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
  • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
  • B21D5/047—Length adjustment of the clamping means
• • 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
  • B21D5/0218—Length adjustment of the punch
• • 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 tool changing unit, a clamping jaw, in particular an upper clamping jaw, a production system equipped with the tool changing unit and the clamping jaw and a method for changing tools in such a production system.
• EP 0 258 204 A2 describes a device for folding sheet metal blanks, in which the hold-down punch of the hold-down device is formed from a plurality of segments.
• the Niehaltestest Zi are ver slidably mounted in a parallel to the Abkantachse guide of the holddown and displaced by means of an actuating rod.
• the segments depending Weil a clutch to selectively couple the segments with the control rod or the low holder can.
• the segments are arranged on both sides of a central segment and assembled into a row.
• the middle segment can be removed with the help of a slidably mounted in hold down the hold down slide from the segment row to be replaced either against another middle segment to Kings NEN or to create space in the hold-down temple for an inward sliding of the marginal segments.
• To change the means segments includes in the upper rest position of the slide bers to the slide laterally a change device, which communicates with a memory in connec tion.
• the object of the present invention was to overcomes the disadvantages of the prior art and to provide a tool change unit, a clamping jaw, in particular an upper jaw with at least one jaw set of a plurality of individual jaws, a production line and a method for changing tools in a production line. by means of which a user is able to make a simple, and especially a short time required tool change to increase the productive time of the manufacturing plant.
• This object is achieved by a tool change unit, a jaw, in particular an upper jaw with at least one set of jaws of several single clamp jaws, a production line and a method for tool change in a manufacturing plant according to the claims.
• the tool change unit according to the invention is provided for a production plant for the production of workpieces made of sheet metal, in particular by forming by pivoting or swinging bending and setting an active clamping length of a clamping tool, in particular a jaw set comprising a plurality of individual jaws, wherein the tool changing unit comprises a tool holding device, and thereby
• the tool holding device comprises a supporting body
• the tool holding device comprises a number "n" of immediately adjacent tool holding modules, and each tool holding module is held on the Tragkör by, and further
• each tool holding module as part of a coupling device comprises a first coupling means and a cooperating with the first coupling means first actuating means to summarizes, wherein the first coupling means by means of the first actuating means with a single clamp baking in coupling engagement or can be brought out of coupling engagement.
• a separate tool change unit which comprises a tool holding device, which is held on a separate support body.
• the tool holding device comprises a plurality of immediately adjacent to each other arranged tool holding modules, which can optionally ge with at least one or more of the tool jaws of the jaw set in coupling engagement ge introduced.
• each of the tool holding modules has its own first coupling means and cooperating first actuating means. Upon actuation or activation tion of the first actuating means, the first coupling means is brought into coupling engagement with one of the individual jaws.
• each other constructed tool holding modules as quickly as one or more of the individual jaws from the clamping bar, in particular its clamping bar recording, ent accepted or used. If the removal or insertion process of the single jaw or the individual jaws has occurred, regardless of the tool Change unit, the adjustment or displacement of the arranged on the clamping bar segments of the clamping jaw, in particular the upper jaw, carried out by its own Verstellech and so the segments are pushed together into a single unit.
• Another possible embodiment has the features that the tool holding modules are arranged in a common base body and the base body of a first longitudinal end side and a second longitudinal side and of a first transverse end side and a second transverse end side is limited and the base body is held on the support body.
• a stable and one-piece base body can be used.
• the tool holding modules each comprise a base body with a substantially flat profile-shaped Elmriss contour, wherein each base body of a first and second flat side, of a first and second longitudinal end face and of a first and second transverse end side is limited , and the tool holder modules abut each other on the respective facing flat sides and the first transverse end side is facing the carrier body and each base body is held on the carrier body.
• a flat profile-shaped Elmriss contour of the individual tool holder modules a arrangement of a multiplicity of tool holding modules arranged directly adjacent to one another in the smallest space can thus take place.
• each tool holding module the formation and arrangement of the coupling means and adjusting means as well as the requisite supply and discharge lines for the adjusting medium, which is preferably formed from a pressure medium, can take place within this with the least possible space.
• Another embodiment is characterized in that the first coupling means are arranged in the region of the first longitudinal end face of the base body or the base body of the tool holder modules.
• the tool holding modules each comprise a second coupling means and cooperating with the second coupling means second adjusting means and the second coupling means with respect to the first coupling means on the first coupling means opposite the second longitudinal end face of the Grundkör pers or the body is arranged.
• a further embodiment provides that the coupling means are formed in each case by a coupling body received in the base body and adjustable relative to the base body or by an electromagnet. This can be created depending on the choice and design of the coupling means either a mechanically based coupling device or else by a powered by electric current or acted Kopplungsvor direction.
• Another embodiment is characterized in that the coupling bodies are formed by spheres, ellipsoids of revolution or cylinders.
• the coupling bodies are formed by spheres, ellipsoids of revolution or cylinders.
• a further preferred embodiment is characterized in that the adjusting means each case include a control piston, and the adjusting pistons each received in a base body arranged in the control piston space and machse guided in this direction in the direction of a Stellkolbenrau.
• a pressure medium such as, for example, compressed air or hydraulic fluid
• At least one first pressure medium line and at least one second pressure medium line are provided in the base body and the pressure medium line in each case in fluid communication with the control piston space, and the first and second pressure medium line each on mutually averted sides of the in the control piston space Opened actuator piston in the control piston chamber open.
