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WO2009036871A1 - Procédé et dispositif pour cintrer ou laminer linéairement des profilés dotés de mini-corps de laminage-roulage sans axe - Google Patents

Procédé et dispositif pour cintrer ou laminer linéairement des profilés dotés de mini-corps de laminage-roulage sans axe Download PDF

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Publication number
WO2009036871A1
WO2009036871A1 PCT/EP2008/007067 EP2008007067W WO2009036871A1 WO 2009036871 A1 WO2009036871 A1 WO 2009036871A1 EP 2008007067 W EP2008007067 W EP 2008007067W WO 2009036871 A1 WO2009036871 A1 WO 2009036871A1
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WO
WIPO (PCT)
Prior art keywords
bending
profile
rolling
roller
bent
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.)
Ceased
Application number
PCT/EP2008/007067
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German (de)
English (en)
Inventor
Walter Erich SPÄTH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PATENTGEMEINSCHAFT MARANATHA
Original Assignee
PATENTGEMEINSCHAFT MARANATHA
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 PATENTGEMEINSCHAFT MARANATHA filed Critical PATENTGEMEINSCHAFT MARANATHA
Publication of WO2009036871A1 publication Critical patent/WO2009036871A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/08—Dies; Selection of material therefor; Cleaning thereof with section defined by rollers, balls, or the like
    • 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
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by 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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B21D7/028—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and altering the profile at the same time, e.g. forming bumpers
    • 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
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B21D7/085—Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/10—Bending tubes using mandrels or the like by passing between rollers
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/12—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die
    • B21D9/125—Bending tubes using mandrels or the like by pushing over a curved mandrel; by pushing through a curved die by pushing through a curved die

Definitions

  • the invention relates to a method and a device for bending or for linear rolling of profiles with axleless Minirollwalz stresses according to the preamble of claim 1.
  • the invention is based on a prior art, as described in EP 0 910 486 B1.
  • a method and an apparatus for bending profiles is described, wherein in the embodiment according to the figures 1 to 2, a so-called free-form bending takes place, which means that the bending process of any profile takes place in that on the outer circumference of the profile to be bent on the one side applies a central role and on the other side a rolling roller with a smaller diameter rolls out the profile, wherein a mandrel shaft is arranged in the interior of the profile.
  • the support of the profile in the bending zone is effected by support rollers arranged outside the bending zone and also by a bending roller arranged on the bending outfeed.
  • the bending contour of the profile is determined by the rolling process of the rolling roller, which is arranged opposite the center roller. Therefore, the bending roller arranged at the outlet has only one control / measuring function in order to also control a certain, previously rolled-out contour and to compensate for tolerances in the bending contour.
  • the disadvantage with the known prior art is that very high rolling pressures are required on the rolling roll in the case of large-sized rolling rolls, with the axial bearings of such rolling rolls additionally being heavily loaded.
  • the same disadvantage also occurs when so-called contour bending takes place instead of free-form bending, which means that the profile to be bent is bent around a bending core / bending template. This is for example in FIGS. 14ff. EP 0 910 486 B1.
  • the rolling roller resting on the outer circumference has to apply a high specific surface pressure to the outer circumference of the profile to be bent in order to allow the desired volume displacement in the outer region of the profile to be bent.
  • the invention is therefore based on the object, a method and apparatus for bending profiles so that at significantly lower tool volume, lower engine power and less wear in the quality of improved bending of profiles is achieved.
  • the invention is characterized in that at least in the bending zone axially guided mini roll rollers are arranged.
  • axleless mini roll rollers used now produce a very small rolling space, i. H. this is available and forms the bending zone, whereby the structure flow is only immediately transformed instantaneously on this extremely short distance, without incoming microstructural changes leading to hardening and thereby worsening the bending result.
  • mini roller mill body is understood here to mean different roller rolling bodies which, in any case, are substantially smaller in diameter than the conventional rolling rolls.
  • the conventional, axle-guided rolling rolls had a minimum diameter of about 120 mm. This is where the invention comes in, which provides that a plurality of miniature rolling rollers with a diameter in the range of about 2 mm to 100 mm evenly distributed in the bending zone are arranged on a plane and evenly applied to the outer periphery of the profile to be formed.
  • mini roll rollers described here are all guided without axis, because axes would not withstand the significant specific surface pressures arising here. They are therefore guided in corresponding storage beds of a tool and are held there rotatably axleless.
