EP3061538B1 - Press brake - Google Patents
Press brake Download PDFInfo
- Publication number
- EP3061538B1 EP3061538B1 EP16151210.8A EP16151210A EP3061538B1 EP 3061538 B1 EP3061538 B1 EP 3061538B1 EP 16151210 A EP16151210 A EP 16151210A EP 3061538 B1 EP3061538 B1 EP 3061538B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press brake
- side part
- press
- bolt
- joint
- 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.)
- Active
Links
- 238000005452 bending Methods 0.000 description 25
- 238000003825 pressing Methods 0.000 description 24
- 230000008901 benefit Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
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- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
Definitions
- the invention relates to a press brake, as indicated in claim 1.
- the WO 2014/085840 A1 discloses a press brake comprising a machine frame, a fixed press table connected thereto, a press beam adjustably mounted on a guide on the machine frame in a straight line to the press table, and at least one drive means engaging the press beam and the machine frame.
- the machine frame comprises at least two uprights, in particular flat C-stands or O-stands arranged transversely to a bending plane extending from the press table to the pressing beam, and a connecting support connecting two adjacent stands.
- at least one longitudinal section of the connection carrier or in at least one longitudinal section, a predominant portion of the carrier cross-section forming part of the connecting member is formed by the drive means and this releasably connected to a support base body of the connection carrier.
- the object of the invention is to provide a press brake, which works as accurately as possible and achieves the most uniform possible result of the bend.
- the cross member is pivotally coupled by means of a first joint with the first side part and coupled by means of a second joint hinged to the second side part.
- the advantage here is that the cross member is pivotally connected to the side panels.
- no bending moments are introduced into the side parts by the cross member.
- the side parts are thereby only loaded by a tensile force, whereby they deform less than a load by a bending moment.
- This can be achieved that the working accuracy of the press brake is increased because this is only slightly deformed under load, in particular when performing a bending operation.
- the longevity of the press brake can be increased, thereby counteracting the reduction of a swelling bending load of any occurring material fatigue.
- first and the second joint are each formed by a bolt connection.
- a bolt connection is simple and inexpensive to manufacture.
- various types of bolt connections are easy to perform, and calculation of such bolt connection is easily possible.
- Another advantage of a bolted connection is that it allows the side parts to be easily assembled with the cross member, or that it is possible in the event of maintenance to remove the cross member from the base frame of the press brake and thus to provide simplified maintenance of the press brake.
- the two side parts are each formed in the region of the bolt connection as a rod and that the cross member is formed in the region of the bolt connection as a fork, which cooperates with a respective rod of a side part.
- the cross member in its end region in which the bolt connection is made, by the formation of a fork can have an increased bending stiffness. This results from the fact that with a fork the force introduction is divided on two points.
- the side part, however, which is designed as a rod needs to absorb only a tensile force in the region of the bolt connection, whereby it is possible to form this area as simple and weight-saving.
- a central bolt receiving element is arranged, in which a bolt of the bolt connection is inserted.
- the advantage here is that such a central pin receiving element by means of mechanical manufacturing is easy to manufacture.
- an inner fit for receiving the bolt in a middle bolt receiving element can be made very well, so that a highly accurate and low-backlash bolt connection can be realized.
- the middle bolt receiving member can be well positioned on one of the side members and connected to it, for example by means of a welded joint, to provide a high-precision press brake.
- the middle bolt receiving element is arranged centrally with respect to the thickness of the side part. It can thereby be achieved that when applying a tensile force on the side part by means of the central bolt receiving element, the tensile force is introduced centrally into the side part. As a result, a bending moment is not introduced into the side part by the tensile force.
- first and the second joint are formed such that a hinge axis is arranged in the horizontal direction perpendicular to the Abkantpressenlnatures.
- the advantage here is that seen in the longitudinal direction, a deflection of the cross member of the two joints can be collected so that there is no deformation of the side parts due to the deflection of the cross member.
- the rod and / or the fork are designed to be divisible in the center of the hinge axis. This can be achieved that the ease of maintenance or assembly is facilitated.
- the two side parts are formed as O-frame, wherein in each case a recess is provided centrally of a side part.
- the two side parts are formed as C-frame, wherein they have an open in one side C-shaped structure.
- the advantage here is that a C-frame is open to one side, which can be achieved that the press brake in the region of the punch is not limited by the two side parts, whereby the flexible use of such a trained press brake can be increased.
- the cross member is formed by two carrier elements, which are positioned at a distance from each other, wherein the at least one actuator is arranged between the two carrier elements.
- the actuators can be arranged symmetrically on the cross member for movement of the adjustable press beam. As a result, no torsional moment is introduced into the cross member by the actuators.
- a fork for the bolt connection can be formed very well by means of the two support elements.
- Fig. 1 shows a schematic front view of a press brake.
- Fig. 2 shows a side view of an embodiment of the press brake 1.
- the structure of the press brake 1 based on an overview of Fig. 1 and Fig. 2 explained.
- the press brake 1 comprises a machine frame 2 in which a fixed pressing beam 3 and an adjustable pressing beam 4 are arranged.
- the adjustable pressing beam 4 is mounted in a vertical pressing direction 5 adjustable on the machine frame 2 and thus movable relative to the fixed pressing beam 3.
- the movement of the adjustable press bar 4 is effected by actuators 6, which connect this to the machine frame 2.
- the fixed pressing beam 3 is preferably coupled directly to the machine frame and thus not adjustable.
