Method for reshaping workpiece, primary side pressure device, secondary side pressure device and arrangement for reshaping workpiece

Abstract

The invention relates to a method (100) for reshaping a workpiece (90), to a primary side pressure device (10) for reshaping a workpiece (90), to the use of a primary side pressure device (10) in an arrangement (1) for reshaping (130) a workpiece (90), to a secondary side pressure device (20) for reshaping (130) a workpiece (90), and to an arrangement (1) for reshaping (130) a workpiece (90), wherein (140) the workpiece (90) is deformed across the operating direction (Y ') by means of a force applied to the workpiece (90) by the at least one pressure device (10, 20).

Description

Technical Field

[0001] The present invention generally relates to reshaping a workpiece. In particular, the present invention relates to a method and apparatus for reshaping a workpiece using a primary side press device and a secondary side press device, wherein the workpiece is deformed transverse to an operating direction. The present invention also relates to the use of the apparatus. Background Art

[0002] Bending or folding a workpiece, usually made of sheet material, is one of the most common operations performed in industrial manufacturing. Bending sheet material is usually performed by applying a force to the material to achieve plastic deformation.

[0003] There are many conventional methods for bending sheet materials. Most of these conventional methods use dies for bending, such as V-bending, bottoming, air bending, stamping, U-bending, step bending, etc., all of which are limited by the required radius, flange length of the tool and die, and the force required for bending. Another method is roll bending (which is used to make tubes or cones) or rotary bending. Conventional roll bending technology usually uses multiple rollers arranged in a line, the sheet passes through these rollers (see, for example, GB1524045A), and the sheet is bent longitudinally to the operating direction.

[0004] Typically, steel or similar materials can only be bent or folded in one dimension at a time. This means that in the conventional construction of three-dimensional objects, these objects often have to be joined and welded together from many different parts, while developing a three-dimensional shape from a two-dimensional sheet involves cutting out individual parts.

[0005] In some applications, three-dimensional objects can be constructed by continuous folding in one dimension. This places restrictions on the materials used and the final design of the desired three-dimensional object. Summary of the invention

[0006] In view of the above considerations and other factors, the embodiments described herein have been made. The present invention recognizes the need for improved methods and apparatus for reshaping (e.g., bending) a workpiece. The attached independent claims achieve these objects. Embodiments are set forth in the attached dependent claims and the following description.

[0007] According to a first aspect, a method for reshaping a workpiece is provided, the method comprising: bringing a primary-side pressure device into contact with the workpiece on a primary side of the workpiece; bringing a secondary-side pressure device into contact with the workpiece on a secondary side of the workpiece; moving the workpiece and / or the pressure device relative to each other to obtain a mutual linear movement between the workpiece and the pressure device along an operating direction; and plastically deforming the workpiece in a plane extending transverse to the operating direction using a force applied to the workpiece by at least one of the pressure devices.

[0008] The present method allows the manufacture of products or relatively complex shapes in an industrially simple manner. Relatively complex shapes can be formed by plastically deforming (usually bending) a plate-like workpiece. As a result, the number of components or individual parts of the final product can be significantly reduced. The present method is also highly automatable and customizable and can be used to produce large or small series of products. In addition, low power and energy are required. The same or similar advantages apply to the apparatus and use described below. The present method, apparatus and use facilitate a technique sometimes referred to as "industrial origami".

[0009] The method may include: utilizing the force applied to the workpiece by the primary side press device and the secondary side press device to plastically deform the workpiece in a plane extending transverse to the operation direction. The method may include: performing the plastic deformation by only the force applied to the workpiece by the primary side press device and the secondary side press device.

[0010] Moving the workpiece and / or the pressing device relative to each other to obtain a mutual linear movement between the workpiece and the pressing device along the operating direction may involve movement along a predetermined line.

[0011] Moving the workpiece and / or the press device relative to each other to obtain a mutual linear movement between the workpiece and the press device along the operating direction may involve movement along a predetermined non-straight line.The workpiece may be moved by hand.

[0012] Moving the workpiece and / or the pressurizing device may be performed by a robot controlled by a computer device. Thus, repeated, accurate and complex movements along a predetermined line may be conveniently performed. The method may include clamping the workpiece at a dedicated portion. Thus, the workpiece may include a clamping portion for clamping by a robot during the method.

[0013] Moving the workpiece relative to the pressurizing device may include applying a force to the workpiece along the operating direction using a device different from the pressurizing device. Thus, the pressurizing device may not be used to move the workpiece. The pressurizing device may not have a drive device and therefore cannot move the workpiece along the operating direction. The workpiece may be pushed through the pressurizing device. The workpiece may be pushed through the pressurizing device along the operating direction.

[0014] The workpiece and / or the pressure device can be repeatedly moved back and forth, that is, moved back and forth along the operating direction. The workpiece can be gradually plastically deformed transversely to the operating direction during the back and forth movement.

[0015] The above-mentioned plastic deformation may involve applying a bending moment transverse to the operating direction.

[0016] The secondary side pressurizing device may include a secondary side first pressurizing component and a secondary side second pressurizing component, wherein the secondary side first pressurizing component and the secondary side second pressurizing component include secondary contact surfaces that can be adjusted separately. Using a force applied to the workpiece by at least one of the pressurizing devices to plastically deform the workpiece transverse to the operation direction may include: adjusting an angle α between the secondary contact surfaces.

[0017] The primary side pressure device may include a primary pressure component including a primary contact surface. Plastically deforming the workpiece transverse to the operating direction using a force applied to the workpiece by at least one of the pressure devices may include moving the primary contact surface toward the secondary contact surface. The method may include moving the primary contact surface by actuating a support drive device.

[0018] Typically, the method comprises: plastically deforming the workpiece in a plane extending transverse to the operating direction by force applied to the workpiece by each of the press devices. Typically, each of the press devices applies force to the workpiece synchronously during said plastic deformation.

[0019] The method may include scoring the workpiece by the main pressure device to obtain deformation instructions for subsequently plastically deforming the workpiece. Thus, the method may include first scoring the workpiece and then plastically deforming the workpiece. Thus, the main pressure device may be configured for scoring and may be adapted for this purpose as described below.

[0020] Alternatively, after scoring, the method may include exchanging a primary pressurizing device configured for scoring with another primary pressurizing device not configured for scoring.

[0021] At least one of the pressure devices may be spatially fixed. Alternatively, the workpiece may also be fixed.

[0022] The workpiece may be plastically deformed transversely to the direction of operation until opposing edges of the workpiece contact each other.

[0023] The method may include attaching sections (eg, opposing edges) of the workpieces to each other, for example, by welding. Specifically, the method may include welding the opposing edges of the workpieces to each other, bringing the opposing edges into contact with each other by plastically deforming the workpieces.

[0024] The method may include reshaping the workpiece from a flat plate structure to a curved plate structure, disengaging the primary and secondary side pressure devices from contact with the workpiece, reorienting the workpiece relative to the primary and secondary side pressure devices, contacting the workpiece with the primary and secondary side pressure devices, and continuing to reshape the workpiece by a force applied to the workpiece by at least one of the pressure devices. Thus, the method may include first reshaping the flat plate workpiece to a curved structure, and then reshaping the curved structure to a final product shape. Thus, the final product shape may be further reshaped and more complex than the curved structure. The curved structure shape may be referred to as an intermediate product shape.

[0025] In this way, it is convenient to reshape the flat plate into a closed hollow structure. Therefore, the method may include: keeping the primary side pressure device and the secondary side pressure device at a sufficient distance from each other to allow the curved plate-like structure to be inserted therebetween. For example, the primary side pressure device and the secondary side pressure device may be separated by at least 100 mm, or at least 500 mm.

[0026] Furthermore, the method may comprise attaching sections of the final product shape, such as opposing edges, to each other, such as by welding.

[0027] The method may comprise reshaping the workpiece from a flat plate structure into a beam structure. Thus, the beam structure is an example of a final product shape.

[0028] The method may comprise reshaping the workpiece from a flat plate structure into at least a portion of a two-wheeled vehicle chassis, such as a scooter or motorcycle chassis. Thus, the chassis is an example of a final product shape.

[0029] The method may include bending the workpiece about a tangent to the primary contact surface by an angle β.

[0030] According to a second aspect, there is provided a beam structure manufactured by the above method. The beam structure may be manufactured using the apparatus described herein and reference is made to the corresponding description of the apparatus. The beam structure may be, for example, a chair backrest.

[0031] According to a third aspect, there is provided a two-wheeled vehicle chassis, such as a scooter or motorcycle chassis, manufactured by the method described above.The apparatus described herein may be used to manufacture a two-wheeled vehicle chassis.

[0032] According to a fourth aspect, a main side pressure device for reforming a workpiece is provided, wherein the main side pressure device is suitable for being arranged on the main side of the workpiece when the secondary side pressure device is arranged on the secondary side of the workpiece, the main side pressure device comprising a main side roller component which is capable of rotating about an axis of rotation and comprises an axial proximal end, an axial distal end and a main contact surface, the main contact surface being suitable for applying force to the workpiece from the main side, wherein in use, the workpiece is capable of bending by an angle β about a tangent of the main contact surface, and wherein the main side roller component is configured such that the workpiece, after bending, can extend to an adjacent axial proximal end or an axial distal end and pass through the axis of rotation.

[0033] Here, “suitable for being arranged on the primary side” may be understood as “suitable for being operated on the primary side”.

[0034] The main-side roller part can be configured such that the bending angle β is less than 130 degrees, for example 90 degrees or even only 30 degrees, without the main-side roller part obstructing the workpiece.

[0035] The ratio of the diameter to the width of the main side roller member may be 3 to 10, and in some embodiments 4 to 8. The diameter may be measured along the radial direction of the main side roller member. The width may be measured along the axial direction of the main side roller member.

[0036] The diameter of the main side roller member may be 40 mm to 100 mm.

[0037] The main contact surface may be arranged at the axially proximal end or the axially distal end of the main side roller component. The end of the main side roller component including the main contact surface may be substantially flat so that the workpiece may be bent to abut against the end. The end of the main side roller component including the main contact surface may be flat.

[0038] The main contact surface may be arranged axially between the axial proximal end and the axial distal end of the main-side roller component. For example, the main contact surface may be arranged at the center between the axial proximal end and the axial distal end.

[0039] The primary side roller member may be frusto-conical. The primary contact surface may be annular.

[0040] The primary contact surface may be suitable for scratching a metal workpiece. The radius of curvature of the primary contact surface may be selected for scratching a metal workpiece. The primary contact surface may be made of a material that is hard enough to scratch a metal workpiece, such as a stainless steel workpiece. The thickness of the stainless steel may be in the range of 0.5 mm to 2.5 mm. The primary contact surface may include an acute angle γ, for example in the range of 30 to 80 degrees. Thus, the primary contact surface may include an acute angle γ, may include a radius of curvature selected for scratching a metal workpiece, and may be made of a material that is hard enough to scratch a metal workpiece.

[0041] In some embodiments, particularly if the sheet is made of aluminum, the sheet thickness may be up to, for example, 8 mm.

[0042] The primary contact surface may be adapted to score a metal workpiece and, in addition, to apply a force to the workpiece to bend the workpiece. Thus, the primary contact surface may be configured to achieve the dual purpose of scoring and bending. Thus, the primary contact surface should not be too sharp or too blunt. If the primary contact surface is too sharp, the workpiece may be inadvertently scored when the workpiece is bent only by the primary side roller member. If the primary contact surface is too blunt, the primary side roller member may not score the workpiece.

