EP0894032A1 - Device for shaping workpieces - Google Patents
Device for shaping workpiecesInfo
- Publication number
- EP0894032A1 EP0894032A1 EP96933377A EP96933377A EP0894032A1 EP 0894032 A1 EP0894032 A1 EP 0894032A1 EP 96933377 A EP96933377 A EP 96933377A EP 96933377 A EP96933377 A EP 96933377A EP 0894032 A1 EP0894032 A1 EP 0894032A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- workpiece
- workpieces
- shaped
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
Definitions
- the invention relates to a device for deforming workpieces according to the preamble of claim 1.
- the workpieces to be deformed are usually plates, sheets or foils which are arranged between the two tools so that the part to be deformed is not covered by the tools .
- a deformation process e.g. Bending work, performed.
- Devices which carry out deformation work (bending work) on workpieces which are clamped between two worktops.
- the clamping is usually done mechanically, e.g. by means of screw clamps or press jaws, which are arranged to be hydraulically movable relative to one another.
- the shape that is to be achieved by the bending work is usually performed by dies or dies.
- a so-called "free bending” is carried out for the shaping of less complex structures, as are required for profiles or bends. Free bending, however, only allows complex forms to be formed to a certain degree.
- a device for performing such a method is known from DE 40 09 466.
- the method described there offers the possibility of producing a very specific type of corner using a specific sheet after a specific tool setting.
- the presetting of the tools must already be taken into account during the manufacture of the tools, since later modifications which are caused by a different choice of workpiece (workpiece thickness, shelf height, material parameters) cannot be carried out.
- ERSATZBU ⁇ (RULE 26) This patent also discloses a device for bending and profiling corners, a tool for holding down the workpiece being used for fixing workpieces. This hold-down is rectangular in its basic shape so that it completely covers the area of the corner of the workpiece to be deformed. Due to the complete covering of the corner area, however, the material in this area is prevented from being stretched, so that cracks can arise in the corner area which are not acceptable both for aesthetic and safety reasons.
- the object of the invention is to provide a device for deforming workpieces, which enables a modification of the tool geometries with respect to the workpieces to be deformed and a reliable, high-quality corner profile.
- the second tool Since the second tool is equipped with a longitudinal displacement device (hydraulics or pneumatics) and only a displacement in the intended direction is desired, the second tool has a device that allows the second tool to be rotated or displaced in a direction that is not provided shifting device by the longitudinal displacement mechanism, prevented.
- a longitudinal displacement device hydraulics or pneumatics
- the device for deforming workpieces on the second tool has a contour that allows workpieces to be clamped without the workpiece material being damaged, but the underside of the second tool can also be designed to be flat if the workpiece material
- SPARE BLADE (RULE 26) rial is very hard.
- a flat underside is also advantageous if the workpiece to be deformed has a low hardness, since in these cases a plastic coating on the underside prevents damage to the surface.
- Another advantage of the device according to the invention is the surface formed in the vicinity of the mold edge, as a result of which a certain area of the workpiece is released from the clamping force, so that the area not covered can be deformed by the hourglass-shaped roller in accordance with the applied force.
- the device according to the invention has the particular advantage that deformation work, especially corner profiles, can be carried out with high precision and speed.
- Another advantage of the device according to the invention is the possibility of dimension X, which corresponds to the lateral horizontal distance between the two vertical surfaces of the two tools that are closest to the hourglass-shaped roller, according to different material characteristics such as Workpiece thickness, shelf height, grain size, etc. to vary in order to achieve a reliable high deformation quality.
- REPLACEMENT BUTT (RULE 26) larger lateral distance, the area of the sheet to be deformed escapes upwards and causes a curvature that is not desired.
- the rim height ie the length of the area of the workpiece protruding beyond the first tool
- the assessment and adjustment of the lateral distance is decisive for the assessment and adjustment of the lateral distance, since this area of the workpiece is subjected to a high mechanical load during the deformation, which can cause a curvature.
- Table 1 shows an example of an assignment of S (workpiece thickness) and X (distance between mold edge and tool) of the device according to the invention in order to achieve a high deformation quality of workpieces.
- a metallic material such as steel or a steel alloy, is particularly suitable for the design of the hold-down device, but it is also possible to coat the underside of the hold-down device with plastic, which has the advantage that workpieces made of softer materials such as B. aluminum is not accidentally deformed by the plastic coating on its surface, as would be the case with a metal hard surface.
- very hard or tough workpieces to provide the underside of the hold-down with a very hard metallic layer over the entire surface or to harden it as such (e.g. nitriding, laser surface hardening, case hardening, etc.).
- the device is used in bending processes whose processing temperature is below the recrystallization temperature of the workpiece material due to the workpiece characteristics, so that the deformation is a cold deformation.
- Figure 1 is a partially sectioned view of the device with the two tools used for clamping and the deforming tool in the form of a roller.
- FIG. 2 shows a side view of the second tool with an integrated adjustment possibility for the lateral distance X, the holding surface being made of a metallic material;
- FIG. 2a shows a side view of the second tool with an integrated adjustment facility for the lateral distance X, the holding surface being coated with a plastic;
- Fig. 4 is a plan view of the top of the second tool without
- the holding surface being made of a metallic material.
- Fig. 5 is a plan view of the top of the second tool
- the lateral distance can be adjusted, the holding surface being made of a metallic or artificial material.
