EP3010665B1 - Outil de pliage - Google Patents

Outil de pliage Download PDF

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Publication number
EP3010665B1
EP3010665B1 EP14749700.2A EP14749700A EP3010665B1 EP 3010665 B1 EP3010665 B1 EP 3010665B1 EP 14749700 A EP14749700 A EP 14749700A EP 3010665 B1 EP3010665 B1 EP 3010665B1
Authority
EP
European Patent Office
Prior art keywords
tool
bending
locking
bending tool
securing
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
Application number
EP14749700.2A
Other languages
German (de)
English (en)
Other versions
EP3010665A1 (fr
Inventor
Johann Mayrhofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP3010665A1 publication Critical patent/EP3010665A1/fr
Application granted granted Critical
Publication of EP3010665B1 publication Critical patent/EP3010665B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21D5/0209—Tools therefor
    • B21D5/0236—Tool clamping
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • B21D5/0209—Tools therefor
    • B21D5/0254—Tool exchanging

Definitions

  • the invention relates to a bending tool for insertion into a tool holder and elements for securing this bending tool, as indicated in the independent claim 1.
  • bending tools versions are known in which the bending tool can be used by means of a quick-release system from below into the tool holder, whereby it does not have to be inserted laterally in this and is moved by moving into the intended position.
  • a securing element is provided which prevents lateral slipping in the tool holder in the untensioned state.
  • a bending tool which contains a locking element in order to be able to be inserted from below into a tool holder and also to be able to be removed downwards again from the tool holder.
  • This locking element is actuated by means of a push button, which is mounted laterally on the bending tool.
  • a clamping element is designed to secure the bending tool used in the tool holder in the horizontal direction against slipping.
  • the clamping element acts due to a lateral application of a force, and thus friction against the tool holder.
  • the actuation of this securing element via a further actuating element, which is mounted laterally on the bending tool. Consequently, in order to insert a bending tool into the tool holder, both operating elements mounted on the side of the bending element must be pressed by the operator.
  • a disadvantage of the known design is that for insertion of the bending tool always both actuators must be pressed. Thus, the operator's freedom of action for additional actions and manipulations is extremely limited. Furthermore, it is considered disadvantageous that, if not both actuators are pressed simultaneously and completely, it may come to a one-sided jamming of the bending tool, which may happen that the bending tool is inserted obliquely and thus in an undefined position in the tool holder. Is the operator now careless and leaves that Losing tools may cause the bending tool to fall and inflict injury on the operator.
  • the present invention has for its object to further develop a bending tool for rapid insertion into a tool holder so that it is easy and simple to use, and that any security risks are reduced as possible by unfavorable jamming. Even with automated production, it is essential that a bending tool, which is used by a manipulator in the tool holder, is no longer unintentionally changed in its position in the tool holder after the insertion process. This is all the more necessary the more accurate the parts produced are.
  • a bending tool is designed for insertion into a tool holder.
  • This comprises a tool body, a locking element coupled to an actuating element accessible outside the tool receptacle and having a locking nose for securing the bending tool in the tool receptacle by engagement with a recess arranged therein, wherein a basic position of the actuating element with an unlocking position of the locking element and an actuating position of the actuating element with a Locking position of the locking element corresponds.
  • a tool position securing element displaceably mounted in the tool body is provided which, in a securing position projecting beyond the tool body, establishes a connection for fixing the position of the tool body with respect to a displacement direction in the tool receptacle. Both the locking element and the tool position securing element are coupled to the same actuating element.
  • An advantage of the inventive design is that both a locking element is present, which secures the tool against falling out of the tool holder, and which can be moved away for easy removal of the tool from this tool holder, as well as a tool position securing element, which prevents the tool from slipping the tool holder secures. It is particularly advantageous here that both the locking element and the tool position securing element can be moved together by means of only one actuating element. Furthermore, it may be expedient that the tool position securing element is coupled via the locking element with the actuating element. The advantage here is that the locking element which is moved by the actuating element is used for transmitting the movement to the tool position securing element, and thus no further components are necessary.
  • both the tool position securing element and the locking element are coupled directly to the actuating element.
  • the advantage here is that in the design of the locking element no consideration must be taken to the tool position assurance element to move this as stated above with the aid of the locking element.
  • the locking element can thus be made very small in its extent.
