EP2277642A1 - Tool and device for manufacturing of moulded parts - Google Patents
Tool and device for manufacturing of moulded parts Download PDFInfo
- Publication number
- EP2277642A1 EP2277642A1 EP09009256A EP09009256A EP2277642A1 EP 2277642 A1 EP2277642 A1 EP 2277642A1 EP 09009256 A EP09009256 A EP 09009256A EP 09009256 A EP09009256 A EP 09009256A EP 2277642 A1 EP2277642 A1 EP 2277642A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- workpiece
- tool part
- support blocks
- clocking
- 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
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 description 15
- 238000000465 moulding Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000011265 semifinished product Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
- B21D26/031—Mould construction
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- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/003—Simultaneous forming, e.g. making more than one part per stroke
Definitions
- the invention relates to a tool for the simultaneous high-pressure forming of at least two metallic workpieces according to the preamble of claim 1.
- the invention further relates to a device for the production of moldings according to the preamble of patent claim 7.
- the invention aims to remedy this situation.
- the invention is based on the object to provide a tool and an apparatus for the production of moldings, which allow for a compact design an increased production throughput. According to the invention, this object is achieved by a tool having the features of patent claim 1.
- a tool for high pressure forming of metallic workpieces is created, which allows for a compact design an increased production throughput.
- a supply line for pressurizing a workpiece with fluid under high pressure and the lower part of the tool facing side is provided with a Umformmatrize, is the simultaneous forming allows several mutually parallel workpieces. It has been found that the compressive forces applied to the intermediate tool part during the forming process essentially cancel each other out, so that the forces acting on the upper tool part and the lower tool part do not rise proportionally with the forming processes taking place inside the tool, but rather are only insignificantly changed. It follows that the traverses receiving the tool as well as the tie rods connecting them do not have to be dimensioned much larger, despite a significantly increased production throughput.
- the supply line of the tool lower part is connected to the supply line of the at least one intermediate tool part. This allows a similar pressurization of the workpieces located in the tool. Such a uniform pressurization causes a uniform pressurization of both sides of the at least one intermediate tool part, whereby the applied compressive forces are canceled against each other.
- the upper tool part and / or the lower tool part has a compensation plate, on which the Umformmatrize is arranged and controlled against the process pressure indicated bending direction of the Umformmatrize is bendable. In this way, a defined bending of the forming die opposite to the process pressure-indicated bend can be achieved, whereby the compensation of the process pressure-induced bending is effected.
- the compensation plate can be acted upon by a hydraulic plate with fluid pressure such that a bending of the compensation plate can be achieved.
- a well controllable bending of the compensation plate is made possible.
- the compensation plate is flat connected to a spacer plate, in which a hydraulic line is introduced, which opens into one of the spacer plate facing recess of the compensation plate.
- the stated object is further achieved by a device having the features of patent claim 7.
- the term "pressing module” is understood below to mean any device which is suitable for exerting a compressive force in the direction of the oppositely arranged traverse.
- the trusses have a substantially circular base formed, whereby a uniform introduction of the forming forces is ensured in the tie rods.
- the tie rods are cylindrical and provided at least one end with a clamping device.
- the upper traverse can be easily removed from the tie rods or attached to this, after which the tie rods are fixed to the tensioner on the crossbar.
- the tensioning device may be formed, for example, by a threaded portion of the tie rods, on which the tension is made possible by a nut. Any suitable device for releasably tensioning and fixing a tie rod is suitable.
- At least one traverse on an annular portion which receives a pressing module, wherein at least two support blocks are arranged, between which at least one passage is formed and over which the distance between the trusses is adjustable to each other.
- At least one annular portion of a traverse is formed as a separate support ring, which is positively connected to the traverse.
- a separate support ring By providing a separate support ring notch effects are avoided, as they occur when providing a cylindrical recess between the bottom and side walls of such a recess.
- the support ring Upon the occurrence of horizontally acting forces, the support ring can expand outwards, without causing damage to the cross-member positively connected to this support ring.
- the pressing module comprises at least one hydraulic cylinder.
- a position of the molded part is made possible to the tool.
- a short-stroke cylinder can be mounted on the cylinder piston. Such cylinders allow a defined employment of the molding to the tool and ensure that the tool is optimally closed during the forming process.
- the hydraulic cylinder is formed by an annular portion in which a piston is guided. This allows a compact design while minimizing components.
- the Traverse provided with an annular section also assumes the function of a cylinder housing.
- the traverse is provided with at least one cylinder bore for fluid supply of the hydraulic cylinder.
- the fluid performs two functions: firstly, it allows uniform pressurization of the piston carried in the cylinder; On the other hand, it forms a pressure pad between the cylinder / traverse and the piston and thus serves to decouple the traverse and the piston, which counteracts a deflection of the piston.
- At least two return cylinders for guiding the piston of the hydraulic cylinder are arranged.
- these return cylinders serve to displace the piston of the hydraulic cylinder within the cylinder housing, in particular the return cylinders are used to push the piston back into the starting position.
- the return cylinder serve the leadership of the piston of the hydraulic cylinder and thus prevent tilting and twisting of the piston.
- two substantially semicircular support blocks are arranged, between which a passage is formed suitable for clocking through a sheet to be formed.
- substantially quarter-circular ring-shaped support blocks are arranged, between which two passages are formed, of which at least one passage is suitable for clocking through a sheet to be formed.
- the support blocks are formed from a plurality of stacked, preferably plate-like sub-segments.
- a stepwise change in the height of the support blocks by adding or removing individual sub-segments is possible.
