EP0665072B1 - Device for high pressure forming - Google Patents
Device for high pressure forming Download PDFInfo
- Publication number
- EP0665072B1 EP0665072B1 EP94113101A EP94113101A EP0665072B1 EP 0665072 B1 EP0665072 B1 EP 0665072B1 EP 94113101 A EP94113101 A EP 94113101A EP 94113101 A EP94113101 A EP 94113101A EP 0665072 B1 EP0665072 B1 EP 0665072B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- ring
- top part
- lid
- pot
- 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
- 239000002184 metal Substances 0.000 claims abstract description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000011796 hollow space material Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- B21D26/039—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
- B21D26/047—Mould construction
Definitions
- the invention relates to a device for hydroforming a blank made of ductile metal in a mold having a mold cavity, the one Has lower part and an upper part, wherein one of these parts from the other part is arranged removable and liftable and lowerable on a frame and further as one Device, the lower part and the upper part together, a bayonet catch is provided with at least four hooks on one the horizontal outline of the tool including the circumference of the circle, which is represented by a relative to the tool rotatable ring in and out of engagement, and with a force application in the lower part and the upper part near their circumference.
- Such a device is known from FR-PS 1 370 852 for hydraulic Forming a lower or upper part of an ammunition box that is open on one side Sheet.
- the frame consists of a base plate, two columns and a crosshead.
- the upper part of the tool is firmly attached to the crosshead, which is the lower part held and raised by a hydraulic cylinder on the base plate and led on the two pillars.
- the top and bottom are from one over encompassing the edge of the upper part of the ring, the one mentioned with the lower part Bayonet lock forms.
- An arm protrudes radially outward from the ring; at this engages in a joint on the other hand articulated outside the column arrangement Hydraulic cylinder. This is the ring for opening and loosening the bayonet catch rotatable.
- a device for the internal high pressure forming of a tubular blank in a tool which has a lower part and a removable upper part and is arranged in a type of press frame in order to hold the lower part and the upper part together.
- the upper part can be raised and lowered in the press frame like the upper punch of a press.
- the press frame has to absorb large forces.
- the invention has for its object the particular construction effort to reduce device provided for reshaping a tubular blank.
- this purpose is achieved in that the device initially mentioned type said device is approximately cup-shaped and that Tool is inserted in it and that the said ring on one on the lifting and and lowerable part constituting, upper part of the tool attached lid is arranged and by with a tangential force component between the rest Cover and the ring acting hydraulic cylinder is rotatable.
- the hydraulic cylinders expediently overlap the other mentioned Cover and the ring with approximately radial extension hinged on the wings Ring on.
- the force attack becomes approximately tangential.
- the bayonet catch has at least eight hooks, preferably an uninterrupted row of hooks at all, and preferably the device then transmits the force in a ring-shaped manner to the lower part and the upper part.
- the annular or point-wise introduction of force close to the circumference allows force to be introduced further inside, for example the bottom of the lower part is supported over the entire surface and is pressed onto the top of the upper part over the entire surface.
- the tool can then also be smaller than the interior of the pot and also have a shape other than a circle, for example a rectangular, in particular a square.
- a tool for hydroforming a tubular blank 1 exists of a lower part 2 and an upper part 3, which are in the horizontal sectional plane 4 of the blank 1 together.
- the mold cavity 5 of the tool is schematized shown.
- the tool is inserted into a pot 7 provided with a lid 6.
- the side wall of the pot 7 has two recesses 12, through which pressure medium connections to the tubular blank 1 can be pushed.
- a ring of teeth 14 is worked out on the inside of the pot wall by a circumferential milling 13.
- the cover 6 consists of a cover plate 15 and a ring 16 enclosing it and projecting further downwards.
- the two parts are connected to one another by a simple ring bearing (not shown).
- the upper part 3 is attached to the cover plate 15.
- the ring 16 is rotatable relative to the cover plate by three hydraulic cylinders 17 and three rockers 18: the rockers 18 are articulated on the cover plate 15 and on the ring 16 in such a way that the connecting straight line between the two joints is approximately radially aligned on average, and the hydraulic cylinders 17 are articulated on the cover plate 15 and on the rocker arms 18 with an approximation of the tangential direction.
- FIG. 3 The arrangement described appears in FIG. 3 in a side view corresponding to the section according to FIG. 1, but largely covered and with modifications.
