EP1082185A1 - A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts - Google Patents

A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts

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Publication number
EP1082185A1
EP1082185A1 EP99922131A EP99922131A EP1082185A1 EP 1082185 A1 EP1082185 A1 EP 1082185A1 EP 99922131 A EP99922131 A EP 99922131A EP 99922131 A EP99922131 A EP 99922131A EP 1082185 A1 EP1082185 A1 EP 1082185A1
Authority
EP
European Patent Office
Prior art keywords
press
deep drawing
die cushion
press according
drives
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
EP99922131A
Other languages
German (de)
French (fr)
Other versions
EP1082185B1 (en
Inventor
Johannes Hülshorst
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP1082185A1 publication Critical patent/EP1082185A1/en
Application granted granted Critical
Publication of EP1082185B1 publication Critical patent/EP1082185B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • B30B1/18—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 screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically

Definitions

  • the invention relates to a deep drawing press according to the preamble of patent claim 1.
  • Known deep-drawing presses have a closed base frame in which a hydraulic drive cylinder for the press bear and a hydraulic support for the drawing cushion are mounted.
  • the respective guides In order to adequately guide the press bear and the die cushion, the respective guides must be designed to be comparatively long in the case of appropriately large strokes, so that known deep-drawing presses have a large overall height. It is common to place part of the overall height in a pit in the machine foundation.
  • the hall roof must be opened in order to be able to insert the deep-drawing press into the pit of the machine foundation from above, since the hall doors are usually not sufficiently large are measured.
  • a deep-drawing press is also known (DE 43 04 329 AI), whose ram carrying the upper tool is moved by several hydraulic drive elements. This well-known deep drawing press is particularly sensitive to asymmetrical loads, which lead to the upper tool being able to tilt during its stroke.
  • the deep-drawing presses which are known to be the object of the invention, on the one hand the overall height is as low as possible, and on the other hand a perfect parallel guidance of the driven press elements is possible over the entire travel path even with an eccentric load attack, the deep-drawing press being comparatively inexpensive to manufacture can be installed in conventional machine halls in the hall floor and on the hall roof without special construction measures and the movement sequence of the movable press parts can be controlled easily and precisely.
  • the arrangement of several, non-slip, coupled electric motor drives for a feed system consisting of threaded spindle and spindle nut for both the press bear and the die cushion ensures that the overall height of the deep drawing press is significantly reduced compared to known hydraulic deep drawing presses.
  • the feed system consisting of a threaded spindle and a spindle nut, allows the guide surfaces to be arranged between the press bar and the lower part of the press. Due to the design according to the invention, it is no longer necessary to support the drive for the press bear on an area of the machine frame which is rigidly connected to the lower press part. Sufficient guide surfaces, for example in the form of guide columns, between the lower part of the press and the press bar and threaded spindles extending to the top of the press bar in its highest stroke position are sufficient.
  • the die cushion can be lowered via a drive or output with a spindle and spindle nuts, and the drive or output of all four spindles is coupled without slippage, special vertical guides are unnecessary for the die cushion.
  • the drives and / or drives of both the press bear and the drawing cushion are connected in a slip-free manner via electrical shafts.
  • Electric drives or drives have the significant advantage that they can be connected to one another without slip using electrical connections alone, and they also have the advantage that the drive parameters can be controlled very precisely by the program. This creates the possibility to change the press pressure depending on the press travel during the deep-drawing process, as for the best possible deep-drawing result appears necessary.
  • Such a program-controlled process can be extremely simple ⁇ be werkstelligt.
  • Figure 1 a section through a deep drawing press in ge ⁇ opened state according to level I - I in Fig. 4;
  • Figure 2 the section through the deep drawing press in the closed state according to Fig. 1;
  • Figure 3 - a plan view in the direction of arrow
  • the base plate la On a foundation 17, the base plate la is a Pres ⁇ anchored senunterteils. 1
  • the lower press part 1 carries guide columns 3, on which a press bear 2 is guided.
  • a drawing die On the press bear 2, a drawing die is clamped as the upper tool part 7a, which with a lower tool part 7b cooperates.
  • the lower tool part 7b is clamped with its tool base plate 10 on the press table of the lower press part 1.
  • the tool base plate 10 is penetrated by drawing pins 9, which carry a drawing ring 8 on which a drawing plate 11 is available as a blank for a drawing process.
  • the drawing pins 9 are guided in guide bores 1c of the lower press part 1 and are supported on a drawing cushion 12.
  • Spindle nuts 14 for engagement with threaded spindles 13 are fastened to the die cushion 12.
  • the threaded spindles 13 are each driven by an angular gear unit 15 consisting of an angular gear 15b and a drive motor 15a. Between the threaded spindle 13 and the lower press part 1 or its base plate 1 a, a pressure measuring element 16 is provided, according to the signals of which the associated drive motor 15 a is controlled.
  • the die cushion 12, the motor-angle gear units 15 and the threaded spindles 4 are arranged in a receiving space 1b within the lower press part 1.
  • spindle nuts 5 are also non-rotatably and immovably fastened, into which threaded spindles 4 engage, which are rotatably mounted in the press bar 2.
  • a motor-angular gear unit 6 is attached to the top of the press bar 2 for each threaded spindle 4, whose motor 6a drives the threaded spindle 4 by means of the angular gear 6b.
  • the motors 6a, the angular gear 6b or the threaded spindles 4 can be coupled to one another by a slip-free connection, so that a one-sided introduction of force into the press bar 2 during Closing the tool 7 can not lead to tilting of the press bear 2.
  • the guide columns 3 of the press bear 2 therefore remain largely free of transverse forces.
  • the operator shown schematically in average size next to the deep-drawing press, clarifies that the drawing plate 11 can be inserted and removed from the deep-drawing press at shoulder height without parts of the deep-drawing press having to be laid below the level of the foundation. A stage for the operator is also not required.
  • a threaded spindle 4 is arranged in the corner areas of the press bear 2, which is driven by a motor-angular gear unit 6 is rotated.
  • the drive motors 6a are interconnected by electrical shafts, not shown. As a result, the clamping surfaces of the press bear 2 are guided exactly parallel to their starting position.
  • the die cushion 12 is prevented from tilting by four motor angular gear units 15 which are arranged in the corner regions of the die cushion 12 and which are electrically or mechanically connected to one another in a slip-free manner.
  • 4 shows the lower tool part 7b without a drawing plate 11.
  • a plurality of guide bores 1c are provided above the drawing cushion 12, of which only a few guide bores 1c lying under the drawing ring 8 are occupied by drawing pins 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A deep drawing press comprising a lower part (1) that supports the lower part of a tool (7b) and a ram hammer (2) that can move vertically along a guide, whereby said ram hammer supports the upper part of the tool (7a). A drawing cushion (12) that can move vertically in various directions is arranged underneath the lower part of the tool (7b). The movement of the drawing cushion (12) is transmitted to the element that supports the lower part of the tool (7b) and is provided for a drawing sheet (11) by means of drawing rods (9) that are guided in guide holes (1c) in the lower part (1) of the press. The ram hammer (2) is driven by means of two threaded spindles (4) that extend vertically and parallel to each other between the lower part (1) and the ram hammer (2), whereby said spindles co-operate with spindle nuts (5), the rotated drive elements are coupled to each other without any slip and the ram hammer (2) is guided along guiding surfaces that extend vertically and parallel to the threaded spindles (4) and are firmly connected to the lower part (1) of the press. The drawing cushion (12) has an electric motor drive mechanism that works by means of vertically extending threaded spindles (13) and spindle nuts (14), whereby the rotated drive and or driven elements are coupled to each other without any slip.