- the support blocks can also be segmented vertically.
- both bushings are suitable for clocking through a workpiece to be formed and the tool is designed such that a clocking of at least two superimposed, arranged at right angles to each other workpieces is possible.
- the continuous deformation of existing as a coil sheets of mutually offset feeds is possible, whereby an increased production throughput is possible with minimal space requirements.
- the chosen as an exemplary embodiment apparatus for the production of molded parts is designed for the process of hydroforming and comprises a housing 1, which is formed by two cylinder-like, oppositely arranged trusses 11, 12, which are circumferentially connected together by tie rods 13.
- the tie rods 13 are formed as cylindrical rods, which have at both ends - not shown - external thread which receive nuts 131 for clamping the tie rods 13.
- the tie rods may alternatively have an oval or polygonal cross-section.
- the trusses 11, 12 have centrally a circular shoulder 111, 121 for the positive reception of a circumferential support ring 2.
- the support rings 2 have an outer diameter identical to the crossbars 11, 12 and an inner diameter corresponding to the outer diameter of the shoulders 111, 121.
- a piston 4, 5 is arranged in each case, such that in cooperation with in each case one cross member 11, 12 with a arranged support ring 2, a hydraulic cylinder is formed. Traverse 11, 12 and support ring 2 thereby form the cylinder housing in which the piston 4, 5 is slidably guided.
- a cylinder bore 112, 122 is respectively centrally inserted, which serves to supply the hydraulic cylinder thus formed with hydraulic fluid.
- the cylinder bores 112, 122 are each connected to a - not shown - hydraulic line.
- only the lower provided with a cylinder bore 121 cross member 12 may be formed with the arranged on this support ring 2 in interaction with the piston 5 as a hydraulic cylinder and the upper cross member, which must have no cylinder bore 112, takes within the support ring 2 a Pressure pad, for example, a rubber pad on which the upper piston 4 is applied.
- the rubber cushion is the deflection compensation; a pressurization of the upper piston 4 in the direction of the opposite lower piston 5 is not carried out.
- the return cylinders 9 are used in the direction of the trusses 11, 12 directed return movement of the pistons 4, 5 within the support rings 2. In addition, over the back pressure cylinder 9 a Verdern the piston 4, 5 can be prevented within the support rings 2.
- a spacer plate 711, 721 of a hydroforming tool 7 is attached in each case.
- an additional short-stroke cylinder 6 can be arranged on the lower piston 5 (cf. Fig. 3 ), on which in turn the lower spacer plate 721 is mounted.
- an arrangement of an additional Kurzhubzylinders on upper piston 4 is possible.
- the hydroforming tool 7 consists essentially of an upper tool part 71 and a lower tool part 72, between which two intermediate tool parts 73 are arranged.
- the upper tool part 71 includes an upper spacer plate 711 to which a compensation plate 712 for deflection compensation is attached.
- the compensation plate 712 has on its side facing the spacer plate 711 centered on a surface recess 713 which is sealed by a seal 714 against the spacer plate 711 and in which a disposed within the spacer plate hydraulic line 715 opens.
- a Tool plate 716 is arranged, which has the contour to be formed in the workpiece.
- the lower tool part 72 includes a lower spacer plate 721 to which a compensation plate 722 for deflection compensation is attached.
- a compensation plate 722 for deflection compensation is attached in the embodiment according to FIG. 4 .
- the compensation plate 722 has on its side facing the spacer plate 721 in the middle a flat recess 723, which is sealed by a seal 724 against the spacer plate 721 and in which a disposed within the spacer plate 721 hydraulic line 725 opens.
- a hydraulic line 726 is arranged, which opens in a on its recess 723 opposite arranged second recess 727 of the compensation plate 722.
- the second, the upper mold half 71 facing recess 727 is sealed by a seal 728 during the forming process relative to the overlying workpiece to be machined.
- the seal can also be purely metallic, that is without seal 728 done.
- the depressions 713, 723, 727 are formed only very flat and serve the areal distribution of the fluid supplied via the hydraulic lines 715, 725, 726, whereby a pressure pad is formed.
- the tool intermediate part 73 is essentially formed from a tool plate 733 on which a pressure plate 732 is arranged.
- the tool plate 733 corresponds to the tool plate 716 of the upper tool part 71; the compensation plate 732 substantially corresponds to the pressure plate 722 of the tool lower part 72, but there is no flat depression on the side facing the tool plate 733.
- the lines 726, 736 of the compensation and pressure plates 722, 732 are in the exemplary embodiment via - not shown - flexible fluid lines connected to each other.
- the two intermediate tool parts 73 are mounted vertically displaceably on guide rods 731 in the exemplary embodiment, wherein between the upper tool part 71 and the adjacent intermediate tool part 73, between the lower tool part 72 and the adjacent intermediate tool part 73 and between the intermediate tool parts 73 each compression spring elements 735 are arranged.
- the compression spring elements 735 ensure a gap between the tool plates 716, 733 and the compensating or pressure plates 722, 732 which are respectively arranged opposite to them for inserting the workpieces to be deformed. Furthermore, they are slidably connected to the tool upper part 71 for guiding the tool intermediate parts 73 via laterally arranged drivers 730.
- the support rings 2 are in the embodiment according to FIG. 1 arranged two substantially semi-annular support blocks 3, which limit the distance between the two support rings 2 to each other by their height.
- a passage 30 for the passage of workpieces to be formed is formed (see Fig. 8).
- This passage 30 is suitable in the embodiment for clocking through slit strip.
