WO2004056559A1 - Pressing device - Google Patents

Pressing device Download PDF

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Publication number
WO2004056559A1
WO2004056559A1 PCT/DE2003/004005 DE0304005W WO2004056559A1 WO 2004056559 A1 WO2004056559 A1 WO 2004056559A1 DE 0304005 W DE0304005 W DE 0304005W WO 2004056559 A1 WO2004056559 A1 WO 2004056559A1
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WIPO (PCT)
Prior art keywords
press
motor
eccentric
drive
direct drive
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PCT/DE2003/004005
Other languages
German (de)
French (fr)
Inventor
Rudolf Feuchter
Original Assignee
Siemens Aktiengesellschaft
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Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2004056559A1 publication Critical patent/WO2004056559A1/en

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Classifications

    • 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
    • B30B1/266—Drive systems for the cam, eccentric or crank axis

Definitions

  • the invention relates to a pressing device with an eccentric, a connecting rod and at least one press ram arranged thereon.
  • An electric drive motor preferably a DC motor as the main drive, which is operated at a continuous speed, drives a flywheel via a gear.
  • This flywheel is mechanically connected to an eccentric device via a clutch braking device and possibly a further transmission.
  • the on and off of the press device i.e.
  • the connecting rod moves via the clutch brake device.
  • the electric drive motor i.e. the main drive continues to run.
  • special design measures are necessary, such as those e.g. are described in EP 0 561 604 B1.
  • the drive of the eccentric has at least one point a planetary gear, with which a rotary movement originating from a main drive can be superimposed on a further rotary movement.
  • the main drive is connected to the sun gear, while the eccentric is driven by the planet carrier and the ring gear is driven by an auxiliary drive.
  • an eccentric press is known from DE-PS 40 90 75, in which an adjustment tion of the movement curve is to be achieved.
  • the aim is to reduce or dose the impact speed of the ram including the upper part of the tool on the lower part.
  • the aim is to protect the tools and improve the shape of the parts, such as the special print from the Blech InForm magazine, 1/2000, "Cleverly combined", Carl Hanser Verlag Kunststoff, and Schuler Handbook for Forming Technology, Drive Types, page 54 ff Springer Verlag 1996 can be described.
  • the invention is therefore based on the object to create a drive of a pressing device with simple measures, which on the one hand allow protection of the tools and thus can influence the movement of the press ram in a simple manner.
  • a pressing device with a main drive which is designed as a rotary direct drive, an eccentric, a connecting rod and at least one press ram arranged thereon.
  • the high moments or forces provided by a direct drive according to the invention enable a direct coupling with the eccentric, the connecting rod and the press ram arranged thereon. This saves gears, flywheels, clutches and brakes. This also reduces the maintenance that is normally associated with it and reduces press downtimes.
  • the direct drive is preferably implemented as a rotary motor.
  • a direct drive according to the invention, the sequence of movements of the press ram can now be stored in the program and can thus be selected depending on the application.
  • a full acceleration of the press ram is set from 0 to 150 °, while between a range a speed reduction of 150-190 ° is used because the forming process should take place as gently as possible. This reduction in speed is necessary, as stated in the specialist articles mentioned above, in order to obtain a corresponding quality of the forming.
  • the press ram can then be accelerated back to its original position at full speed.
  • the direct drive enables longer cycle times and thus more economical operation compared to conventional drive systems.
  • linear motors are also advantageous to use linear motors as direct drives.
  • polygonal motors are to be provided for high power deployments.
  • flywheel between the direct drive and the eccentric if necessary. This flywheel mass must be taken into account in the control of the motion sequence and thus in the control of the direct drive as the main drive.
  • the torque motors are particularly advantageous to provide torque motors as direct drives which emit high torque at comparatively low speeds.
  • the torque output is at least a factor of 2 greater than that of corresponding servomotors with comparable performance.
  • the speed is also lower than with a corresponding servo motor comparable performance, for example by a factor of 2 to 10.
  • the torque motor is relatively high-pole (> 20-pole).
  • all direct drives can be equipped with the corresponding outer cooling jackets in order to obtain the maximum available power.
  • the direct drive can also be operated without cooling, but this results in a corresponding reduction in the continuous torque.
  • Curve 1 shows stroke-angle diagrams of press rams of different pressing devices. The stroke of the press ram over the crank angle of an eccentric 10 is recorded. Curve 1 shows a course to be aimed for, which can be implemented in a simple manner by a main drive according to the invention such as linear motor 14 or rotary motors 13 via the control 14 of the motor. This movement characteristic harbors ideal conditions, especially for a deep-drawing process. The part is formed at a low, almost constant speed.
  • Curve 2 shows the sinusoidal shape of a press ram of a classic eccentric press and curve 3 of an articulated press.
  • Such a control 14 of the direct drive fulfills the quality requirement of the forming, according to the theoretical specifications of the above-mentioned specialist articles.
  • Up to a crank angle of the Ex- center 10 reaches a maximum acceleration and speed in order to then be able to carry out the forming process in a material-friendly manner at a reduced speed.
  • the press ram 11 can be moved back to the starting position with maximum acceleration and speed.
  • This stroke-angle diagram according to FIG. 1 shows, in particular, the course of the press ram of various eccentric drive presses, but also in the case of a linear drive which
  • the connecting rod 12 and thus the press ram 11 are moved directly.
  • a forming process is accordingly gentle on the material via the engine control, e.g. according to curve 1.
  • Torque motor 13 is executed, which is coupled to an eccentric 10 directly via a shaft 15.
  • the eccentric 10 has a connecting rod 12 which carries out the circumferential process via a press ram 11.
  • the operational on / off of the pressing device takes place by moving the connecting rod 12 directly via the torque motor 13.
  • the torque motor 13 thus runs through a wide adjustable speed range in comparison to the prior art during a forming process. Depending on the forming process (type and amount of material displacement or pressing) and material, the torque motor 13 can be controlled.
  • a linear motor is also suitable for performing the forming movement of the press ram.
  • the connecting rod with its press ram is connected directly to a linear motor, ie without the interposition of an eccentric.
  • the sequence of movements of the press ram is controlled directly via the motor control, ie the operational on / off of the pressing device is done by the motor control and not by a clutch / brake device.
  • the linear motor can be designed as a polygonal motor or tubular motor, so that higher torques can be achieved compared to a conventional linear motor. These motors do not have a flat air gap, but a tubular air gap.
  • the outline of the cross-section of this tube can be polygonal or round.
  • All of the exemplary embodiments according to the invention mean that, in comparison with the prior art, an almost arbitrary travel-time or stroke-crank angle characteristic of the press ram 11 can be set by controlling a direct drive, in particular a torque motor 13, accordingly. Operational on / off movement of the pressing devices no longer take place via clutch braking devices, but only via control 14 of the motor. This reduces all maintenance intervals of complex monitoring equipment for the mechanics and hydraulics.
  • flywheels may have to be used.
  • the operational on / off movements of the pressing device are carried out by the motor control. If necessary, however, suitable emergency stop devices must be provided via the engine control and / or mechanical devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)

