EP1133368B1 - Verriegelungseinrichtung zum festlegen eines werkzeugs an einer maschine - Google Patents

Verriegelungseinrichtung zum festlegen eines werkzeugs an einer maschine Download PDF

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Publication number
EP1133368B1
EP1133368B1 EP99955845A EP99955845A EP1133368B1 EP 1133368 B1 EP1133368 B1 EP 1133368B1 EP 99955845 A EP99955845 A EP 99955845A EP 99955845 A EP99955845 A EP 99955845A EP 1133368 B1 EP1133368 B1 EP 1133368B1
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EP
European Patent Office
Prior art keywords
tool
hook
locking
locking device
keyway
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.)
Expired - Lifetime
Application number
EP99955845A
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English (en)
French (fr)
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EP1133368A1 (de
Inventor
Flemming Ketler Iversen
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AKI INVEST APS
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AKI Invest ApS
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Publication date
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Publication of EP1133368A1 publication Critical patent/EP1133368A1/de
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Publication of EP1133368B1 publication Critical patent/EP1133368B1/de
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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
    • 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

Definitions

  • the invention concerns a locking device for securing a tool in a machine such as, for example, a bending machine, a pressing machine or the like, where the tool, e.g. a bending tool, a press tool or the like, is secured in a tool holder in the machine.
  • the tool has a shaft part which is accommodated in a tool-receiving channel in the tool holder and is secured herein partly by means of a safety arrangement which co-operates with a keyway in the tool holder and partly by means of a locking system.
  • a locking device of this kind is known from EP patent publication no. 494 714, where the locking device is used to secure a press tool in a power press, where an upper press tool and a lower press tool can move towards each other for the processing of a material which is placed between the two press tools.
  • the locking device can be used for securing both the upper and the lower press tool.
  • the known locking device comprises both a safety arrangement and a locking system.
  • the safety arrangement secures the press tool immediately upon this being placed in the tool holder, after which the locking system which, e.g., can be of a mechanical, pneumatic, electrical or hydraulic type, can be activated so that the press tool is clamped in the tool holder.
  • the system works in a corresponding manner when the press tool is to be removed, in that the locking system is first deactivated so that the press tool is secured solely by the safety arrangement.
  • the safety arrangement can be released manually so that the press tool can be taken out.
  • the known safety device consists of a spring-loaded pawl which can be displaced in a hole transversely to the shaft part of the tool, a release button which can similarly be displaced in a hole transversely to the tool, and a connecting link which can transfer the movement from the release button to the spring-loaded pawl.
  • the spring-loaded pawl can engage in the keyway in the tool holder so that the tool is secured.
  • the release button which is disposed in an intermediate part of the tool, can be pressed in, in that the connecting link hereby transfers the movement to the spring-loaded pawl which is thus released from its engagement with the keyway.
  • An object of the present invention is to provide a locking device with a locking system and a safety device which is relatively simple in construction and which is easier to operate than the known system.
  • the safety device comprises a hook which is suspended in a pivotal manner in an intermediate part of the tool, said hook having a latch part which can engage in the keyway when the shaft part of the tool is mounted in the tool holder.
  • the axis of rotation for the hook is placed in such a manner that the friction which exists between the latch part of the hook and the keyway is more or less equalised by the horizontal force which, due to the pull of gravity on the tool, will seek to draw the latch part free of the keyway. It is hereby achieved that a slight influence will be sufficient to release the securing of the tool by the hook.
  • the one end of the hook is configured as a release arm, and the axis of rotation for the hook is disposed between the release arm and the latch part.
  • the release arm ca be influenced by the intermediate part of the tool, e.g. by a part of the release arm extending out through the recess in the tool's intermediate part, or in that a part of the release arm can be influenced through the recess, e.g. by means of a tool.
  • the end of the release arm can lie more or less flush with the intermediate piece but, however, it must be positioned so that the user can influence the release arm with a finger. The safety device can thus be released by pressing the release arm in against the tool, whereby the latch part will be moved out of engagement with the keyway and into the shaft part of the tool.