- the support rings 2 are integrally formed on the trusses 11, 12.
- this embodiment involves the disadvantage of the notch effect, whereby the trusses 11, 12 are weakened inside in the transition to the support rings 2.
- the support blocks 3 are formed by stacked, plate-like sub-segments 31.
- an optimum adjustment of the working height between the pistons 4, 5 is adjustable.
- four quarter circular annular support blocks 3 are arranged, which in turn are formed of a plurality of stacked sub-segments 31.
- the arrangement of four quarter-ring-like support blocks two orthogonal to each other through holes 30 are formed, whereby a clocking from two sides is possible.
- the support blocks may alternatively also be designed such that a wide passage for the passage of workpieces through and a narrow passage, the two opposite openings of the additional processing, for example by means of laser can be used, are formed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Werkzeug zur gleichzeitigen Hochdruckumformung von wenigstens zwei metallischen Werkstücken nach dem Oberbegriff des Patentanspruchs 1. Die Erfindung betrifft weiterhin eine Vorrichtung zur Herstellung von Formteilen nach dem Oberbegriff des Patentanspruchs 7.The invention relates to a tool for the simultaneous high-pressure forming of at least two metallic workpieces according to the preamble of
Zur Herstellung von Werkstücken durch einen spanlosen Umformprozess werden üblicherweise Pressen verwendet, in denen Umformwerkzeuge eingesetzt sind, um einen Werkstückrohling aufzunehmen und diesen dann durch entsprechende Krafteinwirkung in die gewünschte Form zu bringen. Insbesondere im Bereich der Umformung von plattenförmigen Halbzeugen, wie beispielsweise Blechen, hat sich das Verfahren der Hochdruckumformung (engl. hydroforming) etabliert, welches sich durch große Gestaltungsfreiheit bei der Formgebung auszeichnet und sehr hohe Umformgrade ermöglicht. Dabei wird das Halbzeug mit sehr hohem Druck gegen ein Formwerkzeug gepresst, wodurch die Verformung erzielt wird. Hierbei entstehen große, in entgegengesetzter Richtung wirkende Kräfte, welche von einem Ständer aufgenommen werden müssen. Die quer zur Formteilung entstehenden Kräfte werden vom Hydroformwerkzeug aufgenommen. Dieser Ständer besteht in der Regel aus zwei gegenüberliegend angeordneten, im Wesentlichen rechteckig ausgebildeten Jochen, welche über Zuganker zusammengehalten werden.For the production of workpieces by a chipless forming process usually presses are used in which forming tools are used to receive a workpiece blank and then bring this by appropriate force into the desired shape. In particular, in the field of forming plate-shaped semi-finished products, such as sheet metal, the process of high pressure forming (English hydroforming) has established, which is characterized by great design freedom in the design and allows very high degrees of deformation. The semi-finished product is pressed with very high pressure against a mold, whereby the deformation is achieved. This creates large, acting in opposite directions forces that must be absorbed by a stand. The transverse to the mold division resulting Forces are absorbed by the hydroforming tool. This stand usually consists of two oppositely arranged, substantially rectangular yokes, which are held together by tie rods.
Nachteilig an den vorgenannten Pressen ist, dass diese auf Grund ihrer Bauweise und den erforderlichen Dimensionierungen durch die auftretenden Kräfte während des Umformprozesses sehr raumintensiv ausgebildet sind. Weiterhin ist der Produktionsdurchsatz dieser Pressen begrenzt.A disadvantage of the aforementioned presses that they are formed due to their design and the required dimensions by the forces occurring during the forming process very space intensive. Furthermore, the production throughput of these presses is limited.
Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zu Grunde, ein Werkzeug sowie eine Vorrichtung zur Herstellung von Formteilen zu schaffen, welche bei kompakter Bauweise einen gesteigerten Produktionsdurchsatz ermöglichen. Gemäß der Erfindung wird diese Aufgabe durch ein Werkzeug mit den Merkmalen des Patentanspruchs 1 gelöst.The invention aims to remedy this situation. The invention is based on the object to provide a tool and an apparatus for the production of moldings, which allow for a compact design an increased production throughput. According to the invention, this object is achieved by a tool having the features of
Mit der Erfindung ist ein Werkzeug zur Hochdruckumformung von metallischen Werkstücken geschaffen, welches bei kompakter Bauweise einen gesteigerten Produktionsdurchsatz ermöglicht. Durch das Vorsehen eines Werkzeugzwischenteils, welches sandwichartig zwischen Werkzeugoberteil und Werkzeugunterteil angeordnet ist und das an seiner dem Werkzeugoberteil zugewandten Seite eine Zuleitung zur Beaufschlagung eines Werkstücks mit Fluid unter hohem Druck aufweist und dessen dem Werkzeugunterteil zugewandten Seite mit einer Umformmatrize versehen ist, ist die gleichzeitige Umformung mehrerer parallel zueinander angeordneter Werkstücke ermöglicht. Dabei hat sich gezeigt, dass sich die beim Umformprozess beidseitig an dem Werkzeugzwischenteil anliegenden Druckkräfte im Wesentlichen aufheben, so dass die auf das Werkzeugoberteil und das Werkzeugunterteil einwirkenden Kräfte nicht proportional mit den innerhalb des Werkzeugs stattfindenden Umformprozessen ansteigen, sondern vielmehr nur unwesentlich verändert sind. Hieraus folgt, dass die das Werkzeug aufnehmenden Traversen sowie die diese verbindenden Zuganker trotz erheblich gesteigerten Produktionsdurchsatzes nicht wesentlich größer dimensioniert werden müssen.With the invention, a tool for high pressure forming of metallic workpieces is created, which allows for a compact design an increased production throughput. By providing an intermediate tool part which is sandwiched between the upper die part and the lower die part and which has on its side facing the tool upper part a supply line for pressurizing a workpiece with fluid under high pressure and the lower part of the tool facing side is provided with a Umformmatrize, is the simultaneous forming allows several mutually parallel workpieces. It has been found that the compressive forces applied to the intermediate tool part during the forming process essentially cancel each other out, so that the forces acting on the upper tool part and the lower tool part do not rise proportionally with the forming processes taking place inside the tool, but rather are only insignificantly changed. It follows that the traverses receiving the tool as well as the tie rods connecting them do not have to be dimensioned much larger, despite a significantly increased production throughput.
