EP0667197A1 - Forging machine - Google Patents
Forging machine Download PDFInfo
- Publication number
- EP0667197A1 EP0667197A1 EP95890013A EP95890013A EP0667197A1 EP 0667197 A1 EP0667197 A1 EP 0667197A1 EP 95890013 A EP95890013 A EP 95890013A EP 95890013 A EP95890013 A EP 95890013A EP 0667197 A1 EP0667197 A1 EP 0667197A1
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- European Patent Office
- Prior art keywords
- connecting rod
- machine frame
- eccentric
- forging machine
- forged
- 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.)
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- 238000005242 forging Methods 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams
Definitions
- the invention relates to a forging machine with driven connecting rods which are longitudinally guided in a machine frame, in particular eccentrically driven forged connecting rods, which are guided radially to the eccentric shaft axis in a machine frame and which have a connecting rod head which forms a sliding surface for a rotating block on the eccentric sliding block for the drive connection.
- a positive drive connection between the sliding block and the connecting rod head has previously been provided by the sliding block engaging in a transverse link guide of the connecting rod head.
- the connecting rod head guides the sliding block along two opposing sliding surfaces, for which purpose the connecting rod head usually encloses the sliding block and thus the eccentric.
- the invention is therefore based on the object of eliminating these deficiencies and of creating a forging machine of the type described at the outset which is distinguished by its particularly simple drive concept and thereby enables a robust, compact construction.
- the invention solves this problem in that the connecting rod head and sliding block are connected to one another in a purely frictional manner, compression springs supported on the machine frame pressurizing the forged connecting rods and pressing the connecting rod heads with their sliding surfaces against the sliding blocks.
- This frictional drive connection means that the sliding block only needs to provide the downward working stroke, while the return stroke of the forged connecting rod takes place due to the pressurization via the compression springs.
- Conrod head and sliding block therefore only need to interact via a single sliding surface, so that no interlocking or overlapping form-locking parts are required and a very space-saving design is possible.
- the drive essentially leads to compressive forces, which means that despite the relatively small dimensions, high loads can be absorbed and the desired performance is guaranteed.
- All spring elements can be used as compression springs that press the sliding conrods against the sliding block with sufficient force.
- piston drives connected to an accumulator are provided as compression springs, since this gives rise to hydraulic springs with the desired restoring forces and sufficient flexibility in a simple construction.
- the forged connecting rods have two parts which can be connected to one another in a screw-adjustable manner, a part which is guided in a rotationally fixed manner with respect to the machine frame and a part which is rotatably guided in relation to the machine frame, a rotary drive being associated with the rotatable part.
- the division of the forged connecting rods into a rotatable part and a screwed but non-rotatably guided other part results in a simple and reliable stroke position adjustment.
- the non-rotatable guide of the other part leads to a change in the length of the forged connecting rod due to the screwing together or apart of the two parts and thus to the desired stroke position adjustment. It is only necessary to ensure that the rotary movement of one part does not affect the tool position or the connecting rod drive, which is possible in various ways depending on the drive type.
- the connection of the upper and lower part is primarily dependent on the change in length due to the screw connection, it is irrelevant whether the screw connection of the two parts of the upper part is screwed into the lower part or the lower part into the upper part and the constructive solution to this Screw connection can be adapted to the structural conditions of the respective forging machine.
- the rotary drive for the upper part does not have to take part in its lifting movement
- the rotary drive can have a gear with a non-rotatable but axially displaceable seated on the upper part and rotatably but non-displaceably mounted in the machine frame, so that the upper part with a machine frame fixedly mounted gearwheel is arbitrary can be rotated without hindering the lifting movement of the upper part.
- the eccentric shafts Due to the non-positive drive connection and the forged connecting rod's own stroke position adjustment, the eccentric shafts can be mounted in simple pivot bearings and there is no need to change the center of the bearing for these bearings. There is therefore no longer any need for an adjustment housing, the eccentric shafts can be driven via simple spur gears or the like, and all the requirements for simplifying the machine frame construction are met.
- the machine frame can therefore consist essentially of two end wall plates clamped together with the interposition of preferably frame-shaped spacers, so that an extremely expedient, low-effort and yet high-strength forging box is produced.
- a machine frame 1 which is composed essentially of two parallel end walls 3 clamped together with spacers 2 encircling frame-shaped spacers, forged connecting rods 5, not shown, are guided radially at one end 4, with an eccentric drive 6 for the lifting movement of the forged connecting rods 5 cares.