Abstract

The aim of the invention is to be able to control, in a pressing device, the course of motion of the press ram (11) thereby, with a low degree of complexity, preserving the press ram (11) and increasing the quality of the shaping. To this end, the pressing device is driven by a direct drive provided in the form of a main drive, particularly by a torque motor.

Description

Beschreibungdescription
PressVorrichtungpressing device
Die Erfindung betrifft eine Pressvorrichtung mit einem Exzenter, einer Pleuelstange und zumindest einem daran angeordneten Pressenstößel.The invention relates to a pressing device with an eccentric, a connecting rod and at least one press ram arranged thereon.
Die bisher bekannten Pressvorrichtungen arbeiten nach folgen- dem Prinzip. Ein elektrischer Antriebsmotor vorzugsweise ein Gleichstrommotor als Hauptantrieb, der mit einer kontinuierlichen Drehzahl betrieben wird, treibt über ein Getriebe eine Schwungmasse an. Diese Schwungmasse ist über ein Kupplungs- Bremseinrichtung und gegebenenfalls einem weiteren Getriebe mit einer Exzentervorrichtung mechanisch verbunden. An dieser Exzentervorrichtung befindet sich eine Pleuelstange mit einem Pressenstößel, der den Pressvorgang durchführt.The previously known pressing devices work according to the following principle. An electric drive motor, preferably a DC motor as the main drive, which is operated at a continuous speed, drives a flywheel via a gear. This flywheel is mechanically connected to an eccentric device via a clutch braking device and possibly a further transmission. On this eccentric device there is a connecting rod with a press ram that carries out the pressing process.
Das Ein bzw. Aus der Pressvorrichtung, d.h. Bewegung der Pleuelstange erfolgt über die Kupplungs-Bremseinrichtung. Der elektrische Antriebsmotor, d.h. der Hauptantrieb läuft kontinuierlich weiter. Um nunmehr den Bewegungsablauf des Stößels zu beeinflussen, sind besondere konstruktive Maßnahmen notwendig, wie sie z.B. in der EP 0 561 604 Bl beschrieben sind.The on and off of the press device, i.e. The connecting rod moves via the clutch brake device. The electric drive motor, i.e. the main drive continues to run. In order to influence the movement of the ram now, special design measures are necessary, such as those e.g. are described in EP 0 561 604 B1.
Dort ist eine Exzenterpresse beschrieben, bei der die Winkelgeschwindigkeit des Exzenters modulierbar ist. Dazu weist der Antrieb des Exzenters an wenigstens einer Stelle ein Planetengetriebe auf, mit dem einer von einem Hauptantrieb herrüh- renden Drehbewegung eine weitere Drehbewegung überlagert werden kann. Beispielsweise ist der Hauptantrieb an das Sonnenrad angeschlossen, während der Exzenter von dem Planetenträger her angetrieben ist und das Hohlrad mit einem Hilfsantrieb angetrieben ist.An eccentric press is described there, in which the angular velocity of the eccentric can be modulated. For this purpose, the drive of the eccentric has at least one point a planetary gear, with which a rotary movement originating from a main drive can be superimposed on a further rotary movement. For example, the main drive is connected to the sun gear, while the eccentric is driven by the planet carrier and the ring gear is driven by an auxiliary drive.
Des Weiteren ist aus der DE-PS 40 90 75 eine Exzenterpresse bekannt, bei der über einen Hydraulikzylinder eine Einstel- lung der Bewegungskurve erreicht werden soll. Damit wird angestrebt, dass die Auftreffgeschwindigkeit des Stößels inklusive des Werkzeugsoberteil auf dem Unterteil reduziert bzw. dosiert wird. Damit wird eine Schonung der Werkzeuge angestrebt und eine bessere Ausprägung der Teile, wie sie z.B. dem Sonderdruck aus der Zeitschrift Blech InForm, 1/2000, "Geschickt kombiniert", Carl Hanser Verlag München, und Schuler Handbuch für Umformtechnik, Antriebsarten, Seite 54 ff. Springer Verlag 1996 beschrieben werden.Furthermore, an eccentric press is known from DE-PS 40 90 75, in which an adjustment tion of the movement curve is to be achieved. The aim is to reduce or dose the impact speed of the ram including the upper part of the tool on the lower part. The aim is to protect the tools and improve the shape of the parts, such as the special print from the Blech InForm magazine, 1/2000, "Cleverly combined", Carl Hanser Verlag Munich, and Schuler Handbook for Forming Technology, Drive Types, page 54 ff Springer Verlag 1996 can be described.
Der Erfindung liegt demnach die Aufgabe zugrunde, mit einfachen Maßnahmen einen Antrieb einer Pressvorrichtung zu schaffen, die zum einen eine Schonung der Werkzeuge ermöglichen und damit in einfacher Art und Weise den Bewegungsablauf des Pressenstempels beeinflussen kann.The invention is therefore based on the object to create a drive of a pressing device with simple measures, which on the one hand allow protection of the tools and thus can influence the movement of the press ram in a simple manner.
