WO2009036871A1 - Method and apparatus for bending or linearly rolling out profiles with axle-free mini-roll rolling bodies - Google Patents

Abstract

The invention relates to an apparatus for bending profiles (4) with axle-free mini-roll rolling bodies (30, 31, 32, 60, 61, 70, 71), wherein rollers (13, 27, 29) which form a plurality of roller stations (11, 15, 16, 17) in a roller bending station (1) bear against the sides of the profile to be bent, wherein the rollers are designed such that they can be moved and fixed at least partially in the longitudinal direction and perpendicularly with respect to the longitudinal direction of the profile to be bent, and on the outer circumference at least one middle roller (13) bears against one side of the profile and at least one rolling roller with a reduced diameter bears against the other side and rolls out the profile with a mandrel bar (7) which is arranged in the interior of the profile and has a mandrel shank (14), whereas at least one supporting roller (29) is arranged outside the bending zone and at least one further roller (27) is arranged at the bending outlet in order to support the profile. The apparatus according to the invention is characterized in that mini-roll rolling bodies guided without the use of axles are arranged at least in the bending zone (33).

Description

 Method and device for bending or linearly rolling profiles with axleless mini roll rollers

The invention relates to a method and a device for bending or for linear rolling of profiles with axleless Minirollwalzkörpern according to the preamble of claim 1.

The invention is based on a prior art, as described in EP 0 910 486 B1. There, 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. It is important that 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.

It is important that a rolling process of the profile takes place in the outer area by the roll of rollers arranged opposite the center roller, whereby the profile is thinned and thereby a certain profile bending (bending contour) is achieved.

Disadvantage of this known bending process, however, is that very high rolling forces must be applied to the rolling roll, because these rolling rolls can not fall below a minimum diameter of 120 mm. This is because the rolling rolls are provided with axes and the axes are elaborate and require high-dimensional bearings, resulting in a relatively large bending tool. Because of the requirement that the axes of the roll must be relatively large, the rolling roll itself must be sized accordingly, resulting in a very large overall bending tool. It is a very high specific pressure in a large-sized rolling roller required to allow a corresponding Auswalzung the profile with the appropriate depth of penetration. Such rolling forces are in the range of 40 to> = 120 t, which makes it understandable that the axes of the rolling roll and the rolling roll itself are highly loaded.

It must therefore be applied to the rolling roller very high rolling pressures to a required depth of penetration of z. B. allow 0.1 to 0.5 mm in a profile to be bent. The rolling forces naturally depend on the type of profile to be bent, on the material and on the wall thickness. As a result, high frictional forces in the interior of the profile arise in the region of the large-sized rolling roller, namely opposite the mandrel shaft entrained in the bending zone, which in turn has the disadvantage that special wear materials must be installed in the mandrel shaft in order to reduce the high frictional forces on the mandrel shaft take. Overall, 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. Incidentally, 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. In this type of bending operation there is also the disadvantage that 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. Thus, there are the same disadvantages as described with reference to the aforementioned free-form bending. This has the disadvantage that a high material usage in the field of bending tools is necessary, because they must be dimensioned correspondingly large. The same applies to the highly dimensioned drive devices, which must have a correspondingly high drive power. These driving forces relate not only to the required high rolling forces, but also still on the shear forces that are necessary to overcome the frictional resistance of the mandrel shaft in the interior of the profile. In contour bending, moreover, very high torques are necessary in order to turn the said frictional resistance past the curved profile in the region of the mandrel shaft. In addition, high amounts of lubricant are necessary to lubricate the interior of the profile, the mandrel shaft. This results in a total unwanted noise development with high wear in the field of bending tools and a high load, which leads to a reduction in the life of the drive unit. Finally, the energy consumption is disproportionately high.

In the large-scale Auswalzung according to the prior art materials are already excited outside the actual core zone to flow in the field of Fließwalzzone, which is already associated with the disadvantage of an undesirable microstructure displacement in this area. Until the outside of the bending zone already flowed material in the actual bending zone is formed, it is difficult to maintain this flow of material outside the bending zone upright. Namely, this causes corresponding hardening, which leads to increased Gefügereibung in the actual Biegeumformzone. As a result, the bending quality is deteriorated in the case of large-scale rolling rolls used in the prior art.

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. To achieve the object, the invention is characterized in that at least in the bending zone axially guided mini roll rollers are arranged.

With the given technical teaching, there is now the significant advantage that at least the rolling roller consists of axially guided mini roller rolling bodies. This results in the advantage that now no longer guided on an axis rolling roller is present, but this is inventively replaced by axially guided mini roll rollers, which represents a significant advance over the prior art.

The 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.

It is thus brought to flow on a very small forming area, the structure, which was previously not the case in the prior art. The term "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.

It is important that the 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. Under a mini rolling mill body are understood in particular spherical body, barrel body or cylinder body. In addition, there are non-profiled contour rolling rollers, the z. B. are designed as a cylindrical roller, which are also housed axially in associated storage beds.

In addition, there are also 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.

In these profiled miniature Konturrollwalzkörpem it is also provided in a development of the present invention that they are rotatably supported in axes.