- the eccentric drive 6 comprises an eccentric shaft 8, which is mounted in the machine frame 1 and can be driven via a drive gear 7, only indicated, with an eccentric 9, on which eccentric 9 a sliding block 10 is rotatably mounted.
- the sliding block 10 is drive-connected to the forged connecting rod 5 in a purely non-positive manner, the forged connecting rod 5 being pressurized via compression springs 11 and the eccentric-side connecting rod head 12 of the forged connecting rod 5 being pressed against the sliding block 10 with a sliding surface 13.
- a support plate 14 which can be fixed on the sliding block 10 or on the connecting rod head 12 and consists of a suitable material or has corresponding lubrication channels or the like.
- the forged connecting rod 5 is therefore pressed downwards over the sliding block 10 in the sense of a working stroke, while the return stroke takes place due to the pressure load on the compression springs 11, which compression springs are designed as hydraulic springs in the form of a hydraulic piston drive 15 connected to an accumulator (not shown).
- the forged connecting rod 5 is divided into a lower part 5a on the tool side and an upper part 5b on the eccentric side, which parts 5a, 5b are connected to one another in a screw-adjustable manner.
- the lower part 5a is guided in a rotationally fixed manner in the machine frame 1, the upper part 5b, on the other hand, can be rotated via a rotary drive 16, which rotary drive 16 has a ring gear 17 which is rotatable but non-displaceably mounted in the machine frame 1, for example a worm wheel, which is rotationally fixed via an axial toothing 18, but is axially displaceable on the upper part 5b.
- the upper part 5b of the forged connecting rod 5 is therefore rotated without the lifting movement being impaired, and a rotation of the upper part 5b inevitably results in a change in length of the forged connecting rod 5 due to the screw connection with the rotationally guided lower part 5a, and thus one Stroke adjustment for the forging tool 4 on the connecting rod end.
- the upper part 5b forms a downwardly projecting connecting pin 19 with an external thread 20 and the lower part 5a has an internal bore 21 with an internal thread 22 for receiving the connecting pin 19.
- the lower part 5a is guided exactly in a rotationally fixed manner by straight guides 23 in the machine frame 1, with these straight guides 23 interacting with a square end flange 24 of the lower part 5a, the corner regions 25 of which form flange attachments for engaging the compression springs 11.
- the upper part 5b is provided with an inner bore 26, which has an internal thread 27 for screwing in the lower part 5a, which for this purpose has a protruding pin extension 28 with an external thread 29.
- a protruding pin extension 28 with an external thread 29.
- two diametrically opposite, projecting flange extensions 30 are provided, which are guided between slot guides 31 and thus hold the lower part 5a in a rotationally fixed manner with respect to the machine frame 1, to which flange extensions 30 a compression spring 11 engages.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Schmiedemaschine mit angetriebenen, in einem Maschinengestell längsgeführten Schmiedepleueln, insbesondere exzentergetriebenen Schmiedepleueln, die radial zur Exzenterwellenachse in einem Maschinengestell geführt sind und zur Antriebsverbindung am exzenterzugewandten Ende einen eine Gleitfläche für einen drehbar am Exzenter sitzenden Gleitstein bildenden Pleuelkopf aufweisen.The invention relates to a forging machine with driven connecting rods which are longitudinally guided in a machine frame, in particular eccentrically driven forged connecting rods, which are guided radially to the eccentric shaft axis in a machine frame and which have a connecting rod head which forms a sliding surface for a rotating block on the eccentric sliding block for the drive connection.