[0043] The radially inner section of the primary-side roller part can be made of another material than the primary contact surface. Thus, the primary contact surface can be formed by a radially outer section arranged on the radially inner section. In this way, the characteristics of the primary-side roller part can be adjusted according to specific needs. For example, the inner section can be made of a lower-cost, lighter or more ductile material than the outer section.

[0044] The main side press device may include an elongated main side roller member support for carrying the main side roller member. The main side roller member support may be configured so that the bending angle β is less than 130 degrees, such as 90 degrees or even as low as 30 degrees, without the main side roller member support obstructing the workpiece.

[0045] The main side pressure device may include a main roller member support and a main side shaft. The main roller member may carry the main side roller member via the main side shaft, wherein the main side shaft is a cantilever shaft. Thus, one end of the main side shaft may be fixedly attached to the main roller member support. The other end of the main side shaft may be unsupported.

[0046] The main-side shaft may include a bearing that rotatably supports the main-side roller member.

[0047] The main-side roller member is freely rotatable about the rotation axis.

[0048] According to a fifth aspect, there is provided a use of a main-side pressure device in an arrangement for reshaping a workpiece, wherein the workpiece and / or the arrangement are capable of moving relative to each other to obtain a mutual linear movement between the workpiece and the arrangement along an operating direction, the arrangement comprising a secondary-side pressure device suitable for being arranged on a secondary side of the workpiece, the secondary-side pressure device comprising two secondary-side contact surfaces for applying force to the workpiece, wherein the main-side pressure device is suitable for being arranged on the main side of the workpiece and comprises a main-side roller component capable of rotating around an axis of rotation, wherein the main-side roller component comprises an axial proximal end, an axial distal end and a main contact surface, the main contact surface being suitable for applying force to the workpiece from the main side, wherein in use, the workpiece can be bent by an angle β around a tangent of the main contact surface, and wherein the main-side roller component is configured so that the workpiece can extend to an adjacent axial proximal end or axial distal end and pass through the axis of rotation after bending.

[0049] According to the sixth aspect, a secondary side pressurizing device for reforming a workpiece is provided, wherein when the primary side pressurizing device is arranged on the primary side of the workpiece, the secondary side pressurizing device is suitable for being arranged on the secondary side of the workpiece, and the secondary side pressurizing device comprises a secondary side first roller component capable of rotating around a rotation axis and a secondary side second roller component capable of rotating around a rotation axis, wherein the rotation axes of the secondary side first roller component and the second roller component are adjustable.

[0050] The rotation axes of the secondary-side first and second roller members may be adjusted so that the rotation axes of the secondary-side first and second roller members are not parallel.

[0051] The axes of rotation of the secondary first and second roller members may be adjustable during operation, ie during mutual linear movement between the arrangement and the plate structure.

[0052] The rotation axes of the secondary-side first roller member and the second roller member may not be parallel, and therefore, no matter how they are adjusted, the rotation axes may not be parallel.

[0053] The rotation axes of the secondary-side first and second roller members may be adjusted so that the rotation axes intersect each other.

[0054] The circumferential contact surface of the secondary side roller member may be conical. The secondary side roller member may be frustoconical. The contact surface of the secondary side roller member may be straight when viewed from the side (orthogonal to the axis of rotation).

[0055] The contact surfaces of the secondary side roller member may touch or substantially touch each other at one point. When the rotation axis of the secondary side first and second roller members is adjusted, the contact surfaces of the secondary side roller member may also touch or substantially touch each other at this point. Regardless of how the rotation axis is adjusted, the contact surfaces may touch each other at this point. This point may be referred to as a rotation center or a deformation center. This point may be fixed.

[0056] The circumferential contact surface of the secondary side first roller component can extend from the axial proximal end to the axial distal end, the circumferential contact surface of the secondary side second roller component can extend from the axial proximal end to the axial distal end, and the secondary side pressurizing device can be configured so that the axial proximal end of the secondary side first roller component and the axial proximal end of the second roller component are adjacent.

[0057] The circumferential contact surface of the secondary first roller member may extend in a straight line between the axial proximal end and the axial distal end. The circumferential contact surface of the secondary second roller member may extend in a straight line between the axial proximal end and the axial distal end.

[0058] When the rotation axis is adjusted, that is, regardless of how the rotation axis is adjusted, the secondary-side first and second roller members may also be adjacent.

[0059] The rotation axis may be set (adjusted) such that the circumferential contact surfaces form an angle α that is smaller than 180 degrees, such as 130 degrees, 90 degrees or 30 degrees.

[0060] The secondary side pressing device includes a secondary side first shaft, a first traveling element and a secondary side roller member support, wherein the secondary side first roller member is carried by the secondary side first shaft, the secondary side first shaft is carried by the first traveling element movably held in the secondary side roller member support, and the first traveling element is movable along an arc path. Moving the first traveling element along the arc path can adjust the rotation axis of the secondary side first roller.

[0061] The secondary side pressing device includes a secondary side second shaft and a second traveling element, wherein the secondary side second roller member is carried by the secondary side second shaft, and the secondary side second shaft is carried by a second traveling element movably held in the secondary side roller member support, and the second traveling element is movable along an arc path. Moving the second traveling element along the arc path can adjust the rotation axis of the secondary side second roller.

[0062] The secondary side first axis may be a cantilever axis. The secondary side second axis may be a cantilever axis.

[0063] The secondary first shaft may include a bearing for rotatably supporting the secondary first roller member. The secondary second shaft may include a bearing for rotatably supporting the secondary second roller member. In both cases, two bearings may be arranged at a distance from each other to withstand high radial loads. High radial loads may occur in particular when the secondary shaft is a cantilever shaft. In addition, the secondary roller member may generally be subject to bending moments due to contact with the workpiece.

[0064] The secondary side pressure device may include a drive device for moving the first travel element and / or the second travel element relative to the secondary side roller member support. Thus, the drive device can adjust the rotation axis of the secondary side first roller and the second roller. The drive device can be manually controlled or controlled by a computer control device.

[0065] The ratio of the diameter to the width of the secondary side roller member may be 1.5 to 4.

[0066] The diameter of the secondary side roller member may be 50 mm to 200 mm, and the diameter of the secondary side roller member may be 80 mm to 140 mm at the axial proximal end and 50 mm to 90 mm at the axial distal end.

[0067] According to the seventh aspect, there is provided a use of a secondary side pressure device in an arrangement for reshaping a workpiece, wherein the workpiece and / or the arrangement are capable of moving relative to each other to obtain a mutual linear movement between the workpiece and the arrangement along an operating direction, the arrangement comprising a main side pressure device suitable for being arranged on a main side of the workpiece, the main side pressure device comprising a main contact surface for applying force to the workpiece, wherein the secondary side pressure device comprises a secondary side first roller component capable of rotating around a rotation axis and a secondary side second roller component capable of rotating around a separate rotation axis, wherein the rotation axes of the secondary side first roller component and the second roller component are adjustable.

[0068] According to an eighth aspect, an arrangement for reshaping a workpiece is provided, wherein the workpiece and / or the arrangement are capable of moving relative to each other to obtain a mutual linear movement between the workpiece and the arrangement along an operating direction, the arrangement comprising a main side pressure device adapted to be arranged on a main side of the workpiece, the main side pressure device comprising a main contact surface for applying force to the workpiece, and a secondary side pressure device adapted to be arranged on a secondary side of the workpiece, the secondary side pressure device comprising two secondary contact surfaces for applying force to the workpiece, wherein, viewed from the operating direction, the main contact surface is located between at least some portions of the secondary contact surfaces so that the workpiece can be deformed transversely to the operating direction.

[0069] The primary contact surface and the secondary contact surface may be located at the same position along the operating direction.

[0070] Both the primary contact surface and the secondary contact surface may be arranged in a plane orthogonal to the operating direction.

[0071] The primary-side pressing means and the secondary-side pressing means and the contact surface may correspond to those described above and in the description of the exemplary embodiment.

[0072] The main contact surface may be shaped so that the main contact surface and the flat workpiece portion can be in point contact. For example, the main contact surface may be annular.

[0073] Thus, the primary contact surface may be shaped such that it may engage the flat workpiece portion along a line during the mutual linear movement. If the mutual linear movement is non-linear, the line is also non-linear.

[0074] The secondary contact surface may be shaped such that the secondary contact surface and the workpiece may engage in line contact.

[0075] Thus, the secondary contact surfaces may be shaped such that the respective secondary contact surfaces may engage a planar workpiece portion on the surface during mutual linear movement.

[0076] The secondary contact surface may be conical.

[0077] The secondary-side pressing device may include: a secondary-side first roller member rotatable about a rotation axis; and a secondary-side second roller member rotatable about a separate rotation axis.

[0078] The axis of rotation may be adjustable, such as described above or as described in the exemplary embodiments below.

[0079] The secondary-side first roller member and the secondary-side second roller member may have a frustoconical shape.

[0080] The main-side pressing device may include a main-side roller member rotatable about a rotation axis that is not parallel to a rotation axis of the secondary-side roller member.

[0081] The major-side roller component may include a major contact surface configured for scoring a workpiece.

[0082] The contact surfaces of the primary side roller member and the secondary side roller member may meet or substantially meet each other at the point defined above. Therefore, the point defined above may be referred to as a deformation center.

[0083] The primary contact surface may be movably arranged, preferably linearly movably arranged, such that the primary contact surface can be moved towards and away from the secondary contact surface.

[0084] The primary contact surface may be movable such that the distance between the primary contact surface and the secondary contact surface may be at least 100 mm or at least 500 mm.

[0085] The arrangement may include a base structure on which the primary side pressure device and the secondary side pressure device are mounted. The base structure may include a frame support for the primary side pressure device. The frame support may include means for moving the primary side pressure device. The means may be, for example, manual (e.g., including threads), hydraulic or electric. The means for moving the primary side pressure device may be an electric jack or a hydraulic jack.

[0086] The base structure may include an elongated support member for the secondary side pressure device, also referred to as a base support member. The length of the elongated support member for the secondary side pressure device is at least 500 mm. The secondary side pressure device may be supported only by the elongated support member. The support member may be oriented along an axis (Z) extending in a plane (XZ) orthogonal to the operating direction (Y').

[0087] The base structure may comprise an elongated support for the main side pressure means, also referred to as a top support. The length of the elongated support for the main side pressure means is at least 500 mm. The main side pressure means may be supported only by said elongated support. Said support may be oriented along an axis (Z) extending in a plane (XZ) orthogonal to said operating direction (Y'). The elongated support for the main side pressure means may comprise means for moving the main side pressure means.

[0088] The base structure may be fixed. The base structure may extend substantially in a plane orthogonal to the operating direction. Thus, the base structure may be substantially flat. Furthermore, the base structure may have a relatively small extension in directions other than the in-plane direction. Such a base structure, in which the pressure device is arranged, may save space. Such a base structure and the pressure device may also allow relatively large workpieces to be reshaped, which may pass through the base structure during the reshaping.

[0089] The dimensions of the infrastructure can be set so that workpieces of one to three meters in at least one dimension can pass through. The workpiece can be a steel plate, such as a stainless steel plate with a width of one to three meters. For example, the workpiece can be cut from a stainless steel coil with a width of 1000, 1250 or 1500 mm. Therefore, the width of the infrastructure (e.g. measured along a horizontal axis (X) extending in a plane (XZ) orthogonal to the operating direction) can be selected so that a workpiece with a width of 1500 mm can pass through the infrastructure. In one embodiment, the width of the infrastructure or its frame supports is one to three meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] Embodiments of the present solution will now be described by way of example with reference to the accompanying schematic drawings.