- REPLACEMENT BUTT (RULE 26) 1 shows a second tool 2 with a contour in the area 5 and a first tool 1 as well as a workpiece 10 arranged above it, the area to be deformed protruding beyond a shaped edge 3a which closes off the side surface 3 at the top.
- Another tool 6 is designed as an hourglass-shaped roller that is moved along the side surface 3 during the bending process, so as to deform the workpiece 10 according to the contour of the shaped edge 3a or the side surface 3.
- the distance X which is decisive for the quality of the deformation, is achieved by an adjustment device (see Fig. 2; 2a) attached to the hold-down device.
- the second tool 2 is accommodated and moved by a cylindrical device 8, preferably of a hydraulic type (a pneumatic device or a device controlled by toothed linkages can also be used). Due to the one-point bearing of the second tool 2, a device is necessary which guides the tool in such a way that only the desired degree of freedom - displacement in one direction - is retained. 1 with a cylinder 7 arranged parallel to the cylinder 8, which runs in a guide 9.
- FIG. 2 shows a schematic cross section through a second tool consisting of two parts, the device for adjusting the distance X being integrated in the tool head of the second tool.
- the adjustability is achieved by means of an elongated hole 13 located in the top of the tool 2 in connection with threaded blind holes 14 arranged underneath, in the actual holding tool 2, in that the screws guided through the elongated hole 13 have a play in the guides 12, that allows to move the lower part of the second tool 2 perpendicular to the screw axes.
- the screws located in the blind holes 14 are loosened and the lower region of the second tool is adjusted according to the values as can be seen in Table 1.
- FIG. 2 shows the basic arrangement of the bearings of the force-applying cylinder 8 and of the twisting and displacement device 9 secured by a thread. The detail provided with K is shown enlarged in FIG. 3.
- FIG. 2a shows the structure, which is identical in principle to that of FIG. 2, with the difference that the underside 5a of the second tool 2 is designed to be flat.
- the underside 5a can be coated by a material such as. B. consist of plastic or metal, a massive formation of the tool from a material is possible, so that the underside as in Fig. 2 consists of the base material of the second tool, but the underside is flat.
- the bottom 5a of the second tool z. B. hardened by nitriding, laser surface hardening or case hardening.
- FIG. 3 shows the detail K according to FIG. 2, the dimension Z being the distance of the second tool 2 from the workpiece surface.
- the distance Z prevents the second tool 2 from penetrating into the surface of the workpiece 10, since the force that is applied to the workpiece also decreases due to the runout of the holding surface 5, so that no traces of embossing remain on the surface of the workpiece 10 .
- this precaution is only necessary if the material hardness of the workpiece is below the material hardness of the tool or if the contact pressure is very high.
- a flat plastic or metal surface can also be used.
- FIG. 4 shows a top view of an exemplary embodiment of the second tool 2, the second tool 2 having no adjusting device.
- the surface area A is largely responsible for the deformation quality, since the size of the surface area A or the corresponding surface 11 of the tool does not cover an area of the workpiece to be deformed and thus it is not exposed to a force. This freedom from stress enables the workpiece to flow in this area in accordance with the force exerted by the third tool and form the desired corner.
- the holding surface 5 shown in dashed lines extends like a frame along the corner to be formed and into the rear region of the second tool 2, a distance being present between its free end sections. However, the two end sections can also be connected to one another.
- FIG. 5 shows a top view of the second tool as in FIG. 4 with the difference that the underside (FIG. 2a) is flat and the tool has an adjusting device 13.
- the adjusting device 13 is realized by an elongated hole with bores in the top of the tool 2, into which set screws (not shown) can engage. Due to the symmetrical arrangement of the elongated hole along the bisector of the corner angle, the two parts forming the tool 2 can be laterally displaced relative to one another in both horizontal directions in order to set the dimension X. The amount to be set is shown in Table 1.
Abstract
A device for shaping plate-like workpieces which can be clamped between a first and a second tool uses an hour-glass shaped roller as bending tool. The second tool has a retaining surface which offsets the opposite vertical side surfaces of the tools relative to each other by a horizontal dimension X which corresponds to maximum five times the thickness of the plate-like workpiece. The second tool with the retaining surface is chamfered to form another vertical surface in the area A in which the plate-like workpiece is shaped into a corner and in which the tool does not cover the workpiece.
Description
Vorrichtung zum Verformen von Werkstücken Device for deforming workpieces
Die Erfindung betrifft eine Vorrichtung zum Verformen von Werkstücken nach dem Oberbegriff des Anspruchs 1. Die zu verformenden Werkstücke sind in der Regel Platten, Bleche oder Folien, die so zwischen die beiden Werkzeuge angeordnet werden, daß der zu verformende Teil nicht von den Werkzeugen bedeckt ist. Mit einem dritten Werkzeug wird nach dem Festle- gen der Werkstücke eine Verformarbeit, z.B. Biegearbeit, durchgeführt.The invention relates to a device for deforming workpieces according to the preamble of claim 1. The workpieces to be deformed are usually plates, sheets or foils which are arranged between the two tools so that the part to be deformed is not covered by the tools . With a third tool, after the workpieces have been fixed, a deformation process, e.g. Bending work, performed.