Um die drehende Bewegung des Exzenters in die schwingende Hubbewegung der Schmiedepleuel umzusetzen, wird bisher für eine formschlüssige Antriebsverbindung zwischen Gleitstein und Pleuelkopf gesorgt, indem der Gleitstein in eine querverlaufende Kulissenführung des Pleuelkopfes eingreift. Der Pleuelkopf führt dabei den Gleitstein entlang zweier einander gegenüberliegender Gleitflächen, wozu der Pleuelkopf meist den Kulissenstein und damit den Exzenter umschließt. Es wurde aber auch schon vorgeschlagen, den Gleitstein mit einer pleuelseitigen Führungsschiene auszustatten und den Pleuelkopf mit einer T-förmigen Führungsplatte in diese Führungsschiene eingreifen zu lassen (AT-PS 370 351), doch ist bei allen bekannten exzentergetriebenen Schmiedepleueln auf Grund der Formschlüssigkeit der Antriebsverbindung ein entsprechend großer Bauraum und Materialaufwand in Kauf zu nehmen, was vor allem bei Mehrhämmermaschinen große Abmessungen und ein hohes Gewicht mit sich bringt. Darüber hinaus müssen für eine Hublagenverstellung spezielle Verstellgehäuse für die Exzenterwellenlagerung vorgesehen sein, welche Verstellgehäuse das geeignete Lageraugen aufweisende Maschinengestell in seiner Steifigkeit schwächt, wozu noch kommt, daß durch die Verlagerung der Exzenterwellenmitte beim Verstellen ein aufwendiger, diesen Versatz ausgleichender Exzenterwellenantrieb erforderlich ist.In order to convert the rotating movement of the eccentric into the oscillating lifting movement of the forged connecting rods, a positive drive connection between the sliding block and the connecting rod head has previously been provided by the sliding block engaging in a transverse link guide of the connecting rod head. The connecting rod head guides the sliding block along two opposing sliding surfaces, for which purpose the connecting rod head usually encloses the sliding block and thus the eccentric. However, it has also already been proposed to equip the sliding block with a connecting rod-side guide rail and to allow the connecting rod head to engage in this guide rail with a T-shaped guide plate (AT-PS 370 351), but in all known eccentric-driven forged connecting rods is due to the positive connection of the drive connection to accept a correspondingly large installation space and material expenditure, which brings large dimensions and high weight, especially in multi-hammer machines. In addition, for a stroke position adjustment special adjustment housing for the eccentric shaft bearing should be provided, which adjustment housing weakens the suitable bearing eyes machine frame in its rigidity, to which is added that by shifting the eccentric shaft center when adjusting a complex, this offset compensating eccentric shaft drive is required.
Der Erfindung liegt daher die Aufgabe zugrunde, diese Mängel zu beseitigen und eine Schmiedemaschine der eingangs geschilderten Art zu schaffen, die sich durch ihr besonders einfaches Antriebskonzept auszeichnet und dadurch eine robuste, kompakte Konstruktion ermöglicht.The invention is therefore based on the object of eliminating these deficiencies and of creating a forging machine of the type described at the outset which is distinguished by its particularly simple drive concept and thereby enables a robust, compact construction.
Die Erfindung löst diese Aufgabe dadurch, daß Pleuelkopf und Gleitstein rein kraftschlüssig miteinander verbunden sind, wobei am Maschinengestell abgestützte Druckfedern die Schmiedepleuel druckbeaufschlagen und die Pleuelköpfe mit ihren Gleitflächen an die Gleitsteine andrücken. Durch diese kraftschlüssige Antriebsverbindung braucht der Gleitstein nur mehr für den abwärtsgerichteten Arbeitshub zu sorgen, während der Rückhub des Schmiedepleuels durch die Druckbeaufschlagung über die Druckfedern erfolgt. Pleuelkopf und Gleitstein brauchen demnach auch nur mehr über eine einzige Gleitfläche zusammenzuwirken, so daß keine einander über- bzw. hintergreifenden Formschlußteile erforderlich sind und eine sehr platzsparende Bauweise möglich wird. Außerdem führt der Antrieb im wesentlichen zu Druckkräften, wodurch trotz der verhältnismäßig geringen Abmessungen hohe Belastungen aufgenommen werden können und die angestrebte Leistungsfähigkeit gewährleistet ist.The invention solves this problem in that the connecting rod head and sliding block are connected to one another in a purely frictional manner, compression springs supported on the machine frame pressurizing the forged connecting rods and pressing the connecting rod heads with their sliding surfaces against the sliding blocks. This frictional drive connection means that the sliding block only needs to provide the downward working stroke, while the return stroke of the forged connecting rod takes place due to the pressurization via the compression springs. Conrod head and sliding block therefore only need to interact via a single sliding surface, so that no interlocking or overlapping form-locking parts are required and a very space-saving design is possible. In addition, the drive essentially leads to compressive forces, which means that despite the relatively small dimensions, high loads can be absorbed and the desired performance is guaranteed.
Als Druckfedern können an sich alle Federelemente eingesetzt werden, die die Schmeidepleuel mit ausreichender Kraft gegen den Gleitstein drücken. Besonders vorteilhaft ist es aber, wenn als Druckfedern an einen Akkumulator angeschlossene Kolbentriebe vorgesehen sind, da so bei einfacher Konstruktion Hydraulikfedern mit gewünschten Rückstellkräfte und ausreichender Nachgiebigkeit entstehen.All spring elements can be used as compression springs that press the sliding conrods against the sliding block with sufficient force. However, it is particularly advantageous if piston drives connected to an accumulator are provided as compression springs, since this gives rise to hydraulic springs with the desired restoring forces and sufficient flexibility in a simple construction.
