EP0268676B1 - Procede et dispositif pour le formage a froid de profiles en acier et metaux non ferreux - Google Patents

Procede et dispositif pour le formage a froid de profiles en acier et metaux non ferreux Download PDF

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Publication number
EP0268676B1
EP0268676B1 EP87905198A EP87905198A EP0268676B1 EP 0268676 B1 EP0268676 B1 EP 0268676B1 EP 87905198 A EP87905198 A EP 87905198A EP 87905198 A EP87905198 A EP 87905198A EP 0268676 B1 EP0268676 B1 EP 0268676B1
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EP
European Patent Office
Prior art keywords
section
profile
turntable
roll
controlled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP87905198A
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German (de)
English (en)
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EP0268676A1 (fr
Inventor
Walter E. SPÄTH
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Spaeth & Co KG Stahlbau-Biegetechnik GmbH
Original Assignee
Spaeth & Co KG Stahlbau-Biegetechnik GmbH
Spath & Co KG Stahlbau-Biegetechnik GmbH
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Priority to AT87905198T priority Critical patent/ATE66393T1/de
Publication of EP0268676A1 publication Critical patent/EP0268676A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/02—Bending by stretching or pulling over a die
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber

Definitions

  • the invention relates to a method and a device according to the preambles of claims 1 and 4.
  • Such a method is also known, for example, from DE-Al-3404641, which goes back to the same applicant.
  • a feature of this method is that the profile that has just been formed is preloaded in an adjustable manner, and that the profile that is under tension is then subjected to a roll-bending process.
  • the rolling-bending process was achieved in that a bottom rail profile with an adjustable force was pressed onto the profile on the underside of the profile, after which the rolling tool attached to at least one end of the profile carried out a rotary movement in the sense of a winding movement and the profile under tension wrapped the outer circumference around.
  • the invention is therefore based on the object of developing a method and a device of the type mentioned in such a way that profiles made of steel and non-ferrous metals in any curve shapes, in particular clotiodes, can be produced efficiently and true to shape without deforming the respective profile cross section.
  • An essential feature of the present invention is that the bending tool carries out a three-dimensionally controlled movement in all three spatial axes and that at least in the forming area of the profile on the outside of the profile there is a play-free guide system which engages around the profile in a form-fitting manner and presses against the bending tool. This prevents reliable deformation of the profile cross-section during the bending process.
  • thin and thick-walled, large and small-volume extruded, drawn, edged or rolled profiles or hollow profiles made of steel or non-ferrous profiles can be bent without deformation in any spatial direction.
  • a preferred application example of the present invention relates to the production of transport rail systems from aluminum profiles.
  • Such transport rail systems are in Motor vehicles are used to provide an extruded aluminum profile that is bent and partially also twisted in several room levels with a transport carriage that runs in the groove of the extruded profile and that guides the seat belt.
  • Another application example for the application of the method according to the invention is the production of window frames for motor vehicles with curved window panes.
  • there are a large number of identical and similar fields of application for example the bending of chassis, body or cabin spars for aircraft, cable cars and the like.
  • the invention thus makes the cold forming process independent achieved at any point on the profile with regard to deformation axes, profile geometry and cross-section.
  • a practical embodiment of the method according to the subject matter of claim 2 provides that in a first step the groove of the profile in the area of a threading station is filled with a link chain which essentially fills the cross section of the groove, that in a second step the profile thus prepared is one spatial roll-stretch-bending process is subjected according to claim 1 and that in a third step, the three-dimensionally deformed profile is processed on a calibration station by pulling a link chain with calibration cores attached to it through the groove.
  • a link chain introduced into the profile is moved during the forming process by at least half the length of a link in the longitudinal direction of the groove, in order to avoid that the links move in press off the groove and this leads to bulges in the groove wall or profile interior.
  • a first embodiment of a device for carrying out the method provides that the bending tool consists of a rotating table which can be moved in all three spatial axes and on which a template is arranged, the outer circumference of which essentially corresponds to the three-dimensional bending line of the finished bent profile, that of the rotating table furthermore, a clamping element for one-sided clamping of the profile is fastened and that the other end of the profile is received by a clamping head fixed on the machine frame.