  • the locking device can be configured as disclosed in claim 4, in that the release arm is disposed between the axis of rotation for the hook and its latch part, e.g. by being configured as an operating button or the like.
  • This operating button will thus be able to be operated, i.e. pressed in, from the front of the tool, i.e. that side through which the latch part of the hook projects.
  • the release arm can be configured so that it projects out from the intermediate part and can be operated directly, or it can be configured so that it lies flush with or under the surface of the intermediate part so that it can be operated by the user pressing a finger or possibly a tool into a cavity or an opening.
  • the hook can be connected with a spring which will ensure that the latch part of the hook extends out through the recess in the shaft part when the release arm is not influenced. Moreover, this spring will exercise that force which must be overcome to release the hook when the locking device is configured as disclosed in claim 2. By suitable dimensioning, it is thus possible to closely determine that force which is necessary to release the hook.
  • a recess for the hook can comprise a part which serves as a stop for the turning movement of the hook, so that the latch part can not be moved too far outside the shaft part.
  • the hook is further configured as disclosed in claim 7, whereby the latch part of the hook has an inclined surface, it is achieved that the tool can be inserted directly in the tool holder, in that due to the inclined surface the latch part upon being inserted will be pushed into the shaft part and slide into engagement with the keyway at the correct position.
  • the tool can be expedient for the tool to be provided with a longitudinal locking groove in which a locking hook of a locking plate can enter into engagement and thus establish the clamping of the tool.
  • the locking plate can be arranged so that it can tilt. around a pivot point, so that the locking hook which is disposed on the lower part will engage with the locking groove when the upper part of the locking plate is influenced by an activating element, which can be a highly-flexible hose.
  • an activating element which can be a highly-flexible hose.
  • the flexible hose will influence the locking plate uniformly over its length and, when the pressure is removed from the hose, very little force is required to induce the locking plate to move back in the open position.
  • the use of hydraulic cylinders and the like is hereby avoided, which among other things can be an advantage in cases where it is desired to avoid any form of oil escape, in that the flexible hose can be activated with e.g. compressed air or a liquid which is not contaminating.
  • a return spring can be disposed in connection with the locking plate, so that when the activation element is deactivated, the locking plate is drawn out of its engagement with the locking groove, whereby the clamping of the tool is released.
  • keyways can be configured in both sides of that channel in the tool holder which accommodates the shaft part of the tool. It is hereby achieved that a choice can be made between two different positions of the tool (turned 180° in relation to each other), which is of special significance when the tool is not symmetrical in relation to a centreline for the tool holder.
  • the tool is a bending tool 5.
  • the shown tool with tool holder form part of a not-shown machine as an elongated part which, for example, under a certain pressure can be moved downwards towards an underlying counter-part which can either be mounted in a fixed manner or possibly be moved upwards.
  • the underlying counter-part can, for example, consist of a tool holder mounted with a tool corresponding to that shown in fig. 1, but turned 180° so that the tool faces upwards.
  • the two tools, which are thus secured in each their tool holder 1, can be identical, but can naturally also be different, all depending on the actual use of the machine.
  • such a machine can be used for the forming of material under pressure, especially sheet material, in that the machine can e.g. be a power press or a bending machine as shown in fig. 1.
  • the tool holder shown in fig. 1 has a longitudinal channel or groove 2 which is used to accommodate the tool 5, a side part of said longitudinal channel being configured with a keyway 3 which, as will be described later, is used to secure the tool 5.
  • the keyway 3 is shown as a channel with a rectangular cross-section, but the keyway can be configured with any other suitable shape.
  • the tool 5 consists of a shaft part 6, an intermediate part 7 and a foot part 8.
  • the foot part of the tool is determinative for the function of the tool, and in the shown example is configured as a bending blade which can be used, for example, for the bending of sheet metal material, but it will be obvious that the tool can be configured with foot parts suitable for any form of pressing, bending, shearing, blanking operations and the like.
  • the shaft part 6 of the tool is configured in such a manner that it can be inserted with a good fit in the tool-receiving channel 2 in the tool holder 1. As is shown on fig.
