EP0894032B1 - Dispositif pour le faconnage de pieces - Google Patents

Dispositif pour le faconnage de pieces Download PDF

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Publication number
EP0894032B1
EP0894032B1 EP96933377A EP96933377A EP0894032B1 EP 0894032 B1 EP0894032 B1 EP 0894032B1 EP 96933377 A EP96933377 A EP 96933377A EP 96933377 A EP96933377 A EP 96933377A EP 0894032 B1 EP0894032 B1 EP 0894032B1
Authority
EP
European Patent Office
Prior art keywords
tool
workpiece
workpieces
shaped
face
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.)
Expired - Lifetime
Application number
EP96933377A
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German (de)
English (en)
Other versions
EP0894032A1 (fr
Inventor
Engelbert Haslinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACF Engineering and Automation GmbH
Original Assignee
GFI Fertigungstechnik GmbH
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Filing date
Publication date
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Application filed by GFI Fertigungstechnik GmbH filed Critical GFI Fertigungstechnik GmbH
Publication of EP0894032A1 publication Critical patent/EP0894032A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • 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 that are between the two Tools are arranged so that the part to be deformed is not affected by the Tools is covered.
  • a third tool after setting the workpieces are deformed, e.g. Bending work, performed.
  • This patent also provides a device for bending and profiling known from corners, a tool for fixing workpieces is used to hold down the workpiece.
  • This hold-down is in its basic shape is rectangular so that it covers the area of the fully deforming corner of the workpiece. Through the full Covering the corner area, however, is the material in this area prevented from being stretched so that cracks in the corner area can arise from both aesthetic and security Reasons are not acceptable.
  • the object of the invention is a device for deforming workpieces to create what a modification of the tool geometries regarding the workpieces to be deformed and a reliable, qualitative enables high-quality corner profiling.
  • the second tool Since the second tool with a longitudinal displacement device (hydraulics or pneumatic) and only one shift in the intended Direction is desired, the second tool has a device on that a twisting or moving the second tool in a Direction that is not the intended shifting device by the Longitudinal displacement mechanism corresponds, prevented.
  • the device for deforming workpieces on the second tool has a contour that allows workpieces to be clamped, without damaging the workpiece material, but the underside can of the second tool can also be made flat when the workpiece material is very hard.
  • a flat bottom is also an advantage if the workpiece to be deformed has a low hardness, because in this If a plastic coating on the underside damages the surface prevented. .
  • Another advantage of the device according to the invention is that nearby the formed edge formed surface, whereby a certain area of the Workpiece is released from the clamping force, so that the uncovered Area according to the force applied by the hourglass-shaped roller deforms.
  • the device according to the invention offers in particular the Advantage that deformation work, especially corner profiles with high Precision and speed can be performed.
  • Possibility of dimension X which is the lateral horizontal distance between the two vertical surfaces of the two tools, that of the hourglass-shaped Role closest, corresponds to, according to various material parameters such as. Vary workpiece thickness, shelf height, grain size, etc. to achieve a reliable high deformation quality.
  • the cut-out in the corner area of the workpiece to be deformed, as well as the modular properties of the two tools acting as hold-downs, make it possible to optimally adapt the tool dimensions to the workpiece parameters. 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, either by pre-setting the tools or by a device that allows adjustment even during the production process, since it improves the quality the deformation affected. This lateral distance should be less than or equal to five times the thickness of the workpiece, since with a 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) 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 invention Device to achieve a high deformation quality of workpieces.
  • a metallic one is particularly suitable for the design of the hold-down device Material such as Steel or a steel alloy, but it is also possible to coat the underside of the hold-down with plastic, which the The advantage is that workpieces made of softer materials, such as B. aluminum through the plastic coating on its surface not be deformed unintentionally, as is the case with a metal hard Surface would be the case. But it is also possible with very hard or tough workpieces cover the underside of the hold-down over the entire surface to be provided with a very hard metallic layer or suitable as such to harden (e.g. nitriding, laser surface hardening, case hardening, etc.).
  • a very hard metallic layer or suitable as such to harden e.g. nitriding, laser surface hardening, case hardening, etc.
  • Fig. 1 shows a second tool 2 with a contour in the area 5 and a first tool 1 and a workpiece 10 arranged thereon, the Area to be deformed via a shaped edge 3a that covers the side surface 3 closes at the top, protrudes.
  • Another tool 6 is as hourglass-shaped roller formed during the bending process along the Side surface 3 is moved so that the workpiece 10 according to the contour of the Mold edge 3a or the side surface 3 to deform.
  • the distance X which is decisive for the deformation is indicated by a on the hold-down device attached adjustment device (see Fig. 2; 2a) reached.
  • the recording and movability of the second tool 2 is a cylindrical Device 8 preferably of a hydraulic type (also a pneumatic one or a device controlled by toothed rods can be used) realized. Due to the one-point bearing of the second tool 2, one is Device necessary that guides the tool so that only the one desired Degree of freedom - shift in one direction - is retained. 1 with a, arranged parallel to the cylinder 8 Cylinder 7 reached, which runs in a guide 9.
  • Fig. 2 shows a schematic cross section through one of two parts existing second tool, the device for adjusting the Distance X is integrated in the tool head of the second tool.
  • the adjustability is determined by a in the top of the tool 2 located slot 13 in connection with it below, actually holding tool 2, arranged, threaded blind holes 14 realized by the screws guided through the elongated hole 13 in the guides 12 have a game that allows the lower part to move the second tool 2 perpendicular to the screw axes.
  • those located in the blind holes 14 Loosened screws and the lower area of the second tool after adjusted the values as shown in Table 1.
  • the underside 5a can be coated with a material such as e.g. B. plastic or metal, is also a massive training of Tool made of one material possible, so that the underside as in Fig. 2 consists of the base material of the second tool, but the Bottom is flat.
  • the bottom 5a of the second tool e.g. B. hardened by nitriding, laser surface hardening or case hardening his.
  • Fig. 3 shows the detail K of FIG. 2, wherein the dimension Z is the distance of the second tool 2 from the workpiece surface.
  • the distance Z will penetrate the second tool 2 into the surface of the Workpiece 10 prevented by the leakage of the holding surface 5 Force that is applied to the work piece also decreases, 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 Contact pressure is very large.
  • a flat plastic or metal surface can also be used.
  • Fig. 4 shows the top view of an embodiment of the second tool 2, the second tool 2 having no adjustment device.
  • Area A is largely responsible for the deformation quality, because of the size of the area A or the corresponding Surface 11 of the tool is an area to be deformed Workpiece is not covered and is therefore not subjected to a force. By this freedom of stress can the workpiece in this area according to the force applied by the third tool flow and the desired Form corner.
  • the holding surface 5 shown in dashed lines extends like a frame along the corner to be deformed and in the back area of the second tool 2, a between their free end portions Distance is present. The two end sections can also be used together be connected.
  • 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 that Tool has an adjusting device 13.
  • the adjustment device 13 is as shown in Fig. 2 by an attached to the top of the tool 2 Elongated hole realized with holes in which (not shown) Set screws can intervene. Due to the symmetrical arrangement of the Elongated hole along the bisector of the corner angle is a lateral one Slidability of the two parts forming the tool 2 against each other in both horizontal directions at equal amounts possible to the measure X to set. The amount to be set is shown in Table 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (7)

