EP2198985A1 - Procédé et dispositif de pliage d'une pièce en tôle - Google Patents

Procédé et dispositif de pliage d'une pièce en tôle Download PDF

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Publication number
EP2198985A1
EP2198985A1 EP09013632A EP09013632A EP2198985A1 EP 2198985 A1 EP2198985 A1 EP 2198985A1 EP 09013632 A EP09013632 A EP 09013632A EP 09013632 A EP09013632 A EP 09013632A EP 2198985 A1 EP2198985 A1 EP 2198985A1
Authority
EP
European Patent Office
Prior art keywords
bending
cheek
edge
radius
upper beam
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
Application number
EP09013632A
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German (de)
English (en)
Other versions
EP2198985B1 (fr
Inventor
Ralf Beger
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2198985A1 publication Critical patent/EP2198985A1/fr
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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
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the invention relates to a method having the features of the preamble of claim 1.
  • the invention further relates to a Blechabkantvorraum suitable for carrying out this method with the features of the preamble of claim. 6
  • Such Blechabkantvorides is from this side EP 1 810 761 B1 known. It essentially comprises a lower beam, an upper beam which can be delivered thereto and which has a bending edge with a radius R, and a bending beam which is pivotable about a pivot axis parallel to the bending edge.
  • the lower beam and the bending cheek are adjustable together in the sheet support plane defined by the lower cheek perpendicular to the bending edge of the upper beam to an adjustable degree.
  • the performed with this known device bending method accordingly has the peculiarity that the lower beam and the bending beam are adjusted before the beginning of bending or Abkantens of the sheet metal part relative to the bending edge of the upper beam to a degree that, according to a specified in said publication relationship of the radius of the bending edge , the strength of the sheet metal part and the pivot angle of the bending beam, ultimately the desired bending angle, depends.
  • the structural design of an embodiment the bending device with which realizes this method, ie a default setting of the common position of the lower beam and bending beam is made relative to the upper beam is given in said document.
  • the invention has for its object to provide a method having the features of the preamble of claim 1 and a Blechabkantvoriques with the features of claim 6 for performing this method available, which make it possible toproofkanten sheet metal parts with tight tolerances.
  • this object is achieved in that at fixed lower cheek, the bending cheek is adjusted in the sheet support plane depending on the progress of the bending process perpendicular to the bending edge of the upper beam in a Y-direction corresponding to an increasing distance from the bending edge, where X, Y and Z are the axes of a rectangular coordinate system in which the X-axis is parallel to the bending edge and the Z-axis is parallel to the feed direction of the upper beam on the lower beam.
  • the stated object is achieved in that the lower beam is stationary under the upper beam and that the bending cheek in the sheet support plane at right angles is adjustable to the bending edge of the upper beam by means of a motor drive in a Y-direction to a dependent on the progress of the bending process path V.
  • the method and the Blechabkantvorutter according to the invention thus differ from the method and the device according to the EP 1 810 761 B1 in particular, that the lower beam is fixed relative to the upper beam during bending and that the bending beam is no longer moved before the beginning of bending by a fixed amount relative to the bending edge of the upper beam, that is preset, but is adjusted during bending.
  • a better investment of the sheet metal part is achieved both at the radius of the bending edge of the upper beam and on the bending surface of the bending beam during the bending process, with the result that the bending radius of the fold is independent of the sheet thickness with improved accuracy equal to the bending radius of the bending edge ,
  • the bending cheek can be adjusted depending on the progress of the bending process, either continuously or in successive small steps.
  • the adjustment of the bending beam takes place with a small lead over the increasingly increasing to the predetermined final value bending angle.
  • the bending cheek be adjusted by a distance whose length is determined as a function of the sum of the bending radius R of the upper beam and the gap S between the upper beam and the lower beam, ie the thickness of the sheet metal part.
  • the most accurate is the radius of the fold equal to the radius R of the bending edge when the lower cheek is set with its bending edge facing the front edge opposite the bending edge to the radius R reset.
  • This adjustment unlike bending during bending, is made before the beginning of the bending process.
  • the same result is achieved in stationary lower cheek with different upper cheeks, which are installed or adjusted depending on the respective radius of their bending edge so that the center of curvature of the bending edge is aligned with the front edge or surface of the lower cheek, so the bending edge to the respective radius R. protrudes beyond the leading edge or surface of the lower cheek.
  • a Blechabkantvortechnische with the features mentioned above and the suitability for carrying out the method according to the invention is characterized in that the lower beam is stationary under the upper beam and that the bending cheek in the sheet support plane at right angles to the bending edge of the upper beam in the Y direction is adjustable by an adjustable path V.
  • "stationary" in contrast to the aforementioned, known bending device that the lower beam is not moved during the Abkantens.
  • the lower beam adjustable in such a way that it is set back with its bending edge facing the front edge opposite the bending edge of the upper beam to the radius R reset.
  • the device preferably has a motor drive for adjusting and pivoting the bending cheek.
  • This motor drive may in particular comprise a drive for adjusting and a further drive for pivoting the bending beam.
  • Such a motor drive can be realized especially with small designs by electric motors with downstream reduction gear, because of their precise controllability preferably by stepper motors.
  • FIG. 1 shows greatly simplified a lower beam 2, a lowered to this for bending or bending a sheet metal part 30 upper cheek 3 and a bending cheek 4 for folding the first still flat sheet metal part 30th
  • FIG. 2 illustrates the position of the bending beam 4 after covering a bending angle of 60 °.
  • FIG. 3 illustrates the position of the bending beam 4 after covering a bending angle of 120 °.
  • FIG. 3a exemplifies for this bending angle of 120 °, the geometric conditions in Abkant Scheme.
  • the lower beam 2 stationary under the upper beam 3, with its bending beam 4 facing front edge 2.1 relative to the bending edge 3.1 of the upper beam 3 reset by the radius R, so that the bending edge of the upper beam 3.1 on the front edge 2.1 of the lower beam 2 to the Amount R protrudes.
  • ⁇ is the instantaneous value of the swivel angle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP09013632.6A 2008-12-22 2009-10-29 Procédé et dispositif de pliage d'une pièce en tôle Active EP2198985B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008064227A DE102008064227B3 (de) 2008-12-22 2008-12-22 Verfahren zum Abkanten eines Blechteils in einer Blechabkantvorrichtung und zur Durchführung dieses Verfahrens geeignete Blechabkantvorrichtung zum Abkanten eines Blechteils