Um eine rationelle Hublagenverstellung zu erreichen, weisen die Schmiedepleuel zwei schraubverstellbar miteinander verbundene Teile, einen gegenüber dem Maschinengestell drehfest geführten Teil und einen gegenüber dem Maschinengestell verdrehbar geführten Teil, auf, wobei dem verdrehbaren Teil ein Drehantrieb zugeordnet ist. Durch die Aufteilung der Schmiedepleuel in einen verdrehbaren Teil und einen mit diesem verschraubten, aber drehfest geführten anderen Teil ergibt sich eine einfache und funktionssichere Hublagenverstellung. Wird nämlich der verdrehbare Teil über einen entsprechenden Drehantrieb verdreht, kommt es durch die drehfeste Führung des anderen Teils zu einer Längenänderung des Schmiedepleuels wegen des Zusammen- oder Auseinanderschraubens der beiden Teile und damit zur gewünschten Hublagenverstellung. Dabei ist lediglich dafür zu sorgen, daß die Drehbewegung des einen Teils weder die Werkzeuglage noch den Pleuelantrieb beeinträchtigt, was auf verschiedene, von der Antriebsart abhängige Weise möglich ist.In order to achieve an efficient stroke position adjustment, the forged connecting rods have two parts which can be connected to one another in a screw-adjustable manner, a part which is guided in a rotationally fixed manner with respect to the machine frame and a part which is rotatably guided in relation to the machine frame, a rotary drive being associated with the rotatable part. The division of the forged connecting rods into a rotatable part and a screwed but non-rotatably guided other part results in a simple and reliable stroke position adjustment. If the rotatable part is rotated via a corresponding rotary drive, the non-rotatable guide of the other part leads to a change in the length of the forged connecting rod due to the screwing together or apart of the two parts and thus to the desired stroke position adjustment. It is only necessary to ensure that the rotary movement of one part does not affect the tool position or the connecting rod drive, which is possible in various ways depending on the drive type.
Bei einem Exzentertrieb mit kraftschlüssig miteinander verbundenen Pleuelkopf und Gleitstein bilden zwechmäßigerweise ein werkzeugseitiger Unterteil den drehfesten Pleuelteil und ein exzenterseitiger Oberteil den verdrehbaren Pleuelteil, wobei an Flanschansätzen od. dgl. des Unterteils die Druckfedern angreifen. Hier kann wegen des fehlenden Formschlusses zwischen Schmiedepleuel und Gleitstein der Pleuelkopf gegenüber dem Gleitstein nicht nur querverschoben, sondern auch verdreht werden, wodurch ohne zusätzliche relativverdrehbare Kupplungsteile od. dgl. die Hublagenverstellung auch während des Betriebes durchführbar ist. Außerdem sind wegen des drehfesten Unterteils einerseits der ordnungsgemäße Einsatz der Schmiedewerkzeuge und anderseits ein einwandfreier Ansatz der Druckfedern an den Flanschansätzen gewährleistet. Durch eine entsprechende Anpassung des Federweges bzw. der Vorspannung der Druckfedern lassen sich dabei eventuell erforderliche Änderungen der Druckbeaufschlagung ausgleichen. Da es bei der Verbindung von Ober- und Unterteil vor allem auf die Längenänderung durch die Verschraubung ankommt, ist es ohne Bedeutung, ob bei der Schraubverbindung der beiden Teile der Oberteil in den Unterteil oder der Unterteil in den Oberteil eingeschraubt wird und die konstruktive Lösung dieser Schraubverbindung kann an die baulichen Gegebenheiten der jeweiligen Schmiedemaschine angepaßt werden.In the case of an eccentric drive with a connecting rod head and sliding block which are non-positively connected to one another, a lower part on the tool side forms the non-rotatable connecting rod part and an upper part on the eccentric side forms the rotatable connecting rod part, the compression springs acting on flange attachments or the like of the lower part. Due to the lack of a positive connection between the forged connecting rod and sliding block, the connecting rod head can not only be shifted transversely with respect to the sliding block, but also rotated, which means that the stroke position can be adjusted without additional relatively rotatable coupling parts or the like is also feasible during operation. In addition, due to the non-rotatable lower part, the correct use of the forging tools and, on the other hand, a perfect attachment of the compression springs to the flange attachments are guaranteed. Appropriate adjustment of the spring travel or the preload of the compression springs can compensate for any changes in the pressurization that may be required. Since the connection of the upper and lower part is primarily dependent on the change in length due to the screw connection, it is irrelevant whether the screw connection of the two parts of the upper part is screwed into the lower part or the lower part into the upper part and the constructive solution to this Screw connection can be adapted to the structural conditions of the respective forging machine.