In addition, it is provided in another embodiment, that in the area of the storage bed and that in the inner periphery of the storage bed more axially guided mini-guided rolling bodies are supported, which support the non-axially guided in the storage bed miniroll rolling on the outer periphery and contribute. In this way, the carrying capacity of the mini roller rolling body is accommodated not only via the arranged in the region of the bearing bed sliding bearing surfaces, but also from the arranged in the region of these slide bearing surfaces miniature rolling body.

Such axle bearings are required when complicated contours of Konturrollwalzkörpers are required, which can no longer be modeled in a storage bed for itself there freely rotating roller body.

It is important that 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. With 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.

If, for example, a rolling force of 80 t would have to be applied according to the prior art with a rolling roller of 200 mm diameter, it suffices according to the invention for a diameter-5 mm, miniature, rollerless rolling mill body to apply a rolling force of 2 t.

As a result, when the diameter differs from 200 mm to 5 mm by a factor of 40, the rolling force is reduced from 80 tons to two tons. This results in the significant advantage of the invention, because it can be seen that now very low driving forces are necessary to achieve better Biegeumformergebnisse with miniaturized tools and correspondingly smaller drives.

Overall, the drive is greatly reduced, the machine dimensions are smaller and the lubricant consumption - due to the lower wear - is greatly reduced.

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. This means that not only a bending itself is carried out with a corresponding dilution of material in the wall of a profile to be bent, but also a linear profiling of a straight profile, with the aim to achieve different wall thicknesses in certain profile sections. Important here is that z. B. Depending on the static requirement of the profile to be rolled out in the areas where only small static loads act on the profile, 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.

Therefore, an optimized lightweight construction is possible because in the prior art was only known, such profiles with different wall thicknesses by connection techniques such. As welding or joining, to add together, so as to connect different profile sections together in the manner of a kit. Here, the invention goes a substantial step further, because now it is possible for the first time to design the profile steadily and linearly and continuously in arbitrary areas with thinner wall thicknesses than comparatively in other places of this profile. It is therefore a continuous flow process, with which such a profile can be formed with distributed over the length of different wall thicknesses. Such a method of linear profiling with rolling certain sections over the length of the profile seen, can take place both in the continuous process continuously as well as in the piece process, when it comes only to design certain rods and the like profiles of limited length.

More importantly, the aforementioned bending process and the linear profiling method now described above can also be combined. Thus, it is possible, for example, to produce such a linear profiling with thinned wall thickness also in the area of an arc of a profile bent according to the present method. Likewise, such thinned wall portions can also be applied in the region of straight profile pieces, if such a profile has previously been bent by the method according to the invention.

Overall, it is now possible for the first time to produce continuous wall thickness transitions on a profile with straight and curved sections. The following description therefore relates both to the method for linear profiling of profiles and to the method for bending profiles with said miniature rolling rollers.

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.

Likewise, this means that in such a plane, 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. In a first embodiment, 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.

This is therefore a step formation, wherein 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.

In a second embodiment, however, it is also envisaged that 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. Thus, in a plane, 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. This results in a planing of possibly resulting tread grooves, so that in the Auswalzrichtung behind the actual miniature roll rolling bodies lying further miniature roller rolling body perform a leveling effect and a leveling effect of possibly resulting in the longitudinal direction tread grooves.

It is of course within the scope of the present invention that further miniature rolling rollers are arranged to provide the profile intentionally and intentionally with longitudinal grooves or longitudinal contours, for example.

These 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.

Such arranged on several levels Miniaturrollwalzkörperanordnungen 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.

In a normally provided according to the prior art, 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.

In particular, when it comes to differently shaped cross-section shaped non-round profiles to be bent, such a fine-tuning to different profile sections of an irregularly curved profile is no longer possible. This is where the invention comes in, optimally adjusting the α-angle for each tool shank to an optimal penetration depth per profile segment adjustable designed. Thus, the bending line is aligned exactly on the profile inside, and thus asymmetric profiles can be bent. It becomes clear from this case example that the mathematically calculated volume displacement on an irregular profile can actually be set in practice, because the angle α can be set separately for each individual profile cross section or section of the profile to be bent.

The invention is not limited thereto. In a second embodiment, 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.

Overall, the advantage of the invention is that tool shanks are provided 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.

The formation of a bearing bed at the front end of a tool shank for receiving rolling rolling bodies offers the possibility of freely rolling the rolling mill bodies in a miniaturized form. The diameter of such rolling mill can therefore be reduced to 2 mm. The rolling forces that are necessary to induce a structure flow in the material to be bent profile, in normal rolling roll dimensions with axis-guided rolling rolls of an order of 20 1 to> = 100 t. It is also additionally provided in the scope of the present invention that in

Bearing itself even more supports, which there recorded in the axle

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

Create miniature roller mill body and so the load on the support roll body on the

Recording is transmitted in the tool shank. 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.

In the following description, embodiments are explained, which relate both to rolling mill body in shots of the tool shank with support rollers and also without support rollers.

The rolling rollers therefore normally have a journal bearing diameter of between 40 and 200 mm in the prior art axle diameter.

If, according to the invention, miniature rolling rollers are used which are received in a bearing bed at the front end of a tool shank, 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 consequences of the miniaturization of rolling mill bodies according to the invention are considerable. It can realize much smaller tools, smaller tool holders, smaller drives and a smaller footprint become. This results in material savings and energy savings, apart from lower noise emissions and lower lubricant consumption.

It is important that because of the small 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.