Die Lösung der gestellten Aufgabe gelingt durch eine Pressvorrichtung mit einem Hauptantrieb, der als rotatorischer Direktantrieb ausgeführt ist, einem Exzenter, einer Pleuelstan- ge und zumindest einem daran angeordneten Pressenstößel.The problem is solved by a pressing device with a main drive, which is designed as a rotary direct drive, an eccentric, a connecting rod and at least one press ram arranged thereon.
Die von einem erfindungsgemäßen Direktantrieb bereitgestellten hohen Momente bzw. Kräfte ermöglichen eine direkte Kupplung mit dem Exzenter, der Pleuelstange und dem daran ange- ordneten Pressenstößel. Damit sind Getriebe, Schwungmassen, Kupplungen und Bremsen eingespart. Somit reduziert sich auch die damit normalerweise verbundene Wartung und es reduzieren sich Pressenstillstandszeiten.The high moments or forces provided by a direct drive according to the invention enable a direct coupling with the eccentric, the connecting rod and the press ram arranged thereon. This saves gears, flywheels, clutches and brakes. This also reduces the maintenance that is normally associated with it and reduces press downtimes.
Der Direktantrieb ist vorzugsweise als rotatorischer Motor realisiert. Durch einen derartigen erfindungsgemäßen Direktantrieb kann nunmehr der Bewegungsablauf des Pressenstößels programmtechnisch hinterlegt werden, und damit je nach Anwendungsfall ausgewählt werden. So wird z.B. bei einem rotatori- sehen Motor, der über einen Exzenter mit der Pleuelstange verbunden ist, von 0 bis 150° eine volle Beschleunigung des Pressenstößels eingestellt, während zwischen einem Bereich von 150-190° eine Geschwindigkeitsreduzierung einsetzt, da dort der Umformvorgang möglichst materialschonend stattfinden soll. Diese Geschwindigkeitsreduzierung ist, wie in den oben genannten Fachartikeln ausgeführt, notwendig, um eine dement- sprechende Qualität der Umformung zu erhalten. Danach kann der Pressenstößel wieder auf volle Geschwindigkeit in seine Ausgangslage zurückbeschleunigt werden.The direct drive is preferably implemented as a rotary motor. By means of such a direct drive according to the invention, the sequence of movements of the press ram can now be stored in the program and can thus be selected depending on the application. For example, in the case of a rotary engine which is connected to the connecting rod via an eccentric, a full acceleration of the press ram is set from 0 to 150 °, while between a range a speed reduction of 150-190 ° is used because the forming process should take place as gently as possible. This reduction in speed is necessary, as stated in the specialist articles mentioned above, in order to obtain a corresponding quality of the forming. The press ram can then be accelerated back to its original position at full speed.
Der Direktantrieb ermöglicht gegenüber herkömmlichen An- triebssystemen höhere Taktzeiten und damit einen wirtschaftlicheren Betrieb.The direct drive enables longer cycle times and thus more economical operation compared to conventional drive systems.
Durch den erfindungsgemäßen Direktantrieb der Pressvorrichtung kann nunmehr der Bewegungsablauf nahezu beliebig einge- stellt werden. Es sind keine umständlichen mechanischen oder hydraulischen Vorrichtungen notwendig, die dann mehr oder weniger für die Maschine und den Anwendungsfall festgelegt sind.With the direct drive of the pressing device according to the invention, the movement sequence can now be set almost arbitrarily. No complicated mechanical or hydraulic devices are necessary, which are then more or less defined for the machine and the application.
Da der Pressvorgang eine Linearbewegung darstellt, sind vorteilhafterweise auch Linearmotor als Direktantrieb einzusetzen. Insbesondere sind für hohe Kraftentfaltungen Polygonalmotoren vorzusehen.Since the pressing process is a linear movement, it is also advantageous to use linear motors as direct drives. In particular, polygonal motors are to be provided for high power deployments.
Für sehr hohe Umformleistungen kann insbesondere bei einem rotatorischen Antrieb vorteilhaft sein, zwischen Direktantrieb und Exzenter gegebenenfalls eine Schwungmasse vorzusehen. Diese Schwungmasse ist aber in der Steuerung des Bewegungsablaufs und damit in der Steuerung des Direktantriebs als Hauptantrieb zu berücksichtigen.For very high forming capacities, in particular in the case of a rotary drive, it may be advantageous to provide a flywheel between the direct drive and the eccentric if necessary. This flywheel mass must be taken into account in the control of the motion sequence and thus in the control of the direct drive as the main drive.
