EP2701860A1 - Tool holder for press brake - Google Patents
Tool holder for press brakeInfo
- Publication number
- EP2701860A1 EP2701860A1 EP12728364.6A EP12728364A EP2701860A1 EP 2701860 A1 EP2701860 A1 EP 2701860A1 EP 12728364 A EP12728364 A EP 12728364A EP 2701860 A1 EP2701860 A1 EP 2701860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- receiving body
- tool
- tool holder
- holding device
- adjusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- 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 method according to claim 1 and to a tool holder on a press beam according to claim 6.
- the object of the invention is to further facilitate the bending tool change on a press brake.
- the object of the invention is achieved by a method according to claim 1 or a tool holder according to claim 6.
- the fact that the adjusting device and the holding device are operatively connected, ie coupled, by means of a coupling arrangement ensures that an inserted bending tool is reliably fixed in the working position of the receiving body and further easy removal of a tool without additional measures is possible in the change position.
- the tool clamping is to be released in the conventional machines in a first step and then lower the tool in the vertical direction, which can be a heavy physical stress at higher tool weights since the tool is released against the weight force as soon as the tool clamping or tool locking is released lowering, which is an enormous static muscle load.
- the holding section of a bending tool is released only in the change position of the receiving body by the holding device is deactivated and differs by the pivoting of the receiving body, the direction of the weight of the removal direction of the bending tool.
- the holding device is designed so that a bending tool located in the receiving body is fixed in the working position such that forces acting on the bending tool, such as weight forces and forces resulting from a forming operation are transmitted without relative movement of the bending tool within the tool holder.
- This fixation can be done non-positively, for example, by a clamping device and can also be done alternatively or additionally a positive fixation of the bending tool in the receiving body.
- a positive fixing is prescribed in order to prevent a bending tool from falling out of the tool holder.
- An advantageous variant of the method consists in the embodiment according to claim 2, whereby in the adjustment position of the receiving body, a position adjustment of a bending tool can be performed.
- the fixation by the holding device is thereby partially canceled in the adjustment position, with a given between holding device and bending tool form fit is maintained, so a removal or falling out of the bending tool from the tool holder is not possible.
- Any existing clamping is canceled in the adjustment position or reduced so that a shift within the tool cutting parts is possible.
- An implementation according to claim 3 may also be advantageous, whereby the current position or position of the receiving body can be easily calculated by a machine control and the drives driven therefrom for carrying out the linear movement and the subsequent pivoting movement.
- the linear movement is advantageously carried out over a relatively short displacement of up to a few centimeters, while the subsequent pivoting movement is performed by a pivot angle, which allows easy insertion or removal of a bending tool.
- Such a sequence of movements can with simple guide arrangements and possibly acting Versteilantriebe be accomplished and realized by structurally simple linear guides and pivot bearings.
- the process implementation according to claim 4 causes the adjustment movement in the first phase either vertically upwards or vertically downwards, and after this phase, the adjustment of the bending tools within the tool interface is possible, including a prior pivoting of the tool holder or the receiving body is not required is.
- the pivoting of the receiving body in the change position is thus carried out only in the event that a bending tool to be used or removed. For a pure adjustment, the adjustment is limited to the linear movement to achieve the adjustment position.
- Carrying out the method according to claim 5 is advantageous for an operator since a bending tool does not have to be removed directly when the change position is reached, but rather the bending tool is provided to some extent in the released position with the holding device deactivated, without being secured by the user or some handling device would have to be.
- a groove-like tool interface this is the case if the bending tool canted due to its own weight in the tool interface and thereby despite a disabled holding device, without a positive fit is given, a non-positive fixation in the receiving body. This is the case, for example, when the groove-like tool interface points in a horizontal direction or in a slightly rising direction.
- the object of the invention is achieved as already mentioned by a tool holder according to claim 6, wherein the coupling between the adjusting movement and the activation or deactivation of the holding device is effected by a coupling arrangement which brings the adjusting device into operative connection with the holding device.