[0091] Figure 1 A first embodiment of an arrangement for reshaping a workpiece is shown.

[0092] Figure 2 A main side press device for reshaping a workpiece is shown, wherein the main side press device can form Figure 1 (or Fig.12 ) as part of the arrangement.

[0093] Figure 2a to Figure 2e Shows Figure 2 (or Fig.12 ) is an exemplary embodiment of a main-side roller component of a main-side pressing device.

[0094] Figure 3 A secondary side press device for reshaping a workpiece is shown, wherein the secondary side press device can form Figure 1 (or Fig.12) is part of the arrangement.

[0095] Figures 4 to 6 Illustration of how to use Figure 1 (or Fig.12 ) arrangement to reshape the plate-like workpiece.

[0096] Figure 6a Another main side pressurizing device is shown.

[0097] Figure 7 Shows Figure 2 and Figure 3 The press device and the workpiece to be reshaped.

[0098] Figure 8 A method of reshaping a workpiece is schematically illustrated. The method may involve the use of an arrangement and a press device as illustrated in the preceding or following figures.

[0099] Figures 9a to 9c The reshaping of a plate-like workpiece into a hollow beam structure was demonstrated.

[0100] Figures 10a to 10c Demonstrated reshaping of a plate-like workpiece into a seat back.

[0101] Figures 11a to 11c Demonstrated the process of reshaping a plate-like workpiece into a two-wheeled vehicle chassis.

[0102] Fig.12 A second embodiment of an arrangement for reshaping a workpiece is shown. DETAILED DESCRIPTION

[0103] In the drawings, for the sake of clarity, not all reference numerals are included in every figure. In addition, terms such as "upper", "lower" and "horizontal" refer to the device when it is in the orientation shown in the drawings. Those skilled in the art will recognize that the device can assume different orientations when in use.

[0104] Figure 1 Shown is an arrangement 1 for reshaping a workpiece 90 and a workpiece 90 to be reshaped by the arrangement 1. Reshaping typically involves folding or bending, so the arrangement 1 may be referred to as a bending arrangement 1 or a bending machine 1. Fig.12 An alternative embodiment of arrangement 1 is shown.

[0105] According to co-pending Swedish patent application number 2151044-1, which is incorporated herein by reference, the present solution may be used to process a two-dimensional sheet material into a three-dimensional shaped object. Thus, reshaping may mean forming a two-dimensional sheet material into a three-dimensional shaped object.

[0106] The arrangement 1 may generally extend in a plane which is Figure 1 (as well as Figure 5 , Figure 7 and Fig.12 ) is represented as the XZ plane in FIG. During reshaping, the workpiece 90 may be moved through the XZ plane of the arrangement 1 along an operating direction Y' (also referred to as a machining direction Y' or a feed direction Y'), which extends through the plane (XZ) of the arrangement 1. The operating direction Y' may be substantially orthogonal to the plane (XZ) of the arrangement 1.

[0107] In the example shown ( Figure 1 and Fig.12 ), the arrangement 1 generally extends in a flat vertical plane XZ, and the workpiece 90 moves in a horizontal plane XY through the vertical plane XZ. The extension of the arrangement 1 in the XZ plane may significantly exceed its extension in any other plane, such as the orthogonal vertical YZ plane or the orthogonal horizontal XY plane. The workpiece 90 moves along an operating direction Y' extending in the horizontal plane XY.

[0108] The XY plane (in which the workpiece 90 moves) may be orthogonal to the XZ plane of the arrangement 1. Typically, the workpiece is substantially along Figure 1 (and Figure 7 ) moves along the non-linear operating direction Y'.

[0109] In the solution described herein, the arrangement 1 is fixed, while the workpiece 90 is movable. In other embodiments (not shown), the arrangement 1 may be movable, while the workpiece 90 is fixed. The latter may be beneficial if the workpiece 90 is very large, for example several meters long or wide (e.g. five to ten meters).

[0110] In other embodiments (not shown), both the arrangement 1 and the workpiece 90 are movable. Importantly, during operation, there is a mutual linear movement between the workpiece 90 and the arrangement 1. The direction of the mutual linear movement is referred to herein as the operating direction Y'. The operating direction Y' may be linear, or generally non-linear.

[0111] Figures 1 to 7 and Fig.12 An embodiment of an arrangement 1 and its components is shown. The arrangement 1 includes a primary side press device 10 and a secondary side press device 20. In the figures, the primary side 90a is the first side or upper side, and the secondary side 90b is the second side or lower side. Therefore, the primary side 90a and the secondary side 90b can be opposite sides relative to the workpiece 90.

[0112] The primary side press device 10 comprises a primary contact surface 14 for applying a force from the primary side 90a to the workpiece 90. During operation, the primary contact surface 14 and thus the primary side press device 10 are in contact with the workpiece 90.

[0113] The secondary side pressurizing device 20 includes a secondary side first contact surface 24' for applying force from the secondary side 90b to the workpiece 90. In addition, the secondary side pressurizing device 20 includes a secondary side second contact surface 24", for applying force from the secondary side 90b to the workpiece 90. In the present embodiment, the secondary side first contact surface 24' and the second contact surface 24" have the same shape.

[0114] In some (not shown) embodiments, the shapes of the first contact surface 24 ′ and the second contact surface 24 ″ are not the same. For example, the second secondary contact surface 24 ″ may have a greater axial extension than the secondary first contact surface 24 ′ to increase the ability of the second secondary contact surface 24 ″ to apply force to the workpiece 90 .

[0115] During operation, the workpiece 90 is clamped between the primary side pressing means 10 of the primary side 90a and the secondary side pressing means 20 of the secondary side 90b, more precisely between the primary contact surface 14 and the secondary contact surfaces 24', 24".

[0116] Since the pressure devices 10, 20 apply force to the workpiece 90, the workpiece 90 may be plastically deformed, in this embodiment, bent. As shown in the figure, the workpiece is deformed across the operation direction Y', or more precisely, deformed in the XZ plane extending substantially transverse to the operation direction Y'. In the prior art apparatus and method, the workpiece is usually deformed in a plane extending parallel to the operation direction, for example, see GB1524045A Figure 2 .

[0117] Seen in the operating direction Y′, ie through the XZ plane of the arrangement 1 , the first contact surface 24 ′ and the second contact surface 24 ″ extend on both sides of the main contact surface 14 .

[0118] The forces applied by the primary side pressure device 10 and the secondary side pressure device 20 act on the same portion of the workpiece 90 as seen along the operating direction Y'. The forces applied by the primary side pressure device 10 and the secondary side pressure device 20 act in the same plane, i.e., in the XZ plane of the arrangement 1. In typical prior art devices and methods, the corresponding forces are instead applied to the longitudinally (along the operating direction) separated portions of the workpiece, see GB1524045A Figure 2 .

[0119] Furthermore, the forces applied by the primary-side pressurizing device 10 and the secondary-side pressurizing device 20 act simultaneously on the workpiece 90 at the same location of the workpiece as viewed along the operation direction Y′.

[0120] Importantly, the workpiece 90 can be reshaped only by the first press device 10 and the second press arrangement 20 without other press devices or other force or support devices. In the examples described herein, the workpiece 90 is reshaped only by the force applied by the first press device 10 and the second press arrangement 20.

[0121] In this embodiment, the main side pressure device 10 can move vertically and can press against the workpiece 90 (from above), while the fixed secondary side pressure device 20 supports the workpiece 90 (from below). Therefore, the main side can be called the punching side or the pushing side. Correspondingly, the secondary side can be called the supporting side, the die side or the anvil side.

[0122] Therefore, the main side pressurizing device 10 can be called a punching device 10 or a pushing device 10. The secondary side pressurizing device 20 can be called a support pressurizing device 20, a mold pressurizing device 20 or an anvil pressurizing device 20. The main side roller component 11 described below can be called a punching or pushing roller component 11. The secondary side roller components 21', 21" can be called support members, molds or anvil roller components 21', 21".

[0123] The secondary side pressure device 20 can be spatially fixed. In this article, the term "spatially" fixed is used to include components that can rotate (such as roller components 11, 21', 21") or components that are movable within a fixed structure. Therefore, the secondary side pressure device 20 can be represented as spatially fixed even if it includes internal movable traveling elements 27', 27" and the components they carry.

[0124] Special References Figure 1 , the arrangement 1 may comprise a base structure which, in this embodiment, is securely mounted to a floor. Thus, the base structure may be fixed. The base structure holds the pressurizing means 10, 20.

[0125] The base structure may include a frame support 2 or door 2 to hold the primary side press 10. The base structure may include a base support 3 to hold the secondary side press 20. The base structure may be of sufficiently large size to allow the arrangement 1 to process relatively large workpieces 90, such as workpieces 90 that are one to three meters large in at least one dimension (e.g., stainless steel plates).

[0126] In the present example, the frame support 2 provides a through hole for the workpiece 90, which is approximately two meters wide and two meters high. The frame support 2 can extend upward from a floor or similar surface on which the base structure is mounted. As disclosed, the frame support 2 can include a beam structure, which includes, for example, three beams that are attached to each other to provide a square structure.

[0127] Thus, in the present example, the base structure holds the press devices 10, 20 and provides a through hole for the workpiece 90, the through hole having a width and height of one to three meters in a typical embodiment. The dimensions of the base structure are here measured in the XZ plane, ie the general plane of the arrangement 1.

[0128] In other embodiments, the frame support 2 may be omitted and the primary side pressurizing device 10 may be installed, for example, in a ceiling.

[0129] The base support member 3 may be in the form of a column or the like which may extend upwardly from a floor or similar surface on which the substructure is mounted.

[0130] As will be apparent from this disclosure, the workpiece 90 may assume a shape toward and beyond the primary-side press device 10 and / or toward and beyond the secondary-side press device 20 during re-forming.

[0131] In some cases, the workpiece 90 may hang downward from the secondary side press device 20, in other words, protrude toward and beyond the secondary side press device 20, in which case the workpiece 90 must not be blocked by the floor or base support 3. Therefore, the base support 3 can extend from the floor or similar surface on which the foundation structure is mounted. The base support 3 is preferably elongated, typically with a height that significantly exceeds the width. The ratio of height to width is at least 2. Figure 1 In the present example, the base support 3 is approximately one meter high (along the Z axis). In the present example, the secondary side pressurizing device 20 is held only by the base support 3 .

[0132] In some cases, the workpiece 90 may extend upward from the primary side press 10 (see, e.g. Figure 6 ), in other words, protruding toward and beyond the main-side press device 10, and in this case, the workpiece 90 must not be blocked by the frame support 2 or the ceiling. Therefore, the base structure may include a top support 4 extending from the frame support 2 (or the ceiling). The main-side press device 10 is mounted on the top support 4. In the present example, the main-side press device 10 is supported only by the top support 4.

[0133] Thus, the primary side press device 10 can be held by the elongated top support 4, while the secondary side press device 20 can be held by the elongated bottom support 3. These supports 3, 4 can keep the press devices 10, 20 away from surrounding obstacles (such as the floor and ceiling). The bottom and top supports 3, 4 are preferably elongated so that the workpiece 90 can extend or protrude away from the press devices 10, 20 on all sides of the bottom and top supports 3, 4. In the current example, the elongated bottom and top supports 3, 4 are oriented along the vertical Z axis in the XZ plane (i.e., the general plane of the arrangement 1).

[0134] like Figure 1 and Fig.12 As shown, the top support 4 may include a top support 4 driving device to move the primary side pressurizing device 10 to or away from the secondary side pressurizing device 20. In particular, the top support 4 driving device may linearly move the primary side pressurizing device 10. In the current example, the top support 4 driving device is implemented as a hydraulic jack.

