EP2193912A2 - Screw press - Google Patents
Screw press Download PDFInfo
- Publication number
- EP2193912A2 EP2193912A2 EP09014962A EP09014962A EP2193912A2 EP 2193912 A2 EP2193912 A2 EP 2193912A2 EP 09014962 A EP09014962 A EP 09014962A EP 09014962 A EP09014962 A EP 09014962A EP 2193912 A2 EP2193912 A2 EP 2193912A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- press
- spindle
- electric motor
- spindle nut
- 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.)
- Withdrawn
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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
- B30B1/181—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 the screw being directly driven by an electric motor
Definitions
- the invention relates to a screw press according to the preamble of claim 1, consisting of a press table, a Pressenbär and a plurality of screw drives for driving the Pressenbärs.
- Each of the screw drives comprises a threaded spindle, a spindle nut and an electric motor.
- Such a screw press is from the DE 198 21 159 A1 known.
- the Pressenbär this screw press is driven by four each arranged in the corners of the press table or Pressenbärs screw drives in the vertical direction.
- the threaded spindle of the screw drives are rotatably mounted in Pressenbär and are each driven by a motor-angle gear unit. They engage in spindle nuts, which are attached non-rotatably and immovably to the press table.
- the screw drives are not mechanically coupled to each other, the synchronous operation of the screw drives is ensured by the control of the motors.
- Parallel to the screw drives a guide column for guiding the Pressenbärs is additionally arranged in each corner of the press table.
- the need for the additional guide columns proves to be particularly disadvantageous for two reasons.
- On the one hand is limited by the guide columns the available surface for mounting tools on the surface of the press table or the underside of the Pressenbärs.
- the size of the components to be machined is thus limited by the presence of the additional guide columns in comparison to the external dimensions of the screw press.
- the production of known from the prior art screw presses proves to be expensive and expensive.
- An essential aspect is the high number of components.
- Object of the present invention is therefore to provide a construction for a screw press, by which the production cost is reduced in the first place.
- the disadvantages of the known from the prior art screw presses are to be overcome.
- the screw press according to the invention comprises four screw drives, which are each arranged in the corners of the press table or the Pressenbärs. This allows the force to be evenly distributed during the pressing process. Also, by a suitable control of the motors a uniform feed can be ensured, whereby tilting of the Pressenbärs is excluded.
- screw drives which are each arranged in the corners of the press table or the Pressenbärs.
- the guide surface of the threaded spindle is preferably formed by a smooth cylindrical portion, so that this guide cylinder is concentric with the threaded portion of the threaded spindle.
- the threaded spindle can thus be manufactured in a simple manner from a cylindrical strand.
- the thread of the threaded part can both be rolled and cut, the machining of the guide surface is made by a turning and possibly subsequent machining on a precision grinding machine.
- Pressenbär On the opposite side of the Pressenbär preferably comprises on the underside per screw each a guide bushing. This has the advantage that the guide bushes can be adjusted or readjusted in contrast to directly drilled guide holes.
- the bearing of the spindle nut in Pressenbär comprises an upper main bearing and a lower counter bearing.
- the main bearing serves to absorb the forces occurring during the pressing process, wherein the counter-bearing receives the weight of the Pressenbärs.
- the anvil is thus relieved during the pressing process.
- a certain minimum preload on the abutment is effected by springs.
- the electric motor and spindle nut are not firmly connected to each other, but coupled by a toothed coupling. While the toothed coupling transmits the rotational movement of the electric motor unrestricted, it allows a relative movement between the electric motor and the spindle nut in the axial direction. This prevents the axial forces occurring during the pressing process from being transmitted from the spindle nuts to the motors.
- the screw drives are preferably oil lubricated.
- the oil lubrication system used for this purpose includes oil cooling.
- FIG. 1 a spindle press 1 according to the invention with a press table 2 and a Pressenbär 3 is shown.
- Press table 2 and Pressenbär 3 are connected via four screw drives 4, 5, 6, 7, which are arranged in the corners of the press table 1.
- screw drives 4, 5, 6, 7, which are arranged in the corners of the press table 1.
- FIG. 2 shows a side sectional view AA of the screw press according to the invention FIG. 1 ,
- the illustrated section AA runs through the axes of the screw drives 5 and 7.