Damit der Drehantrieb für den Oberteil dessen Hubbewegung nicht mitzumachen braucht, kann der Drehantrieb ein Getriebe mit einem am Oberteil drehfest, aber axialverschiebbar sitzenden und im Maschinengestell verdrehbar, aber unverschiebbar gelagerten Zahnkranz aufweisen, so daß über den Zahnkranz der Oberteil mit einem maschinengestellfest gelagerten Getrieberad beliebig verdreht werden kann, ohne dadurch die Hubbewegung des Oberteils zu behindern.So that the rotary drive for the upper part does not have to take part in its lifting movement, the rotary drive can have a gear with a non-rotatable but axially displaceable seated on the upper part and rotatably but non-displaceably mounted in the machine frame, so that the upper part with a machine frame fixedly mounted gearwheel is arbitrary can be rotated without hindering the lifting movement of the upper part.
Auf Grund der kraftschlüssigen Antriebsverbindung und der schmiedepleueleigenen Hublagenverstellung können die Exzenterwellen in einfachen Drehlagern gelagert sein und es besteht keine Notwendigkeit, die Lagermitte für diese Lager zu verändern. Es sind daher keine Verstellgehäuse mehr erforderlich, der Antrieb der Exzenterwellen kann über einfache Stirnradgetriebe od. dgl. vorgenommen werden und es sind alle Voraussetzungen für eine Vereinfachung der Maschinengestellkonstruktion gegeben. Das Maschinengestell kann daher im wesentlichen aus zwei unter Zwischenlage von vorzugsweise rahmenförmig umlaufenden Abstandhaltern zusammengespannten Stirnwandplatten bestehen, so daß ein überaus zweckmäßiger, aufwandsarmer und dennoch hochfester Schmiedekasten entsteht.Due to the non-positive drive connection and the forged connecting rod's own stroke position adjustment, the eccentric shafts can be mounted in simple pivot bearings and there is no need to change the center of the bearing for these bearings. There is therefore no longer any need for an adjustment housing, the eccentric shafts can be driven via simple spur gears or the like, and all the requirements for simplifying the machine frame construction are met. The machine frame can therefore consist essentially of two end wall plates clamped together with the interposition of preferably frame-shaped spacers, so that an extremely expedient, low-effort and yet high-strength forging box is produced.
In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt, und zwar zeigen
- Fig. 1 und 2
- einen Teil einer erfindungsgemäßen Schmiedemaschine im Axialschnitt und im Querschnitt nach der Linie I-I der Fig. 2 bzw. nach der Linie II-II der Fig. 1 und die
- Fig. 3 und 4
- ein etwas abgeändertes Ausführungsbeispiel einer erfindungsgemäßen Schmiedemaschine im Axialschnitt durch Exzenterwellen- und Pleuelachse bzw. im Axialschnitt nach der Linie IV-IV der Fig. 3.