  • a mini rolling mill body are understood in particular spherical body, barrel body or cylinder body.
  • the z. B. are designed as a cylindrical roller, which are also housed axially in associated storage beds.
  • profiled contour roller body such. B. have a double cone contour (diabolo contour) or differently contoured roller rolling body, which invest on the outer periphery of a corresponding contoured profile and are also rotatably mounted.
  • axle bearings are required when complicated contours of KonturrollwalzMechs are required, which can no longer be modeled in a storage bed for itself there freely rotating roller body.
  • the profiled miniature contour roller rolling bodies have miniaturized dimensions and in particular in the waist region (in a double cone design) also have the diameter of about 2 mm to 100 mm, so at high specific surface pressure an extremely high surface pressure on the Can apply outside of the profile.
  • the miniature rolling rollers therefore, very small penetration depths can now be achieved in the profile of even very hard profile materials, which was not possible with the large axis-guided rolling rollers. It arise with the said miniature rolling rollers very high surface pressures at very low pressure.
  • the invention is not limited to a method and apparatus for bending profiles with non-agglomerate mini roll rollers, but also provides a method and apparatus for linearly rolling profiles with such spineless mini roll rollers.
  • the local wall thickness out of material saving reasons and thus rolled out is diluted, while in the other areas, where a high static load acts on the profile, a thickened wall thickness, z. B. an original wall thickness or compared to the thinned wall areas thicker wall thickness is maintained.
  • the first embodiment which has been described above, assumes that said miniature rolling mill rolls abut in one plane (in the bending-forming zone) on the outer periphery of the profile to be bent.
  • the invention is not limited to that the miniature rolling rollers are in one plane in the bending-forming zone.
  • This plane means a vertical plane to the profile longitudinal axis, and in this plane, the Biegeumformzone is formed.
  • the Auswalzzone is arranged for the linear profiling of profiles.
  • the invention now provides that the miniature roller rolling bodies are not only located in one plane, but they can also be arranged one behind the other in the longitudinal direction of the profile. There are different possibilities.
  • the present invention also describes in great detail below that the miniature rolling mill rolls are arranged in alignment one behind the other and each occupies a certain depth of penetration on the profile to be rolled, so as to distribute a total penetration depth to a plurality of rolling mill rolls arranged one behind the other and aligned one behind the other.
  • each miniature roller mill body has a different penetration depth than the miniature rolling roller body lying exactly in the longitudinal direction at the front or the rear.
  • the miniature roller rolling bodies seen in the longitudinal direction of the profile are one behind the other offset, that is, for. B. work on a gap.
  • the miniature rolling rollers are arranged on the circumference of the profile and enclose the profile in a certain area and in a second plane, which has a distance from the first plane in the direction of the longitudinal axis of the profile, further miniature rolling rollers are arranged, which is offset to the first-mentioned plane of the miniature rolling mill, which arranged in this plane
  • Miniature rolling mill body are offset to the first-mentioned miniature rolling mill bodies on gap.
  • multi-level miniature rolling mill bodies refer to all the bending methods described above and below, and thus are generally within the scope of the present invention.
  • MiniaturrollwalzSystem für usue are arranged in tool shanks, and these in turn are part of a tool set for bending or linear profiling of the profile according to the invention.
  • axle-guided bending roller or roller roll has the disadvantage that no fine tuning in the Auswalzung is possible due to the relatively large diameter of this bending or rolling roller.
  • the invention is not limited thereto.
  • the invention provides that the miniature roll rolling bodies are arranged successively one behind the other, d. H. they are arranged in different planes parallel to each other in the bending zone. This causes the rolling process to take place gradually. While the next closest to the inlet side miniature roller mill experience only a first small depth of penetration into the profile, press the immediately adjacent further roll profile roll already by a further higher amount in the profile in order to increase the penetration depth, the penetration depth for each Level is the same. It can thus be arranged lying one behind the other one-, two- or three-stage tools.
  • tool shanks which have a bearing bed formation at the front end for receiving roll rolling bodies.
  • These rolling rollers can have different shapes and contours, z. B. cylindrical, rounded, spherical or simple to multiply formed.
  • the shape of this roll rolling body depends on the outer contour of a profile cross-section.