- the threaded spindle 8 is rotationally fixed to the press table. 2 connected.
- the operation of Pressenbärs 3 via the rotation of the spindle nut 9, which is rotatably mounted and axially immovable in Pressenbär 3.
- the spindle nut 9 is driven by the electric motor 10.
- the Pressenbär 3 is shown in its moved down position.
- the threaded spindle 8 immersed in the downward movement of the Pressenbärs 3 in the designed as a hollow shaft motor electric motor 10 a.
- FIG. 3 is the cut screw 7 off FIG. 2 shown enlarged.
- the structure of the screw drives 4, 5, 6 and 7 will be explained below only by way of example with reference to the screw 7, the remaining screw drives 4, 5 and 6 correspond in their construction completely to that of the screw 7.
- the upper threaded portion 11 of the threaded spindle 8 is connected to the Spindle nut 9 engaged.
- the lower part of the threaded spindle 8 serves as a guide surface 12 for guiding the Pressenbärs 3.
- the guide surface 12 is formed by a smooth cylindrical portion whose axis is coaxial with the axis of the threaded portion 11.
- the Pressenbär 3 slides with the guide bush 14 on the guide surface 12 of the threaded spindle 8.
- the guide bush 14 is connected via a guide flange 13 with the Pressenbär at its bottom.
- a bearing flange 15 is fixedly connected to the Pressenbär 3.
- the bearing consists of the main bearing 16 and the thrust bearing 17.
- the main bearing 16 the forming forces are absorbed, which arise during the pressing process.
- the smaller abutment 17 carries between the press trains only the weight of Pressenbärs 3. It is relieved during the pressing process by the forming forces.
- a plurality of springs 18 are arranged in corresponding recesses of the Lüflansches.
- the desired preload force is adjusted with the nut 19.
- the drive of the spindle nut 9 is carried out by a designed as a hollow shaft motor electric motor 10, which is arranged on the surface of Pressenbär 3 and firmly connected thereto.
- Electric motor 10 and spindle nut 9 are not firmly connected, but coupled together via a toothed coupling 21.
- the task of the toothed coupling 21 is to transmit the rotational movement of the electric motor 10 without play to the spindle nut 9.
- the toothed coupling 21 prevents axial forces, which occur during the pressing process, from the spindle nut 9 on the electric motor 10 are transmitted.
- an externally toothed hollow shaft 22 is fixedly connected to the rotor of the electric motor 10, which is engaged with internally toothed and firmly connected to the spindle nut 9 discs 23 and 24 in engagement.
- Backlash between externally toothed hollow shaft 22 and internally toothed discs 23 and 24 is achieved by the rotation of the internally toothed discs 23 and 24 to each other.
- the internally toothed disks 23 and 24 are adjusted in such a way that in one direction of rotation the tooth flanks of the disk 23 and in the other direction of rotation bear the tooth flanks of the disk 24 against the tooth flanks of the hollow shaft 22.
- the lead screws are lubricated by an oil lubrication system, not shown, with oil cooling.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Die Erfindung betrifft eine Spindelpresse nach dem Oberbegriff des Anspruchs 1, bestehend aus einem Pressentisch, einem Pressenbär und mehreren Gewindetrieben zum Antrieb des Pressenbärs. Jeder der Gewindetriebe umfasst dabei eine Gewindespindel, eine Spindelmutter und einen Elektromotor.The invention relates to a screw press according to the preamble of
Eine derartige Spindelpresse ist aus der
Die Notwendigkeit der zusätzlichen Führungssäulen erweist sich aus zwei Gründen als besonders nachteilig. Zum Einen wird durch die Führungssäulen die zur Verfügung stehende Fläche zur Befestigung von Werkzeugen auf der Oberfläche des Pressentischs bzw. der Unterseite des Pressenbärs eingeschränkt. Die Größe der zu bearbeitenden Bauteile wird somit durch das Vorhandensein der zusätzlichen Führungssäulen im Vergleich zu den Außenabmaßen der Spindelpresse limitiert. Zum Anderen erweist sich die Fertigung der aus dem Stand der Technik bekannten Spindelpressen als aufwendig und teuer. Ein wesentlicher Aspekt ist dabei die hohe Anzahl an Bauteilen.The need for the additional guide columns proves to be particularly disadvantageous for two reasons. On the one hand is limited by the guide columns the available surface for mounting tools on the surface of the press table or the underside of the Pressenbärs. The size of the components to be machined is thus limited by the presence of the additional guide columns in comparison to the external dimensions of the screw press. On the other hand, the production of known from the prior art screw presses proves to be expensive and expensive. An essential aspect is the high number of components.