[0135] In other embodiments (not shown), the primary side press device 10 can also move in the XZ plane (i.e., the general plane of the arrangement 1), so that the primary side press device 10 can be tilted. In this way, the primary side press device 10 can move toward or from the secondary side press device 20 at an angle in the plane (rather than horizontally, as shown herein). Such an embodiment may be advantageous because complex intermediate product shapes may hinder the primary side press device 10 from moving in a horizontal direction.

[0136] In the present example, the primary and secondary roller members 11, 21', 21" (described in more detail below) are freely rotatably journalled on respective shafts 15, 25', 25". When the workpiece moves through the arrangement 1, the roller members 11, 21', 21" are rotationally engaged with the workpiece 90. The movement of the workpiece 90 causes the roller members 11, 21', 21" to rotate.

[0137] In other embodiments, one or more roller members 11 , 21 ′, 21 ″ may be driven, for example, by an electric motor. Such driven roller members 11 , 21 ′, 21 ″ may assist the passage of a workpiece through the arrangement 1 .

[0138] Special References Figure 2 and Figure 7 The main-side pressing device 10 may include a main-side roller member 11 forming a main contact surface 14 .

[0139] The main side roller part 11 can rotate about an axis of rotation 12, which can pass through the main side shaft 15 from the center and can carry the main side roller part 11. The axis of rotation 12 can be called the main side roller part axis of rotation 12. The main side roller part 11 can be journaled on the main side shaft 15 so that it can rotate freely. A bearing (not shown), such as a ball bearing, a sliding bearing, a rolling bearing or a needle bearing, can be arranged on the main side shaft 15 to rotatably support the main side roller part 11.

[0140] As shown in the figure, the main side shaft 15 can be held by the main roller member support 17. The main roller member support 17 can in turn be held by the top support 4. The end of the main side roller member 11 closest to the main roller member support 17 can be referred to as the axial proximal end 14p. The opposite outer end of the main side roller member 11 can be referred to as the axial distal end 14d. In the current example, the main contact surface 14 is formed by the axial distal end 14d of the main side roller member 11. Therefore, the main contact surface 14 can coincide with the axial distal end 14d of the main side roller member 11.

[0141] As shown, one end (proximal end) of the main side shaft 15 may be fixedly attached to the main roller member support 17, while the other end (distal end, which carries the main side roller member 11) may be free. In other words, the main side shaft 15 may be supported at only one end.

[0142] like Figure 5 and Figure 6 As shown, the workpiece 90 can be moved about a tangent line t (eg, Figure 2 In other words, the workpiece 90 can be bent transversely to the main contact surface 14, or more precisely, transversely to the tangent line t of the main contact surface 14.

[0143] In the illustrated example, the main contact surface 14 is arranged above the workpiece 90 (on the first side of the workpiece 90), and the workpiece 90 bends upward (toward the first side) when deformed by the press devices 10, 20. Therefore, the main side press device 10 is arranged on the main side 90a of the workpiece 90, and the workpiece 90 bends toward the main side 90a.

[0144] For example, from Figure 5 and Figure 6 As can be clearly seen in the figure, the main side roller part 11 is configured so that the workpiece 90 can extend to the side of the axial distal end 14d of the main side roller part 11 (to the right in the figure) after bending. The workpiece 90 can extend past or beyond the rotation axis 12 of the main side roller part 11 after bending. Figure 6a In the embodiment of the present invention, the workpiece 90 may extend parallel to the main-side roller member 11 after bending, more specifically, parallel to the axial distal end 14d of the main-side roller member 11. Figure 5 and Figure 6 As can be clearly seen in FIG. 1 , the main-side roller part 11 is configured such that the workpiece 90 , after bending, can extend to the side of the axial proximal end 14 p (to the left in the figure) and past the axis of rotation 12 .

[0145] In other words, a portion of the workpiece 90 after reshaping may be located on one or both axially outer sides or axial end faces of the main side roller member 11. The rotation axis 12 (eg Figure 6 As shown) may pass through that portion or portions of the workpiece 90.

[0146] The main-side roller member 11 may be configured such that the bending angle β is less than 130 degrees without the main-side roller member 11 obstructing the workpiece 90 .

[0147] The bending angle β can be defined as the angle at which the workpiece is bent by the pressing device 10, 20, such as Figures 4 to 6 shown. Figure 5 The bend angle β (included angle) is shown to be approximately 155 degrees. Figure 6 The bend angle β is shown to be approximately 105 degrees.

[0148] The ratio of the diameter to the width of the main side roller member 11 illustrated herein is approximately 6. Therefore, the main side roller member 11 has a radial extension that significantly exceeds the axial extension. In some embodiments, a larger diameter-to-width ratio results in a smaller possible bending angle β. However, a larger diameter-to-width ratio may require a larger force to be applied by the press device 10, 20 to achieve bending, because the contact between the main side roller member 11 and the workpiece 90 increases as the diameter of the main side roller member 11 increases. In addition, a larger diameter-to-width ratio may cause the material of the main side roller member 11 to be subjected to high stress. A smaller diameter-to-width ratio may be beneficial for curved scoring and curved bending of workpieces.

[0149] In a typical embodiment, the ratio of the diameter to the width of the main side roller member 11 is 3-10, preferably in the range of 4-8.

[0150] In a typical embodiment, the diameter of the main side roller member 11 can be 40 mm to 120 mm. In the current example, the diameter of the main side roller member 11 is about 70 mm. Such a diameter or a diameter of about 60 mm to 90 mm may be suitable for reshaping a workpiece 90 with a maximum size of about 1 meter. For example, a stainless steel plate workpiece 90 with a thickness ranging from 0.5 mm to 2.5 mm.

[0151] The width (axial extension) of the main-side roller member 11 may be 8 to 20 mm in a typical embodiment. In the present example, the width of the main-side roller member 11 is approximately 12 mm.

[0152] As described above and as Figure 2 and Figures 4 to 7 As shown, the main contact surface 14 can be arranged at the axial distal end 14d of the main side roller part 11. In other embodiments (not shown), the main contact surface 14 can be arranged at the axial proximal end 14p of the main side roller part. Such embodiments may not be very advantageous because they generally do not allow for a small bending angle β.

[0153] In the present example, the main side roller part 11 is truncated cone-shaped. Figure 2 and Figure 2a The latter figure shows a frustoconical main side roller part 11 with a smoother main contact surface 14 (ie with a larger radius of curvature).

[0154] Figure 2b A conical main side roller part 11 is shown, Figure 2c A pointed or double-conical main-side roller part 11 is shown, wherein the two cones point opposite to each other. Figure 2d A main-side roller part 11 is shown which is cylindrical in shape with a pointed radially outer section.

[0155] Therefore, if Figure 2c and Figure 2d As shown, the main contact surface 14 can be arranged axially between the axial proximal end 14p and the axial distal end 14d of the main side roller member 11. The main side roller member 11 may include a radial symmetry plane ( Figure 2c and Figure 2d ), which may be beneficial when the main-side roller part 11 is subject to high loads.

[0156] Figure 2e A cylindrical main-side roller part 11 is shown. Figure 2e The main contact surface 14 of the main side roller member 11 is configured to apply force to the workpiece 90 without scratching the workpiece 90. The contact surface 14 is cylindrical in this embodiment and extends parallel to the main side roller member rotation axis 12.

[0157] The primary contact surface 14 may be suitable for scoring the metal workpiece 90. The primary contact surface 14 may be relatively sharp and include an acute angle γ (eg, Figure 2a The angle γ may be in the range of 30 to 80 degrees, preferably about 45 to 60 degrees. The radius of curvature of the primary contact surface 14 may be selected to be able to score a metal workpiece.

[0158] The primary side roller member 11 may be adapted to first score the workpiece 90 and then bend the workpiece across the score 135 (eg, Figure 7 and Figure 9b ). Thus, the scoring or notch can be used as a deformation instruction 135 for bending (plastic deformation). The deformation instruction 135 has a reduced thickness relative to adjacent portions of the workpiece 90. The primary contact surface 14 can be made of a material that is hard enough to score a metal workpiece 90, such as a steel or stainless steel workpiece 90. Since the primary contact surface 14 can be used both to score the workpiece 90 and to apply a force to the workpiece 90 to bend the workpiece 90 (without scoring), the primary contact surface 14 should be relatively sharp but not too sharp.

[0159] In some embodiments, the radially inner section of the main side roller member 11 may be made of another material than the radially outer section of the main side roller member 11 forming the main contact surface 14. For example, the radially inner section of the main side roller member 11 may be made of a more elastic material than the radially outer section.

[0160] As shown, the main roll member support 17 can carry the main side roll member 11. The main roll member support 17 is preferably elongated, which allows the bending angle β to be less than 130 degrees without the main roll member support 17 obstructing the workpiece 90 (see, for example Figure 6 ). As shown in the figure, the side surface of the main roller member support 17 faces the same direction as the axial distal end 14d of the main side roller member 11, and can be arranged so as not to hinder the workpiece 90 when the workpiece 90 is bent toward the main side.

[0161] The side surface (or distal side surface) 17d of the main roller member support 17 faces the same direction as the axial distal end 14d of the main side roller member 11, and the side surface (or distal side surface) 17d can be substantially flush with the distal end surface of the main side roller member 11 (refer to Figure 6a ), or a countersunk head relative to the distal end surface of the main side roller member 11. Therefore, the main roller member support 17 can be constructed so as not to hinder any curved portion of the workpiece extending beyond the axial distal end 14d of the main side roller member 11. In the illustrated example, the distal side surface 17d of the main roller member support 17 has a small overhang, which means that the distal side surface 17d extends axially (at Figure 2 to the right) beyond the distal end surface of the main side roller component 11.

[0162] like Figure 2 , Figure 6a and Figure 7 As shown, the axial distal end 14 d of the main-side roller member 11 may be flat. Therefore, the main-side roller member 11 may be configured so as not to obstruct any curved portion of the axial distal end 14 d of the main-side roller member 11 extending beyond the workpiece 90 . Figures 4 to 6 A portion of the main-side shaft 15 or a retaining element such as a nut is shown, which optionally protrudes axially from the axially distal end 14d of the main-side roller member 11 .

[0163] from Figure 6a It can be clearly seen in FIG. 1 that the main roller member support 17 and the main side roller member 11 can be configured so that the workpiece can be bent 90 degrees around the tangent line t of the main side roller member 11 on the axial distal end 14d side of the main side roller member 11. The top support 4 can be designed to extend flush with the axial distal end 14d of the main side roller member 11 so that the top support 4 does not hinder the workpiece from being bent 90 degrees.

[0164] As reference Figure 5 and Figure 6As described above, the main side roller member 11 is configured so that the workpiece 90 can extend to the vicinity of the axial proximal end 14p and pass through the rotation axis 12 after bending. Therefore, the main side roller member support 17 and the main side roller member 11 can be configured so that the workpiece can be bent around the main side roller member 11 on the side of the axial proximal end 14p thereof. In summary, a bending angle β of less than 90 degrees can be obtained. Figure 6a Embodiments allow for a bend angle β as low as about 60 degrees.

[0165] It will be appreciated that the primary roller member 11 and its suspension (including the design of the primary shaft 15) may be modified to achieve a smaller bending angle β. The bending angle β may be reduced to approximately 30 degrees, matching the 30 degree angle α formed by the secondary contact surfaces 24', 24" (described below).

[0166] In the present embodiment, the rotation axis 12 of the main-side roller part 11 extends in the XZ plane, ie in the overall plane of the arrangement 1 .