- the two pressing bars 3, 4 preferably have a tool holder 7, in which one or more bending tools 8 can be accommodated.
- the bending tools 8 can be formed here as a bending punch or as a bending die.
- a bending edge can be generated in the sheet metal workpiece 9 to be bent. In this case, the bending edge extends in the press brake longitudinal direction 10.
- the press beams 3, 4 have their greatest longitudinal extent in the press brake longitudinal direction 10.
- the machine frame 2 comprises a base plate 11, which constitutes the base of the press brake 1.
- the base plate 11 is used to attach the press brake 1 on the ground, such as a hall floor.
- the machine frame 2 comprises a first side part 12 and a second side part 13, which are coupled to the base plate 11.
- the two side parts 12, 13 extending from the base plate 11, starting in the vertical direction upwards. How out Fig. 1 can be seen, it is provided that the two side parts 12, 13 are arranged at opposite ends of the base plate 11. In particular, the two side parts 12, 13 in Abkantpressenlnature 10 as seen at opposite ends.
- various mechanisms may be provided for coupling the two side parts 12, 13 to the base plate 11.
- various mechanisms may be provided for coupling the two side parts 12, 13 to the base plate 11.
- the two side parts 12, 13 are connected by a welded connection to the base plate 11.
- the two side parts 12, 13 are connected by a screw connection to the base plate 11.
- the fixed pressing beam 3 is also connected to the base plate 11.
- the fixed pressing beam 3 rests on the base plate 11.
- the fixed pressing beam 3 seen in Abkantpressenlvonsraum 10 is frontally connected at a first end portion 14 with the first side part 12 and at a second end portion 15 with the second side part 13. This can contribute to the fact that the two side parts 12, 13 are additionally stabilized.
- the machine frame 2 further comprises a cross member 16 to which the actuator 6 is attached or received.
- the cross member 16 is coupled by means of a first joint 17 articulated to the first side part 12 and coupled by means of a second joint 18 hingedly connected to the second side part 13.
- the two joints 17, 18 are each designed as a bolt connection 19, wherein in each case a bolt 20 is used to connect the items.
- the two side parts 12, 13 are each formed in the region of the bolt connection 19 as a rod 21 and that the cross member 16 is formed in each case as a fork 22.
- the bolt connection 19 in the form of rod 21 and fork 22 is characterized in that the fork 22 has a first bolt receiving element 23 and a second bolt receiving element 24 which are arranged on both sides of a central bolt receiving element 25 of the rod 21.
- the individual pin receiving elements 23, 24, 25 may be formed, for example in the form of sleeves, which are constructed rotationally symmetrical and centrally have a through hole for receiving the bolt 20.
- the sleeves can in this case by a schanradedes Process, such as machining on a lathe, are produced. Sockets produced in this way can be welded to one of the two side parts 12, 13 or to the cross member 16 in the production process for producing the press brake 1. Such a welded connection can be realized for example by a laser welding connection.
- the bolt connection 19 is designed such that the cross member 16 is formed as a rod and that the two side parts 12, 13 are formed as a fork.
- the middle bolt receiving element 25 is arranged centrally with respect to the thickness 26 of the side part 12, 13. This has the advantage that when applying a tensile force on one of the side parts 12, 13, no bending moment is introduced into the side parts 12, 13, since these are only loaded by a tensile force which acts centrally on the side parts 12, 13.
- a hinge axis 27 which extends centrally of the bolt 20 of the bolt connection 19, is aligned parallel to the Abkantpressenlteilsraum 10.
- the cross member 16 has a first support member 28 and a second support member 29, which are positioned at a distance 30 to each other.
- the two support elements 28, 29 can be held by one or more connecting struts 31 to each other at a distance, so as to form a stable cross member 16 in itself.
- the two actuators 6 between these two support members 28, 29 are arranged and coupled thereto to hold the adjustable pressing beam 4 in its position.
- the connection of the actuators 6 to the cross member 16 may be carried out by means of a screw or welded connection.
- the actuators 6 are also coupled by an articulated connection with the cross member 16.
- a guide assembly 32 is formed, which serves to guide the adjustable press bar 4. It can thereby be achieved that the adjustable pressing beam 4 has increased stability and the actuators 6 thus serve only as pressure or tension elements and do not have to take over the guidance of the adjustable pressing beam 4.
- the two side parts 12, 13 are formed as O-frame.
- An embodiment as an O-frame is characterized in that the side parts 12, 13 have a recess 33.
- the recess 33 can serve to provide sufficient space for receiving a sheet metal workpiece 9 can.
- FIG. 3 is a further and possibly independent embodiment of the press brake 1 is shown, again for like parts, the same reference numerals or component names as in the preceding FIGS. 1 and 2 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used FIGS. 1 and 2 referred or referred.
- the two side parts 12, 13 designed as a C-shaped frame.
- This has the advantage that over-wide sheet metal workpieces 9 can be inserted from a machine front side 34 into the press brake 1 and accommodated therein.
- the connection of such a C-shaped side part 12, 13 to the cross member 16 may also as in the in Fig. 2 illustrated embodiment can be implemented.
- FIG. 4 is a further and possibly independent embodiment of the press brake 1 is shown, again for like parts, the same reference numerals or component names as in the preceding FIGS. 1 to 3 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used FIGS. 1 to 3 referred or referred.
- Fig. 4 shows the side view of an embodiment of the side part 12, 13, wherein the bolt receiving member 23, 24 is executed divided in this embodiment.