Furthermore, 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. In addition to the profile roll bending and the core bending described above, 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. In addition, 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. Thus, 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. This now for the first time makes it possible to bend smallest profile cross-sections with walls of <= 0.4 mm, because according to the invention, the rolling tools and beyond the bending and supporting tools are miniaturized so small that they can move together in a confined space and through Lagerverhältnisse a much finer dosed delivery is given to the profile to be bent for the first time.

This allows even high-strength materials that were previously not bendable, can be bent. Even the smallest radii can be bent, and exact profile cross-sections can be obtained, which leads to a hitherto unknown dimensional and surface quality.

For the type of training of rolling elements new materials are used, as 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.

Due to the novel miniaturization of the tool designs, it is possible to realize relatively large penetration depths with corresponding profile wall thickness even with small rolling body dimensions.

Special lubrication under pressure ensures a reduced friction process. Squeegees provide for clean rolling surfaces.

This prevents foreign particles from being introduced from the surface of the profile to be bent into the one-sided open storage bed. This can be realized with the tool shafts according to the invention devices that are used for all common bending methods. The inventive method is very compact and therefore interesting for a variety of bending machines. It is only crucial that the tool shank according to the invention or the several tool shanks, which all together form the bending zone in one plane, be placed in the bending axis. In this now miniaturized bending zone by the Auswalzprozess the structure for a Brief moment brought into a so-called flow phase, taking place at the same moment on the control measuring roll of the bending process. This refers to a 3D process. Due to the flow process, the moment of resistance is broken, and there is a kneaded structure state. This fact enables reduced material usage in all areas of the bending machine, and this means a decisive weight optimization. The complete kinematics is thus miniaturized. This also reduces the drive effort.

What has hitherto been recorded in the profile bending technique with a single roller can now be solved considerably better according to the invention with the mentioned miniature roller rolling bodies. At the periphery of a profile to be bent is therefore not only a single - as existing in the prior art - achsgeführten rolling roll present in the bending zone, but there are according to the invention 4 to 5 individual stations with rolling rollers available, which vary according to the nature of the cross-sectional education of straighten the bending profile. This results in a rolling effect and a structure flow in the bending zone, which can be made much more precise.

7 features characterize the Microshape technology:

- high efficiency of the bending process

- good structure design

- high dimensional accuracy in profile cross section + bending contour - extension of the field of application to high-strength materials

- Bending of thinnest-walled profiles approx. 0.4 - 4.0 mm steel / 0.8 to> 6.0 mm AIu

- New machine design for microshape machines

- New tool design with shaftless rolling rollers, which means:

- new bending process - new machine design

- Process characteristics: 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.

Three machine concepts realize microshape technology - MiTe -:

- 1. MiC contour bending machines (2d + 4d)

- 2. MiC free-form benders (2d + 3d) 3. MiC linear roller burnishing machines

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following, the invention will be explained in more detail with reference to drawings illustrating several execution paths. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

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

Area of a spike shaft

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

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 basic structure of a profile bending machine for free-form bending will first be explained with reference to FIG.

This is a device for bending profiles with axleless mini roll rollers, wherein on the sides of the profile to be bent (4) rollers (13, 27 and 29) bear, which a plurality of roller stations (11, 15, 16, 17) in one Forming the reel bending station (1); wherein on the outer circumference on one side of the profile (4) at least one center roller (13) and on the other side at least one tool shank 28 is applied with rolling rollers 30 of reduced diameter, which Rollwalzkörper 30 the profile (4) with a in the interior of the profile ( 4) arranged mandrel shaft (7) with mandrel shank (12) ausalzt, while outside the bending zone a plurality of support rollers 29 and the bending spout at least one correction / measuring roller 27 for guiding the profile (4) is arranged, characterized in that at least in the bending zone ( 33) axially guided mini roll rollers (30, 31, 32, 60, 61, 70, 71) are arranged. From Figure 1, further details of a free-form bending machine can be seen.

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.

Furthermore, in the right part of Figure 1, a mandrel station 5 is still shown, which has a mandrel whose mandrel shaft is always held in the region of the forming zone 33.

In the direction of arrow 48 in this case the drive for the tool shank 28, in which the roller rolling elements 30 are arranged.

It is not shown in detail that even upper roll rolling elements 31 are also arranged in associated tool shanks and lower roll rolling elements 32 in associated tool shanks and in each case act in the forming zone 33 on the profile 4 to be bent. At 52, a rotatably driven bearing plate 52 is shown, on which the different tool shanks are attached to support the aforementioned rolling mill body. The drive takes place via a pinion 53 and a rack 54th

Figure 1 shows only 2D bending and no 3D bending. In 2D bending, the tool shank 28 according to the invention, which replaces the rolling roller, is arranged only in the Y plane.

It can additionally be provided that even in the Z-plane, ie directly vertically from above and from below onto the profile 4 to be bent, similar tool shanks 28 with miniature rolling roller bodies 30, 31, 32, 60, 61, 70, 71 freely rotatable there and directly imply the bending process. This will be explained later with reference to FIGS. 18 and 19. These tool shanks would then be delivered conically to the profile 4, to allow uneven Auswalzung the profile wall thickness in this area.

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.

Instead of 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.

Here again, it can be seen that on the outside of the profile 4 rolling roll body 30, 31, 32 are present, 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 and 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.