- the base 8, the cylinder 10, the plunger plate 11, the pot 7 and the cover 6 can be roughly recognized.
- the axes of the three inner joints of the rockers 18 are extended upwards as guide rods 22 and are slidably guided through the upper beam of a frame 23 which is in principle C-shaped and which represents the machine frame.
- the piston rod of a lifting cylinder 24 mounted in the upper beam of the frame extends as a pull rod 25 to a fastening 26 on the cover 6.
- the pressure medium connections that can be pushed forward to the tubular blank 1 are concealed. However, the relevant output and feed devices 27 and 28 are visible.
- the tubular blank 1 is inserted in brackets on the underside of the lid 6 and the upper part 3.
- the cover 6 with the upper part 3 hanging on it is then lowered by the lifting cylinder 24.
- the teeth 19 on the ring 16 of the lid slide down between the teeth 14 on the pot 7.
- the ring 16 is rotated by actuating the hydraulic cylinders 17.
- the bayonet catch which is the construction, is locked and the upper part 3 is held together with the lower part 2.
- the pressure medium connections are advanced and brought into connection with the tubular blank 1.
- the blank is expanded and pressed onto the wall of the mold cavity 5, which, as mentioned, is only shown schematically. This is how the shaped workpiece is created. After shaping, the processes described above are repeated in the reverse direction and sequence.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Innenhochdruckumformen eines Rohlings aus duktilem Metall in einem einen Formhohlraum aufweisenden Werkzeug, das ein Unterteil und ein Oberteil aufweist, wobei das eine dieser Teile von dem anderen Teil entfernbar und heb- und senkbar an einem Gestell angeordnet ist und ferner als eine Einrichtung, das Unterteil und das Oberteil zusammenhalten, ein Bajonettverschluß vorgesehen ist mit mindestens vier Verhakungen auf einem den waagerechten Umriß des Werkzeuges einschließenden Kreisumfang, die durch einen gegenüber dem Werkzeug verdrehbaren Ring in und außer Eingriff zu bringen sind, und mit einer Krafteinleitung in das Unterteil und das Oberteil nahe deren Umfang.The invention relates to a device for hydroforming a blank made of ductile metal in a mold having a mold cavity, the one Has lower part and an upper part, wherein one of these parts from the other part is arranged removable and liftable and lowerable on a frame and further as one Device, the lower part and the upper part together, a bayonet catch is provided with at least four hooks on one the horizontal outline of the tool including the circumference of the circle, which is represented by a relative to the tool rotatable ring in and out of engagement, and with a force application in the lower part and the upper part near their circumference.
Eine solche Vorrichtung ist aus der FR-PS 1 370 852 bekannt zum hydraulischen
Umformen eines einseitig offenen Unter- oder Oberteils eines Munitionskastens aus
Blech. Das Gestell besteht aus einer Grundplatte, zwei Säulen und einem Querhaupt.
Das Oberteil des Werkzeuges ist fest an dem Querhaupt angebracht, das Unterteil ist
durch einen auf der Grundplatte stehenden Hydraulikzylinder heb- und senkbar gehalten
und an den beiden Säulen geführt. Das Oberteil und das Unterteil sind von einem über
den Rand des Oberteils fassenden Ring umgriffen, der mit dem Unterteil den erwähnten
Bajonettverschluß bildet. Von dem Ring ragt ein Arm radial nach außen; an diesem
greift in einem Gelenk ein andererseits außerhalb der Säulenanordnung angelenkter
Hydraulikzylinder an. Damit ist der Ring zum Öffnen und Lösen des Bajonettverschlusses
drehbar. Such a device is known from FR-
Durch Benutzung bekannt ist eine Vorrichtung zum Innenhochdruckumformen eines
rohrförmigen Rohlings in einem Werkzeug, das ein Unterteil und ein abhebbares Oberteil
aufweist und in einer Art Pressengestell angeordnet ist, um das Unterteil und das
Oberteil zusammenzuhalten. Das Oberteil ist in dem Pressengestell heb- und senkbar
angeordnet wie der Oberstempel einer Presse.
Hier muß das Pressengestell große Kräfte aufnehmen.Known by use is a device for the internal high pressure forming of a tubular blank in a tool, which has a lower part and a removable upper part and is arranged in a type of press frame in order to hold the lower part and the upper part together. The upper part can be raised and lowered in the press frame like the upper punch of a press.