- 1 and 2
- a part of a forging machine according to the invention in axial section and in cross section along the line II of FIG. 2 or along the line II-II of FIG. 1 and
- 3 and 4
- a somewhat modified embodiment of a forging machine according to the invention in axial section through the eccentric shaft and connecting rod axis or in axial section along the line IV-IV of FIG. 3rd
In einem Maschinengestell 1, das sich im wesentlichen aus zwei zueinander parallelen, unter Zwischenlage rahmenförmig umlaufender Abstandhalter 2 zusammengespannten Stirnwandplatten 3 zusammensetzt, sind an dem einen Ende 4 nicht weiter dargestellte Schmiedewerkzeuge tragende Schmiedepleuel 5 radial geführt, wobei ein Exzentertrieb 6 für die Hubbewegung der Schmiedepleuel 5 sorgt. Der Exzentertrieb 6 umfaßt eine im Maschinengestell 1 gelagerte, über ein nur angedeutetes Antriebszahnrad 7 antreibbare Exzenterwelle 8 mit einem Exzenter 9, auf welchem Exzenter 9 ein Gleitstein 10 drehbar lagert. Der Gleitstein 10 ist mit dem Schmiedepleuel 5 rein kraftschlüssig antriebsverbunden, wobei das Schmiedepleuel 5 über Druckfedern 11 druckbeaufschlagt ist und dadurch der exzenterseitige Pleuelkopf 12 des Schmiedepleuels 5 mit einer Gleitfläche 13 gegen den Gleitstein 10 gedrückt wird. Um hier die Reibungs- bzw. Gleitverhältnisse beeinflussen zu können, gibt es eine Auflagerplatte 14, die am Gleitstein 10 oder am Pleuelkopf 12 fixiert werden kann und aus geeignetem Werkstoff besteht bzw. entsprechende Schmierkanäle od. dgl. aufweist. Bei Exzenterdrehung wird daher das Schmiedepleuel 5 über den Gleitstein 10 im Sinne eines Arbeitshubes abwärts gedrückt, während der Rückhub auf Grund der Druckbelastung der Druckfedern 11 erfolgt, welche Druckfedern als Hydraulikfedern in Form eines an einen nicht weiter dargestellten Akkumulator angeschlossenen hydraulischen Kolbentriebes 15 ausgebildet sind.In a
Um eine einfache Hublagenverstellung zu erreichen, ist das Schmiedepleuel 5 in einen werkzeugseitigen Unterteil 5a und einen exzenterseitigen Oberteil 5b unterteilt, welche Teile 5a, 5b schraubverstellbar miteinander verbunden sind. Der Unterteil 5a ist drehfest im Maschinengestell 1 geführt, der Oberteil 5b läßt sich hingegen über einen Drehantrieb 16 verdrehen, welcher Drehantrieb 16 ein im Maschinengestell 1 verdrehbar, aber unverschiebbar gelagerten Zahnkranz 17, beispielsweise ein Schneckenrad, aufweist, das über eine Axialverzahnung 18 drehfest, aber axial verschiebbar am Oberteil 5b sitzt. Durch eine Verdrehung des Zahnkranzes 17 wird daher der Oberteil 5b des Schmiedepleuels 5 verdreht, ohne daß dadurch die Hubbewegung beeinträchtigt wäre, und eine Verdrehung des Oberteils 5b ergibt zwangsweise auf Grund der Schraubverbindung mit dem drehfest geführten Unterteil 5a eine Längenänderung des Schmiedepleuels 5 und damit eine Hublagenverstellung für das am Pleuelende 4 sitzende Schmiedewerkzeug.In order to achieve a simple stroke position adjustment, the forged connecting
Wie im Ausführungsbeispiel nach Fig. 1 und 2 angedeutet, bildet der Oberteil 5b einen abwärts ragenden Verbindungszapfen 19 mit einem Außengewinde 20 und der Unterteil 5a weist eine Innenbohrung 21 mit einem Innengewinde 22 zur Aufnahme des Verbindungszapfens 19 auf. Der Unterteil 5a wird durch Geradführungen 23 im Maschinengestell 1 exakt drehfest geführt, wobei mit diesen Geradführungen 23 ein quadratischer Endflansch 24 des Unterteils 5a zusammenwirkt, dessen Eckbereiche 25 Flanschansätze für das Angreifen der Druckfedern 11 bilden.As indicated in the exemplary embodiment according to FIGS. 1 and 2, the
Gemäß dem Ausführungsbeispiel nach Fig. 3 und 4 ist der Oberteil 5b mit einer Innenbohrung 26 versehen, die ein Innengewinde 27 zum Einschrauben des Unterteils 5a besitzt, der dazu einen hochragenden Zapfenansatz 28 mit einem Auβengewinde 29 aufweist. Im Übergangsbereich zwischen dem Zapfenansatz 28 und dem zylindrischen Unterteil 5a sind zwei diametral gegenüberliegende, abstehende Flanschansätze 30 vorgesehen, die zwischen Schlitzführungen 31 geführt sind und damit den Unterteil 5a drehfest gegenüber dem Maschinengestell 1 halten, an welchen Flanschansätzen 30 jeweils eine Druckfeder 11 angreift.According to the exemplary embodiment according to FIGS. 3 and 4, the