• Another alternative embodiment is characterized in that the actuating piston depending Weil at least one inclined with respect to the Stellkolbenraumachse extending to it rich remplistich ended footprint, on which footprint each one of the coupling body at least in coupling engagement befindlichem coupling body is supported adjacent thereto. Due to the inclined with respect to the actuating piston space axis extending aligned Stellflä surface can be exercised in a wedge effect the adjustment of the coupling body in a loading delay of the adjustment direction and in particular by a predetermined orientation guidance.
• the shelves are each formed as a frustoconical surface. If the footprint formed as a truncated cone surface, can be dispensed with additional guide arrangements between the actuator piston and the body.
• a further embodiment provides that each of the coupling body by means of the sammen felden with this actuator piston of a longitudinal end face superior coupling Stel ment is in a development located within the body or the body release Stel development displaced.
• each of the tool holding modules can be moved from the coupling position into the release position.
• the return position can be done automatically depending on the arrangement and gravity only after release of the actuator piston.
• Another embodiment is characterized in that at least one pressure piston is provided in each of the tool holding modules, whichenfinnom at least one pressure piston in egg nem arranged in the base body or in the Grundkörpem men and this is guided in the direction of a pressure piston chamber axis.
• at least one additional pressure piston By providing at least one additional pressure piston, an adjusting force can be exerted on the respectively coupled individual clamping jaw starting from the tool holding modules. This is especially advantageous for a dispensing operation of the individual clamping jaws of the tool holding device.
• a further preferred embodiment is characterized in that the pressure pistons are respectively arranged in the base body or in the base bodies such that they are adjustable from a pressure position projecting beyond the second transverse end side into a rest position located within the base body or the base body.
• a third pressure medium line is provided in each of the tool holding modules and in each case the third pressure medium line is in flow communication with the pressure piston space on its side facing the first transverse end side.
• the adjustment movement of the pressure piston can be ensured at least in an adjustment direction.
• Another embodiment is characterized in that a number of "n" to tool holding modules same number "o" valve assemblies each with a first pressure medium connection and a second pressure medium connection for each of the horrhal- temodule is provided and in each case the first pressure medium line and the third pressure means - Conduit together with the first pressure medium connection are in flow communication and in each case the second pressure medium line is in flow communication with the second pressure medium connection.
• Another possible embodiment has the features that the adjusting means are formed by electrical current rule. This can be ensured even when training the coupling means as electric magnet proper operation.
• the object of the invention can be solved independently by a jaw, in particular an upper jaw, for a manufacturing plant for the production of workpieces made of sheet metal, in particular by means of ETmfoimung by swivel bending or swing bending.
• a jaw in particular an upper jaw
• the particular upper jaw encompasses
• the Einzelklemmbacken each have a clamping surface with a Umformkante and a spaced therefrom arranged connecting portion, and wherein the clamping surface is zuwendbar the workpiece to be clamped and the connection portion for clamping support on a clamping bar of the manufacturing plant, and thereby
• each of the individual jaws as part of a coupling device further comprises in each case a coupling section
• the coupling section delimits a groove-shaped receiving opening with a first groove side surface, a second groove side surface and a groove base surface
• the groove side surfaces each extend in a normal orientation with respect to the forming edge and in a preferably parallel orientation with respect to the clamping surface on the side facing away from the forming edge side, and
• a third coupling means is arranged or formed in or on each of the first groove side surfaces, which third coupling means is adapted to handle with a first coupling means of a tool holding module of a tooling tevorplatz in Kopplungsein spent.
• the upper jaw comprises, in addition to the jaw segment (s), a separate jaw set of a plurality of single jaws.
• a plurality of individual jaws are used in a predetermined total number of pieces with mutually different jaw thickness or jaw widths, an adjustment of the required for the respective bending process active length of Umformkante can be easily and quickly adjusted.
• each of the individual jaws also includes a coupling portion as part of the coupling device, so each of the individual jaws can be detected and coupled by means of the tool holding device and its tool holding modules.
• the formation of the coupling portion as a groove-shaped or as a U-shaped receiving opening so easy the insertion process of the individual tool holding modules can be performed.
• Each of the groove-shaped receiving openings bounding Nutsei ten romance can be formed on additional webs, which in flachprofilartiger Execution or in the same width or thickness can be attached to the individual jaws according to the respective Einzelklemmba-.
• the groove base can be formed directly by the individual jaw itself.
• a further embodiment provides that a fourth coupling means is arranged or formed in or on each second groove side surface.
• Another embodiment is characterized in that the third and / or fourth coupling means are each formed in the cross-section of the groove-shaped receiving opening formed by a V-shaped recess.
• a further preferred embodiment is characterized in that the Nutrichflä surfaces are each provided on its side facing away from the groove base end portions with a running slope. This can be made sure in a possible projecting a Kopplungskör pers before inserting into the groove-shaped receiving opening a secure return of the coupling body in his rest position located within the body.
• the object of the invention can be solved independently by a production facility for the production of workpieces made of sheet metal, in particular by Elmformung by swivel bending or swing bending, wherein the manufacturing facility comprises
• a bending machine with a fixed machine frame, a lower clamping bar and an upper clamping bar, one of the clamping bars being adjustable relative to the machine frame relative to the machine frame,
• a clamping tool with a lower jaw and an upper jaw, wherein the lower jaw on the lower clamping bar and the upper jaw on the upper clamping bar are releasably clamped to keep the workpiece to be clamped at least during the bending process between the two jaws, and
• At least the upper jaw comprises at least one upper jaw segment and at least one jaw set of a plurality of individual jaws with a total number of pieces "m", wherein of the at least one upper jaw segment and the individual jaws ETmfoimkante is defined, and
• a total thickness of the individual clamping jaws with their total number of pieces "m" in the direction of their forming edge essentially corresponds to a length of the juxtaposed tool holding modules with their number "n". This ensures that the total number of individual jaws can always be exchanged or replaced at once by means of the tool change unit.