Besonders vorteilhaft ist es, als Direktantrieb Torque- Motoren vorzusehen, die bei vergleichsweise niederen Drehzahlen hohes Drehmoment abgeben. Das dabei abgegebene Drehmoment ist gegenüber entsprechenden Servomotoren mit vergleichbarer Leistung mindestens um den Faktor 2 größer. Ebenso ist die Drehzahl niedriger als bei einem entsprechenden Servomotor vergleichbarer Leistung, beispielsweise um den Faktor 2 bis 10. Außerdem ist der Torque-Motor relativ hochpolig (> 20- polig) .It is particularly advantageous to provide torque motors as direct drives which emit high torque at comparatively low speeds. The torque output is at least a factor of 2 greater than that of corresponding servomotors with comparable performance. The speed is also lower than with a corresponding servo motor comparable performance, for example by a factor of 2 to 10. In addition, the torque motor is relatively high-pole (> 20-pole).
Des Weiteren können sämtliche Direktantriebe mit dementspre- chenden äußeren Kühlmäntel versehen werden um die maximal verfügbare Leistung zu erhalten. Der Direktantrieb kann auch ungekühlt betrieben werden, damit ergibt sich aber eine entsprechende Reduzierung des Dauerdrehmoments.Furthermore, all direct drives can be equipped with the corresponding outer cooling jackets in order to obtain the maximum available power. The direct drive can also be operated without cooling, but this results in a corresponding reduction in the continuous torque.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung sind den schematisch dargestellten Ausführungsbeispielen zu entnehmen.The invention and further advantageous refinements of the invention can be found in the schematically illustrated exemplary embodiments.
FIG 1 ein charakteristisches Hub-Winkel-Diagramm,1 shows a characteristic stroke-angle diagram,
FIG 2 prinzipielle Darstellungsform eines rotatorischen Direktantriebs,2 basic representation of a rotary direct drive,
FIG 1 zeigt Hub-Winkel-Diagramme von Pressenstößeln unter- schiedlicher Pressvorrichtungen. Dabei ist der Hub des Pressenstößels über dem Kurbelwinkel eines Exzenters 10 aufgezeichnet. Kurve 1 zeigt dabei einen anzustrebenden Verlauf, der durch einen erfindungsgemäßen Hauptantriebe wie Linearmotor 14 oder rotatorische Motoren 13 in einfacher Art und Wei- se über die Steuerung 14 des Motors realisiert werden kann. Diese Bewegungscharakteristik birgt ideale Vorrausetzungen insbesondere für einen Tiefziehprozess. Das Teil wird mit einer geringen annähernd konstanten Geschwindigkeit umgeformt.1 shows stroke-angle diagrams of press rams of different pressing devices. The stroke of the press ram over the crank angle of an eccentric 10 is recorded. Curve 1 shows a course to be aimed for, which can be implemented in a simple manner by a main drive according to the invention such as linear motor 14 or rotary motors 13 via the control 14 of the motor. This movement characteristic harbors ideal conditions, especially for a deep-drawing process. The part is formed at a low, almost constant speed.
Kurve 2 zeigt den sinusförmigen Verlauf eines Pressenstößels einer klassischen Exzenterpresse und Kurve 3 einer Gelenkpresse .Curve 2 shows the sinusoidal shape of a press ram of a classic eccentric press and curve 3 of an articulated press.
Eine derartige Steuerung 14 des Direktantriebes erfüllt die Qualitätsanforderung der Umformung, gemäß theoretischer Vorgaben, der oben genannten Fachartikeln. Dabei wird bis zu einem über die Motorsteuerung vorgebbaren Kurbelwinkel des Ex- zenters 10 eine maximale Beschleunigung und Geschwindigkeit erreicht, um anschließend bei reduzierter Geschwindigkeit den Umformprozess materialschonend durchführen zu können. Nach dem unteren Umkehrpunkt des Exzenters 10 kann der Pressstößel 11 wieder mit maximaler Beschleunigung und Geschwindigkeit in die Ausgangslage zurückgefahren werden.Such a control 14 of the direct drive fulfills the quality requirement of the forming, according to the theoretical specifications of the above-mentioned specialist articles. Up to a crank angle of the Ex- center 10 reaches a maximum acceleration and speed in order to then be able to carry out the forming process in a material-friendly manner at a reduced speed. After the lower reversal point of the eccentric 10, the press ram 11 can be moved back to the starting position with maximum acceleration and speed.
Dieses Hub-Winkel-Diagramm gemäß FIG 1 zeigt insbesondere den Verlauf des Pressenstößels von verschiedenen Exzenteran- triebspressen, aber auch bei einem Linearantrieb, der dieThis stroke-angle diagram according to FIG. 1 shows, in particular, the course of the press ram of various eccentric drive presses, but also in the case of a linear drive which
Pleuelstange 12 und damit den Pressenstößel 11 direkt bewegt ist ein Umformvorgang dementsprechend materialschonend über die Motorsteuerung z.B. gemäß Kurve 1 durchzuführen.The connecting rod 12 and thus the press ram 11 are moved directly. A forming process is accordingly gentle on the material via the engine control, e.g. according to curve 1.