- the coupling arrangement may comprise mechanical components and alternatively or additionally also control components, wherein in both cases, the coupling of Ver adjusting movement and tool fixing or tool unlocking is achieved.
- a form-fitting fixing of the bending tool in the receiving body is possible by the positive locking element, the Increased security for an operator causes.
- the recess on the holding portion often has a V-groove-like shape into which a wedge-shaped portion of a positive locking element can be introduced.
- the positive locking causes the holding portion can not escape from the groove-like tool interface and allows at a reduced clamping force adjusting the bending tool within the tool holder in the longitudinal direction of the groove-like tool interface.
- the coupling function can be effected by structurally simple means by the contact element virtually scans the position of the receiving body relative to the pressing beam and converts an adjustment of the contact element in an adjustment of the positive locking element.
- This conversion can be realized by various types of motion gears in the kinematic sense. Between used components, push joints, swivel joints, bending joints, rolling joints, etc. can be used.
- the contact element may be designed as a pressure plate which is pressed in the working position between the receiving body and the pressing beam.
- the embodiment of the tool holder according to claim 11 ensures that the receiving body or the pressure plate arranged between the receiving body and the pressing beam during a bending operation, even when acting transversely to the direction force components exactly retains the position and no such forces acting on the adjustment or from this must be transferred.
- Corresponding projections can, for example, by Conical projections may be formed, which are integrally arranged on the surface of the press beam or the receiving body, or, for example, as a screw elements which project through a component and project with a tapered approach to a reference surface to the outside.
- the coupling of the adjusting arrangement and the holding device can be designed according to claim 12 so that thereby a defined dependence between the adjustment and the position of the contact element is effected relative to the receiving body.
- a steady increase in the swivel angle can bring about, for example, a steady adjustment of the contact element and thus also of the positive-locking element.
- the form-locking element remains substantially in engagement with the holding portion of the bending tool and only at the end of the adjustment at a large tilt angle in the vicinity of the change position release from the positive connection element is effected.
- the tool holder according to claim 14 may be designed with two or more clamping elements and the contact force acting on the contact element from the pressing bar uniformly distributed over the distribution lever on the individual active clamping elements.
- An embodiment of the tool holder according to claim 15 allows, despite the use of a structurally and control technology simple Versteilantriebes in the form of a linear actuator a cost-effective way to effect the adjustment of the receiving body.
- the linear movement can also be converted into the pivoting movement of the receiving body. Due to the embodiment according to claim 16, the adjustment is easy to implement, since the movement of the two pivot points causes in a simple manner and can also be changed.
- a synchronous linear movement of the two articulation points a linear rectilinear adjustment of the receiving body is easily achievable and can be used by fixing one of the two articulation points of this as a pivot axis for the pivotal movement of the receiving body.
- the development according to claim 17 is a structurally simple way to realize a combination of a linear movement and a pivoting movement.
- these can also comprise control engineering components according to claim 18 or be realized by such, whereby for a user the same advantageous functionality of a simplified and easier tool change is given.
- the embodiment according to claim 19 allows an operator to remove the tool approximately in the horizontal direction from the tool holder or to insert into this and ensures this change position that a Biegewerkzug remains in the change position despite deactivated holding device in the tool interface.
- a horizontal alignment of the tool interface is additionally advantageous for an automated bending tool change by means of a handling device.
- the embodiment according to claim 20 makes it possible to spend a bending tool even without the receiving body in changing position to insert or remove in the tool holder.
- the actuating means acts directly or indirectly on the
- Clamping device or form-locking device and decouples them in a sense of the adjustment.
- a tool holder according to the invention can also be embodied advantageously on a pressing beam such that the adjusting device of the tool holder is integrated in the pressing beam.
- Fig. 1 shows a section through a tool holder according to the invention in working position
- FIG. 2 shows a section through a tool holder according to FIG. 1 in a change position
- FIG. 3 shows a section through a tool holder in a further embodiment in FIG
- FIG 4 shows a section through a tool holder according to FIG 3 in changing position.