• the object of the invention can also be independent by a method for horrwech sel in a manufacturing plant for the production of workpieces made of sheet metal, in particular by forming by pivoting bending or bending, in particular using egg ner inventively designed tool change unit and an inventively formed from jaw, in particular an upper Jaw, according to the following steps are solved:
• Providing a tool changing unit with a tool holding device which tool holding device comprises a carrier body and a number "n" of directly adjacent tool holding modules, and the tool holding modules are held on the carrier body,
• each tool holding module with a first coupling means and a first actuating means interacting with the first coupling means as part of a coupling device
• each coupling section Forming the individual clamping jaws each with a coupling section as a constituent part of a coupling device, wherein a groove-shaped receiving opening is delimited by each coupling section with a first groove side surface, a second groove side surface and a groove base surface,
• the advantage achieved thereby lies in the fact that by this method chosen here and the use of the inventive tool change unit and the jaw set from the individual jaws can be carried out selvorgang process so quickly and with the shortest time duration.
• a clamping tool adapted to the respective bending process is available in an even shorter period of time in which the further bending operations can be carried out without high interruptions.
• Another alternative approach is characterized by the fact that after removal of the at least one jaw the remaining at the upper clamping bar at least one upper jaw segment and the remaining or the remaining Einzelklemmba blocks are adjusted by an adjustment in a juxtaposed position.
• Another possible and possibly alternative approach has the features that the removed from the tool change unit from the upper clamping bar at least a single jaw either outside of the bending area and thus laterally again be used and held on the upper clamping bar or give extract to a tool storage.
• the time required for tool change and the beginning of he neuten clamping and bending operation can be additionally shortened.
• the object of the invention can be solved independently and independently by a method for tool change in a manufacturing plant for the production of workpieces made of sheet metal, in particular by ETmformung by bending or embossing bending, by means of a vorgese Henen or trained bending machine, according to the following steps:
• each tool holding module with a first coupling means and a first actuating means interacting with the first coupling means as part of a coupling device
• a bending tool with a bending die and a bending punch, the bending die being held releasably clamped on the lower pressing beam and the bending punch on the upper pressing beam in order to be able to carry out the bending operation in the workpiece to be produced,
• Forming the single bending punch each having a forming edge and a connecting section arranged at a distance therefrom, wherein the forming edge can be turned towards the workpiece to be reshaped and the connection section is detachably held clamped on the upper pressing beam,
• each coupling portion Forming the single punch each with a coupling portion as a component of a coupling device, wherein of each coupling portion a groove-shaped receiving opening with a first Nutsei ten Chemistry, a second groove side surface and a groove base is bounded,
• FIG. 1 shows a production plant with a bending machine, with the support table removed and the tool change unit removed, in view;
• Fig. 2 shows the manufacturing plant of FIG. 1, with the tool change unit for the upper
• FIG. 3 shows the tool change unit and a section of a Einzelklemmba- ckens, in side view and stylized representation.
• FIG. 4 shows the tool change unit and a section of a Einzelklemmba- ckens of Figure 3, with not yet in coupling engagement befindlichem coupling device, cut in side view.
• FIG. 5 shows the tool change unit and a section of a Einzelklemmba- ckens according to FIGS. 3 and 4, with Kopplungsengriff befind Anlagen Kopplungsvor direction, cut in side view.
• FIG. 6 shows the tool change unit with a common base, in diagrammatic view
• Fig. 7 shows another possible, and possibly independent use of the tool changing unit in a production line for bending or embossing bending of a workpiece to be machined from a sheet, in view.
• a manufacturing plant 1 and components thereof is shown in highly schematic simplified schematic representations, which is formed in the present case, in particular for the swivel bending or swing bending of sheet metal to be produced workpieces 2.
• a metallic material is usually used, which can be referred to in its undeformed state as a flat material or flat element.
• the manufacturing plant 1 can be referred to as a swivel bending or swinging bending plant designated net.
• the manufacturing plant 1 used in the present case for bending comprises a bending machine 3, in particular a press, which is designed, inter alia, for clamping support of the sheet to be produced from the workpieces 2 or workpieces between a relatively adjustable clamping tool 4.
• the clamping tool 4 comprises in vorlie lowing embodiment, a lower jaw 5 and a cooperating upper jaw 6.
• the lower jaw 5 can several lower Klemmbackenseg elements 40 and the upper jaw 6 can hold several upper jaw segments 41, which will be described in more detail below ,
• the lower jaw 5 can also be called a lower cheek or anvil and the upper jaw 6 can also be referred to as a cheek or hold-down.
• the lower jaw 5 may also be formed as a single punch throughout.
• the upper jaw segments 41 can have a different thickness or width relative to one another and form a hold-down punch in their pushed together working position, which is assembled into a unit.
• the direction is generally designated as the direction which runs in a horizontal plane and in a vertical orientation with respect to the longitudinal extent of the respective clamping jaws 5, 6.
• this is the direction which also corresponds to the feed direction or the withdrawal direction.
• the upper jaw 6 is arranged above the workpiece to be manufactured 2 at the Biegema machine 3 and there held sufficiently strong, in particular clamped. Also, the lower jaw 5 is held on the bending machine 3, in particular clamped.
