WO2015144103A1 - Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre - Google Patents

Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre Download PDF

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Publication number
WO2015144103A1
WO2015144103A1 PCT/DE2014/000155 DE2014000155W WO2015144103A1 WO 2015144103 A1 WO2015144103 A1 WO 2015144103A1 DE 2014000155 W DE2014000155 W DE 2014000155W WO 2015144103 A1 WO2015144103 A1 WO 2015144103A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
shaped material
bending
bending mold
groove
Prior art date
Application number
PCT/DE2014/000155
Other languages
German (de)
English (en)
Inventor
Daniel STAUPENDAHL
Matthias Hermes
Erman A. Tekkaya
Original Assignee
Technische Universität Dortmund
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universität Dortmund filed Critical Technische Universität Dortmund
Priority to EP14723978.4A priority Critical patent/EP3122484A1/fr
Priority to PCT/DE2014/000155 priority patent/WO2015144103A1/fr
Publication of WO2015144103A1 publication Critical patent/WO2015144103A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
    • B21D7/162—Heating equipment
    • 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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/008—Bending wire other than coiling; Straightening wire in 3D with means to rotate the wire about its axis

Definitions

  • the invention relates to a method for producing curved wires, tubes, profiles or the like. From rod-shaped metallic materials according to the preamble of claim 1 and a corresponding device according to the preamble of claim 20.
  • form-bound methods are characterized by a very good accuracy compared to the purely kinematic method.
  • This group also includes die bending with a top and bottom die, which is also a good process for the dimensionally accurate bending of elongated components such as profiles and wires.
  • the invention is based on a method for the production of bent wires, tubes, profiles or the like of rod-shaped metallic materials. Such a generic method is further developed in that the rod-shaped material is moved into a guide device, wherein the guide means relative to a bending mold preferably three-dimensionally movably arranged and adjustable, and the moving rod-shaped material after passing through the guide means between the relative to the bending mold moving guide means and matingly shaped portions of the bending mold is progressively bent or deformed progressively along a bending line such that the rod-shaped material in its bent configuration gradually at least partially adapts to the bending mold and / or transforms it into the required workpiece geometry ,
  • the basic idea of the invention is, by a respective local deformation of the rod-shaped material between on the one hand the bending mold or appropriately shaped portions of the bending mold and moving relative to the bending mold guide means and due to the ongoing movement of the rod-shaped material gradually an incremental deformation of the rod-shaped material to produce the desired component geometry of the component to be produced
  • the continuously moving rod-shaped material emerging from the guide means due to the relative movement between the guide means and mating shaped portions of the bending mold and the own movement is placed on mating shaped portions of the bending mold and thereby forming in this local cross section of the rod-shaped material Tension condition bent or reshaped.
  • the movement of the rod-shaped material can in this case by holding the one end of the rod-shaped material in the Bending form can be realized, wherein the rod-shaped material is pulled through in a relative movement of the guide means and the bending mold by the guide means.
  • the rod-shaped material can be pushed by a positioned in front of the guide device feed device by the guide device.
  • the bending form in the present invention for supporting the rod-shaped material during flexure and optionally after flexural deformation serves to stabilize and calibrate the deformed rod-shaped material, whereas the actual flexural deformation is primarily due to the force effects and consequent stress conditions in the local portion of the reshaped material rod-like material is generated due to the cooperation of movement of the rod-shaped material and the relative movement between guide means and mating shaped portions of the bending mold.
  • the deformation of the bar-shaped material is much freer and more flexible than with the conventional formed bending processes, and at the same time the complexity of the movement during the bending process is lower than in the conventional kinematic bending processes, so that even very complex workpiece geometries are easily produced by the method according to the invention can be.
  • the inventive method is particularly suitable for the production of small quantities of bent components of rod-shaped metallic materials.
  • the originally preferably straight rod-shaped material is each locally deformed when hitting portions of the bending mold and due to the locally adjusting stress state in this small portion of the rod-shaped material as desired, being characterized by the current feed of the rod-shaped material and the relative movement between Bending form and guide means nach speakde sections of the rod-shaped material also locally transform and in sum gradually from the originally straight rod-shaped material, the desired three-dimensional geometry of the component to be produced is formed.