- FIG. 5 shows a section through a tool holder in a further embodiment
- FIG. 6 shows a section through a tool holder in a further embodiment
- FIG. 7 shows a further possible embodiment of a coupling arrangement on a tool holder according to the invention.
- FIG. 8 shows a view of the coupling arrangement in a tool holder in a section along line VIII-VIII in FIG. 5.
- FIG. 1 shows a sectional view of a bending tool 1 which is inserted and fixed in a tool holder 2.
- the tool holder 2 has for this purpose a groove-like tool interface 3, in which a holding portion 4 of the bending tool 1 is inserted.
- the tool holder 2 comprises a receiving body 5, which has the tool interface 3.
- the receiving body 5 extends along the longitudinal direction of a press beam 6 of a vertical press brake, not shown. In Fig. 1, the vertical working plane 7 is shown.
- the holding device 8 can in this case use a frictional fixing, for example by a clamping device, but preferably comprises a form-fitting element 9 which is adjustable in a recess 10 on the holding section 4 of the bending tool 1. As long as the interlocking element 9 protrudes into the recess 10, a bending tool 1 can not be removed in the removal direction 11 from the tool interface 3.
- Fig. 1 shows the positive-locking element in a fixing position 12, in which it projects into the recess 10 of the holding portion 4.
- the positive-locking element 9 in the activated fixing position 12 prevents removal or falling out of the bending tool 1 from the tool interface 3 due to its positive-locking action.
- the receiving body 5 is located in Fig. 1 in a working position 13, in which it rests with its upper outer side 14 on the undersides of the press bar 6 and forming forces pressing beam 6 and bending tool 1 can transmit.
- Fig. 2 shows the tool holder 2 according to FIG. 1, wherein the receiving body 5 is adjusted by means of an adjustment 15 in a different from the working position 13 of FIG. 1 change position 16.
- the adjusting device 15 thus serves to transfer the receiving body 5 from the working position 13 in an adjustment 17 in the change position 16.
- the adjusting movement 17 in this case comprises a pivoting movement 18, through which the cut of the position of the tool 3 dependent removal direction 11 is changed by a pivot angle 19.
- the removal direction 11 corresponds to an approximately horizontal direction. That is, a bending tool 1 is moved when removing from the tool holder 2 in the horizontal direction to the left in the removal direction 11 and moves when inserted into the tool holder 2 to the right in a not specifically shown insertion direction.
- the adjusting device 15 comprises a pivoting arrangement 20, which in the embodiment according to FIGS. 1 and 2 comprises a simple rigid pivot axis 21 on the pressing beam 6, around which the receiving body 5 is pivotably mounted is.
- the receiving body 5 is coupled to an adjusting drive, not shown, which introduces the adjustment forces or Verstellmomente required for adjustment in the receiving body 5.
- a coincident with the pivot axis 21 pivot shaft may be provided, which is connected to the receiving body 5 torque-resistant and which is driven by a lever or a motor.
- the receiving body 5 and a possibly inserted therein bending tool 1 remains in the change position 16 until it is moved back to the working position 13.
- the position assurance in the change position 16 as well as in the working position 13 can be done by the adjustment drive by this is carried out self-holding or by an independent position assurance.
- the position of the pivot axis 21 and the outer shape of the pressing beam 6 and receiving body 5 are chosen so that the Pivoting movement 18 can be performed freely, with an optional pivoting on both sides of the working level 7 can also be provided.
- the holding device 8 is deactivated in order to enable the setup, whereby a bending tool 1 can be removed in the removal direction 11 and inserted into the tool interface 3 opposite thereto.
- a clamping device the clamping forces are released or reduced so that a removal and insertion of a bending tool 1 is possible.
