EP1951457A1 - Method and apparatus for blowing out and/or for spraying dies of forging presses - Google Patents

Method and apparatus for blowing out and/or for spraying dies of forging presses

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Publication number
EP1951457A1
EP1951457A1 EP06818059A EP06818059A EP1951457A1 EP 1951457 A1 EP1951457 A1 EP 1951457A1 EP 06818059 A EP06818059 A EP 06818059A EP 06818059 A EP06818059 A EP 06818059A EP 1951457 A1 EP1951457 A1 EP 1951457A1
Authority
EP
European Patent Office
Prior art keywords
forging
spray
transport
lifting
transporthubbalken
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
Application number
EP06818059A
Other languages
German (de)
French (fr)
Other versions
EP1951457B1 (en
Inventor
Norbert Gober
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Eumuco GmbH
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Filing date
Publication date
Application filed by SMS Eumuco GmbH filed Critical SMS Eumuco GmbH
Publication of EP1951457A1 publication Critical patent/EP1951457A1/en
Application granted granted Critical
Publication of EP1951457B1 publication Critical patent/EP1951457B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J3/00—Lubricating during forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B21K27/04—Feeding devices for rods, wire, or strips allowing successive working steps

Definitions

  • the invention relates to a method and apparatus for blowing and / or spraying of above and / or below arranged dies of forging presses, in particular of drop forging presses, with an automatic workpiece transport through a provided with gripping device Transporthubbalken and a mechanical blowing and / or spraying device, the introduced into the tool room of the forging press and is returned from this again.
  • walking beam automatic In closed-die forging presses with automatic workpiece transport, it is customary to transport the workpieces from one processing station to the next processing station by means of a walking beam automatic.
  • various types of walking beam automatics are known in the art, e.g. From DE 37 21 694 C4 an automatic lifting beam with two parallel lifting bars, which are each provided with grippers to grab the workpieces between the walking beam, lift from the die and to be able to transport to the next processing station.
  • Another type of walking beam automatic works with only one walking beam, which is equipped with tongs.
  • A1 mobile spray nozzle devices which work in conjunction with the operation of the press ram in order to move spray nozzles in and out of the space between the driven apart upper and lower die parts.
  • This device which uses a carriage movable by means of a hydraulic or pneumatic actuator or a cam mechanism driven by the drive shaft of a feed device, requires an excessively long actuation time of 1.5 to 2 seconds on average to complete a work cycle, i.e. a cycle of operation. for a movement with a forward stroke and a backward stroke for introducing the spray nozzle device between the die parts and then leading out.
  • the invention is therefore an object of the invention to provide a method and an apparatus of the type mentioned above, which allow a faster, in particular to the cycle times of the automatic workpiece transport better adapted cooling and / or lubrication of the dies.
  • This object is achieved by a method according to the invention in that during the Transporthubbalken a manufactured in a previous forging process workpiece lifts and removed from the tool room, provided with a spraying lifting bar synchronously to lifting and Abtransportterrorism the Transporthubbens, but retracted independently of this in the tool room is, within the tool room the Spray devices operated and the forging dies are cooled konturnah and / or lubricated.
  • the spray bar can move at the same time already in the direction of the tool space between the open dies.
  • the spray bar is completely retracted with the spraying arranged on him in the tool room and it can be started immediately with the cooling and / or lubricating process.
  • the transport phase of the workpiece can be superimposed to one of the next processing stations from the beginning with the motion sequences for cooling and / or lubrication of the dies.
  • a preferred embodiment of the invention provides that the Sprühhubbalken performs a lowering movement and / or a downward movement within the tool room. In this way, the spraying can be positioned very close, with optimal distance to the tool surfaces or engraving of the dies.
  • the Transporthubbalken and the Sprühhubbalken be moved in opposite directions to each other.
  • an undisturbed movement can be achieved, because with the extension of the transport bar gradually the tool room is increasingly free for the same einfahrenden Sprühhubbalken.
  • the inventive method provides that the Transporthubbalken the recorded, forged workpiece during the Cooling and / or lubricating phase transported to a next processing station and stores there, then picks up a workpiece blank and transported into the tool room, synchronously to the sprayers are turned off and the spray bar moves out of the tool room.
  • This interaction between Maschinen Industriesabtransport to the next processing station, use of this transport phase for cooling and / or lubrication of the tools and transport a new workpiece blank in the processing station while retreating the sprayer from the tool room of this processing station is constantly repeated with the given depending on the desired production capacity of the forging clock frequency the continuously rotating automatic movement of the two walking beams coordinated in the movement sequence.
  • An apparatus for carrying out the method provides that the Transporthubbalken a separate, with temporarily operable sprayers trained Sprühhubbalken is assigned, the two lifting bars are synchronized via a Hubbalkenautomatik drivingly with opposite directions of motion and connected to their control to a common control and regulation device. Due to the synchronicity of the drives on the common servo-electric control and regulating device ensures that the two lifting beams, which are integrated into a provided for the automatic workpiece transport automatic lifting beam, start precisely at the same time with the predetermined by the automatic lifting beam movement.
  • the movements of the transporting beam and the spray-lifting beam required for the simultaneous transport of the workpieces and for cooling and / or lubricating the tools are different.
  • the spray lifting bar with its spraying device moves increasingly into the vacated tool room.
  • the automatic lifting beam in this case preferably operates with an electrohydraulic drive device, with which changes in the movement quantities, in the assignments of the movement of the individual movement axes relative to one another and changes in movement speeds in the individual movement axes can be controlled precisely.
  • an electro-hydraulic drive device can be provided.