  • a deformation produced in this way is stabilized and possibly calibrated by the geometry of the bending form, so that a highly accurate geometry of the component produced in this way can be achieved after the complete transformation of the respective section of the rod-shaped material.
  • the rod-shaped material is conveyed into the guide device via a feed device, which is preferably arranged in front of the guide device, whereby an active conveying of the rod-shaped material can be achieved.
  • a feed device which is preferably arranged in front of the guide device, whereby an active conveying of the rod-shaped material can be achieved.
  • compressive stresses are exerted on the rod-shaped material, which can cause an improvement of the deformation of the rod-shaped material in the forming zone.
  • the deformation can be influenced as desired.
  • the deformation of the rod-shaped material by a superposition of tensile stresses or compressive stresses due to the advancement of the rod-shaped material and bending stresses due to the local interaction between rod-shaped material and at least individual sections of the bending mold.
  • This locally prevailing state of stress can be influenced within wide limits by the regulation of the advancing movement of the rod-shaped material and the relative movement between the bending form and the guide device, and in the sense of a dimensionally accurate production of the material. desired component can be optimized. Due to the local stress state, it can also be achieved that the deformed rod-shaped material fits precisely into the bending mold and thus the deformation takes place very uniformly by adapting to the analogous shape and dimension memory of the bending mold.
  • the bending form, matching the cross-sectional shape of the rod-shaped material to be bent has a groove-like or groove-like depression which corresponds in its geometry to the workpiece geometry to be produced.
  • the cross section of the deformed rod-shaped material can insert well and thus be prevented that due to spring-back or local evasive movements dimensional and dimensional inaccuracies occur.
  • the groove-like or groove-like depression can likewise be formed in three dimensions in accordance with the three-dimensional workpiece geometry to be produced.
  • the groove-like or groove-like depression is dimensionally matched to the cross section of the deformed rod-shaped material such that the groove-like or groove-like recess receives and supports the deformed rod-shaped material. It is conceivable that the groove-like depression is formed in sections or continuously as a machined, preferably milled groove, which can also be produced on the same machine, preferably in the same clamping on which the bending deformation of the rod-shaped material takes place. This eliminates Umspannvortician and thus the source of inaccuracies.
  • the bending mold and / or the groove-like depression is formed in sections or completely from discrete support points forming, mutually adjustable arranged individual elements which interact with the rod-shaped material to be formed.
  • the groove-like depression can be resolved into discrete points or sections which, as in the case of a nail board, provide individual support points for the deformation of the rod-shaped material with which the rod-shaped material can interact locally. If these individual support points are arranged to be linearly adjustable with respect to one another, then with only one single bending form configured in this way, speaking adjusting the position of the support points are each provided a variety of bending forms.
  • the bending mold is formed from at least one appropriately to the movement of the guide means moving, point or area acting counter-holder, which interacts locally with each of the rod-shaped material to be formed.
  • a point- or planar-like counter-holder can be approximately in the form of a roll, a stamp or the like. Formed and move relative to the guide means, so that the counter-holder acts locally in the region of the deformation as a bending mold, after completion of the local Forming the deformed rod-shaped material is no longer or only partially supported. In this way, a large number of workpiece geometries can be produced with such an anvil solely on the basis of its relative movement relative to the guide device, without having to produce an adapted bending shape in advance.
  • Umform s the rod-shaped material when guide means and bending form in the bending deformation of the rod-shaped material relative to each other, preferably a relative displacement in up to three spatial directions to each other.
  • guiding means and bending mold can be arranged in a plane, e.g. be arranged movable by means of a coordinate table, wherein a vertical distance adjustment between the guide device and the bending mold can influence the distance between the guide device and the bending mold and thus the exit behavior of the rod-shaped material from the guide device.