- this is spent from the fixing position 12 shown in FIG. 1 in a release position 22 shown in FIG. 2, in which it does not protrude into the recess 10 on the holding portion 4 of the bending tool 1 and this in the Movement in the tool interface 3 not hindered.
- the adjusting device 15 is coupled to the holding device 8 such that the holding device 8 is activated in the working position 13 of the receiving body 5 and is deactivated in the change position 16.
- adjusting device 15 and holding device 8 are operatively connected by means of a coupling arrangement 23.
- the fitting of bending tools 1 is substantially facilitated by the tool holder 2 according to the invention, since the coupling arrangement 23 causes the holding device 8 is activated in the working position 13 and a bending tool 1 is fixed for a forming operation on the pressing beam 6 and the holding device 8 in the change position 16th is automatically deactivated, whereby a tool change can take place.
- the tool change is substantially facilitated by a given between working position 13 and change position 16 swivel angle 19.
- the holding device 8 If in a conventional tool holder, which is not pivotable, the holding device 8 is deactivated for a tool change, the weight of the bending tool 1 is suddenly effective and this must be collected by the user or a suitable support structure. By the vertical removal direction 11 further bending tool 1 must then be controlled and lowered sensitively, to which a vertically upwardly acting support force is required, which must correspond to the weight force at a slow movement about. This requires of an operator high static muscle forces that still need to be dosed sensitively. The same request is for a handling device, for example an industrial robot which is used for an automated tool change, valid.
- the coupling arrangement 23 can be based on mechanical operation or else on control technology operation.
- Fig. 1 and 2 is as an exemplary embodiment of a mechanical coupling between the adjusting device 15 and the holding device 8, a contact element 24 on the receiving body 5 adjustably mounted, which cooperates with the pressing beam 6, in which it can scan the relative position of the receiving body 5 to the pressing beam 6 and an adjustment of the contact element 24 causes an activation or deactivation of the holding device 8, in which the adjusting movement is mechanically transmitted to the mold closing element 9.
- Fig. 1 shows the receiving body 5 in working position 13, in which the outer side 14 of the receiving body 5 rests against the underside of the press bar 6.
- the contact element 24, which may be, for example, a simple rounded bolt in a bore in the receiving body 5, is pressed into the interior of the receiving body 5 and this position is transferred to the fixing position 12 of the positive locking element 9.
- the contact element 24 is connected to the positive-locking element 9 with transmission elements (not shown).
- Fig. 2 shows the receiving body 5 in changing position 6, in the the outer surface 14 does not abut the pressing beam 6.
- the contact element 24, which is resiliently mounted in the receiving body 5, can thereby emerge from this, wherein this position of the contact element 24 is transferred to the release position 22 of the positive-locking element 9.
- the same functionality of the automatic activation or deactivation of the holding device 8 can also be achieved in the case of a frictionally-acting holding device 8 without a positive-locking element 9, but can be achieved by a clamping element.
- This can be effected by slightly withdrawing or relieving the interlocking element 9, whereby the rigid
- Fixing in the tool interface 3 can be repealed.
- Such an intermediate position of the receiving body 5 may be referred to as adjustment position 25, which is indicated in Fig. 2 in dotted lines.
- This controlled influencing of the holding device 8 can be brought about, for example, by setting the displacement path of the contact element 24 relative to the receiving body 5 by a mechanical control element 26 in relation to the currently prevailing swivel angle 19.
- the control is formed in the embodiment according to FIGS. 1 and 2 by the outer surface 27 of the press bar 6, which by appropriate shaping the desired relationship between
- the outer surface 27 may be shaped in the form of a suitable cam.
- control lever which connects the pressing beam 6 to the holding device 8 and converts the adjusting movement 17 of the receiving body 5 into an adjusting movement of the form-locking element 9.