  • the actuation of the lifting beam or the lifting beam automatic takes over the servo-electric control and regulating device in which the setpoint and actual values of the axes of movement of the lifting beams and of the entire pressing process are constantly recorded and processed.
  • Fig. 5, 5a in a schematic representation of movements of the transporting beam.
  • a drop forging press not shown in detail in FIGS. 1 to 4 has in a tool room 1 an upper tool holder 2 for receiving an upper tool with an upper die 3 and a lower tool holder 4 for receiving a lower tool with a lower die 5, the upper tool holder 2 for example is moved up and down by a press ram or stamp.
  • the automatic transport of a forged workpiece 6 from one processing station to the next processing station or from the die 5 to a following die 7 (see Fig. 5, 5a) is carried out by a Transporthubbalken 8, which is actuated by a drive device, not shown.
  • the Transporthubbalken 8 is equipped for secure gripping, holding and transporting the workpiece 6 with a gripper tongs 9.
  • a spray nozzle 10 Sprühhubbalken 11 for cooling and / or lubricating and / or blowing out of the upper and lower dies 3, 5 are arranged.
  • the spray-lifting bar 11 is also actuated by a drive device which is integrated in the automatic lifting beam automatic coordinating the movement sequence of the transporting lifting bar 8, but is independently programmable.
  • the automatic lifting beam is controlled by a control and regulating device 12, which constantly detects, compares and with the setpoint and actual values of the axes of movement of the transporting bar 8 and the spray bar 11 and the beginning and end of the pressing or forging process and the position of the press ram derived output signals from the undisturbed, automatic workpiece transport and the parallel occurring cooling and / or lubricating process of the upper and lower dies 3, 5 controls.
  • a control and regulating device 12 constantly detects, compares and with the setpoint and actual values of the axes of movement of the transporting bar 8 and the spray bar 11 and the beginning and end of the pressing or forging process and the position of the press ram derived output signals from the undisturbed, automatic workpiece transport and the parallel occurring cooling and / or lubricating process of the upper and lower dies 3, 5 controls.
  • Both the transport lifting beam 8 and the spray lifting beam 11 are in the standby position during a forging process outside the tool space 1 (see FIG. After the forging process has ended and the upper tool holder 2 has reached its upper rest position with the upper die 3, the Transporthubbalken 8 moves into the tool room 1, surrounds by means of its pliers 9, the previously forged workpiece 6, raises this and moves linearly out again the tool room 1 out (see Fig. 2, 3 and 4).
  • the course of the movements retracting 13, lifting 14 and extending 15 of the transporting beam 8 is shown schematically in FIG.
  • the Sprühhubbalken 11 moves with his both below as also above spray openings 16, 17 having spray nozzle 10 in the tool room 1 and performs a lifting and lowering movement 18, 19, in which the upper and the lower die 3, 5 blown konturnah and sprayed (see FIG. 4) ,
  • the transport lifting beam 8 continues its transport phase outside the tool room 1 and moves in a longitudinal movement with the workpiece 6 to the next processing station or to the next die 7 (see FIG. He performs there a transverse movement over the die center, places the workpiece 6 by means of a lowering movement in the die 7, leaves in a reverse transverse movement of the die 7 and performs a longitudinal movement back to the lower die 5 in the tool room 1.
  • the sequence of movements longitudinal transport 20, Retraction 21 via the die, lowering 22, extension 23 and longitudinal transport 24 back of the transporting beam is shown schematically in FIG.
  • FIG. 5 a shows that the longitudinal transport movement from the lower die 5 to the lower die 7 is subdivided into the movement sections 20 a, 20 b by a latching point 25.
  • This locking point 25 is a programmed breakpoint of the automatic lifting beam, at which the automatic sequence of the transport is interrupted.
  • the Sprühhubbalken 11 moves out of the tool room 1 addition, until it again assumes its out of the tool room 1 standby position. In this position, then the Transporthubbalken 8, after he has placed the workpiece in the dies 3, 5, moved back so that a new workpiece blank forged and the interplay between the transport phase to the next processing station and synchronous to the movement phase of the Sprühhubbalkens 11 for Cooling and / or lubricating the dies 3, 5 can repeat.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

In a method for blowing out and/or for spraying dies (3, 5), arranged at the top and/or bottom, of forging presses, in particular drop forging presses, comprising automatic workpiece transport by means of a transport lifting beam (8) provided with gripping devices (9) and comprising a mechanical blow-out and spray device (11; 10) which is introduced into the tool space (1) of the forging press and is withdrawn again from the latter, a spray lifting beam (11) provided with spray devices (10) is moved into the tool space (1) synchronously with the lifting and removal movement of the transport lifting beam (8), but independently of the latter, while the transport lifting beam (8) lifts a workpiece (6) produced in a preceding forging operation and removes it from the tool space (1), wherein the spray devices (10) are actuated within the tool space and the forging dies (3, 5) are lubricated and/or cooled close to the contour. An apparatus used for this purpose is distinguished by the fact that a separate spray lifting beam (11) formed with spray devices (10) that can be actuated temporarily is assigned to the transport lifting beam (8), wherein the drives of the two lifting beams (8; 11) are synchronized with opposed sequences of movement via an automatic lifting beam mechanism and the lifting beams (8; 11) are connected for their activation to a common open-loop and closed-loop control device (12).