- a bearing cap 35 is formed, which is connected by means of fastening means 36 on the side part 12, 13.
- the bearing cap 35 and the side part 12, 13 are in each case partially formed as a half-shell, wherein in the assembled state of bearing cap 35 and side part 12, 13, a cylindrical recess for receiving the bolt 20 is formed.
- Fig. 5 shows a highly schematically simplified representation of a front view of a conventional press brake 1 in which the two side parts 12, 13 are fixedly connected to the cross member 16. How out Fig. 5 can be seen, results from the action of pressing forces 37, which are transmitted by the actuators 6 on the cross member 16, a deformation of the cross member 16. Is the cross member 16, as in Fig. 5 shown, rigidly connected to the two side walls 12, 13, a bending moment in the side parts 12, 13 is introduced via this connection. This bending moment causes the side parts 12, 13 to deform in accordance with the introduced bending moment. This can lead to an increased inaccuracy of the press brake 1.
- Fig. 6 is as well as in Fig. 5 the press brake is shown greatly simplified schematically, in which case the two side parts 12, 13 are coupled by means of a first joint 17 and a second joint 18 with the cross member 16.
- Fig. 6 it can be seen, due to the deformation of the cross member 16 due to the pressing force 37 no bending moment in the side parts 12, 13 is introduced, whereby they are not deformed during the bending process. Overall, this results in that an achievable accuracy of the bending press can be increased.
- FIGS. 1 to 6 a further and possibly independent embodiment of the connection of the cross member 16 to the side parts 12, 13 is shown, again for like parts, the same reference numerals or component names as in the preceding FIGS. 1 to 6 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used FIGS. 1 to 6 referred or referred.
- Fig. 7 shows a cross section through the cross member 16, wherein it can be seen in this figure that can be provided that instead of the first joint 17, a first elastically deformable member 38 and instead of the second joint 18, a second elastically deformable member 39 may be formed which of the cross member 16 is pivotally coupled to the side parts 12, 13.
- the second elastically deformable component 39 has a taper 40, in which it is elastically deformable.
- a "quasi-joint" can be provided by the second elastically deformable component 39, which is designed to allow a small angular rotation between the second side part 13 and the cross member 16.
- the second elastically deformable component 39 has an elastic behavior, as a result of which brittle materials are not suitable for use in the elastically deformable component 39.
- the second elastically deformable component 39 may be formed, for example, as part of the cross member 16 or as part of the second side part 13, wherein only one connection point between the cross member 16 or the second side part 13 is necessary. Alternatively, it can be provided that the second elastically deformable component 39 is formed as an independent component and is connected to both the second side part 13 and to the cross member 16.
- the connection of the second elastically deformable component 39 to the second side part 13 or to the cross member 16 can be realized by means of a fastening means 41, such as a screw.
- a fastening means 41 provision may also be made for the second elastically deformable component 39 to be connected to the second side part 13 or to the cross member 16 by means of a cohesive connection, such as a welded connection.
- the X-coordinate represents the insertion direction of the sheet to be formed and is aligned at right angles with respect to the pressing direction 5.
- the Y coordinate represents the pressing direction 5 and is vertically aligned.
- the Z coordinate is both perpendicular to the X coordinate and the Y coordinate.
- the embodiments show possible embodiments of the press brake 1, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof. All information on ranges of values in objective description should be understood to include these arbitrary and all sub-ranges thereof, eg the indication 1 to 10 should be understood to encompass all sub-ranges, starting from the lower limit 1 and the upper limit 10 that is, all portions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, eg, 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Die Erfindung betrifft eine Abkantpresse, wie dies in Anspruch 1 angegeben ist.The invention relates to a press brake, as indicated in
Aus der
Die
Aufgabe der Erfindung ist es, eine Abkantpresse zu schaffen, welche möglichst genau arbeitet und ein möglichst gleichmäßiges Ergebnis der Biegung erzielt.The object of the invention is to provide a press brake, which works as accurately as possible and achieves the most uniform possible result of the bend.
Diese Aufgabe der Erfindung wird durch eine Abkantpresse gelöst, wie sie in Anspruch 1 angegeben ist.This object of the invention is achieved by a press brake, as indicated in
Erfindungsgemäß ist eine Abkantpresse, umfassend:
- einen feststehenden Pressbalken, welcher sich in Abkantpressenlängsrichtung erstreckt;
- ein erstes Seitenteil, welches in Abkantpressenlängsrichtung gesehen mit einem ersten Endabschnitt des feststehenden Pressbalkens gekoppelt ist;
- ein zweites Seitenteil, welches in Abkantpressenlängsrichtung gesehen mit einem, dem ersten Endabschnitt gegenüberliegendem, zweiten Endabschnitt des feststehenden Pressbalkens gekoppelt ist;
- einen Querträger, welcher mit dem ersten und dem zweiten Seitenteil gekoppelt ist und sich zwischen diesen erstreckt;
- einen verstellbaren Pressbalken, welcher mittels zumindest einem Aktor beweglich mit dem Querträger gekoppelt ist, vorgesehen.
- a fixed press beam which extends in the press brake longitudinal direction;
- a first side part, which is seen in the press brake longitudinal direction coupled to a first end portion of the fixed press beam;
- a second side part which, as seen in the press brake longitudinal direction, is coupled to a second end section, opposite the first end section, of the fixed press beam;
- a cross member which is coupled to the first and second side members and extending between them;
- an adjustable pressing beam, which is coupled by means of at least one actuator movable with the cross member provided.
