EP1287918B1 - Method and device for forming a corner limited on three sides from a flat sheet material - Google Patents

Abstract

The procedure for forming a corner section bounded on three sides entails in one of its stages forming the side walls of the component in the transition region and in the corner region(10) over its entire height(206) to bear upon the form faces(36) of the work tool(16) directly adjacent to the corner region to be manufactured. An Independent claim is included for a plant for forming a corner section bounded on three sides on a flat plate component in which the height(212) of the form faces of the tool is the same or greater than the height(206) of the side walls of the component or height(213) of the projection(194) in the corner region.

Description

The invention relates to a method for forming a corner area from a flat plate, in particular sheet metal plate, as described in the preamble of claim 1, and a system for forming a three-sided corner area on a component, as described in the preamble of claim 7 (see e.g. DE-A 40 09 466).

It preferably relates to a system with an adjusting device, adapted to a box-like component, the adjusting device for setting an advanced or retracted position of at least one tool or a roller arrangement for an exact setting of the tool or the roller arrangement in accordance with the thickness of the box-like Has component. This achieves a high degree of accuracy of the dimensions in the corner area of the finished box-like component.

In the case of housings for holding electronic instruments, communication devices, control panels and the like, the housing is produced from a flat plate part or a plate. This type of housing has an opening in the main body and a cover that can be positioned on the opening. The lid is designed to open and close. The lid is made as a box-like component from a plate that is subjected to plate processing.

If such a cover or the like is to be provided on the metal housing, it has to be formed from a plate into a box-shaped component. For this purpose, square recesses are made from a rectangular, plate-like normal metal plate in the four corners. The panel is then folded along the four side edges to form the four side walls. Furthermore, the corresponding end parts of the opposite side walls are welded together to form a corner area. These corner areas are finished using a grinding machine etc.

Known production methods for box-like components require the following work steps: cutting away the material parts of the plate in the four corners thereof; Folding the panel along the four side edges to form the side walls; Welding the respective end portions of the adjacent side walls together to form a corner area and finishing the corner area with a grinder or the like.

The box-like components are therefore provided with these corner regions by a chain of such deformation processes. This causes inconvenience, since such a large number of work steps complicates the manufacture of the corner areas in such a box-shaped component and thereby increases the costs.

From the documents - DE-A 40 09 466 and DE 196 14 517 A - a corner molding machine and a method for the production of box-shaped components are known. In this device for bending and profiling corners, a plate-shaped workpiece is deformed by means of a roller as a bending tool in such a way that a corner of a surface delimited on three sides is formed. To hold the workpiece down on the tool, a hold-down, which is rectangular in shape, is used. The plate-shaped workpiece fixed in this way is then deformed with an hourglass-shaped roller, which serves as a rolling tool. The hold-down device and the tool are offset from one another in the plane receiving the sheet to be formed. This means that the vertical side surfaces of the shaped plate also protrude in their sheet-metal clamping position of the hold-down device, which is to be deformed, over the side surfaces thereof running parallel thereto. With the hold-down device, the corner area was completely covered by the hold-down device, but the material in this area is prevented from being stretched, so that cracks can occur in the corner area, which are unacceptable for aesthetic and safety reasons.

According to the further DE 196 14 517 A, it was provided that the opposite vertical side surfaces of the tool and the hold-down device are offset from each other by a horizontal dimension and, moreover, that of the hold-down device is beveled. The disadvantage here is that the component is not held between the roller causing the deformation of the component and the hold-down device and can move in this direction during the rolling process, so that there may be warps in the area of the flat plate part of a box-like component.

The present invention has for its object to provide a method for producing corners in box-shaped components, which are made of flat panels, which enables the exact manufacture of corner areas for box-like components with different external dimensions and thicknesses with the least possible effort for post-processing as well as to create a system for producing such box-shaped components, with which preformed on flat panels or on the edge area Panel parts of differently designed corner areas can be produced.

This object of the invention is achieved independently by the method according to claim 1 and the system according to claim 7.

The method according to claim 1 advantageously allows the excess to be trimmed without burrs between the end edges of the side walls of the component which form the corner region. Characterized in that the mutually movable cutting elements are arranged in the same plane as the straightening surface, an offset in the two side walls forming the corner area in the vertical direction can be compensated for when cutting the protrusion even with tolerances when producing the side walls by folding.

Advantageous measures also describe claims 2 to 6 to achieve high quality components.

An embodiment of a system according to claim 7 is advantageous since it enables the cutting elements to be connected exactly to the actual course of the side edges and to be adapted to the transition region of the protrusions without manual repositioning being necessary.

The invention is described below with reference to the embodiments shown in the drawings.

Fig. 1

eine Rollenanordnung und ein Werkzeug entsprechend einer möglichen Ausführungsform der vorliegenden Erfindung in Draufsicht, vereinfacht und vergrößert;

Fig. 2

einen wesentlichen Teil der Eckenformeinrichtung in Seitenansicht;

Fig. 3

einen wesentlichen Teil der Eckenformeinrichtung und einen schachtelförmigen Bauteil in Draufsicht;

Fig. 4

ein feststehendes und eine bewegliches Schneideelement in schaubildlicher Darstellung, schematisch und vergrößert;

Fig. 5

eine Abkantmaschine in Stirnansicht;

Fig. 6

die Abkantmaschine nach Fig. 5 in Seitenansicht, geschnitten;

Fig. 7

eine Vorbereitung der Eckbereiche einer Platte in schematischer Darstellung;

Fig. 8

die relative Lage zwischen der Rollenanordnung und dem Werkzeug vor der Herstellung der Eckbereiche in Seitenansicht;

Fig. 9

die relative Lage zwischen der Rollenanordnung und dem Werkzeug während der Herstellung des Eckbereiches in Seitenansicht;

Fig. 10

die relative Lage zwischen der Rollenanordnung und dem Werkzeug nach der Herstellung des Eckbereiches;

Fig. 11

die relative Lage zwischen der Schneidplatte und dem Werkzeug während der Entfernung der Ausschweifung (des Überstandes) im Eckbereich;

Fig. 12

einen wesentlichen Bereich des schachtelartigen Bauteiles, bevor die Eckbereiche des schachtelartigen Bauteils hergestellt sind, in einer vergrößerten, schaubildlichen Darstellung;

Fig. 13

zeigt einen wesentlichen Teil des schachtelartigen Bauteils, nachdem die Eckbereiche des schachtelartigen Bauteiles hergestellt sind, in einer vergrößerten schaubildlichen Darstellung;

Fig. 14

zeigt einen wesentlichen Teil des schachtelartigen Bauteiles, nachdem die Ausschweifungen (Überstände) im Eckbereich weggeschnitten sind, in einer vergrößerten schaubildlichen Darstellung;

Fig. 15

den schachtelförmigen Bauteil mit einem fertiggestellten Eckbereich in perspektivischer Darstellung;

Fig. 16

eine Ausführungsvariante der vorliegenden Erfindung der Rollenanordnung und ein Werkzeug in Draufsicht, in schematischer und vergrößerter Darstellung;