Description

TIEFZIEHPRESSE MIT DURCH GEWINDESPINDEL UND SPINDELMUTTER ANGETRIEBENE PRESSENBAR SOWIE ZIEHKISSENDEEP DRAW PRESS WITH PRESSABLE DRIVED BY THREAD SPINDLE AND SPINDLE NUT AND DRAWING CUSHION
TECHNISCHES GEBIETTECHNICAL AREA
Die Erfindung betrifft eine TiefZiehpresse nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a deep drawing press according to the preamble of patent claim 1.
STAND DER TECHNIKSTATE OF THE ART
Bekannte TiefZiehpressen haben einen geschlossenen Grundrahmen, in dem ein hydraulischer Antriebszylinder für den Pressenbär und eine hydraulische Abstützung des Zieh- kissens gelagert sind. Für eine ausreichende Führung des Pressenbärs und des Ziehkissens müssen bei entsprechend großen Hüben die jeweilige Führungen vergleichsweise lang ausgebildet sein, so daß bekannte TiefZiehpressen eine große Gesamthöhe aufweisen. Dabei ist es üblich, einen Teil der Bauhöhe in einer Grube im Maschinenfundament unterzubringen. Für einen Einbau der TiefZiehpresse an dem Maschinenstandort ist es wegen der großen Bauhöhe bekannter TiefZiehpressen in den meisten Fällen unerläßlich, daß das Hallendach geöffnet werden muß, um die TiefZiehpresse von oben in die Grube des Maschinenfundaments einsetzen zu können, da die Hallentüren üblicherweise nicht ausreichend groß bemessen sind.Known deep-drawing presses have a closed base frame in which a hydraulic drive cylinder for the press bear and a hydraulic support for the drawing cushion are mounted. In order to adequately guide the press bear and the die cushion, the respective guides must be designed to be comparatively long in the case of appropriately large strokes, so that known deep-drawing presses have a large overall height. It is common to place part of the overall height in a pit in the machine foundation. For the installation of the deep-drawing press at the machine location, it is essential in most cases because of the large construction height of known deep-drawing presses that the hall roof must be opened in order to be able to insert the deep-drawing press into the pit of the machine foundation from above, since the hall doors are usually not sufficiently large are measured.
Die bekannten hydraulischen TiefZiehpressen sind nicht nur groß und schwierig einzubauen, sie sind auch vergleichsweise teuer. Es ist auch eine TiefZiehpresse bekannt (DE 43 04 329 AI) , deren das Oberwerkzeug tragender Stößel durch mehrere hydraulische Antriebselemente bewegt wird. Diese bekannte TiefZiehpresse ist besonders empfindlich gegen unsymmetrische Belastungen, die dazu führen, daß das Oberwerkzeug während seines Hubes verkanten kann.The well-known hydraulic deep drawing presses are not only large and difficult to install, they are also comparatively expensive. A deep-drawing press is also known (DE 43 04 329 AI), whose ram carrying the upper tool is moved by several hydraulic drive elements. This well-known deep drawing press is particularly sensitive to asymmetrical loads, which lead to the upper tool being able to tilt during its stroke.
DIE ERFINDUNGTHE INVENTION
Ausgehend von den als bekannt vorausgesetzten TiefZiehpressen liegt der Erfindung die Aufgabe zugrunde, daß einerseits die Gesamtbauhöhe möglichst niedrig ist, und daß andererseits eine einwandfreie Parallelführung der angetrie- benen Pressenelemente auch bei exzentrischem Lastangriff über den gesamten Verfahrweg möglich ist, wobei die Tiefziehpresse vergleichsweise preisgünstig herstellbar ist, ohne besondere Baumaßnahmen im Hallenboden und am Hallendach in üblichen Maschinenhallen installiert werden kann und der Bewegungsablauf der verfahrbaren Pressenteile einfach und genau steuerbar ist.On the basis of the deep-drawing presses which are known to be the object of the invention, on the one hand the overall height is as low as possible, and on the other hand a perfect parallel guidance of the driven press elements is possible over the entire travel path even with an eccentric load attack, the deep-drawing press being comparatively inexpensive to manufacture can be installed in conventional machine halls in the hall floor and on the hall roof without special construction measures and the movement sequence of the movable press parts can be controlled easily and precisely.
Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des Patentanspruchs 1.This object is achieved with the features of patent claim 1.
Bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Preferred embodiments of the invention result from the subclaims.