[0167] Special References Figure 3 and Figure 7 , the secondary side pressurizing device 20 may include secondary side first and second roller members 21 ′, 21 ″ forming secondary contact surfaces 24 ′, 24 ″.

[0168] The secondary side first roller member 21 'is capable of rotating about an axis of rotation 22', which may extend from the center through the secondary side first shaft 25', which may carry the secondary side first roller member 21 '. The axis of rotation 22' may be referred to as the secondary side first roller member axis of rotation 22'. The secondary side first roller member 21 'is journaled on the secondary side first shaft 25' so as to be freely rotatable. A bearing (not shown) (e.g., a ball bearing, a sliding bearing, a roller bearing, or a needle bearing) may be arranged on the secondary side first shaft 25' to rotatably support the secondary side first roller member 21 '. Two bearings may be arranged at a certain distance from each other in the axial direction.

[0169] like Figure 3 As best illustrated in the figure, the secondary side first axis 25' can be carried by a first radial support 26'. As in the present example, the first radial support 26' can be substantially rod-shaped and include a distal opening for receiving the secondary side first axis 25'. The first radial support 26' can extend orthogonally to the secondary side first axis 25'. The proximal end of the first radial support 26' can be attached to the first traveling element 27'. The first radial support 26' can be formed as an integral piece with the first traveling element 27' so that it can withstand greater forces. The first traveling element 27' can be movably carried in the secondary side roller member support 28. More specifically, the first traveling element 27' can move along an arc path 29.

[0170] The secondary side roller member support 28 may include an arc-shaped structure, and the first traveling element 27' may be guided in the arc-shaped structure. As shown in the figure, the first traveling element 27' may be an arc-shaped structure corresponding to the arc-shaped structure of the secondary side roller member support 28. The secondary side roller member support 28 and the first traveling element 27' may be configured so that the first traveling element 27' can slide in the secondary side roller member support 28 along the arc-shaped path 29. When the first traveling element 27' moves along the arc-shaped path 29, the first radial support 26' performs a rotational movement like a clock hand.

[0171] from Figure 3 It can be clearly seen that the secondary side second roller component 21" and its suspension can be similar to the secondary side first roller component 21'. The secondary side second roller component 21' is capable of rotating around a rotation axis 22", which can extend from the center through the secondary side second shaft 25", which can carry the secondary side second roller component 21". The rotation axis 22" can be referred to as the secondary side second roller component rotation axis 22". The secondary side second roller component 21" can be freely rotatably journaled on the secondary side second shaft 25". One or two bearings (not shown), such as ball bearings, sliding bearings, rolling bearings or needle bearings, can be arranged on the secondary side second shaft 25", to rotatably support the secondary side second roller component 21".

[0172] In one embodiment, one bearing is arranged on the primary shaft 15 to rotatably support the primary roller member 11, and two bearings are arranged on each of the secondary shafts 25', 25" to rotatably support the corresponding secondary roller member 21', 21".

[0173] The secondary side second shaft 25" can be carried by a second radial support 26". The second radial support 26" can be basically rod-shaped and include a distal opening for receiving the secondary side second shaft 25". The proximal end of the second radial support 26" can be attached to the second traveling element 27". The second radial support 26" can be formed as an integral piece with the second traveling element 27", so that it can withstand greater forces. The second traveling element 27" can be movably carried in the above-mentioned secondary side roller component support 28, or movably carried in a separate support (not shown). The second traveling element 27" is capable of moving along an arc path 29.

[0174] The second traveling element 27" may be guided in the same arc structure as the first traveling element 27'. As shown, the first traveling element 27' and the second traveling element 27" may be arranged adjacent to each other in the arc structure of the secondary side roller member support 28. In the present example, the first traveling element 27' and the second traveling element 27" are capable of being moved independently ( Figure 5 and Figure 6 ).

[0175] The secondary roller member support 28 and the second traveling element 27" may be configured so that the second traveling element 27" can slide along the arc path 29 in the secondary roller member support 28. When the second traveling element 27" moves 23" along the arc path 29 ( Figure 3 ), causing the second radial support 26" to rotate like a clock hand ( Figure 7 double-curved arrow in the figure).

[0176] Therefore, as mentioned above and from Figure 3 It can also be clearly seen that the rotation axes 22', 22" of the secondary first and second roller parts 21', 21" are adjustable 23', 23". In other words, the direction or orientation of the rotation axes 22', 22" can be adjusted. More precisely, the rotation axes 22', 22" are individually adjustable ( Figure 5 and 6 ). As described herein, the rotational axes 22 ′, 22 ″ may be adjusted during operation.

[0177] As shown in the figure, the secondary side shaft 25', 25" can be a cantilever shaft. The proximal end of the secondary side shaft 25', 25" can be fixedly attached to the corresponding radial support 26', 26", while the distal end (carrying the secondary side roller parts 21', 21") can be free. In other words, the corresponding secondary side shaft 25', 25" can be supported at only one end. The distal end of the corresponding secondary side shaft 25', 25" can include the above-mentioned bearing.

[0178] The current design of the secondary side pressure device 20 allows to accurately and stably set and control the rotation axes 22', 22" of the secondary side first and second roller parts 21', 21" in a simple manner. It will be understood that alternative solutions are conceivable. The secondary side first and second shafts 25', 25" can be held, for example, by a separate robot arm. Similarly, the main side shaft 15 can be held by a separate robot arm.

[0179] In the present embodiment, the rotation axes 22', 22" of the secondary side first and second roller members 21', 21" extend in the XZ plane, i.e. the general plane of the arrangement 1. Furthermore, in all adjustable positions, the rotation axes 22', 22" of the secondary side first and second roller members 21', 21" are not parallel. Furthermore, in all positions, the rotation axes 22', 22" cross each other.

[0180] The secondary first roller part 21' comprises a cover surface or a peripheral surface forming a secondary first contact surface 24'. Correspondingly, the secondary second roller part 21" comprises a cover surface forming a second secondary contact surface 24". In the present embodiment, the secondary contact surfaces 24', 24" are conical. In the present embodiment, the secondary contact surfaces 24', 24" are formed by secondary roller parts 21', 21" of truncated cone shape, although conical designs are also conceivable, for example.

[0181] from Figure 3 and Figure 7 It can be seen particularly clearly that the current secondary contact surfaces 24', 24" meet each other at point P. The secondary contact surfaces 24', 24" can clamp the workpiece 90 or form a mold or support to reshape the workpiece 90 without contacting each other. There can be a small distance between the secondary contact surfaces 24', 24". In other words, the secondary contact surfaces 24', 24" can basically meet at point P.

[0182] The secondary contact surfaces 24', 24" should be close enough to each other to properly apply force to the workpiece 90 from the secondary side 90b. As is apparent to those skilled in the art, for example, the material properties and thickness of the workpiece 90 may affect the allowable distance between the secondary contact surfaces 24', 24" at point P.

[0183] The design of the secondary side pressurizing device 20 described above causes the first radial support 26' and the second radial support 26" to rotate (like clock hands), which requires the secondary contact surfaces 24', 24" to be able to rotate around point P. Therefore, point P can be stationary or fixed. Point P can be called the center of rotation.

[0184] In other words, when the rotation axis 22', 22" is adjusted to 23', 23", the secondary contact surfaces 24', 24" of the secondary side roller members 21', 21" will also touch or substantially touch each other at the fixed point P. This fact is derived from Figures 4 to 6 It is obvious that Figures 4 to 6 Different positions of the secondary axes of rotation 22 ′, 22 ″ are shown, and said axes 22 ′, 22 ″ are individually adjustable.

[0185] refer to Figure 3, the secondary side first contact surface 24' extends from the axial proximal end 24p' to the axial distal end 24d'. The second secondary contact surface 24" extends from the axial proximal end 24p" to the axial distal end 24d". The axial end closest to the radial support is called the proximal end. Referring to the above discussion about the secondary contact surfaces 24', 24" being basically connected at the fixed point P, the axial proximal ends 24p', 24p" of the secondary side first and second roller components 21', 21" can be adjacent. Therefore, the axial proximal ends 24p', 24p" of the secondary side first and second roller components 21', 21" are connected or basically connected at the fixed point P.

[0186] from Figure 7 It can be clearly seen in FIG. 1 that the secondary contact surfaces 24 ′, 24 ″ of the secondary side roller members 21 ′, 21 ″ and the primary contact surface 14 of the primary side roller member 11 meet or substantially meet each other at a point P. The point P may be referred to as the deformation center.

[0187] When the rotation axes 22', 22" are adjusted, the axial proximal ends 24p', 24p" of the secondary side first and second roller members 21', 21" are also adjacent. Figures 4 to 6 .

[0188] As has been described, since the pressurizing devices 10, 20 apply force to the workpiece 90, the workpiece 90 may be plastically deformed (bent). Figure 7 , the primary contact surface 14 of the primary-side press device 10 can apply force from above, while the secondary contact surfaces 24', 24" of the secondary-side press device 20 simultaneously apply force from below. The force of the primary contact surface 14 affects the workpiece 90 at a position between at least some portions of the force of the secondary contact surfaces 24', 24", so that the workpiece 90 is subjected to a bending moment.

[0189] Figure 3 and Figures 5 to 7 It is shown that the secondary rotation axes 22', 22" are arranged (adjusted) so that the secondary contact surfaces 24', 24" form an angle α that is less than 180 degrees. Therefore, the secondary contact surfaces 24', 24" can form an obtuse angle, thereby allowing the workpiece 90 to bend. After the workpiece 90 is deformed, the bending angle β can be equal to the angle α of the secondary contact surfaces 24', 24".

[0190] The present secondary side pressurizing device 20 allows the rotation axis 22', 22" to be set so that the circumferential contact surfaces 24', 24" form an angle α ( Figure 6 ), such as a right angle or an acute angle (not shown).

[0191] The secondary side pressing device 20 may include a driving device (not shown) for moving the first traveling element 27' relative to the secondary side roller member support 28. When the first traveling element 27' moves, the rotation axis 22' of the secondary side first roller member 21' is adjusted, that is, the direction or orientation of the axis 22' relative to the secondary side roller member support 28 and relative to the rotation axis 22" of the secondary side second roller member 21" is changed.

[0192] The drive device can be implemented, for example, by a motor fixed to the secondary roller member support 28. The motor can include a rotatable gear that meshes with teeth (not shown) on the first travel element 27'. In other embodiments, such a drive device can be omitted and the first travel element 27' can be moved manually.

[0193] An optional motor or separate locking device (not shown) may be used to fix the position of the first travel element 27 ′ relative to the secondary roller member support 28 .

[0194] Similarly, the side pressing device 20 may include a driving device for moving the second traveling element 27 ″ relative to the secondary-side roller member support 28 to adjust the rotation axis 22 ″ of the secondary-side second roller member 21 ″.

[0195] Separate drives may be provided for the first 27 ′ and the second 27 ″ traveling element, so that the respective axes of rotation 22 ′, 22 ″ can be adjusted individually. The axes of rotation 22 ′, 22 ″ may be adjusted by means of a computer control.

[0196] The ratio of the diameter to the width of the secondary roller members 21 ′, 21 ″ of the present embodiment is approximately 2.5. Therefore, the secondary roller members 21 ′, 21 ″ have a radial extension that exceeds the axial extension.

[0197] The secondary roller members 21 ′, 21 ″ of this embodiment are surrounded by an arc path 29 . The radius of the arc path 29 is greater than the diameter of the secondary roller members 21 ′, 21 ″. As shown in the figure, the arc path 29 may extend in the XZ plane.