Description

Verfahren und Vorrichtung zum Ausblasen und/oder Besprühen von Gesenken von SchmiedepressenMethod and apparatus for blowing and / or spraying dies of forging presses
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Ausblasen und/oder Besprühen von oben und/oder unten angeordneten Gesenken von Schmiedepressen, insbesondere von Gesenkschmiedepressen, mit einem automatischen Werkstücktransport durch einen mit Greifvorrichtung versehenen Transporthubbalken und einer mechanischen Ausblas- und/oder Sprühvorrichtung, die in den Werkzeugraum der Schmiedepresse eingebracht und aus diesem wieder zurückgeführt wird.The invention relates to a method and apparatus for blowing and / or spraying of above and / or below arranged dies of forging presses, in particular of drop forging presses, with an automatic workpiece transport through a provided with gripping device Transporthubbalken and a mechanical blowing and / or spraying device, the introduced into the tool room of the forging press and is returned from this again.
Bei Gesenkschmiedepressen mit einem automatischen Werkstücktransport ist es üblich, die Werkstücke von einer Bearbeitungsstation zur nächsten Bearbeitungsstation mittels einer Hubbalkenautomatik zu transportieren. Zum Werkstücktransport sind im Stand der Technik verschiedene Bauarten von Hubbalkenautomatiken bekannt, z.B. aus der DE 37 21 694 C4 eine Hubbalkenautomatik mit zwei parallelen Hubbalken, die jeweils mit Greifern versehen sind, um die Werkstücke zwischen den Hubbalken ergreifen, aus dem Gesenk heben und zur nächsten Bearbeitungsstation transportieren zu können. Eine weitere Bauart einer Hubbalkenautomatik arbeitet mit nur einem Hubbalken, der mit Greifzangen ausgerüstet ist.In closed-die forging presses with automatic workpiece transport, it is customary to transport the workpieces from one processing station to the next processing station by means of a walking beam automatic. For workpiece transport, various types of walking beam automatics are known in the art, e.g. From DE 37 21 694 C4 an automatic lifting beam with two parallel lifting bars, which are each provided with grippers to grab the workpieces between the walking beam, lift from the die and to be able to transport to the next processing station. Another type of walking beam automatic works with only one walking beam, which is equipped with tongs.
Bei der Durchführung des automatischen Werkstücktransportes mit den vorgenannten Hubbalkenautomatiken im Werkzeugraum einer Gesenkschmiedepresse gibt es keine zeitliche Lücke zwischen dem einen und dem anderen Schmiedeteil, sondern der Werkstücktransport erfolgt kontinuierlich. Es wird in der Regel in Belegung jeder zweiten Schmiedeoperation geschmiedet, d.h., daß während des automatischen Ablaufes nur jede zweite Gravur des Gesenks durch ein Werkstück belegt ist.In carrying out the automatic workpiece transport with the aforementioned Hubbalkenautomatiken in the tool room of a drop forging press there is no time gap between the one and the other forging, but the workpiece transport takes place continuously. It is usually forged in occupancy of every other forging operation, that is, during the automatic cycle only every second engraving of the die is occupied by a workpiece.
Das bei Umformmaschinen, die Werkstücke auf sich stetig wiederholende Weise fertigen, unerlässliche Ausblasen und/oder Sprühen der Gesenke kann in diesem Fall immer nur dann vorgenommen werden, wenn die Gesenke frei sind und gerade kein Pressenhub durchgeführt wird. Bekannte, elektrisch, pneumatisch oder hydraulisch gesteuerte und mit Sprühköpfen versehene Sprüharme können daher immer erst dann in den Werkzeugraum einfahren bzw. im Werkzeugraum stehen, wenn der Pressenstößel im oberen Totpunkt seine Ruhelage einnimmt. Dies bedeutet, daß von der sowieso nur kurz zur Verfügung stehenden Blas- und/oder Sprühzeit ein nicht unbeträchtlicher Teil durch Steuer- und Überwachungszeiten verloren geht. Eine solchermaßen betriebene Sprüharm-Vorrichtung ist aus der DE 32 30 095 C2 bekannt.In the case of forming machines, which produce workpieces in a constantly repeating manner, the necessary blowing out and / or spraying of the dies can be done in this Case can only be made when the dies are free and just no press stroke is performed. Known, electrically, pneumatically or hydraulically controlled and spray heads provided with spray arms can therefore only ever enter into the tool room or stand in the tool room when the press ram occupies its rest position at top dead center. This means that from the anyway only briefly available blowing and / or spraying a not inconsiderable part is lost through control and monitoring times. A thus operated Sprüharm device is known from DE 32 30 095 C2.
Durch die DE 38 44 262 A1 sind fahrbare Sprühdüsenvorrichtungen bekannt, die in zeitlicher Abstimmung mit der Betätigung des Pressenstößels arbeiten, um Sprühdüsen in den und aus dem Zwischenraum zwischen den auseinander gefahrenen oberen und unteren Gesenkteilen zu bewegen. Diese Vorrichtung, die einen mittels eines hydraulischen oder pneumatischen Stelltriebs verfahrbaren Wagen oder einen durch die Antriebswelle einer Vorschubeinrichtung angetriebenen Kurvenmechanismus verwendet, benötigt eine zu lange Betätigungszeit von durchschnittlich 1,5 bis 2 Sekunden für die Durchführung eines Arbeitszyklus, d.h. für eine Bewegung mit einem Vorwärtshub und einem Rückwärtshub zum Einführen der Sprühdüseneinrichtung zwischen die Gesenkteile und anschließendem Herausführen.By DE 38 44 262 A1 mobile spray nozzle devices are known, which work in conjunction with the operation of the press ram in order to move spray nozzles in and out of the space between the driven apart upper and lower die parts. This device, which uses a carriage movable by means of a hydraulic or pneumatic actuator or a cam mechanism driven by the drive shaft of a feed device, requires an excessively long actuation time of 1.5 to 2 seconds on average to complete a work cycle, i.e. a cycle of operation. for a movement with a forward stroke and a backward stroke for introducing the spray nozzle device between the die parts and then leading out.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, die eine schnellere, insbesondere an die Zykluszeiten des automatischen Werkstücktransportes besser angepasste Kühlung und/oder Schmierung der Gesenke ermöglichen.The invention is therefore an object of the invention to provide a method and an apparatus of the type mentioned above, which allow a faster, in particular to the cycle times of the automatic workpiece transport better adapted cooling and / or lubrication of the dies.