  • the template does not necessarily have to correspond exactly to the finished three-dimensional bending line of the finished bent profile, because the bending radii can be gripped in the template in such a way that a later springing of the finished bent profile bar is taken into account.
  • the profile does not deform inadmissibly during the forming process and that in particular the groove cross section does not deform is the fact that - according to claim 5 - at least in the forming area of the profile opposite the template of the turntable and radially adjustable to the turntable or several profile rollers are arranged, which can also be moved in a controlled manner in synchronism with the controlled, three-dimensional movements of the turntable.
  • the pressure profile rail known from the prior art is therefore replaced according to the invention by one or more profile rollers which, controlled in synchronism with the movements of the turntable, press the profile in the forming area onto the template of the turntable.
  • a first group of embodiments according to the present invention provides that the synchronous pressing of the profile rollers in the forming area of the profile on the template of the turntable takes place in that the profile roller is connected to the turntable and consequently synchronizes all movements of the turntable.
  • a second group of embodiments provides that the movements of the profile roll are controlled independently of the movements of the turntable by a separate control system, i.e. So that profile roll and turntable can be controlled independently. Accordingly, this also includes the possibility of not only moving the profile roller and the rotary table synchronously with one another, but also, for example, the possibility of tilting the profile roller obliquely in the direction of the plane of the rotary table and pressing it onto the profile to be bent in this position.
  • the outer circumference of the profile rollers encompasses at least part of the profile in a form-fitting manner and that the part of the profile cross-section not overlapped by the profile rollers is positively overlapped by the profile of the template.
  • a single profile roller is assumed in the following description, although the inventive concept encompasses any arrangement of a plurality of profile rollers, which can rest both on one side (as described) and on the opposite side of the profile.
  • the profile is encompassed in a form-fitting manner on all sides, that is to say it is completely surrounded by associated profiles.
  • the border on one side is made by the profile of the template, while the rest of the not yet bordered part is bordered by the profile shape of the profile roll.
  • the profile can be deformed like a "roller coaster".
  • the profile in certain predetermined profile sections can also be twisted in a controlled manner, which is preferably achieved in that the clamping head arranged on the movable profile rail to which the profile roller is mounted is rotatably driven is.
  • the movement control of the turntable in all three room levels is also carried out in several different embodiments. All embodiments are based on the idea that the pivot point of the turntable must always lie in the neutral profile center of the profile and that the profile roll enclosing the profile in the forming area must also be as precisely aligned as possible with the pivot axis of the turntable.
  • the entire rotary table to the machine frame can be rotated by at least 180 ° in two mutually perpendicular horizontal axes results in the particular advantage that not only three-dimensional positive radii can be bent, but also negative radii, so that, so to speak, a "snake profile""can be bent with alternately reversed bending directions.
  • the positive radius is first bent three-dimensionally on the turntable. Then the profile is released with one end from the clamping head and the entire turntable is rotated by 180 ° around its first horizontal axis (e.g.
  • FIG. 1 to 3 show a longitudinal slide 1 which can be moved in the X direction (arrow direction 20) on a machine frame 21.
  • a machine frame 21 On the machine frame 21, parallel and spaced-apart guide rails 27 are provided, on which the longitudinal slide 1 can be displaced in the longitudinal direction of the guide rail 27.
  • the displacement takes place in that the guide rails are each connected on the end face by a cross-member 24, 25 and on the one cross-member 24 a drive motor 22 is arranged which drives a spindle 23 which is rotatably mounted in the opposite cross-member 25.
  • the spindle passes through a spindle nut arranged in the longitudinal slide 1, as a result of which the longitudinal slide 1 can be moved in the direction of the arrow 20 described.
  • the longitudinal slide 1 in turn has parallel and mutually spaced guide rails 28 on which a cross slide 2 which is movable in the Y direction (arrow direction 30) is arranged.
  • the movement drive of the cross slide 2 takes place in an analogous manner to that described previously with reference to the longitudinal slide 1, i.e. the two guide rails 28 are each connected by cross members 29 and on one cross member a drive motor 31 is arranged which arranges a spindle 32 which is rotatably mounted in the opposite cross member 29. The spindle in turn passes through a spindle nut connected to the cross slide 2.