Der Querträger ist mittels einem ersten Gelenk gelenkig mit dem ersten Seitenteil gekoppelt und mittels einem zweiten Gelenk gelenkig mit dem zweiten Seitenteil gekoppelt. Von Vorteil ist hierbei, dass der Querträger gelenkig mit den Seitenteilen verbunden ist. Somit werden durch den Querträger keine Biegemomente in die Seitenteile eingeleitet. Mit anderen Worten ausgedrückt werden dadurch die Seitenteile nur durch eine Zugkraft belastet, wodurch sich diese weniger verformen als bei einer Belastung durch ein Biegemoment. Dadurch kann erreicht werden, dass die Arbeitsgenauigkeit der Abkantpresse erhöht wird, da diese bei Belastung, insbesondere beim Durchführen eines Biegevorganges, nur geringfügig verformt wird. Darüber hinaus kann die Langlebigkeit der Abkantpresse erhöht werden, dadurch das Vermindern einer schwellenden Biegebelastung einer etwaig auftretenden Materialermüdung entgegen gewirkt wird.The cross member is pivotally coupled by means of a first joint with the first side part and coupled by means of a second joint hinged to the second side part. The advantage here is that the cross member is pivotally connected to the side panels. Thus, no bending moments are introduced into the side parts by the cross member. In other words, the side parts are thereby only loaded by a tensile force, whereby they deform less than a load by a bending moment. This can be achieved that the working accuracy of the press brake is increased because this is only slightly deformed under load, in particular when performing a bending operation. In addition, the longevity of the press brake can be increased, thereby counteracting the reduction of a swelling bending load of any occurring material fatigue.
Weiters kann es zweckmäßig sein, dass das erste und das zweite Gelenk jeweils durch eine Bolzenverbindung gebildet sind. Von Vorteil ist hierbei, dass eine Bolzenverbindung einfach und kostengünstig herzustellen ist. Darüber hinaus sind verschiedene Arten von Bolzenverbindungen einfach auszuführen bzw. ist eine Berechnung einer derartigen Bolzenverbindung einfach möglich. Ein weiterer Vorteil einer Bolzenverbindung liegt darin, dass durch diese die Seitenteile leicht mit dem Querträger zusammengebaut werden können bzw. dass es im Wartungsfall möglich ist, den Querträger vom Grundgestell der Abkantpresse zu entfernen und somit eine vereinfachte Wartung der Abkantpresse zu schaffen.Furthermore, it may be expedient that the first and the second joint are each formed by a bolt connection. The advantage here is that a bolt connection is simple and inexpensive to manufacture. In addition, various types of bolt connections are easy to perform, and calculation of such bolt connection is easily possible. Another advantage of a bolted connection is that it allows the side parts to be easily assembled with the cross member, or that it is possible in the event of maintenance to remove the cross member from the base frame of the press brake and thus to provide simplified maintenance of the press brake.
Ferner kann vorgesehen sein, dass die beiden Seitenteile im Bereich der Bolzenverbindung jeweils als Stange ausgebildet sind und dass der Querträger im Bereich der Bolzenverbindung als Gabel ausgebildet ist, welche mit jeweils einer Stange eines Seitenteils zusammenwirkt. Hierbei ist von Vorteil, dass der Querträger in seinem Endbereich in welchem die Bolzenverbindung ausgeführt ist, durch die Ausbildung einer Gabel eine erhöhte Biegesteifigkeit aufweisen kann. Dies resultiert daraus, dass bei einer Gabel die Krafteinleitung auf zwei Punkte aufgeteilt wird. Das Seitenteil hingegen, welches als Stange ausgeführt ist, braucht im Bereich der Bolzenverbindung nur eine Zugkraft aufzunehmen, wodurch es möglich ist, diesen Bereich möglichst einfach und gewichtsparend auszubilden.Furthermore, it can be provided that the two side parts are each formed in the region of the bolt connection as a rod and that the cross member is formed in the region of the bolt connection as a fork, which cooperates with a respective rod of a side part. It is advantageous that the cross member in its end region in which the bolt connection is made, by the formation of a fork can have an increased bending stiffness. This results from the fact that with a fork the force introduction is divided on two points. The side part, however, which is designed as a rod needs to absorb only a tensile force in the region of the bolt connection, whereby it is possible to form this area as simple and weight-saving.
Darüber hinaus kann vorgesehen sein, dass an den beiden Seitenteilen jeweils ein mittleres Bolzenaufnahmeelement angeordnet ist, in welche ein Bolzen der Bolzenverbindung eingesetzt ist. Von Vorteil ist hierbei, dass ein derartiges mittleres Bolzenaufnahmeelement mittels mechanischer Fertigung einfach herzustellen ist. Insbesondere kann eine Innenpassung zur Aufnahme des Bolzens bei eines mittleren Bolzenaufnahmeelements sehr gut hergestellt werden, sodass sich eine hochgenaue und spielarme Bolzenverbindung realisieren lässt. Darüber hinaus kann das mittleres Bolzenaufnahmeelement gut an einem der Seitenteile positioniert werden und beispielsweise mittels einer Schweißverbindung mit diesen verbunden werden, um eine hochgenaue Abkantpresse zu schaffen.In addition, it may be provided that on the two side parts in each case a central bolt receiving element is arranged, in which a bolt of the bolt connection is inserted. The advantage here is that such a central pin receiving element by means of mechanical manufacturing is easy to manufacture. In particular, an inner fit for receiving the bolt in a middle bolt receiving element can be made very well, so that a highly accurate and low-backlash bolt connection can be realized. In addition, the middle bolt receiving member can be well positioned on one of the side members and connected to it, for example by means of a welded joint, to provide a high-precision press brake.