Diese Aufgabe wird mit einem Verfahren erfindungsgemäß dadurch gelöst, daß während der Transporthubbalken ein in einem vorhergehenden Schmiedevorgang hergestelltes Werkstück anhebt und aus dem Werkzeugraum abtransportiert, ein mit Sprüheinrichtungen versehener Hubbalken synchron zu Hub- und Abtransportbewegung des Transporthubbalkens, aber unabhängig von diesem in den Werkzeugraum eingefahren wird, innerhalb des Werkzeugraumes die Sprüheinrichtungen betätigt und die Schmiedegesenke konturnah gekühlt und/oder geschmiert werden. Bei dieser Verfahrensweise erfolgt der Zyklusstart des Transporthubbalkens und des Sprühhubbalkens aus ihrer jeweiligen Bereitschaftsstellung außerhalb der Gesenke heraus zeitgleich, während die nachfolgenden Längs- und Querbewegungen sowie die Aufwärts- und Senkbewegungen beider Hubbalken zwar im Ablauf koordiniert, aber völlig unabhängig voneinander ausgeführt werden können.This object is achieved by a method according to the invention in that during the Transporthubbalken a manufactured in a previous forging process workpiece lifts and removed from the tool room, provided with a spraying lifting bar synchronously to lifting and Abtransportbewegung the Transporthubbens, but retracted independently of this in the tool room is, within the tool room the Spray devices operated and the forging dies are cooled konturnah and / or lubricated. In this procedure, the cycle start of the Transporthubbens and the Sprühhubbalkens from their respective standby position out of the dies out at the same time, while the subsequent longitudinal and transverse movements and the upward and downward movements of both walking beams coordinated in the process, but can be performed completely independently.
Dies ermöglicht es, daß bereits während der Transporthubbalken mittels einer Hubbewegung das erfasste Werkstück aus dem Gesenk hebt, sich der Sprühbalken zeitgleich schon in Richtung des Werkzeugraumes zwischen die geöffneten Gesenke bewegen kann. Sobald dann der Transporthubbalken mit dem Werkstück in einer Längs- oder Querbewegung den Werkzeugraum verlassen hat, ist der Sprühbalken mit den auf ihm angeordneten Sprüheinrichtungen vollständig in den Werkzeugraum eingefahren und es kann sogleich mit dem Kühl- und/oder Schmiervorgang begonnen werden. Somit lässt sich die Transportphase des Werkstückes zu einer der nächsten Bearbeitungsstationen von Beginn an mit den Bewegungsabläufen zur Kühlung und/oder Schmierung der Gesenke überlagern.This makes it possible that even during the Transporthubbalken by means of a lifting movement, the detected workpiece lifts from the die, the spray bar can move at the same time already in the direction of the tool space between the open dies. Once then the Transporthubbalken with the workpiece in a longitudinal or transverse movement has left the tool room, the spray bar is completely retracted with the spraying arranged on him in the tool room and it can be started immediately with the cooling and / or lubricating process. Thus, the transport phase of the workpiece can be superimposed to one of the next processing stations from the beginning with the motion sequences for cooling and / or lubrication of the dies.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der Sprühhubbalken innerhalb des Werkzeugraumes eine Absenkbewegung und/oder eine Abwärtsbewegung vollzieht. Auf diese Weise können die Sprüheinrichtungen besonders nah, mit optimalem Abstand zu den Werkzeugflächen bzw. Gravuren der Gesenke positioniert werden.A preferred embodiment of the invention provides that the Sprühhubbalken performs a lowering movement and / or a downward movement within the tool room. In this way, the spraying can be positioned very close, with optimal distance to the tool surfaces or engraving of the dies.
Nach einem weiteren vorteilhaften Vorschlag der Erfindung werden der Transporthubbalken und der Sprühhubbalken gegensinnig zueinander bewegt. Damit lässt sich ein ungestörter Bewegungsablauf erreichen, denn mit dem Ausfahren des Transporthubbalkens wird sukzessive der Werkzeugraum zunehmend frei für den gleichzeitig einfahrenden Sprühhubbalken.According to a further advantageous proposal of the invention, the Transporthubbalken and the Sprühhubbalken be moved in opposite directions to each other. Thus, an undisturbed movement can be achieved, because with the extension of the transport bar gradually the tool room is increasingly free for the same einfahrenden Sprühhubbalken.
Des weiteren sieht das erfindungsgemäße Verfahren vor, daß der Transporthubbalken das aufgenommene, geschmiedete Werkstück während der Kühl- und/oder Schmierphase zu einer nächsten Bearbeitungsstation transportiert und dort ablegt, dann einen Werkstückrohling aufnimmt und in den Werkzeugraum transportiert, wobei synchron dazu die Sprüheinrichtungen ausgeschaltet werden und der Sprühbalken aus dem Werkzeugraum herausfährt. Dieses Wechselspiel zwischen Werkstückabtransport zur nächsten Bearbeitungsstation, Ausnutzung dieser Transportphase zur Kühlung und/oder Schmierung der Werkzeuge und Transport eines neuen Werkstückrohlings in die Bearbeitungsstation bei gleichzeitigem Rückzug der Sprüheinrichtung aus dem Werkzeugraum dieser Bearbeitungsstation wiederholt sich ständig mit der je nach gewünschter Produktionsleistung der Schmiedepresse vorgegebenen Taktfrequenz der kontinuierlich umlaufenden Automatik der beiden im Bewegungsablauf aufeinander abgestimmten Hubbalken.Furthermore, the inventive method provides that the Transporthubbalken the recorded, forged workpiece during the Cooling and / or lubricating phase transported to a next processing station and stores there, then picks up a workpiece blank and transported into the tool room, synchronously to the sprayers are turned off and the spray bar moves out of the tool room. This interaction between Werkstückabtransport to the next processing station, use of this transport phase for cooling and / or lubrication of the tools and transport a new workpiece blank in the processing station while retreating the sprayer from the tool room of this processing station is constantly repeated with the given depending on the desired production capacity of the forging clock frequency the continuously rotating automatic movement of the two walking beams coordinated in the movement sequence.