  • the shape of the tool position securing member or the shape of the actuator must be reshaped so that they are in mechanical contact with each other.
  • it may be expedient that the locking element and the tool position securing element are coupled to one another via a mechanical connection.
  • the advantage here is that a mechanical connection manufacturing technology is easy to manufacture, and that this is also less error prone.
  • the locking element and the tool position securing element are coupled to each other in motion by a substantially incompressible fluid.
  • the advantage here is that no structural restrictions by transmission elements in the tool are necessary by the operation by means of a fluid.
  • the power transmission happens through the fluid in that the actuator over an active surface transfers the force to the fluid, thereby pressurizing it.
  • the pressure of the fluid is transmitted via channels or lines in the bending tool on the active surfaces of the locking element or the tool position securing element and there applied thus a force which can be converted into a movement.
  • the tool position securing element has a friction surface for producing a frictional connection with the tool holder.
  • the advantage here is that the bending tool can be positioned in any position along the tool holder by making a non-positive connection between the bending tool and tool holder by means of a friction surface.
  • the tool position securing element is biased by a spring element in the direction of the securing position. It is particularly advantageous in this case that thus in the unactuated state of the actuating element, the tool position securing element is in its securing position. It must therefore be released only the operating knob of the actuator to fix the bending tool in position and secure.
  • the spring element is a leaf spring, which is oriented in the adjustment direction of the tool position securing element and by a, transverse to the longitudinal extent of the leaf spring applied force einknickbar and thus shortened. It is particularly advantageous here that the leaf spring can apply a very high working force along the longitudinal extent of the leaf spring in the almost fully extended state comparatively to a transverse actuation force. Thus, a good translation can be achieved, whereby the actuator can be so smooth that it can also be pressed by hand, and yet sufficient force can be applied to the tool position assurance element.
  • the spring element is formed by a coil spring.
  • the advantage here is that a coil spring is easy to apply, and that the requirements for the accuracy of recording the tool position assurance element in the tool body of the bending tool are rather low.
  • coil springs are in the proposed form of commercial products, which can be purchased inexpensively and easily.
  • the tool position securing element in a recess between the two ends has an angled to a direction of movement of the tool position securing element surface, which is contacted by an actuating lug of the locking element or the actuating element.
  • the advantage here is that it can be achieved by this measure, that a coil spring, or such a spring can be used, which applies a purely extending in the axial direction of force. Due to the angled surface, a translation of the force and the movement of the locking element is realized on the tool position securing element.
  • a press bar 1 As well as an attached tool holder 2, shown with recorded bending tool 3 in a perspective view. Particularly visible is the tool body 4, which engages in the bending process in the sheet to be bent.
  • the bending tool 3 can be positioned in the tool holder 2 in the horizontal displacement direction 5. For this purpose, the bending tool 3 in the horizontal displacement direction 5 must be inserted laterally into the tool holder 2 of the press bar 1.
  • the bending tool 3 is inserted in the vertical direction of insertion 6 in the tool holder 2.
  • the bending tool 3 is constructed in such a way, as shown in the following FIG. By the elements described below, a trouble insertion of the bending tool 3 in the vertical direction of insertion 6 can be ensured.
  • a plurality of bending tools 3 can be positioned, which are of similar construction, and adjoin one another and thus form a long machining edge. Another possibility is that several different bending tools 3 are positioned in the tool holder 2. These different bending tools 3 are then used for various bending operations and can also be replaced individually. If bending tools 3 of different types are used for different working steps, then it is usual that they are arranged at a certain distance from each other.
  • Fig. 2 shows a bending tool 3 in a perspective view.
  • the locking lug 9 of the locking element 8 which is moved out of the tool body 4 and thus can engage in the tool holder 2.
  • a recess 10, also called gripping groove which in the tool body 4 has a shape such that a manipulator for the bending tool change can engage in this recess, and thus equip the bending tool and can disarm.
  • this recess 10 is formed in the form of a groove, but it is also conceivable that, for example, a simple bore is formed, in which a manipulator can engage.
  • This manipulator may be a robot arm, which is intended for handling the sheets to be bent.
  • the manipulator is, for example, a backgauge device, which is used for the tool change.
  • a bending tool 3 can be equipped.
  • the setting can be done manually, with an operator using the bending tool 3 in the tool holder 2.
  • a manipulator uses the bending tool 3 in the tool holder 2. In both cases, the actuator 7 must be pressed to allow positioning of the bending tool 3 in the tool holder.