Bekannt sind Vorrichtungen, die Verformarbeit (Biegearbeit) an Werkstücken durchführen, die zwischen zwei Arbeitsplatten eingespannt sind. Das Ein¬ spannen erfolgt meist auf mechanische Art, z.B. durch Schraubzwingen oder Preßbacken, die hydraulisch gegeneinander verfahrbar angeordnet sind. Die Formgebung, die durch die Biegearbeit geleistet werden soll, wird meist durch Gesenke oder Matrizen geleistet. Ebenso wird für die Formgebung von weniger komplexen Gebilden, wie sie bei Profilen oder Abkantungen gefordert werden, ein sogenanntes "Freibiegen" vorgenommen. Das Freibie- gen erlaubt es jedoch nur bis zu einem gewissen Grad, komplexe Formen zu bilden. Eine Vorrichtung zur Durchführung eines solchen Verfahrens ist aus DE 40 09 466 bekannt. Das dort beschriebene Verfahren bietet die Möglichkeit, nach einer bestimmten Werkzeugeinstellung eine ganz bestimmte Art von Ecken unter Verwendung eines bestimmten Bleches herzustellen. Die Voreinstellung der Werkzeuge muß bereits bei der Fertigung der Werkzeuge berücksichtigt werden, da spätere Modifikationen, die durch andere Werk¬ stückwahl (Werkstückdicke, Bordhöhe, Materialkennwerte) bedingt sind nicht vorgenommen werden können.Devices are known which carry out deformation work (bending work) on workpieces which are clamped between two worktops. The clamping is usually done mechanically, e.g. by means of screw clamps or press jaws, which are arranged to be hydraulically movable relative to one another. The shape that is to be achieved by the bending work is usually performed by dies or dies. Likewise, a so-called "free bending" is carried out for the shaping of less complex structures, as are required for profiles or bends. Free bending, however, only allows complex forms to be formed to a certain degree. A device for performing such a method is known from DE 40 09 466. The method described there offers the possibility of producing a very specific type of corner using a specific sheet after a specific tool setting. The presetting of the tools must already be taken into account during the manufacture of the tools, since later modifications which are caused by a different choice of workpiece (workpiece thickness, shelf height, material parameters) cannot be carried out.
ERSATZBUπ (REGEL 26)
Ferner ist durch dieses Patent eine Vorrichtung zum Biegen und Profilieren von Ecken bekannt, wobei zur Fixierung von Werkstücken ein Werkzeug zum Niederhalten des Werkstücks verwendet wird. Dieser Niederhalter ist in seiner Grundform rechteckig ausgebildet, so daß er den Bereich der zu verformenden Ecke des Werkstück vollständig abdeckt. Durch die vollständi¬ ge Abdeckung des Eckbereichs wird jedoch das Material in diesem Bereich daran gehindert, gestreckt zu werden, so daß Risse in dem Eckbereich entstehen können, die sowohl von ästhetischen als auch aus sicherheitstechni¬ schen Gründen nicht akzeptabel sind.ERSATZBUπ (RULE 26) This patent also discloses a device for bending and profiling corners, a tool for holding down the workpiece being used for fixing workpieces. This hold-down is rectangular in its basic shape so that it completely covers the area of the corner of the workpiece to be deformed. Due to the complete covering of the corner area, however, the material in this area is prevented from being stretched, so that cracks can arise in the corner area which are not acceptable both for aesthetic and safety reasons.
Aufgabe der Erfindung ist es, eine Vorrichtung zur Verformung von Werk¬ stücken zu schaffen, welche eine Modifikation der Werkzeuggeometrien bezüglich der zu verformenden Werkstücke und eine zuverlässige, qualitativ hochwertige Eckprofilierung ermöglicht.The object of the invention is to provide a device for deforming workpieces, which enables a modification of the tool geometries with respect to the workpieces to be deformed and a reliable, high-quality corner profile.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruch 1 gelöst. Zweckmäßige Weiterbildungen der erfindnungsgemäßen Vorrichtung ergeben sich aus den Ansprüchen 2 bis 7.This object is achieved with the features of claim 1. Expedient developments of the device according to the invention result from claims 2 to 7.
Da das zweite Werkzeug mit einer Längsverschiebeeinrichtung (Hydraulik oder Pneumatik) ausgestattet ist und nur eine Verschiebung in der vorgesehe¬ nen Richtung gewünscht ist, weist das zweite Werkzeug eine Einrichtung auf, die ein Verdrehen oder Verschieben des zweiten Werkzeugs in eine Richtung, die nicht der vorgesehenen Verschiebevorrichtung durch den Längsverschiebemechanismus entspricht, verhindert.Since the second tool is equipped with a longitudinal displacement device (hydraulics or pneumatics) and only a displacement in the intended direction is desired, the second tool has a device that allows the second tool to be rotated or displaced in a direction that is not provided shifting device by the longitudinal displacement mechanism, prevented.