Fig. 17

eine weitere Ausführungsvariante der Rollenanordnung in Stirnansicht und schematischer Darstellung;

Fig. 18

die Rollenanordnung nach Fig. 17 im Schnitt gemäß den Linien 18 - 18 in Fig. 17;

Fig. 19

eine weitere Ausführungsvariante des Werkzeuges in schaubildlicher Darstellung;

Fig. 20

einen wesentlichen Teil einer weiteren Ausführungsform des Werkzeuges in schaubildlicher, vergrößerter Darstellung,

Fig. 21a

einen Nutbereich des Werkzeuges im Schnitt, schematisch;

Fig. 21b

einen Nutbereich des Werkzeuges im Schnitt, schematisch;

Fig. 22

eine weitere Ausbildung einer Eckenformeinrichtung in Ansicht;

Fig. 23

die Eckenformeinrichtung nach Fig. 22 in Draufsicht, teilweise geschnitten;

Fig. 24

eine Detaildarstellung der Eckenformeinrichtung in Draufsicht;

Fig. 25

die Eckenformeinrichtung, geschnitten gemäß den Linien XXV-XXV in Fig. 24;

Fig. 26

eine weitere Ausbildung einer erfindungsgemäßen Schneidevorrichtung, geschnitten gemäß den Linien XXVI-XXVI in Fig. 27;

Fig. 27

die Schneidevorrichtung nach Fig. 26 in Draufsicht, in schematischer Darstellung;

Fig. 28

eine andere Ausführung einer erfindungsgemäßen Schneidevorrichtung in schematischer Darstellung;

Fig. 29

eine weitere Ausführung einer Rollenanordnung mit der Niederhaltevorrichtung die erfindungsgemäße Eckenformeinrichtung, geschnitten.

Show it:

Fig. 1

a roller assembly and a tool according to a possible embodiment of the present invention in plan view, simplified and enlarged;

Fig. 2

an essential part of the corner molding device in side view;

Fig. 3

an essential part of the corner molding device and a box-shaped component in plan view;

Fig. 4

a fixed and a movable cutting element in a diagrammatic representation, schematic and enlarged;

Fig. 5

a folding machine in front view;

Fig. 6

5 in side view, cut;

Fig. 7

a preparation of the corner areas of a plate in a schematic representation;

Fig. 8

the relative position between the roller arrangement and the tool before the production of the corner areas in side view;

Fig. 9

the relative position between the roller assembly and the tool during the manufacture of the corner area in side view;

Fig. 10

the relative position between the roller arrangement and the tool after the corner area has been produced;

Fig. 11

the relative position between the insert and the tool during removal of the excess (excess) in the corner area;

Fig. 12

an essential area of the box-like component, before the corner areas of the box-like component are produced, in an enlarged, diagrammatic representation;

Fig. 13

shows an essential part of the box-like component after the corner regions of the box-like component have been produced, in an enlarged diagrammatic representation;

Fig. 14

shows an essential part of the box-like component, after the excesses (protrusions) have been cut away in the corner area, in an enlarged diagram;

Fig. 15

the box-shaped component with a completed corner area in perspective;

Fig. 16

an embodiment of the present invention of the roller assembly and a tool in plan view, in a schematic and enlarged view;

Fig. 17

a further embodiment of the roller arrangement in front view and schematic representation;

Fig. 18

17 in section along lines 18-18 in FIG. 17;

Fig. 19

a further embodiment of the tool in a diagram;

Fig. 20

an essential part of a further embodiment of the tool in a diagrammatic, enlarged representation,

Fig. 21a

a groove area of the tool in section, schematically;

Fig. 21b

a groove area of the tool in section, schematically;

Fig. 22

a further embodiment of a corner molding device in view;

Fig. 23

22 in plan view, partially sectioned;

Fig. 24

a detailed view of the corner molding device in plan view;

Fig. 25

the corner former cut along lines XXV-XXV in Fig. 24;

Fig. 26

a further embodiment of a cutting device according to the invention, cut according to lines XXVI-XXVI in Fig. 27;

Fig. 27

the cutting device of Figure 26 in plan view, in a schematic representation.

Fig. 28

another embodiment of a cutting device according to the invention in a schematic representation;

Fig. 29

a further embodiment of a roller arrangement with the hold-down device, the corner molding device according to the invention, cut.

In the introduction it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names. The position information selected in the description, such as, for example, top, bottom, side, etc., are based on the figure described and illustrated immediately and are to be transferred accordingly to the new position in the event of a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

1 to 15 show an embodiment of the present invention.

In FIGS. 2 and 3, reference number 2 shows a box-like component; and 4, a corner former.

As shown in Fig. 7, the box-like member 2 is made of a plate S which is deformable by rolling, such as a steel plate, an aluminum plate, a stainless steel plate, a copper plate, or the like. As shown in Fig. 15, is a flat one Plate part 6 of the plate S folded along the four side edges to form four side walls 8. As a result, the plate S is formed into the box-shaped component 2.

2, the corner molding device 4 is equipped with a worktop 14. The worktop 14 is supported in the horizontal direction by a frame 12. The corner molding device 4 is also equipped with an essentially polygonal plate-like tool 16. The tool 16 is fixed on the worktop 14. The tool 16 according to the present embodiment and is equipped with a square plate shape. The tool 16 is fastened with a centering pin 24 on a bearing block 18 of the worktop 14, pins 20 being inserted into the bearing block 18 and intermediate bearings 22 additionally being arranged between them.

Furthermore, an adjusting device 26 is arranged on the worktop 14. The adjustment device 26 defines a position where one of the two, namely the tool 16 or the roller arrangement 42 described below, is mounted. As shown in FIG. 1, the adjusting device 26 comprises the intermediate bearings 22 and manually adjustable threaded spindles 28. The threaded spindles 28 are arranged between the worktop 14 and the intermediate layers 22. The threaded spindles 28 can be rotated manually, creating a advanced or withdrawn distance of the tool 16 can be set (see arrow in Fig. 1).

The tool 16 has a substantially square shape with horizontal top and bottom sides 30, 32 and four side surfaces 34. These four side surfaces 34 are connected to the top and bottom 30, 32.

The tool 16 is formed with a shaped surface 36 for the production of the corner region 10 of a corner of the box-shaped component 2. The molding surface is formed by the top 30 in a corner of the tool 16 and two side surfaces 34 that communicate with this top 30. The tool is also provided with a cutting element 38 for cutting away the excess 66 or a protrusion (see FIG. 13) from the finally shaped end region of the box-shaped component 2. The cutting element 38 is arranged in a region of a corner on an underside 32 of the tool 16, in which the two side surfaces 34 which are connected to the aforementioned underside 32. A drive arrangement 40 for the cutting element 38 moves the cutting element 38 in the region of the underside 22 to the side wall 8 of the box-like component 2 or away from it.

The corner molding device 4 is further provided with an essentially opposite circular cone-like roller arrangement 42. The roller assembly 42 is moved along the two side surfaces 34 that form the molding surface 36 at a corner of the tool 16. The roller arrangement 42 essentially forms a double circular cone function in which a pair of circular cone parts 44 are connected to one another at their tips (vertices). A drive device 46 for the roller arrangement 42 moves it along the two side surfaces 34 which form the molding surface 36.