Vorteilhaft ist auch eine Ausprägung, gemäß welcher das mittlere Bolzenaufnahmeelement mittig bezüglich der Dicke des Seitenteiles angeordnet ist. Dadurch kann erreicht werden, dass beim Aufbringen einer Zugkraft auf das Seitenteil mittels des mittleren Bolzenaufnahmeelements die Zugkraft mittig in das Seitenteil eingeleitet wird. Dadurch wird durch die Zugkraft nicht ein Biegemoment in das Seitenteil eingeleitet.Also advantageous is an expression according to which the middle bolt receiving element is arranged centrally with respect to the thickness of the side part. It can thereby be achieved that when applying a tensile force on the side part by means of the central bolt receiving element, the tensile force is introduced centrally into the side part. As a result, a bending moment is not introduced into the side part by the tensile force.
Ferner kann es zweckmäßig sein, dass das erste und das zweite Gelenk derart ausgebildet sind, dass eine Gelenkachse jeweils in horizontaler Richtung normal auf die Abkantpressenlängsrichtung stehend angeordnet ist. Von Vorteil ist hierbei, dass in Längsrichtung gesehen, eine Durchbiegung des Querträgers von den beiden Gelenken aufgefangen werden kann, sodass es zu keiner Verformung der Seitenteile aufgrund der Durchbiegung des Querträgers kommt.Furthermore, it may be expedient that the first and the second joint are formed such that a hinge axis is arranged in the horizontal direction perpendicular to the Abkantpressenlängsrichtung. The advantage here is that seen in the longitudinal direction, a deflection of the cross member of the two joints can be collected so that there is no deformation of the side parts due to the deflection of the cross member.
Gemäß einer Weiterbildung ist es möglich, dass die Stange und/oder die Gabel mittig der Gelenkachse teilbar ausgeführt sind. Dadurch kann erreicht werden, dass die Wartungsfreundlichkeit beziehungsweise die Zusammenbaubarkeit erleichtert wird.According to a development, it is possible that the rod and / or the fork are designed to be divisible in the center of the hinge axis. This can be achieved that the ease of maintenance or assembly is facilitated.
Darüber hinaus kann vorgesehen sein, dass die beiden Seitenteile als O-Rahmen ausgebildet sind, wobei jeweils mittig eines Seitenteiles eine Ausnehmung vorgesehen ist. Von Vorteil ist hierbei, dass eine derartige Konstruktion eines Seitenteiles auf der einen Seite sehr formstabil ist und darüber hinaus sehr gewichtssparend ausgeführt werden kann.In addition, it can be provided that the two side parts are formed as O-frame, wherein in each case a recess is provided centrally of a side part. The advantage here is that such a construction of a side part on the one hand is very dimensionally stable and beyond can be carried out very weight-saving.
Alternativ dazu kann vorgesehen sein, dass die beiden Seitenteile als C-Rahmen ausgebildet sind, wobei sie eine in eine Seite offene C-förmige Struktur aufweisen. Von Vorteil ist hierbei, dass ein C-Rahmen nach einer Seite offen ist, wodurch erreicht werden kann, dass die Abkantpresse im Bereich der Biegestempel nicht durch die beiden Seitenteile begrenzt ist, wodurch die flexible Einsatzmöglichkeit einer derartig ausgebildeten Abkantpresse erhöht werden kann.Alternatively, it can be provided that the two side parts are formed as C-frame, wherein they have an open in one side C-shaped structure. The advantage here is that a C-frame is open to one side, which can be achieved that the press brake in the region of the punch is not limited by the two side parts, whereby the flexible use of such a trained press brake can be increased.
Weiters kann vorgesehen sein, dass der Querträger durch zwei Trägerelemente gebildet ist, welche in einem Abstand zueinander positioniert sind, wobei der zumindest eine Aktor zwischen den beiden Trägerelementen angeordnet ist. Somit kann erreicht werden, dass die Aktoren zur Bewegung des verstellbaren Pressbalkens symmetrisch am Querträger angeordnet sein können. Dadurch wird durch die Aktoren kein Torsionsmoment in den Querträger eingeleitet. Darüber hinaus kann mittels der beiden Trägerelemente sehr gut eine Gabel für die Bolzenverbindung ausgebildet werden.Furthermore, it can be provided that the cross member is formed by two carrier elements, which are positioned at a distance from each other, wherein the at least one actuator is arranged between the two carrier elements. Thus it can be achieved that the actuators can be arranged symmetrically on the cross member for movement of the adjustable press beam. As a result, no torsional moment is introduced into the cross member by the actuators. In addition, a fork for the bolt connection can be formed very well by means of the two support elements.
Zum besseren Verständnis der Erfindung wird diese anhand der nachfolgenden Figuren näher erläutert.For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
Es zeigen jeweils in stark vereinfachter, schematischer Darstellung:
- Fig. 1
- Abkantpresse in Frontansicht;
- Fig. 2
- ein Ausführungsbeispiel der Abkantpresse mit O-Rahmen in Seitenansicht;
- Fig. 3
- ein Ausführungsbeispiel der Abkantpresse mit C-Rahmen in Seitenansicht;
- Fig. 4
- ein Ausführungsbeispiel der Anbindung des Seitenteils;
- Fig. 5
- eine schematische Verformungsdarstellung einer herkömmlichen Abkantpresse;
- Fig. 6
- eine schematische Verformungsdarstellung einer Abkantpresse mit flexibler Anbindung des Seitenteils;
- Fig. 7
- ein weiteres Ausführungsbeispiel einer möglichen Anbindung eines Seitenteils an den Querträger.