Publications (2)

Publication Number Publication Date
EP2198985A1 true EP2198985A1 (fr) 2010-06-23
EP2198985B1 EP2198985B1 (fr) 2015-07-08

Family

ID=41432746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09013632.6A Active EP2198985B1 (fr) 2008-12-22 2009-10-29 Procédé et dispositif de pliage d'une pièce en tôle

Country Status (2)

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EP (1) EP2198985B1 (fr)
DE (1) DE102008064227B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112935025A (zh) * 2021-01-28 2021-06-11 重庆长安汽车股份有限公司 汽车白车身顶盖激光焊实验片折弯设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2612485A1 (de) * 1976-03-24 1977-10-06 Josef Kuhn Biegemaschine
EP0497778B1 (fr) * 1989-10-26 1993-07-28 Reinhardt Maschinenbau GmbH Dispositif pour le pliage d'une tole
DE19529126A1 (de) * 1995-08-08 1997-02-13 Reinhardt Gmbh Maschbau Vorrichtung zum Biegen eines Bleches
EP1810761A1 (fr) * 2006-01-24 2007-07-25 Ralf Beger Dispositif de pliage de tôles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597398B1 (fr) * 1986-04-16 1990-12-07 Favrin Pierre Presse plieuse a tablier pivotant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2612485A1 (de) * 1976-03-24 1977-10-06 Josef Kuhn Biegemaschine
EP0497778B1 (fr) * 1989-10-26 1993-07-28 Reinhardt Maschinenbau GmbH Dispositif pour le pliage d'une tole
DE19529126A1 (de) * 1995-08-08 1997-02-13 Reinhardt Gmbh Maschbau Vorrichtung zum Biegen eines Bleches
EP1810761A1 (fr) * 2006-01-24 2007-07-25 Ralf Beger Dispositif de pliage de tôles
EP1810761B1 (fr) 2006-01-24 2008-05-07 Ralf Beger Dispositif de pliage de tôles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
21 October 2007, MACHINE PRODUCTION, XP001335604, 474 *

Also Published As

Publication number Publication date
EP2198985B1 (fr) 2015-07-08
DE102008064227B3 (de) 2010-05-27

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