[0198] The diameter of the secondary side roller parts 21', 21" can be 50 mm to 200 mm in a typical embodiment. In the current example, the diameter of the secondary side roller parts 21', 21" is about 90 mm. This diameter or a diameter of about 50 mm to 200 mm is suitable for reshaping workpieces 90 with a maximum size of about 1 meter, especially metal sheet workpieces.

[0199] In the present embodiment, the secondary side roller parts 21', 21" are in the shape of a truncated cone. The exemplary diameters given above may refer to the average diameters of the secondary side roller parts 21', 21". In more detail, the diameters of the secondary side roller parts 21', 21" at the axial proximal ends 24p', 24p" may be 80 mm to 140 mm, and the diameters of the secondary side roller parts 21', 21" at the axial distal ends 24d' may be 50 to 90 mm.

[0200] Referring to the above arrangement 1 and the description of the primary and secondary side pressurizing devices 10, 20 and Figure 8 Next, a method 100 for reshaping a workpiece 90 will be described. The method 100 may be adapted to the arrangement 1 and press devices 10, 20 described herein, or to other similar devices of similar configuration. Not all features of the arrangement 1 and press devices 10, 20 already described that may be used in the method are repeated.

[0201] The method includes: bringing the primary-side press device 10 into contact with the workpiece 90 at the primary side 90 a of the workpiece 90 110 ; and bringing the secondary-side press device 20 into contact with the workpiece 90 at the secondary side 90 b of the workpiece 90 120 .

[0202] The press devices 10, 20 may be brought into contact with the workpiece by moving one of the press devices 10, 20 or both press devices. In the present example, the primary-side press device 10 moves linearly to contact the workpiece 90. Therefore, the method 100 may include moving the primary-side press device 10 toward the secondary-side press device 20 to clamp the workpiece between the primary-side press device 10 and the secondary-side press device 20.

[0203] The main-side pressing device 10 can be moved by activating the driving device of the top support member 4 .

[0204] The method comprises moving 190 the workpiece 90 and / or the press device 10, 20 relative to each other so as to obtain a mutual linear movement between the workpiece 90 and the press device 10, 20 along the operating direction Y'. Specifically, the method may comprise moving 190 the workpiece 90 relative to the press device 10, 20 so as to obtain a mutual linear movement between the workpiece 90 and the press device 10, 20 along the operating direction Y'. The operating direction Y' may be referred to as the movement direction Y'. The movement 190 may be a translational movement.

[0205] The force exerted on the workpiece 90 by at least one of the pressure devices 10 , 20 causes the workpiece 90 to be plastically deformed 140 in a plane XZ extending substantially transversely to the operating direction Y′.

[0206] The primary side pressurizing device 10 and / or the secondary side pressurizing device 20 can move in the XZ plane. The primary side pressurizing device 10 and / or the secondary side pressurizing device 20 can move only in the XZ plane. In the disclosed example, the primary side pressurizing device 10 moves only in the XZ plane, while the secondary side pressurizing device 20 is fixed in space.

[0207] Typically, the workpiece 90 is moved 190 along a predetermined line 135. As previously described, the workpiece 90 may be scored 130 by the primary side press device 10 along said predetermined line 135 and subsequently deformed (bent). Typically, the workpiece 90 is moved 190 along a non-linear predetermined line 135. While the workpiece 90 is scored 130 by the primary side press device 10 on a first (upper) side, the secondary side press device 20 acts as a support for the opposite (lower) side of the workpiece 90. The subsequent deformation of the transverse non-linear predetermined line 135 may result in the formation of a composite pair of convex and concave surfaces, as described in co-pending Swedish patent application No. 2151044-1.

[0208] In the present example, the workpiece 90 is made of a sheet material. More specifically, the workpiece 90 is made of a metal sheet, such as an aluminum (or "aluminum") sheet, a steel sheet, or a stainless steel sheet. However, the workpiece 90 may be made of a plastic sheet material, such as polypropylene, PVC, polycarbonate, or ABS.

[0209] In the figures, the workpiece 90 is initially a flat sheet, i.e., prior to reshaping. Although all physical objects are actually three-dimensional, it can be said that the method involves reshaping the workpiece 90 from a two-dimensional object to a three-dimensional object. As described herein, the method may involve reshaping in several steps, and thus the method may also involve reshaping a three-dimensional object into a three-dimensional object of a different shape.

[0210] The workpiece 90 may be moved by hand 190. The workpiece 90 may include indications, such as one or more lines, that show the operator how the workpiece 90 is moved through the press 10,20.

[0211] Alternatively, the workpiece 90 may be moved 190 by a robot. The robot may be instructed by a computer device so that the movement is performed along the predetermined line 135. Thus, the method 100 may involve a computer controlled device that controls the movement 190 of the workpiece 90, as well as controlling other features, such as adjusting the rotation axis 22', 22" (angle α) of the secondary side second roller member 21', 21" and the movement of the primary side roller member 11.

[0212] Moving the workpiece 90 relative to the press device 10 , 20 may include applying a force to the workpiece 90 along the operating direction Y′, ie pushing and / or pulling the workpiece 90 along the operating direction Y′. An operator or a robot may push the workpiece through the press device 10 , 20 .

[0213] Moving the workpiece 90 relative to the press device 10 , 20 may include rotating the freely rotating journal roller components 11 , 21 ′, 21 ″ by the movement of the workpiece 90 .

[0214] The method may include repeatedly moving the workpiece 90 back and forth 190 through the press devices 10, 20. Thereby, the workpiece 90 may be reshaped in steps. During the back and forth movement, the workpiece 90 may be plastically deformed 140 stepwise across the operating direction Y' (ie in a plane XZ extending transversely to the operating direction Y').

[0215] As already described, the plastic deformation 140 may involve applying a bending moment across the operating direction Y' (ie in the XZ plane). The pressurizing device 10, 20 may apply a bending moment transverse to the operating direction Y'. Thus, a bending moment may be applied transverse to the operating direction Y' (in the XZ plane).

[0216] As already described, the secondary side pressurizing device 20 may include secondary side first and second pressurizing components 21', 21", which include contact surfaces 24', 24". Using the force applied to the workpiece 90 by at least one of the pressurizing devices 10, 20, plastically deforming the workpiece 90 across the operating direction Y' 140 may include adjusting the angle α between the contact surfaces 24', 24".

[0217] The secondary side first and second squeezing members 21', 21" can be implemented by the secondary side first and second roller members 21', 21" described herein. However, it is conceivable to use a sliding member including a contact surface instead of a rolling member on the primary side or the secondary side. Possibly, in such an embodiment, it is necessary to add a lubricant to reduce friction.

[0218] The deformation 140 of the workpiece may be due to the primary side press device 10 being pressed toward the secondary side press device 20 (in this example, the top support member 4 driving device is pressed toward the secondary side press device 20) so that the workpiece 90 conforms to the angle α between the secondary contact surfaces 24' and 24". The deformation 140 of the workpiece may alternatively or additionally be due to the workpiece 90 being inserted (pushed) between the primary side press device 10 and the secondary side press device 20 so that when the workpiece 90 is pushed in, the workpiece 90 conforms to the angle α between the secondary contact surfaces 24' and 24".

[0219] The angle α between the contact surfaces 24 ′, 24 ″ may be adjusted during operation, ie during mutual linear movement. Alternatively or additionally, the angle α between the contact surfaces 24 ′, 24 ″ may be adjusted during continuous reciprocation of the workpiece 90 between the press devices 10 , 20 .

[0220] The angle α formed by the secondary contact surfaces 24 ′, 24 ″ may be referred to as a support angle α, a die angle α, or anvil angle α.

[0221] As already described, the method 100 may include scoring 130 the workpiece 90 by the main-side press device 10 to obtain a deformation instruction 135 for subsequent plastic deformation 140. Actual experiments have shown that when the workpiece 90 (e.g., made of a flat steel plate material) is scored along a line 135 (e.g., a curve 135), a bending moment subsequently applied transversely to the line causes a bend to be formed along the line 135, and the line 135 is thus used as a deformation instruction. "Bending along the line 135" means that the bending after the plastic deformation 140 is along the line. This scoring can be referred to as curve scoring, and the bending can be referred to as curve bending.

[0222] As already described, method 100 may be performed with workpiece 90 fixed.

[0223] The method 100 may include plastically deforming 140 the workpiece 90 until opposing edges thereof contact each other.

[0224] The method 100 may include attaching 150 the opposing edges of the workpiece 90 to each other, such as by welding. Alternatively, the opposing edges of the workpiece 90 may include attachment means for attaching 150 the opposing edges of the workpiece 90 to each other. Such attachment means may be, for example, one or more dovetail features or similar attachment means for positive fit attachment. The method 100 may include first connecting the opposing edges by attachment means for positive fit attachment and then securing the edges by welding.

[0225] Method 100 may include reshaping workpiece 90 from a flat plate structure to a beam structure, such as Figures 9a to 9c As schematically illustrated.

[0226] exist Figure 9a In the embodiment, a workpiece 90 in the form of a flat plate is provided. Next, the workpiece 90 can be cut into Figure 9b The desired shape is shown.

[0227] Note that before the workpiece 90 is fed to the press device 10, 20 (or arrangement 1), a Figure 9b In this case, an operator or a robot can use the main-side press device 10 to move along the line 135 to generate a deformation instruction on the workpiece 90 . Fig.9c An example of a hollow beam structure is shown, which is a hollow beam structure according to the method 100 Figure 9b The method 100 may include attaching 150 opposing edges of the hollow beam structure to each other by welding.

[0228] As has been described, the present method and apparatus can reshape a flat workpiece into a curved structure (intermediate product shape) and subsequently reshape the curved structure into a final product shape.

[0229] For example, if the intermediate product shape is not formed and then reoriented or repositioned for further re-forming, Fig.9c The hollow beam structure may not be produced. Therefore, it can be Figure 9b The workpiece 90 is bent to a certain extent along the line 135 to form an intermediate product. Next, the press devices 10 and 20 can be separated by about 200 mm and reoriented by rotating the intermediate product (e.g., about the Y axis) by about 180 degrees. Finally, the press devices 10 and 20 can be brought closer to each other again to continue forming (bending) the intermediate product, which is achieved by the main-side press device 10 pressing toward one side wall of the intermediate product (without scratching the side wall), while the secondary-side press device 20 acts as a support.

[0230] A nip may be formed by the contact surfaces 24', 24" of the secondary side pressurizing device 20, and the primary side pressurizing device 10 pushes the intermediate product into the nip to bend the intermediate product. In this case, the contact surfaces 24', 24" of the secondary side pressurizing device 20 substantially act as pliers.

[0231] By activating the driving device of the top support 4 to move the main-side pressing device 10, the pressing devices 10, 20 can be separated from or approached to each other.

[0232] Fig.10a A workpiece 90 is shown in the form of a flat plate. Fig.10b A workpiece 90 cut to a desired shape is shown. Fig.10c A beam structure, more precisely a chair back, is shown, which is a beam structure according to the present method 100 Fig.10b The result of reshaping the cut workpiece. In order to strengthen the chair back, the sections of the workpiece 90 can be attached to each other, for example by welding.

[0233] Typically, the parts of the workpieces 90 that are in contact with each other due to the reshaping may be attached to each other, for example by welding, for example laser welding. The arrangement 1, for example the primary-side pressurizing device 10, may include a laser welding device.

[0234] Fig.11a A workpiece 90 is shown in the form of a flat plate. Fig.11b Schematically illustrating a workpiece 90 cut into a desired shape, Fig.11cThe chassis of a two-wheeled vehicle is shown formed from a cut workpiece 90. To strengthen the chassis, multiple sections of the workpiece 90 may be connected to each other, for example by welding. Without possibly multiple reorientations or repositionings of the intermediate product shape for further reshaping, it may not be possible to produce the product. Fig.11c chassis.