  • the cross slide 2 carries a vertical slide which can be displaced in the Z direction (arrow direction 35).
  • two parallel and spaced-apart vertical guide rails 33 are arranged on the cross slide 2, which are connected at the top by a crossbar 34 are.
  • two parallel drive motors 36 are fastened, each of which drives a spindle 37, which in each case passes through a spindle nut (not shown in detail) in the vertical slide 3.
  • the spindles 37 are rotatably mounted in the cross slide 2.
  • the vertical slide 3 carries a swivel drive for the bending tool.
  • the swivel drive consists of a drive motor 38 which is fastened to the vertical slide 3 and which drives a shaft 4 which can be driven in rotation in the direction of arrow 39.
  • the free, front end of the shaft 4 engages via a flange 40 on a holding plate 42 of the bending tool.
  • the bending tool itself consists of the holding plate 42, on the underside of which a drive motor 41 is connected, which drives a turntable 5 with its shaft 43, on which a template 12 is mounted, which essentially corresponds to the shape of the finally bent profile bar (profile 13) .
  • the turntable 5 is rotatably supported on the holding plate 42 with the aid of bearing elements 45.
  • the turntable 5 is driven in rotation by the drive motor 41 in the arrow directions 44.
  • the turntable 5 carries on its upper side a clamping element 6 which can be moved in and out radially to the shaft 43 in the direction of the arrow 46, so that the free one end of the profile 13 is clamped with this clamping element, as shown in FIG.
  • a comparison of Figures 1, 2, 3 also shows that in the forming area 85 of the profile 13, ie in the area where the maximum bending of the profile on the template 12, a profile roller 7 presses in the radial direction to the turntable from the outside onto the template 12, the profile roller 7 always remaining in positive contact in the forming area 85 with the profile 13 via a corresponding drive controlled in all three spatial axes.
  • the profile roller 7 is in this case rotatably mounted in a first, inner slide 47, the slide 47 being able to be moved in and out radially in the arrow directions 49 radially to the center of the turntable 5.
  • the slide 47 is mounted in a larger slide 50 so that it can be moved in the arrow directions 49, the slide 50 itself being held in a profile rail 8 so that it can be moved in the arrow directions 46.
  • the profile rail 8 is essentially U-shaped, a spindle 51 extending through the entire length of the profile rail being provided in the region of the base leg, which passes through the slide 50 and interacts there with a spindle nut (not shown in more detail).
  • the spindle is driven in rotation by a drive motor 58 which is fastened to the outside with the profiled rail 8.
  • the slide 50 and thus also the profile roller 7 can thus be adjusted in the arrow direction 46, while a feed motor 48 on the slide 50 takes over the adjustment of the profile roller 7 in the arrow directions 49.
  • the two opposite U-legs of the profile rail 8 are rotatably mounted in the area of mutually aligned pivot bearings 55 on the machine frame 21 in that the pivot bearings 55 are contained in associated bearing blocks 57, which in turn are connected to the machine frame 21.
  • Figures 1 to 3 also show that the end of the profile 13 opposite the clamping element 6 is held by a clamping head 10, which in turn is rotatably mounted on the profile rail 8 via a torsion motor 54, which in turn can be pivoted Area of the bearing blocks 57 is mounted.
  • a clamping head 10 When the clamping head 10 is rotated, the profile 13 is twisted in the arrow directions 9, specifically before it reaches the forming area 85, ie the gap between the profile roller 7 and the template 12.
  • control cabinet 26 which is shown as an example in FIG. 1.
  • the profile rail 8 is pivotable about its pivot bearing 55 in the arrow directions 56, so that the profile roller 7 can follow all movements of the turntable 5.
  • the required frictional contact of the profiled rail 7 in the direction of the template 12 in the forming region 85 is generated in the arrow directions 49 via the feed motor 48.
  • FIGS. 1-3 show two different embodiments of the swivel drive of the turntable 5.
  • FIG. 1 shows as a first exemplary embodiment that the drive motor 38 for the rotary drive of the rotary table 5 is seated on the vertical slide 3 and that the shaft 4 of this drive motor 38 attaches directly and without the interposition of a level regulating device 11 to the holding plate 42 of the rotary table 5.
  • the vertical slide 3 is completely eliminated.
  • the vertical slide 3 shown in FIG. 1 can then be thought of as a plate which is fixedly and immovably connected to the guide rails 33.
  • the drive motor 38 with its shaft 4 is then connected to this plate and a level regulating device 11 is then provided between the free end of the shaft 4 and the holding plate 42 of the turntable 5.
  • This level regulating device is shown in more detail in a simple design embodiment in FIGS. 2 and 3.
  • both the vertical slide and the level regulating device 11 can be present together; however, it is equally possible to use the level regulating device 11 without the vertical slide 3.