• a machine frame 7 of the bending machine 3 comprises, for example, of a bottom plate 8 vertically upstanding, spaced from each other and aligned parallel sowan conditions 9, 10. These are preferably by a massive, for example, formed from a sheet metal part cross-member 11 at their distance from the bottom plate 8 end portions connected with each other.
• the machine frame 7 is usually a solid, preferably on a flat hall floor fixed component of the bending machine 3.
• the shape shown here has been chosen only by way of example for a variety of other possible training ge.
• the side cheeks 9, 10 may be formed to form a clearance for the forming of the work piece 2 preferably in approximately C-shaped, with frontal surfaces 12 of bottom flanges of the side cheeks 9, 10 a fixed, in particular on the bottom plate 8 rising bottom Clamping bar 13 is attached, which can also be referred to as a press bar.
• This preferably fixedly arranged and fixed lower clamping bar 13 may also be referred to as a clamping table on which also parts of the clamping tool 4 (in particular the lower jaw 5) are arranged and also held it.
• clamping bar guides 15 a to the lower clamping bar 13 relatively adjustable, upper clamping bar 16, in particular a pressure bar, guided guided.
• the clamping bar guides 15 are usually designed as linear guides in a wide variety of embodiments.
• this upper clamping bar 16 may be referred to as a pressing bar, which, however, relative to the machine frame 7 is displaceably guided on this.
• jaw receptacles 19, 20 for mounting with the or the clamping witness 4, in particular the lower and upper jaw 5, 6, be arranged.
• the or the clamping tools 4 can also be held with the interposition of an adapter not shown on the jaw receiving 19, 20.
• the bending machine 3 shown may include as drive assembly 21 for the adjustable upper clamping bar 16, namely the pressure bar, at least one with electrical energy plants Nes drive means 22.
• the one or more drive means 22 are conductively connected to a fed from a power grid 23 control device 24, as shown only in FIG. 2.
• the operation of the bending machine 3 can be controlled via an input terminal 25 connected to the control device 24 or communicatively connected.
• the drive means 22 are preferably electromotively operated spin deltriebe 26, as they are well known, of which adjusting means 27 for a reversible positioning movement of the upper bar formed by the pressure bar 16 with this, for example, are drivingly connected. But it can also be other from the prior art known drive means 22, such as cylinder-piston assemblies, stepping motors, toothed rack genantriebe or the like, are used.
• the adjusting plane 28 preferably extends centrally with respect to the clamping bar 13, 16 or the jaw receiving means 19, 20 arranged on it.
• a vertically oriented plane which of the two previously described be directions or axes, namely the "Y" -Axis and the "Z" -axis is spanned.
• the two jaws 5, 6 form between itself and to each other En En the one clamping region 29.
• An additional support table 32 with its support surface 33 defining Auflageflä surface is preferably arranged in the region of the front or the feed side of the bending machine 3.
• the support plane 33 can also be referred to as a support plane. Since it should be mentioned that the support surface does not have to be formed over the entire surface, but can also be formed from several in the feed direction of the sheet to be processed next to each other and / or arranged behind each other support surfaces. Defined by the support plane 33 bearing surface is preferably arranged in the same plane as the lower clamping surface 30 of the lower jaw 5.
• a bending region 34 is understood to be that region which serves to form the work piece 2 to be produced from the sheet, which is still mostly flat, or to further process an already pre-formed work piece 2, by at least one additional fold or fold is trained.
• the bending region 34 is usually spaced from the adjustment plane 28 of the clamping bars 13, 16 and is formed by mutually facing end sections of at least one, but preferably both clamping jaws 5, 6.
• the bending region 34 is arranged on the side of the clamping bars 13, 16 facing away from the support table 32 or an operator not shown in detail.
• the bending portion 34 is disposed within the machine frame 7 extending.
• the bending region 34 forms on the workpiece 2 to be produced mostly a preferably geradli nig extending bending line, which form on both sides of the bending region 34 each leg as a result of the bending process performed.
• One of the legs of the workpiece 2 is held in clamping position between the two clamping surfaces 30, 31 of the jaws 5, 6, wherein the at least one further leg outside of the clamping surfaces 30, 31 is arranged to.
• the two legs enclose between them a bending angle.
• This bending angle is measured in a reference plane aligned perpendicular to the bending line.
• the reference plane for its part, is furthermore preferably also aligned with respect to the adjustment plane 28 in the vertical direction.
• the machine frame 7 of the bending machine 3 is made only very simplified is, and it is also possible to use this deviating embodiments zen.
• the machine frame 7 or the machine body could be formed with a free Stän der trimgang.
• the jaw receivers 19, 20 could be received between the side walls 9, 10 and side panels.
• the machine frame 7 and the machine body is no free Stän der trimgang possible, whereby the jaw receiving 19, 20 can not be picked up between the Be tenwangen 9, 10 and side panels.
• the bending machine 3 of the manufacturing plant 1 also includes a bending unit 35, which can also be referred to as a folding unit or forming unit.
• a possible embodiment of the same is indicated in simplified form in FIG. 2 and can be adjusted relative to the machine frame 7, depending on the bending process to be carried out. For better clarity, was omitted in Fig. 1 on the Dar position of the bending unit 35 and its components.
• the lower clamping jaw 5 forms or has a first forming edge.
• the upper Klemmba bridge 6 forms a second forming edge or has this.
• the two clamping surfaces 30, 31 of the clamping jaws 5, 6 described above define a workpiece support plane 36 for the workpiece 2 to be produced.
• the workpiece support plane 36 is arranged in the vertical direction at the same height as the support plane 33 defined by the support table 32 ,
• the two planes are preferably aligned plane-parallel to each other and can be arranged in a common plane.