  • Roll rolling bodies are present. Such supports are in turn arranged in the bearing bed support rollers, which are load-transmitting on the outer circumference of the
  • Such support bodies can be either balls, cylindrical pins and needle pins. They can be stored without axle or be stored on axles. This considerably reduces the rolling resistance.
  • the rolling rollers therefore normally have a journal bearing diameter of between 40 and 200 mm in the prior art axle diameter.
  • the contour of the bearing bed can be adapted to the outer contour of the profile to be bent. This results in a very significant reduction of the bearing surface due to the miniature rolling bodies used on a profile surface auswalzende, because there is a direct relationship between the specific pressure surface and the rolling forces. As stated earlier, in a prior art rolling mill having a diameter of 200 mm, 80 tons of rolling force is required. In contrast, if rolling rolls of z. B. 5 mm, the rolling force can be reduced by a factor of 40, resulting in 2 t of rolling force with the same penetration depth.
  • the tool shank in the front bearing bed roll rollers according to the invention are arranged, the tool shank can be made so small that it can be used in place of any arbitrary axle-guided roller. Therefore, conventional bending machines with axle-guided rolling rolls can be simply supplemented or replaced by the tool shanks according to the invention with bearing beds formed on the front and miniature roller rolling bodies rotatably mounted there. This is a considerable appreciation of conventional profile bending machines possible.
  • the invention consists in that said tool shanks can be used with frontally arranged storage beds and free-guided miniature rolling rollers for any bending process.
  • a profile stretch bending can be completely replaced by using the miniature rolling mill body according to the invention.
  • the invention is not limited to replacing only the rolling roll by a tool shank with a front bearing bed and freely supported roller rolling bodies arranged therein.
  • the invention also provides that optionally the support roller and / or the center roller and / or the bending roller are replaced by a tool shank on which in turn a front bearing bed is arranged there with miniature roller rolling bodies.
  • the entire bending process can take place in this miniaturized version, which means that the previously large-sized bending and support rollers can be significantly reduced in diameter and replaced by small-sized tool shanks with rotatably mounted front miniature rolling mill. This results in the possibility of replacing the entire axis-guided bending technique by axleless roller rolling body.
  • z. B. are known as ceramic materials. Instead of the use of ceramic materials and other high pressure resistant materials can be used, such. B. ceramic composite or high strength tool steels.
  • a mini-rolling mill causes the bending process and / or the linear roller burnishing; Volume shifts determine the modern and efficient profile bending of the future.
  • Mathematical calculation formulas ensure dimensionally accurate bending quality and a static profile cross-section optimization for lightweight construction.
  • MiC free-form benders (2d + 3d) 3.
  • Figure 1 schematically a perspective plan view of a device for free-form bending
  • FIG. 2 schematically shows an enlarged illustration of a roll bending process or free-form bending process with the use of miniaturized roll rolling bodies 3 shows a schematic front view of a section through the arrangement of Figure 2
  • Figure 4 schematically a section through the upper part of the device of Figure 3 showing the arrangement of rolling rollers in the
  • Figure 5 the front view of the bending tools in a free-form bending machine
  • FIG. 6 shows schematically an end view of the tool shanks for bending an irregular profile cross section
  • FIG. 7 shows an embodiment modified with respect to FIG. 6
  • FIG. 8 an embodiment modified relative to FIG. 7
  • FIG. 9 an embodiment modified relative to FIG. 8
  • FIG. 10 shows a further embodiment, which is modified with respect to FIG. 9 with an axis-guided contoured profile rolling element
  • FIG. 11 shows a modification with respect to FIG. 10
  • FIG. 12 a representation similar to FIG. 5 for illustrating further machine details
  • FIG. 13 a plan view of a machine for 3D profile bending according to the free-form method
  • FIG. 14 shows schematically a one-stage rolling process with miniature rolling rollers
  • FIG. 15 schematizes a two-stage rolling process
  • FIG. 16 schematically shows a three-stage rolling process
  • FIG. 17 shows schematically a three-stage rolling process which can be used both for free-form bending and for coil bending in the direction of the arrow B-B in FIG. 19
  • FIG. 18 the view in the direction of the arrow A-A in FIG. 18
  • FIG. 19 shows a contour bending machine with the use of the miniaturized roller rolling bodies
  • FIG. 20 top view of a contour bending machine according to FIGS. 18 and 19 with miniaturized roller rolling bodies
  • FIG. 21 shows a schematic view of a section through a linear roller rolling machine showing the continuous rolling of different wall thicknesses on a profile
  • the profile 4 to be bent is held on its rear side with a gripping head, which in turn is fastened to a slide three, to which a drive 6 is assigned.
