EP2777843B1 - Method and device for the method for producing a cast workpiece - Google Patents

Method and device for the method for producing a cast workpiece Download PDF

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Publication number
EP2777843B1
EP2777843B1 EP13159480.6A EP13159480A EP2777843B1 EP 2777843 B1 EP2777843 B1 EP 2777843B1 EP 13159480 A EP13159480 A EP 13159480A EP 2777843 B1 EP2777843 B1 EP 2777843B1
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EP
European Patent Office
Prior art keywords
hollow body
tool
hollow
casting
transporting means
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.)
Not-in-force
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EP13159480.6A
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German (de)
French (fr)
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EP2777843A1 (en
Inventor
Daniel WLATZLAK
Michael Hoffmann
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to EP13159480.6A priority Critical patent/EP2777843B1/en
Priority to CN201480014674.5A priority patent/CN105121060A/en
Priority to PCT/EP2014/052797 priority patent/WO2014139748A1/en
Priority to US14/775,918 priority patent/US20160031000A1/en
Publication of EP2777843A1 publication Critical patent/EP2777843A1/en
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Publication of EP2777843B1 publication Critical patent/EP2777843B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/108—Installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels

Definitions

  • the invention relates to methods and apparatus for the method of manufacturing a cast workpiece.
  • cast workpieces in a wall can also have flow channels or hollow areas.
  • a tool may have a corresponding core which is to form the flow channel. This approach only allows simple straight channel shapes. Also, the channel length is limited because the core must be removed from the workpiece.
  • a common manufacturing process is such that a hollow body, which is intended to image the flow channel to be produced in the die-cast component, is produced as a pre-assembly component and inserted into the die-casting tool.
  • the enclosed in the die casting material encloses the hollow body, which remains in the wall of the die-cast component. Consequently, the prefabricated hollow body must have a quality, in particular dimensional accuracy, which corresponds to the end product.
  • a placement robot removes the hollow body by means of a gripper and guides the hollow body to the die casting tool.
  • a hollow end does not take the predetermined mounting position, then can be issued in the simplest case by a sensor on the die casting or the die casting an error message.
  • the die-casting mold undesirably cools. With lower deviations in shape, the die cast workpiece is produced, but then may not fit the channel dimensions. Then there is a missing part that can only be melted down.
  • a source of error may, for. B. are that the gripping tongs can hold the hollow body, but would be inserted obliquely into the die-casting tool by an unfortunate combination of shape errors of the hollow body.
  • An obvious idea could be seen in the fact that one provides the hollow body with tool surfaces over which the hollow body could be clearly grasped by the gripping tongs. Such tool surfaces would make the hollow body more expensive and would also have negative effects on the flow cross sections of a flow channel to be generated.
  • JP S59 144553 A is a device for a method for producing a cast component with a wall in the at least one hollow chamber is formed, known.
  • a hollow body forms a hollow chamber in a casting tool.
  • the casting tool is supplied with liquid material which encloses the hollow body.
  • a support device for the hollow body determines together with a cover the exact position of the hollow body. Between a lower box and the lid molding sand is introduced, which additionally fixes the hollow body. Subsequently, the support device is removed and reconnected the lower box, so that there is a free space, which is filled with the liquid workpiece.
  • the DE 102006 034 341 describes a method for producing a cast component with a cast-in tube in a lost mold and permanent mold casting process or a permanent mold casting process in which a solid core mold is stored in a split outer mold.
  • a separate pipe holder is integrated into the outer mold or the core mold.
  • the pipe is inserted into a holding portion of the pipe holder which has been formed so as to locally surround the outer circumference of the pipe at least partially and with little play, so that the pipe can expand in the axial direction during casting, but against displacements caused by the buoyancy forces of the liquid casting material secured in radial directions. Subsequently, the component is cast with the respective method.
  • a device for gripping a foundry core, in particular a sole core, with a tensioning device having clamping device wherein the core at least one recess, an opening, a passage or the like., In which or in which the clamping device engages with the clamping means.
  • the device is designed such that the clamping means are designed as preferably pressed against the inner wall of the core clamping jaws.
  • the object of the present invention is to remedy the manufacturing problem known from the prior art.
  • the position of the hollow body is defined. Should there be a problem with this method step, since the tube body can not be picked up by the transport means due to a faulty geometry, then another hollow body could be fed to the diecasting tool by using a second transport means which would be used at the same time or with a small time offset , It is assumed that hardly any two missing parts would occur in a timely manner. As a result, the feeding process into the die casting tool could be kept uninterrupted, so that no unnecessary cooling phases are to be tolerated on the die casting tool.