Eine Vorrichtung zur Durchführung des Verfahrens sieht vor, daß dem Transporthubbalken ein separater, mit temporär betätigbaren Sprüheinrichtungen ausgebildeter Sprühhubbalken zugeordnet ist, wobei die beiden Hubbalken über eine Hubbalkenautomatik antriebsmäßig mit gegensinnigen Bewegungsabläufen synchronisiert und zu ihrer Ansteuerung an eine gemeinsame Steuerungs- und Regelungseinrichtung angeschlossen sind. Durch die Synchronität der Antriebe über die gemeinsame servoelektrische Steuerungs- und Regelungseinrichtung wird gewährleistet, daß die beiden Hubbalken, die in eine für den automatischen Werkstücktransport vorgesehene Hubbalkenautomatik eingebunden sind, präzise zur gleichen Zeit mit dem von der Hubbalkenautomatik vorgegebenen Bewegungsablauf starten.An apparatus for carrying out the method provides that the Transporthubbalken a separate, with temporarily operable sprayers trained Sprühhubbalken is assigned, the two lifting bars are synchronized via a Hubbalkenautomatik drivingly with opposite directions of motion and connected to their control to a common control and regulation device. Due to the synchronicity of the drives on the common servo-electric control and regulating device ensures that the two lifting beams, which are integrated into a provided for the automatic workpiece transport automatic lifting beam, start precisely at the same time with the predetermined by the automatic lifting beam movement.
Die zum gleichzeitigen Transport der Werkstücke und zum Kühlen und/oder Schmieren der Werkzeuge erforderlichen Bewegungsabläufe des Transporthubbalkens und des Sprühhubbalkens sind dabei unterschiedlich. Sobald der Transporthubbalken mit dem angehobenen Werkstück eine Längs- oder Querbewegung aus den Werkzeugraum heraus vollzieht, fährt zunehmend der Sprühhubbalken mit seinen Sprüheinrichtung in den frei gewordenen Werkzeugraum ein. Die Hubbalkenautomatik arbeitet hierbei vorzugsweise mit einer elektro- hydraulischen Antriebsvorrichtung, mit der sich Änderungen in den Bewegungsgrößen, in den Zuordnungen der Bewegung der einzelnen Bewegungsachsen zueinander und Veränderungen von Bewegungsgeschwindigkeiten in den einzelnen Bewegungsachsen exakt steuern lassen. Alternativ lässt sich eine elektrohydraulische Antriebsvorrichtung vorsehen.The movements of the transporting beam and the spray-lifting beam required for the simultaneous transport of the workpieces and for cooling and / or lubricating the tools are different. As soon as the transport lifting beam with the raised workpiece completes a longitudinal or transverse movement out of the tool room, the spray lifting bar with its spraying device moves increasingly into the vacated tool room. The automatic lifting beam in this case preferably operates with an electrohydraulic drive device, with which changes in the movement quantities, in the assignments of the movement of the individual movement axes relative to one another and changes in movement speeds in the individual movement axes can be controlled precisely. Alternatively, an electro-hydraulic drive device can be provided.
Die Ansteuerung der Hubbalken bzw. der Hubbalkenautomatik übernimmt die servoelektrische Steuerungs- und Regelungseinrichtung, in der ständig die Soll- und Istwerte der Bewegungsachsen der Hubbalken sowie des gesamten Pressvorgangs erfasst und verarbeitet werden.The actuation of the lifting beam or the lifting beam automatic takes over the servo-electric control and regulating device in which the setpoint and actual values of the axes of movement of the lifting beams and of the entire pressing process are constantly recorded and processed.
Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung eines in den Zeichnungen dargestellten Ausführungsbeispiels der Erfindung. Es zeigen:Further features and details of the invention will become apparent from the claims and the following description of an embodiment of the invention shown in the drawings. Show it:
Fig. 1 bis 4 in einer Ablauffolge einen Werkstücktransport aus dem Werkzeugraum einer Gesenkschmiedepresse und einen Kühl- und Schmiervorgang von in dem Werkzeugraum angeordneten Gesenken mittels einerseits eines Transporthubbalkens und andererseits eines Sprühhubbalkens; und1 to 4 in a sequence of a workpiece transport from the tool room of a drop forging press and a cooling and lubricating process of arranged in the tool room dies means on the one hand a Transporthubbens and on the other hand a Sprühhubbalkens; and
Fig. 5, 5a in schematischer Darstellung Bewegungsabläufe des Transporthubbalkens.Fig. 5, 5a in a schematic representation of movements of the transporting beam.