[0235] As can be clearly seen from Figures 9 to 11, the present method and apparatus enable bidirectional reshaping of a plate-like workpiece. Actual tests have shown that when a workpiece 90 (e.g., in the form of a flat steel plate material) is scored along a curve 135 and then bent, the portion of the reshaped structure including the line 135 will bend in two dimensions. Thus, the plate-like workpiece has been reshaped into a bidirectional form.

[0236] Fig.12 A second alternative embodiment of the arrangement 1 described above is shown. Reference numeral 1 is used for the first and second embodiments of the arrangement. Figure 1 Similar to the first embodiment, the second embodiment of arrangement 1 generally extends in a flat XZ plane. During reshaping, the workpiece 90 can be moved along the operating direction Y' ( Figure 1 ) passes through the XZ plane of arrangement 1. In addition, Fig.12 Arrangement 1 extends in the XZ plane significantly more than in any other plane.

[0237] Fig.12 The base structure consists of a beam frame, thus providing Figure 1 In the second embodiment, the base support 3 is not formed by a single column, but by a pair of horizontal beams forming part of the beam frame and a box-shaped support structure accommodating the components 23, 26-28, which hold the secondary side roller parts 21', 21". As shown in the figure, the box-shaped support structure may include a pivotable support table 5 ( Fig.12 Two are shown in the figure), the support table can be erected to provide lateral support for the workpiece 90. As shown in the figure, (multiple) support tables 5 can be provided with transfer balls.

[0238] Fig.12 The top support member 4 driving device extends above the frame support member 2. Fig.12 The top support 4 is configured so that the main side pressure device 10 can be substantially completely in contact with the frame support 2 in the retracted position of the top support 4 drive device. Figure 1 The top support 4 drive device does not extend above the frame support 2. Figure 1 The top support member 4 is of telescopic design.

[0239] exist Fig.12In the embodiment of FIG. 1 , an example of a tool exchange mechanism for the main side press device 10 is shown. The main roller member support 17 includes a plate structure that can be slidably engaged and disengaged with a tool support attached to the top support 4. The tool exchange mechanism facilitates replacement of the main side press device 10 with a device best suited for scoring a particular workpiece, or in some cases, a device for applying force to a workpiece without scoring the workpiece. Figure 2e An example of such a pressurizing device 10 (main-side roller member 11 ) is shown.

[0240] Modifications and other variations of the described embodiments will occur to those skilled in the art having the benefit of the foregoing description and the teachings presented in the associated drawings. Therefore, it should be understood that the embodiments are not limited to the specific example embodiments described in the present invention, and modifications and other variations are intended to be included within the scope of the present disclosure. In addition, although specific terms may be used herein, they are used only in a general and descriptive sense and not for limiting purposes.

[0241] Therefore, those skilled in the art will recognize that many variations of the described embodiments still fall within the scope of the appended claims. For example, the primary side pressurizing device 10 and the secondary side pressurizing device 20 can be interchanged. The arrangement 1 can be rotated 90 degrees or 180 degrees around a horizontal axis (X axis or Y axis).

[0242] As used herein, the terms "comprise" or "comprising" do not exclude the presence of other elements or steps. Furthermore, although individual features may be included in different claims (or embodiments), these features may be advantageously combined together, and the inclusion of different claims (or embodiments) does not mean that a combination of features is not feasible and / or advantageous. Furthermore, singular reference numerals do not exclude the plural. Finally, the reference numerals in the claims are provided merely as a clarifying example and should not be construed as limiting the scope of the claims in any way.

Claims

1. A method (100) of reshaping a workpiece (90), comprising: bringing a main-side pressurizing device (10) into contact (110) with the workpiece (90) at a main side (90a) of the workpiece (90), causing a secondary side pressurizing device (20) to contact (120) the workpiece (90) at the secondary side (90b) of the workpiece (90), moving (190) the workpiece (90) and / or the pressing device (10, 20) relative to each other to obtain a mutual linear movement between the workpiece (90) and the pressing device (10, 20) along an operating direction (Y'), and The workpiece (90) is plastically deformed (140) in a plane (XZ) extending transversely to the operating direction (Y') by means of a force applied to the workpiece (90) by at least one of the pressing devices (10, 20).

2. The method (100) of claim 1, wherein: Moving (190) the workpiece (90) and / or the pressing device (10, 20) relative to each other to obtain a mutual linear movement between the workpiece (90) and the pressing device (10, 20) along an operating direction (Y') involves movement along a predetermined non-straight line (135).

3. The method (100) according to claim 1 or 2, comprising: The workpiece (90) and / or the pressurizing device (10, 20) are moved (190) by a robot controlled by a computer device.

4. The method (100) according to any of the preceding claims, wherein: Moving the workpiece (90) relative to the pressurizing device (10, 20) comprises applying a force to the workpiece (90) along the operating direction (Y') by another device different from the pressurizing device (10, 20).

5. The method (100) according to any of the preceding claims, comprising: The workpiece (90) and / or the pressurizing device (10, 20) are repeatedly moved back and forth (190).

6. The method (100) of claim 5, comprising: During the reciprocating movement, the workpiece (90) is gradually plastically deformed (140) transversely to the operating direction (Y').

7. The method (100) according to any of the preceding claims, wherein: The plastic deformation (140) involves applying a bending moment transverse to the operating direction (Y').

8. The method (100) as claimed in any one of the preceding claims, wherein: The secondary side pressurizing device (20) comprises secondary side first and second pressurizing components (21', 21"), the secondary side first and second pressurizing components comprise secondary contact surfaces (24', 24") which can be adjusted separately, and wherein, utilizing a force applied to the workpiece (90) by at least one of the pressurizing devices (10, 20) to cause the workpiece (90) to plastically deform (140) transversely to the operating direction (Y') comprises: adjusting an angle (α) between the secondary contact surfaces (24', 24") 9. The method (100) of claim 8, wherein: The main-side pressurizing device (10) comprises a main pressurizing component (11), the main pressurizing component comprising a main contact surface (14), and wherein plastic deformation (140) of the workpiece (90) transverse to the operating direction (Y') by using a force applied to the workpiece (90) by at least one of the pressurizing devices (10, 20) comprises: moving the main contact surface (14) toward the secondary contact surface (24', 24").

10. The method (100) according to any of the preceding claims, comprising: The workpiece (90) is scored (130) using the main-side pressurizing device (10) to obtain a deformation instruction (135) for subsequently plastically deforming (140) the workpiece (90).

11. The method (100) as claimed in any one of the preceding claims, wherein: At least one of the pressurizing devices (10, 20) is fixed.

12. The method (100) as claimed in any one of the preceding claims, wherein: The workpiece (90) is plastically deformed (140) transversely to the operating direction (Y') until opposite edges of the workpiece are brought into contact with each other.

13. The method (100) according to any of the preceding claims, comprising: Sections of the workpiece (90), such as opposing edges, are attached (150) to one another, such as by welding.

14. The method (100) as claimed in any one of the preceding claims, comprising: The workpiece (90) is reshaped from a flat plate structure to a bent plate structure, so that the primary side press device (10) and the secondary side press device (20) are out of contact with the workpiece (90), the workpiece (90) is reoriented relative to the primary side press device (10) and the secondary side press device (20) so that the primary side press device (10) and the secondary side press device (20) are in contact with the workpiece (90), and the workpiece (90) is continued to be reshaped by using a force applied to the workpiece (90) by at least one of the press devices (10, 20).

15. The method (100) of claim 14, comprising: Finally, sections of the workpiece (90), such as opposing edges, are attached to one another (150), such as by welding.

16. The method (100) according to any of the preceding claims, comprising: The workpiece (90) is reshaped from a flat plate structure to a beam structure.

17. The method (100) according to any of the preceding claims, comprising: The workpiece (90) is reshaped from a flat plate structure into at least a portion of a two-wheeled vehicle chassis, such as a scooter or motorcycle chassis.

18. A beam structure manufactured by the method according to any one of claims 1 to 16.

19. The beam structure of claim 18, wherein: The beam structure is a seat back.

20. A two-wheeled vehicle chassis, such as a scooter or motorcycle chassis, manufactured by a method according to any one of claims 1 to 16.

21. A main side pressurizing device (10) for reshaping a workpiece (90), the main side pressurizing device (10) being adapted to be arranged on the main side (90a) of the workpiece (90) when the secondary side pressurizing device (20) is arranged on the secondary side (90b) of the workpiece (90), the main side pressurizing device (10) comprising: a main side roller member (11) rotatable about a rotation axis (12) and comprising an axial proximal end (14p), an axial distal end (14d) and a main contact surface (14), wherein the main contact surface (14) is suitable for applying a force from the main side (90a) to the workpiece (90), wherein, in use, the workpiece (90) can be bent at an angle (β) about a tangent line (t) to the primary contact surface (14), and The main-side roller component (11) is configured such that the workpiece (90) can extend to the vicinity of the axial proximal end (14p) or the axial distal end (14d) and pass through the rotation axis (12) after being bent.

22. The main side pressurizing device (10) according to claim 21, wherein: The main-side roller member (11) is configured so that the bending angle (β) can be less than 130 degrees without causing the main-side roller member (11) to block the workpiece (90).

23. The main side pressurizing device (10) according to claim 21 or 22, wherein: The ratio of the diameter to the width of the main side roller component (11) is 3 to 10.

24. The main-side pressurizing device (10) according to any one of claims 21 to 23, wherein: The diameter of the main side roller component (11) is 40 mm to 100 mm.

25. The main-side pressurizing device (10) according to any one of claims 21 to 24, wherein: The main contact surface (14) is arranged at the axial proximal end (14p) or the axial distal end (14d) of the main-side roller member (11).

26. The main-side pressurizing device (10) according to any one of claims 21 to 24, wherein: The main contact surface (14) is arranged axially between the axial proximal end (14p) and the axial distal end (14d) of the main-side roller member (11).

27. The main-side pressurizing device (10) according to any one of claims 21 to 25, wherein: The main side roller component (11) is in the shape of a truncated cone.

28. The main-side pressurizing device (10) according to any one of claims 21 to 27, wherein: The primary contact surface (14) is suitable for scoring a metal workpiece (90).

29. The main-side pressurizing device (10) according to any one of claims 21 to 28, wherein: The primary contact surface (14) includes an acute angle γ to facilitate scribing of a metal workpiece (90).

30. The main-side pressurizing device (10) according to any one of claims 21 to 29, wherein: The primary contact surface (14) is made of a material that is hard enough to score a metal workpiece (90).

31. The main side pressurizing device (10) according to claim 30, wherein: The radially inner section of the main-side roller part (11) is made of another material than the main contact surface (14).

32. A primary side pressing device (10) according to any one of claims 21 to 31, comprising an elongated primary roller member support (17) carrying the primary side roller member (11), wherein: The main roller member support (17) is configured so that the bending angle (β) can be less than 130 degrees without the main roller member support (17) obstructing the workpiece (90).

33. The main side pressing device (10) according to any one of claims 21 to 32, comprising a main roller member support (17) and a main side shaft (15), wherein the main roller member support (17) carries the main side roller member (11) via the main side shaft (15), wherein: The main side shaft (15) is a cantilever shaft.

34. The main-side pressurizing device (10) according to any one of claims 21 to 33, wherein: The main-side roller member (11) is able to rotate freely around the rotation axis (12).