These volume shifts to the penetration depth 37 and the O-penetration depth 40 now cause the conical bending of the profile. When stencil bending the profile on the front with the bending template 8 is firmly connected.

It is then generated a bending radius 9 along the bending line 10.

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.

An example is explained in Figure 2, that now the outer roller rolling body 30 undergoes a penetration depth 37 in the profile cross section of the profile 4 and this takes place an increase in length by the length 35 relative to the lower length 34. Due to the difference between the two lengths 34, 35 creates a slope 36, which corresponds to the bending radius 9. The prerequisite here is that a conical rolling out of the upper and lower walls of the profile takes place, which is given by the rolling rolling elements 31, 32 (see FIG. 3).

In the same way, there is also an increase in length of the length 38, which undergoes a length increase 39 after the rolling.

4 shows a modified embodiment, where a single wall of the profile 4 is shown and it is assumed that the free rolling roller body 30 is part of the mandrel shaft 12 and thus performs a Auswalzaktion on the inside of the profile, while the outside also a similar rolling mill body 30 is present who also performs a rolling action.

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 Auswalzeffektes, because even the wall of the mandrel shaft 12 itself is designed as a non-axially guided Rolltalzkörper 30 in the region of the bending zone.

The upper part of Figure 4, however, shows the non-rolled state of the profile. 4

Accordingly, 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.

In this case, it is assumed that 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 Roüwalzkörpern 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 wegstellbar are.

For the sake of a simpler drawing, 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 wegstellbar. Such adjustment means hydraulic type, z. B. be a hydraulic piston cylinder assembly or a mechanical eccentric.

It is important that according to Figure 2, 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.

With reference to FIG 5 further details of the bending tools are shown. It can be seen that 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.

In an analogous manner, 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 ,

The respective guide shaft 47 is slidably mounted in the arrow directions 48 in the respective tool shank 46 and provided correspondingly with a not shown feed drive. In addition, 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 (β). The angle β 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.

In addition, there is an angle α (50), which determines the conicity for the respective penetration depth 37 (see FIG. 3) of the conically set roll rolling bodies 30, 31, 32.

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 α (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 Zynernroüwalzkörper which are freely rotatably arranged in associated receptacles in the tool shafts (28, 46) shown there.

The angle α (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.

Otherwise, the same explanations apply to the same parts.

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.

Otherwise, the same terms apply to the same parts.

In all the drawings of FIGS. 6 to 9, moreover, the mandrel bar 7 with the mandrel shaft 12 can still be seen, and it can be seen that a corresponding lubrication can be introduced into the mandrel shaft 12 through a central bore. Here, only schematically the center roller 13 is shown, which - according to the above description - by a Biegeschione 8 - may be replaced.

Instead of the axially guided contoured roller rolling elements 60, according to FIGS. 10 and 11, 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.

Otherwise, the same reference numerals apply to the same parts.

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 α - 50 - can be set with a corresponding device. For this purpose, it can be seen that 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.

With rotary drive of the pinion 53 thus the entire bearing plate 52 is rotated in the direction of arrow 49 by the torsion angle ß.

The cone angle α is manually adjusted individually for each tool shank 28, 46.

This depends on the contour design of the profile to be bent.

In Figure 13, a device execution of a bending tool is shown, where it can be seen that in the opposite receiving devices 43, the shaftless guided roll-rolling body 30 with a are arranged at any diameter. The dashed lines show that the roll rolling bodies can assume such a diameter.

It is a 3D bending machine for free-form bending, wherein the profile to be bent 4 is supplied in the left direction and in this case passes laterally to support stations 16.

It is shown as a novel feature that 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.

Through 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. For this purpose, 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. As a result, 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). Thus, 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.

Thus, 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. Overall, 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 Roükörper 30 not only create the side, but also below and above, as indicated by the rolling body designation 30, 30 '. Thus, there is a full enclosure of the profile to be bent on all sides by the roller bearing rollerless mounted, and consequently there is a three-dimensional bending of this profile. The bending head is therefore able to allow a bend of 360 ° for the profile 4 to be bent.

Contrary to the mode of operation of the Auswalzvorganges 2D bending the rolling rollers 30, 30 'in a complete circumference the same size, so that the penetration depths are of equal size (plane-parallel to the profile), so that the actual bending process takes place by a so-called bending head. 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.

In these illustrations, units of measurement are in millimeters, and these are illustrative only. These are typical penetration depths and typical dimensions of a profile to be bent, wherein it can be seen in FIG. 14 that a single-stage bending operation takes place by means of any roll rolling body 30 opposite to the previously described mandrel shaft 12. This technique corresponds to all of the previously mentioned examples according to FIGS. 1 to 13, where only single-stage bending operations have been illustrated.

In contrast, a two-stage bending process is shown in Figure 15, where it can be seen that in addition to the previously mentioned Rollwalzkörpern 30 now two in the bending direction rolling rolling bodies 30a, 30b are present, wherein the bending direction in the rear Rollrollkörper 30a a first penetration depth of z. B. 0.4 mm in the profile to be bent 4 performs and in Bending direction underlying rolling mill body 30b by an equal penetration depth of 0.4 mm, the previous penetration depth increased to a total of 0.8 mm.

Thus it can be seen that 30-32 very large penetration depths can be generated with gradual arranged axially guided roll rolling bodies.