  • the hollow body is pulled into the means of transport. If the hollow body dimensional variations, then the hollow body can be absorbed by the pulling movement of the transport.
  • the positive guidance function of the means of transport ensures that slight deviations are compensated by the elastic body within limits.
  • the hollow body is moved by means of a sliding tool from the transport.
  • the sliding tool can on the one hand structurally simple to run and wear low high assembly forces.
  • the sliding tool is designed as a displaceable stop.
  • the transport means on guide surfaces on which rests the hollow body.
  • the device that moves the hollow body in the transport must take over no leadership function. Consequently, the gripping function and thus also the gripper for the insertion movement into the means of transport are simplified.
  • the guide surfaces on each other facing free cuts through which at least one angled portion of the hollow body can escape from the guide surfaces.
  • the transport means has at least one positive-locking surface, which cooperates with a form-fitting counter-surface of the transfer tool.
  • the transfer tool has a receiving profile for the contact surfaces of the hollow body. It thus always runs a defined transfer of the hollow body from the transport to the casting tool.
  • As connecting surfaces of the hollow body its two ends are preferably provided.
  • the device has a sensor which detects at least one movement parameter of the sliding tool. This makes it possible to detect whether a component is present at all in the means of transport and, in addition, the mounting position in the casting tool has been reached, for example by measuring an increase in force on the sliding tool.
  • a hollow body 1 which images the flow channel with its inner wall.
  • a hollow body 1 is produced, which envelops exactly the predetermined flow channel.
  • the hollow body 1 is preferably made of a metallic material.
  • the hollow body 1 is fed to a magazine 3, in which the hollow body 1 occupies a defined mounting position.
  • the magazine 3 In the magazine 3 are the z.
  • the hollow body 1 is received by a transport means 7.
  • the transport means has guide surfaces 9; 11, the two open guide grooves 13; 15 form.
  • the hollow body 1 is during the assembly movement in the casting tool 5 on the guide surfaces 9; 11, like the Fig. 2 shows.
  • the guide surfaces 9; 11 have mutually facing free cuts 17; 19, by the at least one angled portion 21 of the hollow body 1 from the guide surfaces 9; 11 and guide grooves 13; 15 can escape.
  • the angled region 21 is formed by a connecting web of the hollow body 1, the two parallel flow sections 23; 25 connects.
  • the hollow body 1 may also have a completely different body contour.
  • the guide surfaces 9; 11 form a hollow body 1 with a designated envelope from. Of course, in the design and the angular position of the guide surfaces 9; 11 a certain manufacturing tolerance of the hollow body 1 flowed.
  • the transport means 7 has at least one positive-locking surface 27, which can make a form-locking connection with a form-fitting counter-surface 29 of a transfer tool 31 as part of the casting tool 5.
  • the form-fitting surface is designed as a pin sleeve, which can engage in a receiving sleeve 31 as takeover tool.
  • the receiving sleeve centered on the pin sleeve of the transport 7. Since in the specific embodiment of the transport means 7 two pin sleeves are executed, the hollow body is guided relative to all spatial coordinates of the casting tool 5 defined.
  • the transfer tool 31 has a receiving profile 33 for connector body portions 35 of the hollow body 1.
  • the receiving profile 33 z. B. be designed as a simple bore, if it is assumed that the wall of the hollow body forms a simple circular ring cross-section at both ends.
  • the receiving profile 33 is a spigot on which the hollow body is pushed.
  • the method begins with the hollow body 1 being received by the transporting means 7.
  • the transport means 7 is brought into coincidence with the hollow body 1 and then pulled out of the magazine 3, in which the hollow body 1 has already taken the basic orientation, as in the cast part, by means of a gripper 37 in the transport 7.
  • the guide surfaces 9; 11 for an exact position of the hollow body 1 within the transport 7. Should the Hollow body 1 have slight angular errors, then the hollow body 1 can be drawn with its connecting portion 21 in the transport 7 and with the further retraction move the guide surfaces 9; 11 the hollow body 1 in the context of inherent elasticity.
  • the transport 7 can z. B. are picked up by a robot, which moves the transport means 7 to the open casting tool 5.
  • a robot which moves the transport means 7 to the open casting tool 5.
  • the positive-locking surface 27 of the transporting means 7 and the at least one interlocking counter-surface 29 ensure a positive connection of the transporting means 7 in the transfer tool 31 or the casting tool 5. If the positive connection is produced, then the hollow body 1 is moved by means of a displaceable stop 39 as a sliding tool from the transport means 7.
  • the connection body regions 35 of the hollow body 1 engage in the receiving profile 33 of the transfer tool 31.
  • the displacement movement of the stopper 39 can be monitored in a variety of ways. For example, a predetermined end position of the stop 39 can be detected with an optical sensor. If this predetermined end position is not reached, then it can be assumed that the hollow body 1 has not been correctly transferred to the casting tool 5. Also by means of a force measurement of the stop movement, the predetermined end position can be detected.
  • the transport means 7 With the transport means 7, the supply of the hollow body 1 runs starting from a parts supply, for. As the magazine, down to the casting tool 5 always controlled, so that a malposition of the hollow body 1 in the casting tool 5 is largely eliminated.
  • the casting tool can be closed and the liquid material can be supplied.