- the control lever is attached to the holding device 8 and at a distance from the pivot axis 21 articulation point on the pressing beam 6. 1 and 2 further show a recess 28 on the underside of the press bar 6, which cooperates in the working position 13 of the receiving body 5 with a projection 29 on the outer side 14 of the receiving body 5. This serves to secure the position of the receiving body 5 during the possible occurrence of forming forces which are oriented transversely to the working plane 7 and serves to relieve the adjusting device 15, which otherwise would have to contribute to the transmission of force.
- Fig. 1 is further shown as an alternative to the mechanical coupling arrangement 23 a dash-dotted lines control engineering coupling assembly 23 in which the position or position of the receiving body 5 by means of a position sensor 30, for example, a rotary encoder in the pivot axis 21 is detected and a control device 31st is provided, which outputs control signals to an actuator 32 of the holding device 8 in dependence on the determined position of the receiving body 5. If the working position 13 of the receiving body 5 is detected by the position sensor 30, the holding device 8 is activated by means of the actuator 32, which acts in particular on the interlocking element 9, while disabled at change position 16 of the receiving body 5, the holding device 8 is deactivated by the control device 31 becomes.
- the fixed part of the tool holder 2 illustrated in the figures as a pressing beam 6 can also be a base part detachably fastened to the actual pressing beam of a press brake, which can be removed from the pressing beam together with the receiving body 5 when the tool holder 2 is replaced.
- FIG. 3 and 4 a further embodiment of a tool holder 2 is shown in a schematic sectional illustration, wherein in FIG. 3 the working position 13 of the receiving body 5 and in FIG. 4 the change position 16 of the receiving body 5 is shown.
- the adjusting movement effected by the adjusting device 15 is a pure pivotal movement 18 due to the pivot axis 21 which is rigid on the pressing beam 6, the adjusting device 15 effects a displacement movement 17 in FIGS. 3 and 4 , which is composed of a linear movement 33 and a pivoting movement 18.
- This composite adjusting movement 17 is achieved in that two spaced-apart articulation points 34 and 35 are arranged on the receiving body 5, which are guided or driven by the adjusting device 15 in a suitable manner.
- the two articulation points 34 and 35 are adjusted in parallel direction and by the same distance, whereby the linear movement 33, that is, a translational movement is effected.
- the first articulation point 34 is fixed in its position, while the second articulation point 35 is guided on a circular path about the first articulation point 34.
- the first articulation point 34 thereby forms a pivot axis 21 for a relative pivoting movement 18 of the second articulation point 35 and thus also the receiving body 5.
- the left articulation point 34 is fixed at the end of the linear movement 33 and in consequence the right articulation point 35 on a circular path pivoted around this, creating a
- Pivoting movement of the receiving body 5 is caused to the left.
- a pivoting movement to the right can also be effected, in which the right articulation point 35 is fixed and the left articulation point 34 is guided around this on a circular path. If the linear movement 33 is omitted, the adjusting movement 17 corresponds to the simple pivoting movement 18 in FIGS. 1 and 2.
- the adjusting movement 17 can also comprise a pivoting movement 18 'which pivots the receiving body 5 to the right in an alternative change position 16' with respect to the working plane 7, whereby a tool change from the other machine side is possible.
- This optional pivoting in both directions with respect to the working plane 7 is made possible by appropriate design of the adjusting device 15.
- the articulation point 34 which is left with respect to the working plane 7, forms a first pivot axis 21 and the articulation point 35, which is the right articulation point 35, a second pivot axis 36 either the left pivot axis 21 or the right pivot axis 36 to achieve the pivot angle 19.
- the adjusting device 15 based on structurally simple to implement linear guides, by means of which the articulation points 34 and 35 are moved.
- the left articulation point 34 is guided by means of a first linear guide 37 relative to the pressing beam 6 and the right articulation point 35 is guided by means of a second linear guide 38 relative to the pressing beam 6.
- the linear guide 37 can For example, be structurally very simple formed by a straight guide rod 39 which is slidably mounted in a bore 40 in the pressing beam 6 and is pivotally connected at its lower end to the pivot point 34.