Eine in den Fig. 1 bis 4 nicht näher dargestellte Gesenkschmiedepresse weist in einem Werkzeugraum 1 einen oberen Werkzeughalter 2 zur Aufnahme eines Oberwerkzeuges mit einem Obergesenk 3 und einen unteren Werkzeughalter 4 zur Aufnahme eines Unterwerkzeugs mit einem Untergesenk 5 auf, wobei der obere Werkzeughalter 2 beispielsweise durch einen Pressenstößel bzw. -Stempel auf- und niederbewegt wird. Der automatische Transport eines geschmiedeten Werkstückes 6 von einer Bearbeitungsstation zur nächsten Bearbeitungsstation bzw. von dem Gesenk 5 zu einem folgenden Gesenk 7 (vgl. hierzu Fig. 5, 5a) erfolgt durch einen Transporthubbalken 8, der von einer nicht dargestellten Antriebsvorrichtung betätigt wird. Der Transporthubbalken 8 ist zum sicheren Ergreifen, Halten und Transportieren des Werkstückes 6 mit einer Greiferzange 9 ausgerüstet.A drop forging press not shown in detail in FIGS. 1 to 4 has in a tool room 1 an upper tool holder 2 for receiving an upper tool with an upper die 3 and a lower tool holder 4 for receiving a lower tool with a lower die 5, the upper tool holder 2 for example is moved up and down by a press ram or stamp. The automatic transport of a forged workpiece 6 from one processing station to the next processing station or from the die 5 to a following die 7 (see Fig. 5, 5a) is carried out by a Transporthubbalken 8, which is actuated by a drive device, not shown. The Transporthubbalken 8 is equipped for secure gripping, holding and transporting the workpiece 6 with a gripper tongs 9.
Auf der dem Transporthubbalken 8 gegenüberliegenden Seite des Werkzeugraumes 1 ist ein mit einer Sprühdüse 10 versehener Sprühhubbalken 11 zum Kühlenund/oder Schmieren und/oder Ausblasen des Ober- und Untergesenkes 3, 5 angeordnet. Auch der Sprühhubbalken 11 wird von einer Antriebsvorrichtung betätigt, die in die den Bewegungsablauf des Transporthubbalkens 8 koordinierende Hubbalkenautomatik eingebunden, jedoch eigenständig programmierbar ist. Die Hubbalkenautomatik wird von einer Steuerungs- und Regelungseinrichtung 12 angesteuert, die ständig die Soll- und Istwerte der Bewegungsachsen des Transporthubbalkens 8 und des Sprühhubbalkens 11 sowie den Anfang und das Ende des Press- bzw. Schmiedevorgangs und die Stellung des Pressenstößels erfasst, vergleicht und mit daraus gebildeten Ausgangssignalen den ungestörten, automatischen Werkstücktransport und den parallel dazu stattfindenden Kühl- und/oder Schmiervorgang des Ober- und Untergesenkes 3, 5 steuert.On the transport stroke bar 8 opposite side of the tool room 1 is provided with a spray nozzle 10 Sprühhubbalken 11 for cooling and / or lubricating and / or blowing out of the upper and lower dies 3, 5 are arranged. The spray-lifting bar 11 is also actuated by a drive device which is integrated in the automatic lifting beam automatic coordinating the movement sequence of the transporting lifting bar 8, but is independently programmable. The automatic lifting beam is controlled by a control and regulating device 12, which constantly detects, compares and with the setpoint and actual values of the axes of movement of the transporting bar 8 and the spray bar 11 and the beginning and end of the pressing or forging process and the position of the press ram derived output signals from the undisturbed, automatic workpiece transport and the parallel occurring cooling and / or lubricating process of the upper and lower dies 3, 5 controls.
Sowohl der Transporthubbalken 8 als auch der Sprühhubbalken 11 stehen bei einem Schmiedevorgang außerhalb des Werkzeugraums 1 in Bereitschaftsstellung (vgl. Fig. 1). Nachdem der Schmiedevorgang beendet ist und der obere Werkzeughalter 2 mit dem Obergesenk 3 seine obere Ruhestellung erreicht hat, fährt der Transporthubbalken 8 in den Werkzeugraum 1 ein, umgreift mittels seiner Zange 9 das zuvor geschmiedete Werkstück 6, hebt dieses an und bewegt sich linear wieder aus dem Werkzeugraum 1 heraus (vgl. hierzu Fig. 2, 3 und 4). Der Ablauf der Bewegungen Einfahren 13, Anheben 14 und Ausfahren 15 des Transporthubbalkens 8 ist schematisch in Fig. 5 dargestellt.Both the transport lifting beam 8 and the spray lifting beam 11 are in the standby position during a forging process outside the tool space 1 (see FIG. After the forging process has ended and the upper tool holder 2 has reached its upper rest position with the upper die 3, the Transporthubbalken 8 moves into the tool room 1, surrounds by means of its pliers 9, the previously forged workpiece 6, raises this and moves linearly out again the tool room 1 out (see Fig. 2, 3 and 4). The course of the movements retracting 13, lifting 14 and extending 15 of the transporting beam 8 is shown schematically in FIG.