  • the sled three is slidably mounted on a carriage track 2.
  • a mandrel station 5 which has a mandrel whose mandrel shaft is always held in the region of the forming zone 33.
  • Figure 1 shows only 2D bending and no 3D bending.
  • the tool shank 28 according to the invention which replaces the rolling roller, is arranged only in the Y plane.
  • FIG. 2 schematically shows another bending process, where it can be seen that the profile 4 to be bent is bent over a center roller 13.
  • a middle roll 13 and a bending template 8 can be arranged, wherein the profile to be bent 4 is fixedly mounted on the bending template 8 and is pulled or pushed through the bending zone.
  • the roller rolling 30 are applied as a cylinder rolling body axially outside
  • the roller rolling 31 are applied as the same cylinder rolling body axially upper conical
  • the rolling mill body 32 as achslos guided cylindrical roller are created at the bottom of the profile.
  • the conical installation of the rolling rolling elements 31, 32 takes place in such a way that above a penetration depth 37 takes place with a measure T1, while this penetration depth is returned downwards at position 40 to the dimension TO.
  • the miniaturized bending zone results in the region of the bending axis 20, wherein the center roller 13 or the bending template 8 rotates about the axis of rotation 21.
  • This example is intended to show a roughly schematic representation that a rolling-out action can take place in relation to non-axially guided roll-rolling bodies which are arranged on the inside, namely in the region of a mandrel shaft 12. Consequently, this results in a substantially reduced friction and even an improvement of the Auswalz bines, because even the wall of the mandrel shaft 12 itself is designed as a non-axially guided RolltalzMech 30 in the region of the bending zone.
  • the invention relates not only to external rolling out of the wall of a profile 4, but also to a combined effect in which the wall is rolled both on the outside and on the inside.
  • the roll-rolling body arranged in the region of the mandrel shaft 12 can be set against the inner wall of the profile by means of an adjustment kinematics (not shown in detail) so as to produce the required contact pressure and the penetration depth.
  • the invention therefore also relates to a mandrel shaft 12, which is equipped with axially guided RoüwalzMechn 30, 31, 32, 60, 61, 70, 71, the radially undeliverable toward the direction of movement of the mandrel shaft in the direction of the wall of the profile formed and weg constructive are.
  • the bearing bed 62, 63 is not shown in any more detail for the rolling body 30, 31, 32, 60, 61, 70, 71 arranged in the spindle shaft 12. It goes without saying that this bearing bed 62, 63 formed with the aforementioned adjustment radially against the wall of the profile 4 deliverable and weg nie.
  • Such adjustment means hydraulic type, z. B. be a hydraulic piston cylinder assembly or a mechanical eccentric.
  • the forming zone 33 is not only formed on one side, but it can also be formed on both sides, as shown in Figure 4.
  • the rolling rollers 31 and 32 rotate about the rotation axes 41 while the roller body 30 rotates about the rotation axis 42.
  • the roll-rolling bodies 30 are arranged in a receiving device 43, which consists essentially of a tool shank 46 and an associated guide shank 47.
  • the rolling rollers 31 are arranged in a receiving device 44, which in turn is associated with a tool shank 46 and a guide shaft 47 and the rolling rollers 32 are arranged in a receiving device 45, which in turn consist of a tool shank 46 and a guide shaft 47 mounted displaceably therein ,
  • FIG. 5 shows that the receiving device 43 with the rolling roller bodies 30 is adjustable in the arrow directions 49 by a torsion angle in beta ( ⁇ ).
  • the angle ⁇ refers to the carrier disk, which is designed as a rotatable bearing plate 52, which is designed to be rotatable to a fixed bearing plate 51. In order to set a torsion angle, so the entire arrangement is rotated in the direction of arrow 49.
  • FIG. 6 shows an irregular arrangement of an asymmetrical profile cross-section, wherein the tool shanks 46 are each formed with differently wound roll rolling bodies (30, 31, 32, 60, 61, 70, 71) mounted axially. It is only an example of a cylindrical roller body 30 shown, while the other rolling mill, z. B. as a double cone, are formed and stored in a correspondingly double-conical bearing bed 62. These roll-rolling bodies 71 are arranged several times in differently arranged tool shanks with differently formed feed movements in the directions of the arrows 48.