  • a further improvement in the generation of the local stress conditions and thus the desired deformation can be achieved if the guide device and the bending mold can be pivoted relative to one another about at least one further pivot axis.
  • further kinematic influencing variables result.
  • the locally reshaped rod-shaped material can impinge on the bending mold at an angle of inclination and thus, for example, the initial application of the rod-shaped material to be formed to the bending mold can be facilitated or at complex deformation sites by the additional pivoting the bending transformation can be improved or facilitated.
  • the rod-shaped material is advanced during the passage of the guide means of the feed device linearly in the direction of the bending mold. This results in simple geometric conditions in the advancing movement of the rod-like material before hitting the bending mold.
  • the rod-shaped material is pre-bent at the beginning of the bending deformation and inserted into the bending mold.
  • the deflection of the rod-shaped material to be formed can thereby be made reproducible and the entire deformation can be standardized.
  • a further improvement of the deformation of the rod-shaped material can be achieved that the rod-shaped material is held at least at the beginning of bending deformation and / or at certain points of the bending form positive and / or non-positive in the bending mold, preferably positively clamped o- the form-fitting in Recordings of the bending mold is inserted.
  • the beginning or certain sections of the rod-shaped material for example, at particularly difficult to transform technical parts of the component geometry to be produced, additionally stabilized and thus increases the dimensional accuracy of the component to be produced.
  • an additional Torsionsbelastung is applied to the reshaped rod-shaped material through which a further Umformungsbelastung, preferably applied in the form of shear stresses on the rod-shaped material between the guide device and bending mold.
  • a further Umformungsbelastung preferably applied in the form of shear stresses on the rod-shaped material between the guide device and bending mold.
  • the material flow of the rod-shaped material can be positively influenced by the additional torsion in the direction of the curvature during the forming process.
  • the shear stresses can be applied to the rod-shaped material, for example, by rotating the rod-shaped material in the feed device.
  • the rod-shaped material is heated prior to the bending deformation for influencing the yield strength of the rod-shaped material in order to facilitate the bending deformation.
  • the heating may e.g. conductively and / or inductively and / or by gas heating and / or by means of laser beam, whereby locally the appropriate amount of heat is introduced into the rod-shaped material shortly before the local deformation of the rod-shaped material.
  • the heating of the rod-shaped material takes place by means of a heating device as a function of the respective section of the rod-shaped material to be reshaped and of the formed workpiece having a different temperature profile.
  • a higher local heating of the rod-shaped material to be formed may make sense, in locally less reshaped sections, on the other hand, a correspondingly lower heating or even no heating is sufficient.
  • the heating of the rod-shaped material may require that the guide means be cooled during the forming of the rod-shaped material.
  • the bent rod-shaped material is cooled and / or tempered after bending in the bending mold.
  • appropriate local Cooling can be prevented on the one hand that still warm and thus possibly too soft formed rod-shaped material is adversely affected by the subsequent local deformation of other sections in shape and position.
  • the material behavior of the formed bar-shaped material can also be specifically influenced in the sense of a tempering or hardening by targeted cooling and thus the component behavior of the formed bar-shaped material, for example for the production of spring properties or the like, can be positively influenced overall. This eliminates the need for subsequent separate compensation or heat treatment processes.
  • the invention further relates to a device for the production of bent wires, tubes, profiles or the like.
  • the device comprises a guide device, wherein the guide means relative to a bending mold is preferably arranged three-dimensionally movable and adjustable and the rod-shaped material is continuously movable in the direction of the bending mold such that the rod-shaped material between the bending mold and the guide means moving relative to the bending mold incrementally progressively bent or deformed along its bending line in each case locally such that the rod-shaped material in its bent configuration at least Gradually adapted gradually to the bending form and / or converted into the required workpiece geometry.
  • Many of the properties and advantages of the device according to the invention correspond to those properties and advantages of the method according to the invention, therefore reference is made here accordingly to the above features and properties of the method.