  • the shaft part has a top surface 6a which abuts up against the bottom of the tool-receiving channel 2 or is possibly at a distance from this bottom, and a first side surface 6b and a second side surface 6c which lie up against the sides in the tool-receiving channel 2.
  • an auxiliary support surface 6d which abuts up against an underside of the tool holder.
  • an undercut 6e is provided between this auxiliary support surface 6d and the first side surface 6b of the shaft part. This undercut is provided for reasons of production, in that it can otherwise be difficult to produce the two adjoining surfaces 6b and 6d so that a perfect inside angle of 90° is formed.
  • the two surfaces 6b and 6d are able to be brought in tight contact with the corresponding right-angled part of the tool holder, such as shown in fig. 1.
  • the auxiliary support surface 6d can possibly be omitted.
  • a recess 9 which is configured substantially as a slot which extends parallel with the plane of the drawing in fig. 1.
  • this recess opens out in the second side surface 6c, and on the opposite side of the tool the recess opens out in the intermediate part 7.
  • a hook 12 which at its one end is configured as a latch part 14, and at its other end is configured with a release arm 15.
  • the hook is also provided with a hole 13 which is used for suspending the hook in the recess 9, in that a pivot pin or axle is led through this hole 13 and is suspended on each side of the recess 9.
  • a spring 16 which influences the hook 12 so that the latch part 14 will be pressed into the keyway 3 when the tool is inserted into the tool holder.
  • this spring 16 can be a helical spring which is retained with its one end in a blind hole in the tool, and which with its other end influences the release arm 15.
  • a stop 10 for the hook in the shaft part 6 of the tool there is provided a stop 10 for the hook, this stop being configured in the second side surface 6c immediately under the latch part 14, but which can be placed in other suitable ways. This stop 10 functions as an end stop for the rotating movement of the hook, and thus prevents the latch part 14 from moving too far out of the shaft part 6.
  • the locking device also comprises a locking system which comprises a locking plate 20 which extends along the tool holder 1 as shown in fig. 1.
  • This locking plate 20 is mounted on the tool holder 1 in such a manner that it can tilt or rotate around a pivot point 21, such as indicated in fig. 1.
  • the lower part 24 of the locking plate has a locking hook 25 which can grip in under the tool holder 1 and in a locking notch 11 in the tool 5, which locking notch 11 is shown in fig. 2.
  • the locking plate 20 stands in connection with an activation element 26 which can move the uppermost part of the locking plate in relation to the tool holder 1, so that the locking hook 25 can be pressed into the locking notch 11.
  • this activation element can, for example, consist of a tubular element 26 which is placed in a recess 4 in the tool holder.
  • This tubular element which is of a highly flexible type, is placed between the tool holder 1 and the locking plate 23 in such a manner that in the inactivated state it is pressed more or less flat, so that when influenced pneumatically or hydraulically it expands in circumference and presses the upper part 23 of the locking plate away from the tool holder.
  • a return spring 27 which, for example, can be a leaf spring which is placed in a recess or a notch in the tool holder 1 between this and the lower part 24 of the locking plate.
  • a return spring 27 which, for example, can be a leaf spring which is placed in a recess or a notch in the tool holder 1 between this and the lower part 24 of the locking plate.
  • the activation element use can be made, for example, of a tube of the type which is normally used as e.g. a fire hose.
  • fig. 2 is shown the position of the locking notch 11 on the tool 5, in that the locking notch is shown configured with sloping side surfaces which correspond to the shape of the locking hook 25 on the locking plate.
  • Fig. 2 also shows the positioning of the hook 12 in the manner in which this is mounted in the recess 9. It is also shown that immediately below the latch part 14 of the hook and in connection with the recess 9 there is configured a recess 9a which extends in the longitudinal direction of the tool 5. In this recess, an element can be inserted which can constitute the stop 10 for the hook 12. Finally, it is shown that the hook 12 is provided with a locking notch 17 which allows the locking hook 25 of the locking plate to engage with the locking notch 11 without influencing the hook 12, such as this is also seen in fig. 1.
  • the locking plate 20 is shown in perspective, and it is seen that holes 22 are provided between the upper part 23 and the lower part 24. In the shown example, two holes are provided. These holes are used in the suspension of the locking plate, so that this can tilt around the pivot point 21, which is marked in fig. 7.
  • Fig. 4 shows an alternative embodiment for the hook 12, this embodiment distinguishing itself from that shown in figs. 1 and 2 simply by the latch part 14 being configured as a strip-like part with a breadth which is considerably greater than the breadth of the hook 12. With this embodiment, there is thus achieved a better grip in the keyway 3. However, from the point of view of production technique, this embodiment requires a more complicated configuration of the recess in the tool 5. Furthermore, with this embodiment a better control of the hook in the keyway 3 is achieved when a suspended tool is displaced sideways, e.g. in order to position the tool in the correct place in the machine. With this embodiment, it can not so easily occur that the hook tilts over in the keyway and possibly get stuck.