  • Each individual guide shaft 47 can also be adjusted in the angle ⁇ (cone angle 50), and there is an independent delivery and path position in the direction of arrow 48 given.
  • FIG. 7 shows the replacement of a double-conical roller rolling body by a plurality of barrel-shaped rolling roller bodies 70, which are in turn rotatably supported in a bearing bed and the receiving device in turn consists of a tool shank and a guide shank. Again, a delivery in the directions of arrows 48 is possible again.
  • the other roller rolling bodies (30, 31, 32, 60, 61, 70, 71) are designed as Zynernroüwalz Archives which are freely rotatably arranged in associated receptacles in the tool shafts (28, 46) shown there.
  • the angle ⁇ (cone angle 50) is necessary because it is necessary in this profile training that the top right roller barrel 70 penetrates by a greater penetration depth in the profile, as compared to the bottom right abutting the profile outside barrel roller 70, the only to penetrate the penetration depth 0 into the profile.
  • FIG. 8 shows, in contrast to FIG. 7, spherical roller bodies 61 instead of the formation of barrel roller rolling bodies 70, which in turn are freely rotatably accommodated in a tool shank 46 in a storage bed.
  • FIG. 9 shows a double-contoured bearing bed 62, wherein the roller rolling body is in turn freely rotatably axleless in this bearing bed 62 in the same shape and in this case a contoured roller mill body 60 is described, which applies in the doppelkegligen shape to the outer periphery of the profile 4.
  • the bearing bed 62 thus stops in front of the outer circumference of the profile 4 to be bent.
  • the outer circumference of the contoured rolling mill 60 protrudes beyond this bearing bed and engages directly on the outside of the profile and penetrates into this profile from the outside.
  • axle-guided roller rollers can also be used.
  • the rolling roller body 71 is repeatedly contoured (eg as a double cone), and it is rotatably provided with pins 72 which are rotatably received in correspondingly lubricated bearing receivers in the tool shank 46.
  • FIG. 11 shows that such a multiply contoured rolling roller body 71 can also be contoured asymmetrically and, in turn, is rotatably received in a tool shank 46 with its pin 72 rotatably.
  • FIG. 12 shows how the cone angle ⁇ - 50 - can be set with a corresponding device.
  • a pinion 53 is arranged with an associated drive on an outer fixed bearing plate 51, which pinion 53 meshes with a rack 54 which is connected to the rotatable end shield 52.
  • the cone angle ⁇ is manually adjusted individually for each tool shank 28, 46.
  • support jaws 58 are present, which are brought as close as possible to the bending zone and also have guided without rolling rolling body. Due to the miniaturization of these support jaws 58 results in an excellent support effect, which unfolds their support effect immediately at a small distance to the bending zone 33.
  • a lubrication line 76 lubricant is introduced into the receiving device 43 and introduced there into the bearing bed 62 at the front of the tool shank 46, so as to allow a lubrication of the rolling mill body 30.
  • the tool shank 46 is pressed against an eccentric roller 64 with a permanent pressing force.
  • a support screw 69 which projects into a transverse bore and which supports one end of a spring 68, whose other end is supported on a grub screw 73, which is screwed into the tool shank 46.
  • the grub screw 73 bears against a slider which forms a sliding surface 75 in the direction of an eccentric roller 64.
  • the eccentric roller 64 is in this case eccentrically rotatably mounted in a lever 66, wherein the rotation takes place in the direction of arrow 74.
  • a movement in the direction of the arrow 48 takes place on the profile 4 to be bent and simultaneously also in the vertical direction (X direction).
  • a displacement in the direction of the arrow 67 inevitably occurs, and the main working direction is in the direction Y, namely in the direction of the arrow 48.
  • the corresponding penetration depth of the rolling mill 30 is determined in the profile 4.
  • the eccentric is in this case rotatably mounted in the region of the axis of rotation 65, and instead of such eccentric and a spindle drive can be used.
  • the profile to be bent in the direction of arrow 59 (X direction) is passed through the bending zone.
  • the figure 13 shows that the Roütude 30 not only create the side, but also below and above, as indicated by the rolling body designation 30, 30 '.
  • the bending head is therefore able to allow a bend of 360 ° for the profile 4 to be bent.
  • Such a bending head can, for. B. may be a gimbal-guided bending head, as it belongs to the prior art.