- the bore 40 advantageously runs parallel to the working plane 7, but could also have a different direction. A displacement of the guide rod 39 in the bore 40 thus causes a linear movement of the left pivot point 34.
- the right second linear guide 38 is also formed for example by a guide rod 39 and a bore 40 in the pressing beam 6.
- a steering lever 41 is interposed between the lower end of the right guide rod 39 and the second pivot point 35.
- other possibilities are given for the second pivot point 35 in addition to the given by the linear guide 38 degree of freedom in the working direction 7 to provide a degree of freedom transversely thereto, for example by the pivot point 35 is not fixed to the receiving body 5 but for example in a backdrop transverse to the direction of Linear guide 38 is guided.
- FIG. 3 and 4 further show a possible embodiment of the holding device 8, as well as the coupling arrangement 23, with which the holding device 8 can be activated or deactivated in dependence on the position of the receiving body 5.
- the holding device 8 summarizes in the illustrated embodiment, a positive locking element 9, which engages in the working position 13 (see FIG. 3) in a recess 10 on the bending tool 10 and this fixed in the tool holder 2 and in the change position 16 (see FIG. 4). out of the recess in the release position 22 is adjusted and a bending tool 1 releases.
- the contact element 24 is formed in this embodiment by a pressure plate 42 which is mechanically coupled via the coupling arrangement 23 with the positive-locking element 9.
- the pressure plate 42 is pressed in working position 13 from the receiving body 5 against the pressing beam 6 by the adjusting device 15 biases the receiving body 5 in the working position 13 in the direction of the press beam. If the receiving body 5 is released by means of the adjusting device 15 from the pressing beam 6, the pressure plate 42 is brought by a biasing member 43, for example in the form of a compression spring in distance from the receiving body 5 and thereby the positive-locking element 9 is moved from the fixing position 12 in the release position 22. Alternatively, a biasing member 44 may also act on the interlocking element 9, in which it biases this in the release position 22.
- the activation or deactivation of the holding device 8 can also take place such that an adjustment position is assumed in an intermediate position between working position 13 and release position 16, in which a displacement of bending tools 1 in the longitudinal direction the groove-like recess 3 is possible.
- FIG. 5 shows a further embodiment of the tool holder 2, which is possibly independent of itself, wherein the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1-4. In order to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS. 1-4.
- the adjusting device 15 corresponds in the exemplary embodiment according to FIG. 5 approximately to the mechanism shown in FIGS. 3 and 4 in which two articulation points 34 and 35 are distanced transversely to the working plane 7 and which are guided by means of two linear guides 37 and 38 arranged in the pressing beam 6 ,
- the left linear guide 37 between the guide rod 39 and the left pivot point 34 a steering lever 45 which is connected at the lower end of the guide rod 39 with a hinge 46.
- This joint 46 is deactivated in the illustrated embodiment by means of a locking pin 47, which passes both the left guide rod 39 and extends into the left steering lever 45.
- the locking pin 47 thus prevents pivotal movement of the second steering lever 45 in the joint 46 and the left pivot point 34 is adjustable only on a straight line.
- the right articulation point 35 is, as already described with reference to FIG. 4, movable along a straight line and a further lowering of the right guide rod 39 causes after fixing the left articulation point 34 via the steering lever 41 pivotal movement of the second articulation point 35 to the left fixed articulation point 34th and thus a pivoting movement of the receiving body 5.
- the two guide rods 39 of the linear guides 37 and 38 are driven by a linear actuator 48, for example in the form of a hydraulic cylinder, via a drive plate 49, a downward movement on a collar 50 on the right guide rod 39th transmits and transfers its upward movement via a paragraph 51 on a collar 52 on the left guide rod 39.
- the downward movement of the left guide rod 39 is thereby blocked by means of a stop element 53, which thereby defines the end of the linear movement 33.
- the right guide rod 39 is thus driven, which also carries the left guide rod 39 up to the stop element 53 via the receiving body 5.