  • FIG. 5 In fig. 5 are illustrated those forces which work on the hook 12 and especially the latch part 14 when the hook secures a tool in an upper tool holder.
  • the pivot axis for the hook is thus indicated at the point 13, and the engagement point for the latch part 14 in the keyway 3 is indicated at point 14'.
  • the point of engagement 14' can, for example, consist of the outermost edge of the keyway 3 adjacent to the tool-receiving channel 2 or of the point of the latch part, providing that it is this which first and foremost has contact with the keyway 3.
  • the hook will be influenced by the force of gravity F g on the tool.
  • This force will similarly work vertically downwards at the point 14', but since the point of engagement 14' is not lying vertically over the point 13, there will be a force F on the latch part which from the point of engagement 14' is directed towards the pivot point 13.
  • this force can be divided into two components at right-angles to each other, i.e. F g which works vertically downwards and F gv which works horizontally.
  • the horizontal distance between the pivot point 13 and the point of engagement 14' is indicated with the letter a, and it is seen that the greater the distance a, the greater will be the force F and herewith F gv.
  • the point of engagement 14' is also influenced by a frictional force F ⁇ ,which in magnitude is equal to F g times the statistical coefficient of friction ⁇ 0 , and which works in the direction opposite to F gv .
  • the frictional force F ⁇ will thus be independent on the distance a, while the oppositely-directed force F gv will increase with the distance a.
  • F gv is greater than F ⁇ , the latch part of the hook will be moved out of the keyway 3 without further influence from outside. Therefore, the distance a can be dimensioned so that it is less than or equal to that distance where F gv is equal to F ⁇ .
  • F gv and F ⁇ are equal, no force or only insignificant force is required on the hook to bring this out of its engagement with the keyway 3.
  • the spring 16 will thus also serve to determine that influence which is required to induce the hook to turn out of engagement, for a suitably comfortable level for the user, and also, especially when the two above-mentioned forces F gv and F ⁇ are approximately the same, to ensure that the hook is not unintentionally brought out of engagement by an insignificant force.
  • the advantage with the arrangement is that the manual force which must be applied in order to release a hook in practice is the same, regardless of the spatial orientation or physical weight of the tool.
  • fig. 6 is shown a cross-section of a bending tool and a tool holder corresponding to fig. 1, but with an alternative configuration of the hook and the bending tool.
  • Individual parts which are configured in the same way as shown in fig. 1 are indicated with the same reference numbers as in fig. 1, and therefore they will not be discussed in more detail here.
  • the hook, which is indicated by 12' differs from that which is shown in fig. 1, in that here the release arm 15' is not configured as a part which extends from the axis of rotation 13 towards the opposite end of the hook in relation to the latch part 14, but on the contrary extends mainly in the same direction as that end of the hook where the latch part 14 is disposed.
  • the release arm 15' can be suitably influenced from the front, in that it can thus be pushed in towards the intermediate part 7 of the tool.
  • the spring 16 will thus also be placed differently, in that as shown in fig. 6 it can be placed in a blind hole immediately behind the release arm 15'.
  • the release arm can be configured as a separate part which is rigidly connected to the remaining parts of the hook, but can relatively simply be configured as a part of the hook's connection part between the axis of rotation 13 and the latch part 14, in that this merely involves the placing of some form of operating button on the front of the hook, such as shown in fig. 6.
  • a further advantage of this embodiment is that the recess 9 in the tool, in which the hook 12' is disposed, can be configured exclusively from the front of the intermediate part 7 and shaft part 6 of the tool, unlike the configuration in fig. 1, where machining must normally also be carried out from the rear of the tool.
  • the hooks can be placed in the end pieces of a tool, in that the provision of a recess can thus be effected solely from the end of the tool.
  • the hook can be secured by a separate component which is fastened to the tool and prevents the hook from falling out. This can thus involve a plate which wholly or partly covers the recess 9 in the end piece of the tool.
  • the suspension of the locking plate 20 on the tool holder 1 is illustrated in fig. 7, which corresponds to fig. 1 but where the section is taken at a place where a securing element for the locking plate is provided.