FIG 2 zeigt einen erfindungsgemäßen Direktantrieb, der als2 shows a direct drive according to the invention, which as
Torque-Motor 13 ausgeführt ist, der mit einem Exzenter 10 direkt über eine Welle 15 gekoppelt ist. Der Exzenter 10 weist eine Pleuelstange auf 12, die über einen Pressenstößel 11 den Umfangvorgang durchführt. Das betriebsmäßige Ein/Aus der Pressvorrichtung geschieht im Gegensatz zum bekannten Stand der Technik durch Bewegung der Pleuelstange 12 direkt über den Torque-Motor 13. Der Torque-Motor 13 durchfährt also bei einem Umformvorgang im Vergleich zum Stand der Technik ein weites einstellbares Geschwindigkeitsspektrum. Dabei kann je nach Umformprozess (Art und Menge der Materialverschiebung bzw. Pressung) und Material der Torque-Motor 13 angesteuert werden.Torque motor 13 is executed, which is coupled to an eccentric 10 directly via a shaft 15. The eccentric 10 has a connecting rod 12 which carries out the circumferential process via a press ram 11. In contrast to the known prior art, the operational on / off of the pressing device takes place by moving the connecting rod 12 directly via the torque motor 13. The torque motor 13 thus runs through a wide adjustable speed range in comparison to the prior art during a forming process. Depending on the forming process (type and amount of material displacement or pressing) and material, the torque motor 13 can be controlled.
Ein Linearmotor ist ebenfalls zur Durchführung der Umformbe- wegung des Pressenstößels geeignet. Die Pleuelstange mit ihrem Pressenstößel ist direkt, d.h. ohne Zwischenschaltung eines Exzenters mit einem Linearmotor verbunden. Auch hier erfolgt die Steuerung des Bewegungsablaufs des Pressenstößels direkt über die Motorsteuerung, d.h. das betriebsmäßige Ein/Aus der Pressvorrichtung geschieht durch die Motorssteuerung und nicht durch eine Kupplungs-Bremsvorrichtung. Der Linearmotor kann in vorteilhafter Ausführung als Polygonalmotor oder auch Tubularmotor ausgeführt werden, so dass gegenüber einem herkömmlichen Linearmotor höhere Drehmomente erreicht werden. Bei diesen Motoren liegt kein ebener Luft- spalt vor, sondern ein röhrenförmiger Luftspalt, wobei die Umrandung des Querschnitts dieser Röhre mehreckig oder rund sein kann.A linear motor is also suitable for performing the forming movement of the press ram. The connecting rod with its press ram is connected directly to a linear motor, ie without the interposition of an eccentric. Here too, the sequence of movements of the press ram is controlled directly via the motor control, ie the operational on / off of the pressing device is done by the motor control and not by a clutch / brake device. In an advantageous embodiment, the linear motor can be designed as a polygonal motor or tubular motor, so that higher torques can be achieved compared to a conventional linear motor. These motors do not have a flat air gap, but a tubular air gap. The outline of the cross-section of this tube can be polygonal or round.
Sämtlichen erfindungsgemäßen Ausführungsbeispielen ist ge- meint, dass gegenüber dem Stand der Technik eine nahezu beliebige Weg-Zeit- bzw. Hub-Kurbelwinkel-Charakteristik des Pressenstößels 11 einstellbar ist, indem ein Direktantrieb insbesondere ein Torque-Motor 13 dementsprechend angesteuert wird. Betriebsmäßige Ein/-Aus-Bewegung der Pressvorrichtungen erfolgen nicht mehr über Kupplungs-Bremsvorrichtungen, sondern lediglich über Steuerung 14 des Motors. Damit reduzieren sich sämtliche Wartungsintervalle aufwendige Überwachungseinrichtung der Mechanik und der Hydraulik.All of the exemplary embodiments according to the invention mean that, in comparison with the prior art, an almost arbitrary travel-time or stroke-crank angle characteristic of the press ram 11 can be set by controlling a direct drive, in particular a torque motor 13, accordingly. Operational on / off movement of the pressing devices no longer take place via clutch braking devices, but only via control 14 of the motor. This reduces all maintenance intervals of complex monitoring equipment for the mechanics and hydraulics.
Zur Steigerung der Umformkräfte bei den rotatorischen Direktantrieben als Hauptantrieb sind gegebenenfalls Schwungmassen einzusetzen.In order to increase the forming forces with the rotary direct drives as the main drive, flywheels may have to be used.
Die betriebsmäßigen Ein/Aus Bewegungen der Pressvorrichtung werden durch die Motorsteuerung vorgenommen. Es sind aber gegebenenfalls geeignete Not-Aus-Vorrichtungen über die Motorsteuerung und/oder mechanische Vorrichtungen vorzusehen. The operational on / off movements of the pressing device are carried out by the motor control. If necessary, however, suitable emergency stop devices must be provided via the engine control and / or mechanical devices.