Ferner weist die Vorrichtung zum Verformen von Werkstücken an dem zweiten Werkzeug eine Kontur auf, die es erlaubt, Werkstücke einzuspannen, ohne daß das Werkstückmaterial beschädigt wird, jedoch kann die Unterseite des zweiten Werkzeugs auch plan ausgebildet sein, wenn das Werkstückmate-Furthermore, the device for deforming workpieces on the second tool has a contour that allows workpieces to be clamped without the workpiece material being damaged, but the underside of the second tool can also be designed to be flat if the workpiece material
ERSATZBLÄΪT (REGEL 26)
rial sehr hart ist. Eine plane Unterseite ist auch dann von Vorteil, wenn das zu verformende Werkstück eine geringe Härte aufweist, da in diesen Fällen eine Kunstoffbeschichtung der Unterseite ein Beschädigung der Ober¬ fläche verhindert. .SPARE BLADE (RULE 26) rial is very hard. A flat underside is also advantageous if the workpiece to be deformed has a low hardness, since in these cases a plastic coating on the underside prevents damage to the surface. ,
Ein weiterer Vorteil der erfindungsgemäßen Vorrichtung ist die in der Nähe der Formkante ausgebildete Fläche, wodurch ein gewisser Bereich des Werkstücks von der Einspannkraft befreit ist, so daß sich der nicht bedeckte Bereich gemäß der aufgebrachten Kraft durch die sanduhrförmige Rolle verformen läßt. Die erfindungsgemäße Vorrichtung bietet insbesondere den Vorteil, daß Verformungsarbeit, besonders Eckprofilierungen mit hoher Präzision und Geschwindigkeit durchgeführt werden können.Another advantage of the device according to the invention is the surface formed in the vicinity of the mold edge, as a result of which a certain area of the workpiece is released from the clamping force, so that the area not covered can be deformed by the hourglass-shaped roller in accordance with the applied force. The device according to the invention has the particular advantage that deformation work, especially corner profiles, can be carried out with high precision and speed.
Ein weiterer Vorteil der erfindungsgemäßen Vorrichtung besteht in der Möglichkeit, das Maß X, das dem laterale horizontale Abstand zwischen den beiden vertikalen Flächen der beiden Werkzeuge, die der sanduhrförmigen Rolle am nächsten sind, entspricht, gemäß verschiedenen Werkstoffkenn¬ werten wie z.B. Werkstückstärke, Bordhöhe, Korngröße, etc zu variieren, um eine zuverlässige hohe Verformqualität zu erreichen.Another advantage of the device according to the invention is the possibility of dimension X, which corresponds to the lateral horizontal distance between the two vertical surfaces of the two tools that are closest to the hourglass-shaped roller, according to different material characteristics such as Workpiece thickness, shelf height, grain size, etc. to vary in order to achieve a reliable high deformation quality.
Sowohl durch die Aussparung im Eckbereich des zu verformenden Werk¬ stücks, als auch durch die modularen Eigenschaften der beiden als Nie¬ derhalter wirkenden Werkzeuge, ist es möglich, die Werkzeugdimensionen optimal an Werkstückkennwerte anzupassen. Es hat sich als besonders vorteilhaft erwiesen, den lateralen Abstand zwischen Formkante und Halte¬ kante des ersten und zweiten Werkzeugs gezielt einzustellen, sei es durch eine bereits erfolgte Voreinstellung der Werkzeuge oder durch eine Vor¬ richtung, die eine Einstellung auch während des Produktionsprozesses erlaubt, da er die Qualität der Verformung beeinflußt. Dieser laterale Abstand sollte kleiner oder gleich dem fünffachen der Werkstückstärke sein, da bei einemBoth through the cut-out in the corner area of the workpiece to be deformed and through the modular properties of the two tools acting as holding-down devices, it is possible to optimally adapt the tool dimensions to workpiece characteristics. It has proven to be particularly advantageous to set the lateral distance between the form edge and the holding edge of the first and second tools in a targeted manner, be it by pre-setting the tools or by means of a device that allows adjustment even during the production process. because it affects the quality of the deformation. This lateral distance should be less than or equal to five times the workpiece thickness, because with one
ERSATZBUTT (REGEL 26)
größeren lateralen Abstand der zu verformende Bereich des Bleches nach oben ausweicht und eine Wölbung verursacht, die nicht erwünscht ist. Ebenso ist die Bordhöhe (d.h. die Länge des über das erste Werkzeug hinausragenden Bereichs des Werkstücks) entscheidend für die Beurteilung und Abstimmung des lateralen Abstands, da dieser Bereich des Werkstücks während der Verformung eine hohe mechanische Belastung erfährt, die eine Wölbung hervorrufen kann.REPLACEMENT BUTT (RULE 26) larger lateral distance, the area of the sheet to be deformed escapes upwards and causes a curvature that is not desired. Likewise, the rim height (ie the length of the area of the workpiece protruding beyond the first tool) is decisive for the assessment and adjustment of the lateral distance, since this area of the workpiece is subjected to a high mechanical load during the deformation, which can cause a curvature.
Tab. 1Tab. 1
Tabelle 1 zeigt ein Beispiel für eine Zuordnung von S (Werkstückstärke) und X (Abstand zwischen Formkante und Werkzeug) der erfindungsgemäßen Vorrichtung um eine hohe Verformqualität von Werkstücken zu erreichen.Table 1 shows an example of an assignment of S (workpiece thickness) and X (distance between mold edge and tool) of the device according to the invention in order to achieve a high deformation quality of workpieces.
Besonders geeignet ist für die Ausführung des Niederhalters ein metallischer Werkstoff, wie z.B. Stahl oder eine Stahllegierung, es ist aber auch mög¬ lich, die Unterseite des Niederhalters mit Kunststoff zu beschichten, was den Vorteil hat, daß Werkstücke, die aus weicheren Werkstoffen bestehen, wie wie z. B. Aluminium durch die Kunststoffbeschichtung an ihrer Oberfläche nicht ungewollt verformt werden, wie dies bei einer metallenen harten Oberfläche der Fall wäre. Es ist aber auch möglich bei sehr harten oder zähen Werkstücken die Unterseite des Niederhalters auf der ganzen Fläche mit einer sehr harten metallen Schicht zu versehen oder als solche geeignet zu härten (z.B. Nitrieren, Laseroberflächenhärten, Einsatzhärten, etc.).