  • Fig. 3 shows a section through a bending tool 3 in a position of the actuating element 7 in which the bending tool 3 is moved straight into the tool body 4 in the vertical direction of insertion 6.
  • the actuating element 7 is pressed into the tool body 4.
  • the free movement of the bending tool 3 is ensured in the tool holder 2.
  • the exact mechanisms will be described, which are set by the actuation of the actuating element 7 in force.
  • the actuator 7 can be operated. On the one hand, it is possible to use the bending tool 3 manually in the tool holder 2, wherein the actuating element 7 is pressed by a finger of the operator. On the other hand, in an automated tool change a gripping element in the recess 10 engage, while it presses the actuator 7 at the same time.
  • the actuating element 7 is preferably designed so that it is guided directly in the tool body 4 and thus is movable only in an actuating direction 11. This movement of the actuating element 7 along an actuating direction 11 can take place between a basic position of the actuating element 12 and an actuating position of the actuating element 13.
  • the locking element 8 is attached, which is fixed by means of a fastening element 14, for example, a hexagon socket screw.
  • the locking element 8 is thus coupled directly to the movement of the actuating element 7 and is thus displaceable in the actuating direction 11.
  • a tool position securing element 17 which secures the bending tool 3 against unintentional displacement in the displacement direction 5 in the tool holder 2, as long as the actual tool clamping, with which the bending tool 3 is clamped in the tool holder, is not yet activated.
  • the securing of the bending tool 3 is ensured when the tool position securing element 17 is in its relation to the tool body 4 outwardly projecting securing position 18.
  • a friction surface 19 of the tool position securing element 17 produces a frictional connection with the tool holder 2.
  • the tool position securing element 17 is designed circular-cylindrical and can thus be moved in a bore 22 of the tool body 4 in the adjustment direction of the tool position securing element 21.
  • the spring element 20 in the form of a leaf spring, attached via a fastening means.
  • the actuation of the tool position securing element 17 is effected in that the spring element 20 is pressed in the form of the leaf spring over an actuating lug 23 of the locking element 8 transversely to the longitudinal extent 24 of the leaf spring, and thus shortens this in length.
  • the tool position securing element 17 is moved from its securing position 18 in the direction of the tool body 4.
  • the frictional engagement between the friction surface 19 and the tool holder 2 is interrupted.
  • Fig. 3 shows a section through a bending tool 3, in which the tool position securing element 17 is completely retracted into the tool body 4, and thus a free movement of the bending tool 3 is made possible.
  • the actuating element 7 is coupled directly to the locking element 8 and the locking element 8 is coupled via a spring element 20 to the tool position securing element 17, but that the tool position securing element 17 and the locking element 8 are each coupled individually to the actuating element 7.
  • the actuating element 7 does not transmit the actuating movement, and thus the actuating force, via a mechanical connection to the locking element 8 and the tool position securing element 17, but that a hydraulic system is interposed, onto which the actuating element 7 applies a force and which one Force on the tool position assurance element 17 and the locking element 8 passes.
  • Fig. 4 shows the bending tool 3 as it is inserted in the tool holder 2 and is locked so that it is secured in position and can not be removed from the tool holder 2.
  • This position is the position in which the bending tool 3 is located after the setup, before it is stretched by the tool holder and thus ready to work.
  • the actuating element 7 is not pressed, whereby the locking element 8 is in the locking position 15 of the locking element 8.
  • the locking element 8, actuator 7 and the tool position securing element 17 are characterized in the in this Fig. 4 shown position that the leaf spring applies a force to return to their original, flat or stretched initial state. This effect on the one hand ensures that the tool position securing element 17 is pushed upwards and thus into its securing position 18.
  • the leaf spring presses on the operating lug 23 of the locking element 8 and thus applies a force to bring it into the position shown.
  • the tool position securing element 17 and the tool holder 2 have a fine toothing on surfaces in contact with each other in the securing position 18, and thus securing the bending tool 3 against accidental slipping in the direction 5 is ensured via positive locking.
  • FIG. 5 a further and possibly independent embodiment of the / of the bending tool 3 is shown, again for like parts, the same reference numerals or component designations as in the preceding Fig. 1-4 be used. In order to avoid unnecessary repetition, the detailed description in the previous ones will be used Fig. 1-4 referred or referred.
  • a coil spring is arranged in this case as a spring element 20.
  • This coil spring endeavors to press the tool position securing element 17 upwards in the direction of the tool holder 2.
  • the spring element 20 in the form of a helical spring can displace the tool position securing element 17 in the direction of the securing position 18, whereby the actuating nose 23 of the locking element 8 is pressed out of the tool position securing element 17 via the angled surface 25.
  • the actuating element 7 is moved by the locking element 8 in its basic position.