Claims

Patentansprüche claims
1. Pressvorrichtung mit einem Hauptantrieb, der als rotatori- scher Direktantrieb (13) ausgeführt ist, einem Exzenter (10), einer Pleuelstange (12) und zumindest einem daran angeordneten Pressenstößel (11) .1. Press device with a main drive, which is designed as a rotary direct drive (13), an eccentric (10), a connecting rod (12) and at least one press ram (11) arranged thereon.
2. Pressvorrichtung nach Anspruch 1, d a d u r c h g e - k e n n z e i c h n e t , dass als Direktantrieb ein frequenzgesteuerter Drehstrommotor (13) einsetzbar ist.2. Press device according to claim 1, so that a frequency-controlled three-phase motor (13) can be used as a direct drive.
3. Pressvorrichtung nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , dass der drehfrequenzgesteuerte Drehstrommotor ein permanenterregter Synchronmotor (13) ist.3. Press device according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the frequency-controlled three-phase motor is a permanently excited synchronous motor (13).
4. Pressvorrichtung nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , dass als Direktantrieb ein Torque-Motor (13) einsetzbar sind.4. Press device according to claim 3, that a torque motor (13) can be used as a direct drive.
5. Pressvorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die Pressvorrichtung zusätzlich eine No-Aus-Vorrichtung und/oder eine Schwungmasse aufweist.5. Press device according to one of the preceding claims, that the pressing device additionally has a no-off device and / or a flywheel.
6. Pressvorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass eine Steuerung (14) des Direktantriebs vorgesehen ist, die eine nahezu beliebige Weg-Zeit-Charakteristik des Pressenstößels (11) erlaubt.6. Press device according to one of the preceding claims, that a control (14) of the direct drive is provided which allows an almost arbitrary travel-time characteristic of the press ram (11).
7. Pressvorrichtung nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t , dass materialabhängige und/oder prozessabhängige Steuerungsabläufe einstellbar und/oder wähl- bar sind. 7. Press device according to claim 6, so that material-dependent and / or process-dependent control processes are adjustable and / or selectable.
PCT/DE2003/004005 2002-12-19 2003-12-05 Pressing device WO2004056559A1 (en)