• the bending unit 35 may comprise one or even a plurality of bending tools 37, which or which may be arranged on a bending beam 38.
• the bending beam 38 can be adjusted to non-illustrated bending beam guides by means of a bending beam drive be relatively short of the machine frame 7. But it could also be provided only a bending tool 37, which is pivotable about a parallel ver with respect to the bending region 34 pivotable tool pivot axis.
• the bending tool 37 may be arranged depending on ge wished bending direction once above the workpiece support plane 36 and once under half of the workpiece support plane 36 and thereby provided for bending End of the bending tool 37 are each pointing in the direction of the bending area pointing.
• the upper jaw segments 41 of the upper clamping jaw 6 are preferably clamped such that one of them is removed from a schematically indicated tool changing unit 39 from the current position and either after shifting or displacing further upper jaw segments 41 in FIG. Z "-direction and thus in the direction of the longitudinal extent of the bending region 34 or the clamping bar 13, 16, in the resulting space or the gap can be inserted or used again at the edge and optionally held there again clamped.
• the tool changing unit 39 is shown schematically in front of the upper clamping bar 16. This can be held on the upper clamping bar 16 or also on the stationary machine frame 7, in particular its side cheeks 9, 10. In the latter case, the upper clamping beam 16 is to be adjusted relative to the tool exchange unit 39 in a predefined tool changing position, in order to be able to carry out the planned changing operation. For this purpose, the clamping or the clamps to be changed and / or move the jaw segments 41 to solve or unlock, so that the removal and / or the sliding movement of the clamping bar 16 remaining upper jaw segments 41 can be performed.
• the at least one removed upper jaw segment 41 is preferably taken in the "X" direction of the upper clamping bar 16 after unlocking gelung the clamping and stored at one of the previously described positions.
• the lower jaw 5 may include a plurality of equally formed in their width lower jaw segments 40.
• Glei Ches also applies to the upper jaw 6, which may include a plurality of equally formed in their width upper jaw segments 41.
• the width or thickness of the jaw segments 40, 41 is viewed in the direction of the "Z" axis and thus in the direction of the longitudinal extension of the clamping bar 13, 16.
• at least one upper jaw set 42 of a plurality of individual jaws 43, 44th , 45 and 46 are provided.
• a number or number "m" of individual jaws 43, 44, 45 and 46 may be two, three or four pieces up to six, seven eight and ten pieces.
• each of the individual preferred upper Einzelklemmba bridges 43, 44, 45 and 46 which each have a same thickness or width, also provided with the same reference numerals.
• This jaw set 42 includes e.g. a first single jaw 43 with a thickness or width of 10 mm, a second single jaw 44 with a thickness or width of 15 mm, a third single jaw 45 with a thickness or width of 20 mm and three pieces fourth single jaw 46 with a thickness or Width of 40 mm each.
• the holding and clamping of the individual jaws 43, 44, 45 and 46 is analogous to the or the upper jaw segments 41 according to the known prior art on the upper jaw receiving 20.
• the upper jaw segments 41 and the Einzelklemmba bridges 43, 44, 45 and 46 in the direction of the longitudinal extension of the upper jaw receiving unit 20 by means of an adjusting unit not shown moved or relocated.
• individual ones of the upper jaw segments 41 and / or individual ones of the individual jaws 43, 44, 45 and 46 of FIG taken from the upper jaw receiving 20 of the upper clamping bar 16 and either outside of the bending area and thus laterally again inserted and held on the upper jaw receiving 20 or delivered to a tool storage who the.
• the upper jaw 6 may comprise at least one upper jaw segment 41 and / or at least one of the individual jaws 43, 44, 45, 46. 1 to 4, only the division and design of the upper jaw 6 and the tool change unit 39 is described in more detail, wherein this division and training can be carried out analogously to the lower jaw 5.
• the individual clamping jaws 43, 44, 45, 46 likewise each have the clamping surfaces 30 and the Eimformkanten 47 or bending edges extending at the edge in the "Z" direction. Furthermore, in each of the individual clamping jaws 43, 44, 45, 46 there is provided a connection section which is arranged at a distance from the clamping surface 30 and faces the upper clamping bar 16, in particular its upper jaw receiving device 20, which can be formed according to the known state of the art , The one or more connection sections serve for klem ing holder on the clamping bar 16 of the manufacturing plant. 1
• the tool change unit 39 can simply adjust the setting of an acute clamping length of a clamping tool, in particular the jaw set 42 comprehensive send several of the individual jaws 43, 44, 45, 46 are performed.
• the tool holder device 48 comprises a carrier body 49 and a plurality of tool holding modules 50 arranged next to one another.
• the number of tool holder modules 50 is indicated by "n" pieces and in the present exemplary embodiment is 16 (sixteen).
• the individual tool holding modules 50 are arranged directly next to each other and also held or fixed to the support body 49.
• These may be, for example, spindle drives, servo motors, cylinder Kolbenanordnun conditions or the like.
• the tool holding modules 50 can either be arranged and formed within a common main body 51 or else each of the tool holding modules 50 arranged in egg nem own plate-shaped base body 51 and the main body 51 may be assembled into a common block.
• the tool holding modules 50 are each formed from the individual plate-shaped basic bodies 51, they have an outline contour that is substantially flat profile-shaped.
• the thickness or thickness of the tool holding modules 50 is small in this case and may be e.g. be about 10 mm.
• the main body 51 is delimited by a first flat side 52, a second flat side 53, a first longitudinal end face 54, a second longitudinal-side 55, a first transverse-side 56 and a second transverse-side 57.