Description

Die Erfindung betrifft Verfahren und Vorrichtung für das Verfahren zur Herstellung eines Gusswerkstücks.The invention relates to methods and apparatus for the method of manufacturing a cast workpiece.

Generell können Gusswerkstücke in einer Wandung auch Strömungskanäle oder Hohlbereiche aufweisen. Bei einem Druckgussbauteil mit einem Hohlbereich oder mit einem Strömungskanal können z. B. zwei Herstellungswege beschritten werden.In general, cast workpieces in a wall can also have flow channels or hollow areas. In a die-cast component with a hollow region or with a flow channel z. B. two production routes are taken.

Bei einem exakt geraden Strömungskanal kann ein Werkzeug einen entsprechenden Kern aufweisen, der den Strömungskanal bilden soll. Diese Vorgehensweise lässt nur einfache gerade Kanalformen zu. Auch die Kanallänge ist beschränkt, da der Kern aus dem Werkstück entfernt werden muss.In a precisely straight flow channel, a tool may have a corresponding core which is to form the flow channel. This approach only allows simple straight channel shapes. Also, the channel length is limited because the core must be removed from the workpiece.

Ein verbreitetes Fertigungsverfahren sieht so aus, dass ein Hohlkörper, der den zu fertigenden Strömungskanal im Druckgussbauteil abbilden soll, als Vormontagebauteil hergestellt und in das Druckgusswerkzeug eingesetzt wird. Der in die Druckgussform eingeschlossene Werkstoff umschließt den Hohlkörper, der in der Wandung des Druckgussbauteils verbleibt. Folglich muss der vorgefertigte Hohlkörper eine Qualität, insbesondere Maßhaltigkeit aufweisen, die dem Endprodukt entspricht.A common manufacturing process is such that a hollow body, which is intended to image the flow channel to be produced in the die-cast component, is produced as a pre-assembly component and inserted into the die-casting tool. The enclosed in the die casting material encloses the hollow body, which remains in the wall of the die-cast component. Consequently, the prefabricated hollow body must have a quality, in particular dimensional accuracy, which corresponds to the end product.

Ein vorgefertigter Hohlkörper, insbesondere mit einer komplizierten räumlichen Ausgestaltung, unterliegt einer gewissen Fertigungstoleranz, die sich z. B. auch bei den Biegeradien widerspiegeln. Zwar werden Fehlteile nach Möglichkeit schon vor der Zuführung in den Produktionsablauf aussortiert, jedoch ist nicht jede maßliche Abweichung sogleich erfassbar. Im Produktionsablauf werden die Hohlkörper unsortiert angeliefert und einem Magazin zugeführt. Geringfügige Abweichungen würden bei der Zuführung in das Magazin ausgeglichen, so dass der Hohlkörper dann in das Magazin passt.A prefabricated hollow body, in particular with a complicated spatial configuration, is subject to a certain manufacturing tolerance, the z. B. also reflect at the bending radii. Although missing parts are sorted out, if possible, before being fed into the production process, not every dimensional deviation can be detected immediately. In the production process, the hollow bodies are delivered unsorted and fed to a magazine. Minor deviations would be compensated for in the magazine, so that the hollow body then fits into the magazine.

Im weiteren Produktionsablauf entnimmt ein Bestückungsroboter den Hohlkörper mittels einer Greifzange und führt den Hohlkörper zum Druckgusswerkzeug. Sollte z. B. der Hohlkörper aufgrund der Formabweichung nicht exakt in das Werkzeug einsetzbar sein, beispielsweise ein Hohlende nimmt nicht die vorbestimmte Montageposition ein, dann kann im einfachsten Fall durch eine Sensorik am Druckgusswerkzeug oder der Druckgussvorrichtung eine Fehlermeldung abgegeben werden. Infolgedessen vergrößert sich die Stillstandzeit zwischen zwei zu fertigenden Druckgussbauteilen, so dass z. B. die Druckgussform unerwünscht abkühlt. Bei geringeren Formabweichungen wird zwar das Druckgusswerkstück hergestellt, doch passen dann ggf. nicht die Kanalmaße. Dann liegt ein Fehlteil vor, das nur noch eingeschmolzen werden kann.In the further production process, a placement robot removes the hollow body by means of a gripper and guides the hollow body to the die casting tool. Should z. B. the hollow body due to the shape deviation can not be used exactly in the tool, for example, a hollow end does not take the predetermined mounting position, then can be issued in the simplest case by a sensor on the die casting or the die casting an error message. As a result, increases the downtime between two to be manufactured die-cast components, so that z. B. the die-casting mold undesirably cools. With lower deviations in shape, the die cast workpiece is produced, but then may not fit the channel dimensions. Then there is a missing part that can only be melted down.

Eine Fehlerquelle kann z. B. darin liegen, dass die Greifzange den Hohlkörper zwar fassen kann, aber durch eine unglückliche Kombination von Formfehlern der Hohlkörper schief in das Druckgusswerkzeug eingesetzt würde. Eine naheliegende Idee könnte man darin sehen, dass man den Hohlkörper mit Werkzeugflächen versieht, über die der Hohlkörper von der Greifzange eindeutig gefasst werden könnte. Derartige Werkzeugflächen würden den Hohlkörper nochmals verteuern und hätten auch negative Auswirkungen auf die Strömungsquerschnitte eines zu erzeugenden Strömungskanals.A source of error may, for. B. are that the gripping tongs can hold the hollow body, but would be inserted obliquely into the die-casting tool by an unfortunate combination of shape errors of the hollow body. An obvious idea could be seen in the fact that one provides the hollow body with tool surfaces over which the hollow body could be clearly grasped by the gripping tongs. Such tool surfaces would make the hollow body more expensive and would also have negative effects on the flow cross sections of a flow channel to be generated.

Aus der JP S59 144553 A ist eine Vorrichtung für ein Verfahren zur Herstellung eines Gussbauteils mit einer Wandung in der mindestens eine Hohlkammer eingeformt ist, bekannt. Dabei bildet ein Hohlkörper eine Hohlkammer in einem Gusswerkzeug ab. Dem Gusswerkzeug wird flüssiger Werkstoff zugeführt, der den Hohlkörper umschließt.From the JP S59 144553 A is a device for a method for producing a cast component with a wall in the at least one hollow chamber is formed, known. In this case, a hollow body forms a hollow chamber in a casting tool. The casting tool is supplied with liquid material which encloses the hollow body.