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DE2002160127 DE10260127A1 (en) 2002-12-19 2002-12-19 pressing device

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640145A1 (en) * 2004-09-27 2006-03-29 Burkhardt GmbH Maschinenfabrik Direct drive and control for eccentric press
EP1800850A2 (en) * 2005-12-23 2007-06-27 Desch Antriebstechnik GmbH & Co. KG Drive device for a forming machine, in particular press drive, and forming machine
WO2007091118A1 (en) * 2006-02-06 2007-08-16 Abb Research Ltd Mechanical press drive system and method
DE102006050298A1 (en) * 2006-10-23 2008-04-30 Ortlinghaus-Werke Gmbh Drive for a press
DE102008028652B3 (en) * 2008-06-18 2010-01-14 Schuler Pressen Gmbh & Co. Kg Press Direct Drive
DE102008034971A1 (en) 2008-07-25 2010-01-28 Müller Weingarten AG Drive system of a forming press
US7805973B2 (en) 2006-02-06 2010-10-05 Abb Research Ltd. Mechanical press drive system
DE102009032231A1 (en) * 2009-07-08 2011-01-13 Schuler Pressen Gmbh & Co. Kg Drive device, particularly for press or corpus-press, has stator, which is mounted with rotor pivoted around axis of rotation in back and forth manner
DE102009029921A1 (en) * 2009-06-23 2011-01-20 Schuler Pressen Gmbh & Co. Kg Eccentric direct drive
DE102007026727B4 (en) * 2006-06-08 2014-12-31 Müller Weingarten AG Drive system of a forming press
DE102010031100B4 (en) * 2010-07-08 2017-09-14 Zeulenroda Presstechnik Gmbh Forming press with direct drive by segment motors
US11084240B2 (en) * 2015-11-20 2021-08-10 Sms Group Gmbh Path-controlled press having a sliding block

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006015581B3 (en) * 2006-04-04 2007-10-04 Aradex Ag Deformation process implementing method, involves determining temporal sequences of motor current as measure for force or torque of direct drive by integrating measuring device in direct drive
DE102008064229A1 (en) 2008-12-22 2010-07-01 Müller Weingarten AG Method for controlling a forging press
DE102009035215A1 (en) 2009-07-29 2011-02-10 Dieffenbacher Gmbh + Co. Kg Press with a directly driven crank mechanism
DE102009035214A1 (en) 2009-07-29 2011-02-24 Dieffenbacher Gmbh + Co. Kg Press with a directly driven crank mechanism
DE102009051876A1 (en) 2009-11-04 2011-05-05 Dieffenbacher Gmbh + Co. Kg Press with a directly driven crank mechanism
DE102009051939A1 (en) 2009-11-04 2011-05-05 Dieffenbacher Gmbh + Co. Kg Press with a directly driven crank mechanism, press line of such presses and a method for producing a press with at least one direct drive.
DE202009015008U1 (en) 2009-11-04 2011-03-24 Dieffenbacher Gmbh + Co. Kg Press with a directly driven crank mechanism
DE102011011560A1 (en) * 2011-02-18 2012-08-23 Jörg von Seggern Maschinenbau GmbH Lifting device for a tool

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840710A1 (en) * 1978-06-05 1979-12-06 Klaussner Hans Jurgen MECHANICAL ECCENTRIC PRESS
DE4109796A1 (en) * 1991-03-26 1992-10-01 Georg Burger Adjustable press for workpiece forging with reciprocating drive - has axially guided press-tool driven by crank coupling to servomotor
JPH07323396A (en) * 1994-06-03 1995-12-12 Shigenobu Yoshida Method for transmitting driving power to ram in crank press
US5697146A (en) * 1994-12-28 1997-12-16 Yazaki Corporation Apparatus for crimping terminal to electrical wire
EP0834394A1 (en) * 1996-10-03 1998-04-08 Murata Kikai Kabushiki Kaisha Servo-motor driven press device
US5832816A (en) * 1995-12-15 1998-11-10 Amada Mfg America Inc. Ram driving device and press machine using same
JP2000288792A (en) * 1999-04-06 2000-10-17 Amada Co Ltd Press working machine
JP2001150198A (en) * 1999-11-22 2001-06-05 Nippon Densan Kyori Kk Servo press