  1. Dispositif pour déformer des pièces (10) en forme de plaques en utilisant un rouleau (6) en forme de sablier comme outil de pliage, lesquelles pièces peuvent être serrées à chaque fois entre un premier outil (1) et un deuxième outil (2), le deuxième outil (2) ayant une surface presse-tôle (5 ou 5a),
       caractérisé en ce que
    les surfaces latérales (3, 4) verticales opposées des outils sont décalées l'une par rapport à l'autre d'une distance horizontale X qui correspond au maximum à cinq fois l'épaisseur de la pièce (10) en forme de plaque, et en ce que
    le deuxième outil (2) ayant la surface presse-tôle (5 ou 5a) est biseauté, formant ainsi une autre surface verticale (11), dans la zone (A) dans laquelle la pièce (10) en forme de plaque est à déformer en un angle et dans laquelle le deuxième outil (2) ne recouvre pas la pièce (10).
  2. Dispositif selon la revendication 1, caractérisé en ce que la distance X est réglable, en tant que distance entre l'arête de forme (3a) et la surface verticale (4), en fonction de l'épaisseur et de la hauteur de bord de la pièce (10).
  3. Dispositif selon l'une des revendications 1 à 2, caractérisé en ce que les pièces (10) sont des plaques, tôles ou feuilles en métal.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la surface de presse (5a) du deuxième outil (2) a un revêtement en matière synthétique ou est constituée d'un matériau métallique et est plane.
  5. Dispositif selon la revendication 4, caractérisé en ce que le revêtement en matière synthétique est en polyéthylène.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la zone terminale de la surface de presse (5) est biseautée de telle sorte que son bord libre est à une petite distance Z de la pièce.
  7. Dispositif selon la revendication 1, caractérisé en ce que le deuxième outil (2) peut être déplacé exclusivement verticalement.
EP96933377A 1996-04-12 1996-09-24 Dispositif pour le faconnage de pieces Expired - Lifetime EP0894032B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19614517 1996-04-12
DE19614517A DE19614517A1 (de) 1996-04-12 1996-04-12 Vorrichtung zum Verformen von Werkstücken
PCT/EP1996/004176 WO1997038806A1 (fr) 1996-04-12 1996-09-24 Dispositif pour le façonnage de pieces