Durch die Anordnung mehrerer, miteinander schlupffrei ge- koppelter, elektromotorischer Antriebe für ein aus Gewindespindel und Spindelmutter bestehendes Vorschubsystem sowohl für den Pressenbär als auch für das Ziehkissen wird die Ge- samtbauhöhe der TiefZiehpresse gegenüber bekannten hydraulischen TiefZiehpressen deutlich verringert. Das aus Gewindespindel und Spindelmutter bestehende Vorschubsystem erlaubt eine Anordnung der Führungsflächen zwischen Pressen- bär und Pressenunterteil. Durch die erfindungsgemäße Gestaltung ist es nicht mehr erforderlich, den Antrieb für den Pressenbär an einem mit dem Pressenunterteil starr verbundenen Bereich des Maschinengestells abzustützen. Es genügen zwischen Pressenunterteil und Pressenbär sich er- streckende Führungsflächen, beispielsweise in Form von Führungssäulen, und sich bis auf die Oberseite des Pressenbärs in dessen höchster Hubstellung erstreckende Gewindespindeln.The arrangement of several, non-slip, coupled electric motor drives for a feed system consisting of threaded spindle and spindle nut for both the press bear and the die cushion ensures that the overall height of the deep drawing press is significantly reduced compared to known hydraulic deep drawing presses. The feed system, consisting of a threaded spindle and a spindle nut, allows the guide surfaces to be arranged between the press bar and the lower part of the press. Due to the design according to the invention, it is no longer necessary to support the drive for the press bear on an area of the machine frame which is rigidly connected to the lower press part. Sufficient guide surfaces, for example in the form of guide columns, between the lower part of the press and the press bar and threaded spindles extending to the top of the press bar in its highest stroke position are sufficient.
Die gleichen Vorteil ergeben sich auch bei der Anordnung und Führung des Ziehkissens:The same advantages result from the arrangement and guidance of the die cushion:
Da das Ziehkissen über einen Antrieb bzw. Abtrieb mit Spindel und Spindelmuttern absenkbar ist, wobei der An- bzw. Abtrieb aller vier Spindeln schlupffrei gekoppelt ist, sind besondere Vertikalführungen für das Ziehkissen entbehrlich.Since the die cushion can be lowered via a drive or output with a spindle and spindle nuts, and the drive or output of all four spindles is coupled without slippage, special vertical guides are unnecessary for the die cushion.
Von besonderem Vorteil erweist es sich, daß die Antriebe und/oder Abtriebe sowohl des Pressenbärs als auch des Zieh- kissens über elektrische Wellen schlupffrei verbunden sind. Elektrische Antriebe bzw. Abtriebe haben den wesentlichen Vorteil, daß sie allein über elektrische Verknüpfungen schlupffrei miteinander verbunden werden können, und darüber hinaus haben sie den Vorteil, daß sich die Antriebs- kennwerte sehr genau programmsteuern lassen. Dies schafft die Möglichkeit, beim Tiefziehvorgang den Pressendruck in Abhängigkeit vom Pressenweg zu verändern, wie dies für das bestmögliche Tiefziehergebnis erforderlich erscheint. Ein solcher programmgesteuerter Ablauf kann äußerst einfach be¬ werkstelligt werden.It proves to be particularly advantageous that the drives and / or drives of both the press bear and the drawing cushion are connected in a slip-free manner via electrical shafts. Electric drives or drives have the significant advantage that they can be connected to one another without slip using electrical connections alone, and they also have the advantage that the drive parameters can be controlled very precisely by the program. This creates the possibility to change the press pressure depending on the press travel during the deep-drawing process, as for the best possible deep-drawing result appears necessary. Such a program-controlled process can be extremely simple ¬ be werkstelligt.
Es ist auch möglich, die Steuerung des Pressendrucks dadurch vorzunehmen, daß man entsprechende Parameter aus Druckelementen auswertet, die zwischen den Antrieben bzw. Abtrieben für das Ziehkissen und dem Pressenunterteil angeordnet sind.It is also possible to control the press pressure by evaluating corresponding parameters from pressure elements which are arranged between the drives or drives for the die cushion and the lower press part.
KURZBESCHREIBUNG DER ZEICHNUNGSABBILDUNGBRIEF DESCRIPTION OF THE DRAWING ILLUSTRATION