Synchron und zeitgleich zur Rückzugsbewegung des Transporthubbalkens 8 aus dem Werkzeugraum 1 , fährt der Sprühhubbalken 11 mit seiner sowohl unterhalb als auch oberhalb Sprühöffnungen 16, 17 aufweisenden Sprühdüse 10 in den Werkzeugraum 1 ein und vollzieht eine Hub- und eine Senkbewegung 18, 19, bei der das Ober- und das Untergesenk 3, 5 konturnah ausgeblasen und besprüht wird (vgl. hierzu Fig. 4).Synchronous and at the same time to the withdrawal movement of the Transporthubbens 8 from the tool room 1, the Sprühhubbalken 11 moves with his both below as also above spray openings 16, 17 having spray nozzle 10 in the tool room 1 and performs a lifting and lowering movement 18, 19, in which the upper and the lower die 3, 5 blown konturnah and sprayed (see FIG. 4) ,
Während dieser Sprühphase setzt der Transporthubbalken 8 seine Transportphase außerhalb des Werkzeugraums 1 fort und fährt in einer Längsbewegung mit dem Werkstück 6 zur nächsten Bearbeitungsstation bzw. zum nächsten Gesenk 7 (vgl. Fig. 5). Er vollzieht dort eine Querbewegung bis über die Gesenkmitte, legt das Werkstück 6 mittels einer Senkbewegung im Gesenk 7 ab, verlässt in einer rückwärts gerichteten Querbewegung das Gesenk 7 und vollzieht eine Längsbewegung zurück zum Untergesenk 5 im Werkzeugraum 1. Der Ablauf der Bewegungen Längstransport 20, Einfahren 21 über das Gesenk, Absenken 22, Ausfahren 23 und Längstransport 24 zurück des Transporthubbalkens ist in Fig. 5 schematisch dargestellt. Der Fig. 5 ist weiterhin zu entnehmen, daß sowohl die Längsbewegung hin zum Untergesenk 7 als auch die Längsbewegung zurück zum Untergesenk 5 des Transporthubbalkens 8 außerhalb des Werkzeugraums der Untergesenke 5, 7 erfolgt. Die Fig. 5a zeigt, daß die Längstransportbewegung vom Untergesenk 5 hin zum Untergesenk 7 durch einen Rastpunkt 25 in die Bewegungsabschnitte 20a, 20b unterteilt wird. Dieser Rastpunkt 25 ist ein programmierter Haltepunkt der Hubbalken- Automatik, an dem der automatische Ablauf des Transports unterbrochen wird.During this spraying phase, the transport lifting beam 8 continues its transport phase outside the tool room 1 and moves in a longitudinal movement with the workpiece 6 to the next processing station or to the next die 7 (see FIG. He performs there a transverse movement over the die center, places the workpiece 6 by means of a lowering movement in the die 7, leaves in a reverse transverse movement of the die 7 and performs a longitudinal movement back to the lower die 5 in the tool room 1. The sequence of movements longitudinal transport 20, Retraction 21 via the die, lowering 22, extension 23 and longitudinal transport 24 back of the transporting beam is shown schematically in FIG. 5, it can be seen that both the longitudinal movement towards the lower die 7 and the longitudinal movement back to the lower die 5 of the Transporthubbalkens 8 outside of the tool space of the lower dies 5, 7 takes place. FIG. 5 a shows that the longitudinal transport movement from the lower die 5 to the lower die 7 is subdivided into the movement sections 20 a, 20 b by a latching point 25. This locking point 25 is a programmed breakpoint of the automatic lifting beam, at which the automatic sequence of the transport is interrupted.
Zeitgleich mit dem Transport des Werkstückes 6 zum Untergesenk 7 und dem Rückzug des Transporthubbalkens 8 zum Werkzeugraum 1 , bewegt sich der Sprühhubbalken 11 aus dem Werkzeugraum 1 hinaus, bis er wieder seine außerhalb des Werkzeugraums 1 liegende Bereitschaftsstellung einnimmt. In diese Position wird dann auch der Transporthubbalken 8, nachdem er das Werkstück in die Gesenke 3, 5 abgelegt hat, zurückgefahren, so daß ein neuer Werkstückrohling geschmiedet und sich das Wechselspiel zwischen der Transportphase zur nächsten Bearbeitungsstation und synchron dazu die Bewegungsphase des Sprühhubbalkens 11 zum Kühlen und/oder Schmieren der Gesenke 3, 5 wiederholen kann. Simultaneously with the transport of the workpiece 6 to the lower die 7 and the withdrawal of the Transporthubbens 8 to the tool room 1, the Sprühhubbalken 11 moves out of the tool room 1 addition, until it again assumes its out of the tool room 1 standby position. In this position, then the Transporthubbalken 8, after he has placed the workpiece in the dies 3, 5, moved back so that a new workpiece blank forged and the interplay between the transport phase to the next processing station and synchronous to the movement phase of the Sprühhubbalkens 11 for Cooling and / or lubricating the dies 3, 5 can repeat.

Claims

Patentansprüche: claims:
1. Verfahren zum Ausblasen und/oder Besprühen von oben und/oder unten angeordneten Gesenken (3, 5) von Schmiedepressen, insbesondere von Gesenkschmiedepressen, mit einem automatischen Werkstücktransport durch einen mit Greifvorrichtungen (9) versehenen Transporthubbalken (8) und einer mechanischen Ausblas- und/oder Sprühvorrichtung (11 ; 10), die in den Werkzeugraum (1) der Schmiedepresse eingebracht und aus diesem wieder zurückgeführt wird, dadurch gekennzeichnet, daß während der Transporthubbalken (8) ein in einem vorhergehenden Schmiedevorgang hergestelltes Werkstück (6) anhebt und aus dem Werkzeugraum (1) abtransportiert, ein mit Sprüheinrichtungen (10) versehener Hubbalken (11) synchron zu Hub- und Abtransportbewegung des Transportbalkens (8), aber unabhängig von diesem in den Werkzeugraum (1) eingefahren wird, innerhalb des Werkzeugraumes (1) die Sprüheinrichtungen (10) betätigt und die Schmiedegesenke (3, 5) konturnah gekühlt und/oder geschmiert werden.1. A method for blowing and / or spraying of above and / or below arranged dies (3, 5) of forging presses, in particular of drop forging presses, with an automatic workpiece transport by a with gripping devices (9) provided Transporthubbalken (8) and a mechanical Ausblas- and / or spraying device (11; 10), which is inserted into the tool space (1) of the forging press and fed back therefrom, characterized in that a workpiece (6) produced in a preceding forging process raises and out during the transporting stroke bar (8) transported away from the tool room (1), a lifting bar (11) provided with spraying devices (11) is moved synchronously with the lifting and transporting movement of the transporting bar (8), but independently of this into the tool room (1), within the tool room (1) Spray devices (10) actuated and the forging dies (3, 5) are cooled konturnah and / or lubricated.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Sprühhubbalken (11) innerhalb des Werkzeugraumes (1) eine Absenkbewegung (19) und/oder eine Aufwärtsbewegung (18) vollzieht.2. The method according to claim 1, characterized in that the Sprühhubbalken (11) within the tool space (1) performs a lowering movement (19) and / or an upward movement (18).