- Fig. 1
- Press brake in front view;
- Fig. 2
- an embodiment of the press brake with O-frame in side view;
- Fig. 3
- an embodiment of the press brake with C-frame in side view;
- Fig. 4
- an embodiment of the connection of the side part;
- Fig. 5
- a schematic deformation representation of a conventional press brake;
- Fig. 6
- a schematic deformation representation of a press brake with flexible connection of the side part;
- Fig. 7
- a further embodiment of a possible connection of a side part of the cross member.
Einführend sei festgehalten, dass in den unterschiedlich beschriebenen Ausführungsformen gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen versehen werden, wobei die in der gesamten Beschreibung enthaltenen Offenbarungen sinngemäß auf gleiche Teile mit gleichen Bezugszeichen bzw. gleichen Bauteilbezeichnungen übertragen werden können. Auch sind die in der Beschreibung gewählten Lageangaben, wie z.B. oben, unten, seitlich usw. auf die unmittelbar beschriebene sowie dargestellte Figur bezogen und sind diese Lageangaben bei einer Lageänderung sinngemäß auf die neue Lage zu übertragen.By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.
Die Abkantpresse 1 umfasst einen Maschinenrahmen 2 in welchem ein feststehender Pressbalken 3 und ein verstellbarer Pressbalken 4 angeordnet sind. Der verstellbare Pressbalken 4 ist in einer vertikalen Pressrichtung 5 verstellbar am Maschinenrahmen 2 gelagert und somit relativ zum feststehenden Pressbalken 3 beweglich. Die Bewegung des verstellbaren Pressbalkens 4 erfolgt durch Aktoren 6, welche diesen mit dem Maschinenrahmen 2 verbinden.The
Der feststehende Pressbalken 3 ist vorzugsweise direkt mit dem Maschinenrahmen gekoppelt und somit nicht verstellbar.The fixed
Die beiden Pressbalken 3, 4 weisen vorzugsweise eine Werkzeugaufnahme 7 auf, in welcher ein oder mehrere Biegewerkzeuge 8 aufgenommen werden können. Die Biegewerkzeuge 8 können hierbei als Biegestempel oder als Biegegesenk ausgebildet sein. Durch die Biegewerkzeuge 8 kann eine Biegekante im zu biegenden Blechwerkstück 9 erzeugt werden. Die Biegekante erstreckt sich hierbei in Abkantpressenlängsrichtung 10. Die Pressbalken 3, 4 weisen in Abkantpressenlängsrichtung 10 ihre größte Längserstreckung auf. Durch Einsetzen von mehreren Biegewerkzeugen 8 in die Pressbalken 3, 4, welche in Abkantpressenlängsrichtung 10 nebeneinander angeordnet sind, kann die möglich erzeugbare Länge der Biegekante variiert werden.The two
Der Maschinenrahmen 2 umfasst eine Grundplatte 11, welche die Basis der Abkantpresse 1 darstellt. Die Grundplatte 11 dient zur Befestigung der Abkantpresse 1 am Untergrund, wie etwa einem Hallenboden.The
Weiters umfasst der Maschinenrahmen 2 ein erstes Seitenteil 12 und ein zweites Seitenteil 13, welche mit der Grundplatte 11 gekoppelt sind. Die beiden Seitenteile 12, 13 erstrecken sich von der Grundplatte 11 ausgehend in vertikaler Richtung nach oben. Wie aus
Wie aus
Der Querträger 16 ist mittels einem ersten Gelenk 17 gelenkig mit dem ersten Seitenteil 12 gekoppelt und mittels einem zweiten Gelenk 18 gelenkig mit dem zweiten Seitenteil 13 gekoppelt.The
Hierbei kann vorgesehen sein, dass die beiden Gelenke 17, 18 jeweils als Bolzenverbindung 19 ausgeführt sind, wobei jeweils ein Bolzen 20 zur Verbindung der Einzelteile dient.It can be provided that the two
Insbesondere kann vorgesehen sein, dass die beiden Seitenteile 12, 13 im Bereich der Bolzenverbindung 19 jeweils als Stange 21 ausgebildet sind und dass der Querträger 16 jeweils als Gabel 22 ausgebildet ist. Die Bolzenverbindung 19 in Form von Stange 21 und Gabel 22 kennzeichnet sich dadurch, dass die Gabel 22 ein erstes Bolzenaufnahmeelement 23 und ein zweites Bolzenaufnahmeelement 24 aufweist, welche beidseitig eines mittleren Bolzenaufnahmeelementes 25 der Stange 21 angeordnet sind.In particular, it can be provided that the two
Die einzelnen Bolzenaufnahmeelemente 23, 24, 25 können beispielsweise in Form von Hülsen ausgebildet sein, welche rotationssymmetrisch aufgebaut sind und mittig ein Durchgangsloch zur Aufnahme des Bolzens 20 aufweisen. Die Hülsen können hierbei durch ein spangebendes Verfahren, etwa der Bearbeitung auf einer Drehbank, hergestellt werden. Derartig hergestellte Hülsen können im Produktionsprozess zur Herstellung der Abkantpresse 1 an einen der beiden Seitenteile 12, 13 bzw. an den Querträger 16 angeschweißt werden. Eine derartige Schweißverbindung kann beispielsweise durch eine Laserschweißverbindung realisiert werden.The individual
In einer Alternativvariante ist es auch denkbar, dass die Bolzenverbindung 19 derart ausgeführt ist, dass der Querträger 16 als Stange ausgebildet ist und dass die beiden Seitenteile 12, 13 als Gabel ausgebildet sind.In an alternative variant, it is also conceivable that the
Wie aus
Weiters ist vorzugsweise vorgesehen, dass, wie in
Wie aus
Wie in einer Zusammenschau aus den