  • Reference numbers are shown only for the most important of the elements already discussed, i.e. the tool holder 1, the tool 5, the hook 12, the stop 10 and the spring 16 for the hook, the locking plate 20, the hole 22 in the locking plate and the activation element 26.
  • a bolt 30 through the hole 22 in the locking plate is secured in the tool holder 1, in that the bolt is surrounded by a bush 31.
  • the hole 22 is configured with two diameters, i.e. partly an inner diameter and partly an outer diameter which is greater than the inner.
  • the bush 31 has an annular recess 32.
  • a tension washer 33 which at the same time secures an outer slide piece 34 and an inner slide piece 35 against the annular part of the hole 22 between the larger and the smaller diameter.
  • the outer 34 and the inner slide piece 35 are configured with co-operating surfaces which are configured with a cross-section in the form of part of a circular arc, so that the two slide pieces can be moved in relation to one another.
  • the locking plate 20 can thus describe the turning movement in that the inner slide piece 35, which turns together with the locking plate 20, during its movement can move into the annular recess 32 in the bush 31.
  • the tool When a tool 5 is to be mounted in the tool holder 1, the tool is manually placed opposite the tool-receiving channel 2, and the shaft part 6 is introduced into the channel.
  • the inclined surface on the latch 14 makes contact with the locking hook 25 on the locking plate 20 and/or the lower edge of the tool holder, the hook 12 or 12' will be turned against the spring pressure from the spring 16 so that the latch part 14 will be pushed into the shaft part of the tool.
  • the locking hook 25 on the locking plate 20 is also provided with an inclined surface, which will further facilitate this movement.
  • the latch part 14 When the shaft part 6 of the tool has been pushed so far into the channel 2 that the under part of the latch part 14 is opposite the lowermost edge of the keyway 3, the latch part 14 will be pushed into the keyway 3 by the spring 16, so that the tool 5 is now secured in the tool holder.
  • the tool can be displaced in the longitudinal direction of the tool holder until the desired position is found, in that the latch part 14 can be displaced in the longitudinal direction of the keyway.
  • the activation element 26 When the tool is in the desired position, the activation element 26 is activated so that the lower part 24 of the locking plate 20 is turned in towards the tool and the locking hook 25 is pressed into the locking notch 11.
  • the locking hook 25 and the locking notch 11 can be configured so that the tool is pressed into the tool holder 1 in such a manner that the auxiliary support surface 6d and/or the top surface 6a of the shaft part 6 is pressed against the corresponding parts of the tool holder 1.
  • the first side surface 6b of the shaft part will be pressed against the corresponding side surface in the tool-receiving channel 2, so that the position of the tool is precisely determined in relation to the tool holder.
  • the activation element 26 When the tool 5 is to be removed from the tool holder 1, the activation element 26 is deactivated, whereby the locking plate 20 will be turned by the return spring 27 so that the locking hook 25 is moved out of its engagement with the locking notch 11.
  • the tool is held in the tool holder only by the engagement of the latch 20 with the keyway 3, which is of special significance when the tool holder is one which has downwards-facing channel 2 for receiving the tool, in that here the force of gravity will naturally seek to draw the tool out of the channel.
  • the tool 5 can hereafter be handled manually, in that pressing on the release arm 15 or 15' will release the engagement of the latch part 14 from the keyway 3, so that the shaft part 6 of the tool can be led out of the channel 2.
  • the disclosed locking device comprising the locking system and the safety arrangement can be used both for a tool holder with a downwards-facing channel 2 and a tool holder with an upwards-facing channel 2.
  • one or more tools can be accommodated in a channel 2, in that the tools can be inserted in the tool holder in extension of one another.
  • a tool 5 there can be configured one or more recesses 9 with associated hooks 12 or 12'.
  • a tool is to be inserted and removed without difficulty by only one person, it is expedient that at the most there are two hooks per tool.
  • the locking plate 20 can be of such a length that it corresponds to the whole length of the tool holder 1, in that the advantage achieved hereby is that a tool of a smaller length than the whole of the tool holder can be inserted, secured and locked at any random place along the tool holder. Use can be made, however, of locking plates of a smaller length, and such locking plates of a smaller length can be brought together singly to form a desired length.
  • the tool-receiving channel 2 in the tool holder can have a keyway 3 in both ends of the channel, so that the tool can be inserted in two different positions.
  • a locking notch 11 must similarly be configured on each side of the tool for the securing of the tool by means of the locking plate 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Gripping On Spindles (AREA)
  • Machine Tool Sensing Apparatuses (AREA)