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.

It also becomes clear from these drawings that, due to the miniaturization of the bending zone, there is only a bending zone width of 1.5 mm when a diameter of a rolling mill body 30 is about 5.0 mm.

Here, a profile wall thickness of the profile 4 of 5 mm is specified.

The wetted area, d. H. Thus, the contact surface, which is achieved in the figure 14 of the rolling mill body 30 on the surface, in this case is only 1, 5 mm. In the two-stage bending according to FIG. 15, 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).

In the three-step process, as shown in FIG. 16, only one penetration depth of 0.266 is used for each rolling element, so that a total penetration depth of 0.8 mm is achieved in the three-step process.

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.

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 Werkzeugschäft 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.

This means at the same time that the tool shaft 46a is associated with a first bending radius R1, which is relatively large and therefore in this case starts from a very far center 80.

Because of the cumulative effect of the serially successively arranged roll rolling bodies 30 in the tool shanks 46a-46c, a different bending radius is assigned to the tool shank 46b (bending radius R2), which is consequently shorter and starts from the shortened center 81.

In an analogous manner, because of the increasing bending of the profile, the tool shank 46c with the roll rolling body 30 arranged there is therefore assigned only one bending radius R3 starting from a center 82.

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.

Likewise, in another embodiment, it is possible to use the 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.

Having previously stated that this method can be used for different rolling processes, 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.

Furthermore, it is shown that when the center roller is omitted, it is also possible to bend over a stationary or a movable bending core. In this case, two bending templates 8, 8a are shown and which is driven movably into the bending template 8 in the direction of the arrow 79 and the bending template 8a is designed to be stationary.

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.

As a result of the movement drive of the bending template 8, it becomes clear that the profile 4 to be bent is clamped to the bending template 8 with a clamping head (not shown in more detail) and this now rotates under the stationary tool shanks 46a-46c.

In the case of the application of a fixed bending template 8a, 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. It is further added that 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.

In detail, it can be seen from Figures 18 and 19.

A tool carrier disk 85 is fixedly connected to a turntable 52. On the tool carrier disk 85 there is 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. Thus, 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.

On the fixed bearing plate 51 is located above an outer bearing ring 55 and an inner bearing ring a rotatable bearing plate 52. The drive is made via the pinion 53 with a corresponding rotary drive. The entire arrangement is attached to the carriage track 2 and, with reference to FIG. 1, forms a self-contained machine body.

The entire arrangement is used for free-form bending and contouring. It can be seen that a number of rolling rollers 30, 31, 32 are arranged on the tool shanks, each of which abuts against the outer circumference of the profile 4 to be bent.

Each roll mill 30-32 is received in an associated proprietary tool shank 46.

According to FIG. 19, 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.

Figures 18 and 19 include two different bending methods. Namely, 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.

This is shown in Figure 20 in more detail. This results in the universal scope of the present invention, because just with a rotatable center roller 13 a free-form bending can be made as well as a fixed bending template a Wickelwalzbiegen can be made.

This makes it clear that one can easily exchange the individual tool units, consisting of the drives 87 and the associated tool shanks 46, and consequently can also use any roller rolling elements 30-32. 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.

The adjustment of a twist for the profile to be bent by rotation of the pinion 53 and its corresponding drive. In this case, the bearing plate 52 is then turned adjustable. On the bearing plate (52) are the manually adjustable tool shanks with the cone adjustment. These are located on a replaceable double disc = fast conversion.

Directly on the rotatable end shield 52 are the feed drives for the penetration depths of the axleless rolling rolling elements.

When a tool shank change the double discs with tool shanks and other rolling rolling elements are taken out via quick release and new, already equipped double discs used. The feed drives are readjusted via a quick coupling and connected to the new tool shanks.

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.

Instead of such a motor drive 87 and hydraulic drives can be used. Likewise, hollow spindle motors can be used. So important is the high precision with which the drives 87 with the associated tool shanks 46 and the associated rolling rollers against the profile in a minimum range in the region of the bending axis 84 can be delivered to each other, so as an exact bend with well-defined penetration depth of the rolling mill body in to allow the profile to be bent. In the tool area, the cone angle α (50) is fixed, depending on the outer contour of the profile, as has been explained with reference to FIG. 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.

Likewise, the entire coordinate table can still be driven inclined in the plane of the figure 20 about the Y-axis.

It is also shown that to produce a torsion of the profile to be bent, 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.

At this moment, the microshape station 91 already described in FIGS. 18 and 19 must also carry this torsional movement about the X-axis.

It follows that the 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. Further, the torsion about the X-axis is initiated by the previously named drives, so that it is a longitudinal X-machine. And finally, 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. Further, 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. In classic stretch bending for each bending task for each profile to be bent own machine necessary, which is avoided here. In the invention, 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. In the machine according to the invention, only the tools are changed. The machine elements are always the same and only the control program is replaced.

This results in the advantage that roll-rolling bodies 30-32 are arranged in any tool shanks 46 and can be adapted to any desired bending task. Furthermore, there is the further advantage that now can be delivered interchangeably any transverse-Y machine in an always present longitudinal X-machine. This is shown by the illustrated examples in FIGS. 1 and

20. Thus, according to FIG. 1, a free-form bending and according to FIG. 20 a contour bending is possible.

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.