For this purpose, the roller arrangement 42 is provided with two pressure surfaces 48. When the roller assembly 42 is moved along the two side surfaces 34 which form the molding surface 36, the pressure surfaces 48 deform the excesses 66 or protrusions of the box-shaped component 2 in a corner thereof in such a way that the excesses or the excess 66 in one immediately contact the two side surfaces 34 and form a corner region 10. The pressure surfaces 48 are formed with a circular cone surface which are inclined in opposite directions, but which extend continuously towards one another towards the tip. The roller assembly 42 according to the present embodiment is arranged and designed such that it cannot twist in relation to the two side surfaces 34.

The corner molding device 4 is further provided with a support plate 50. The support plate 50 can be adjusted in height down to the bottom 32 in a corner of the tool 16. As shown in FIGS. 2 to 4, the support plate 50 is provided with an upper and lower side 52, 54 and two inner surfaces 56, which are located opposite the aforementioned side surfaces 34. An adjustment drive 58 for the support plate 50 moves the support plate 50 towards and away from the side surfaces 34 of the tool 16.

The support plate 50 has a cutting edge 60 which is arranged in a region in which the underside 54 merges into the inner surface 56. When the cutting edge 60 is moved in the direction of the side surfaces 34 of the tool 16, the tool 16 and the support plate 50 hold the side wall 8 of the box-like component 2. As a result, the cutting edge 60 cuts the debouch 66 or the protrusion of the fully formed corner region 10 of the box-like component 2 in connection with the cutting element 38 when the drive arrangement 40 for the cutting element 38 moves the cutting element 38 along the underside 32 of the tool 16.

Reference numeral 62 designates a hold-down device which holds the flat plate part 6 of the box-like component 2 from an upper side. The reference numeral 64 denotes a drive mechanism for the hold-down device 62.

The process sequence of the device explained above is now described below.

If the box-shaped component 2 with a corner region 10 is produced using the corner molding device 4, the pre-processing has already been completed, as shown in FIG. 7. In detail, the flat plate part 6 of the square plate-shaped plate S with good rolling deformation properties is folded along the four side edges, so that four side walls 8 are formed. The box-like component 2 has the excess (protrusion) 66, which is made in each corner.

As shown in FIGS. 5 and 6, the above-mentioned pretreatment can be carried out with a press brake 68. The press brake 68 is with a die 72 and a Stamp 74 provided. The die 72 is fixed on a main body 70. The die 74 is moved in the direction of the die 72.

• das Gesenk 72, welches den Nutbereich 76 mit den V-förmigen Querschnitt und den Formbereich 78 im Bereich der beiden Enden aufweist und den Prägestempel 74, der den Vorsprung 80 mit den V-förmigen Querschnitt aufweist. Wie in Fig. 12 dargestellt, formen die Formbereiche 78 des Gesenkes 72 die Ausschweifungen 66 bzw. die Überstände in jedem Eck des schachtelförmigen Bauteils 2, wo die entsprechenden Enden zweier benachbarter Seitenwände aneinanderstoßen.

The die 72 is produced with a V-shaped groove area 76, in which the height “H” corresponds to the height of the side wall 8 of the box-like component 2. The groove region 76 has a shaped region 78 which is provided in the region of both ends, thus in regions which correspond to the corner regions 10 of the box-like component 2. The molding area 78 has a height "h1" that is greater than the height "h". The stamping die 74 is provided with a projection 80 with a V-shaped cross section, which corresponds to the groove region 76. A drive device 82 drives the stamping die for adjustment in the direction of the die 72. As shown in Fig. 7, the press brake 78 enables the flat plate portion 6 of the plate S to be folded along its four side edges to thereby produce four side walls using the following two components:

• the die 72, which has the groove region 76 with the V-shaped cross section and the shaped region 78 in the region of the two ends, and the die 74, which has the projection 80 with the V-shaped cross section. As shown in FIG. 12, the shaped areas 78 of the die 72 form the extrusions 66 or the protrusions in each corner of the box-shaped component 2, where the corresponding ends of two adjacent side walls abut one another.

When the preforming process using the press brake 68 has ended, the threaded spindles 28 of the adjusting device 26 are pivoted manually, a protruding or withdrawn distance of the tool 16 being set, as shown by the arrow in FIG. 1.

As shown in FIG. 8, the side walls 8 of the plate 1 are positioned in a corner thereof against the side surfaces 34 of the tool 16 of the corner molding device 4 in the corner thereof, the side surfaces 34 forming the molding surface 36. The excesses 66 can protrude outward beyond the tool 16, while the hold-down device 62 is adjusted with the drive mechanism 64. As a result of this adjustment, the flat plate part 6 of the plate S is pressed onto the top 30 of the tool 16 and the plate S is fixed on the top 30.

After the corner molding device 4 holds the plate S on the tool 16, as shown in FIG. 9, the drive device 46 moves the roller arrangement 42 in the direction of the arrow (downward in FIG. 9) along the two side surfaces 34 which form the molding surfaces 36, while the pressure surfaces 48 of the roller assembly 42 are held in contact with the side walls 8 of the plate 1. This leads to the excess (protrusion) 66, which protrudes beyond the tool 16, being bent downward and being deformed to such an extent that it is in close contact with the two side surfaces 34.

In the corner molding device 4, by moving the roller arrangement 42 into the position shown in FIG. 10, the corner region 10 is produced on the box-like component 2.

As shown in FIG. 11, the adjustment drive 58 moves the support plate 50 in the direction of the side surfaces 34 of the tool 16, while the tool 16 and the pressure surfaces 48 of the roller arrangement 42 hold the side walls 8 of the box-like component 2 in position. Then the drive arrangement 40 moves the cutting element 38 along the underside 32 of the tool 16. Then the cut edge 60 of the support plate 50 cuts the debonding 66 or the protrusion away from the shaped corner region 10 in cooperation with the cutting element 38.

As can be seen from FIGS. 14 and 15, the box-shaped component 2, which has the mentioned corner regions, is finished after the debonding 66 or the protrusion has been removed.

The adjusting device 26 enables the adjustment of an advanced or retracted distance of the tool 16 and thus enables a corresponding positioning of the tool 16 as a function of the thickness of the box-like component 2 for high accuracy of the dimensions of the corner region 10 of the finished box-like component 2 and high economic efficiency Corner shaping device 4.

In addition, the adjustment drive 58 brings the support plate 50 in the direction of the side surface 34 of the tool 16 when the debonding 66 or the protrusion is removed from the manufactured corner region 10. Then the tool 16 and the pressure surface 48 of the roller arrangement 42 hold the side wall 8 of the box-like Component 2. Furthermore, the drive arrangement 40 moves the cutting element 38 along the underside 32 of the tool 16. The cutting edge 60 cuts the support plate 50 in connection with the cutting element 38 the debauchery 66 or the supernatant.

In comparison with known devices, the corner shaping device 4 for the box-like component 2 enables a simple shaping process and enables the box-like component 2 to be equipped with the corner regions 10. Furthermore, the corner molding device 4 enables the corner regions 10 of the box-like component 2 to be produced with a considerable reduction in costs.