In Weiterbildung der Erfindung ist die Zuleitung des Werkzeugunterteils mit der Zuleitung des wenigstens einen Werkzeugzwischenteils verbunden. Hierdurch ist eine gleichartige Druckbeaufschlagung der in dem Werkzeug befindlichen Werkstücke ermöglicht. Eine solche gleichmäßige Druckbeaufschlagung bewirkt eine gleichmäßige Druckbeaufschlagung beider Seiten des wenigstens einen Werkzeugzwischenteils, wodurch die anliegenden Druckkräfte gegeneinander aufgehoben werden.In a development of the invention, the supply line of the tool lower part is connected to the supply line of the at least one intermediate tool part. This allows a similar pressurization of the workpieces located in the tool. Such a uniform pressurization causes a uniform pressurization of both sides of the at least one intermediate tool part, whereby the applied compressive forces are canceled against each other.
In Ausgestaltung der Erfindung weist das Werkzeugoberteil und / oder das Werkzeugunterteil eine Kompensationsplatte auf, auf der die Umformmatrize angeordnet ist und die gesteuert entgegen der prozessdruckindizierten Biegungsrichtung der Umformmatrize biegbar ist. Hierdurch ist eine definierte Biegung der Umformmatrize entgegengesetzten der prozessdruckindizierten Biegung erzielbar, wodurch die Kompensation der prozessdruckindizierten Biegung bewirkt ist.In an embodiment of the invention, the upper tool part and / or the lower tool part has a compensation plate, on which the Umformmatrize is arranged and controlled against the process pressure indicated bending direction of the Umformmatrize is bendable. In this way, a defined bending of the forming die opposite to the process pressure-indicated bend can be achieved, whereby the compensation of the process pressure-induced bending is effected.
In Weiterbildung der Erfindung ist die Kompensationsplatte über eine Hydraulikplatte derart mit Fluiddruck beaufschlagbar, dass eine Biegung der Kompensationsplatte erzielbar ist. Hierdurch ist eine gut steuerbare Biegung der Kompensationsplatte ermöglicht.In a further development of the invention, the compensation plate can be acted upon by a hydraulic plate with fluid pressure such that a bending of the compensation plate can be achieved. As a result, a well controllable bending of the compensation plate is made possible.
In Ausgestaltung der Erfindung ist die Kompensationsplatte flächig mit einer Distanzplatte verbunden, in der eine Hydraulikleitung eingebracht ist, welche in einer der Distanzplatte zugewandten Vertiefung der Kompensationsplatte mündet. Hierdurch ist die Bildung eines fluiden Druckkissens ermöglicht, wodurch ein über die Fläche gleichmäßiger Umformdruck erzielt ist.In an embodiment of the invention, the compensation plate is flat connected to a spacer plate, in which a hydraulic line is introduced, which opens into one of the spacer plate facing recess of the compensation plate. As a result, the formation of a fluid pressure pad is possible, whereby over the surface uniform forming pressure is achieved.
Die gestellte Aufgabe wird weiterhin durch eine Vorrichtung mit den Merkmalen des Patentanspruchs 7 gelöst. Unter dem Begriff "Pressmodul" wird nachfolgend jedwede Vorrichtung verstanden, die geeignet ist, eine Druckkraft in Richtung der gegenüberliegend angeordneten Traverse auszuüben. Bevorzugt weisen die Traversen eine im Wesentlichen kreisförmig gebildete Grundfläche auf, wodurch eine gleichmäßige Einleitung der Umformkräfte in die Zuganker gewährleistet ist. Bevorzugt sind die Zuganker zylinderförmig ausgebildet und an wenigstens einem Ende mit einer Spannvorrichtung versehen. Hierdurch ist ein einfaches Umrüsten der Vorrichtung ermöglicht. Die obere Traverse kann einfach von den Zugankern entfernt bzw. auf diesen angebracht werden, wonach die Zuganker mit der Spannvorrichtung an der Traverse fixierbar sind. Die Spannvorrichtung kann beispielsweise durch einen Gewindeabschnitt der Zuganker gebildet sein, auf dem die Verspannung über eine Mutter ermöglicht ist. Es ist jedwede Vorrichtung zur lösbaren Spannung und Fixierung eines Zugankers geeignet.The stated object is further achieved by a device having the features of
In Ausgestaltung der Erfindung weist wenigstens eine Traverse einen ringförmigen Abschnitt auf, der ein Pressmodul aufnimmt, wobei wenigstens zwei Stützblöcke angeordnet sind, zwischen denen wenigstens eine Durchführung gebildet ist und über die der Abstand zwischen den Traversen zueinander einstellbar ist. Hierdurch ist der Abstand der Traversen zueinander je nach Einsatzfeld optimal einstellbar.In an embodiment of the invention, at least one traverse on an annular portion which receives a pressing module, wherein at least two support blocks are arranged, between which at least one passage is formed and over which the distance between the trusses is adjustable to each other. As a result, the distance between the trusses is optimally adjusted to each other depending on the application field.