Here it can be seen that in the forming zone, a dilution of the material cross-section of the profile 4 takes place, which is therefore formed with a thinned material cross-section 4 '. At the same time, it can be seen that the transition from the thinned strip cross section to the thickened strip cross section of the profile 4 can take place continuously and without step, which for the first time gives rise to the possibility that such a lightweight profile can be produced continuously with different wall thicknesses.

In known manner, in front of the forming zone, which is formed by the miniature roll rolling bodies 30-32, nor support rollers 29 are arranged to prevent breakage of the profile.

It is not shown how 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.

It is important that for the purposes of the present description it is now possible for the first time to simultaneously produce a bend by appropriate delivery of one or more of the mentioned miniature roller rolling bodies 30-32. The bending is only ever achieved in that only a certain part of the wall of the profile is formed with a thinned cross-section, while the other parts of the profile, which lie on the same plane, receive a different rolling action. With a uniform all-round Auswalztiefe the miniature roller mill 30-32, these are also the same size. An adjoining bend is performed, for example, by an adjoining cardan head. This will perform 3D bending.

In the case of 2D bending, a bending in the 2D plane would take place solely due to the different diameters of the miniature roller rolling bodies 30-32 shown here.

Zeichnunqsleqende

1 roll bending station

2 sledge track

3 sleds

4 profile

5 thorn station

6 Drive for slide 3

7 mandrel

8 bending template

9 bending radius

10 bend line

11 center roller station

12 spike shaft a, b

13 central role

14 disc

15 guiding and rolling station

16 support station

17 bending station

18 machine bodies

19 spindle a, b, c

20 bending axis

21 rotation axis (middle roll 13)

22 drive

23 drive

24 sleds

25 sleds

26 sleds

27 Correction measuring roller

28 Tool shank with rolling mill body

29 support roller

30 roller rolling bodies (outside)

31 Roller Rolling Body (top)

32 Rolling Rollers (bottom) 33 forming zone (bending zone)

34 length

35 length

36 slope

37 penetration depth (T1)

38 length

39 length increase

40 penetration depth (TO)

41 axis of rotation

42 axis of rotation

43 recording device

44 recording device

45 recording device

46 Tool shank

47 Leadership

48 arrow direction

49 arrow direction (torsion angle)

50 cone angle α

51 end shield (fix)

52 end shield (rotatable)

53 pinions

54 rack

55 bearing cross outside

56 clamping head

57 arrow direction

58 support jaw

59 arrow direction

60 roll rolling bodies (contour)

61 roll rolling body (ball)

62 storage bed

63 storage bed

64 eccentric roller

65 axis of rotation

66 levers 67 arrow direction

68 spring

69 Support screw

70 rolling mill body (ton)

71 Roller Rolling Body (Multiple)

72 cones

73 grub screw

74 arrow direction

75 sliding surface

76 lubrication line

77 Rolling jaw

78 rolling support body

79 thrust direction

80 midpoint (R1)

81 midpoint (R2)

82 center point (R3)

83 Support Rolling Body (from 8, 8a)

84 bending axis a, b, c

85 tool carrier disk

86 turntable

87 drive (tool shank 48)

88 drive

89 belt drive

90 roll

91 Microshape Station

92 clamping head

Claims

claims

1. Apparatus for 2D or 3D free-form bending or linear profiling of profiles, wherein on the sides of the profile to be bent or linearly to be thinned rollers (13, 27, 29) abut, and the inner circumference on one side of the Profile (4) at least one center roller (13) is present, while outside the bending zone at least one support roller (29) and at least one further roller (27) for guiding the profile (4) are arranged on the bending spout, characterized in that at least in the bending zone (33) axially guided mini roll rollers (30, 31, 32, 60, 61, 70, 71) are arranged.

2. A device for asymmetrical 2D or 3D Rollierwalz bending or linear profiling of profiles with a tool core, which specifies the contour of the profile to be bent or linearly thinned, wherein the profile to be bent is clamped on the inlet side of the tool core and on the profile - Another side chuck is arranged, which bends the profile along the bending contour under a stretching force in the predetermined bending contour, characterized in that in the bending axis (20) of the profile to be bent (4) one or more Minirollwalzkörper (30, 31, 32nd , 60, 61, 70, 71) are arranged.

3. A device for asymmetric 2D or 3D Rollier- or Profilierwalz- bending or linear profiling of profiles with a tool core, which specifies the contour of the profile to be bent or linearly thinned, wherein the profile to be bent is held on both sides in clamping heads , and linearly of the bending axis can be fed under the action of a biasing force and the tool core rotatably driven winding the profile to be bent with simultaneous deformation in the final contour, characterized in that in the bending axis (20) of the profile to be bent (4) one or more mini roll rollers ( 30, 31, 32, 60, 61, 70, 71) are arranged.

4. Device for symmetrical 2D or 3D roller burnishing bending or linear profiling of profiles with a tool core, which specifies the contour of the profile to be bent or linearly thinned, wherein the bending Profile is held on both sides in Einspannköpfen that bend in its flow movement to be bent profile to the tool core by applying a biasing force, characterized in that in the bending axis (20) of the profile to be bent (4) one or more mini roller mills (30, 31, 32, 60, 61, 70, 71) are arranged.