The corner molding device 4 for the box-like component 2 according to the present invention is not bound to the above description, but any adaptations or changes are possible, e.g. the adjusting device 26 corresponding to this embodiment with the manually adjustable threaded spindles 28 for setting an advanced or retracted distance of the tool 16. Alternatively, a motor-driven positioning device 92 can be provided here.

In detail, as shown in FIG. 16, the adjustment drive 58 has a motor arrangement, not shown. A tapered shaft portion 92-1 that can be reciprocated with the motor drive and a transmission link 92-2 for connecting the tapered shaft portion 92-1 to the tool 16. The motor assembly reciprocates the tapered shaft portion 92-1 Movement, this movement then being transmitted to this tool 16 with the transmission members 92-2 to the tool, the setting of a retracted or advanced distance of the tool 16 being achieved. In this way, the motor drive enables an adjustment of the advanced or retracted distance of the tool 16 and a corresponding positioning of the tool 16 depending on the thickness of the box-like component 2 and an exact dimension of the corner region 10 of the finished box-like component 2 and high efficiency of the corner shaping device 4.

Instead of this, a pair of positioning means 94 can also be provided in the area of the roller arrangement 42. Specifically, as shown in Figs. 17 and 18, the positioning means 94 may include a pair of wedge-like means 94-1, a pair of adjustment means 94-3 that slide on respective inclined surfaces 94-2 of the wedge-shaped means 94-1, and a pair of Have motion control parts 94-4 for moving the corresponding adjustment means 94-3.

When the positioning mechanism 94 is activated, the motion control parts 94-4 rotated in a predetermined direction, moving the movable adjuster 94-3 such that the movable adjuster 94-3 slide on the inclined surface 94-2. In this case, the roller assembly 42, which is connected to the movable adjustment means 94-3, can be positioned in relation to the tool.

As a further variant, the positioning means 94 can be provided adjacent to both, namely tool 16 and roller arrangement 42, in order to achieve a higher accuracy depending on the formatting process and the box-like component 2 with corners. This system allows a further improvement of the processability or the degree of processing.

Furthermore, in accordance with the embodiment of the present invention, when the tool 16 is formed, only one type of shaped surface 36 is formed, by the top in a corner of the tool 16 and two side surfaces 34 which communicate with this previous top. Alternatively, it is e.g. As shown in Fig. 19, it is possible to use the square-shaped tool 16 with one to four shaped surfaces 96-1, 96-2, 96-3 and 96-4 in the corners thereof, e.g. the four corners of it. The dimensions of these shaped surfaces differ from one another.

In the above-mentioned tool 16, a centering pin 24 is pulled out from a central area thereof and then the tool 16 is pivoted to a predetermined position of the tool 16 before the tool 16 is fixed again using the pins 20 and the centering pin 24. With this procedure, it is possible to easily change the dimensions in the corner regions 10 of the box-like component 2, with an associated increase in comfort during use.

If a flexible metal material, e.g. Aluminum, used for the box-like component 2, is formed during the downward movement of the deformable metal material, e.g. the gravity-related material shift when the box-like component 2 is formed with the corner regions 10. As shown in FIG. 20, the tool 16 may be provided with a plurality of horizontal groove-shaped areas 98 in each of the corners.

These groove-shaped areas 98 can be made into groove areas 98-1 with a triangular cross section, as shown in FIG. 21a, or groove areas 98-2 with an arcuate cross section, as shown in FIG. 21b. Then when the box-shaped component 2 is produced with the corner regions 10 by the roller arrangement 42, each corner of the box-like component 2 is pressed into the groove-shaped regions 98, as a result of which the gravity-related material shift is prevented accordingly. This embodiment variant avoids all disadvantages with regard to the accuracy of the opening angle in the corner regions 10 of the box-shaped component 2 and also creates advantageous possibilities for forming a box-like component 2 with corner regions 10.

As set forth in the above description of the present invention, the present invention comprises a corner molding device 4 with an adjusting device 26 for adapting to a box-shaped component 2 and a method for forming a triangular boundary from a flat, plate-shaped material, in particular sheet metal, in which the the corner adjacent side edges are bent over a large part of their longitudinal extent parallel to the flat plate part 6 and in the area on the corner to be formed from the bent side edge to the plane of the flat plate part 6 into a curved course, whereupon the preformed cut in the curved Transition area with at least one roller arrangement 42 covering the corner area 10 between the side edges, pressed against a die plate and the corner being formed by material shaping, characterized in that the side edges be pressed in the corner area over their entire height against the circumferential end faces of the die plates. Therefore, the adjustment device 26 enables an adjustment in projecting or recessed distances of at least one tool 16 and a roller arrangement 42, a corresponding positioning of the tool 16 depending on the thickness of the box-shaped component 2 and a high dimensional accuracy of the corner regions 10 of the finished box-shaped component 2 and a high level Economy of the corner molding device 4. In addition, the corner molding device 4 enables a very simple molding process in comparison with the previously known devices matched to the box-like component 2 in accordance with the present invention and enables the box-shaped component 2 to be provided with angular parts. In addition, such a device enables the corner regions 10 to be produced in the box-shaped component 2 with a considerable reduction in costs.

22 and 23, which are described together, show a further embodiment of a system 101 with the corner molding device 4 for the shaping of flat, plate-shaped materials, in particular the component 2, the same reference numerals being used for elements already described above. Such systems 101 are in used specifically for the production of corners on the component 2 delimited on three sides, for example for the production of boxes, lids, doors etc., for example installation cupboards etc., from plate-shaped blanks. A machine frame 104 of the system 101 supported on a contact surface 103 essentially consists of a support frame 105 oriented perpendicularly on the contact surface 103, the plate-shaped work plate 14 running parallel to the contact surface 103, a guide device 107 with a locking device 108 associated therewith, and an openable and if necessary / or lockable safety door 109 forming a safety device with the hold-down device 62 appropriately assigned to it. The suitably plate-shaped worktop 14 which is detachably or for example permanently connected by welding to the support frame 105 is preferably provided on an upper side 111 facing away from the contact surface 103 with an adjusting device 112 and a cutting device 113 equipped. The worktop 14, which is expediently made of steel, has an approximately rectangular plan with a width 114 and a length 115 measured at right angles thereto. The tool 16 assigned to the adjusting device 112 is adjustable relative to the roller arrangement 42. The guide device 107 oriented approximately in the region of half the width 114 perpendicular to the worktop 14 is formed by at least two guide elements 118 spaced apart from one another. The locking device 108, which is adapted by the guide device 107 via a connecting device 119, is formed by two plate-shaped carrier elements 120 spaced apart from one another in the direction of the length 115, with the roller arrangement 42 arranged between them. The roller arrangement 42 is expediently rotatably supported by the bearing elements pressed into the carrier elements 120. The connection of the two carrier elements 120 to a further connecting element creates a compact structural unit which forms the locking device 108 and is held by the connecting device 119. The connecting device 119 is functionally connected via a manually and / or automatically and / or semi-automatically actuated changing device 121. By actuating a quick-locking element 122 formed by the changing device 121, in particular a lever 123 etc., the connecting device 119 arranged between the locking device 108 and the guide device 107 is brought from a holding position into a release position. Of course, the changing device 121 can also be formed by pneumatic and / or hydraulic and / or electrical and / or electropneumatic and / or electrohydraulic elements 122.