Unabhängig davon, wie Unterteil 5a und Oberteil 5b miteinander verschraubt sind, kommt es bei einem Verdrehen des Oberteils 5b über den Drehantrieb 16 zu einer Hublagenverstellung der Schmiedewerkzeuge, und wegen der kraftschlüssigen Antriebsverbindung zwischen Exzenter 8 und Pleuelkopf 12 entsteht eine besonders einfache, kompakte und leistungsstarke Schmiedemaschine.Regardless of how the
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83/94 | 1994-01-18 | ||
| AT8394 | 1994-01-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0667197A1 true EP0667197A1 (en) | 1995-08-16 |
| EP0667197B1 EP0667197B1 (en) | 1997-10-08 |
Family
ID=3481083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95890013A Expired - Lifetime EP0667197B1 (en) | 1994-01-18 | 1995-01-16 | Forging machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5609056A (en) |
| EP (1) | EP0667197B1 (en) |
| JP (1) | JP2837366B2 (en) |
| CN (1) | CN1062501C (en) |
| DE (1) | DE59500759D1 (en) |
| ES (1) | ES2107901T3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT404441B (en) * | 1996-09-17 | 1998-11-25 | Gfm Holding Ag | FORGING MACHINE |
| US6308552B1 (en) | 1998-12-09 | 2001-10-30 | Gfm Betteiligungs- Und Management Gmbh & Co. Kg | Forging machine |
| CN102921858A (en) * | 2012-10-26 | 2013-02-13 | 无锡欧亚电梯设备有限公司 | Crankshaft connecting rod assembly for forging machine tools |
| DE102015115660A1 (en) | 2014-10-02 | 2016-04-07 | GFM - GmbH | Forging device with guided in the lifting direction, forging tools receiving punches |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT407618B (en) * | 1998-12-07 | 2001-05-25 | Gfm Beteiligungs & Man Gmbh | ROUND KNOWING MACHINE |
| JP4170661B2 (en) * | 2002-04-26 | 2008-10-22 | アイダエンジニアリング株式会社 | Mechanical press |
| US7010953B2 (en) * | 2003-02-04 | 2006-03-14 | Interface Associates, Inc. | Swaging machine and method of use |
| US6993953B2 (en) * | 2003-02-04 | 2006-02-07 | Interface Associates, Inc. | Swaging die and method of use |
| US7013800B2 (en) * | 2003-07-30 | 2006-03-21 | Aida Engineering Co., Ltd | Mechanical press |
| CN100415497C (en) * | 2003-08-13 | 2008-09-03 | 曾田工程技术有限公司 | Mechanical press |
| JP2009519770A (en) | 2005-12-16 | 2009-05-21 | インターフェイス・アソシエイツ・インコーポレーテッド | Medical multilayer balloon and method for producing the same |
| CN102009484A (en) * | 2010-09-28 | 2011-04-13 | 天津市天锻压力机有限公司 | Hydraulic cylinder plunger installation structure for powder hydraulic press |
| CN102218496A (en) * | 2011-05-13 | 2011-10-19 | 无锡市乾丰锻造有限公司 | Forging press plunger |
| US9873146B2 (en) | 2014-02-10 | 2018-01-23 | Danieli & C. Officine Meccaniche S.P.A. | Forging machine |
| WO2017084952A1 (en) * | 2015-11-20 | 2017-05-26 | Sms Group Gmbh | Mechanical press with sliding block |
| CN105666911A (en) * | 2016-01-22 | 2016-06-15 | 余苏祥 | Die device adopting thread transmission andhaving thread protection function |
| CN105666914A (en) * | 2016-01-22 | 2016-06-15 | 杨晓丹 | Novel die device capable of protecting thread transmission |
| CN105666910A (en) * | 2016-01-22 | 2016-06-15 | 余苏祥 | Die manufacture device having thread protection function through position locking blocks |
| CN105666912A (en) * | 2016-01-22 | 2016-06-15 | 余苏祥 | Intelligent die device adopting thread transmission |
| CN105666913A (en) * | 2016-01-22 | 2016-06-15 | 余苏祥 | Intelligent die manufacture device |
| CN106623719B (en) * | 2017-02-24 | 2019-04-26 | 王安基 | Forging mechanism and forging machine |
| CN109263111B (en) * | 2018-09-30 | 2020-11-17 | 西安交通大学 | Hydraulic crank eccentricity adjusting device of crank press |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE543971A (en) * | 1954-12-28 | |||