In der JP S59 144553 ist eine Tragvorrichtung für den Hohlkörper offenbart. Die Tragvorrichtung bestimmt zusammen mit einem Deckel die exakte Position des Hohlkörpers. Zwischen einem Unterkasten und dem Deckel wird Formsand eingeführt, der den Hohlkörper zusätzlich fixiert. Anschließend wird die Tragvorrichtung entfernt und der Unterkasten wieder angeschlossen, so dass ein Freiraum vorliegt, der mit dem flüssigen Werkstück aufgefüllt wird.In the JP S59 144553 a support device for the hollow body is disclosed. The support device determines together with a cover the exact position of the hollow body. Between a lower box and the lid molding sand is introduced, which additionally fixes the hollow body. Subsequently, the support device is removed and reconnected the lower box, so that there is a free space, which is filled with the liquid workpiece.

Die DE 102006 034 341 beschreibt ein Verfahren zum Herstellen eines gegossenen Bauteiles mit einem eingegossenen Rohr in einem Gießverfahren mit verlorenen Formen und Dauermodul oder einem Gießverfahren mit Dauerformen, bei welchem eine feste Kernform in einer geteilten Außenform gelagert wird. Um das Problem der Lageveränderung des Rohres während des Gießens des Bauteils zu lösen, wird in die Außenform bzw. die Kernform eine gesonderte Rohrhalterung integriert wird. Das Rohr wird in einen Halteabschnitt der Rohrhalterung eingesetzt, der derart ausgebildet wurde, dass er örtlich den Außenumfang des Rohres mindestens teilweise und mit geringem Spiel umgibt, so dass sich das Rohr beim Gießen in Achsrichtung ausdehnen kann, jedoch gegen durch die Auftriebskräfte des flüssigen Gussmaterials bedingte Verschiebungen in radialen Richtungen gesichert ist. Anschließend wird das Bauteil mit dem jeweiligen Verfahren gegossen.The DE 102006 034 341 describes a method for producing a cast component with a cast-in tube in a lost mold and permanent mold casting process or a permanent mold casting process in which a solid core mold is stored in a split outer mold. To solve the problem of the change in position of the tube during the casting of the component, a separate pipe holder is integrated into the outer mold or the core mold. The pipe is inserted into a holding portion of the pipe holder which has been formed so as to locally surround the outer circumference of the pipe at least partially and with little play, so that the pipe can expand in the axial direction during casting, but against displacements caused by the buoyancy forces of the liquid casting material secured in radial directions. Subsequently, the component is cast with the respective method.

Aus der DE 43 22 181 A1 ist eine Vorrichtung zum Greifen eines Gießereikerns, insbesondere eines Sohlenkerns, mit einer Spannmittel aufweisenden Spanneinrichtung bekannt, wobei der Kern mindestens eine Ausnehmung, eine Öffnung, einen Durchgang oder dgl. aufweist, in die bzw. in den die Spanneinrichtung mit den Spannmitteln eingreift. Zur automatischen Handhabung von Kernen, insbesondere zur vollautomatischen Paketierung, bei einfachster Konstruktion und unter Vermeidung einer Beschädigung der Kerne bei der Handhabung ist die Vorrichtung derart ausgebildet, dass die Spannmittel als gegen die Innenwandung des Kerns vorzugsweise formschlüssig drückbare Spannbacken ausgeführt sind.From the DE 43 22 181 A1 a device for gripping a foundry core, in particular a sole core, with a tensioning device having clamping device is known, wherein the core at least one recess, an opening, a passage or the like., In which or in which the clamping device engages with the clamping means. For automatic handling of cores, in particular for fully automatic packaging, with the simplest construction and avoiding damage to the cores during handling, the device is designed such that the clamping means are designed as preferably pressed against the inner wall of the core clamping jaws.

Die Aufgabe der vorliegenden Erfindung ist es, das aus dem Stand der Technik bekannte Fertigungsproblem zu beheben.The object of the present invention is to remedy the manufacturing problem known from the prior art.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst.According to the invention, the object is solved by the features of patent claim 1.

Schon außerhalb des Gusswerkzeugs ist die Position des Hohlkörpers definiert. Sollte es schon bei diesem Verfahrensschritt ein Problem auftreten, da der Röhrkörper aufgrund einer fehlerhaften Geometrie vom Transportmittel nicht aufgenommen werden kann, dann ließe sich durch den Einsatz eines zweiten Transportmittels, das zeitgleich oder mit einem geringen Zeitversatz eingesetzt würde, ein weiterer Hohlkörper dem Druckgusswerkzeug zuführen. Es wird davon ausgegangen, dass zeitnah wohl kaum zwei Fehlteile nacheinander auftreten würden. Folglich könnte der Zuführprozess in das Druckgusswerkzeug unterbrechungsfrei gehalten werden, so dass am Druckgusswerkzeug keine unnötigen Abkühlphasen hinzunehmen sind.Even outside the casting tool, the position of the hollow body is defined. Should there be a problem with this method step, since the tube body can not be picked up by the transport means due to a faulty geometry, then another hollow body could be fed to the diecasting tool by using a second transport means which would be used at the same time or with a small time offset , It is assumed that hardly any two missing parts would occur in a timely manner. As a result, the feeding process into the die casting tool could be kept uninterrupted, so that no unnecessary cooling phases are to be tolerated on the die casting tool.

Im Hinblick auf eine lückenlose definierte Montagebewegung des Hohlkörpers übernimmt das Übernahmewerkzeug vom Transportmittel die Führungsposition für die Phase, wenn der Hohlkörper im Gusswerkzeug seine vorbestimmte Montageposition erreicht hat.With regard to a gapless defined assembly movement of the hollow body takes over the transfer tool from the transport means the leading position for the phase when the hollow body has reached its predetermined mounting position in the casting mold.