5. Apparatus for 2D or 3D die bending or for linear profiling, in which the profile to be bent or linearly thinned is pushed or pulled through at least one die corresponding to the profile cross section, characterized in that in the region of the bending axis (2 ) arranged matrices one or more mini roll rollers (30, 31, 32, 60, 61, 70, 71) are arranged.

6. Apparatus for bending or linear profiling of profiles, wherein on the sides of the profile to be bent or linearly thinned (4) rollers (13, 27, 29) rest, which a plurality of roller stations (11, 15, 16, 17) in a Rollenbiegestation (1) forming and on the outer circumference on one side of the profile (4) at least one center roller (13) and on the other side at least one rolling roller with reduced diameter, which rolling roll the profile (4) rolls, while outside the bending zone at least one Support roller (29) and at least one further roller (27) for guiding the profile (4) are arranged on the bending spout, characterized in that at least in the bending zone (33) at least one or more rolling rolls as achslos guided mini roll rollers (30, 31, 32, 60, 61, 70, 71) are formed.

7. The device according to claim 6, characterized in that the Rollenbiegestation (1) at the end of the profile to be bent (4) a correction / measuring station (17) with an adjoining, approximately centrally arranged rolling station (15) and a downstream support station ( 16), which is arranged on one side of the profile to be bent (4), which has a single, rotationally driven or non-driven and a further center roller (13).

8. Device according to one of the preceding claims 1 to 7, characterized in that the device comprises a carriage track (2), to which the profile to be bent (4) on a in the X direction by means of a drive (6) slidably formed carriage ( 3) is arranged in parallel, wherein in the inner profile of the profile (4) with a mandrel shaft (12a, 12b) connected

Mandrel is arranged, which mandrel shaft (12a, 12b) via a mandrel rod by means of a coupling with an associated gear of a mandrel station (5) is connected.

9. Device according to one of the preceding claims 1 to 8, characterized in that the bending station (17) has a correction measuring roller (27) and the guide and rolling station (15) a tool shank (28) with freely rotatably mounted roller rolling bodies (30 , 31, 32, 60, 61, 70, 71), support rollers (29) being associated with the support stations (16).

10. Device according to one of the preceding claims 1 to 9, characterized in that the stations (15 to 17) are adjustable by means of arranged spindles and lockable, wherein an adjustment of the correction measuring roller and roller (27, 30) of the stations (15 to 17) and the tool shank (28) in the Y direction by means of, for example spindle drives or hydraulic cylinders (not shown in detail) is formed.

11. Device according to one of the preceding claims 1 to 10, characterized in that the correction measuring roller (27), the center roller (13) and the support rollers (29) by a tool shank (28) is replaceable, wherein the tool shank (28 ) has a front open receptacle for receiving freely rotatably mounted roller rolling bodies (30, 31, 32, 60, 61, 70, 71).

12. Device according to one of the preceding claims 1 to 11, characterized in that the tool shank (28) replaces the rolling roller when the

Bending process is designed as a 2D bending and the use of tool shanks (28) in the Y and Z plane forms a 3D bending, the tool shafts (28) are parallel to the profile (4) are delivered to a uniform Auswalzung the profile wall thickness in this area form.

13. Device according to one of the preceding claims 1 to 12, characterized in that instead of the center roller (13) a bending template (8) is arranged, wherein the profile to be bent (4) on the bending template (8) is fixedly secured and by the Pulled bending zone (33) and pushed.

14. Device according to one of the preceding claims 1 to 13, characterized in that on the outer side of the profile (4) adjacent roll rolling bodies (30, 31, 32) are formed as a cylindrical rolling body, wherein the roll rolling body (30) axially outside, the roll rolling body (31) conical upwards conically and the roll-rolling body (32) is conically attached to the profile (4), the conical contact of the roll-rolling bodies (31, 32) forming a penetration depth (37) with a dimension T1 at the top, while this penetration depth down to the dimension TO at position (40), whereby a conical rolling of the profile (4) is formed with a length increase (39) of a length (35) with respect to a length (34), whereby a bevel (36) forms, which is formed equal to a bending radius (9).

15. Device according to one of the preceding claims 1 to 14, characterized in that the free rolling roller body (30) as part of the

Dornschaftes (12a, 12b) is formed and on the inside of the profile (4) forms a Auswalzfunktion, while a similar rolling mill body (30) is arranged on the outside of the profile (4) which externally on the profile (4) forms a Auswalzaktion, said arrangement of the Rolling body (30) has a reduced friction and the Auswalzeffekt due to the leadership of the guided without rolling roller body (30) in the region of the bending zone (33) formed improved.

16. Device according to one of the preceding claims 1 to 15, characterized in that the bending is formed as a combined bending with roller rolling body (30, 31, 32, 60, 61, 70, 71), wherein the wall of the profile (4) on the outside and on the inside by means of rolled roller bodies (30, 31, 32, 60, 61, 70, 71) arranged in the area of the mandrel shank (12) and the required contact pressure and penetration depth are produced by means of kinematics (not shown) is formed adjustable, which the rolling rolling elements (30, 31, 32, 60, 61, 70, 71) radially to the direction of movement of the mandrel shaft (12) or points away.

17. Device according to one of the preceding claims 1 to 16, characterized in that the bending zone (33) on the outside and laterally conical =. 3

Pages or the other side = 4 sides on the profile (4) is formed.