Here the press frame has to absorb large forces.
Der Erfindung liegt die Aufgabe zugrunde, den baulichen Aufwand einer insbesondere zum Umformen eines rohrförmigen Rohlings vorgesehenen Vorrichtung zu vermindern.The invention has for its object the particular construction effort to reduce device provided for reshaping a tubular blank.
Gemäß der Erfindung wird dieser Zweck dadurch erfüllt, daß bei einer Vorrichtung der eingangs genannten Art die genannte Einrichtung etwa topfförmig ausgebildet und das Werkzeug in sie eingesetzt ist und daß der genannte Ring an einem auf dem, das heb- und und senkbare Teil darstellenden, Oberteil des Werkzeugs angebrachten Deckel angeordnet ist und durch mit tangentialer Kraftkomponente zwischen dem übrigen Deckel und dem Ring wirkende Hydraulikzylinder verdrehbar ist.According to the invention, this purpose is achieved in that the device initially mentioned type said device is approximately cup-shaped and that Tool is inserted in it and that the said ring on one on the lifting and and lowerable part constituting, upper part of the tool attached lid is arranged and by with a tangential force component between the rest Cover and the ring acting hydraulic cylinder is rotatable.
Bei dieser Lösung werden die Kräfte nicht, wie in der letztgenannten Vorrichtung,
durch das zum Heben und Senken des Oberteils des Werkzeugs weiterhin erforderliche
Gestell aufgenommen, sondern unmittelbar an dem Werkzeug zwischen Unterteil und
Oberteil ausgeglichen. Mit dem verdrehbaren Ring läßt sich das Öffnen und Schließen
der Preßform verhältnismäßig einfach und schnell bewerkstelligen.
Die Betätigung des Ringes nicht, wie nach der FR-PS 1 370 852, von einer außerhalb
angeordneten festen Basis her, sondern von einem innerhalb des Ringes auf dem Oberteil
des Werkzeugs angebrachten Deckel aus, läßt dem Deckel mit dem Oberteil jegliche
Bewegungsfreiheit.In this solution, the forces are not absorbed by the frame, which is still required for lifting and lowering the upper part of the tool, as in the latter device, but are compensated directly on the tool between the lower part and the upper part. With the rotatable ring, the opening and closing of the mold can be accomplished relatively easily and quickly.
The actuation of the ring not, as in FR-
Zweckmäßigerweise greifen die Hydraulikzylinder über an dem genannten übrigen Deckel und dem Ring mit etwa radialer Erstreckung angelenkte Schwingen an dem Ring an. Der Kraftangriff wird dadurch etwa tangential.The hydraulic cylinders expediently overlap the other mentioned Cover and the ring with approximately radial extension hinged on the wings Ring on. The force attack becomes approximately tangential.
Die Krafteinleitung in das Unterteil und das Oberteil nahe deren Umfang und an mindestens
vier Stellen ist nötig, um das Werkzeug sicher geschlossen zu halten, das sich
beispielsweise zwischen nur zwei einander gegenüberliegenden Verbindungen aufbiegen
würde. Bevorzugt weist der Bajonettverschluß jedoch mindestens acht Verhakungen,
am besten überhaupt eine ununterbrochene Reihe von Verhakungen auf, und vorzugsweise
überträgt die Einrichtung dann die Kraft in das Unterteil und das Oberteil
durchgehend ringförmig.
Die ringförmige oder punktweise Krafteinleitung nahe dem Umfang läßt es aber zu, daß
auch weiter innen eine Krafteinleitung erfolgt, beispielsweise also der Boden des Unterteils
vollflächig unterstützt ist und auf die Oberseite des Oberteils vollflächig gedrückt
wird.
Insbesondere (aber nicht ausschließlich) kann dann das Werkzeug auch kleiner sein als
der Innenraum des Topfes und auch eine andere als die Kreisform haben, beispielsweise
eine rechteckige, insbesondere eine quadratische. The introduction of force into the lower part and the upper part close to their circumference and at least four points is necessary in order to keep the tool securely closed, which would bend, for example, between only two mutually opposite connections. Preferably, however, the bayonet catch has at least eight hooks, preferably an uninterrupted row of hooks at all, and preferably the device then transmits the force in a ring-shaped manner to the lower part and the upper part.