A roller 125, which is largely known from the prior art and is rotatable about a central axis 124, is essentially composed of two rollers arranged opposite one another and tapered conical bodies with a rounded and merging transition area are formed. Accordingly, the horizontally aligned roller 125 forms an approximately hourglass-shaped outline shape. The angle of the corner to be formed is determined by the slope of the truncated cone body. The guide elements 118 formed by the guide device 107 and oriented perpendicular to the contact surface 103 are detachably and / or non-detachably connected to the machine frame 104. The guide device 107, which is operatively connected to one and / or more drive device 126, enables the roller arrangement 42 to move relative to at least one tool 116 in the direction of the guide elements 118, thereby making it possible to produce the bent component 102. The drive device 126 is expediently used by a hydraulic cylinder on account of its economical use and its great forces. Of course, all other drive devices 126 known from the prior art, such as for example electric drives, for example spindle drives etc., can be used.

The adjusting device 112 of the corner shaping device 4, which is adjustable and / or positionable and / or fixable relative to the roller 125 via a drive device 126, forms at least one appropriately one-piece plate-shaped, polygonal, in particular a polygonal, link element 127, which is formed by five longitudinal end faces 128 facing away from one another and having the same dimensions and an upper surface 129 and lower surface 130 running at right angles to these are formed. As can also be seen from FIG. 23, at least one, advantageously the longitudinal end face 128 facing the roller 125 is surmounted by the tool 16, which is attached to the top 129 so that it can be detached and / or detached. The longitudinal end faces 128 facing away from the roller 125 in the area of the underside 130 are preferably at least partially surmounted by an extension 131 formed at right angles thereto, the function of which will be discussed in more detail below.

The surface lines 132 formed by the outline shape of the roller 125 and converging towards one another in the direction of the central axis 124 enclose an opening angle 133 between the two surface lines 132 and form a distance 134 which can be adjusted via the adjustment device 112 between the outline shape of the roller 125 and the tool 16. which is to be set as a function of the component to be deformed, in particular its wall thickness. Appropriately, an axis of symmetry 135 formed on the imaginary parting plane of the two truncated cones of the roller 125 runs congruently with an axis of symmetry 136 formed by the adjusting device 112. The two preferably run the same Sheath lines 132 facing longitudinal end faces 128 of the link element 127 approximately parallel to these. The two opposite longitudinal end faces 128, which function as the slide track 137, run at least obliquely to the two opposite generatrices 132, the angle 138 formed by the slide track 137 and the axis of symmetry 136 being dimensioned smaller and / or equal and / or larger than half the opening angle 133 Roller 125. An approximately V-shaped counterplate 139 adjoining the extensions 131 has two legs 140 that widen each other by approximately half the opening angle 133, between which a base 141 connecting the legs 140 extends. The legs 140 form a further slide track 143 on a longitudinal end face 142 facing the surface line 132 and running parallel to the latter. The thickness of the legs 140, which is measured perpendicular to the worktop 14, is greater than the thickness of the base 141, so that the arrangement of an approximately trapezoidal plate 144 forms a flat course of the link element 127, the legs 140 and the plate 144. The plate 144 is preferably locked to the base 141 and between the two legs 140 by a connecting element known from the prior art.

A guide track 145 formed by the extension 131 and the two opposite slide tracks 137 and 143 delimit a longitudinally displaceable sliding block 146 guided by them. The slidable, plate-shaped sliding block 146 has an inclined and parallel to the sliding track 137, a footprint 147 on a longitudinal side surface facing the sliding track 137, whereby the sliding block 146 permits relative adjustment of the tool 16 located on the sliding element 127 according to the double arrows 149 and 150 via a drive arrangement 148 assigned to it. The sliding blocks 146 are assigned at least one length scale 151, which is preferably attached to the top surface of the legs 140 and serves as an indication of the adjustment path according to the double arrows 149 and 150.

The plate 144, which is detachably and / or non-releasably attached to the base 141 and / or to the worktop 14, with a chamber 152 which is recessed in the direction of the axis of symmetry 136, has a threaded spindle 153 in the area of the base surface of the chamber 152 in the direction of the sliding blocks 146 Thread arrangement 154 on. This is, for example, a precision threaded spindle or a preloaded threaded spindle 153 etc., which, due to its high manufacturing accuracy, enables the tool 16 to be adjusted or positioned precisely relative to the roller 125. Of course, cheaper threaded spindles 153 can also be used, for example, whose play compensation by a spring arrangement, not shown, arranged between the sliding block 146 and the plate 144. Due to the accessibility via the chamber 152, the torque required for the adjustment of the sliding blocks 146 can be applied. The possibility of separate infeed of the two sliding blocks 146 enables an asynchronous adjustment of the tool 16 which is oriented perpendicular to the axis of symmetry 135.

It proves to be particularly advantageous that an inclination angle 155 formed by the sliding block 146 results in a transmission ratio that is dependent on the slope, so that even with a small adjustment path of the sliding blocks 146, an adjustment path of the tool 16 that is proportional to the transmission ratio can be set. With this design, the overall size of the drive arrangement 148, the link element 127 and the counter plate 139 is considerably minimized.

Of course, it is possible that only one sliding block 146 is formed, which is also operated mechanically. Another drive arrangement 148, not shown further, can be formed, for example, by a counter-rotating threaded spindle 153 with sliding blocks 146 locked to it and adjustable in opposite directions, which move towards or away from one another in accordance with the drive direction. An advantage of this design is the synchronous drive of the two sliding blocks 146 and thus the uniform infeed in both directions according to the double arrows 149 and 150. In principle, the distance 134 can be adjusted manually and / or automatically and / or semi-automatically by all from the prior art known drive assemblies 148, such as cranks, levers, etc., or electric, hydraulic, pneumatic drives.

Of course, it is also possible to set up a numerical control which, when the tool 117 is adjusted, also detects the control-related relationship of the individual axes and processes the signals accordingly in a control and enables exact positioning, repeatability and the adjustment of the distance 134.

As can also be seen in FIG. 23, the worktop 14, the cutting device 113 is equipped with two plate-shaped cutting elements 157, 158 which are detachably and / or non-releasably connected to a holder 156 and / or the worktop 14. The cutting device 113 is preferably positioned downstream along the axis of symmetry 136 and the adjusting device 106. Of course, the positioning of the cutting device 113 can be anywhere on the worktop 14 and / or also on an external, not shown Device done. A cutting element 157 connected to the holder 156 and / or the worktop 14 expediently runs flat with the upper side 111 of the worktop 14 and the further cutting element 158 is recessed in the direction perpendicular to the axis of symmetry 136. The preferably remotely operable cutting device 113 can be assembled and / or integrated on the worktop 14.