Claims (12)

  1. Arretiervorrichtung zum Befestigen eines Werkzeugs in einer Maschine, wie beispielsweise einer Biegemaschine, einer Pressmaschine oder dergleichen, wobei das Werkzeug (5), beispielsweise ein Biegewerkzeug, ein Presswerkzeug oder dergleichen, in einem Werkzeughalter (1) in der Maschine befestigt ist und das Werkzeug (5) einen Schaftteil (6) aufweist, der in einer Werkzeugaufnahmenut (2) in dem Werkzeughalter (1) aufgenommen ist und darin teilweise mittels einer Sicherheitsanordnung, die mit einer Keilnut (3) in dem Werkzeughalter (1) zusammenwirkt, und teilweise mittels eines Arretiersystems befestigt ist, dadurch gekennzeichnet, dass die Sicherheitsanordnung einen Haken (12, 12') umfasst, der schwenkbar in einem Mittelteil (7) des Werkzeugs (5) angebracht ist, wobei der Haken (12) einen Verriegelungsteil (14) aufweist, der in die Keilnut (3) eingreifen kann, wenn der Schaftteil (6) des Werkzeugs (5) in dem Werkzeughalter (1) angebracht ist.
  2. Arretiervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Reibung in der Sicherheitsanordnung vollständig oder teilweise ausgeglichen wird, indem die Schwenkachse (13) für den Haken (12) in dem Werkzeug in einem horizontalen Abstand (a; Fig. 1 und 5) zum Punkt des Eingriffs (14') des Verriegelungsteils (14) in der Keilnut (3) angeordnet wird, durch den eine horizontale Reibkraft (Fµ), die zwischen der Keilnut (3) und dem Verriegelungsteil (14) wirkt, im Wesentlichen durch eine entgegengesetzt gerichtete Kraft (Fgw) auf den Verriegelungsteil neutralisiert wird, die durch den Zug der Schwerkraft an dem Werkzeug bewirkt wird.
  3. Arretiervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Haken (12) um eine Schwenkachse (13) herum schwenkbar aufgehängt ist, die zwischen dem Verriegelungsteil (14) für den Haken und einem Lösearm (15) für den Haken angeordnet ist, dass der Verriegelungsteil (14) in dem Bereich für eine Öffnung einer Aussparung (9) in dem Schaftteil (6) des Werkzeugs nach außen angeordnet ist und dass der Lösearm (15) in dem Mittelteil (7) des Werkzeugs angeordnet ist.
  4. Arretiervorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Lösearm (15') für den Haken (12') in dem Mittelteil (7) des Werkzeugs zwischen einer Schwenkachse (13) für den Haken (12') und dem Verriegelungsteil (14) für den Haken angeordnet ist, und dass der Lösearm (15') möglicherweise mit einem Verbindungsgelenk zwischen der Schwenkachse (13) und dem Verriegelungsteil (14) des Hakens zusammenfällt.
  5. Arretiervorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass der Haken (12, 12') mit einer Federanordnung (16) verbunden ist, die den Haken mit einer Federkraft um die Schwenkachse (13) herum beeinflusst, so dass der Entriegelungsteil (14) so beeinflusst wird, dass er sich durch die Öffnung der Aussparung in dem Schaftteil (6) nach außen hindurch heraus bewegt.
  6. Arretiervorrichtung nach einem der mehreren der Ansprüche 1-5, dadurch gekennzeichnet, dass das Werkzeug (5) in Verbindung mit einer Aussparung (9) für den Haken einen Teil umfasst, der als ein Anschlag (10) für den Haken (12, 12') wirkt, so dass die Bewegung des Hakens, insbesondere die Bewegung des Verriegelungsteils (14) außerhalb des Schaftteils (6), eingeschränkt wird.
  7. Arretiervorrichtung nach einem oder mehreren der Ansprüche 1-6, dadurch gekennzeichnet, dass der Verriegelungsteil (14) des Hakens eine äußere Fläche aufweist, die in Richtung der oberen Fläche (6a) des Schaftteils nach innen auf den Schaftteil (6) zu geneigt ist.
  8. Arretiervorrichtung nach einem oder mehreren der Ansprüche 1-7, dadurch gekennzeichnet, dass das Werkzeug mit einer Längs-Arretierkerbe (11) an dem Schaftteil (6) oder an dem Mittelteil (7) versehen ist und dass das Arretiersystem eine Arretierplatte (20) umfasst, die schwenkbar aufgehängt ist und einen Arretierhaken (25) aufweist, der in Eingriff mit der Längs-Arretierkerbe eintreten kann, so dass das Werkzeug (5) sicher in dem Werkzeughalter (1) arretiert ist.
  9. Arretiervorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Arretierplatte (20) einen unteren Teil (24), an dem der Arretierhaken (25) ausgebildet ist, sowie einen oberen Teil (23) aufweist, dadurch, dass zwischen dem oberen Teil (23) und dem unteren Teil (24) ein Schwenkpunkt (21) für die Arretierplatte (20) ist und dadurch, dass der obere Teil (23) durch ein Aktivierungselement (26) beeinflusst werden kann, das die Form eines flexiblen Schlauchs hat, der sich über die gesamte Länge der Arretierplatte erstreckt, so dass der Arretierhaken (25) in die Längs-Arretierkerbe (11) des Werkzeugs gedrückt wird.
  10. Arretiervorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Arretiersystem eine Rückstellfeder (27), vorzugsweise in Form beispielsweise einer Blattfeder, umfasst, die zwischen dem unteren Teil (24) der Arretierplatte und dem Werkzeughalter (1) angeordnet ist, und dadurch, dass die Rückstellfeder (27) die Arretierplatte (20) so beeinflussen kann, dass der Arretierhaken (25) aus der Arretierkerbe (11) herausbewegt wird.
  11. Arretiervorrichtung nach einem oder mehreren der Ansprüche 1-10, dadurch gekennzeichnet, dass das Werkzeug (5) zwei oder mehr Haken (12) umfasst, die im Wesentlichen den gleichen Aufbau haben und die in der Längsrichtung des Werkzeugs verteilt sind.
  12. Arretiervorrichtung nach einem oder mehreren der Ansprüche 1-11, dadurch gekennzeichnet, dass die Werkzeugaufnahmenut (12) eine Keilnut (3) an beiden Seiten enthält und dadurch, dass jede der Keilnuten unabhängig mit dem Haken (12) oder den Haken der Sicherheitsanordnung zusammenwirken kann.
EP99955845A 1998-11-26 1999-11-18 Verriegelungseinrichtung zum festlegen eines werkzeugs an einer maschine Expired - Lifetime EP1133368B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK199801562A DK199801562A (da) 1998-11-26 1998-11-26 Låseindretning til fastholdelse af et værktøj i en maskine
DK156298 1998-11-26
PCT/DK1999/000635 WO2000030781A1 (en) 1998-11-26 1999-11-18 Locking device for securing a tool in a machine