Claims (11)

  1. Outil de pliage (3) destiné à être monté dans un porte-outil (2), comprenant un corps d'outil (4), un élément de verrouillage (8) couplé à un élément d'actionnement (7) accessible depuis l'extérieur du porte-outil (2), avec un ergot de verrouillage (9) pour sécuriser l'outil de pliage (3) dans le porte-outil (2) par mise en prise dans une cavité situé dans celui-ci, dans lequel une position de base de l'élément d'actionnement (12) correspond à une position de déverrouillage de l'élément de verrouillage (16) et une position d'actionnement de l'élément d'actionnement (13) correspond à une position de verrouillage de l'élément de verrouillage (15), en outre un élément de sécurisation de position d'outil (17) monté de manière mobile dans le corps d'outil (4) qui, dans une position de sécurisation (18) faisant saillie par rapport au corps d'outil (4), établit une liaison pour la fixation de la position du corps d'outil (4) par rapport à une direction de déplacement (5) dans le porte-outil (2), caractérisé en ce qu'à la fois l'élément de verrouillage (8) et l'élément de sécurisation de position d'outil (17) sont couplés par le même élément d'actionnement (7), dans lequel l'élément de verrouillage (8) est fixé directement à l'élément d'actionnement (7) au moyen d'un élément de fixation (14).
  2. Outil de pliage selon la revendication 1, caractérisé en ce que l'élément de sécurisation de position d'outil (17) est couplé avec l'élément d'actionnement (7) par l'intermédiaire de l'élément de verrouillage (8).
  3. Outil de pliage selon la revendication 1, caractérisé en ce qu'à la fois l'élément de sécurisation de position d'outil (17) et l'élément de verrouillage (8) sont couplés directement à l'élément d'actionnement (7).
  4. Outil de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de verrouillage (8) et l'élément de sécurisation de position d'outil (17) sont couplés l'un à l'autre de manière mobile via une liaison mécanique.
  5. Outil de pliage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'élément de blocage (8) et l'élément de sécurisation de position d'outil (17) sont couplés l'un à l'autre de manière mobile par un fluide sensiblement incompressible.
  6. Outil de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de sécurisation de position d'outil (17) présente une surface de frottement (19) pour réaliser une liaison par frottement avec le porte-outil (2).
  7. Outil de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de sécurisation de position d'outil (17) est sollicité dans la direction de la position de sécurisation (18) par l'intermédiaire d'un élément à ressort (20).
  8. Outil de pliage selon la revendication 7, caractérisé en ce que l'élément à ressort (20) est un ressort à lames qui est orienté dans la direction de réglage de l'élément de sécurisation de position d'outil (21), et peut être replié et ainsi raccourci par une force appliquée au ressort à lames transversalement à l'étendue longitudinale (24).
  9. Outil de pliage selon la revendication 7, caractérisé en ce que l'élément à ressort (20) est formé par un ressort hélicoïdal.
  10. Outil de pliage selon l'une quelconque des revendications 7 à 9, caractérisé en ce que l'élément de sécurisation de position d'outil (17), entre les deux extrémités, présente une surface (25) formant un angle par rapport à une direction de déplacement de l'élément de sécurisation de position d'outil (17), qui est mise en contact avec un ergot d'actionnement (23) de l'élément de verrouillage (8) ou l'élément d'actionnement (7).
  11. Outil de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de sécurisation de position d'outil (17) est réalisé de forme cylindrique circulaire, et est guidé dans un alésage (22) dans le corps d'outil (4).
EP14749700.2A 2013-06-20 2014-06-17 Outil de pliage Active EP3010665B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50403/2013A AT514078B1 (de) 2013-06-20 2013-06-20 Biegewerkzeug
PCT/AT2014/050135 WO2014201489A1 (fr) 2013-06-20 2014-06-17 Outil de pliage