Bevorzugt ist wenigstens ein ringförmiger Abschnitt einer Traverse als separater Stützring ausgebildet, welcher mit der Traverse formschlüssig verbunden ist. Durch das Vorsehen eines separaten Stützrings sind Kerbenwirkungen vermieden, wie sie beim Vorsehen einer zylindrischen Ausnehmung zwischen Boden und Seitenwänden einer solchen Ausnehmung auftreten. Beim Auftreten von horizontal einwirkenden Kräften kann sich der Stützring nach außen ausdehnen, ohne dass es zu Beschädigungen der mit diesem Stützring formschlüssig verbundenen Traverse kommt.Preferably, at least one annular portion of a traverse is formed as a separate support ring, which is positively connected to the traverse. By providing a separate support ring notch effects are avoided, as they occur when providing a cylindrical recess between the bottom and side walls of such a recess. Upon the occurrence of horizontally acting forces, the support ring can expand outwards, without causing damage to the cross-member positively connected to this support ring.
In vorteilhafter Ausgestaltung umfasst das Pressmodul wenigstens einen hydraulischen Zylinder. Hierdurch ist eine Anstellung des Formteils an das Werkzeug ermöglicht. Auf dem Zylinderkolben kann zusätzlich ein Kurzhubzylinder montiert sein. Derartige Zylinder ermöglichen eine definierte Anstellung des Formteils an das Werkzeug und sorgen dafür, dass das Werkzeug während des Umformprozesses optimal verschlossen wird.In an advantageous embodiment, the pressing module comprises at least one hydraulic cylinder. As a result, a position of the molded part is made possible to the tool. In addition, a short-stroke cylinder can be mounted on the cylinder piston. Such cylinders allow a defined employment of the molding to the tool and ensure that the tool is optimally closed during the forming process.
In Ausgestaltung der Erfindung ist der hydraulische Zylinder durch einen ringförmigen Abschnitt gebildet, in dem ein Kolben geführt ist. Hierdurch ist eine kompakte Bauweise unter Minimierung von Bauteilen ermöglicht. Die mit einem ringförmigen Abschnitt versehene Traverse übernimmt zusätzlich die Funktion eines Zylindergehäuses.In an embodiment of the invention, the hydraulic cylinder is formed by an annular portion in which a piston is guided. This allows a compact design while minimizing components. The Traverse provided with an annular section also assumes the function of a cylinder housing.
Bevorzugt ist die Traverse mit wenigstens einer Zylinderbohrung zur Fluidversorgung des hydraulischen Zylinders versehen. Das Fluid erfüllt zwei Aufgaben: Zum Einen ermöglicht es eine gleichmäßige Druckbeaufschlagung des in dem Zylinder geführten Kolbens; zum Anderen bildet es ein Druckkissen zwischen Zylinder / Traverse und Kolben und dient so der Entkopplung von Traverse und Kolben, wodurch einer Durchbiegung des Kolbens entgegengewirkt wird.Preferably, the traverse is provided with at least one cylinder bore for fluid supply of the hydraulic cylinder. The fluid performs two functions: firstly, it allows uniform pressurization of the piston carried in the cylinder; On the other hand, it forms a pressure pad between the cylinder / traverse and the piston and thus serves to decouple the traverse and the piston, which counteracts a deflection of the piston.
Vorteilhaft sind wenigstens zwei Rückdrückzylinder zur Führung des Kolbens des hydraulischen Zylinders angeordnet. Diese Rückdrückzylinder dienen zum Einen der Verschiebung des Kolbens des hydraulischen Zylinders innerhalb des Zylindergehäuses, insbesondere werden die Rückdrückzylinder verwendet, um den Kolben in die Ausgangslage zurückzudrücken. Zum Anderen dienen die Rückdrückzylinder der Führung des Kolbens des hydraulischen Zylinders und verhindern so ein Verkanten und Verdrehen des Kolbens.Advantageously, at least two return cylinders for guiding the piston of the hydraulic cylinder are arranged. On the one hand, these return cylinders serve to displace the piston of the hydraulic cylinder within the cylinder housing, in particular the return cylinders are used to push the piston back into the starting position. On the other hand, the return cylinder serve the leadership of the piston of the hydraulic cylinder and thus prevent tilting and twisting of the piston.
In Ausgestaltung der Erfindung sind zwei im Wesentlichen halbkreisringförmig ausgebildete Stützblöcke angeordnet, zwischen denen eine Durchführung geeignet zum Durchtakten eines zu formenden Bleches gebildet ist. Hierdurch ist die kontinuierliche Verformung von als Coil vorliegenden Blechen ermöglicht.In an embodiment of the invention, two substantially semicircular support blocks are arranged, between which a passage is formed suitable for clocking through a sheet to be formed. As a result, the continuous deformation of existing as a coil sheets is possible.