35. The primary side pressurizing device (10) according to any one of claims 21 to 34, comprising a welding device.

36. Use of a main-side pressing device (10) in an arrangement (1) for reshaping (130) a workpiece (90), The workpiece (90) and / or the arrangement (1) are movable relative to each other to obtain a mutual linear movement between the workpiece (90) and the arrangement (1) along an operating direction (Y'), The arrangement (1) comprises a secondary side pressure device (20) adapted to be arranged on a secondary side (90b) of the workpiece (90), the secondary side pressure device (20) comprising two secondary contact surfaces (24', 24") for applying a force to the workpiece (90), in, The main side pressing device (10) is adapted to be arranged on the main side (90a) of the workpiece (90) and comprises a main side roller member (11) rotatable about a rotation axis (12), The main side roller component (11) comprises an axial proximal end (14p), an axial distal end (14d) and a main contact surface (14), wherein the main contact surface (14) is suitable for applying a force from the main side (90a) to the workpiece (90), wherein, in use, the workpiece (90) can be bent at an angle (β) about a tangent line (t) to the primary contact surface (14), and The main-side roller component (11) is configured such that the workpiece (90) can extend to the vicinity of the axial proximal end (14p) or the axial distal end (14d) and pass through the rotation axis (12) after being bent.

37. A secondary side pressurizing device (20) for reshaping a workpiece (90), wherein when a primary side pressurizing device (10) is disposed on a primary side (90a) of the workpiece (90), the secondary side pressurizing device (20) is adapted to be disposed on a secondary side (90b) of the workpiece (90), the secondary side pressurizing device (20) comprising: a secondary first roller member (21') rotatable about a rotation axis (22'), and A secondary side second roller member (21") capable of rotating about a rotation axis (22"), The rotation axes (22', 22") of the secondary side first and second roller components (21', 21") are adjustable (23', 23").

38. The secondary side pressurizing device (20) according to claim 37, wherein: The rotation axes (22', 22") of the secondary side first and second roller members (21', 21") can be adjusted so that the rotation axes (22', 22") of the secondary side first and second roller members (21', 21") are not parallel.

39. The secondary side pressurizing device (20) according to claim 37 or 38, wherein: The rotation axes (22', 22") of the secondary side first and second roller members (21', 21") are not parallel.

40. The secondary side pressurizing device (20) according to any one of claims 37 to 39, wherein: The rotation axes (22', 22") of the secondary-side first and second roller members (21', 21") can be adjusted so that the rotation axes (22', 22") intersect each other.

41. The secondary side pressurizing device (20) according to any one of claims 37 to 40, wherein: The circumferential contact surface (24', 24") of the secondary roller member (21', 21") is conical.

42. The secondary side pressurizing device (20) according to any one of claims 37 to 41, wherein: The secondary side roller parts (21', 21") are in a truncated cone shape.

43. The secondary side pressurizing device (20) according to any one of claims 37 to 42, wherein: The contact surfaces (24', 24") of the secondary roller members (21', 21") meet or substantially meet each other at point (P).

44. The secondary side pressurizing device (20) according to claim 43, wherein: When the rotation axes (22', 22") of the secondary side first and second roller members (21', 21") are adjusted (23', 23"), the contact surfaces (24', 24") of the secondary side roller members (21', 21") also touch or substantially touch each other at the point (P).

45. The secondary side pressurizing device (20) according to claim 43 or 44, wherein: The point (P) is fixed.

46. ​​The secondary side pressurizing device (20) according to any one of claims 37 to 45, wherein: The circumferential contact surface (24') of the secondary first roller component (21') extends from an axial proximal end (24p') to an axial distal end (24d'), The circumferential contact surface (24") of the secondary second roller member (21") extends from an axial proximal end (24p") to an axial distal end (24d"), and The secondary side pressurizing device (20) is configured such that the axial proximal ends (24p', 24p") of the secondary side first and second roller members (21', 21") are adjacent to each other.

47. The secondary side pressurizing device (20) according to claim 46, wherein: When the rotation axis (22', 22") is adjusted, the axial proximal ends (24p', 24p") of the secondary-side first and second roller members (21', 21") are also adjacent.

48. The secondary side pressurizing device (20) according to claim 46 or 47, wherein: The rotation axis (22', 22") may be arranged such that the circumferential contact surfaces (24', 24") form an angle (α) that is less than 180 degrees.

49. The secondary side pressurizing device (20) according to claim 47 or 48, wherein: The rotation axis (22', 22") may be arranged such that the circumferential contact surfaces (24', 24") form an angle (α) that is less than 130 degrees.

50. The secondary side pressing device (20) according to any one of claims 37 to 49, comprising a secondary side first shaft (25'), a first traveling element (27') and a secondary side roller member support (28), wherein: The secondary side first roller member (21') is carried by the secondary side first shaft (25'), and the secondary side first shaft (25') is carried by the first traveling element (27') held in the secondary side roller member support (28) in a movably manner, and the first traveling element (27') is movable along an arc path (29).

51. The secondary side pressurizing device (20) according to claim 50, comprising a secondary side second shaft (25") and a second traveling element (27"), wherein: The secondary side second roller member (21") is carried by the secondary side second shaft (25"), and the secondary side second shaft is carried by the first second traveling element (27") held in the secondary side roller member support (28) in a movably manner, and the second traveling element (27") is capable of moving along an arc path (29).

52. The secondary side pressurizing device (20) according to claim 50 or 51, wherein: At least one of the secondary-side first shaft and / or second shaft (25', 25") is a cantilever shaft.

53. The secondary side pressurizing device (20) according to any one of claims 50 to 52, wherein: The secondary side first shaft and / or second shaft (25', 25") comprises two bearings, and the two bearings rotatably support the secondary side first roller member and / or second roller member (21', 21").

54. The secondary side pressing device (20) according to any one of claims 50 to 53, comprising a drive device for moving the first traveling element (27') and / or the second traveling element (27") relative to the secondary side roller member support (28).

55. The secondary side pressurizing device (20) according to any one of claims 37 to 54, wherein: The ratio of the diameter to the width of the secondary side roller parts (21', 21") is 1.5 to 4.

56. The secondary side pressurizing device (20) according to any one of claims 37 to 55, wherein: The diameter of the secondary side roller member (21', 21") is 50 mm to 200 mm.

57. The secondary side pressurizing device (20) according to any one of claims 37 to 56, wherein: The diameter of the secondary side roller member (21', 21") is 60 mm to 140 mm.

58. The secondary side pressurizing device (20) according to any one of claims 37 to 57, wherein: The diameter of the secondary roller member (21', 21") at the axial proximal end (24p', 24p") is 80 mm to 140 mm, and the diameter of the secondary roller member (21', 21") at the axial distal end (24d') is 50 mm to 80 mm.

59. Use of a secondary pressure device (20) in an arrangement (1) for reshaping (130) a workpiece (90), The workpiece (90) and / or the arrangement (1) are movable relative to each other to obtain a mutual linear movement between the workpiece (90) and the arrangement (1) along an operating direction (Y'), the arrangement (1) comprising: a main side pressurizing device (10), the main side pressurizing device being adapted to be arranged on a main side (90a) of the workpiece (90), the main side pressurizing device (10) comprising a main contact surface (14) for applying a force to the workpiece (90), The secondary side pressurizing device (20) comprises a secondary side first roller component (21') rotatable around a rotation axis (22') and a secondary side second roller component (21") rotatable around a separate rotation axis (22"), and The rotation axes (22', 22") of the secondary side first and second roller components (21', 21") are adjustable (23', 23").

60. An arrangement (1) for reshaping (130) a workpiece (90), The workpiece (90) and / or the arrangement (1) are movable relative to each other to obtain a mutual linear movement between the workpiece (90) and the arrangement (1) along the operating direction (Y'), the arrangement (1) comprising: a main side pressure device (10) adapted to be arranged on a main side (90a) of the workpiece (90), the main side pressure device (10) comprising a main contact surface (14) for applying a force to the workpiece (90), and A secondary side pressurizing device (20) adapted to be arranged on a secondary side (90b) of the workpiece (90), the secondary side pressurizing device (20) comprising two secondary contact surfaces (24', 24") for applying force to the workpiece (90), Wherein, viewed along the operating direction (Y'), the primary contact surface (14) is located between at least some parts of the secondary contact surfaces (24', 24"), so that the workpiece (90) can be deformed (140) transversely to the operating direction (Y').

61. The arrangement (1) of claim 60, wherein: The primary contact surface (14) and the secondary contact surface (24', 24") are located at the same position along the operating direction (Y').

62. The arrangement (1) of claim 60 or 61, wherein: The primary contact surface (14) and the secondary contact surface (24', 24") are arranged in a plane (XZ) orthogonal to the operating direction (Y').

63. An arrangement (1) according to any one of claims 60 to 62, wherein The main contact surface (14) is shaped so that the main contact surface (14) and the flat workpiece (90) portion can engage in a point contact manner.

64. An arrangement (1) according to any one of claims 60 to 63, wherein The main contact surface (14) is annular.

65. An arrangement (1) according to any one of claims 60 to 64, wherein The secondary contact surface (24', 24") is shaped so that the secondary contact surface (24', 24") and the workpiece (90) can be engaged in line contact.

66. An arrangement (1) according to any one of claims 60 to 65, wherein The secondary contact surface (24', 24") is conical.

67. An arrangement (1) according to any one of claims 60 to 66, wherein The secondary side pressing device (20) comprises a secondary side first roller component (21') rotatable about a rotation axis (22') and a secondary side second roller component (21") rotatable about a separate rotation axis (22").

68. The arrangement (1) of claim 67, wherein: The rotation axes (22', 22") of the secondary first and second roller members (21', 21") are adjustable (23', 23").

69. The arrangement (1) of claim 67 or 68, wherein: The secondary side first roller component (21') and the secondary side second roller component (21") are in a truncated cone shape.

70. An arrangement (1) according to any one of claims 67 to 69, wherein The main-side pressing device (10) comprises a main-side roller component (11), wherein the main-side roller component (11) is rotatable about a rotation axis (12) that is not parallel to a rotation axis (22', 22") of the secondary-side roller component (21', 21") 71. The arrangement (1) of claim 70, wherein: The primary-side roller component (11) includes a primary contact surface (14) configured for scoring (130) the workpiece (90).

72. An arrangement (1) according to any one of claims 60 to 71, wherein The primary contact surface (14) is arranged in a movable manner (110), preferably in a linearly movable manner (110), such that the primary contact surface (14) can be moved towards and away from the secondary contact surface (24', 24").

73. The arrangement (1) of claim 72, wherein: The primary contact surface (14) is movable (110) such that the distance between the primary contact surface (14) and the secondary contact surfaces (24', 24") may be at least 100 mm.

74. An arrangement (1) according to any one of claims 60 to 73, comprising a base structure to which the primary side pressurizing device (10) and the secondary side pressurizing device (20) are mounted.

75. The arrangement (1) of claim 74, wherein: The basic structure comprises a frame support (2) for the main-side pressure device (10).

76. The arrangement (1) of claim 75, wherein: The frame support (2) comprises means for moving (110) the main-side pressure device (10).

77. An arrangement (1) according to any one of claims 74 to 76, wherein The basic structure comprises an elongated support member (3) for the secondary side pressure device (20).

78. An arrangement (1) according to any one of claims 74 to 77, wherein The basic structure comprises an elongated support (4) for the primary-side pressure device (10).

79. An arrangement (1) according to any one of claims 74 to 78, wherein The base structure is fixed.

80. An arrangement (1) according to any one of claims 74 to 79, wherein The basic structure extends substantially in a plane (XZ) orthogonal to the operating direction (Y').

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