Nachstehend wird eine bevorzugte Ausführungsform der Erfin- düng anhand der Zeichnungen näher erläutert. Es zeigen:A preferred embodiment of the invention is explained in more detail below with reference to the drawings. Show it:
Figur 1 - einen Schnitt durch eine TiefZiehpresse in ge¬ öffnetem Zustand gemäß Ebene I - I in Fig. 4; Figur 2 - den Schnitt durch die TiefZiehpresse in ge- schlossenem Zustand entsprechend Fig. 1;Figure 1 - a section through a deep drawing press in ge ¬ opened state according to level I - I in Fig. 4; Figure 2 - the section through the deep drawing press in the closed state according to Fig. 1;
Figur 3 - eine Draufsicht in Blickrichtung gemäß PfeilFigure 3 - a plan view in the direction of arrow
III in Fig. 1; Figur 4 - einen Schnitt gemäß Ebene IV - IV in Fig. 1.III in Fig. 1; Figure 4 - a section along plane IV - IV in Fig. 1st
BESTER WEG ZUR AUSFÜHRUNG DER ERFINDUNGBEST WAY TO CARRY OUT THE INVENTION
Auf einem Fundament 17 ist die Grundplatte la eines Pres¬ senunterteils 1 verankert. Das Pressenunterteil 1 trägt Führungssäulen 3, an denen ein Pressenbär 2 geführt wird. An dem Pressenbär 2 ist eine Ziehmatrize als Werkzeugoberteil 7a festgespannt, die mit einem Werkzeugunterteil 7b zusammenwirkt. Das Werkzeugunterteil 7b ist mit seiner Werkzeuggrundplatte 10 auf dem Pressentisch des Pressenunterteils 1 aufgespannt.On a foundation 17, the base plate la is a Pres ¬ anchored senunterteils. 1 The lower press part 1 carries guide columns 3, on which a press bear 2 is guided. On the press bear 2, a drawing die is clamped as the upper tool part 7a, which with a lower tool part 7b cooperates. The lower tool part 7b is clamped with its tool base plate 10 on the press table of the lower press part 1.
Die Werkzeuggrundplatte 10 ist von Ziehstiften 9 durchsetzt, die einen Ziehring 8 tragen, auf dem ein Ziehblech 11 als Rohling für einen Ziehvorgang bereitliegt. Die Ziehstifte 9 werden in Führungsbohrungen lc des Pressenunterteils 1 geführt und stützen sich auf einem Ziehkissen 12 ab. An dem Ziehkissen 12 sind Spindelmuttern 14 für den Eingriff mit Gewindespindeln 13 befestigt.The tool base plate 10 is penetrated by drawing pins 9, which carry a drawing ring 8 on which a drawing plate 11 is available as a blank for a drawing process. The drawing pins 9 are guided in guide bores 1c of the lower press part 1 and are supported on a drawing cushion 12. Spindle nuts 14 for engagement with threaded spindles 13 are fastened to the die cushion 12.
Die Gewindespindeln 13 werden von je einer aus Winkelgetriebe 15b und Antriebsmotor 15a bestehenden Motor-Winkel- getriebeeinheit 15 angetrieben. Zwischen der Gewindespindel 13 und dem Pressenunterteil 1 bzw. seiner Grundplatte la ist ein Druckmeßelement 16 vorgesehen, nach dessen Signalen der zugehörige Antriebsmotor 15a gesteuert wird. Das Ziehkissen 12, die Motor - Winkelgetriebeeinheiten 15 und die Gewindespindeln 4 sind in einem Aufnahmeraum lb innerhalb des Pressenunterteils 1 angeordnet.The threaded spindles 13 are each driven by an angular gear unit 15 consisting of an angular gear 15b and a drive motor 15a. Between the threaded spindle 13 and the lower press part 1 or its base plate 1 a, a pressure measuring element 16 is provided, according to the signals of which the associated drive motor 15 a is controlled. The die cushion 12, the motor-angle gear units 15 and the threaded spindles 4 are arranged in a receiving space 1b within the lower press part 1.
An dem Pressenunterteil 1 sind außerdem Spindelmuttern 5 undrehbar und unverschieblich befestigt, in die Gewinde- spindein 4 eingreifen, die drehbar im Pressenbär 2 gelagert sind. Auf der Oberseite des Pressenbärs 2 ist für jede Gewindespindel 4 eine Motor-Winkelgetriebeeinheit 6 befestigt, deren Motor 6a mittels des Winkelgetriebes 6b die Gewindespindel 4 antreibt. Die Motoren 6a, die Winkelge- triebe 6b oder die Gewindespindeln 4 können durch eine schlupffreie Verbindung miteinander gekoppelt sein, so daß eine einseitige Krafteinleitung in den Pressenbär 2 beim Schließen des Werkzeugs 7 zu keinem Verkanten des Pressenbärs 2 führen kann. Die Führungssäulen 3 des Pressenbärs 2 bleiben daher von Querkräften weitgehend frei.On the lower press part 1, spindle nuts 5 are also non-rotatably and immovably fastened, into which threaded spindles 4 engage, which are rotatably mounted in the press bar 2. A motor-angular gear unit 6 is attached to the top of the press bar 2 for each threaded spindle 4, whose motor 6a drives the threaded spindle 4 by means of the angular gear 6b. The motors 6a, the angular gear 6b or the threaded spindles 4 can be coupled to one another by a slip-free connection, so that a one-sided introduction of force into the press bar 2 during Closing the tool 7 can not lead to tilting of the press bear 2. The guide columns 3 of the press bear 2 therefore remain largely free of transverse forces.