• the respective pages can also be referred to as surfaces.
• the individual plate-shaped tool holding modules 50 are respectively disposed against each other facing flat sides 52, 53 abutting one another. Furthermore, here is the first transverse end side 56 of the support body 49 zugewen det. On the presentation of fasteners between the main body 51 and the support body 49 has been omitted for the sake of clarity.
• the tool holding modules 50 are to be arranged at a predetermined center distance to each other, taking into account here the thicknesses or widths of the individual jaws 43, 44, 45, 46.
• the main body 51 or the main body 51 still a variety of components or component groups are added, which will be described in more detail below.
• the tool holding modules 50 of the tool changing unit 39 serve to hold the above-described individual jaws 43, 44, 45, 46 of the jaw set 42 for tool change in a coupling position and remove after releasing the clamping bracket on the clamping bar 16 of this and to use again.
• each of the tool holding modules 50 as part of a coupling device 58, comprises a first coupling means 59 and a first actuating means 60 cooperating with the first coupling means 59.
• the respective first actuating means 60 serves to actuate or displace the first coupling means 59 so as to bring this into a coupling position and thus into a coupling engagement with a further coupling means described later.
• the first adjusting means 60 also serves to spend the first coupling means 59 out of coupling engagement.
• the first coupling means 59 can be brought into coupling engagement or out of coupling engagement by means of the first actuating means 60 with at least one of the individual clamping jaws 43, 44, 45, 46 or else all.
• the first coupling means 59 is arranged in the region of the first longitudinal face 54 of the main body 51 in each tool holding module 50.
• Each tool holding module 50 preferably comprises a second coupling means 61 and a second adjusting means 62 cooperating with the second coupling means 61.
• the second coupling means 61 is located on the second longitudinal-stitching side 55 of the main body 51 opposite the first coupling means 59 with respect to the first coupling means 59 Base 51 arranged.
• the coupling means 59, 61 are each formed by a coupling body 63 accommodated in the base body 51 and adjustable relative to the base body 51 or the base body 51.
• the coupling bodies 63 may be e.g. be formed by spheres, ellipsoids of revolution or cylinders.
• the adjusting means 60, 62 each include an actuating piston 64, which are administratnom each in a arranged in the base body 51 or in the basic bodies 51 actuating piston chamber 65. From the actuating piston space 65 is defined a Stellkolbenraumachse 66 whose
• the Stellben piston axis 66 extends in parallel alignment with respect to the L Lucassstimfact 54 and 55 or in normal or rectangular orientation with respect to the Quererstimen 56 and 57 of the main body 51 or the main body 51.
• Each of the actuating piston 64 is guided in the control piston chamber 65 in the direction of the actuating piston chamber axis 66.
• the adjusting movements of the adjusting pistons 64 take place here by means of a pressure medium, such as e.g. Compressed air or a hydraulic fluid.
• each of the tool holding modules 50 is in the main body 51 or 51 in each of the main body 51.
• the Druckstoffleitun conditions 67, 68 are each in fluid communication with one of the actuating piston chambers 65 and open respectively on mutually averted sides of the actuator piston 64 originatednom in the control piston 64 in the control piston chamber 65 a.
• the adjusting piston 64 can be adjusted once in the direction of the second transverse end face 57 or in the direction of the first transverse end side 56.
• the first pressure medium lines 67 with that of the support body 49 facing side of the Stellkol benraums 65 in flow communication
• the second pressure medium lines 68 open on the side of the averted side in the control piston chamber 65.
• the adjusting pistons 64 each have at least one ge with respect to the actuating piston space axis 66 tends to running aligned footprint 69.
• the shelves 69 are intended to hen and trained, in a longitudinal adjustment of the actuating piston 64, the respective men Wegden together and to be adjusted coupling body 63 to spend either in coupling engagement or out of coupling engagement.
• the coupling bodies 63 are adjusted into the respective coupling engagement, the provision also being able to be based on gravity. This is the case here in the first and above arranged coupling body 63 of the first coupling means 59 of the case.
• the return adjustment takes place by a relative movement between the base body 51 and one of the Einzelklemmba- blocks 43, 44, 45, 46.
• Each of the coupling body 63 is supported at least in itself in Kopplungsein befind located coupling body 63 to the footprint 69 fitting thereto ,
• the footprint 69 may be formed, for example in the form of a wedge surface.
• a United rotation lock and guide the actuator piston 64 is provided to prevent rotation about its own axis and also about the actuating piston space axis 66.
• the shelves 69 are each formed as a frustoconical surface.
• each of the coupling body 63 can be displaced from a longitudinal end face 54, 55 superior coupling position in a person within the Grundkör 51 or the main body 51 release position.
• the return adjustment can only be made possible, but not necessarily by the actuator piston 64 be acting.
• At least one pressure piston 70 may be provided in each of the tool holding modules 50.
• the at least one pressure piston 70 is accommodated in a pressure piston space 71 arranged in the base body 51 or in the base bodies 51 and is guided in this direction in the direction of a pressure piston space axis 72.
• the plunger 70 are each arranged in such a way in the main body 51 or in the main bodies 51 that they are adjustable from a second transverse end face 57 superior pressure position in a rest position located within the main body 51 or the main body 51. The adjusting movement in the second transverse end face 57 superior
• Printing position can be done by means of a pressure medium.
• the provision in the within the Main body 51 located rest position can be done by a mechanical contact with one of the individual jaws 43, 44, 45, 46 of the jaw set 42.
• a third pressure line 73 is arranged or formed in each of the tool holding modules 50.