- the return to the working position 13 is carried out by lifting the drive plate 49, whereby the receiving body 5 can swing down due to its own weight in the working position 13, while the right guide rod 39 pushes up and in succession by lifting the collar 52 on the paragraph 51, thereby the left guide rod 39 is lifted together with the receiving body 5 and the right guide rod 39 and is pressed in the working position 13 against the pressing bar 6.
- the position of the contact element 24 in the form of the pressure plate 42 by means of a control element 26 in the form of a control cam 54 in relation to the pivot angle 19 is set.
- the control cam 54 has a variable radius, wherein in the illustrated embodiment, the minimum radius 55 is achieved at a pivot angle of 19 of about 90 °.
- the exemplary embodiment according to FIG. 5 is also distinguished by the fact that the linear guides 37 and 38 are designed symmetrically to the working plane 10 and furthermore by pivoting the stop element 53, the driver disc 49 and the locking pin 47 on the right side, the pivoting direction from the left to can be changed to the right.
- This can also take place in that the two linear guides 37 and 38 each receive their own drives, and the deactivation of the steering levers 41 or 45 at the lower end of the guide rods 39 by means of a locking bolt 47 can also be optionally.
- the adjusting device 15 can therefore also allow opposing pivoting movements 18, 18 ', whereby changing positions 16, 16' can be assumed on both sides of the working plane 7.
- FIG. 6 shows a further embodiment of the receiving body 5, which is possibly independent of itself, as it can be used in a tool holder 2.
- it is suitable for use with an adjusting device 15 according to FIG. 5.
- the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1-5. In order to avoid unnecessary repetition, reference is made to the detailed description in the preceding FIGS. 1-5.
- FIG. 6 shows an alternative embodiment of the holding device 8, which is activated or deactivated by means of the contact element 24, here again in the form of a pressure plate 42.
- the form-fitting element 9 here consists of a clamping strip 56, which extends in the longitudinal direction of the groove-like tool interface 3 and is pivotally mounted about a pivot point 57 in the receiving body 5.
- the fixing of the holding section 4 in the tool interface 3 via spring tongues 58, which are generated by parallel cuts in the terminal block 56.
- the clamping strip 56 or the individual spring tongues 58 have projections which can be adjusted into the recess 10 of the bending tool 1.
- the adjustment is effected by a wedge member 59 which also extends in the longitudinal direction of the groove-like tool interface 3 and is vertically adjusted by the contact element 24, wherein a wedge surface 60, the vertical adjustment of the wedge member 59 in a
- the articulation points 34 and 35 are, as in the embodiment according to FIGS. 3, 4 and 5 to Anlenkforts etches 61, which distance the pivot points 34, 35 from the receiving body 5 and thereby the left pivot point 34, which after the end of the linear movement 33rd serves as a pivot axis 21, can lie in the working position within the press bar 6.
- FIG. 7 shows yet another embodiment of a holding device 8, which is similar to the holding device 8 shown in FIGS. 3 and 4 and in which an adjustment of a contact element 24 causes a displacement of the form-fitting element 9.
- an actuating element 62 is arranged in the pressing beam 6, the actuation, for example by pulling, the same effect on the holding device 8 and the contact element 24 has as an adjustment of the receiving body 5. This allows a bending tool 1 regardless of the position of the receiving body 5 relative to the press bar 6 are removed by the additional actuator 62 from the tool interface 3.
- Such an actuating element 62 may alternatively also be provided on the receiving body 5, wherein this can also temporarily deactivate the holding device 8, independently of the position of the receiving body 5, if necessary.
- FIG. 8 shows a section through a receiving body 5 with a further embodiment of the holding device 8.
- the section in FIG. 8 corresponds to a section along the line VIII-VIII in FIG. 5.
- the movement of the contact element 24 takes the form of a pressure plate 42 via force application points 64 and downstream distribution lever 65 to the individual form-fitting elements 9, here in the form of clamping elements 66, distributed forwarded.