Aufgabe der vorliegenden Erfindung ist es deshalb, eine Konstruktion für eine Spindelpresse anzugeben, durch welche in erster Linie der Fertigungsaufwand reduziert wird. Zudem sollen die Nachteile der aus dem Stand der Technik bekannten Spindelpressen überwunden werden.Object of the present invention is therefore to provide a construction for a screw press, by which the production cost is reduced in the first place. In addition, the disadvantages of the known from the prior art screw presses are to be overcome.
Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1. Demnach liegt eine gattungsgemäße Lösung der Aufgabe vor, wenn die Führung des Pressenbärs durch die Gewindespindeln selbst bewerkstelligt wird. Die Gewindespindel jedes der verwendeten Gewindetriebe ist dazu drehfest mit dem Pressentisch verbunden und weist in einem unteren Bereich eine Führungsfläche zur Führung des Pressenbärs auf. Im oberen Bereich hingegen schließt sich ein Gewindeteil an, der mit der im Pressenbär drehbar gelagerten und durch den Elektromotor getriebenen Spindelmutter in Eingriff steht. Dabei ist der als Hohlwellenmotor ausgeführte Elektromotor koaxial zu Spindelmutter und Gewindespindel angeordnet und auf dem Pressenbär montiert. Durch diese Anordnung entfallen zusätzliche Führungssäulen, wodurch entweder die Außenabmessungen der Spindelpresse verringert oder aber auch größere Bauteile bei im Vergleich zum Stand der Technik gleichbleibenden Spindelabmessungen bearbeitet werden können.The object is achieved by the features of
Weitere Ausgestaltungen der vorliegenden Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the present invention are the subject of the dependent claims.
In einer bevorzugten Ausführungsform umfasst die erfindungsgemäße Spindelpresse vier Gewindetriebe, die jeweils in den Ecken des Pressentischs bzw. des Pressenbärs angeordnet sind. So lässt sich die Kraft beim Pressvorgang gleichmäßig verteilen. Auch kann durch geeignete Steuerung der Motoren ein einheitlicher Vorschub gewährleistet werden, wodurch ein Verkanten des Pressenbärs ausgeschlossen wird. Es sind auch eine Ausführung mit zwei Gewindetrieben sowie Ausführungen großer Spindelpressen mit mehreren Gewindetrieben denkbar.In a preferred embodiment, the screw press according to the invention comprises four screw drives, which are each arranged in the corners of the press table or the Pressenbärs. This allows the force to be evenly distributed during the pressing process. Also, by a suitable control of the motors a uniform feed can be ensured, whereby tilting of the Pressenbärs is excluded. There are also a version with two screw drives and designs of large screw presses with multiple screw conceivable.
Die Führungsfläche der Gewindespindel wird vorzugsweise durch einen glatten zylindrischen Abschnitt gebildet, so dass dieser Führungszylinder konzentrisch zum Gewindeteil der Gewindespindel verläuft. Die Gewindespindel kann somit auf einfache Art und Weise aus einem zylindrischen Strang gefertigt werden. Das Gewinde des Gewindeteils kann dabei sowohl gewalzt als auch geschnitten werden, die Bearbeitung der Führungsfläche erfolgt durch eine Drehbearbeitung sowie eine eventuell daran anschließende Bearbeitung auf einer Präzisionsschleifmaschine.The guide surface of the threaded spindle is preferably formed by a smooth cylindrical portion, so that this guide cylinder is concentric with the threaded portion of the threaded spindle. The threaded spindle can thus be manufactured in a simple manner from a cylindrical strand. The thread of the threaded part can both be rolled and cut, the machining of the guide surface is made by a turning and possibly subsequent machining on a precision grinding machine.
Auf der Gegenseite umfasst der Pressenbär vorzugsweise auf der Unterseite pro Gewindetrieb jeweils eine Führungsbuchse. Dies hat den Vorteil, dass die Führungsbuchsen im Gegensatz zu direkt gebohrten Führungslöchern justiert bzw. nachjustiert werden können.On the opposite side of the Pressenbär preferably comprises on the underside per screw each a guide bushing. This has the advantage that the guide bushes can be adjusted or readjusted in contrast to directly drilled guide holes.