  • the device may have a preferably arranged in front of the guide device feed device, which advances the rod-shaped material continuously in the direction of the bending mold. It is advantageous with regard to the dimensional accuracy of the formed rod-shaped material if the deformed geometry of the rod-shaped material is arranged with clamped down holders along the bending form. As a result, the incre- mentally deformed rod-shaped material is secured in the bending mold and can not change dimensionally and formally in the clamped areas by subsequent transformations.
  • the feed device has a roller-like or pincer-like feed.
  • 1a is a schematic representation of the basic structure of a first embodiment of the device according to the invention for the production of bent wires, tubes, profiles or the like from rod-shaped metallic materials,
  • FIG. 1 b shows another embodiment of the device according to the invention with a feed device for conveying the rod-shaped metallic material
  • FIG. 2 a shows a modified embodiment of the device according to FIG. 1 b with additional application of a torsional load to the rod-shaped material
  • FIG 2b - a plan view of the device according to Figure 2a with additional
  • Figure 3a-3b exemplary representation of a sequence of bending deformation according to
  • FIG. 5 shows a further modified embodiment of the device according to FIG. 1 a with an additional pivoting movement of the guide device about a pivot axis during the insertion of the rod-shaped material into the bending mold at the beginning of the bending deformation as well as a local clamping of the starting piece of the rod-shaped material,
  • Figure 6 an alternative embodiment of the insertion of the rod-shaped
  • FIGS. 7a-7c show a schematic stage plan at some stations of a bending forming according to the method according to the invention for producing a three-dimensionally curved component
  • FIG. 1a shows the basic structure of a device according to the invention for producing curved wires, tubes, profiles or the like from bar-shaped metallic materials 1 which is suitable for carrying out the method according to the invention.
  • the rod-shaped material 1 comes from above the device such as a wound wire coil, not shown, and passes, for example, a straightening station, also not shown, in which the rod-shaped material 1 has just been directed. It is also conceivable to use directly straight rod-shaped material 1 in defined lengths.
  • Such fed bar-shaped material 1 passes through a guide device 2, which in the simplest case is a kind of socket with an opening diameter which is slightly larger than the respective outer diameter or the outer dimensions of the rod-shaped material 1 is.
  • the bar-shaped material 1 is conveyed, as explained below, in the direction of the bending mold 3 arranged at a distance from the guide device 2 and protrudes from the guide device 2 on the underside.
  • the guide device 2 is in this case by not shown moving means such. Feed drives or the like. Slidably relative to the bending mold 3 in two or three mutually perpendicular axes or equivalent kinematics and / or arranged rotatable by respective axes of rotation, so that the rod-shaped material 1 strikes the bending mold 3 during its movement at a desired location.
  • the distance between the bending mold 3 and guide means 2 and thus the free bending length of the rod-shaped material 1 can be adjusted appropriately.
  • the guide device 2 in the direction of movement 16 is approximately parallel to the groove or groove-shaped recess 9 (this is indicated by the change in position of the guide means 2 from the dashed starting position in the position shown by solid lines), so bending stresses 8 in the cross-section of the rod-shaped Material 1 caused that can be used to a change in shape of the rod-shaped material 1 in the form of a targeted bend.
  • the desired workpiece is ultimately created by moving the groove-shaped or groove-shaped recess 9 with the rod-shaped material 1, wherein the groove is moved away - or groove-shaped recess 9 by tightening the rod-shaped material 1 in the direction 5 and the simultaneous relative movement between guide means 2 and bending mold 3 is defined.
  • FIG. 1a an expanded embodiment is shown in FIG.
  • the rod-shaped material 1 comes further from above the device such as a wound wire coil, not shown, and passes, for example, a straightening station, also not shown, in which the rod-shaped material 1 has just been directed. It is also conceivable to use directly straight rod-shaped material 1 in defined lengths.
  • Such fed rod-shaped material 1 passes above the guide means 2, a feed device 4, which is here indicated as two counter-rotating rollers 4, but also, for example, a forceps feed or the like.
  • the rod-shaped material 1 is pushed by the advancing device 4 in the direction of the spaced apart from the guide device 2 arranged bending mold 3 and protrudes from the underside of the guide device 2 out.
  • the guide device 2 is in this case likewise displaceable relative to the bending mold 3 in two or even three mutually perpendicular axes or an equivalent kinematics and / or rotatable by respective axes of rotation by not further shown moving means such as feed drives or the like., So that the rod-shaped material 1 impinges on the bending mold 3 at the feed movement at a desired location.
  • the distance between the bending mold 3 and guide means 2 and thus the free bending length of the rod-shaped material 1 can be adjusted appropriately.