- An inventive tool holder 2 can also be combined with bending tools 1, which themselves have an integrated safety lock with an actuation directly on the bending tool 1, wherein the tool change can also be substantially facilitated.
- Bending tool 36 pivot axis
- Adjustment device 50 collar
- Coupling arrangement 58 spring tongue
- Position sensor 65 Distributor lever
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT6002011A AT510969B1 (en) | 2011-04-29 | 2011-04-29 | TOOL HOLDER FOR ABKANTPRESSE |
PCT/AT2012/050057 WO2012145781A1 (en) | 2011-04-29 | 2012-04-26 | Tool holder for press brake |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2701860A1 true EP2701860A1 (en) | 2014-03-05 |
EP2701860B1 EP2701860B1 (en) | 2017-04-05 |
Family
ID=46320705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12728364.6A Not-in-force EP2701860B1 (en) | 2011-04-29 | 2012-04-26 | Tool holder for press brake |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2701860B1 (en) |
AT (1) | AT510969B1 (en) |
WO (1) | WO2012145781A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPC20130024A1 (en) * | 2013-09-13 | 2015-03-14 | Rolleri S P A | DEVICE FOR LOCKING TOOLS IN A FOLDING PRESS |
US9555456B2 (en) | 2014-04-26 | 2017-01-31 | Wilson Tool International Inc. | Dynamic clamp and tool holders therefor |
US10189067B2 (en) | 2015-05-27 | 2019-01-29 | Wilson Tool International Inc. | Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly |
US10300518B2 (en) | 2015-05-27 | 2019-05-28 | Wilson Tool International Inc. | Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly |
AT518260B1 (en) * | 2016-02-17 | 2017-09-15 | Trumpf Maschinen Austria Gmbh & Co Kg | press brake |
CN106734579B (en) * | 2016-11-30 | 2018-03-27 | 盐城工学院 | A kind of Height Adjustable connection handle |
CN107537941B (en) * | 2017-10-27 | 2023-10-17 | 无锡隆盛科技股份有限公司 | Closing-in tool for motor rear cover of electric EGR valve |
NL2026128B1 (en) * | 2020-07-24 | 2022-03-28 | Wila Bv | Clamping system for a press brake having a first biasing means acting on an actuating member and press brake comprising such a clamping system |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE149439C (en) | ||||
AT263486B (en) | 1966-06-15 | 1968-07-25 | Voest Ag | Manipulator for press brakes |
US3845655A (en) * | 1972-09-18 | 1974-11-05 | Widder Corp | Press brakes |
JPS59118228A (en) * | 1982-12-24 | 1984-07-07 | Nippon Kokan Kk <Nkk> | Top die exchanger of press brake |
DE3512218C2 (en) * | 1984-04-07 | 1993-10-14 | Amada Co | Press brake |
FR2643838B1 (en) * | 1989-03-02 | 1991-05-31 | Treillet Jean | RIGID FIXING DEVICE FOR HANGING PARTS SUCH AS BENDING PRESS PUNCHES |
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 |
EP1529571B1 (en) * | 2003-11-06 | 2007-01-17 | Cornelis Hendricus Liet | Press brake |
IT1398744B1 (en) * | 2010-03-12 | 2013-03-18 | Salvagnini Italia Spa | PRESSOPIEGA WITH BENDING TOOL WITH VARIABLE LENGTH AUTOMATICALLY. |
-
2011
- 2011-04-29 AT AT6002011A patent/AT510969B1/en not_active IP Right Cessation
-
2012
- 2012-04-26 EP EP12728364.6A patent/EP2701860B1/en not_active Not-in-force
- 2012-04-26 WO PCT/AT2012/050057 patent/WO2012145781A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012145781A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012145781A1 (en) | 2012-11-01 |
AT510969A4 (en) | 2012-08-15 |
AT510969B1 (en) | 2012-08-15 |
EP2701860B1 (en) | 2017-04-05 |
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