Publications (2)

Publication Number Publication Date
EP0894032A1 EP0894032A1 (fr) 1999-02-03
EP0894032B1 true EP0894032B1 (fr) 2000-07-12

Family

ID=7791110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96933377A Expired - Lifetime EP0894032B1 (fr) 1996-04-12 1996-09-24 Dispositif pour le faconnage de pieces

Country Status (5)

Country Link
US (1) US6047585A (fr)
EP (1) EP0894032B1 (fr)
AT (2) ATE194519T1 (fr)
DE (1) DE19614517A1 (fr)
WO (1) WO1997038806A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410289B (de) * 2000-01-26 2003-03-25 Acf Engineering & Automation G Verfahren und vorrichtung zur bildung einer dreiseitig begrenzten ecke aus einem ebenflächigen, plattenförmigen material
EP1202825B1 (fr) 1999-05-17 2003-10-15 "ACF" Engineering & Automation GmbH Procede et dispositif pour la formation d'un coin limite sur trois cotes a partir d'un materiau en forme de plaque et a surface plane
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
CN110465600B (zh) * 2019-09-03 2024-07-02 湖北天佳环保科技有限公司 一种自动提环折弯机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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 (de) * 1990-03-23 1994-07-14 Gfi Ges Fuer Ingenieurtechnik Vorrichtung zum Bilden einer dreiseitig begrenzten Ecke eines Blechs
JPH0576940A (ja) * 1991-09-24 1993-03-30 Hitachi Ltd 板ばねの成形方法
IT1266190B1 (it) * 1994-07-29 1996-12-23 Sapim Amada Spa Pressa piegatrice per lamiere.

Also Published As

Publication number Publication date
ATE194519T1 (de) 2000-07-15
US6047585A (en) 2000-04-11
EP0894032A1 (fr) 1999-02-03
WO1997038806A1 (fr) 1997-10-23
AT3251U2 (de) 1999-12-27
DE19614517A1 (de) 1997-10-16

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