| DE2358390A1 (en) * | 1973-11-15 | 1975-05-28 | Gfm Fertigungstechnik | High speed, short stroke forging press - using two separate screw-drives for actuating and adjusting the stroke |
| JPS60157832A (en) * | 1984-01-27 | 1985-08-19 | Toppan Printing Co Ltd | Flat-bed pressure type laminating machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011809A (en) * | 1974-04-03 | 1977-03-15 | L. Schuler Gmbh | Press with hydraulic overload safety device and ram weight counterbalancing mechanism |
| US4096728A (en) * | 1977-07-27 | 1978-06-27 | Gulf & Western Manufacturing Company | Adjusting device for slide driven lift out actuators |
| AT370351B (en) * | 1981-11-16 | 1983-03-25 | Gfm Fertigungstechnik | FORGING MACHINE |
| JPS58215235A (en) * | 1982-06-10 | 1983-12-14 | Sumitomo Heavy Ind Ltd | Forging press |
| JPS58189041U (en) * | 1982-06-12 | 1983-12-15 | 株式会社神戸製鋼所 | Forging press slide fixing device |
| JPS6257728A (en) * | 1985-09-09 | 1987-03-13 | Japan Steel Works Ltd:The | Forging press |
| US4677908A (en) * | 1985-12-11 | 1987-07-07 | Aida Engineering, Ltd. | Slide adjusting device for a press |
| JPS63144899A (en) * | 1986-12-04 | 1988-06-17 | Kosumetsuku:Kk | Die height adjuster for mechanical press |
| JPH0757440B2 (en) * | 1990-08-30 | 1995-06-21 | アイダエンジニアリング株式会社 | Die height adjusting device for press machine |
| US5345861A (en) * | 1993-04-20 | 1994-09-13 | The Minater Machine Company | Press adjustment screw mechanism |
| US5349902A (en) * | 1993-04-20 | 1994-09-27 | The Minster Machine Company | Press shutheight adjustment mechanism |
| JP3345144B2 (en) * | 1993-12-27 | 2002-11-18 | アイダエンジニアリング株式会社 | Slide machine for press machine |
-
1995
- 1995-01-16 ES ES95890013T patent/ES2107901T3/en not_active Expired - Lifetime
- 1995-01-16 DE DE59500759T patent/DE59500759D1/en not_active Expired - Lifetime
- 1995-01-16 EP EP95890013A patent/EP0667197B1/en not_active Expired - Lifetime
- 1995-01-17 US US08/373,638 patent/US5609056A/en not_active Expired - Lifetime
- 1995-01-18 JP JP7005921A patent/JP2837366B2/en not_active Expired - Fee Related
- 1995-01-18 CN CN95101332A patent/CN1062501C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE543971A (en) * | 1954-12-28 | |||
| DE2358390A1 (en) * | 1973-11-15 | 1975-05-28 | Gfm Fertigungstechnik | High speed, short stroke forging press - using two separate screw-drives for actuating and adjusting the stroke |
| JPS60157832A (en) * | 1984-01-27 | 1985-08-19 | Toppan Printing Co Ltd | Flat-bed pressure type laminating machine |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 9, no. 322 (M - 440)<2045> 18 December 1985 (1985-12-18) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT404441B (en) * | 1996-09-17 | 1998-11-25 | Gfm Holding Ag | FORGING MACHINE |
| US5894755A (en) * | 1996-09-17 | 1999-04-20 | Gfm Holding Aktiengesellschaft | Forging machine |
| US6308552B1 (en) | 1998-12-09 | 2001-10-30 | Gfm Betteiligungs- Und Management Gmbh & Co. Kg | Forging machine |
| CN102921858A (en) * | 2012-10-26 | 2013-02-13 | 无锡欧亚电梯设备有限公司 | Crankshaft connecting rod assembly for forging machine tools |
| DE102015115660A1 (en) | 2014-10-02 | 2016-04-07 | GFM - GmbH | Forging device with guided in the lifting direction, forging tools receiving punches |
| US10166596B2 (en) | 2014-10-02 | 2019-01-01 | Gfm-Gmbh | Forging apparatus with forging rams guided in the direction of stroke and accommodating forging tools |
| DE102015115660B4 (en) * | 2014-10-02 | 2020-10-08 | GFM - GmbH | Forging device with a rotationally symmetrical arrangement of the forging tools, with punches that are guided in the stroke direction and receive the forging tools |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1112038A (en) | 1995-11-22 |
| ES2107901T3 (en) | 1997-12-01 |
| EP0667197B1 (en) | 1997-10-08 |
| JP2837366B2 (en) | 1998-12-16 |
| DE59500759D1 (en) | 1997-11-13 |
| US5609056A (en) | 1997-03-11 |
| JPH08141684A (en) | 1996-06-04 |
| CN1062501C (en) | 2001-02-28 |
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