In dem in Fig. 2 dargestellten, geschlossenen Zustand der TiefZiehpresse haben sich die Gewindespindel 4 durch die Spindelmuttern 5 hindurch nach unten geschraubt und den Pressenbär 2 mit den darauf befestigten Motor-Winkelgetriebeeinheiten 6 abgesenkt. Die Ziehstifte 9 sind von dem Werkzeugoberteil 7a nach unten gedrückt worden. Dadurch ist das Ziehkissen 12 ebenfalls nach unten verschoben, da das Gewinde der Gewindespindeln 13 nicht selbsthemmend ist. Der Widerstand, den das Ziehkissen 12 der Abwärtsbewegung entgegensetzt, wird allein durch die Antriebsmotoren 15a er- zeugt und richtet sich nach der Haltekraft, mit der das Ziehblech zwischen Werkzeugoberteil 7a und Ziehring 8 gespannt werden soll. Die Haltekraft kann durch Änderung des Motordrehmoments leicht den unterschiedlichen Erfordernissen angepaßt werden.In the closed state of the deep drawing press shown in FIG. 2, the threaded spindle 4 has been screwed down through the spindle nuts 5 and the press bar 2 with the motor angular gear units 6 fastened thereon have been lowered. The drawing pins 9 have been pressed down by the upper tool part 7a. As a result, the die cushion 12 is also moved downward, since the thread of the threaded spindles 13 is not self-locking. The resistance that the drawing cushion 12 opposes to the downward movement is generated solely by the drive motors 15a and depends on the holding force with which the drawing plate is to be tensioned between the upper tool part 7a and the drawing ring 8. The holding force can easily be adapted to the different requirements by changing the motor torque.
Die in Durchschnittsgröße neben der TiefZiehpresse schematisch dargestellte Bedienungsperson verdeutlicht, daß das Ziehblech 11 in Schulterhöhe in die TiefZiehpresse eingelegt und aus ihr entnommen werden kann, ohne daß Teile der TiefZiehpresse unter das Niveau des Fundaments verlegt werden müssen. Auch eine Bühne für die Bedienungsperson ist nicht erforderlich.The operator, shown schematically in average size next to the deep-drawing press, clarifies that the drawing plate 11 can be inserted and removed from the deep-drawing press at shoulder height without parts of the deep-drawing press having to be laid below the level of the foundation. A stage for the operator is also not required.
Zur Führung des Pressenbärs 2 sind vier Führungssäulen 3 vorgesehen, wie Fig. 3 zeigt. Neben jeder Führungssäule 3 ist in den Eckbereichen des Pressenbärs 2 eine Gewindespindel 4 angeordnet, die von einer Motor-Winkelgetriebe- einheit 6 gedreht wird. Die Antriebsmotoren 6a sind untereinander durch nicht dargestellte elektrische Wellen verbunden. Hierdurch werden die Aufspannflächen des Pressenbärs 2 exakt parallel zu ihrer Ausgangsstellung geführt.Four guide columns 3 are provided for guiding the press bear 2, as shown in FIG. 3. In addition to each guide column 3, a threaded spindle 4 is arranged in the corner areas of the press bear 2, which is driven by a motor-angular gear unit 6 is rotated. The drive motors 6a are interconnected by electrical shafts, not shown. As a result, the clamping surfaces of the press bear 2 are guided exactly parallel to their starting position.
Auf die gleiche Weise ist das Ziehkissen 12 durch vier in den Eckbereichen des Ziehkissens 12 angeordnete Motor - Winkelgetriebeeinheiten 15, die schlupffrei elektrisch oder mechanisch miteinander verbunden sind, an Kippbewegungen gehindert. Die Draufsicht der Fig. 4 stellt das Werkzeugunterteil 7b ohne Ziehblech 11 dar. Im Pressenunterteil 1 sind über dem Ziehkissen 12 eine Vielzahl von Führungsbohrungen lc vorgesehen, von denen nur einige unter dem Ziehring 8 liegende Führungsbohrungen lc durch Ziehstifte 9 be- legt sind. In the same way, the die cushion 12 is prevented from tilting by four motor angular gear units 15 which are arranged in the corner regions of the die cushion 12 and which are electrically or mechanically connected to one another in a slip-free manner. 4 shows the lower tool part 7b without a drawing plate 11. In the press lower part 1, a plurality of guide bores 1c are provided above the drawing cushion 12, of which only a few guide bores 1c lying under the drawing ring 8 are occupied by drawing pins 9.