  • the bending mold 3 is provided with the groove or riNenförmigen recess 9 and hits the rod-shaped material 1, the bending mold as described in this groove or riNenförmigen recess 9, the rod-shaped material 1 in a forming area, as in the figure 1 b indicated with the item number 11, bent and locates locally in the groove or groove-shaped recess 9 a. Due to the further advance of the rod-shaped material 1 in the feed direction 5 and the simultaneous relative movement between the guide device 2 and bending mold 3, another rod-shaped material 1 is bent directly following the bent portion 11 of the rod-shaped material 1, and the supplied rod-shaped material 1 is thus successively bent and transformed incrementally.
  • the result is by the shutdown of the groove or groove-shaped recess 9 with the rod-shaped material 1 ultimately the desired workpiece, the departure of the groove or grooved recess 9 by the advance of the rod-shaped material 1 in the feed direction 5 and simultaneous relative movement between the guide device 2 and bending mold 3 is defined.
  • this incremental procedure makes it possible to produce the desired geometry of a bent part with only slight preparation of the bending mold 3 from rod-shaped material 1 by successive, quasi-successive, and overall incremental forming of respectively smaller sections 11 of the rod-shaped material 1 manufacture, whereby the method is particularly suitable for small to be manufactured quantities of such bent parts that would not justify high tooling costs.
  • FIG. 2 a shows a modified embodiment of the device according to FIG. 1 b with additional application of a torsional load 14 to the bar-shaped material 1.
  • This additional torsional load 14 in the direction of rotation 13 is applied to the bar-shaped material 1, for example, via a twisting device cooperating with the feed device 4 and leads to further stresses in the form of shear stresses 15 along the free length of the rod-shaped material 1.
  • Such shear stresses 15 can be used to further favorably influence the deformation of the rod-shaped material 1 in the forming zone 11, since these shear stresses 15 contribute to a targeted and directed earlier flow of the rod-shaped material 1 in the forming zone 11. To simplify matters, the overall deformation is improved by the shear stresses 15.
  • torsional load 14 of the rod-shaped material 1 can favorably influence the bending deformation in the forming zone 11 and each locally deformed rod-shaped material 1 bends figuratively spoken more willing around the corner. This contributes to the fact that due to such superimposed stress states in the local forming zone 1 1 of the rod-shaped material 1 even tight bends can be performed easily and reproducibly, even without causing large spring backs of the formed rod-shaped material 1.
  • FIGS. 3a and 3b the deformation already shown in FIG. 2b is shown once again in two stages, once just before the corner (FIG. 3a) and once in the corner (FIG. 3b) with additionally applied torsional load.
  • FIG. 4 shows a modified embodiment of the device according to FIG. 1b with additional heating of the rod-shaped material 1 via a heating device 18 here in the form of an inductively operating heating coil, which is arranged shortly below the guide device 2 and through which a modified embodiment of the device according to FIG 1b passes with additional heating of the rod-shaped material 1 therethrough.
  • a heating device 18 here in the form of an inductively operating heating coil, which is arranged shortly below the guide device 2 and through which a modified embodiment of the device according to FIG 1b passes with additional heating of the rod-shaped material 1 therethrough.
  • Conceivable in addition to an inductive heating and a conductive heating, heating with a gas flame or heating by means of laser.
  • a temperature field 21 is formed in the bar-shaped material 1, the configuration of which is monitored, for example, by a pyrometer or the like.
  • Temperature measuring device 17 and can be used to control and regulate the heating device 18.
  • the forming in the local forming zone 11 is further simplified, as this causes the yield point of the standard gen-shaped material 1 set down and the flow during the forming is facilitated.
  • FIG. 5 shows another embodiment of the device according to the invention according to FIG. 1a in a detail, in which an additional pivotal movement of the guide device 2 about an additional pivot axis (not shown) along the pivot direction 22 is possible.
  • the rod-shaped material 1 can be inserted relative to the bending mold 3 or to the groove or groove 9 in the bending mold 3 at an angle in the groove or groove 9, which in particular for the initial insertion of the rod-shaped material 1 in the region of the beginning 27th of the rod-shaped material 1 is helpful.
  • a targeted deflection of emerging from the guide device 2 rod-shaped material 1 can be achieved, whereby the deformed in the forming 11 rod-shaped material 1 ' selectively inserted into the groove or groove 9 and then there with a hold-down 10 in the clamping direction 23 on the deformed rod-shaped material 1 'is pressed, can be secured.