Die Vorrichtung wird bei Biegeverfahren eingesetzt, deren Bearbeitungs¬ temperatur aufgrund der Werkstückkennwerte unterhalb der Rekristallisation¬ stemperatur Werkstückmaterials liegen, so daß die Verformung eine Kaltver¬ formen ist. Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand von Zeichnungen näher erläutert. Es zeigen:A metallic material, such as steel or a steel alloy, is particularly suitable for the design of the hold-down device, but it is also possible to coat the underside of the hold-down device with plastic, which has the advantage that workpieces made of softer materials such as B. aluminum is not accidentally deformed by the plastic coating on its surface, as would be the case with a metal hard surface. However, it is also possible for very hard or tough workpieces to provide the underside of the hold-down with a very hard metallic layer over the entire surface or to harden it as such (e.g. nitriding, laser surface hardening, case hardening, etc.). The device is used in bending processes whose processing temperature is below the recrystallization temperature of the workpiece material due to the workpiece characteristics, so that the deformation is a cold deformation. An exemplary embodiment of the invention is explained in more detail below with reference to drawings. Show it:
Fig. 1 eine teilweise geschnittene Ansicht der Vorrichtung mit den beiden zum Einspannen eingesetzten Werkzeuge und des in Form einer Rolle ausgebildeten verformenden Werkzeugs;Figure 1 is a partially sectioned view of the device with the two tools used for clamping and the deforming tool in the form of a roller.
Fig. 2 eine Seitenansicht des zweiten Werkzeugs mit integrierter Ver¬ stellmöglichkeit für den lateralen Abstand X, wobei die Halte¬ fläche aus einem metallischen Werkstoff besteht;2 shows a side view of the second tool with an integrated adjustment possibility for the lateral distance X, the holding surface being made of a metallic material;
Fig. 2a eine Seitenansicht des zweiten Werkzeugs mit integierter Ver¬ stellmöglichkeit für den lateralen Abstand X, wobei die Halte¬ fläche mit einem Kunststoff beschichtet ist;2a shows a side view of the second tool with an integrated adjustment facility for the lateral distance X, the holding surface being coated with a plastic;
Fig. 3 einen vergrößerten Ausschnitt K des zweiten Werkzeugs aus3 shows an enlarged section K of the second tool
Fig. 2;Fig. 2;
Fig. 4 eine Draufsicht auf die Oberseite des zweiten Werkzeugs ohneFig. 4 is a plan view of the top of the second tool without
Verstellmöglichkeit des lateralen Abstandes, wobei die Halteflä- ehe aus einem metallischen Werkstoff besteht.Lateral distance can be adjusted, the holding surface being made of a metallic material.
Fig. 5 eine Draufsicht auf die Oberseite des zweiten Werkzeugs mitFig. 5 is a plan view of the top of the second tool
Verstellmöglichkeit des lateralen Abstandes, wobei die Halteflä¬ che aus einem metallischen oder künstlichen Werkstoff besteht.The lateral distance can be adjusted, the holding surface being made of a metallic or artificial material.
ERSATZBUTT (REGEL 26)
Fig. 1 zeigt ein zweites Werkzeug 2 mit einer Kontur im Bereich 5 und ein erstes Werkzeug 1 sowie ein darüber angeordnetes Werkstück 10, dessen zu verformender Bereich über eine Formkante 3a, die die Seitenfläche 3 nach oben hin abschließt, herausragt. Ein weiteres Werkzeug 6 ist als sanduhrförmige Rolle ausgebildet, die während des Biegevorgangs entlang der Seitenfläche 3 bewegt wird, um so das Werkstück 10 gemäß der Kontur des Formkante 3a bzw. der Seitenfläche 3 zu verformen. Der für die Qualität der Verfromung maßgebliche Abstand X wird durch eine am Niederhalter angebrachte VerStelleinrichtung (siehe Fig. 2; 2a) erreicht. Die Aufnahme und Verfahrbarkeit des zweiten Werkzeugs 2 wird durch eine zylindrische Vorrichtung 8 vorzugsweise hydraulischer Art (ebenso ist auch eine pneu¬ matische oder eine durch Zahngestänge gesteuerte Vorrichtung einsetzbar) realisiert. Aufgrund der Ein-Punktlagerung des zweiten Werkzeugs 2 ist eine Einrichtung notwendig, die das Werkzeug so führt, daß nur der eine ge- wünschte Freiheitsgrad - Verschiebung in eine Richtung - erhalten bleibt. Dies wird nach Fig. 1 mit einem, parallel zum Zylinder 8 angeordneten Zylinder 7 erreicht, der in einer Führung 9 läuft.REPLACEMENT BUTT (RULE 26) 1 shows a second tool 2 with a contour in the area 5 and a first tool 1 as well as a workpiece 10 arranged above it, the area to be deformed protruding beyond a shaped edge 3a which closes off the side surface 3 at the top. Another tool 6 is designed as an hourglass-shaped roller that is moved along the side surface 3 during the bending process, so as to deform the workpiece 10 according to the contour of the shaped edge 3a or the side surface 3. The distance X, which is decisive for the quality of the deformation, is achieved by an adjustment device (see Fig. 2; 2a) attached to the hold-down device. The second tool 2 is accommodated and moved by a cylindrical device 8, preferably of a hydraulic type (a pneumatic device or a device controlled by toothed linkages can also be used). Due to the one-point bearing of the second tool 2, a device is necessary which guides the tool in such a way that only the desired degree of freedom - displacement in one direction - is retained. 1 with a cylinder 7 arranged parallel to the cylinder 8, which runs in a guide 9.