In alternativer Ausgestaltung der Erfindung sind vier im Wesentlichen viertelkreisringförmig ausgebildete Stützblöcke angeordnet, zwischen denen zwei Durchführungen gebildet sind, von denen mindestens eine Durchführung geeignet zum Durchtakten eines zu formenden Bleches ist. Durch die zweite Durchführung ist eine Nachbearbeitung eines ausgeformten Teils, beispielsweise mittels Laser ermöglicht. Bei ausreichender Breite der zweiten Durchführung ist die Möglichkeit der Durchführung von Halbzeugen von zwei Seiten geschaffen, wodurch die Flexibilität der Vorrichtung weiter erhöht ist.In an alternative embodiment of the invention, four substantially quarter-circular ring-shaped support blocks are arranged, between which two passages are formed, of which at least one passage is suitable for clocking through a sheet to be formed. By the second implementation, a post-processing of a molded part, for example by means of laser allows. With sufficient width of the second implementation is the possibility the implementation of semi-finished products created from two sides, whereby the flexibility of the device is further increased.
In weiterer Ausgestaltung der Erfindung sind die Stützblöcke aus mehreren übereinander gestapelten, vorzugsweise plattenartigen Teilsegmenten gebildet. Hierdurch ist eine stufenweise Veränderung der Höhe der Stützblöcke durch Hinzufügung oder Entfernen einzelner Teilsegmente ermöglicht. Alternativ können die Stützblöcke auch vertikal segmentiert sein. In Weiterbildung der Erfindung sind beide Durchführungen geeignet zum Durchtakten eines umzuformenden Werkstücks und das Werkzeug ist derart ausgebildet, dass ein Durchtakten von wenigstens zwei übereinander zugeführten, rechtwinklig zueinander angeordneten Werkstücken ermöglicht ist. Hierdurch ist die kontinuierliche Verformung von als Coil vorliegenden Blechen von versetzt zueinander angeordneten Zuführungen ermöglicht, wodurch ein erhöhter Produktionsdurchsatz bei minimierten Raumerfordernissen ermöglicht ist.In a further embodiment of the invention, the support blocks are formed from a plurality of stacked, preferably plate-like sub-segments. As a result, a stepwise change in the height of the support blocks by adding or removing individual sub-segments is possible. Alternatively, the support blocks can also be segmented vertically. In development of the invention, both bushings are suitable for clocking through a workpiece to be formed and the tool is designed such that a clocking of at least two superimposed, arranged at right angles to each other workpieces is possible. As a result, the continuous deformation of existing as a coil sheets of mutually offset feeds is possible, whereby an increased production throughput is possible with minimal space requirements.
Andere Weiterbildungen und Ausgestaltungen der Erfindung sind in den übrigen Unteransprüchen angegeben. Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend im Einzelnen beschrieben. Es zeigen:
Figur 1- die schematische, räumliche Darstellung einer Vorrichtung zur Her- stellung von Formteilen;
Figur 2- die Darstellung der Vorrichtung aus
im Schnitt (ohne Werk- zeug);Figur 1 Figur 3- die Darstellung der Vorrichtung gemäß
Figur 2 mit zusätzlich ange- ordnetem Kurzhubzylinder; Figur 4- die schematische Darstellung des Hydroform-Etagenwerkzeugsat- zes der Vorrichtung aus
Figur 1 ; Figur 5- die schematische Darstellung einer Vorrichtung zur Herstellung von Formteilen mit einer Durchführung und mehrteiligen halbkreisförmi- gen Stützblöcken im Schnitt;
- Figur 6
- die Darstellung der Vorrichtung nach
Figur 5 mit zwei Durchführun- gen und mehrteiligen viertelkreisringförmigen Stützblöcken im Schnitt und Figur 7- die schematische Darstellung einer Vorrichtung nach
Figur 6 mit separatem Stützring und mehrteiligem viertelkreisförmigen Stütz- blöcken.
- FIG. 1
- the schematic, spatial representation of a device for the production of moldings;
- FIG. 2
- the representation of the device
FIG. 1 on average (without tools); - FIG. 3
- the representation of the device according to
FIG. 2 with additional short-stroke cylinder; - FIG. 4
- the schematic representation of the hydroform stack tool set of the device
FIG. 1 ; - FIG. 5
- the schematic representation of an apparatus for the production of moldings with a passage and multi-part halbkreisförmi- support blocks in section;
- FIG. 6
- the representation of the device according to
FIG. 5 with two passages and multi-part quarter-circle-shaped supporting blocks in section and - FIG. 7
- the schematic representation of a device according to
FIG. 6 with separate support ring and multi-part quarter-circle support blocks.