  • FIGS. 2 and 3 show the use of both elements, namely the vertical slide 3 and the level regulating device 11.
  • the level regulating device 11 replacing the vertical slide 3 consists of a guide part 61 which is connected in a rotationally fixed manner to the free end of the shaft 4 and which forms a guide receptacle 62 at its front end.
  • this guide receptacle is designed as a dovetail guide aligned in the vertical direction, in which a guide carriage 63 can be displaced vertically in the vertical direction (Z axis).
  • the guide carriage 63 is fixedly connected to the holding plate 42 of the turntable 5 via a connecting part 66.
  • the adjustment in the vertical direction of the guide carriage 63 in the guide receptacle 62 takes place in the exemplary embodiment shown via a simple handwheel 65 which is connected to a spindle 64, the handwheel and spindle being rotatably mounted on the guide part 61 and the spindle being a spindle nut (not shown) in the guide carriage 63 reaches through.
  • FIG. 4 shows a schematic top view of a modified exemplary embodiment in comparison to FIG. 2.
  • the rotary table 5 which is rotatably driven in the arrow directions 15, 16, carries a template 12 and in the forming area 85 opposite the template 12 a profile roller 7 is provided which is displaceably mounted in the arrow directions 46 in the region of a profile rail 8 '.
  • this profile rail 8 can now be rotated both about its longitudinal axis in the arrow directions 56, as a result of which the profile roller 7 can assume different inclinations with respect to the template 12.
  • profile rail 8 ' is also pivotable about a housing-fixed pivot bearing 60 in the arrow directions 59.
  • the profile rail 8 is to be understood as a beam clamped on one side, which is pivotably mounted in the pivot bearing 60.
  • Figure 4 also shows as a variant that the profile roller 7 does not necessarily have to be displaceable in the direction of arrow 46 in the profile rail 8 '; In another embodiment, it is also possible to firmly connect the profile roller 7 to the profile rail 8 and instead to mount the pivot bearing 60 on the machine frame 21 so that it can be displaced in the arrow directions 46.
  • FIG. 5 shows a further variant compared to the previously described embodiments.
  • the vertical slide 3 is slidably mounted in a longitudinal slide 1 (not shown), so that the drive motor 38 can in turn perform movements in the two spatial axes (X, Z) for rotating the shaft 4 because this drive motor 38 is slidably mounted in a vertical slide 3.
  • the cross slide 2 is omitted, however, and the required Y connection is replaced by a displacement of the entire profile rail 8 and the clamping head 10 going in the Y direction.
  • the shaft 4 which can be rotated in the direction of the arrow 39 is seated on a flange 40 which is fixedly connected to the middle part of a rocker 67.
  • the rocker arm 67 is designed as a semicircular part, a pivot bearing 68 being provided at the opposite, mutually aligned ends and the holding plate 42 of the turntable 5 being pivotably mounted in the pivot direction 56 (see FIG. 1) in these mutually opposite pivot bearings.
  • the pivoting of the holding plate 42 in relation to the rocker 67 takes place via a swivel motor 70 which rotates the holding plate 42 in the arrow directions 69 around the pivot bearing 68.
  • the pivoting movement in the arrow directions 39 about the shaft 40 then takes place in the direction perpendicular to this rotational movement in the arrow directions 69, the rocker arm 67 being rotated.
  • the level control 11 previously described with reference to FIGS. 1 and 2 is arranged, which is not shown in the drawing for the sake of simplicity.
  • the profile roller 7 is rotatably mounted in a carriage 47 which is arranged in the arrow directions 52 to be longitudinally displaceable in a profile rail 8 displaceable in the Y direction.
  • the longitudinal displacement takes place with the same arrangement as shown in FIG. 2, namely in that a spindle 51 is rotatably mounted in the longitudinal axis of the profiled rail 8 and passes through a spindle nut arranged in the slide 47.
  • the drive motor 58 FIG. 2
  • the profile roller 7 thus always lies in a form-fitting manner on the outer circumference of the template 12 attached to the rotary table 5, an additional feed motor 48 with an associated slide being provided, not shown in FIG. 5 can be as it was described with reference to Figures 1 and 2.
  • FIG. 6 shows schematically a section through the template and through the opposite part of the profile roller 7 in the forming area 85 (FIG. 2).
  • the profile 13 is positively received both by an associated profile receptacle on the outer circumference of the template 12 and also positively by the associated profile receptacle on the outer circumference of the profile roller 7.
  • the positive engagement of the profile 13 in the profile roller 7 and the template 12 ensures that the profile cannot bulge or buckle on any side or surface during the forming process.
  • the forming center 77 which approximately represents the geometric center of gravity of the profile 13, must lie in the forming plane 78 (this is the longitudinal center plane through the template and the profile roller), and that a link chain 71 also lies in the groove 79 is drawn in, which prevents deformation of the groove and the groove walls during the forming process.