Fig. 2 zeigt einen schematischen Querschnitt durch ein aus zwei Teilen bestehendes zweites Werkzeug, wobei die Einrichtung zum Verstellen des Abstandes X in dem Werkzeugkopf des zweiten Werkzeugs integriert ist. Die Verstellbarkeit wird durch eine in der Oberseite des Werkzeugs 2 befindlichen Langlochbohrung 13 in Verbindung mit darunter, im eigentlich haltenden Werkzeug 2, angeordneten, mit Gewinde versehenen Sacklöchern 14 realisiert, indem die durch die Langlochbohrung 13 geführten Schrauben in den Führungen 12 ein Spiel aufweisen, das es erlaubt, den unteren Teil des zweiten Werkzeugs 2 senkrecht zu den Schraubenachsen zu verschieben. Zum Einstellen des Abstandes X werden die in den Sacklöchern 14 befind¬ lichen Schrauben gelöst und der untere Bereich des zweiten Werkzeugs nach den Werten verstellt, wie sie der Tabelle 1 zu entnehmen sind. Durch dieFIG. 2 shows a schematic cross section through a second tool consisting of two parts, the device for adjusting the distance X being integrated in the tool head of the second tool. The adjustability is achieved by means of an elongated hole 13 located in the top of the tool 2 in connection with threaded blind holes 14 arranged underneath, in the actual holding tool 2, in that the screws guided through the elongated hole 13 have a play in the guides 12, that allows to move the lower part of the second tool 2 perpendicular to the screw axes. To set the distance X, the screws located in the blind holes 14 are loosened and the lower region of the second tool is adjusted according to the values as can be seen in Table 1. Through the
ERSATZBUTT (REGEL 26)
in 45° gegenüber der Seitenkante 3 angeordnete Langlochsymmetrielinie wird eine gleichzeitige identische Ausrichtung in beiden Horizontalrichtungen erreicht (Siehe Fig. 5). Bei Eckwinkeln, die nicht 90° betragen, verändert sich die winklige Ausrichtung gemäß der Winkelhalbierenden des Eckwinkels entsprechend (110° zu 55°; 120° zu 60° etc.). Ferner zeigt Fig. 2 die prinzipielle Anordnung der Lager des kraftaufbringenden Zylinders 8 und der durch ein Gewinde gesicherten Verdreh- und Verschiebeeinrichtung 9. Das mit K versehene Detail ist vergrößert in Fig. 3 gezeigt.REPLACEMENT BUTT (RULE 26) in an elongated hole symmetry line arranged at 45 ° with respect to the side edge 3, a simultaneous identical alignment is achieved in both horizontal directions (see FIG. 5). For corner angles that are not 90 °, the angular orientation changes accordingly according to the bisector of the corner angle (110 ° to 55 °; 120 ° to 60 ° etc.). Furthermore, FIG. 2 shows the basic arrangement of the bearings of the force-applying cylinder 8 and of the twisting and displacement device 9 secured by a thread. The detail provided with K is shown enlarged in FIG. 3.
Fig. 2a zeigt den prinzipiell identischen Aufbau wie Fig. 2 mit dem Unter¬ schied, daß die Unterseite 5a des zweiten Werkzeugs 2 plan ausgebildet ist. Die Unterseite 5a kann durch eine Beschichtung aus einem Werkstoff wie z. B. Kunstoff oder Metall bestehen, ebenso ist eine massive Ausbildung des Werkzeugs aus einem Werkstoff möglich, so daß die Unterseite wie bei Fig. 2 aus dem Grundwerkstoff des zweiten Werkzeugs besteht, jedoch die Unterseite plan ist. Dabei kann die Unterseite 5a des zweiten Werkzeuges z. B. durch Nitrieren, Laseroberflächenhärten oder Einsatzhärten gehärtet sein.FIG. 2a shows the structure, which is identical in principle to that of FIG. 2, with the difference that the underside 5a of the second tool 2 is designed to be flat. The underside 5a can be coated by a material such as. B. consist of plastic or metal, a massive formation of the tool from a material is possible, so that the underside as in Fig. 2 consists of the base material of the second tool, but the underside is flat. The bottom 5a of the second tool z. B. hardened by nitriding, laser surface hardening or case hardening.
Fig. 3 zeigt das Detail K nach Fig. 2, wobei das Maß Z der Abstand des zweiten Werkzeugs 2 von der Werkstückoberfläche ist. Durch den Abstand Z wird ein Eindringen des zweiten Werkzeugs 2 in die Oberfläche des Werkstücks 10 verhindert, indem durch das Auslaufen der Haltefläche 5 die Kraft, die auf das Werstück aufgebracht wird, ebenfalls abnimmt, so daß keine Prägespuren auf der Oberfläche des Werkstücks 10 zurückbleiben. Allerdings ist diese Vorkehrung nur notwendig, wenn die Werkstoffhärte des Werkstücks unterhalb der Werkstoffhärte des Werkzeugs liegt, bzw. die Anpresskraft sehr groß ist. Anstatt der Kontur kann, wie bereits beschrie¬ ben, auch eine plane Kunstoff- oder Metalloberfläche verwendet werden.FIG. 3 shows the detail K according to FIG. 2, the dimension Z being the distance of the second tool 2 from the workpiece surface. The distance Z prevents the second tool 2 from penetrating into the surface of the workpiece 10, since the force that is applied to the workpiece also decreases due to the runout of the holding surface 5, so that no traces of embossing remain on the surface of the workpiece 10 . However, this precaution is only necessary if the material hardness of the workpiece is below the material hardness of the tool or if the contact pressure is very high. As already described, instead of the contour, a flat plastic or metal surface can also be used.