The annular or point-wise introduction of force close to the circumference, however, allows force to be introduced further inside, for example the bottom of the lower part is supported over the entire surface and is pressed onto the top of the upper part over the entire surface.
In particular (but not exclusively), the tool can then also be smaller than the interior of the pot and also have a shape other than a circle, for example a rectangular, in particular a square.
Weitere Maßnahmen, die zur vorteilhaften Ausgestaltung der Erfindung dienen können, sind in der folgenden Beschreibung eines Ausführungsbeispiels angeführt.Further measures that can be used for the advantageous embodiment of the invention are given in the following description of an exemplary embodiment.
Die Zeichnungen geben das Ausführungsbeispiel wieder.
- Fig. 1
- zeigt einen senkrechten Schnitt durch ein Werkzeug und eine Einrichtung, das Unterteil und das Oberteil des Werkzeugs zusammenzuhalten,
- Fig. 2
- zeigt eine Draufsicht auf die Anordnung nach Fig. 1 und
- Fig. 3
- zeigt die Gesamtanordnung des Werkzeugs und der Einrichtung in einem Gestell in Seitenansicht.
- Fig. 1
- shows a vertical section through a tool and a device for holding the lower part and the upper part of the tool together,
- Fig. 2
- shows a plan view of the arrangement of FIGS. 1 and
- Fig. 3
- shows the overall arrangement of the tool and the device in a frame in side view.
Ein Werkzeug zum Innenhochdruckumformen eines rohrförmigen Rohlings 1 besteht
aus einem Unterteil 2 und einem Oberteil 3, die in der waagerechten Schnittebene 4
des Rohlings 1 aneinanderschließen. Der Formhohlraum 5 des Werkzeuges ist schematisiert
dargestellt.A tool for hydroforming a
Das Werkzeug ist eingesetzt in einen mit einem Deckel 6 versehenen Topf 7.The tool is inserted into a
Der auf einem ringförmigen Unterbau 8 stehende Topf 7 untergreift das Unterteil 2 mit
einem nur ringförmigen Topfboden 9. In dem somit vorhandenen Hohlraum unter dem
Unterteil 2 ist eine durch einen Zylinder 10 heb- und senkbare Stößelplatte 11 angeordnet,
die die Anordnung von in das Werkzeug hineinwirkenden Stößeln erlaubt (nicht
dargestellt), etwa um nach der Hochdruckumformung eine Einsenkung in das Werkstück
zu drücken oder einen Hohlraum zur Formung eines Stutzens während der Hochdruckeinwirkung
langsam freizugeben o.a..
In der Verlängerung des rohrförmigen Rohlings 1 weist die Seitenwand des Topfes 7
zwei Ausnehmungen 12 auf, durch die hindurch Druckmittelanschlüsse an den rohrförmigen
Rohling 1 vorgeschoben werden können.
Oben ist an der Innenseite der Topfwandung durch eine umlaufende Einfräsung 13 ein
Kranz von Zähnen 14 herausgearbeitet.The
In the extension of the tubular blank 1, the side wall of the
A ring of
Der Deckel 6 besteht aus einer Deckelplatte 15 und einem diese einschließenden und
weiter nach unten ragenden Ring 16. Die beiden Teile sind durch ein nicht dargestelltes,
einfaches Ringlager miteinander verbunden. Das Oberteil 3 ist an der Deckelplatte
15 befestigt.
Der Ring 16 ist gegenüber der Deckelplatte verdrehbar durch drei Hydraulikzylinder 17
und drei Schwingen 18: Die Schwingen 18 sind an der Deckelplatte 15 sowie an dem
Ring 16 so angelenkt, daß die Verbindungsgerade zwischen den beiden Gelenken im
Mittel etwa radial ausgerichtet ist, und die Hydraulikzylinder 17 sind mit einer der Tangentialrichtung
möglichst angenäherten Ausrichtung an der Deckelplatte 15 und an den
Schwingen 18 angelenkt.The
The
An dem nach unten sich erstreckenden Abschnitt des Ringes 16 ist ein Kranz nach
außen gerichteter Zähne 19 angeformt, die sich beim Aufsetzen des Deckels 6 auf den
Topf 7 zwischen dessen Zähnen 14 nach unten bewegen und dann durch Verdrehen
des Ringes 16 unter die Zähne 14 geschoben werden, wobei durch Schrägflächen 20
an jeweils beiden Zähnen 14,19 eine Klemmkraft entsteht, mit der der Ring 16 auf
einen flanschartigen Absatz 21 des Oberteils 3 drückt. At the downwardly extending portion of the
Auf diese Weise werden das Unterteil 2 und das Oberteil 3 des Werkzeuges aneinandergepreßt
und zusammengehalten.