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Transporthubbalken (8) und der Sprühhubbalken (11) gegensinnig zueinander bewegt werden.3. The method according to claim 1 or 2, characterized in that the Transporthubbalken (8) and the Sprühhubbalken (11) are moved in opposite directions to each other.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Transporthubbalken (8) das aufgenommene, geschmiedete Werkstück (6) während der Kühl- und/oder Schmierphase zu einer nächsten Bearbeitungsstation (7) transportiert und dort ablegt, dann einen Werkstückrohling aufnimmt und in den Werkzeugraum (1) transportiert, wobei synchron dazu die Sprüheinrichtung (10) ausgeschaltet wird und der Sprühhubbalken (11) aus dem Werkzeugraum (1) herausfährt.4. The method according to any one of claims 1 to 3, characterized that the Transporthubbalken (8) transports the recorded, forged workpiece (6) during the cooling and / or lubricating phase to a next processing station (7) and deposits there, then picks up a workpiece blank and transported into the tool room (1), in synchronism the spraying device (10) is switched off and the spray-lifting bar (11) moves out of the tool room (1).
5. Vorrichtung zum Ausblasen und/oder Besprühen von oben und/oder unten angeordneten Gesenken (3, 5) von Schmiedepressen, insbesondere von Gesenkschmiedepressen, mit einem automatischen Werkstücktransport durch einen mit Greifvorrichtungen (9) versehenen Transporthubbalken (8) und einer mechanischen Ausblas- und/oder Sprühvorrichtung (11 ; 10), die in den Werkzeugraum (1) der Schmiedepresse eingebracht und aus diesem wieder zurückgeführt wird, zur Durchführung des Verfahrens nach Anspruch 1 , dadurch gekennzeichnet, daß dem Transporthubbalken (8) ein separater, mit temporär betätigbaren Sprüheinrichtungen (10) ausgebildeter Sprühhubbalken (11) zugeordnet ist, wobei die beiden Hubbalken (8, 11) über eine Hubbalkenautomatik antriebsmäßig mit gegensinnigen Bewegungsabläufen synchronisiert und zu ihrer Ansteuerung an eine gemeinsame Steuerungs- und Regelungseinrichtung (12) angeschlossen sind.5. An apparatus for blowing and / or spraying of above and / or below arranged dies (3, 5) of forging presses, in particular of drop forging presses, with an automatic workpiece transport by a gripping devices (9) provided Transporthubbalken (8) and a mechanical Ausblas- and / or spraying device (11; 10), which is introduced into the tool room (1) of the forging press and returned therefrom, for carrying out the method according to claim 1, characterized in that the Transporthubbalken (8) a separate, with temporarily operable Spraying devices (10) is assigned to trained Sprühhubbalken (11), wherein the two Hubbalken (8, 11) via a Hubbalkenautomatik drivingly synchronized with opposite directions of motion and connected to their control to a common control and regulating device (12).
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der mit Greifzangen (9) ausgebildete Transporthubbalken (8) und der mit Sprühdüsen (10) versehene Sprühhubbalken (11) einander gegenüberliegend angeordnet sind. 6. Apparatus according to claim 5, characterized in that the gripping tongs (9) formed Transporthubbalken (8) and the spray nozzles (10) provided Sprühhubbalken (11) are arranged opposite to each other.
EP06818059A 2005-11-15 2006-11-07 Method and apparatus for blowing out and/or for spraying dies of forging presses Not-in-force EP1951457B1 (en)

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DE102005054352A DE102005054352B4 (en) 2005-11-15 2005-11-15 Method and apparatus for blowing and / or spraying dies of forging presses
PCT/DE2006/001957 WO2007056975A1 (en) 2005-11-15 2006-11-07 Method and apparatus for blowing out and/or for spraying dies of forging presses

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JP2015066572A (en) * 2013-09-27 2015-04-13 株式会社神戸製鋼所 Apparatus and method for manufacturing suspension arm for motor vehicle
CN104209436A (en) * 2014-08-29 2014-12-17 偃师市华信机械有限公司 Forging device used for round die
JP6676247B2 (en) * 2015-05-26 2020-04-08 株式会社サンダテック Cold forging machine
CN107755610A (en) * 2017-11-22 2018-03-06 芜湖安普机器人产业技术研究院有限公司 A kind of automatic jet mould device of forging press and its jet mould method

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US20080236229A1 (en) 2008-10-02
DE102005054352B4 (en) 2007-10-04
US7946145B2 (en) 2011-05-24
ES2333366T3 (en) 2010-02-19
JP5039047B2 (en) 2012-10-03
EP1951457B1 (en) 2009-09-23
WO2007056975A1 (en) 2007-05-24
KR20080069619A (en) 2008-07-28
JP2009515701A (en) 2009-04-16
DE102005054352A1 (en) 2007-05-16
ATE443583T1 (en) 2009-10-15
DE502006004939D1 (en) 2009-11-05

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