition of the double-chamber profile with a slight grandeur due the accumulation of material is formed in this small area of the groove, can the seal perform as a very wear-resistant steel stamp.
- the Middle bar or the partition remains free as required over the length, where he but still at the beginning due to the low metallic material accumulation the sealing edge at the prevailing in the chambers of the profile internal pressure is pressed and sealed.
- FIG. 1 From a conventional hydroforming (IHU) machine are in Fig. 1 of simplicity half in a drawing once left and once right possible different Structures of a tool 1a and 1b shown.
- the tool 1a or 1b has a respective upper and lower provided with a clamping edge 2 Base plate 3 or 4.
- Base plate 3 or 4 In an upper and a lower basic block 5 and 6 respectively Contour inserts 7 and end inlet channels 8 are arranged.
- axial cylinder 10 On to the inlet channels 8 upstream brackets 9 axial cylinder 10 are fixed, in this Embodiment with on a sealing punch extension or a Sealing punch 11 arranged sealing die heads 12 are fitted, which when applying the axial cylinder 10 in a for forming in the mold cavity 13 inserted, to be formed hollow body-shaped workpiece in the inlet channels 8 dipping the tool sliding and sealing from both ends close.
- the axial cylinder 10 at their tool base blocks 5 and 6 facing ends a Adapter 16 with it screwed on clamping ring 16.
- the partial punch heads 20a, 20b are related on the outer edge 23 slightly inward, the thickness of the profile walls 18a, 18b arranged accordingly, set back and according to their contour with a circumferential - except the groove 21 itself - sealing step or edge 24 formed.
- the sealing edge 24 is with slight accumulations of material 26a, 26b, equating to a slight grandeur (See Figures 4 and 5). These ensure that the rest of his entire Length exposed center bar 19 only on its outer, to the profile walls 18a, 18b is sealed directly adjacent ends.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Description
- Fig. 1
- ein Systembild eines allgemein bekannten IHU-Werkzeuges, wobei hier in den beiden Symmetriehälften voneinander verschiedene Bauweisen dargestellt sind;
- Fig. 2
- als Einzelheit eines IHU-Werkzeugs in perspektivischer Ansicht einen zum Umformen von Doppelkammerprofilen eingesetzten Dichtstempel bzw. Stempelkopf;
- Fig. 3
- den Dichtstempel nach Fig. 2 von oben gesehen;
- Fig. 4
- den Dichtstempel nach Fig. 3 im Schnitt entlang der Linie IV-IV, eingetaucht in ein im Längsschnitt dargestelltes Doppel- bzw. Mehrkammperprofil; und
- Fig. 5
- in vergrößertem Maßstab die in Fig. 4 strichpunktiert eingekreiste Einzelheit "X".
Claims (1)
- Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern, umfassend ein mindestens zweiteiliges Werkzeug (1a, 1b) und diesem an beiden Seiten zugeordnete Axialzylinder (10), die zum Umformen von als Doppel- bzw. Mehrkammerprofil (17) vorliegenden Hohlkörpern mit Dichtstempeln, die durch eine Nut (21), in die der Mittelsteg (19) des Doppelkammerprofils (17) eintaucht, in zwei auf einer gemeinsamen Trägerplatte (22) nebeneinanderliegende Stempelköpfe (20a, 20b) unterteilt sind, die Enden des in den Konturraum des Werkzeugs (1a, 1b) eingelegten Doppelkammerprofils (17) dichtend verschließen, wobei zumindest ein Dichtstempel eine an eine Druckmittelquelle angeschlossene Hochdruckbohrung aufweist,
dadurch gekennzeichnet, daß der Dichtstempel (20) als Stahlstempel mit einer auf der Trägerplatte (22) im Übergang zum Fußbereich der in Bezug auf die Außenkante (23) der Trägerplatte (22) nach innen zurückversetzten Stempelköpfe (20a, 20b) entsprechend der Kontur der Stempelköpfe umlaufenden Dichtkante (24) ausgebildet ist, wobei die Dichtkante (24) im Nutgrund (25) an jeweils den Anfängen der Nut (21) eine Materialanhäufung (26a, 26b) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10236296A DE10236296B4 (de) | 2002-08-08 | 2002-08-08 | Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern |
DE10236296 | 2002-08-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1388381A1 EP1388381A1 (de) | 2004-02-11 |
EP1388381B1 true EP1388381B1 (de) | 2005-01-19 |
Family
ID=30128770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03017922A Expired - Lifetime EP1388381B1 (de) | 2002-08-08 | 2003-08-06 | Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1388381B1 (de) |
AT (1) | ATE287303T1 (de) |
DE (2) | DE10236296B4 (de) |
ES (1) | ES2236655T3 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50306648D1 (de) * | 2002-12-06 | 2007-04-12 | Thyssen Krupp Automotive Ag | Verfahren und Vorrichtung zum Innenhochdrukumformen |
DE102004058362B3 (de) * | 2004-12-03 | 2006-03-23 | Daimlerchrysler Ag | Verfahren und Vorrichtung zur Herstellung eines Mehrkammerprofils |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19511970C2 (de) * | 1995-04-18 | 1998-07-09 | Werdau Fahrzeugwerk | Verfahren zum Herstellen von verformten mehrwandigen Rohren mit Hohlräumen zwischen den Wandungen |
DE19513559C2 (de) * | 1995-04-18 | 1997-09-25 | Werdau Fahrzeugwerk | Vorrichtung zum Herstellen von verformten mehrwandigen Rohren mit einem oder mehreren Hohlräumen zwischen den Wandungen |
DE19909929C2 (de) * | 1999-03-06 | 2003-03-27 | Audi Ag | Verfahren zum Innenhochdruck-Umformen eines Hohlprofiles mit angeformtem Steg sowie Vorrichtung zur Durchführung des Verfahrens |
EP1170070B1 (de) * | 2000-07-05 | 2004-12-01 | Alcan Technology & Management AG | Vorrichtung zum Umformen eines Hohlprofils mittels Innenhochdruck-Umformens |
DE10056610A1 (de) * | 2000-11-15 | 2002-05-23 | Schuler Hydroforming Gmbh & Co | Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern |
-
2002
- 2002-08-08 DE DE10236296A patent/DE10236296B4/de not_active Expired - Fee Related
-
2003
- 2003-08-06 AT AT03017922T patent/ATE287303T1/de not_active IP Right Cessation
- 2003-08-06 ES ES03017922T patent/ES2236655T3/es not_active Expired - Lifetime
- 2003-08-06 DE DE50300265T patent/DE50300265D1/de not_active Expired - Lifetime
- 2003-08-06 EP EP03017922A patent/EP1388381B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE50300265D1 (de) | 2005-02-24 |
EP1388381A1 (de) | 2004-02-11 |
ATE287303T1 (de) | 2005-02-15 |
ES2236655T3 (es) | 2005-07-16 |
DE10236296B4 (de) | 2004-10-28 |
DE10236296A1 (de) | 2004-04-01 |
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