Weiters kann vorgesehen sein, dass zwischen einem Seitenteil 12, 13 und dem verstellbaren Pressbalken 4 eine Führungsanordnung 32 ausgebildet ist, welche zur Führung des verstellbaren Pressbalkens 4 dient. Dadurch kann erreicht werden, dass der verstellbare Pressbalken 4 eine erhöhte Stabilität aufweist und die Aktoren 6 somit nur als Druck- bzw. Zugelemente dienen und nicht die Führung des verstellbaren Pressbalkens 4 übernehmen müssen.Furthermore, it can be provided that between a
Wie in dem Ausführungsbeispiel in
In der
In dem in
In der
In
In der
Der kürze halber ist in
Um die gelenkige Verbindung durch das zweite elastisch verformbare Bauteil 39 ähnlich einem zweiten Gelenk 18 zu erreichen, kann vorgesehen sein, dass das zweite elastisch verformbare Bauteil 39 eine Verjüngung 40 aufweist, in welchem dieses elastisch verformbar ist. Dadurch kann durch das zweite elastisch verformbare Bauteil 39 ein "Quasigelenk" bereitgestellt werden, welches dazu ausgebildet ist, um eine geringe winkelige Verdrehung zwischen dem zweiten Seitenteil 13 und dem Querträger 16 zu ermöglichen. Um die gewünschten Eigenschaften erreichen zu können, ist es notwendig, dass das zweite elastisch verformbare Bauteil 39 ein elastisches Verhalten aufweist, wodurch spröde Werkstoffe nicht zum Einsatz im elastisch verformbaren Bauteil 39 geeignet sind.In order to achieve the articulated connection by means of the second
Das zweite elastisch verformbare Bauteil 39 kann beispielsweise als Teil des Querträgers 16 oder als Teil des zweiten Seitenteils 13 ausgebildet sein, wobei nur eine Anschlussstelle zwischen Querträger 16 oder zweitem Seitenteil 13 notwendig ist. Alternativ dazu kann vorgesehen sein, dass das zweite elastisch verformbare Bauteil 39 als eigenständiges Bauteil ausgebildet ist und sowohl an das zweite Seitenteil 13 als auch an den Querträger 16 angebunden ist. Die Anbindung des zweiten elastisch verformbaren Bauteils 39 an das zweite Seitenteil 13 bzw. an den Querträger 16 kann mittels einem Befestigungsmittel 41, wie etwa einer Schraube realisiert werden. Alternativ zu einem Befestigungsmittel 41 kann auch vorgesehen sein, dass des zweite elastisch verformbare Bauteil 39 an das zweite Seitenteil 13 bzw. an den Querträger 16 mittels einer Stoffschlüssigen Verbindung, wie etwa einer Schweißverbindung angebunden ist.The second
Auf weitere für den Betrieb einer derartigen Biegepresse 3 erforderliche Details, wie beispielsweise Sicherheitseinrichtungen, Anschlagsanordnungen und/oder Kontrollvorrichtungen wird in der gegenständlichen Beschreibung zur Vermeidung einer unnötigen Länge der Beschreibung verzichtet.Further details required for the operation of such a
Als Koordinatensystem oder Koordinatenrichtung wird bei Abkantpressen 1 in der vorliegenden Beschreibung folgende Ausrichtung gewählt. Die X-Koordinate stellt die Einschubrichtung des umzuformenden Blechs dar und ist rechtwinkelig bezüglich der Pressrichtung 5 ausgerichtet. Die Y-Koordinate stellt die Pressrichtung 5 dar und ist vertikal ausgerichtet. Schließlich ist die Z-Koordinate sowohl rechtwinkelig auf die X-Koordinate als auch auf die Y-Koordinate ausgerichtet.As a coordinate system or coordinate direction, the following alignment is selected in
Die Ausführungsbeispiele zeigen mögliche Ausführungsvarianten der Abkantpresse 1, wobei an dieser Stelle bemerkt sei, dass die Erfindung nicht auf die speziell dargestellten Ausführungsvarianten derselben eingeschränkt ist. Sämtliche Angaben zu Wertebereichen in gegenständlicher Beschreibung sind so zu verstehen, dass diese beliebige und alle Teilbereiche daraus mitumfassen, z.B. ist die Angabe 1 bis 10 so zu verstehen, dass sämtliche Teilbereiche, ausgehend von der unteren Grenze 1 und der oberen Grenze 10 mit umfasst sind, d.h. sämtliche Teilbereiche beginnen mit einer unteren Grenze von 1 oder größer und enden bei einer oberen Grenze von 10 oder weniger, z.B. 1 bis 1,7, oder 3,2 bis 8,1, oder 5,5 bis 10.The embodiments show possible embodiments of the
Der Ordnung halber sei abschließend darauf hingewiesen, dass zum besseren Verständnis des Aufbaus der Abkantpresse 1 diese bzw. deren Bestandteile teilweise unmaßstäblich und/oder vergrößert und/oder verkleinert dargestellt wurden
Claims (10)
- A press brake (1) comprising:a stationary press bar (3) extending in the longitudinal direction (10) of the press brake;a first side part (12) which, viewed in the longitudinal direction (10) of the press brake, is connected with a first end section (14) of the stationary press bar (3);a second side part (13) which, viewed in the longitudinal direction (10) of the press brake, is connected with a second end section (15) of the stationary press bar (3) located opposite the first end section (14);a cross-member (16) which is connected with the first (12) and second side part (13) and which extends between them;an adjustable press bar (4) which is moveably connected with the cross-member (16) by means of at least one actuator (6);characterised in thatthe cross-member (16) is flexibly connected with the first side part (12) by means of a first joint (17), and is flexibly connected with the second side part (13) by means of a second joint (18).