  • FIG. 7 shows an example of the top view of the groove 79, the link chain 71 only being shown schematically.
  • the groove 79 has been cut away so that the larger groove profile 18 behind it is visible.
  • This groove profile 18 is completely filled by the individual links 73 of the link chain 71, all links 73 being fastened to a pull chain 19.
  • a plurality of calibration cores 74-76 are arranged at the end of the link chain 71. These calibration cores are used for the final manufacture of the Dimensional accuracy of the groove after the forming process.
  • the calibration core 74 directly adjoining the last link in the link chain 71 has a smaller diameter than the adjoining calibration core 75 and this in turn has a smaller diameter than the adjoining last calibration core 76.
  • the pull chain 19 is pulled through the groove profile 18 in the direction of the arrow 72 in the direction of the arrow 72 in order to finally establish the dimensional stability of the groove profile 18 and the groove 79, the first calibration core 74 expanding the groove slightly, the calibration core 75 further expanding the Performs groove and the last calibration core 76 then finally widens the groove in the prescribed dimension. This creates smooth and steady transitions in the area of the groove profile 18.
  • link chain 71 it is also important that during the forming process the link chain 71 to a small extent, e.g. is moved by the length 82 of a link 73 in the direction of arrow 72 in order to avoid that the individual links 73 are molded on the groove walls of the groove profile 18.
  • FIG. 8 shows an example of the top view and the section through a three-dimensional profile 13 of the invention.
  • the profile 13 consists of an approximately arcuately curved profile rod, the cross section through the profile being shown in the area of the individual cuts.
  • fastening tabs 83 are formed, in which fastening openings 84 are made. It can be seen from the sections below in FIG. 8 that the profile 13 is twisted in itself, ie, starting from the left end, the profile is continuously twisted in itself perpendicular to the plane of the drawing.
  • the first process step relates to the fact that in the area of a threading station 80 (FIG. 7) the link chain 71 is drawn into the straight profile bar so that the individual links 73 fill the groove profile 18 over the entire length to be bent.
  • the profile After threading the link chain 71 into the straight, unbent profile bar, the profile is bent into the bending machine according to FIGS. 1 and subjected to the shaping process described there.
  • the profile 13 is first clamped at one end in the clamping head 10 and at the other end into the clamping element 6 arranged on the turntable 5.
  • the turntable 5 is then driven by a small amount in the direction of the arrow 15 according to FIG a bias is given to the profile 13, which is maintained throughout the entire forming process.
  • a bias is given to the profile 13, which is maintained throughout the entire forming process.
  • the turntable is aligned in its vertical height above the machine frame 21 with the level-regulating device 11 described at the outset so that the bends can be made in the Z direction up and down from a neutral center line.
  • the actual forming process then takes place, in that the drives for the movement of the rotary table 5 in the X, Y and Z directions are released, it being important that in the forming area 85 the idling profile roller 7 is always the one
  • the protruding part of the profile 13 protrudes positively and pressed together in a force-fitting manner in order to avoid inadmissible deformation and the profile cross-section and, above all, the groove profile 18 in the forming area 85.
  • a controlled torsional movement in the direction of arrow 9 can additionally be imparted to the profile 13 via the rotatably clamped clamping head 10 according to FIG
  • the template 12 having, for example, the shape shown in FIG. 2, the profile is released from the clamping head 10 and then the front clamping element 6 is released, after which the curved profile 13 can be brought together with the template 12 to a calibration station .
  • the calibration station 81 has approximately the function as described in FIG. 7.
  • the purpose of the calibration station is to establish the dimensional stability of the groove profile 18 after the forming process has taken place.
  • the link chain 71 is pulled out of the groove profile 18 in the direction of arrow 19, as a result of which the links 73 themselves cause a slight deformation of the groove profile 18.
  • the calibration cores 74-76 arranged at the end of the link chain 71 then produce the final groove profile 18 in its promoted dimensional accuracy.
  • the profile 13 is clamped firmly on the template 12 in order to avoid that the groove profile 18 deforms during the calibration process on the calibration station 81 or that the entire profile 13 deforms in an undesirable manner.
  • a link chain 71 which fills the groove (79) or the hollow profile
  • a plastic profile instead or the groove (79) or the hollow profile with a low temperature (for example 70 ° Celsius) ) pouring out melting alloy or in a further embodiment it can also be provided to fill the hollow profile with sand.