  • a pivoting 22 can be selectively used by, for example, one or more pivot axes in order to positively influence the deformation of the rod-shaped material 1 in the forming zone 11 when the groove or groove 9 in the bending mold 3. Due to the relative angular adjustment of the rod-shaped material 1, the geometric starting position during bending of the rod-shaped material 1 is already improved.
  • FIG. 6 a different type of start of the bending deformation of the bar-shaped material 1 in the bending mold 3 is shown in a kind of stadia plan with two different times.
  • the further transformation of the deformed rod-shaped material 1 ' to begin in the bending mold 3 a suitable for the initial region 27 of the rod-shaped material.
  • 1 formed bore or recess 24 may be provided in the form of an insertion, in which the forward of the feed device 4 rod-shaped material 1 is inserted vertically by the feed movement in the feed direction 5.
  • FIGS. 7a to 7c the sequence of the method according to the invention on a more realistic three-dimensionally curved component is again represented in the form of a type of spectacle, the three-dimensionally curved bending form 3 with the grooves or grooves 9 being shown in FIG rod-shaped material 1 is to be inserted in the bending deformation according to the invention.
  • FIG. 7b a later time of deformation to the spectacle-like curved component can be seen in a highly schematic manner, in which a portion of the deformed rod-shaped material 1 ' can already be seen in the groove 9 of the bending mold 3 Bar-shaped material 1 from the guide device 2 exits on the underside and as already described above in the relative movement between the guide device 2 and bending mold 3 is placed in the groove or groove 9.
  • FIGS. 8a and 8b show schematic examples of the design of movement mechanisms for carrying out the relative movement between the bending mold 3 known from FIG. 7 and the guide device 2 during the bending deformation of the rod-shaped material 1 into the reshaped configuration 1 ' .
  • a movement device with three pivot axes 28, for example in the form of a simple industrial robot is indicated for this purpose as a movement device 6.
  • the movements of the guide device 2 can be performed approximately by a three-axis arrangement of linear axes 28 such as in a gantry robot.
  • all other combinations of axle arrangements are conceivable, and this depends mainly on the geometry of the component to be produced and thus on the geometry of the bending mold 3.
  • FIG. 8a a movement device with three pivot axes 28, for example in the form of a simple industrial robot, is indicated for this purpose as a movement device 6.
  • the movements of the guide device 2 can be performed approximately by a three-axis arrangement of linear axes 28 such as in a gantry robot.
  • FIG. 8c shows, as an alternative to the guidance of the rod-shaped material 1, a guide plate 25 with a continuous guide slot 26 whose contour corresponds to the contour of the groove 9 and the upper side of the bending mold 9 is arranged.
  • this can be supported in the guide slot 26 and therefore more accurately guided as described insert into the groove 9.
  • FIGS. 9a to 9c show examples of different possibilities of support and guidance of the rod-shaped material 1 during the bending deformation.
  • Bending inside arranged support rollers 29, as shown in Figure 9a just in the embodiment of the device according to the invention without feed device 4 can favor the flow of material of the bent rod-shaped material 1.
  • the support roller 29 supports in this arrangement according to Figure 9a, the application of the rod-shaped material 1 in the groove 9 of the bending mold 3.
  • the rod-shaped material 1 support only locally, as can be seen in Figures 9b and 9c. In this case, as indicated in FIG.
  • a roller 29, which is fixed to the guide device 2 via a lever 30, is positioned relative to the guide device 2 in such a way that it replaces the region of the bending mold 3 involved in the forming process and is located on the roller Can support 9 transforming rod-shaped material 1.
  • the support of the forming rod-shaped material 1 takes place only in the region of the free end 27 with respect to the fixed bending mold 3, but subsequently on the roller 29th
  • the bending mold 3 is subdivided into different segments, preferably precisely in the regions in which large deformations of the deformed rod-shaped material 1 have to be produced. This is how the free end can be 27 of the rod-shaped material 1 are clamped in the region of the blank holder 10 as already described and are then bent along the bending line of the rod-shaped material 1 on supports 31 with suitably curved sections. These supports 31 replace or form at these curved portions of the deformed bar-shaped material 1 the bending shape.
  • a roller 29 can not only be used to support the rod-shaped material 1 in the region of the forming zone 12 according to FIG 9a, but can also be used directly to improve the deformation by the roller 29, which in turn via a lever 30 on the guide device is determined, exerts a force on the rod-shaped material 1 and thereby the rod-shaped material 1 in addition to the support and virtually on the opposite side of the bending mold 3 with formed. In this way, the rod-shaped material 1 can be additionally stabilized during the forming.