Gemäß einem vorteilhaften Unteranspruch wird der Hohlkörper in das Transportmittel gezogen. Sollte der Hohlkörper maßliche Abweichungen aufweisen, dann kann der Hohlkörper durch die Zugbewegung vom Transportmittel aufgenommen werden. Die Zwangsführungsfunktion des Transportmittels sorgt dafür, dass geringfügige Abweichungen von dem in Grenzen elastischen Hohlkörper ausgeglichen werden.According to an advantageous subclaim, the hollow body is pulled into the means of transport. If the hollow body dimensional variations, then the hollow body can be absorbed by the pulling movement of the transport. The positive guidance function of the means of transport ensures that slight deviations are compensated by the elastic body within limits.

In weiterer vorteilhafter Ausgestaltung des Verfahrens wird der Hohlkörper mittels eines Schiebewerkzeugs aus dem Transportmittel bewegt. Das Schiebewerkzeug kann einerseits konstruktiv einfach ausgeführt werden und verschleißarm hohe Montagekräfte ausführen. In einer bevorzugten Ausführungsform ist das Schiebewerkzeug als ein verschiebbarer Anschlag ausgeführt.In a further advantageous embodiment of the method, the hollow body is moved by means of a sliding tool from the transport. The sliding tool can on the one hand structurally simple to run and wear low high assembly forces. In a preferred embodiment, the sliding tool is designed as a displaceable stop.

Bei einer Vorrichtung zur Durchführung des Verfahrens gemäß dem Nebenanspruch 4 weist das Transportmittel Führungsflächen auf, an denen der Hohlkörper anliegt. Damit muss die Vorrichtung, die den Hohlkörper in das Transportmittel bewegt, keine Führungsfunktion übernehmen. Folglich vereinfachen sich die Greiffunktion und damit auch der Greifer für die Einführbewegung in das Transportmittel.In a device for carrying out the method according to the independent claim 4, the transport means on guide surfaces on which rests the hollow body. Thus, the device that moves the hollow body in the transport must take over no leadership function. Consequently, the gripping function and thus also the gripper for the insertion movement into the means of transport are simplified.

In weiterer Ausgestaltung der Erfindung weisen die Führungsflächen einander zugewandte Freischnitte auf, durch die mindestens ein abgewinkelter Abschnitt des Hohlkörpers aus den Führungsflächen austreten kann. Der Vorteil dieser Maßnahme besteht darin, dass auch ein u-förmiger Hohlkörper durch eine einfache Zugbewegung in das Transportmittel bewegt werden kann.In a further embodiment of the invention, the guide surfaces on each other facing free cuts through which at least one angled portion of the hollow body can escape from the guide surfaces. The advantage of this measure is that even a U-shaped hollow body can be moved by a simple pulling movement in the transport.

Zum lückenlosen Transport und Übergabe des Hohlkörpers in das Gusswerkzeug weist das Transportmittel mindestens eine Formschlussfläche auf, die mit einer Formschlussgegenfläche des Übernahmewerkzeugs zusammenwirkt.For seamless transport and transfer of the hollow body into the casting tool, the transport means has at least one positive-locking surface, which cooperates with a form-fitting counter-surface of the transfer tool.

Des Weiteren weist das Übernahmewerkzeug ein Aufnahmeprofil für die Anschlussflächen des Hohlkörpers auf. Es läuft somit stets eine definierte Übergabe des Hohlkörpers vom Transportmittel an das Gusswerkzeug ab. Als Anschlussflächen des Hohlkörpers sind bevorzugt seine beiden Enden vorgesehen.Furthermore, the transfer tool has a receiving profile for the contact surfaces of the hollow body. It thus always runs a defined transfer of the hollow body from the transport to the casting tool. As connecting surfaces of the hollow body, its two ends are preferably provided.

Man kann vorsehen, dass die Vorrichtung eine Sensorik aufweist, die mindestens einen Bewegungsparameter des Schiebewerkzeugs erfasst. Damit lässt sich erkennen, ob in dem Transportmittel überhaupt ein Bauteil vorhanden ist und zusätzlich die Montageposition im Gusswerkzeug erreicht ist, indem zum Beispiel ein Kraftanstieg am Schiebewerkzeug gemessen wird.It can be provided that the device has a sensor which detects at least one movement parameter of the sliding tool. This makes it possible to detect whether a component is present at all in the means of transport and, in addition, the mounting position in the casting tool has been reached, for example by measuring an increase in force on the sliding tool.

Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to the following description of the figures.

Es zeigt:

Fig. 1
Transportmittel für die Zufuhr eines Hohlkörpers in ein Gusswerkzeug
Fig. 2
Schnittdarstellung zur Fig. 1
Fig. 3
Darstellung eines Teils des Verfahrensablaufs.
It shows:
Fig. 1
Transport means for the supply of a hollow body in a casting tool
Fig. 2
Sectional view of the Fig. 1
Fig. 3
Representation of part of the procedure.

Zur Herstellung eines Strömungskanals in einer Wandung eines Gussbauteils wird ein Hohlkörper 1 verwendet, der mit seiner Innenwandung den Strömungskanal abbildet. Dazu wird ein Hohlkörper 1 hergestellt, der exakt den vorbestimmten Strömungskanal einhüllt. Der Hohlkörper 1 besteht bevorzugt aus einem metallischen Werkstoff. Um den Herstellungsprozess zu vereinfachen, wird der Hohlkörper 1 einem Magazin 3 zugeführt, in dem der Hohlkörper 1 eine definierte Montageausgangsstellung einnimmt. In dem Magazin 3 stehen die z. B. u-förmigen Hohlkörper aufrecht. Für die Montagebewegung des Hohlkörpers in ein Gusswerkzeug 5 wird der Hohlkörper 1 von einem Transportmittel 7 aufgenommen.To produce a flow channel in a wall of a cast component, a hollow body 1 is used, which images the flow channel with its inner wall. For this purpose, a hollow body 1 is produced, which envelops exactly the predetermined flow channel. The hollow body 1 is preferably made of a metallic material. In order to simplify the manufacturing process, the hollow body 1 is fed to a magazine 3, in which the hollow body 1 occupies a defined mounting position. In the magazine 3 are the z. B. U-shaped hollow body upright. For the assembly movement of the hollow body in a casting tool 5, the hollow body 1 is received by a transport means 7.