  • Figures 14 to 16 show different stages of successive bending operations with stepwise arranged freely guided roll rolling bodies 30, 30 'in a schematic representation.
  • a three-stage bending process is indicated with reference to FIG. 16, where it can be seen that a total of 3 roll-rolling bodies 30a, 30b, 30c are arranged one behind the other in the bending direction, it is assumed on the whole that each roll-rolling body 30a, 30b, 30c causes a penetration depth of 0.4 mm, which leads to a maximum penetration depth of 1, 2 mm.
  • a profile wall thickness of the profile 4 of 5 mm is specified.
  • each rolling body only has a penetration depth of 0.4 mm (in comparison to the rolling body 30 according to FIG. 14 with 0.8 mm).
  • FIG. 17 shows, as a further embodiment, that the profile 4 to be bent is pushed through the rolling station in the direction of the arrow 79 and in this case guided by means of one or more stationary rolling jaws 77. It is important that on the side facing the profile of the rolling jaw 77 a plurality of rolling support bodies 78 are arranged, which create a force-transmitting on the surface of the profile 4. This in turn has the advantage that the rolling jaw can be made very short and compact because it has small dimensioned axially guided rolling support body and thus engages directly close to the bending zone.
  • a mandrel shaft 12 In the bending zone, a mandrel shaft 12 is carried, and it is important that now on the outer circumference of the profile to be bent several independently driven in the indicated arrow directions ist2020ft 46a, 46b, 46c are present.
  • Each tool shank exerts, for example, a penetration depth of 0.2 mm onto the wall of the profile to be bent, so that these penetration depths finally accumulate on the tool shank 46c.
  • the mandrel shaft in this case has the final contour of the profile, which is finally generated cumulatively by the tool shank 46c.
  • the bending radius R3 is thus the final radius of the curved profile 4, while the other bending radii R1 and R2 are the precursors thereof. So it is a total of a penetration of 3 x 0.2 mm, d. H. total of 0.6 mm.
  • Such a bending and rolling arrangement can be used both for free-form bending and for core bending. It is important that the tool shanks 46a-46c can be used optionally and, for example, only the tool shank 46a alone or the tool shank 46b alone and the tool shank 46c alone.
  • tool shafts in pairs, wherein it is preferred if the tool shank 46a is used first and then following all other, adjoining tool shanks with the respective miniature roller rolling bodies 30 arranged there.
  • FIG. 17 it is shown in FIG. 17 that such a rolling bend can first take place via a rotatable center roller 13.
  • the center roller 13 is then smooth on its outer circumference.
  • Both bending templates 8, 8a can carry support roller bodies 83 on their outer diameter facing the profile, which bear against the outer circumference of the profile 4 in a load-transmitting manner.
  • the bending radius is predetermined by the bending template 8a, and the profile to be bent is pushed in the direction of arrow 79 over the fixed bending template 8a.
  • the three tool shanks 46a-46c illustrated here as an exemplary embodiment each form three different bending axes 84a, 84b, 84c, which are arranged close to each other and have a minimum distance from one another. This is very important for a compressed bend to take place in the area of the very close bending axes 84a-84c.
  • FIGS. 18 and 19 now show a so-called microshape station. Overall, a carrier platform with guide roll jaws is shown, a tool carrier disk and a turntable.
  • a tool carrier disk 85 is fixedly connected to a turntable 52.
  • a turntable 86 which is displaceably guided in the radial direction on the tool carrier disk and can be fixed depending on the adjustable cone angle .alpha..sub.50.
  • the two discs 85, 86 are interchangeable and removable for tool change purposes.
  • the tool shanks 46 with the guides 47 are held firmly in the machine body relative to a bending task.
  • the drives for 87 for the tool shanks 46 are arranged on the rotatable end shield 52.
  • the tool shanks 46 with the roller rolling bodies arranged there are easily replaceable formed with the two discs 85 and 86.
  • the arrangement according to FIGS. 18 and 19 is a machine tool body 1 which is stable in itself and which can also be referred to as a roll bending station.
  • Each roll mill 30-32 is received in an associated proprietary tool shank 46.
  • the mandrel shaft 12 is still visible on the front side.
  • the leadership of the profile is formed by the support roller assembly with the support rollers 29, which are given in the form of fixed support jaws.
  • the support jaws protect the profile introduced into the bending zone from breaking out.