ERSATZBUTT (REGEL 26)
Fig. 4 zeigt die Draufsicht auf ein Ausführungsbeispiel des zweiten Werk¬ zeugs 2, wobei das zweite Werkzeug 2 keine Versteileinrichtung aufweist. Dabei ist der Flächenbereich A für die Verformqualität maßgeblich ver¬ antwortlich, da durch die Größe des Flächenbereiches A bzw. der korre- spondierenden Fläche 11 des Werkzeugs ein Bereich des zu verformenden Werkstücks nicht bedeckt und somit nicht einer Kraft ausgesetzt ist. Durch diese Belastungsfreiheit kann das Werkstück in diesem Bereich gemäß der durch das dritte Werkzeug aufgebrachten Kraft fließen und die gewünschte Ecke ausbilden. Ferner erstreckt sich die gestrichelt gezeigte Haltefläche 5 rahmenartig entlang der zu ver formenden Ecke und in den Rückbereich des zweiten Werkzeugs 2, wobei zwischen ihren freien Endabschnitten ein Abstand vorhanden ist. Die beiden Endabschnitte können aber auch mitein¬ ander verbunden sein.REPLACEMENT BUTT (RULE 26) FIG. 4 shows a top view of an exemplary embodiment of the second tool 2, the second tool 2 having no adjusting device. The surface area A is largely responsible for the deformation quality, since the size of the surface area A or the corresponding surface 11 of the tool does not cover an area of the workpiece to be deformed and thus it is not exposed to a force. This freedom from stress enables the workpiece to flow in this area in accordance with the force exerted by the third tool and form the desired corner. Furthermore, the holding surface 5 shown in dashed lines extends like a frame along the corner to be formed and into the rear region of the second tool 2, a distance being present between its free end sections. However, the two end sections can also be connected to one another.
Fig. 5 zeigt eine Draufsicht auf das zweite Werkzeug wie in Fig. 4 mit dem Unterschied, daß die Unterseite (Fig. 2a) plan ausgebildet ist und das Werkzeug eine VerStelleinrichtung 13 aufweist. Die Versteileinrichtung 13 ist wie in Fig. 2 gezeigt durch ein an der Oberseite des Werkzeugs 2 ange¬ brachtes Langloch mit Bohrungen realisiert, in welche (nicht gezeigte) Stellschrauben eingreifen können. Durch die symmetrische Anordnung des Langloches entlang der Winkelhalbierenden des Eckwinkels ist eine laterale Verschiebbarkeit der beiden das Werkzeug 2 bildenden Teile gegeneinander in beide horizontalen Richtungen zu gleichen Beträgen möglich, um das Maß X einzustellen. Der einzustellende Betrag ist der Tabelle 1 entnehmbar.FIG. 5 shows a top view of the second tool as in FIG. 4 with the difference that the underside (FIG. 2a) is flat and the tool has an adjusting device 13. As shown in FIG. 2, the adjusting device 13 is realized by an elongated hole with bores in the top of the tool 2, into which set screws (not shown) can engage. Due to the symmetrical arrangement of the elongated hole along the bisector of the corner angle, the two parts forming the tool 2 can be laterally displaced relative to one another in both horizontal directions in order to set the dimension X. The amount to be set is shown in Table 1.
ERSATZBUπ (REGEL 26)
ERSATZBUπ (RULE 26)
Claims
1. Vorrichtung zum Verformen von plattenförmigen Werkstücken (10) unter Verwendung einer sanduhr-förmigen Rolle (6) als Biegewerkzeug, die jeweils zwischen einem ersten und zweiten Werkzeug (1 ; 2) einspannbar sind, wobei das zweite Werkzeug (2) eine Niederhaltefläche (5 bzw. 5a) aufweist,1. Device for deforming plate-shaped workpieces (10) using an hourglass-shaped roller (6) as a bending tool, which can each be clamped between a first and second tool (1; 2), the second tool (2) having a hold-down surface ( 5 or 5a),
d a d u r c h g e k e n n z e i c h n e tcharacterized
daß die ubereinanderliegenden vertikalen Seitenflächen (3, 4) der Werk¬ zeuge um ein horizontales Maß X gegeneinander versetzt sind, das maximal der fünffachen Dicke des plattenförmigen Werkstücks (10) ent¬ spricht; undthat the superimposed vertical side surfaces (3, 4) of the tools are offset from one another by a horizontal dimension X which corresponds to a maximum of five times the thickness of the plate-shaped workpiece (10); and
daß das die Niederhaltefläche (5 bzw. 5a ) aufweisende zweite Werk¬ zeug (2) unter Ausbildung einer weiteren vertikalen Fläche (11) in dem Bereich A abgeschrägt ist, in welchem das plattenförmige Werkstückthat the holding-down surface (5 or 5a) having the second tool (2) is chamfered to form a further vertical surface (11) in area A in which the plate-shaped workpiece
(10) zu einer Ecke zu verformen ist, und in welchem das Werkzeug (2) das Werkstück (10) nicht bedeckt.(10) is to be deformed into a corner, and in which the tool (2) does not cover the workpiece (10).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß das Maß X als Abstand zwischen Formkante (3a) und vertikale Fläche (4) in Ab¬ hängigkeit von Werkstückstärke und Bordhöhe des Werkstücks (10) einstellbar ist.2. Device according to claim 1, characterized in that the dimension X is adjustable as a distance between the shaped edge (3a) and the vertical surface (4) in dependence on the workpiece thickness and the board height of the workpiece (10).