Claims (13)

1. Procédé pour le formage à froid de profilés (13) en acier et métaux non ferreux, selon lequel le profilé (13), de forme essentiellement droite, est serré aux deux extrémités et soumis à une précontrainte par traction, après quoi ledit profilé (13) soumis à une précontrainte est plié par l'intermédiaire d'un outil de pliage tournant (5, 12), le profilé (13) étant guidé à l'aide d'un système de guidage sans jeu (7, 8, 8′), par solidarité de forme, au moins dans la zone de formage au niveau de l'outil de pliage (5, 12), caractérisé en ce que l'outil de pliage (5, 12) effectue un mouvement commandé suivant les trois axes dans l'espace (X, Y, Z), et en ce que le système de guidage sans jeu (7, 8, 8′) se compose d'un ou de plusieurs galets profilés (7) qui sont également aptes à effectuer un mouvement commandé trimensionnel suivant les trois axes dans l'espace (Y, X, Z), en synchronisme avec le mouvement tridimensionnel commandé du profilé à plier (13), le galet profilé (7) comprimant celui-ci contre l'outil de pliage (5, 12) et le guidant à cet endroit par solidarité de forme.
2. Procédé selon la revendication 1, caractérisé en ce que, sur un profilé (13) obtenu par filage, étirage, pliage à vive arête ou roulage, comportant, à l'intérieur, une rainure (79) ouverte ou dépouillée, respectivement sur un profilé creux, une déformation tridimensionnelle est réalisée grâce au fait que,
lors d'une première opération, la rainure (79) du profilé (13), respectivement le profilé creux, est remplie, dans la zone d'un poste d'enfilage (80), d'une chaîne à maillons (71) qui remplit pratiquement complètement la section de ladite rainure (79), respectivement le profilé creux,
lors d'une seconde opération, le profilé (13) ainsi préparé est soumis au procédé de pliage par étirage et déroulement dans l'espace selon la revendication 1,
et, lors d'une troisième opération, le profilé (13) déformé de façon tridimensionnelle est usiné sur un poste de calibrage (81) grâce au fait qu'une chaîne de formage à maillons (71) comportant, fixés sur elle, des mandrins de calibrage (74-76), est tirée à travers la rainure (79), respectivement le profilé creux.
3. Procédé selon la revendication 2, caractérisé en ce que, pendant le formage du profilé (13) par le procédé de pliage par étirage et déroulement dans l'espace, la chaîne à maillons (71) est déplacée dans le sens longitudinal de la rainure (79) d'au moins la moitié d'une longueur de maillon (73).
4. Dispositif pour le formage à froid de profilés en acier et métaux non ferreux, dans lequel il est prévu un dispositif de serrage (6, 10) pour le profilé (13) tout d'abord droit, et un outil de pliage tournant (5, 12), ainsi qu'un système de guidage sans jeu (7, 8, 8′), comportant un galet profilé (7), qui guide par complémentarité de forme le profilé (13) au niveau de l'outil de pliage, au moins dans la zone de formage, caractérisé en ce que l'outil de pliage se compose d'une table tournante (5) mobile, de façon commandée, suivant au moins deux axes dans l'espace (X, Z), et sur laquelle est disposé un gabarit (12) dont la périphérie extérieure correspond essentiellement à la ligne de pliage en trois dimensions du profilé (13) plié terminé, en ce qu'il est également prévu, fixé sur la table tournante (5), un élément de serrage (6) pour serrer unilatéralement le profilé (13), en ce que l'autre extrémité du profilé (13) est reçue par une tête de serrage (10) entraînée de façon rotative, et en ce qu'il est prévu, au niveau du profilé, au moins un galet profilé (7) qui est également apte à effectuer un mouvement commandé tridimensionnel suivant les trois axes dans l'espace, en synchronisme avec le mouvement tridimensionnel commandé du profilé à plier (13).
5. Dispositif selon la revendication 4, caractérisé en ce qu'il est prévu, au moins dans la zone de formage (85) du profilé (13), placés à l'opposé du gabarit (12) de la table tournante et aptes à être approchés radialement de la table tournante (5), un ou plusieurs galets profilés (7) qui sont également aptes à être déplacés de façon dirigée, en synchronisme avec les déplacements tridimensionnels commandés de la table tournante (5).
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que la périphérie extérieure des galets profilés (7) entoure au moins une partie du profilé par solidarité de forme, et en ce que la partie de la section de profilé qui n'est pas entourée par les galets profilés (7) est entourée par solidarité de forme par le profilé du gabarit (12).