Die Stellkräfte für die Verriegelung werden innerhalb der Einheit Topf/Deckel/Werkzeug
ausgeglichen.
Der Ring 16 könnte auch mit der Deckelplatte 15 starr verbunden sein. Dann müßte
diese aber gleichfalls gegenüber dem Oberteil 3 verdreht werden.In this way, the
The actuating forces for locking are balanced within the pot / lid / tool unit.
The
Die beschriebene Anordnung erscheint in Fig. 3 in einer dem Schnitt gemäß Fig. 1 entsprechenden
Seitenansicht, jedoch weitgehend verdeckt und mit Abwandlungen. In
etwa zu erkennen sind der Unterbau 8, der Zylinder 10, die Stößelplatte 11, der Topf 7
und der Deckel 6.
Die Achsen der drei inneren Gelenke der Schwingen 18 sind als Führungsstangen 22
nach oben verlängert und durch den oberen Balken eines im Prinzip C-förmigen
Gestelles
23 verschieblich hindurchgeführt, das den Maschinenrahmen darstellt. In der Mitte
dazwischen erstreckt sich die Kolbenstange eines in dem oberen Balken des Gestelles
angebrachten Hubzylinders 24 als Zugstange 25 zu einer Befestigung 26 an dem
Deckel 6.
Die erwähnten zu dem rohrförmigen Rohling 1 vorschiebbaren Druckmittelanschlüsse
liegen verdeckt. Sichtbar sind jedoch die betreffenden Ausgangs- und Vorschubeinrichtungen
27 und 28.The arrangement described appears in FIG. 3 in a side view corresponding to the section according to FIG. 1, but largely covered and with modifications. The
The axes of the three inner joints of the
The pressure medium connections that can be pushed forward to the tubular blank 1 are concealed. However, the relevant output and
Der rohrförmige Rohling 1 wird jeweils bei angehobenem Deckel 6 und Oberteil 3 an
dessen Unterseite in Klammern eingesetzt. Der Deckel 6 mit dem an ihm hängenden
Oberteil 3 wird dann durch den Hubzylinder 24 abgesenkt. Die Zähne 19 am Ring 16
des Deckels gleiten zwischen den Zähnen 14 an dem Topf 7 hindurch nach unten.
Nach Aufsetzen des Oberteils 3 auf dem Unterteil 2 wird durch Betätigen der Hydraulikzylinder
17 der Ring 16 verdreht. In der bereits angegebenen Weise wird dadurch der
Bajonettverschluß, den die Konstruktion darstellt, verriegelt und das Oberteil 3 mit dem
Unterteil 2 zusammengehalten. Die Druckmittelanschlüsse werden vorgeschoben und
in Verbindung mit dem rohrförmigen Rohling 1 gebracht. Durch Einpressen von Hydraulikflüssigkeit
mit am Ende z.B. 6000 bar wird der Rohling aufgeweitet und an die Wand
des, wie gesagt, nur schematisch dargestellten Formhohlraumes 5 gepreßt. So entsteht
das geformte Werkstück.
Nach der Formgebung wiederholen sich die oben beschriebenen Abläufe in umgekehrter
Richtung und Reihenfolge.The tubular blank 1 is inserted in brackets on the underside of the
After placing the
After shaping, the processes described above are repeated in the reverse direction and sequence.
Claims (8)
- Device for the internal high pressure forming of a blank (1) of ductile metal in a tool which has a forming cavity (5) and has a bottom part (2) and a top part (3), one of these parts (2) being arranged so that it can be removed from the other part (3) and can be raised and lowered on a frame (23), and furthermore a bayonet closure (13-20) being provided as an apparatus (6, 7, 13-21) which holds the bottom part (2) and the top part (3) together, the said bayonet closure having at least four hooking points (14, 19) on a circumference which encloses the horizontal contour of the tool (2, 3), which hooking points can be engaged and disengaged by a ring (16) which is rotatable relative to the tool (2, 3), and having force introduction into the bottom part (2) and the top part (3) near to their circumference, characterized in that the said apparatus (6, 7, 13-21) is of approximately pot-shaped design (7), and the tool (2, 3) is inserted into it, and in that the said ring (16) is arranged on a lid (6), attached to the top part (3) of the tool, which top part constitutes the raisable and lowerable part, and can be turned by hydraulic cylinders (17) acting with a tangential force component between the remainder of the lid (15) and the ring (16).