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

Abstract

L'invention concerne un procédé de fabrication de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre (1), selon lequel le matériau en forme de barre (1) est déplacé dans un dispositif de guidage (2). Le dispositif de guidage (2) est agencé de manière mobile de préférence dans trois dimensions par rapport à un moule à cintrer (3) et peut être ajusté, et le matériau en forme de barre (1) en déplacement, après passage du dispositif de guidage (2) entre le dispositif de guidage (2) se déplaçant par rapport au moule à cintrer (3) et des parties (9) du moule à cintrer (3) de forme appropriée, est cintré ou déformé de manière appropriée en continu par incréments le long d'une ligne de cintrage (16) de telle manière que, dans sa configuration cintrée (1'), le matériau en forme de barre (1) s'adapte progressivement au moins par endroits progressivement au moule à cintrer (3) et/ou se déforme à la géométrie voulue de la pièce. L'invention concerne par ailleurs un dispositif correspondant.
PCT/DE2014/000155 2014-03-25 2014-03-25 Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre WO2015144103A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14723978.4A EP3122484A1 (fr) 2014-03-25 2014-03-25 Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre
PCT/DE2014/000155 WO2015144103A1 (fr) 2014-03-25 2014-03-25 Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre

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Application Number Priority Date Filing Date Title
PCT/DE2014/000155 WO2015144103A1 (fr) 2014-03-25 2014-03-25 Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre

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WO2015144103A1 true WO2015144103A1 (fr) 2015-10-01

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DE102017004935A1 (de) 2017-05-18 2018-11-22 Technische Universität Dortmund Heizvorrichtung zur Erzeugung von Joule'scher Wärme bei der Erwärmung von vorzugsweise dünnwandigen Blechteilen mittels mittelfrequentem Strom
CN109909335A (zh) * 2019-03-15 2019-06-21 株洲汉和工业设备有限公司 一种立式数控感应加热弯管机
CN110170557A (zh) * 2019-04-23 2019-08-27 南京工程学院 一种管材拟合渐进成形上压模控制系统及方法
CN111565910A (zh) * 2018-02-22 2020-08-21 三樱工业株式会社 向弯曲模嵌入管的管自动嵌入装置
CN115156351A (zh) * 2022-09-07 2022-10-11 江苏伟同如自动化设备有限公司 一种金属灯杆自动折弯设备

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EP1419797A1 (fr) * 2002-11-13 2004-05-19 Nippon Cable System Inc. Méthode de fabrication d'un fil de guidage médical
EP1731241A1 (fr) * 2005-06-06 2006-12-13 Asahi Intecc Co., Ltd. Moule pour chauffage ainsi procédé de fabrication d'un fil de guidage utilisant ce moule
EP2266720A2 (fr) * 2009-06-17 2010-12-29 ThyssenKrupp Steel Europe AG Dispositif et procédé de pliage à forme libre de profilés

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Publication number Priority date Publication date Assignee Title
DE102017004935A1 (de) 2017-05-18 2018-11-22 Technische Universität Dortmund Heizvorrichtung zur Erzeugung von Joule'scher Wärme bei der Erwärmung von vorzugsweise dünnwandigen Blechteilen mittels mittelfrequentem Strom
CN111565910A (zh) * 2018-02-22 2020-08-21 三樱工业株式会社 向弯曲模嵌入管的管自动嵌入装置
CN111565910B (zh) * 2018-02-22 2022-07-22 三樱工业株式会社 向弯曲模嵌入管的管自动嵌入装置
CN109909335A (zh) * 2019-03-15 2019-06-21 株洲汉和工业设备有限公司 一种立式数控感应加热弯管机
CN109909335B (zh) * 2019-03-15 2024-01-23 株洲汉和工业设备有限公司 一种立式数控感应加热弯管机
CN110170557A (zh) * 2019-04-23 2019-08-27 南京工程学院 一种管材拟合渐进成形上压模控制系统及方法
CN115156351A (zh) * 2022-09-07 2022-10-11 江苏伟同如自动化设备有限公司 一种金属灯杆自动折弯设备

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