The holder 156 is formed, for example, by a cross member 159 which is longitudinal in a reset of the worktop 14 and which holds the cutting element 154 on the upper side 111. As can also be seen from this embodiment variant, the holder 156 is assigned a drive arrangement 160 which is operatively connected to the cutting element 158 and which enables a relative adjustment of the cutting element 158 in the direction of the cutting element 157. In this case, the drive arrangement 160 is formed, for example, by a hydraulic unit, a cross member 161 receiving the cutting element 158 being guided along two spaced tie rods 162. A cut edge 163 formed by the cutting element 157 projects at least partially in the actuated state from a cut edge 164 formed by the cutting element 158. The plate-shaped cutting element 157 has, on an end face 165 facing the cutting element 158, a triangular recess 166 formed by the two cutting edges 163 tapering toward one another, whose opening angle 167 suitably corresponds to the opening angle 133. The recessed, plate-shaped cutting element 158 opposite the cutting element 157 and equipped with an end face 168 has an apex 169 formed by two cutting edges 164 tapering towards one another, the cutting edges 164 of which run parallel to the cutting edges 163. At the base of the apex 169, a border edge 170, which runs obliquely, preferably perpendicular to the axis of symmetry 136, is formed at the two opposite end regions of the cut edges 164. The component 2 to be processed can be placed on a support surface 171 oriented perpendicular to the boundary edge 170 and facing the cutting element 157. Of course, the cutting device 113 can be formed by a cutting element 157 and a straightening element, the cutting element 157 being provided with the cutting edges 163 and the straightening element only serving as a stop element during the cutting process. The cut edges 163 and 164 formed by the cutting elements 157 and 158 can be formed at least by a part of the end face 165 and 168 of the cutting element 157 and 158 and / or by locked insert elements. The locked insert elements have the great advantage that closing insert elements can be changed easily and quickly at low tool costs.

Advantageously, only one cutting element 158 is designed to be movable, which is adjustable via the drive arrangement 160 relative to the preferably fixedly arranged cutting element 157. The drive arrangement 160 can of course be formed by all drive arrangements known from the prior art, such as, for example, hydraulic, pneumatic, electro-hydraulic cylinder piston arrangements, electrical actuators, etc. Of course, it is also possible for the two cutting elements 157 and 158 to be arranged such that they can be compared with one another and / or for a movable cutting element 157 or 158 to be associated with a fixed cutting element 158 or 157.

24 and 25, the corner molding device 4 is shown in detail. The plate-shaped tool 16 is positioned above the centering bolt 24 on the link element 127, which is adjustable relative to the worktop 14, and is fastened by means of at least one fastening screw 172. The tool 16 forms the shaped surfaces 36. The tool 16 essentially has a square outline, the centering pin 24 being arranged centrally to the shaping surfaces 36 arranged at right angles to one another, as a result of which the tool 16 around the centering pin 24 or about a vertically running pivot axis 173, without changing the relative setting with respect to the link element 127 positions pivoted by 90 degrees each can be used. For this purpose, the tool 16 has at least four receptacles 174 associated with the corner regions for the fastening screws 172. This enables a different design with regard to the rounding or design of the shaped surfaces 36 for corner regions 10 of the box-like component 2 to be shaped differently.

The preformed component 2 is applied to form the corner region 10 with the side walls 8 on the shaped surfaces 36 of the tool 16 and fixed to the tool 16 with the hold-down device 62. The hold-down device 62 consists of a clamping plate 175, which is, for example, fixedly connected to the security door 109 and is adjusted together with it. To achieve sufficient clamping forces, for example, a further clamping element 176, e.g. a pressurized clamping cylinder 177 is provided which exerts a clamping force on the clamping plate 175 in the direction of the tool 16 or the component 2 placed on the tool 16.

If the component 2 is now clamped to the tool 16 to such an extent, the corner region 10 is shaped by adjusting the roller arrangement 42 in the guide elements 118 in the direction of an arrow 178 into the end position of the roller arrangement 42 shown in FIG which the corner region 10 is formed and rests with a protrusion that forms on the shaped surface 36 of the tool 16. Decisive for the exact reshaping of the corner area 10 is an exact adjustment of the distance 134 between the shaped surface 36 and the contour of the surface line 132. The distance 134 must be set to the lower nominal dimension of a thickness 179 of the component 2 in order to achieve an exact corner reshaping.

It is also of crucial importance that a distance 180 between an end edge 181 of the clamping plate 175 facing the roller arrangement 42 and the surface line 132 of the roller arrangement 42 is of the order of a few tenths of a millimeter. This prevents counter-molding of the corner region 10 of the box-like component 2. By setting the distance 134 to the lower nominal dimension of the corner 179 of the component 2, existing tolerance limits are compensated for and an exact right-angled bend is achieved in the corner region 10 of the component 2. A positive tolerance of the thickness 179 brings about a roll forming of the component 2 in the corner region 10 between the molding surface 36 of the tool 16 and the roller arrangement 42.

The adjustment of the distance 134 of the molding surface 36 from the roller arrangement 42 is effected via the adjusting device 112, with which the link element 127 can be adjusted relative to the worktop 14 or to the roller arrangement 42. A reference dimension is formed by a central plane running perpendicular to the worktop 14, along which the roller arrangement 42 is adjusted, and a minimum diameter 182 of the double-conical roller arrangement 42 acting in the corner region 10.

In order to achieve a perfect corner forming, as is shown by way of example in FIG. 25, a spray nozzle 183 assigned to the clamping plate 175 is also provided, which is acted upon with a lubricant and coolant via a line 184 and thus lubricant and coolant, in particular to one, before the forming process Angled surface of the clamping plate 175 is sprayed on from where this lubricating and cooling liquid is transferred to the forming area due to gravity. Since even the smallest amounts are sufficient or excessive amounts are to be avoided at all, the spray nozzle 183, as is not shown further, is acted upon by the lubricating and cooling liquid via a metering device.

26 and 27, the cutting device 113 of the corner shaping device 4 is shown in detail. On the worktop 14, for example via a spacer 185, the fixed cutting element 157 is in one with an underside 186 running parallel to the worktop 14 Distance 187 releasably attached to the worktop 14. The cutting element 157 forms a cutting edge 163 which projects beyond the spacer strip 185 in the direction of the adjustable cutting element 158 and is formed by the underside 186 and an end face 188 running perpendicular to the worktop 14. The distance 187 corresponds approximately to a thickness 189 of the adjustable cutting element 158, which is guided in a linearly adjustable manner on the worktop 14 and is driven by means of the drive arrangement 160, for example a pressurized cylinder, and forms the cutting edge 164 with the end face 168 and an upper side 190.

The cutting element 157 is provided on its end face 188 with a V-shaped cutout 191 facing the cutting element 158 and adapted to the corner region 10 of the component 2 to be cut. The adjustable cutting element 158, on the other hand, has the same shape as the fixed cutting element 157 and with the cutout 191 and the end face surface 168 forms a nose-shaped projection 192. Of course, the cutout 191 is provided with an inner curve which is adapted to the component 2 in the corner region 10 and the projection 192 is provided with a corresponding outer curve.