In den Figuren 2 und 3 ist das Transportmittel 7 in verschiedenen Ansichten dargestellt. Für den speziellen Fall des u-förmigen Hohlkörpers 1 verfügt das Transportmittel über Führungsflächen 9; 11, die zwei offene Führungsnuten 13; 15 bilden. Der Hohlkörper 1 liegt während der Montagebewegung in das Gusswerkzeug 5 an den Führungsflächen 9; 11 an, wie die Fig. 2 zeigt. Die Führungsflächen 9; 11 weisen einander zugewandte Freischnitte 17; 19 auf, durch die mindestens ein abgewinkelter Abschnitt 21 des Hohlkörpers 1 aus den Führungsflächen 9; 11 bzw. Führungsnuten 13; 15 austreten kann. Der abgewinkelte Bereich 21 wird von einem Verbindungssteg des Hohlkörpers 1 gebildet, der zwei parallele Strömungsabschnitte 23; 25 verbindet. Selbstverständlich kann der Hohlkörper 1 auch eine völlig abweichende Körperkontur aufweisen. Die Führungsflächen 9; 11 bilden einen Hohlkörper 1 mit einer bestimmungsgemäßen Hüllkurve ab. Selbstverständlich ist in der Bemessung und der Winkelposition der Führungsflächen 9; 11 eine gewisse Fertigungstoleranz des Hohlkörpers 1 eingeflossen.In the FIGS. 2 and 3 the means of transport 7 is shown in different views. For the special case of the U-shaped hollow body 1, the transport means has guide surfaces 9; 11, the two open guide grooves 13; 15 form. The hollow body 1 is during the assembly movement in the casting tool 5 on the guide surfaces 9; 11, like the Fig. 2 shows. The guide surfaces 9; 11 have mutually facing free cuts 17; 19, by the at least one angled portion 21 of the hollow body 1 from the guide surfaces 9; 11 and guide grooves 13; 15 can escape. The angled region 21 is formed by a connecting web of the hollow body 1, the two parallel flow sections 23; 25 connects. Of course, the hollow body 1 may also have a completely different body contour. The guide surfaces 9; 11 form a hollow body 1 with a designated envelope from. Of course, in the design and the angular position of the guide surfaces 9; 11 a certain manufacturing tolerance of the hollow body 1 flowed.

Endseitig verfügt das Transportmittel 7 über mindestens eine Formschlussfläche 27, die mit einer Formschlussgegenfläche 29 eines Übernahmewerkzeugs 31 als Teil des Gusswerkzeugs 5 eine Formschlussverbindung eingehen kann. In dieser beispielhaften Ausgestaltung des Transportmittels 7 ist die Formschlussfläche als eine Zapfenhülse ausgeführt, die in eine Aufnahmehülse als Übernahmewerkzeug 31 eingreifen kann. Dabei zentriert die Aufnahmehülse die Zapfenhülse des Transportmittels 7. Da in dem konkreten Ausführungsbeispiel an dem Transportmittel 7 zwei Zapfenhülsen ausgeführt sind, ist der Hohlkörper bezogen auf alle Raumkoordinaten des Gusswerkzeugs 5 definiert geführt.At the end, the transport means 7 has at least one positive-locking surface 27, which can make a form-locking connection with a form-fitting counter-surface 29 of a transfer tool 31 as part of the casting tool 5. In this exemplary embodiment of the transport means 7, the form-fitting surface is designed as a pin sleeve, which can engage in a receiving sleeve 31 as takeover tool. In this case, the receiving sleeve centered on the pin sleeve of the transport 7. Since in the specific embodiment of the transport means 7 two pin sleeves are executed, the hollow body is guided relative to all spatial coordinates of the casting tool 5 defined.

Das Übernahmewerkzeug 31 verfügt über ein Aufnahmeprofil 33 für Anschlusskörperbereiche 35 des Hohlkörpers 1. Bei dem gezeigten Beispiel kann das Aufnahmeprofil 33 z. B. als eine einfache Bohrung ausgeführt sein, wenn man davon ausgeht, dass die Wandung des Hohlkörpers an beiden Enden einen einfachen Kreisringquerschnitt bildet. Man kann natürlich auch vorsehen, dass das Aufnahmeprofil 33 eine Zapfenform darstellt, auf das der Hohlkörper aufgeschoben wird.The transfer tool 31 has a receiving profile 33 for connector body portions 35 of the hollow body 1. In the example shown, the receiving profile 33 z. B. be designed as a simple bore, if it is assumed that the wall of the hollow body forms a simple circular ring cross-section at both ends. Of course, one can also provide that the receiving profile 33 is a spigot on which the hollow body is pushed.