In einer weiteren bevorzugten Ausführungsform umfasst die Lagerung der Spindelmutter im Pressenbär ein oberes Hauptlager sowie ein unteres Gegenlager. Das Hauptlager dient zur Aufnahme der auftretenden Kräfte während des Pressvorgangs, wobei das Gegenlager die Gewichtskraft des Pressenbärs aufnimmt. Das Gegenlager wird somit während des Pressvorgangs entlastet. Eine gewisse Mindestvorspannung am Gegenlager wird durch Federn bewirkt.In a further preferred embodiment, the bearing of the spindle nut in Pressenbär comprises an upper main bearing and a lower counter bearing. The main bearing serves to absorb the forces occurring during the pressing process, wherein the counter-bearing receives the weight of the Pressenbärs. The anvil is thus relieved during the pressing process. A certain minimum preload on the abutment is effected by springs.
In einer weiteren bevorzugten Ausführungsform sind Elektromotor und Spindelmutter nicht fest miteinander verbunden, sondern durch eine Zahnkupplung gekoppelt. Während die Zahnkupplung die Drehbewegung des Elektromotors uneingeschränkt überträgt, erlaubt sie in axialer Richtung einer Relativbewegung zwischen Elektromotor und Spindelmutter. Dadurch wird verhindert, dass die beim Pressvorgang auftretenden Axialkräfte von den Spindelmuttern auf die Motoren übertragen werden.In a further preferred embodiment, the electric motor and spindle nut are not firmly connected to each other, but coupled by a toothed coupling. While the toothed coupling transmits the rotational movement of the electric motor unrestricted, it allows a relative movement between the electric motor and the spindle nut in the axial direction. This prevents the axial forces occurring during the pressing process from being transmitted from the spindle nuts to the motors.
Die Gewindetriebe sind vorzugsweise ölgeschmiert. Um eine hohe Einsatzdauer und kurze Presszyklen zu gewährleisten, umfasst das dazu verwendet Ölschmiersystem eine Ölkühlung.The screw drives are preferably oil lubricated. To ensure a long service life and short pressing cycles, the oil lubrication system used for this purpose includes oil cooling.
Ein bevorzugtes Ausführungsbeispiel der vorliegenden Erfindung wird im Folgenden anhand von Zeichnungen näher beschrieben. Es zeigen:
Figur 1- eine Frontansicht einer erfindungsgemäßen Spindelpresse mit nach oben verfahrenem Pressenbär,
Figur 2- eine geschnittene Seitenansicht der erfindungsgemäßen Spindelpresse aus
, wobei der Pressenbär links im nach oben verfahrenen und rechts im nach unten verfahrenen Zustand dargestellt ist, undFigur 1 Figur 3- eine Detailansicht des rechten Gewindetriebs aus
.Figur 2
- FIG. 1
- a front view of a screw press according to the invention with upwardly moved Pressenbär,
- FIG. 2
- a sectional side view of the screw press of the invention
FIG. 1 , where the Pressenbär is shown on the left in the upwardly moved and the right in the downwardly moved state, and - FIG. 3
- a detailed view of the right-hand screw drive
FIG. 2 ,
Für die gesamte weitere Beschreibung gilt: Sind in einer Figur zum Zweck zeichnerischer Eindeutigkeit Bezugsziffern enthalten, aber im zugehörigen Beschreibungstext nicht erläutert, so wird auf deren Erwähnung in vorangehenden Figurenbeschreibungen Bezug genommen.The following applies to the entire further description: If reference numerals are contained in a figure for the purpose of graphic uniqueness, but are not explained in the associated descriptive text, reference is made to their mention in the preceding description of the figures.
In
In
Die Gewindetriebe werden durch ein nicht dargestelltes Ölschmiersystem mit Ölkühlung geschmiert.The lead screws are lubricated by an oil lubrication system, not shown, with oil cooling.