In order to remove the protrusion 194 which protrudes in the corner region 10 from the end faces 193 of the side walls 8 which protrude in the corner region 10, the opening of the component faces the adjustable cutting element 158, is placed thereon with the end faces 193 and the corner region 10 in the cutout 191 positioned manually. If the cutting element 158 is now adjusted with the drive arrangement 160 in the direction of the fixed cutting element 158, there is an exactly aligned cutting along the end faces 193 of the component 2 in the corner region 10, that is to say the protrusion 194 is removed.

Of course, such a cutting device 113 cannot necessarily be built directly on the system 101, but can form an independent cutting device 113 that is separate from the system 101.

A further embodiment of the cutting device 113 is shown schematically in FIG. 28. In the embodiment shown, the component 2 to be trimmed is placed on a base plate 195 with its opening and the side walls 8 projecting upwards. Compared to the base plate 195, a slide arrangement 197, which can be adjusted at right angles thereto by means of the drive 196, is mounted. This slide assembly 197 has a tool carrier 198, which supports the fixed cutting element 157 and the cutting element 158 adjustable via the drive arrangement 160, the latter being guided on the tool slide 198 in a guide arrangement 199.

If the component 2 for the trimming process is now placed on the base plate 195, the drive 196 of the tool carrier 198 feeds in the direction of an arrow 200 until the adjustable cutting element 158 with a lower side 201 comes to rest on the end faces 193 of the side walls 8. The underside 201 of the adjustable cutting element 158 is aligned with an upper side 202 of the fixed cutting element 157. Once the cutting position has been reached, the adjustable cutting element 158 is moved via the drive arrangement 160 in the direction of an arrow 203 and thus in the direction of the fixed cutting element 157 until the side wall 8 of the component 2 comes into contact with the end face 188 of the fixed cutting element 157. When moving further in the direction of arrow 203, the protrusion 194 formed during the corner shaping is sheared off in exact alignment with the end faces 193 by the interaction of the cutting edges 163, 164 with the cutting elements 157, 158. After the trimming process, the tool carrier 198 becomes by means of the drive 196 adjusted in the opposite direction to the arrow 200 into an open position distant from the base plate 195, whereby the component 2 of the cutting device 113 can be removed.

As can further be seen from FIGS. 26 and 27 relating to the cutting device 113, a course which is exactly flush with the end faces 193 of the side walls 8 is achieved when the protrusion 194 is separated off by the fact that the support elements 205 which form the guide surfaces 204 either on the worktop 14 or independently of this or the system 101 are provided, on which the component is placed with its end faces 193 of the side walls 8 and projects in its corner region 10 with the projection 194 between the cutting elements 157, 158. The arrangement of the cutting elements 157, 158 is designed in such a way that the cutting edge 163 of the cutting element 157 and the cutting edge 164 of the cutting element 158 are arranged to run in the alignment surface 204 formed by the support elements 205. The protrusion 194 projecting over a height 206 of the side walls 8 is thus cut off exactly in alignment in order to achieve the offset-free height 206 of the side walls 8 also in the corner region 10 when the trimming process is carried out, ie by adjusting the adjustable cutting element 158.

As further shown in dashed lines in FIG. 27, there is also the possibility of providing the movable cutting element 158 with support elements 205 formed thereon in the form of projections, as a result of which the component 2 is supported on its side walls 8 in the immediate vicinity of the part to be cut Corner area 10 is given.

23, the roller 125 forming the roller arrangement 42 is rotatably mounted in bearings 207 of a mounting frame 208. A support frame 209 is thus formed, which is adjustable in the guide elements 118 with the drive device 126 in the direction perpendicular to the worktop 14 and forms a guide housing 210. The guide elements 118 thus form a guide device 211 for the guide housing 210. This enables the corner shaping device 4 to be quickly converted for differently shaped rollers 125, the surface line 132 of which is adapted to the corner region 10 of the component 2 to be shaped. The changing device 121 has quick-closing elements 122, e.g. Lever 123 on, so that the exchange can be carried out quickly and without the use of expensive tools.

As can also be seen from FIG. 25, a height 212 of the tool 16 or the circumferential mold surfaces 36 is greater than the height 206 of the side walls 8 of the component 2. In any case, the height 212 of the mold surfaces 36 is a measure of the height 206 of the side walls 8 plus an expected height 213 of the overhang 194 corresponds. This ensures during the reshaping of the corner region 10 that the protrusion 194 after the shaping by the rolling is in any case flat in the region of the shaped surfaces 36 and is in no way drawn in on the underside of the tool 16, which would lead to jamming and the removal of the component 2 would complicate after reshaping the corner area 10.

FIG. 29 shows a further embodiment of the roller arrangement 42 with the hold-down device 62, the same terms and reference numbers being used for components already contained in the previous figures. In the guide device 107 arranged on the machine frame 104, for example two guide rods 220 spaced apart from one another and perpendicular to the worktop 14, a guide carriage 221 is adjustably mounted in the direction perpendicular to the worktop 14. The guide carriage 221 is driven, for example, by a cantilever arm 222 which is arranged in the machine frame 104 or on a countertop 14 opposite the worktop 14 and can be acted on by a pressure medium, for example hydraulic oil, connected to the guide carriage 221 via a piston rod 223 Actuating cylinder 224. Of course, other drives are also conceivable for driving the guide carriage 221, such as, for example, electrically operated spindle drives, etc.

A cassette 226, which is formed by an essentially U-shaped profile 225, is held interchangeably in the guide carriage 221 via the changing device 121. This cassette 226 rotatably supports the roller 125 in side legs 227, 228 about the central axis 124 running parallel to the worktop 14. The side legs 227 , 228 are spaced apart from the worktop 14 with a base leg 229 running parallel thereto, which bears against a head plate 230 of the guide carriage 221 aligned parallel thereto, for transmitting the pressure force applied by the actuating cylinder 224 in the direction of the worktop 14 according to an arrow 231 to the Cassette 226 or roller 124 and a hold-down plate 232 of the hold-down device 62, which is also adjustable in the cassette 226.

The hold-down plate 232 is inserted via guide columns 233 into guide elements 234 arranged in the base leg 229, e.g. Guide bushes 235, adjustable in the direction perpendicular to the worktop 14. The guide columns 233 are arranged between the hold-down plate 232 and the base leg 229, helical compression springs 236 of a spring arrangement 237, wherein a maximum distance 238 from mutually facing surfaces of the base leg 229 and the hold-down plate 232 is achieved by a corresponding stop arrangement between the guide columns 233 and the base leg 229 ,

The hold-down device 62 with the hold-down plate 232 is arranged in the cassette 226 with respect to the roller 125 to such an extent that the front edges 181 of the hold-down plate 232 facing the V-shaped contour of the roller 125 by the distance 180, which is of the order of approx. 1/10 mm moved, set back.

One of the hold-down surfaces 239 of the hold-down plate 232 facing the worktop 14 is arranged on the machine frame 104 or the worktop 14 with the tool 16 which receives the plate part 6 intended for forming in the corner region 10, in particular a mold block 240, which also has its mold surface 96 facing the roller 125 in FIG is adjustable and fixable with respect to the inner contour of the roller 125 facing it, as already described in detail in the previous figures. Furthermore, it is mentioned that the mold block 240 can be pivoted by 90 ° in a plane parallel to the worktop 14 with respect to a positioning pin 241 arranged in the geometric center of the mold block 240 and a corresponding design of the fastening arrangement.