  • FIG. 19 shows that, instead of free-form bending with a revolving center roller 13, a bending template 8 can also be used, which then replaces the function of the rotatably mounted center roller 13.
  • FIG. 18 would be the central roller 13 in the drawing plane behind the profile 4 to be bent, and it is therefore not visible in FIG. The same applies to the template, which is also located in Figure 18 behind the profile to be bent 4 and also not visible.
  • FIG. 18 also shows that the drive 87 consists of a vertically oriented tool spindle and that a motor with an associated gear unit attaches to this spindle.
  • FIG. 20 shows, in principle, the same machine arrangement as shown in FIGS. 18 and 19, except that a bending template 8 is used instead of a central tube 13.
  • the bending template 8 is designed to be rotatable and pivotable, in this case held on a displaceably guided XY coordinate table. It is thus clear that the bending template 8 in FIG. 20 is freely displaceable and rotatable in the XY direction and, moreover, is also adjustable in the Z direction.
  • the entire coordinate table can still be driven inclined in the plane of the figure 20 about the Y-axis.
  • a separate drive 87 is provided on the carriage track 2, which rotatably drives a roller 90 via a belt drive 89, which roller is coupled to the clamping head for the profile, so that over the rotatable clamping head the profile can be twisted in any way about its X-axis.
  • microshape station 91 already described in FIGS. 18 and 19 must also carry this torsional movement about the X-axis.
  • microshape station 91 can be used universally, because it can be used as well in a contour bending machine according to FIG. 20 as in a machine for free-form bending, as was mentioned with reference to FIGS. 18 and 19.
  • the profile to be bent is otherwise clamped on the bending template 8 in the region of a clamping head 92.
  • the Y-axis thus results in the rocking possibility of the bending template, ie it is a transverse Y-machine.
  • the torsion about the X-axis is initiated by the previously named drives, so that it is a longitudinal X-machine.
  • the entire bending task is performed by the previously described microshape station 91, which is bordered only by way of example in Figure 20 with dashed rectangle. With little effort, a universal unit, consisting of the microshape station 91 and the longitudinal X-machine with the drives 88, 89 and 90 can be realized.
  • a transverse Y machine can be realized either by a center roller 13 or by a bending template 8 or 8a. This has already been explained with reference to FIG. 1, where the microshape station for free-form bending with a longitudinal X machine and a transverse Y machine is shown, while in FIG. 20 instead a transverse Y machine for the coil bending is shown.
  • Such a coil bending machine as it is also called a transverse Y machine, and has a standing or non-stationary bending template 8, 8a, replaces the classic stretch bending.
  • classic stretch bending for each bending task for each profile to be bent own machine necessary, which is avoided here.
  • any desired contour and any bending task is bent in accordance with the control settings via the program control of the drive for the bending template 8, without the need for a custom adaptation of the bending template. It therefore no longer requires a separate machine and a separate bending template.
  • only the tools are changed. The machine elements are always the same and only the control program is replaced.
  • FIG. 21 schematically shows a longitudinal section through a machine for linear profiling of a profile 4, wherein it can be seen that the profile 4 to be profiled has different wall thicknesses.
  • the profile is preferably on its front and rear end with associated clamping heads 56, 56 'clamped and guided in the indicated direction of the arrow through the forming zone.
  • the forming zone is formed by the miniature rolling mill 30, 31, 32 according to the invention, wherein the externally arranged miniature rolling mill 30 are shown only schematically, because one part is hidden by the profile itself and the other part is cut away in section.
  • the profile is passed through the forming zone. It can here be used pull and slide slides or other linear actuators, which are able to pass the profile here by the forming zone, formed from the miniature rolling rollers 30-32 pass.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

La présente invention concerne un dispositif pour cintrer des profilés (4) dotés de mini-corps de laminage-roulage sans axe (30, 31, 32, 60, 61, 70, 71), des rouleaux (13, 27, 29) étant présents sur les côtés du profilé à cintrer, lesdits rouleaux formant plusieurs postes de rouleaux (11, 15, 16, 17) dans un poste de cintrage (1), les rouleaux étant conçus au moins partiellement dans le sens longitudinal et perpendiculairement au sens longitudinal du profilé à cintrer, en pouvant être déplacés et bloqués. Au moins un rouleau central (13) est présent sur la périphérie extérieure de l'un des côtés du profilé et au moins un rouleau de laminage d'un diamètre réduit est présent de l'autre côté, ce dernier rouleau laminant le profilé à l'aide d'une tige de mandrin (7) équipée d'un mandrin (14) et située dans l'espace interne du profilé, tandis qu'au moins un rouleau de support (29), installé à l'extérieur de la zone de cintrage, et au moins un autre rouleau (27), installé à la sortie du cintrage, sont destinés à supporter le profilé. Le dispositif de l'invention est caractérisé en ce que des mini-corps de laminage-roulage guidés sans axe sont installés au moins dans la zone de cintrage (33).