Das Verfahren beginnt damit, dass der Hohlkörper 1 von dem Transportmittel 7 aufgenommen wird. Bevorzugt wird das Transportmittel 7 in Überdeckung mit dem Hohlkörper 1 gebracht und dann aus dem Magazin 3, in dem die Hohlkörper 1 bereits die Grundausrichtung eingenommen haben, wie im zu fertigenden Gussteil, mittels eines Greifers 37 in das Transportmittel 7 gezogen. Dabei sorgen die Führungsflächen 9; 11 für eine exakte Position des Hohlkörpers 1 innerhalb des Transportmittels 7. Sollte der Hohlkörper 1 geringfügige Winkelfehler aufweisen, dann kann der Hohlkörper 1 mit seinem Verbindungsabschnitt 21 in das Transportmittel 7 eingezogen werden und mit der weiteren Einzugsbewegung richten die Führungsflächen 9; 11 den Hohlkörper 1 im Rahmen der Eigenelastizität aus.The method begins with the hollow body 1 being received by the transporting means 7. Preferably, the transport means 7 is brought into coincidence with the hollow body 1 and then pulled out of the magazine 3, in which the hollow body 1 has already taken the basic orientation, as in the cast part, by means of a gripper 37 in the transport 7. The guide surfaces 9; 11 for an exact position of the hollow body 1 within the transport 7. Should the Hollow body 1 have slight angular errors, then the hollow body 1 can be drawn with its connecting portion 21 in the transport 7 and with the further retraction move the guide surfaces 9; 11 the hollow body 1 in the context of inherent elasticity.

Das Transportmittel 7 kann z. B. von einem Roboter aufgenommen werden, der das Transportmittel 7 zu dem offenen Gusswerkzeug 5 bewegt. Selbstverständliche wäre bei entsprechender Bauteilgröße auch eine händische Transportbewegung möglich. Wenn der Hohlkörper 1 in dem Transportmittel 7 die vorbestimmte Montageposition erreicht hat, dann sorgen die Formschlussfläche 27 des Transportmittels 7 und die mindestens eine Formschlussgegenfläche 29 für einen Formschluss des Transportmittels 7 in dem Übernahmewerkzeug 31 bzw. dem Gusswerkzeug 5. Wenn der Formschluss hergestellt ist, dann wird der Hohlkörper 1 mittels eines verschiebbaren Anschlags 39 als Schiebewerkzeug aus dem Transportmittel 7 bewegt. Die Anschlusskörperbereiche 35 des Hohlkörpers 1 greifen dabei in das Aufnahmeprofil 33 des Übernahmewerkzeugs 31.The transport 7 can z. B. are picked up by a robot, which moves the transport means 7 to the open casting tool 5. Of course, would be possible with appropriate component size and a manual transport movement. When the hollow body 1 has reached the predetermined mounting position in the transporting means 7, then the positive-locking surface 27 of the transporting means 7 and the at least one interlocking counter-surface 29 ensure a positive connection of the transporting means 7 in the transfer tool 31 or the casting tool 5. If the positive connection is produced, then the hollow body 1 is moved by means of a displaceable stop 39 as a sliding tool from the transport means 7. The connection body regions 35 of the hollow body 1 engage in the receiving profile 33 of the transfer tool 31.

Mittels einer Sensorik 41 kann die Verschiebebewegung des Anschlags 39 auf vielfältige Art und Weise überwacht werden. Z. B. kann mit einem optischen Sensor eine vorbestimmte Endposition des Anschlags 39 erfasst werden. Wird diese vorbestimmte Endposition nicht erreicht, dann ist davon auszugehen, dass der Hohlkörper 1 nicht korrekt an das Gusswerkzeug 5 übergeben wurde. Auch mittels einer Kraftmessung der Anschlagbewegung kann die vorbestimmte Endposition erkannt werden.By means of a sensor 41, the displacement movement of the stopper 39 can be monitored in a variety of ways. For example, a predetermined end position of the stop 39 can be detected with an optical sensor. If this predetermined end position is not reached, then it can be assumed that the hollow body 1 has not been correctly transferred to the casting tool 5. Also by means of a force measurement of the stop movement, the predetermined end position can be detected.

Mit dem Transportmittel 7 läuft die Zufuhr des Hohlkörpers 1 ausgehend von einem Teilevorrat, z. B. dem Magazin, bis in das Gusswerkzeug 5 stets kontrolliert ab, so dass eine Fehlstellung des Hohlkörpers 1 im Gusswerkzeug 5 weitestgehend eliminiert ist. Wenn der Hohlkörper 1 im Gusswerkzeug 5 fixiert ist, kann das Gusswerkzeug geschlossen und der flüssige Werkstoff zugeführt werden.With the transport means 7, the supply of the hollow body 1 runs starting from a parts supply, for. As the magazine, down to the casting tool 5 always controlled, so that a malposition of the hollow body 1 in the casting tool 5 is largely eliminated. When the hollow body 1 is fixed in the casting tool 5, the casting tool can be closed and the liquid material can be supplied.