Die als Ausführungsbeispiel gewählte Vorrichtung zur Herstellung von Formteilen ist für das Verfahren der Innenhochdruckumformung ausgebildet und umfasst ein Gehäuse 1, welches durch zwei zylinderartig ausgebildete, gegenüberliegend angeordnete Traversen 11, 12 gebildet ist, die umlaufend über Zuganker 13 miteinander verbunden sind. Die Zuganker 13 sind als zylindrische Stäbe ausgebildet, welche zu beiden Enden ein - nicht dargestelltes - Außengewinde aufweisen, welche Muttern 131 zur Verspannung der Zuganker 13 aufnehmen. Die Zuganker können alternativ auch einen ovalen oder mehreckigen Querschnitt aufweisen.The chosen as an exemplary embodiment apparatus for the production of molded parts is designed for the process of hydroforming and comprises a
Die Traversen 11, 12 weisen zentrisch einen kreisrunden Absatz 111, 121 zur formschlüssigen Aufnahme eines umlaufenden Stützrings 2 auf. Die Stützringe 2 weisen einen mit den Traversen 11, 12 identischen Außendurchmesser auf sowie einen Innendurchmesser, der mit dem Außendurchmesser der Absätze 111, 121 korrespondiert.The
Innerhalb der Stützringe 2 ist jeweils ein Kolben 4, 5 angeordnet, derart, dass im Zusammenspiel mit jeweils einer Traverse 11, 12 mit angeordnetem Stützring 2 ein Hydraulikzylinder gebildet ist. Traverse 11, 12 und Stützring 2 bilden dabei das Zylindergehäuse, in dem der Kolben 4, 5 verschiebbar geführt ist. In die Traversen 11, 12 ist jeweils zentrisch eine Zylinderbohrung 112, 122 eingebracht, die der Versorgung des so gebildeten Hydraulikzylinders mit Hydraulikfluid dient. Hierzu sind die Zylinderbohrungen 112, 122 jeweils mit einer - nicht dargestellten - Hydraulikleitung verbunden.Within the support rings 2, a
In alternativer Ausgestaltung kann auch lediglich die untere mit einer Zylinderbohrung 121 versehene Traverse 12 mit dem an dieser angeordneten Stützring 2 im Zusammenspiel mit dem Kolben 5 als Hydraulikzylinder ausgebildet sein und die obere Traverse, die keine Zylinderbohrung 112 aufweisen muss, nimmt innerhalb des Stützrings 2 ein Druckkissen, beispielsweise ein Gummikissen auf, an dem der obere Kolben 4 anliegt. Hierbei dient das Gummikissen der Durchbiegungskompensation; eine Druckbeaufschlagung des oberen Kolbens 4 in Richtung des gegenüberliegenden unteren Kolbens 5 erfolgt nicht.In an alternative embodiment, only the lower provided with a
Zwischen den Kolben 4, 5 sind im Ausführungsbeispiel vier Rückdrückzylinder 9 angeordnet. Die Rückdrückzylinder 9 dienen der in Richtung der Traversen 11, 12 gerichteten Rückbewegung der Kolben 4, 5 innerhalb der Stützringe 2. Darüber hinaus kann über die Rückdrückzylinder 9 ein Verkannten der Kolben 4, 5 innerhalb der Stützringe 2 verhindert werden.Between the
An den Kolben 4, 5 ist jeweils eine Distanzplatte 711, 721 eines Hydroformwerkzeuges 7 befestigt. Zur Optimierung der Anstellung eines umzuformenden Werkstücks kann auf dem unteren Kolben 5 ein zusätzlicher Kurzhubzylinder 6 angeordnet sein (vgl.
Das Hydroformwerkzeug 7 besteht im Wesentlichen aus einem oberen Werkzeugteil 71 und einem unteren Werkzeugteil 72, zwischen denen zwei Werkzeugzwischenteile 73 angeordnet sind. Das obere Werkzeugteil 71 umfasst eine obere Distanzplatte 711, an der eine Kompensationsplatte 712 zur Durchbiegungskompensation angebracht ist. Die Kompensationsplatte 712 weist auf ihrer der Distanzplatte 711 zugewandten Seite mittig eine flächige Vertiefung 713 auf, die über eine Dichtung 714 gegenüber der Distanzplatte 711 abgedichtet ist und in der eine innerhalb der Distanzplatte angeordnete Hydraulikleitung 715 mündet. An ihrer der Distanzplatte 711 abgewandten Unterseite ist an der Kompensationsplatte eine Werkzeugplatte 716 angeordnet, welche die in das Werkstück einzuformende Kontur aufweist.The
Das Untere Werkzeugteil 72 umfasst eine untere Distanzplatte 721, an der eine Kompensationsplatte 722 zur Durchbiegungskompensation angebracht ist. Im Ausführungsbeispiel gemäß
Das Werkzeugzwischenteil 73 ist im Wesentlichen gebildet aus einer Werkzeugplatte 733, auf der eine Druckplatte 732 angeordnet ist. Die Werkzeugplatte 733 entspricht dabei der Werkzeugplatte 716 des Werkzeugoberteils 71; die Kompensationsplatte 732 entspricht im Wesentlichen der Druckplatte 722 des Werkzeugunterteils 72, wobei jedoch keine flächige Vertiefung an der der Werkzeugplatte 733 zugewandten Seite vorhanden ist.The tool
Die Leitungen 726, 736 der Kompensations- und Druckplatten 722, 732 sind im Ausführungsbeispiel über - nicht dargestellte - flexible Fluidleitungen miteinander verbunden. Die beiden Werkzeugzwischenteile 73 sind im Ausführungsbeispiel auf Führungsstangen 731 vertikal verschiebbar gelagert, wobei zwischen dem Werkzeugoberteil 71 und dem zu diesem benachbarten Werkzeugzwischenteil 73, zwischen dem Werkzeugunterteil 72 und dem zu diesem benachbarten Werkzeugzwischenteil 73 sowie zwischen den Werkzeugzwischenteilen 73 jeweils Druckfederelemente 735 angeordnet sind. Die Druckfederelemente 735 gewährleisten einen Spalt zwischen den Werkzeugplatten 716, 733 und den diesen jeweils gegenüberliegend angeordneten Kompensations- bzw. Druckplatten 722, 732 zum Einfügen der zu verformenden Werkstücke. Weiterhin sind zur Führung der Werkzeugzwischenteile 73 diese über seitlich angeordnete Mitnehmer 730 mit dem Werkzeugoberteil 71 verschieblich verbunden.The