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE409075C (en) * 1925-01-31 Alois Karl Nowak Press with transfer fluid between the punch and its drive member
US5425682A (en) * 1992-03-16 1995-06-20 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Power transmission for mechanical press
DE19806751A1 (en) * 1998-02-18 1999-08-19 Schuler Pressen Gmbh & Co Press or press system with electric drive based on the linear motor principle
DE29923758U1 (en) * 1999-04-13 2001-05-03 Garth, Harald, 87509 Immenstadt Machine for punching, bending and / or assembling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2840710A1 (en) * 1978-06-05 1979-12-06 Klaussner Hans Jurgen MECHANICAL ECCENTRIC PRESS
DE4109796A1 (en) * 1991-03-26 1992-10-01 Georg Burger Adjustable press for workpiece forging with reciprocating drive - has axially guided press-tool driven by crank coupling to servomotor
JPH07323396A (en) * 1994-06-03 1995-12-12 Shigenobu Yoshida Method for transmitting driving power to ram in crank press
US5697146A (en) * 1994-12-28 1997-12-16 Yazaki Corporation Apparatus for crimping terminal to electrical wire
US5832816A (en) * 1995-12-15 1998-11-10 Amada Mfg America Inc. Ram driving device and press machine using same
EP0834394A1 (en) * 1996-10-03 1998-04-08 Murata Kikai Kabushiki Kaisha Servo-motor driven press device
JP2000288792A (en) * 1999-04-06 2000-10-17 Amada Co Ltd Press working machine
JP2001150198A (en) * 1999-11-22 2001-06-05 Nippon Densan Kyori Kk Servo press

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10) *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1640145A1 (en) * 2004-09-27 2006-03-29 Burkhardt GmbH Maschinenfabrik Direct drive and control for eccentric press
EP1800850A2 (en) * 2005-12-23 2007-06-27 Desch Antriebstechnik GmbH & Co. KG Drive device for a forming machine, in particular press drive, and forming machine
DE102005062168A1 (en) * 2005-12-23 2007-06-28 Desch Antriebstechnik Gmbh & Co. Kg Drive device for a forming machine, in particular press drive, as well as forming machine
EP1800850A3 (en) * 2005-12-23 2009-03-11 Desch Antriebstechnik GmbH & Co. KG Drive device for a forming machine, in particular press drive, and forming machine
US8302452B2 (en) 2006-02-06 2012-11-06 Abb Research Ltd. Mechanical press drive system and method
WO2007091118A1 (en) * 2006-02-06 2007-08-16 Abb Research Ltd Mechanical press drive system and method
US7805973B2 (en) 2006-02-06 2010-10-05 Abb Research Ltd. Mechanical press drive system
DE102007026727B4 (en) * 2006-06-08 2014-12-31 Müller Weingarten AG Drive system of a forming press
DE102006050298A1 (en) * 2006-10-23 2008-04-30 Ortlinghaus-Werke Gmbh Drive for a press
DE102006050298B4 (en) * 2006-10-23 2009-04-02 Ortlinghaus-Werke Gmbh Drive for a press
DE102008028652B3 (en) * 2008-06-18 2010-01-14 Schuler Pressen Gmbh & Co. Kg Press Direct Drive
DE102008034971A1 (en) 2008-07-25 2010-01-28 Müller Weingarten AG Drive system of a forming press
US8910569B2 (en) 2008-07-25 2014-12-16 Mueller Weingarten Ag Drive system for a forming press
DE102009029921B4 (en) * 2009-06-23 2012-06-06 Schuler Pressen Gmbh & Co. Kg Eccentric direct drive
DE102009029921A1 (en) * 2009-06-23 2011-01-20 Schuler Pressen Gmbh & Co. Kg Eccentric direct drive
US8505449B2 (en) 2009-06-23 2013-08-13 Schuler Pressen Gmbh & Co. Kg Eccentric press with direct drive
DE102009032231A1 (en) * 2009-07-08 2011-01-13 Schuler Pressen Gmbh & Co. Kg Drive device, particularly for press or corpus-press, has stator, which is mounted with rotor pivoted around axis of rotation in back and forth manner
DE102010031100B4 (en) * 2010-07-08 2017-09-14 Zeulenroda Presstechnik Gmbh Forming press with direct drive by segment motors
US11084240B2 (en) * 2015-11-20 2021-08-10 Sms Group Gmbh Path-controlled press having a sliding block

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