Bezugszeichenreference numeral

11
Hohlkörperhollow body
33
Magazinmagazine
55
Gusswerkzeugcasting tool
77
TransportmittelMode of Transport
99
Führungsflächeguide surface
1111
Führungsflächeguide surface
1313
Führungsnutenguide
1515
Führungsnutenguide
1717
Freischnittecutouts
1919
Freischnittecutouts
2121
abgewinkelter Abschnittangled section
2323
Strömungsabschnittflow section
2525
Strömungsabschnittflow section
2727
FormschlussflächeForm-fit area
2929
FormschlussgegenflächePositive locking counter surface
3131
Übernahmewerkzeugtakeover tool
3333
AufnahmeprofilUp profile
3535
AnschlussköperbereichConnecting body area
3737
Greifergrab
3939
Anschlagattack
4141
Sensoriksensors

Claims (9)

  1. Method for producing a cast component with a wall in which at least one hollow chamber is formed, wherein a hollow body (1) that replicates the hollow chamber is introduced into a casting tool (5), and the casting tool is supplied with liquid material, which encloses the hollow body (1), wherein, for the installing movement into the casting tool (5), the hollow body (1) is taken up by a transporting means (7), in which the hollow body (1) is positively guided with its terminal body regions (35), characterized in that the hollow body (1) with its terminal body regions (35) is moved from the transporting means (7) into a take-over tool (31) as part of the casting tool (5).
  2. Method according to Claim 1, characterized in that the hollow body (1) is pulled into the transporting means (7).
  3. Method according to Claim 1, characterized in that the hollow body (1) is moved out of the transporting means (7) by means of a sliding tool (39).
  4. Device for a method for producing a cast component with a wall in which at least one hollow chamber is formed, wherein a hollow body (1) that replicates the hollow chamber is introduced into a casting tool (5), and the casting tool is supplied with liquid material, which encloses the hollow body (1), wherein, for the installing movement into the casting tool (5), the hollow body (1) is taken up by a transporting means (7), in which the hollow body (1) is positively guided with its terminal body regions (35), wherein the hollow body (1) with its terminal body regions (35) is moved from the transporting means (7) into a take-over tool (31) as part of the casting tool (5), characterized in that the transporting means (7) has guiding areas (9; 11), against which the hollow body lies.
  5. Device according to Claim 4, characterized in that the guiding areas (9; 11) have mutually facing clearances (17; 19), through which at least one angled-away portion (21) of the hollow body (1) can extend out of the guiding areas (9; 11).
  6. Device according to Claim 5, characterized in that the transporting means (7) has at least one form-fitting face (27), which interacts with a mating form-fitting face (29) of the take-over tool (31).
  7. Device according to Claim 5, characterized in that the take-over tool (31) has a receiving profile (33) for the terminal body regions (35) of the hollow body.
  8. Device according to Claim 5, characterized in that the sliding tool (39) is configured as a displaceable stop.
  9. Device according to Claim 8, characterized in that the device has a sensor unit (41), which senses at least one movement parameter of the sliding tool (39).
EP13159480.6A 2013-03-15 2013-03-15 Method and device for the method for producing a cast workpiece Not-in-force EP2777843B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13159480.6A EP2777843B1 (en) 2013-03-15 2013-03-15 Method and device for the method for producing a cast workpiece
CN201480014674.5A CN105121060A (en) 2013-03-15 2014-02-13 Method and device for producing a cast workpiece
PCT/EP2014/052797 WO2014139748A1 (en) 2013-03-15 2014-02-13 Method and device for producing a cast workpiece
US14/775,918 US20160031000A1 (en) 2013-03-15 2014-02-13 Method And Device For Producing A Cast Workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13159480.6A EP2777843B1 (en) 2013-03-15 2013-03-15 Method and device for the method for producing a cast workpiece

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EP2777843A1 EP2777843A1 (en) 2014-09-17
EP2777843B1 true EP2777843B1 (en) 2015-09-30

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US (1) US20160031000A1 (en)
EP (1) EP2777843B1 (en)
CN (1) CN105121060A (en)
WO (1) WO2014139748A1 (en)

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JP2022500046A (en) 2018-09-13 2022-01-04 エフ.ホフマン−ラ ロシュ アーゲーF. Hoffmann−La Roche Aktiengesellschaft Mutant DNA polymerase with improved strand replacement capacity

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144553A (en) * 1983-02-07 1984-08-18 Sumitomo Metal Ind Ltd Molding device of mold for embedding pipe by casting
JPS60133950A (en) * 1983-12-22 1985-07-17 Aisin Seiki Co Ltd Core setting device
CN85105915A (en) * 1985-08-05 1987-02-25 克莱因香林及贝克尔股份公司 The casting core box in loam core
DE4322181A1 (en) * 1993-06-29 1995-01-12 Hottinger Adolf Masch Device and method for gripping a foundry core, in particular a sole core
JPH09287517A (en) * 1996-04-22 1997-11-04 Unisia Jecs Corp Piston for internal combustion engine and its metal mold
US5979298A (en) * 1997-05-08 1999-11-09 Zellner Pistons, Llc Cooling gallery for pistons
KR100657374B1 (en) * 2005-06-28 2006-12-14 동서공업주식회사 Auto loading device of salt core for casting
DE102006034341A1 (en) * 2006-07-23 2008-01-31 Fritz Winter Eisengiesserei Gmbh & Co. Kg Method for producing a cast component with a cast-in pipe
US8210232B2 (en) * 2007-09-20 2012-07-03 GM Global Technology Operations LLC Lightweight brake rotor and components with composite materials
CN101417328A (en) * 2008-09-28 2009-04-29 浙江杭机铸造有限公司 Cylinder sand core type assemble
IT1396481B1 (en) * 2009-11-17 2012-12-14 Maprof Sas Di Renzo Moschini E C METHOD OF MANUFACTURE OF BODIES MONOLITHIC CABLES USING A PROCESS OF CASTING OR INJECTION MOLDING.
JP5916494B2 (en) * 2012-04-18 2016-05-11 日立オートモティブシステムズ株式会社 Manufacturing method of piston for internal combustion engine

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EP2777843A1 (en) 2014-09-17
WO2014139748A1 (en) 2014-09-18
CN105121060A (en) 2015-12-02
US20160031000A1 (en) 2016-02-04

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