• the third pressure medium line 73 is in each case in fluid communication with the pressure piston chamber 71 on its side facing the first transverse end side 56.
• valve assemblies 74 are provided.
• a separate valve arrangement 74 is provided for each individual one of the works zeughaltemodule 50.
• a number "n" of tool holding modules 50 is provided (preferably 16 pieces), whereby the same number "o” is present on valve assemblies 74.
• Each of the valve arrangements 74 comprises a first pressure medium connection 75 and a second pressure medium connection 76.
• the first pressure medium connection 75 is in fluid communication with the first pressure medium line 67 and also with the third pressure medium line 73 of the respective tool holding module 50.
• the second pressure medium connection 76 in turn is in fluid communication with the second pressure line 68 of the respective tool holding module 50.
• the coupling means 59, 61 formed by an electromagnet could be actuated by electric current as adjusting means 60.
• each of the individual jaws 43, 44, 45, 46 of the Klemmba ckensatzes 42 includes each of the individual jaws 43, 44, 45, 46 as loading constituent of the coupling device 58 further each have a coupling portion 77, like the water better Figs. 3 to 5 can be seen.
• Each of the coupling sections 77 comprises a groove-shaped receiving opening 78, which is delimited by a first groove side surface 79, a second groove side surface 80 and a groove base 81.
• the groove side surfaces 79, 80 he each stretch in a normal orientation with respect to the Umformkante 47 on the side facing away from the Umformkante 47 and in a preferably parallel orientation with respect to the clamping surface 30.
• the groove-shaped receiving opening 78 with the Nutrichflä surfaces 79, 80 can each by flat profile-shaped attachments to the respective single clamp jaw 43, 44, 45, 46 are formed.
• This also existing Einzelklemmba blocks 43, 44, 45, 46 can be retrofitted with the coupling sections 77.
• the coupling device 58 further comprises a third coupling means 82 in the region of the individual clamping jaws 43, 44, 45, 46.
• the third coupling means 82 is arranged or formed in or on each of the first groove side surfaces 79 and is further adapted to be connected to a first one Coupling means 61 of one of the tool holding modules 50 of the tool holder 48 to be brought into coupling engagement.
• a fourth coupling means 83 is also arranged or formed in or on each of the second groove side surface 80.
• the third coupling means 82 and the fourth coupling means 83 are each seen in cross section of the groove-shaped receiving opening 78 formed by a V-shaped recess. In this way, each of the coupling bodies 63 can engage in the coupling position into the respective V-shaped recess provided for this purpose after their adjustment and are supported on one of the recess walls.
• each of the coupling body 63 abuts in the coupling position at that recess wall, which tapers and inclined to the direction away from the respective single jaw 43, 44, 45, 46 direction, each of the main body 51 of the tool holding modules 50 with its second transverse end face 57 to the the groove base 81 pressed.
• the groove side surfaces 79, 80 respectively on their from the groove base 81st averted Endab cut be provided with an inlet slope.
• the manufacturing plant 1 described above can with the tool exchange unit described above 39 and the jaw 5, 6, in particular the upper jaw 6, encompassing at least one upper jaw segment 41 and at least one jaw set 42 of a plurality of individual jaws 43, 44, 45, 46 include.
• the total thickness of the individual clamping jaws 43, 44, 45, 46 essentially corresponds to an overall length of the juxtaposed ones Tool holding modules 50 with their number "n". If the total thickness of the individual clamping jaws 43, 44, 45, 46 is divided by the number of pieces "n" -16 pieces in the present exemplary embodiment-the plate-shaped basic bodies 51 have a thickness of 10.3 mm. The thickness or thickness is preferably selected to be 10.5 mm. In this way, all the individual clamping jaws 43, 44, 45, 46 or just individual ones thereof can also be received and coupled to the tool changing unit 39 and its tool holding modules 50.
• a spacing between the tool holding modules 50 with their coupling bodies 63 must be selected in the same way as stated above.
• the spacing distance relates to the respective means of the tool holding modules 50, in particular their coupling body 63.
• the common base body 51 could also project laterally beyond the first tool holding module 50 and / or laterally beyond the last tool holding module 50. It is then essential to maintain the Crystalungsabstan of between the respective means of tool holding modules 50th
• the tool changing unit 39 and the jaw set 42 must be provided.
• the individual partial lengths of the forming edges 47 formed by the clamping jaw set 42 and optionally also by the at least one upper jaw segment 41 are to be correspondingly adapted thereto by changing.
• the tool changing unit 39 with its tool holding modules 50 is inserted into the receiving openings 78 of the individual clamping jaws 43, 44, 45, 46. If the jaw set 42 is not completely present on the upper clamping bar 16, upper clamping jaw segments 41, if present laterally next to the individual clamping jaws 43, 44, 45, 46, are to be displaced.
• the tool holding modules 50 in the receiving openings 78 is at least one of the first actuating means 60 and optionally also the second adjusting means 62nd the same tool holding module 50, if this is provided activated and the or the coupling means 59 and optionally adjusted 61 in the coupling position and thus ver brought into coupling engagement with the selected individual jaws 43, 44, 45, 46.
• the optionally remaining on the upper clamping bar 16 at least one upper Klemmba ckensegment 41 and the remaining or the remaining individual jaws 43, 44, 45, 46 of an adjustment in a juxtaposed position adjusted.
• the tool change from the unit 39 removed from the upper clamping bar 16 at least a single jaw 43, 44, 45, 46 can either be used outside the bending area and thus laterally again on the upper clamping bar 16 in the jaw receiving 20 and ge be kept or delivered to a tool storage ,
• Fig. 7 is a possible and possibly independent use of the previously described tool change einh eit 39 at a gene for bending or embossing trained manufacturing plant 1 shown.