- The press brake according to claim 1, characterised in that the first (17) and the second joint (18) are each formed by a bolt connection (19).
- The press brake according to claim 2, characterised in that the two side parts (12, 13) are each formed as a rod (21) in the bolt connection (19) area, and that the cross-member (16) is formed as a fork (22) in the bolt connection (19) area, which interacts with each side part (12, 13) rod (21).
- The press brake according to one of claims 2 to 3, characterised in that a central bolt-receiving element (25) is arranged on each of the two side parts (12, 13), into which a bolt (20) of the bolt connection (19) is inserted.
- The press brake according claim 4, characterised in that the central bolt-receiving element (25) is arranged centrally in relation to the thickness (26) of the side part (12, 13).
- The press brake according to one of the preceding claims, characterised in that the first (17) and second joint (18) are formed in such a way that in each case a joint axis (27) is arranged in a standing position horizontally aligned normally with the longitudinal direction (10) of the press brake.
- The press brake according to one of the preceding claims, characterised in that the rod (21) and/or the fork (22) are designed so that they may be split centrally to the joint axis.
- The press brake according to one of the preceding claims, characterised in that the two side parts (12, 13) are formed as O-frames, wherein a recess (33) is provided in the centre of each side part (12).
- The press brake according to one of claims 1 to 7, characterised in that both side parts (12, 13) are formed as C-frames, wherein they have a C-shaped structure which opens into one side.
- The press brake according to one of the preceding claims, characterised in that the cross-member (16) is formed of a first (28) and a second support element (29), which are positioned at a distance (30) from one another, wherein the at least one actuator (6) is arranged between the two support elements (28, 29).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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ATA50150/2015A AT516493B1 (en) | 2015-02-25 | 2015-02-25 | press brake |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3061538A1 EP3061538A1 (en) | 2016-08-31 |
EP3061538B1 true EP3061538B1 (en) | 2017-10-18 |
Family
ID=55085613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16151210.8A Active EP3061538B1 (en) | 2015-02-25 | 2016-01-14 | Press brake |
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EP (1) | EP3061538B1 (en) |
AT (1) | AT516493B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019104502A1 (en) * | 2019-02-21 | 2020-08-27 | Ralf Beger | Combination machine for swiveling and swaging a workpiece as well as using a swivel bending machine as a press brake |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US4170127A (en) * | 1978-03-27 | 1979-10-09 | Butera Anthony W | Calibrated oil burner filter paper |
US4672831A (en) * | 1983-09-21 | 1987-06-16 | Amada Company, Limited | Bending press |
DE4138286A1 (en) * | 1991-11-21 | 1993-05-27 | M & S Brugg Ag | PRESS |
DE4138285C2 (en) * | 1991-11-21 | 1994-04-07 | M & S Brugg Ag Brugg | Hydraulic press brake |
FR2908684B1 (en) * | 2006-11-20 | 2009-11-27 | Amada Europ | MECHANICAL CONNECTION FOR FORCE TRANSFER WHILE ENSURING INSULATION |
AT507412B1 (en) | 2008-10-15 | 2010-05-15 | Trumpf Maschinen Austria Gmbh | BENDING PEG WITH SUPPORT BEARING DEVICE FOR DRIVE AGENTS |
AT508164B1 (en) * | 2009-04-29 | 2011-01-15 | Trumpf Maschinen Austria Gmbh | BENDING PEG WITH ADDITIONAL JIBS |
FI125471B (en) * | 2009-12-11 | 2015-10-15 | Aliko Oy Ltd | A method of forming a press press body and a press press |
ITMI20110977A1 (en) * | 2011-05-30 | 2012-12-01 | Finn Power Italia S R L | FOLDING PRESS |
AT513150B1 (en) * | 2012-12-06 | 2014-02-15 | Trumpf Maschinen Austria Gmbh | press brake |
-
2015
- 2015-02-25 AT ATA50150/2015A patent/AT516493B1/en active
-
2016
- 2016-01-14 EP EP16151210.8A patent/EP3061538B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019104502A1 (en) * | 2019-02-21 | 2020-08-27 | Ralf Beger | Combination machine for swiveling and swaging a workpiece as well as using a swivel bending machine as a press brake |
DE102019104502B4 (en) * | 2019-02-21 | 2021-01-14 | Ralf Beger | Combination machine for swiveling and swaging a workpiece as well as using a swivel bending machine as a press brake |
Also Published As
Publication number | Publication date |
---|---|
AT516493B1 (en) | 2016-06-15 |
AT516493A4 (en) | 2016-06-15 |
EP3061538A1 (en) | 2016-08-31 |
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