18. Device according to one of the preceding claims 1 to 17, characterized in that the device comprises a receiving device (43, 44, 45) for the arrangement of the rolling roller body (30, 31, 32), which consists essentially of a tool shank (46) and a guide shaft (47) displaceably mounted therein in the direction of the arrow (48) by means of a feed drive, wherein additionally the rolling roller body (30) is rotated by a torsion angle Beta (β) in the direction of arrows (49) with respect to a rotatable end shield (Fig. 52) is adjustable and an angle α (50) forms the conicity of the respective penetration depth (37) of the conically set roll rolling body (31, 32).

19. Device according to one of the preceding claims 1 to 18, characterized in that the bending of a profile (4) is formed with an asymmetrical profile cross-section with different rolling roller body (30, 31, 32, 60, 61, 70, 71), wherein the For example, a rolling mill body (30) is cylindrical and the other rolling rolling bodies (31, 32, 60, 61, 70, 71) are, for example, biconical, spherical, barrel-shaped or similar and are stored in a bearing bed (62, 63) in the tool shank (46) is and one of additionally arranged tool shanks (46) independent feed movement in the direction of arrow (48).

20. Device according to one of the preceding claims 1 to 19, characterized in that the angle α (50) forms a different penetration depth on the profile outside in the arrangement of barrel roller rolling body (70).

21. Device according to one of the preceding claims 1 to 20, characterized in that in the mandrel shaft (12) arranged mandrel rod (7) has a central bore which is formed for introducing a corresponding lubricant in the mandrel shaft (12), wherein the arranged center roller (13) is formed replaceable by a bending template (8).

22. Device according to one of the preceding claims 1 to 21, characterized in that the bending of the profile by means of guided roll roller body (30, 31, 32, 60, 61, 70, 71) is formed, wherein the roller rolling body (30, 31, 32nd , 60, 61, 70, 71) rotatably connected to a pin (72) which is rotatably received in a correspondingly lubricated bearing receptacle in the tool shank (46).

23. Device according to one of the preceding claims 1 to 22, characterized in that the roller rolling body (71) has an asymmetrical contour and is rotatably received with its pin rotatably in the tool shank (46).

24. Device according to one of the preceding claims 1 to 23, characterized in that the cone angle α by means of a fixed

Shield (51) arranged pinion (53) is set, wherein the pinion (53) meshes with a rack, which is connected to a rotatable bearing plate (52), which bearing plate (52) upon rotary drive of the pinion (53) in the arrow direction (49 ) is twisted by the torsion angle ß, wherein the cone angle α manually adjustable for each individual tool shank (28, 46) is formed.

25. Device according to one of the preceding claims 1 to 24, characterized in that when 3D free-form bending with a cylindrical roller rolling body (30) to be bent profile (4) arranged on the side

Support stations (16) passes by, near the bending zone support jaws (58) are arranged from axially guided roll-rolling body (30), which form an improved support of the profile (4) in the region of the bending zone (33).

26. Device according to one of the preceding claims 1 to 25, characterized in that the receiving device (43) on the front of the tool shank (46) has a lubrication line (76) which introduces a lubricant into the bearing bed (62) for lubricating the Rolling body (30) is formed, wherein the tool shank (46) is pressed with a permanent pressing force to an eccentric roller (64), wherein a support screw (69) projects into a transverse bore and one end of a spring (68) is supported, the other end is supported on a grub screw (73) which is screwed into the tool shank (46), which grub screw (73) bears against a slider, which has a sliding surface (75) in the direction of a

Eccentric role (64) forms and eccentrically in the arrow direction (74) rotatably mounted in a lever (66) to form a movement in the direction of arrow (48) on the profile to be bent (4) and simultaneously in the X direction, whereby a shift in Arrow direction (67) is formed, wherein the main working direction in the direction Y arrow (48) is formed.

27. Device according to one of the preceding claims 1 to 26, characterized in that the eccentric roller (64) is rotatably mounted in the region of the axis of rotation (65), wherein for a Exzenterzustellung a spindle drive is used, direct spindle drive, cylinder drive or lever system or wedge effect ,

28. Device according to one of the preceding claims 1 to 27, characterized in that at a full enclosure of the axially mounted roller rolling body (30, 30 ') a bending of the profile (4) is executable by 360 °, wherein the roller rolling body (30, 30 ') are formed uniformly and have an equally large penetration depth plane parallel to the profile (4) and the bending process is performed by means of a gimbal-guided bending head.

29. Device according to one of the preceding claims 1 to 28, characterized in that the bending is formed as a single-stage, two-stage or three-stage rolling, wherein, for example, the three-stage rolling by three successively arranged roller rolling body (30a, 30b, 30c) is formed, which a maximum penetration depth through the three consecutive Form individual bending operations of the three successively arranged roll rolling body (30a, 30b, 30c).

30. Device according to one of the preceding claims 1 to 29, characterized in that the bending with roller rolling bodies (30, 31, 32, 60, 61, 70,

71) forms a miniaturized bending zone (33) in the region of a bending axis (20).

31. A method for bending profiles with axleless Miniwalzkörpern with a device according to claims 1 to 30, characterized in that the

Bending process by at least in the bending zone (33) arranged, achslos guided mini roll rollers (30, 31, 32, 60, 61, 70, 71) is executable.