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810060043 DE102008060043B3 (en) | 2008-12-02 | 2008-12-02 | screw press |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2193912A2 true EP2193912A2 (en) | 2010-06-09 |
EP2193912A3 EP2193912A3 (en) | 2013-05-29 |
Family
ID=41491550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09014962.6A Withdrawn EP2193912A3 (en) | 2008-12-02 | 2009-12-02 | Screw press |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2193912A3 (en) |
DE (1) | DE102008060043B3 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102145546A (en) * | 2011-04-27 | 2011-08-10 | 山东理工大学 | Direct drive screw press |
EP2636518A3 (en) * | 2012-03-06 | 2013-10-02 | Stratos Gmbh Christoph Staroske | Device for the chipless shaping/forming of a planar workpiece |
CN103895244A (en) * | 2014-03-03 | 2014-07-02 | 淄博奥瑞科机电科技有限公司 | Spline transmission screw press |
CN103418724B (en) * | 2012-05-14 | 2016-08-03 | 青岛平安锻压机械制造有限公司 | Twin screw electric screw press |
CN110768429A (en) * | 2019-10-25 | 2020-02-07 | 上海品星防爆电机有限公司 | Mounting structure and method of motor for electric screw press |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013226754A1 (en) * | 2013-12-19 | 2015-06-25 | Aktiebolaget Skf | Lifting column |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06170589A (en) | 1992-07-30 | 1994-06-21 | M Tex Matsumura Kk | Motor-driven press device |
DE19821159A1 (en) | 1998-05-12 | 1999-11-25 | Johannes Huelshorst | Deep draw press |
DE20305789U1 (en) | 2003-04-10 | 2003-06-26 | Dr. Staiger Mohilo + Co. GmbH, 73547 Lorch | Joining tool has spindle drive to convert rotational into linear motion of the tool and the spindle is enclosed in a hollow shaft motor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE434925B (en) * | 1980-05-06 | 1984-08-27 | Inst Verkstadstek Forsk Ivf | PILLAR MOUNTED PROCESSING UNIT |
DE102005035920A1 (en) * | 2004-07-30 | 2006-03-23 | Fritz Brinkmann | Press for treatment of workpieces has pressing temple, one pressing table and columns whereby one tool is arranged at pressing temple and table and one force-producing device is arranged at pressing temple |
DE102004054836B4 (en) * | 2004-11-12 | 2009-10-01 | Kosan, Ralf, Dr. | Electric pressing device |
JP5179772B2 (en) * | 2007-04-12 | 2013-04-10 | 株式会社放電精密加工研究所 | Press machine |
-
2008
- 2008-12-02 DE DE200810060043 patent/DE102008060043B3/en not_active Expired - Fee Related
-
2009
- 2009-12-02 EP EP09014962.6A patent/EP2193912A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06170589A (en) | 1992-07-30 | 1994-06-21 | M Tex Matsumura Kk | Motor-driven press device |
DE19821159A1 (en) | 1998-05-12 | 1999-11-25 | Johannes Huelshorst | Deep draw press |
DE20305789U1 (en) | 2003-04-10 | 2003-06-26 | Dr. Staiger Mohilo + Co. GmbH, 73547 Lorch | Joining tool has spindle drive to convert rotational into linear motion of the tool and the spindle is enclosed in a hollow shaft motor |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102145546A (en) * | 2011-04-27 | 2011-08-10 | 山东理工大学 | Direct drive screw press |
CN102145546B (en) * | 2011-04-27 | 2013-06-12 | 山东理工大学 | Direct drive screw press |
EP2636518A3 (en) * | 2012-03-06 | 2013-10-02 | Stratos Gmbh Christoph Staroske | Device for the chipless shaping/forming of a planar workpiece |
CN103418724B (en) * | 2012-05-14 | 2016-08-03 | 青岛平安锻压机械制造有限公司 | Twin screw electric screw press |
CN103895244A (en) * | 2014-03-03 | 2014-07-02 | 淄博奥瑞科机电科技有限公司 | Spline transmission screw press |
CN103895244B (en) * | 2014-03-03 | 2016-02-17 | 淄博奥瑞科机电科技有限公司 | Spline-transmission screw press |
CN110768429A (en) * | 2019-10-25 | 2020-02-07 | 上海品星防爆电机有限公司 | Mounting structure and method of motor for electric screw press |
Also Published As
Publication number | Publication date |
---|---|
DE102008060043B3 (en) | 2010-07-29 |
EP2193912A3 (en) | 2013-05-29 |
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