ERSATZBUTT (REGEL 26) REPLACEMENT BUTT (RULE 26)
3. Vorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeich¬ net, daß die Werkstücke (10) metallene Platten, Bleche oder Folien sind.3. Device according to one of claims 1 to 2, characterized gekennzeich¬ net that the workpieces (10) are metal plates, sheets or foils.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeich¬ net, daß die Haltefläche (5a) des zweiten Werkzeugs (2) eine Kunst- stoffbeschichtung aufweist oder aus einem metallenen Werkstoff besteht und eben ist.4. Device according to one of claims 1 to 3, characterized gekennzeich¬ net that the holding surface (5a) of the second tool (2) has a plastic coating or consists of a metallic material and is flat.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Kunst- stoffbeschichtung aus Polyethylen besteht.5. The device according to claim 4, characterized in that the plastic coating consists of polyethylene.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeich¬ net, daß der Endbereich der Haltefläche (5) derart abgeschrägt ist, daß ihr freier Rand vom Werkstück einen geringen Abstand Z aufweist.6. Device according to one of claims 1 to 5, characterized gekennzeich¬ net that the end region of the holding surface (5) is chamfered such that its free edge from the workpiece has a small distance Z.
7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das zweite Werkzeug (2) ausschließlich vertikal verschiebbar ist.7. The device according to claim 1, characterized in that the second tool (2) is only vertically displaceable.
ERSATZBUH (REGEL 26) REPLACEMENT BOOK (RULE 26)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19614517 | 1996-04-12 | ||
| DE19614517A DE19614517A1 (en) | 1996-04-12 | 1996-04-12 | Device for deforming workpieces |
| PCT/EP1996/004176 WO1997038806A1 (en) | 1996-04-12 | 1996-09-24 | Device for shaping workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0894032A1 true EP0894032A1 (en) | 1999-02-03 |
| EP0894032B1 EP0894032B1 (en) | 2000-07-12 |
Family
ID=7791110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96933377A Expired - Lifetime EP0894032B1 (en) | 1996-04-12 | 1996-09-24 | Device for shaping workpieces |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6047585A (en) |
| EP (1) | EP0894032B1 (en) |
| AT (2) | ATE194519T1 (en) |
| DE (1) | DE19614517A1 (en) |
| WO (1) | WO1997038806A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20021021U1 (en) | 1999-05-17 | 2001-03-29 | Acf Engineering & Automation G | Device for forming a three-sided corner from a flat, plate-shaped material |
| AT410289B (en) * | 2000-01-26 | 2003-03-25 | Acf Engineering & Automation G | Procedure for forming corner section bounded on three sides from flat plate entails forming side walls of component in transition region and in corner region over entire height to bear upon form faces of work tool |
| US7043952B2 (en) * | 2003-11-14 | 2006-05-16 | Rsm. At Kraus & Pleniger Oeg | Method and apparatus for forming flange corners |
| US10478884B2 (en) | 2015-07-15 | 2019-11-19 | Heinrich Daniel Dechamps | Method and device for forming from a flat sheet material a corner bounded by three sides |
| CN110465600A (en) * | 2019-09-03 | 2019-11-19 | 湖北天佳环保科技有限公司 | A kind of automatic drop handle bending machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2476596A (en) * | 1949-07-19 | Bending and anvil die for fmgmt | ||
| US2175679A (en) * | 1937-06-07 | 1939-10-10 | Beatty Machine & Mfg Co | Flanging machine |
| DE4009466C2 (en) * | 1990-03-23 | 1994-07-14 | Gfi Ges Fuer Ingenieurtechnik | Device for forming a corner of a sheet metal delimited on three sides |
| JPH0576940A (en) * | 1991-09-24 | 1993-03-30 | Hitachi Ltd | Method for forming leaf spring |
| IT1266190B1 (en) * | 1994-07-29 | 1996-12-23 | Sapim Amada Spa | BENDING PRESS FOR SHEETS. |
-
1996
- 1996-04-12 DE DE19614517A patent/DE19614517A1/en not_active Withdrawn
- 1996-09-24 EP EP96933377A patent/EP0894032B1/en not_active Expired - Lifetime
- 1996-09-24 US US09/171,057 patent/US6047585A/en not_active Expired - Fee Related
- 1996-09-24 AT AT96933377T patent/ATE194519T1/en not_active IP Right Cessation
- 1996-09-24 WO PCT/EP1996/004176 patent/WO1997038806A1/en active IP Right Grant
-
1999
- 1999-07-21 AT AT0049899U patent/AT3251U2/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9738806A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE194519T1 (en) | 2000-07-15 |
| AT3251U2 (en) | 1999-12-27 |
| DE19614517A1 (en) | 1997-10-16 |
| EP0894032B1 (en) | 2000-07-12 |
| WO1997038806A1 (en) | 1997-10-23 |
| US6047585A (en) | 2000-04-11 |
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