Publications (2)

Publication Number Publication Date
EP3010665A1 EP3010665A1 (fr) 2016-04-27
EP3010665B1 true EP3010665B1 (fr) 2017-04-26

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ID=51300461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14749700.2A Active EP3010665B1 (fr) 2013-06-20 2014-06-17 Outil de pliage

Country Status (4)

Country Link
US (1) US10144045B2 (fr)
EP (1) EP3010665B1 (fr)
AT (1) AT514078B1 (fr)
WO (1) WO2014201489A1 (fr)

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AT515526B1 (de) * 2014-08-12 2015-10-15 Trumpf Maschinen Austria Gmbh Biegewerkzeug und Greifvorrichtung zum Manipulieren des Biegewerkzeuges
AT515781B1 (de) * 2014-10-08 2015-12-15 Trumpf Maschinen Austria Gmbh Handhabungssystem für Biegewerkzeuge
AT521173B1 (de) * 2018-06-27 2019-11-15 Trumpf Maschinen Austria Gmbh & Co Kg Biegewerkzeug mit Distanzelement
CN112423906B (zh) * 2018-07-17 2023-12-22 株式会社天田集团 折弯机用金属模具
CN108941325A (zh) * 2018-08-27 2018-12-07 安徽联盟模具工业股份有限公司 一种折弯机模具夹紧装置转换机构
CN109108166A (zh) * 2018-10-23 2019-01-01 安徽联盟模具工业股份有限公司 一种适用于智能折弯机器人自动换模的模具夹钳机构
CN113751593A (zh) * 2021-09-24 2021-12-07 安徽东海机床制造有限公司 一种折弯机非平行折弯的上下组合模

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EP2143507B1 (fr) * 1999-01-13 2015-08-12 Amada Company, Limited Système de presse plieuse, procédé de montage d'outils sur un tel système et procédé de fabrication de produits de presse plieuse
US6467327B1 (en) * 2001-08-15 2002-10-22 Wilson Tool International, Inc. Press brake tool and tool holder
AT411819B (de) * 2002-09-16 2004-06-25 Trumpf Maschinen Austria Gmbh Biegewerkzeug und werkzeugaufnahmevorrichtung für ein solches
US6928852B2 (en) * 2003-03-31 2005-08-16 Wila B.V. Combination of a press brake clamping system and at least a press brake tool
AT414327B (de) * 2003-05-14 2007-09-15 Trumpf Maschinen Austria Gmbh Werkzeugaufnahmevorrichtung
US7661288B2 (en) * 2003-07-01 2010-02-16 Wilson Tool International Inc. Press brake tool safety key assemblies
CA2611564A1 (fr) * 2005-06-10 2006-12-21 Terry G. Pabich Outil de frein a pression integrant un siege et/ou un mecanisme de blocage
CN101360571B (zh) 2005-11-11 2012-05-30 韦拉有限公司 用于安全部件的致动部件中的带有停止装置的成形工具
ATE501810T1 (de) * 2006-06-01 2011-04-15 Wila Bv Auswechselbares werkzeug/manipulator kombination
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AT511591B1 (de) * 2012-02-07 2013-01-15 Trumpf Maschinen Austria Gmbh Biegewerkzeug mit sicherheitseinrichtung
JP5947620B2 (ja) * 2012-05-23 2016-07-06 株式会社アマダホールディングス 上型及び上型の仮止め方法

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Also Published As

Publication number Publication date
AT514078A4 (de) 2014-10-15
US20160136706A1 (en) 2016-05-19
AT514078B1 (de) 2014-10-15
WO2014201489A1 (fr) 2014-12-24
EP3010665A1 (fr) 2016-04-27
US10144045B2 (en) 2018-12-04

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