- Device according to Claim 1, characterized by annular force introduction (9 and 21) into the bottom part (2) and the top part (3).
- Device according to Claim 1 or 2, characterized in that the hydraulic cylinders act on the ring by means of rockers (18) which are linked to the said remainder of the lid (15) and the ring (16) with an approximately radial extent.
- Device according to Claim 3, characterized in that the ring (16) presses directly onto the top part (3), preferably against a flange-like shoulder (21) of the top part (3).
- Device according to one of Claims 1 to 4, characterized in that the bayonet closure (13-20) has at least eight hooking points (14, 19), preferably an uninterrupted row of hooking points (14, 19).
- Device according to one of Claims 2 to 5, characterized in that the ring (16) engages with radially outwardly projecting teeth (19) below mating pieces (14) on the side wall of the pot (7).
- Device according to one of Claims 3 to 6, characterized in that the lid (6) is held in the frame (23) by a rod guide (22) and a connecting rod (25) which is preferably actuated hydraulically.
- Device according to one of Claims 2 to 7, characterized in that the workpiece (1) is held in clips on the top part (3) of the tool.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4402674 | 1994-01-29 | ||
DE4402674A DE4402674A1 (en) | 1994-01-29 | 1994-01-29 | Device for hydroforming |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0665072A1 EP0665072A1 (en) | 1995-08-02 |
EP0665072B1 true EP0665072B1 (en) | 1998-12-09 |
Family
ID=6508992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113101A Expired - Lifetime EP0665072B1 (en) | 1994-01-29 | 1994-08-23 | Device for high pressure forming |
Country Status (5)
Country | Link |
---|---|
US (1) | US5570602A (en) |
EP (1) | EP0665072B1 (en) |
JP (1) | JP3709894B2 (en) |
AT (1) | ATE174236T1 (en) |
DE (2) | DE4402674A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109232A1 (en) * | 2001-02-26 | 2002-09-12 | Konrad Schnupp | Work piece locking device for forming press has two comb-shaped locking elements engaging into each other |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3995281B2 (en) * | 1995-11-15 | 2007-10-24 | 臼井国際産業株式会社 | Fuel injection pipe for diesel engine and manufacturing method thereof |
DE19602490C2 (en) * | 1996-01-25 | 2002-07-18 | Huber & Bauer Gmbh | Device for hydroforming |
DE19705243A1 (en) | 1997-02-12 | 1998-08-13 | Huber & Bauer Gmbh | Clamping device for hydroforming tool |
DE10306161B4 (en) * | 2003-02-14 | 2005-02-17 | Daimlerchrysler Ag | Device for hydroforming workpieces |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR342356A (en) * | 1904-04-15 | 1904-09-06 | Carl Proett | Hydraulic press |
US2344779A (en) * | 1941-08-27 | 1944-03-21 | Hayes Mfg Corp | Machine for making hollow bodies |
US3005431A (en) * | 1955-11-10 | 1961-10-24 | Svenska Aeroplan Ab | Hydraulic press |
FR1370852A (en) * | 1963-07-19 | 1964-08-28 | E Mabille Ets | Monobloc metal ammunition box with external bosses obtained by hydraulic expansion |
US3391559A (en) * | 1965-11-10 | 1968-07-09 | Mc Donnell Douglas Corp | Diaphragm type hydraulic press |
DE2707152A1 (en) * | 1977-02-18 | 1978-08-24 | Inst Gidrodinamiki Sibirskogo | Steel chamber for explosive forming of workpieces - has sliding carriage to support article and explosive charge (CS 30.4.78) |
US4305270A (en) * | 1979-11-13 | 1981-12-15 | Kokovikhin Evgeny A | Hydrostatic pressing apparatus |
-
1994
- 1994-01-29 DE DE4402674A patent/DE4402674A1/en not_active Withdrawn
- 1994-08-23 AT AT94113101T patent/ATE174236T1/en not_active IP Right Cessation
- 1994-08-23 DE DE59407444T patent/DE59407444D1/en not_active Expired - Fee Related
- 1994-08-23 EP EP94113101A patent/EP0665072B1/en not_active Expired - Lifetime
- 1994-10-12 JP JP28237394A patent/JP3709894B2/en not_active Expired - Fee Related
-
1995
- 1995-01-19 US US08/375,486 patent/US5570602A/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109232A1 (en) * | 2001-02-26 | 2002-09-12 | Konrad Schnupp | Work piece locking device for forming press has two comb-shaped locking elements engaging into each other |
DE10109232C2 (en) * | 2001-02-26 | 2003-04-03 | Konrad Schnupp | Locking device for a forming press |