Bei der Umformung von zwischen der oberen Werkzeughälfte 71 und dem Werkzeugzwischenteil 73, zwischen den beiden Werkzeugzwischenteilen 73 sowie dem Werkzeugzwischenteil 73 und der unteren Werkzeughälfte 72 eingebrachten Werkstücken werden die Werkstücke über die Leitungen 726, 736 unter hohem Druck mit Fluid beaufschlagt und an die Kontur der Werkzeugplatten 716, 733 angepresst. Dabei sind die Kompensations- und Druckplatten 722, 732 über die Dichtungen 728, 738 gegenüber dem jeweiligen Werkstück abgedichtet. Mögliche durch den anliegenden Umformdruck bewirkte Durchbiegungen der Werkzeugplatte 716 können kompensiert werden, indem über die Leitung 715 die Kompensationsplatte 712 unter Druck mit einem Fluid beaufschlagt wird, wodurch eine Durchbiegung in oder entgegen der druckindizierten Richtung bewirkt ist (definierte Einstellbarkeit der Druckbiegung der Werkzeugplatte 716). Auf die Kompensationsplatte 722 des Werkzeugunterteils 72 wird über die flächige Vertiefung 723 ebenfalls eine kompensierende Gegenbiegung bewirkt.During the forming of between the upper tool half 71 and the
Zwischen den Stützringen 2 sind im Ausführungsbeispiel gemäß
Im Ausführungsbeispiel nach
Im Ausführungsbeispiel gemäß
Im Ausführungsbeispiel gemäß
Claims (15)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09009256A EP2277642B1 (en) | 2009-07-16 | 2009-07-16 | Tool and device for manufacturing of moulded parts |
ES09009256T ES2392010T3 (en) | 2009-07-16 | 2009-07-16 | Tool and device for manufacturing modeled parts |
PL09009256T PL2277642T3 (en) | 2009-07-16 | 2009-07-16 | Tool and device for manufacturing of moulded parts |
PCT/EP2010/003344 WO2011006557A1 (en) | 2009-07-16 | 2010-06-02 | Mould and device for producing shaped parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09009256A EP2277642B1 (en) | 2009-07-16 | 2009-07-16 | Tool and device for manufacturing of moulded parts |
Publications (2)
Publication Number | Publication Date |
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EP2277642A1 true EP2277642A1 (en) | 2011-01-26 |
EP2277642B1 EP2277642B1 (en) | 2012-09-05 |
Family
ID=41226004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP09009256A Active EP2277642B1 (en) | 2009-07-16 | 2009-07-16 | Tool and device for manufacturing of moulded parts |
Country Status (4)
Country | Link |
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EP (1) | EP2277642B1 (en) |
ES (1) | ES2392010T3 (en) |
PL (1) | PL2277642T3 (en) |
WO (1) | WO2011006557A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5249946A (en) * | 1991-03-08 | 1993-10-05 | James River Corporation Of Virginia | Plate forming die set |
JPH07116748A (en) * | 1993-10-26 | 1995-05-09 | Sky Alum Co Ltd | Method and device for forming super-plastic metallic sheet |
DE19525085A1 (en) * | 1995-07-10 | 1997-01-16 | Daimler Benz Ag | Multiple arrangement of internal high pressure reshaping tools in press - comprises reshaping tools stacked one above other, with uppermost tool attached to press ram, and lowermost tool attached to press bed |
US6170309B1 (en) * | 1999-11-23 | 2001-01-09 | Dana Corporation | Apparatus for simultaneously performing multiple hydroforming operations |
DE19955518A1 (en) * | 1999-11-18 | 2001-05-31 | Siempelkamp Pressen Sys Gmbh | Multi-level forming tool for internal high pressure forming tool for esp. tube sections has tool inserts connected via and moved on guide pillars, and tool carrier plate |
US20030177801A1 (en) * | 2002-03-22 | 2003-09-25 | Korea Institute Of Science And Technology | Apparatus for superplastic forming |
-
2009
- 2009-07-16 EP EP09009256A patent/EP2277642B1/en active Active
- 2009-07-16 ES ES09009256T patent/ES2392010T3/en active Active
- 2009-07-16 PL PL09009256T patent/PL2277642T3/en unknown
-
2010
- 2010-06-02 WO PCT/EP2010/003344 patent/WO2011006557A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5249946A (en) * | 1991-03-08 | 1993-10-05 | James River Corporation Of Virginia | Plate forming die set |
JPH07116748A (en) * | 1993-10-26 | 1995-05-09 | Sky Alum Co Ltd | Method and device for forming super-plastic metallic sheet |
DE19525085A1 (en) * | 1995-07-10 | 1997-01-16 | Daimler Benz Ag | Multiple arrangement of internal high pressure reshaping tools in press - comprises reshaping tools stacked one above other, with uppermost tool attached to press ram, and lowermost tool attached to press bed |
DE19955518A1 (en) * | 1999-11-18 | 2001-05-31 | Siempelkamp Pressen Sys Gmbh | Multi-level forming tool for internal high pressure forming tool for esp. tube sections has tool inserts connected via and moved on guide pillars, and tool carrier plate |
US6170309B1 (en) * | 1999-11-23 | 2001-01-09 | Dana Corporation | Apparatus for simultaneously performing multiple hydroforming operations |
US20030177801A1 (en) * | 2002-03-22 | 2003-09-25 | Korea Institute Of Science And Technology | Apparatus for superplastic forming |
Also Published As
Publication number | Publication date |
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ES2392010T3 (en) | 2012-12-03 |
WO2011006557A1 (en) | 2011-01-20 |
PL2277642T3 (en) | 2013-02-28 |
EP2277642B1 (en) | 2012-09-05 |
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