Publications (2)

Publication Number Publication Date
EP1133368A1 EP1133368A1 (de) 2001-09-19
EP1133368B1 true EP1133368B1 (de) 2003-11-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99955845A Expired - Lifetime EP1133368B1 (de) 1998-11-26 1999-11-18 Verriegelungseinrichtung zum festlegen eines werkzeugs an einer maschine

Country Status (6)

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EP (1) EP1133368B1 (de)
AT (1) ATE253420T1 (de)
AU (1) AU1263800A (de)
DE (1) DE69912634D1 (de)
DK (1) DK199801562A (de)
WO (1) WO2000030781A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10086424B2 (en) * 2015-10-07 2018-10-02 Admc Holding, Llc Helix tool locking system
US9962749B2 (en) * 2016-09-23 2018-05-08 Mate Precision Tooling, Inc. Press brake tool safety latch mechanism
US20220362826A1 (en) * 2021-05-13 2022-11-17 Accurpress America Inc. Press brake safety latch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779122A (en) * 1972-07-24 1973-12-18 Whitney Corp W Punch press with assembly locking mechanism
NL9100034A (nl) * 1991-01-10 1992-08-03 Wila Maschf Bv Kantpersgereedschap, en een adaptor en een kantpers daarvoor.

Also Published As

Publication number Publication date
ATE253420T1 (de) 2003-11-15
DE69912634D1 (de) 2003-12-11
WO2000030781A1 (en) 2000-06-02
DK199801562A (da) 2000-05-27
AU1263800A (en) 2000-06-13
EP1133368A1 (de) 2001-09-19

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