Also Published As
Publication number | Publication date |
---|---|
DE4402674A1 (en) | 1995-08-03 |
DE59407444D1 (en) | 1999-01-21 |
JP3709894B2 (en) | 2005-10-26 |
ATE174236T1 (en) | 1998-12-15 |
JPH07214187A (en) | 1995-08-15 |
US5570602A (en) | 1996-11-05 |
EP0665072A1 (en) | 1995-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69014952T2 (en) | Hydraulic press tool with a head with endless rotation. | |
DE2166837C3 (en) | Insertion device for producing a container wall closure | |
DE69025597T2 (en) | DEVICE AND METHOD FOR HYDROFORMING METAL PLATES | |
DE2532561C2 (en) | Device for connecting at least two workpieces by cutting, pressing and upsetting | |
DE2142570B2 (en) | Mechanical powder press, in particular metal powder press | |
DE3343623A1 (en) | FORGING PRESS AND CONTROL FOR THIS | |
DD270505A5 (en) | METHOD AND DEVICE FOR CONSTRUCTING A CONTAINER | |
DE2247070A1 (en) | TOOL HOLDER FOR PUNCHING TOOLS AND THE LIKE | |
EP0940199A3 (en) | Device for the hydraulic forming of hollow metallic bodies | |
EP0665072B1 (en) | Device for high pressure forming | |
EP2719504B1 (en) | Tension device for straining a threaded bolt | |
DE19955519B4 (en) | Forming press for the pressure-medium-based forming of flat or hollow workpieces, esp. For the hydroforming of hollow blanks, preferably pipe sections | |
EP2873512A1 (en) | Method and device for stamping and connecting plastic pieces | |
DE19608486C1 (en) | Press for high internal pressure metal forming | |
DE3737417A1 (en) | BOERDEL DEVICE AND METHOD FOR THEIR USE | |
EP1355749A1 (en) | Method for the application of a function element to a mouldable metal piece using a high pressure moulding process, assembled piece and die | |
DE9412951U1 (en) | Device for hydroforming | |
DE2948396A1 (en) | TOOLING, IN PARTICULAR DRAWING TOOL WITH FIXED DRAWING STAMP IN THE TOOL BOTTOM | |
DE920847C (en) | Device for fastening a bung and tap hole screw connection | |
DE333096C (en) | Method and apparatus for producing a tight seal on bottles and the like. like | |
DE3620876C2 (en) | ||
DE3100854C2 (en) | ||
DE3534319A1 (en) | MULTI-STAGE FORGING PRESS | |
DE3929373A1 (en) | BOERDELKOPF | |
DE10010380B4 (en) | Press for turning and calibrating a workpiece |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IE IT LI NL PT SE |
|
17P | Request for examination filed |
Effective date: 19960127 |
|
17Q | First examination report despatched |
Effective date: 19961011 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ANTON BAUER WEKZEUG- UND MASCHINENBAU GMBH & CO. K |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB IE IT LI NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19981209 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19981209 |
|
REF | Corresponds to: |
Ref document number: 174236 Country of ref document: AT Date of ref document: 19981215 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 59407444 Country of ref document: DE Date of ref document: 19990121 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
ITF | It: translation for a ep patent filed | ||
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19990210 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990309 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990309 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19990309 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990823 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990831 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990831 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990831 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: ANTON BAUER WERKZEUG- UND MASCHINENBAU G.M.B.H. & Effective date: 19990831 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050808 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050811 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20051019 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060831 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070301 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060823 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20070430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060823 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070823 |