• the bending machine 3 comprises in this exemplary embodiment instead of the previously described clamping bar 13, 16 and the NEN clamping jaws 5, 6 there now a lower or first pressing beam 84 and an upper or second pressing beam 85.
• a bending tool 86 to at least one bending die 87 and at least one cooperating bending stamp 88 arranged.
• the bending die 87 and / or the punch 88 is each Weil composed of several individual components, analogous to what has been previously described be.
• the basic structure of the bending machine 3 ' is the same as in the bending machine 3 described above, but no own bending unit 35 is provided.
• the at least one bending punch 88 is arranged above the workpiece 2 to be manufactured on the bending press 3 'and there also held accordingly, in particular clamped.
• the at least one bending die 87 is held on the bending press 3 ', in particular clamped held th.
• the coordinate system is the same as previously described. But it can the arrangement of the at least one bending punch 88 and the at least one bending die 87 can be chosen differently from the previously described arrangement.
• at least one bending punch 88 on the lower or first pressing beam 84 and the at least one bending die 87 on the upper or second pressing beam 85 could be arranged.
• the bending die 87 may preferably comprise a plurality of lower bending die segments 89, which correspond analogously to the previously described jaw segments 40.
• the bending punch 88 may also comprise a plurality of upper bending punch segments 90, which correspond analogously to the previously described jaw segments 41.
• the machine frame 7 of the bending machine 3 comprises, for example, the vertically projecting from the bottom plate 8, spaced apart and parallel to each other aligned th side cheeks 9, 10 which verbun from the cross member 11 to a frame are the.
• On the side cheeks 9, 10 91 of the upper or second press beam 85 is displaceably guided on its own press bar guides.
• pa parallel to each other extending end surfaces 17, 18 of the two pressing bars 84, 85 may each Weil a lower tool holder 92 and an upper tool holder 93 may be arranged.
• the bending process of the workpiece 2 to be produced takes place in this bending machine 3 'directly by means of the bending tool 86 and its components.
• the previously described tool change unit 39 can also be used here be used.
• the bending punch 88 gebil Deten or defined bending length of the workpiece to be bent 2 in addition to the or the upper bending punch segments 90 at least one upper punch set 94 is provided, which basically the previously described jaw set 42 corresponds.
• the punch set 94 in turn comprises a plurality of single punch 95, 96, 97 and 98.
• a number or number of pieces "m" of single punch 95 is provided, in order to perform a very exact or very exact adjustment of the bending punch 88 gebil Deten or defined bending length of the workpiece to be bent 2.
• each of the individual preferred upper one zelbiegest Wilmington 95, 96, 97 and 98 which each have an equal thickness or width, also provided with the same reference numerals.
• This flexure stamp set 94 exemplified herein includes, e.g. a first single punch 95 having a thickness or width of 10 mm, a second single punch 96 having a thickness or width of 15 mm, a third single punch 97 having a thickness or width of 20 mm and three pieces of a fourth single punch 98 having a thickness or Width of 40 mm each.
• a total bending length results from the sum of the respective thicknesses or widths.
• the six pieces of single punch 95, 96, 97 and 98 form a total bending length of 165 mm at a position adjacent to each other.
• the bending die 87 can not only include the bending die segments 89, but additionally also analogously to the punch set 94, in turn, comprise a separate bending die set 99, which is only indicated by way of example, comprising a plurality of individual dies no longer designated.
• Each bending punch 88 in particular the bending punch segments 90 and the single punching dies 95, 96, 97 and 98, form on their end facing the workpiece 2 an edge 47 or bending edge which cooperates with the bending die 87 in a known manner.
• the tool changing unit 39 can not only be used in the swivel bending, but also in a bending machine 3 ', which is designed for bending, bending or stamping bending, can be applied.
• the process steps to be carried out during a tool change are listed as follows:
• a tool changing unit 39 with a tool holding device 48, which tool holding device 48 comprises the carrying body 49 and a number "n" of tool holding modules 50 arranged directly next to one another, and the tool holding modules 50 are held on the carrying body 49,
• At least one bending punch segment 90 and at least one bending punch set 94 comprising a plurality of single punching dies 95, 96, 97, 98 for forming the punch stamp 88, Forming the single bending punches 95, 96, 97, 98, each having a forming edge 47 and a connecting section arranged at a distance therefrom, wherein the forming edge 47 can be turned towards the workpiece 2 to be formed and the connection section is held releasably clamped on the upper pressing bar 85,
• Wegver Wegverstellen the tool changing unit 39 together with the at least one held thereon held single punch 95, 96, 97, 98th
• Control device 54 first longitudinal front side
• Input terminal 55 second longitudinal side spindle drive 56 first cross-stroke side
• Adjustment means 57 second transverse end side

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bending Of Plates, Rods, And Pipes (AREA)
• Mounting, Exchange, And Manufacturing Of Dies (AREA)

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• 2018
  • 2018-02-21 AT ATA50158/2018A patent/AT520943B1/de active
• 2019
  • 2019-02-19 EP EP19714302.7A patent/EP3755480B1/de active Active
  • 2019-02-19 JP JP2020544192A patent/JP7317843B2/ja active Active
  • 2019-02-19 US US16/966,783 patent/US11992872B2/en active Active
  • 2019-02-19 CN CN201980014055.9A patent/CN111971132B/zh active Active
  • 2019-02-19 WO PCT/AT2019/060058 patent/WO2019161425A1/de not_active Ceased

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