If a preformed plate part 6 is now desired, in which the side walls 8 e.g. are preformed by a folding process, are formed in the corner region 10, then this is placed on the mold block 240, the side walls 8 and the corner region 10 overlapping the mold surfaces 96 of the mold block 240. To carry out the shaping process of the corner region 10, the drive or, for example, the actuating cylinder 224 is acted upon and the cassette 226 with the roller 125 and the holding-down device 62 is moved in the direction of the mold block, as a result of which the plate part 6 is clamped to the mold block 240 by means of the hold-down plate 232. In the further course of movement of the cassette 226 in the direction of the arrow 231, the spring arrangement 237 of the hold-down device 62 is compressed and the contact pressure is increased continuously until the roller 125, which is higher in relation to the hold-down surface 239 in its starting position, carries out the forming process in the corner region 10 of the plate part 6 which the irregularly preformed corner area 10 is pressed against the shaped surfaces 96 of the mold block 240 and thus the right-angled position of the adjacent side faces 8 in the corner area 10 is achieved.

Finally, it should be pointed out that in the exemplary embodiments described above, the individual parts or components or assemblies are shown schematically or in simplified form.

REFERENCE NUMBERS

S

plate

2

component

4

Corner molding device

6

plate part

8th

Side wall

10

corner

12

frame

14

countertop

16

Tool

18

bearing block

20

pen

22

liner

24

centering

26

adjustment

28

screw

30

top

32

bottom

34

side surface

36

form surface

38

cutting element

40

drive arrangement

42

roller assembly

44

conical part

46

driving means

48

print area

50

support plate

52

top

54

bottom

56

Inner surface

58

adjustment

60

cutting edge

62

Hold-down device

64

drive mechanism

66

debauchery

68

press brake

70

main body

72

die

74

dies

76

groove region

78

shape area

80

head Start

82

driving device

92

positioning

92-1

shaft section

92-2

transmission member

94

positioning

94-1

medium

94-2

surface

94-3

adjustment

94-4

Motion control part

96

form surface

96-1

form surface

96-2

form surface

96-3

form surface

96-4

form surface

98

Area

98-1

groove region

98-2

groove region

101

investment

103

footprint

104

machine frame

105

supporting frame

107

guiding device

108

locking device

109

security door

111

top

112

adjustment

113

cutter

114

width

115

length

118

guide elements

119

connecting device

120

support element

121

changing device

122

Quick-acting element

123

lever

124

central axis

125

roller

126

driving means

127

link element

128

Longitudinal faces

129

top

130

bottom

131

extension

132

generating line

133

opening angle

134

distance

135

axis of symmetry

136

axis of symmetry

137

link path

138

angle

139

counterplate

140

leg

141

Base

142

Longitudinal face

143

link path

144

plate

145

guideway

146

sliding block

147

footprint

148

drive arrangement

149

double arrow

150

double arrow

151

Längenmeßstab

152

chamber

153

screw

154

thread arrangement

155

tilt angle

156

bracket

157

cutting element

158

cutting element

159

crossbeam

160

drive arrangement

161

crossbeam

162

tie rod

163

cutting edge

164

cutting edge

165

Front side surface

166

reset

167

opening angle

168

Front side surface

169

vertex

170

boundary edge

171

bearing surface

172

fixing screw

173

swivel axis

174

admission

175

chipboard

176

clamping element

177

clamping cylinder

178

arrow

179

thickness

180

distance

181

front edge

182

diameter

183

spray nozzle

184

management

185

spacer bar

186

bottom

187

distance

188

face

189

thickness

190

top

191

neckline

192

head Start

193

face

194

Got over

195

baseplate

196

drive

197

carriage assembly

198

tool carrier

199

guide assembly

200

arrow

201

bottom

202

top

203

arrow

204

directional surface

205

support element

206

height

207

camp

208

mounting frame

209

supporting frame

210

guide housing

211

guiding device

212

height

213

height

220

guide rods

221

guide carriage

222

cantilever

223

piston rod

224

actuating cylinder

225

profile

226

cassette

227

side leg

228

side leg

229

base leg

230

headstock

231

arrow

232

Hold-down plate

233

guide column

234

guide element

235

guide bush

236

Coil spring

237

spring assembly

238

front edge

239

Hold-down surface

240

mold block

241

positioning

Claims (7)

1. Method of forming a corner (10) from a flat plate, in particular a sheet metal plate, whereby the side edges (8) are bent back forming a transition region bent in three dimensions in the corner region between the side edges, which is formed into the desired shape of the corner by shaping the material so that it has a projecting piece (66) in the corner region, characterised in that the component (2) is placed with the free end faces (193), adjacent to the projecting piece (194), of at least two side walls (8) subtending a corner region (10) on at least one support element (205) constituting a levelling surface (204) and the region of the projecting piece (194) projecting out from the levelling surface (204) in the direction away from the flat plate part (6) is trimmed with cutting elements (38, 157, 158) which can be displaced relative to one another, the cutting edges (163, 164) of which extend in the levelling surface (204).
2. Method as claimed in claim 1, characterised in that the support element (205) remains stationary and the cutting elements (157, 158) are displaceable relative to the support element (205) and perpendicular to the side walls (8) of the component (2) to be produced.
3. Method as claimed in claim 1 or 2, characterised in that support elements (205) for the component (2) are provided on one cutting element (158), preferably on the one of the two which is displaceable.
4. Method as claimed in one of claims 1 to 3, characterised in that a levelling surface (204) extends horizontally.
5. Method as claimed on one of claims 1 to 4, characterised in that the levelling surface (204) extends vertically.
6. Method as claimed in one of claims 1 to 5, characterised in that a rotating cutting element is used, which is displaced parallel with the levelling surface (204) transversely to the projecting piece (194).
7. System for forming a corner region (10) bounded on three sides on a component (2) made from a flat plate, having a tool (16), the corner and edge design of which between a top face and the side faces is adapted to the three-dimensional shape of the corner regions (10) of the component to be produced, having a retaining mechanism (62) for clamping the component (2) between it and the top face of the tool and, lying opposite the corner to be produced on the component, a roller system (42) which, together with a roller (44), is displaceable relative to the workpiece essentially perpendicular to the top face of the workpiece across a height of the side faces, and having a cutting device, preferably with one stationary and one displaceable cutting element (157, 158), characterised in that a support element (205) is disposed adjacent to the tool (16), preferably in its own machine frame (104) separate from the work plate (14), for receiving the tool (16), which has at least one levelling surface (204) for accommodating the free side faces (193), adjacent to the projecting piece (194), of at least two side walls (8) subtending a corner region (10), and cutting elements (157, 158) which are displaceable relative to one another co-operate with the corner region (10) incorporating the projecting piece (194) of the corner region (10) projecting out from the levelling surface (204), the cutting edges (163, 164) of which are disposed in a plane receiving the levelling surface (204).