7. Dispositif selon la revendication 4, caractérisé en ce que la tête de serrage (10), disposée sur le rail profilé mobile sur lequel est monté le galet profilé (7), est entraînée de façon rotative.
8. Dispositif selon la revendication 4, caractérisé en ce que la table tournante (5) est apte à se déplacer de façon commandée suivant tous les axes dans l'espace (X, Y, Z) grâce au fait que la table tournante (5) maintenant le gabarit (12) est montée, rotative, sur une plaque de support (42) sur laquelle est fixé l'entraînement rotatif (moteur d'entraînement 41) pour la table tournante (5), qu'il est prévu, sur ladite plaque de support (42), un mécanisme (de nivelage 11) réglable dans le sens vertical (axe Z), et que, à ce dispositif réglable verticalement est appliqué l'arbre (4) d'un entraînement rotatif (moteur d'entraînement 38) qui est fixé à un dispositif de chariot mobile (1, 2) de façon commandée dans les sens X et Y (20, 30).
9. Dispositif selon la revendication 8, caractérisé en ce que le mécanisme réglable dans le sens vertical (35) se compose d'un guidage longitudinal (61-64) commandé, par un moteur ou par un fluide, dans le sens vertical, dont une première partie est fixée à la plaque de support (42) de la table tournante (5) sous la forme d'un élément de guidage mobile (66) et dont la seconde partie reçoit, sous la forme d'un logement de guidage (62), l'élément de guidage mobile (63, 66), l'arbre (4) de l'entraînement rotatif étant appliqué contre ledit logement de guidage (62) pour commander l'inclinaison de la table tournante (5).
10. Dispositif selon la revendication 8, caractérisé en ce que le mécanisme réglable dans le sens vertical (35) se compose d'une pièce oscillante en U (67) sur les branches opposées et alignées de laquelle est montée, pivotante, la plaque de support (42) de la table tournante (5), en ce que la commande de l'inclinaison de la table tournante (5) suivant le premier axe (axe X) se fait par une commande de la position de pivotement de la pièce oscillante (67) par rapport à la plaque de support (42), à l'aide d'un moteur de pivotement (70), et en ce que la commande de l'inclinaison de la table tournante (5) autour du second axe (axe Y) se fait par une commande de la position de pivotement de la pièce oscillante (67) par rapport au châssis (21) de la machine, à l'aide d'un moteur d'entraînement (38) qui est disposé, dans les sens X et Z (20, 30), sur des chariots mobiles (1, 3), la poursuite de la déformation du profilé dans le sens Y se faisant grâce au fait que le rail profilé (8), avec le galet profilé (7) et la tête de serrage (10), effectue un déplacement commandé dans le sens Y.
11. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le réglage synchrone du galet profilé (7) par rapport à la table tournante (5) se fait grâce au fait que le galet profilé (7) est monté, pivotant, dans un premier chariot (47) apte à être approché radialement de la table tournante (5), que ce chariot (47) est guidé dans un second chariot (50) mobile de manière tangentielle par rapport à la table tournante (5) et que le second chariot (50) est mobile longitudinalement dans un rail profilé (8) sur lequel est montée la tête de serrage (10) et qui est monté, pivotant sur son axe longitudinal, sur le châssis (21) de la machine.
12. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le réglage synchrone du galet profilé (7) par rapport à la table tournante (5) se fait grâce au fait que le galet profilé (7) est monté mobile longitudinalement dans un rail profilé (8′) qui est lui-même monté rotatif sur son axe longitudinal (sens de la flèche 56) et qui est également monté pivotant (sens de la flèche 59) unilatéralement sur le châssis (21) de la machine.
13. Dispositif selon la revendication 11, caractérisé en ce que, pour empêcher un coincement entre le galet profilé (7) et le gabarit (12), le galet profilé (7) est monté sur le chariot (50), rotatif sur l'axe de rotation de l'arbre (4).
EP87905198A 1986-06-04 1987-06-02 Procede et dispositif pour le formage a froid de profiles en acier et metaux non ferreux Expired - Lifetime EP0268676B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87905198T ATE66393T1 (de) 1986-06-04 1987-06-02 Verfahren und vorrichtung zum kaltumformen von profilen aus stahl- und nichteisenmetallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3618701 1986-06-04
DE19863618701 DE3618701A1 (de) 1986-06-04 1986-06-04 Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen

Publications (2)

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EP0268676A1 EP0268676A1 (fr) 1988-06-01
EP0268676B1 true EP0268676B1 (fr) 1991-08-21

Family

ID=6302220

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Application Number Title Priority Date Filing Date
EP87905198A Expired - Lifetime EP0268676B1 (fr) 1986-06-04 1987-06-02 Procede et dispositif pour le formage a froid de profiles en acier et metaux non ferreux

Country Status (7)

Country Link
US (1) US4941338A (fr)
EP (1) EP0268676B1 (fr)
JP (1) JPS63503528A (fr)
KR (1) KR910006626B1 (fr)
AT (1) ATE66393T1 (fr)
DE (2) DE3618701A1 (fr)
WO (1) WO1987007537A2 (fr)

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DE3903298A1 (de) * 1989-02-03 1990-08-09 Spaeth Gmbh & Co Kg Stahlbau B Verfahren und vorrichtung zum kaltumformen von profilen aus eisen- und nichteisenmetallen durch raeumliches wickelrollbiegen
DE4033031A1 (de) * 1990-10-18 1992-04-23 Walter E Spaeth Raeumliches abroll-streckbiegeverfahren in zusammenhang mit einer dornbiegestation
IT1251934B (it) * 1991-10-16 1995-05-27 Macchine Curvatubi Crippa Agos Macchina curvatubi polifunzionale
DE4429180A1 (de) * 1994-08-17 1996-02-22 Schade Kg Biegevorrichtung für Profilstäbe
JP3589257B2 (ja) * 1995-06-30 2004-11-17 日本軽金属株式会社 形材の曲げ方法及び曲げ装置
AT408623B (de) * 1996-10-30 2002-01-25 Voest Alpine Ind Anlagen Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen
IT1290141B1 (it) * 1997-03-21 1998-10-19 Blm Spa Macchina per curvare materiale filiforme come tubi barre o profilati
NO20004059D0 (no) * 2000-08-11 2000-08-11 Norsk Hydro As Anordning og fremgangsmÕte ved fremstilling av langstrakte metallgjenstander
ITVI20010031A1 (it) * 2001-02-05 2002-08-05 S I L Met Spa Macchina per la curvatura a freddo mediante stiramento controllato diprofili allungati
CN101934313A (zh) * 2010-09-09 2011-01-05 吉林麦达斯铝业有限公司 轨道列车用大型铝型材数控拉伸弯曲成型机
DE102018215501A1 (de) * 2018-09-12 2020-03-12 Wafios Aktiengesellschaft Verfahren zur Herstellung eines Biegeteils und Biegemaschine zur Durchführung des Verfahrens
EP4180143A1 (fr) * 2021-11-16 2023-05-17 Itronics S.r.l. Appareil et procédé de cintrage avec étirage d'éléments métalliques
EP4180144A1 (fr) * 2021-11-16 2023-05-17 Itronics S.r.l. Appareil et procédé pour plier et étirer des éléments métalliques
EP4180142A1 (fr) * 2021-11-16 2023-05-17 Itronics S.r.l. Appareil et procédé pour plier et étirer des éléments métalliques

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Also Published As

Publication number Publication date
US4941338A (en) 1990-07-17
WO1987007537A3 (fr) 1988-01-14
DE3618701A1 (de) 1987-12-10
JPH0379091B2 (fr) 1991-12-17
KR910006626B1 (ko) 1991-08-29
KR880701145A (ko) 1988-07-25
EP0268676A1 (fr) 1988-06-01
DE3772333D1 (de) 1991-09-26
JPS63503528A (ja) 1988-12-22
ATE66393T1 (de) 1991-09-15
WO1987007537A2 (fr) 1987-12-17

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