PCT/EP2008/007067 2007-09-13 2008-08-29 Procédé et dispositif pour cintrer ou laminer linéairement des profilés dotés de mini-corps de laminage-roulage sans axe Ceased WO2009036871A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710043805 DE102007043805A1 (de) 2007-09-13 2007-09-13 Verfahren und Vorrichtung zum Biegen oder zum linearen Auswalzen von Profilen mit achslosen Minirollwalzkörpern
DE102007043805.4 2007-09-13

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CN117696690A (zh) * 2024-02-04 2024-03-15 长春工业大学 一种薄板辊轧成型设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013143512A1 (fr) * 2012-03-25 2013-10-03 Technische Universität Dortmund Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable

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DE972575C (de) * 1951-10-26 1959-08-13 Sigismond Wilman Vorrichtung zum Kaltbiegen duennwandiger Metallrohre
US3339392A (en) * 1965-04-06 1967-09-05 Pittsburgh Des Moines Steel Bending structural shapes
GB1594625A (en) * 1977-07-27 1981-08-05 Glacier Metal Co Ltd Bearings
DE19733932A1 (de) * 1997-08-06 1999-02-11 Suban Ag Verfahren zur Biegung von geschlossenen Hohlprofilen mit Mediumunterstützung
EP0910486A1 (fr) * 1997-04-25 1999-04-28 Palima W. Ludwig & Co. Procede et dispositif de pliage de profiles a postes modulaires multiples
EP1256394A2 (fr) * 2001-05-12 2002-11-13 Palima W. Ludwig & Co. Machine de pliage de profilées à mandrin
WO2005070581A1 (fr) * 2004-01-24 2005-08-04 Palima W. Ludwig & Co. Procede de formage et de pliage par fluage a chaud et dispositif pour realiser ce procede
EP1862235A1 (fr) * 2006-05-31 2007-12-05 Klingelnberg AG Mandrin pour outil de cintrage à direction de cintrage variable
EP1908536A1 (fr) * 2006-10-06 2008-04-09 Klingelnberg AG Dispositif pour le cintrage par fluoformage mécanisé de profilés

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972575C (de) * 1951-10-26 1959-08-13 Sigismond Wilman Vorrichtung zum Kaltbiegen duennwandiger Metallrohre
US3339392A (en) * 1965-04-06 1967-09-05 Pittsburgh Des Moines Steel Bending structural shapes
GB1594625A (en) * 1977-07-27 1981-08-05 Glacier Metal Co Ltd Bearings
EP0910486A1 (fr) * 1997-04-25 1999-04-28 Palima W. Ludwig & Co. Procede et dispositif de pliage de profiles a postes modulaires multiples
DE19733932A1 (de) * 1997-08-06 1999-02-11 Suban Ag Verfahren zur Biegung von geschlossenen Hohlprofilen mit Mediumunterstützung
EP1256394A2 (fr) * 2001-05-12 2002-11-13 Palima W. Ludwig & Co. Machine de pliage de profilées à mandrin
WO2005070581A1 (fr) * 2004-01-24 2005-08-04 Palima W. Ludwig & Co. Procede de formage et de pliage par fluage a chaud et dispositif pour realiser ce procede
EP1862235A1 (fr) * 2006-05-31 2007-12-05 Klingelnberg AG Mandrin pour outil de cintrage à direction de cintrage variable
EP1908536A1 (fr) * 2006-10-06 2008-04-09 Klingelnberg AG Dispositif pour le cintrage par fluoformage mécanisé de profilés

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117696690A (zh) * 2024-02-04 2024-03-15 长春工业大学 一种薄板辊轧成型设备
CN117696690B (zh) * 2024-02-04 2024-04-05 长春工业大学 一种薄板辊轧成型设备

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