Claims

PATENTANSPRÜCHE: PATENT CLAIMS:
1. TiefZiehpresse mit einem Pressenunterteil (1), welches ein Werkzeugunterteil (7b) trägt, mit einem vertikal ent- lang einer Führung verfahrbaren Pressenbär (2), der ein1. Deep drawing press with a lower press part (1), which carries a lower tool part (7b), with a press bar (2) that can be moved vertically along a guide
Werkzeugoberteil (7a) trägt, ferner mit einem unterhalb des Werkzeugunterteils (7b) angeordneten, vertikal in unterschiedliche Richtungen verfahrbaren Ziehkissen (12), dessen Bewegung mittels in Führungsbohrungen (lc) des Pressenun- terteils (1) geführter Ziehstifte (9) auf ein für ein Ziehblech (11) vorgesehenes Auflageelement des Werkzeugunterteils (7b) übertragbar ist, dadurch gekennzeichnet, daß der Antrieb des Pressenbärs (2) mittels zueinander pa- ralleler, vertikaler, sich zwischen Pressenunterteil (1) und Pressenbär (2) erstreckender Gewindespindeln (4) erfolgt, die jeweils mit Spindelmuttern (5) zusammenwirken, wobei die gedrehten Antriebselemente schlupffrei miteinander gekoppelt sind, wobei die Führung des Pressenbärs (2) über vom Pressenunterteil (1) vertikal und parallel zu den Gewindespindeln (4) sich erstreckende, fest mit dem Pressenunterteil (1) verbundene Führungsflächen erfolgt, und daß das Ziehkissen (12) einen elektromotorischen Antrieb bzw. Abtrieb mittels vertikal sich erstreckender Gewinde- spindein (13) und Spindelmuttern (14) aufweist, wobei die gedrehten Antriebs- bzw. Abtriebselemente schlupffrei miteinander gekoppelt sind. The upper tool part (7a) also carries a drawing cushion (12) which is arranged below the lower tool part (7b) and can be moved vertically in different directions, the movement of which is carried out by means of drawing pins (9) guided in guide bores (lc) of the lower press part (1) A support element of the lower tool part (7b) provided for a drawing plate (11) can be transferred, characterized in that the drive of the press bar (2) by means of parallel, vertical threaded spindles (4) extending between the lower press part (1) and press bar (2). takes place, each of which cooperates with spindle nuts (5), the rotated drive elements being coupled with one another in a slip-free manner, the guide of the press bear (2) extending from the press lower part (1) vertically and parallel to the threaded spindles (4) and firmly with the press lower part (1) connected guide surfaces, and that the die cushion (12) is an electric motor drive or output m has vertically extending threaded spindles (13) and spindle nuts (14), the rotated drive and output elements being coupled to one another without slippage.
2. TiefZiehpresse nach Anspruch 1, dadurch gekennzeichnet, daß die Antriebe und/oder Abtriebe über elektrische Wellen verbunden sind.2. Deep drawing press according to claim 1, characterized in that the drives and / or drives are connected via electrical shafts.
3. TiefZiehpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Gewindespindeln (4) für den Antrieb des Pressenbärs (2) jeweils mit Spindelmuttern (5) zusammenwirken, welche fest im Pressenunterteil (1) angeordnet sind.3. Deep drawing press according to claim 1 or 2, characterized in that the threaded spindles (4) for driving the press bear (2) each cooperate with spindle nuts (5) which are fixedly arranged in the lower press part (1).
4. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gewindespindeln (13) für den Antrieb bzw. Abtrieb des Ziehkissens (12) mit Spindelmuttern (14) zusammenwirken, welche fest mit dem Ziehkissen (12) verbunden sind.4. Deep drawing press according to one or more of claims 1 to 3, characterized in that the threaded spindles (13) for driving or stripping the die cushion (12) cooperate with spindle nuts (14) which are firmly connected to the die cushion (12) .
5. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Antriebe elektrische Motor-Winkelgetriebeeinheiten (6; 15) sind.5. deep drawing press according to one or more of claims 1 to 4, characterized in that the drives are electric motor-angular gear units (6; 15).
6. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwischen den Antrieben für das Ziehkissen und dem Pressenunterteil (1) Druckmeßelemente (16) angeordnet sind. 6. Deep drawing press according to one or more of claims 1 to 5, characterized in that between the drives for the die cushion and the lower press part (1) pressure measuring elements (16) are arranged.
7. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Kennwerte der Antriebseinheiten für den Pres- senbär (2) während der Bewegung des Pressenbärs (2) programmgesteuert veränderbar sind.7. Deep drawing press according to one or more of claims 1 to 6, characterized in that the characteristic values of the drive units for the press bar (2) can be changed under program control during the movement of the press bar (2).
8. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Kennwerte der Antriebs- bzw. Abtriebseinheiten des Ziehkissens (12) während der Bewegung des Ziehkissens (12) programmgesteuert veränderbar sind.8. deep drawing press according to one or more of claims 1 to 7, characterized in that the characteristic values of the drive or output units of the die cushion (12) during the movement of the die cushion (12) can be changed under program control.
9. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Kennwerte der Antriebs- bzw. Abtriebseinheiten in Abhängigkeit von aus den Druckmeßeiementen (16) stammenden Signalen veränderbar sind.9. Deep drawing press according to one or more of claims 1 to 8, characterized in that the characteristic values of the drive or output units can be changed as a function of signals originating from the pressure measuring elements (16).
10. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Kennwerte für die Antriebs- bzw. Abtriebseinheiten des Ziehkissens (12) in Abhängigkeit von der Bewegung des Pressenbärs (2) veränderbar sind.10. Deep drawing press according to one or more of claims 1 to 8, characterized in that the characteristic values for the drive or output units of the die cushion (12) can be changed as a function of the movement of the press bear (2).
11. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Führungsflächen an Führungssäulen (3) vorgese- hen sind, die sich von dem Pressenunterteil (1) durch den Pressenbär (2) erstrecken.11. Deep drawing press according to one or more of claims 1 to 10, characterized in that the guide surfaces are provided on guide columns (3). hen that extend from the lower press part (1) through the press bear (2).
12. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Antriebe des Pressenbärs (2) und/oder die Antriebe des Ziehkissens (12) mit den Gewindespindeln (4 bzw. 13) verbunden sind.12. Deep drawing press according to one or more of claims 1 to 11, characterized in that the drives of the press bear (2) and / or the drives of the die cushion (12) are connected to the threaded spindles (4 or 13).
13. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Antriebe des Pressenbärs (2) und/oder die An- triebe des Ziehkissens (12) mit den Spindelmuttern (5 bzw. 14) verbunden sind.13. Deep drawing press according to one or more of claims 1 to 11, characterized in that the drives of the press bear (2) and / or the drives of the die cushion (12) are connected to the spindle nuts (5 or 14).
14. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das Ziehkissen (12) gemeinsamen mit den Antrieben innerhalb eines zentralen, im Pressenunterteil (1) vorgesehenen Aufnahmeraums (lb) angeordnet sind.14. Deep drawing press according to one or more of claims 1 to 13, characterized in that the die cushion (12) are arranged together with the drives within a central receiving space (1b) provided in the lower press part (1).
15. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß das Auflageelement für das Ziehblech (11) von einem15. Deep drawing press according to one or more of claims 1 to 14, characterized in that the support element for the drawing plate (11) by one
Ziehring (8) gebildet ist.Drawing ring (8) is formed.
16. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Gewinde zwischen Gewindespindel (13) und Gewindemutter (14) für den Antrieb bzw. Abtrieb des Ziehkissens (12) nicht selbsthemmend ausgebildet sind.16. deep drawing press according to one or more of claims 1 to 15, characterized in that the threads between the threaded spindle (13) and the threaded nut (14) for driving or stripping the die cushion (12) are not designed to be self-locking.
17. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die Gewindespindeln (13) des Antriebs bez. Abtriebs des Ziehkissens (12) in den vier Eckbereichen des im17. Deep drawing press according to one or more of claims 1 to 16, characterized in that the threaded spindles (13) of the drive. Output of the die cushion (12) in the four corner areas of the
Grundriß rechteckigen Ziehkissens (12) angeordnet sind.Floor plan rectangular die cushion (12) are arranged.
18. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Gewindespindeln (4) des Antriebs für den Pressenbär (2) in den vier Eckbereichen des im Grundriß rechteckigen Pressenbärs (2) angeordnet sind.18. Deep drawing press according to one or more of claims 1 to 17, characterized in that the threaded spindles (4) of the drive for the press bear (2) are arranged in the four corner regions of the press bear (2) which is rectangular in plan.
19. TiefZiehpresse nach einem oder mehreren der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß die Antriebe des Pressenbärs (2) lageunveränderlich auf dem Pressenbär (2) befestigt sind. 19. Deep drawing press according to one or more of claims 1 to 18, characterized in that the drives of the press bear (2) are fixed in a fixed position on the press bear (2).
EP99922131A 1998-05-12 1999-04-27 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts Expired - Lifetime EP1082185B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19821159A DE19821159A1 (en) 1998-05-12 1998-05-12 Deep draw press
DE19821159 1998-05-12
PCT/EP1999/002817 WO1999058265A1 (en) 1998-05-12 1999-04-27 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts

Publications (2)

Publication Number Publication Date
EP1082185A1 true EP1082185A1 (en) 2001-03-14
EP1082185B1 EP1082185B1 (en) 2002-03-27

Family

ID=7867473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99922131A Expired - Lifetime EP1082185B1 (en) 1998-05-12 1999-04-27 A deep drawing press with a ram hammer and drawing cushion driven by threaded spindles and spindle nuts

Country Status (4)

Country Link
EP (1) EP1082185B1 (en)
AT (1) ATE214982T1 (en)
DE (2) DE19821159A1 (en)
WO (1) WO1999058265A1 (en)

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DE102008034971A1 (en) 2008-07-25 2010-01-28 Müller Weingarten AG Drive system of a forming press
DE202018002280U1 (en) 2018-05-04 2019-08-06 Hypneu Gmbh Hydraulik Und Pneumatik Hydraulic circuit for keeping parallel at least two hydraulic cylinders on a lightweight press

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ES2331277A1 (en) * 2005-03-07 2009-12-28 Muller Weingarten Ag Die cushion device having a numerically controlled drive and a hydraulic pad
DE102008034971A1 (en) 2008-07-25 2010-01-28 Müller Weingarten AG Drive system of a forming press
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DE202018002280U1 (en) 2018-05-04 2019-08-06 Hypneu Gmbh Hydraulik Und Pneumatik Hydraulic circuit for keeping parallel at least two hydraulic cylinders on a lightweight press

Also Published As

Publication number Publication date
WO1999058265A1 (en) 1999-11-18
DE59901068D1 (en) 2002-05-02
EP1082185B1 (en) 2002-03-27
ATE214982T1 (en) 2002-04-15
DE19821159A1 (en) 1999-11-25

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