EP2548668A1 - Procédé de dressage par torsion automatique de pièces allongées et dresseuse destinée à l'exécution du procédé - Google Patents

Procédé de dressage par torsion automatique de pièces allongées et dresseuse destinée à l'exécution du procédé Download PDF

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Publication number
EP2548668A1
EP2548668A1 EP11405290A EP11405290A EP2548668A1 EP 2548668 A1 EP2548668 A1 EP 2548668A1 EP 11405290 A EP11405290 A EP 11405290A EP 11405290 A EP11405290 A EP 11405290A EP 2548668 A1 EP2548668 A1 EP 2548668A1
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EP
European Patent Office
Prior art keywords
workpiece
straightening
torsion
measuring
measuring device
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.)
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Application number
EP11405290A
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German (de)
English (en)
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EP2548668B1 (fr
Inventor
Peter Frauenfelder
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.)
CESARE GALDABINI S.P.A.
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Galdabini Prazisions Maschinen AG
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Priority to EP11405290.5A priority Critical patent/EP2548668B1/fr
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    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting

Definitions

  • the invention relates to a method for automatically torsional straightening of elongated workpieces in a torsion straightening machine, comprising two opposing holding devices for introducing a torque onto the workpiece and with a measuring device for measuring the workpiece, the measuring device and the workpiece being moved relative to one another.
  • Known Torsionsrichtmaschinen consist essentially of a fixed head, which holds the workpiece against rotation and a torsion head, which should eliminate an error detected on the workpiece.
  • the appropriate angle of rotation for the correction of the existing error is learned and optimized on the basis of already oriented workpieces, so that an optimal directional time can be achieved.
  • Torsionsmagazin it is also known to measure with a measuring device in the workpiece to be machined at intervals of, for example, 500 mm, the inclination of the workpiece and then to eliminate the detected error by torsion. After each measurement, the workpiece is re-clamped.
  • the directional accuracy is essentially dependent on the experience of the operator.
  • the guideline time is comparatively high because, as mentioned, the workpiece must be re-clamped after each measurement. The workpiece often remains taut until the torsion is directed through 0 to n strokes in tolerance. Only then the profile is released and re-clamped at another point.
  • the invention has for its object to provide a method of the type mentioned, which allows a higher torsional accuracy and a shorter guide time.
  • the problem is solved according to claim 1.
  • the workpiece in the torsion straightening machine is measured at least once essentially continuously between its two ends and without restoring the workpiece substantially continuously following it in the torsion straightening machine.
  • the workpiece in particular a profile-like workpiece, is continuously measured. Due to the measurement, an area with maximum torsion can be determined. By moving the holding devices, it is then possible in particular to direct this area. Thus, only this part of the workpiece is aligned.
  • the measuring steps and the corresponding straightening steps can subsequently be carried out essentially as desired.
  • a curve is recorded, which shows the inclination or torsion at the corresponding point of the workpiece.
  • One or both fixtures are then driven to the area having the maximum torsion.
  • bending bending is conceivable before or after the torsion.
  • the Torsionsfeld and optionally the Bie shareen can be carried out largely automatically.
  • As measuring device is an optical measuring device, for example, such with a laser. This preferably generates on the surface to be measured an optical strip which extends substantially and preferably at right angles to the longitudinal direction of the workpiece.
  • essentially continuous means that the workpiece is measured in steps of less than 20 mm, preferably 10 mm or shorter.
  • the individual measurements are recorded and, as mentioned, preferably recorded on a display as a curve. This curve is used to determine the area with maximum torsion.
  • a tactile measuring device is also conceivable instead of an optical or laser-optical measuring device.
  • the optical measuring device to project a line onto the workpiece during the measuring process.
  • the inclination of the workpiece or the measured surface of the workpiece is preferably measured and recorded.
  • two or more measuring devices are conceivable instead of a single measuring device.
  • a slope curve is recorded during the measuring process.
  • the workpiece is preferably moved. In principle, it would also be possible to move the measuring device.
  • the workpiece is measured along its entire length.
  • the location or the area of the workpiece is determined which has the greater straightening requirement in accordance with the measurement and which is initially directed at this area by the exertion of a torque.
  • the straightening is done by exerting a corresponding twisting action with a certain angle.
  • the measuring process and the torsion are performed several times in succession.
  • the workpiece is preferably located on two spaced-apart pads that can be moved on a table.
  • At least one of the holding devices for performing a torsion process is rotatable. This holding device is then corresponding to the torsion head. The other holding device is the fixed head.
  • the rotatable holding device is open and thus for directing from the outside at any point of the workpiece to this can be applied.
  • the holding device is for example C-shaped with a radially outwardly open recess.
  • the holding device or the torsion head can then be moved to the desired location and placed from the outside on the workpiece. The placement is thus transverse to the longitudinal direction of the workpiece. This means that every part of the workpiece can be approached very quickly and precisely become. After placing the holding device on the workpiece this is clamped and subjected to a suitable torsion.
  • one of the holding devices has a straightening die and a straightening pad, between which the workpiece can be fixed for straightening.
  • This holding device then forms the so-called fixed head.
  • This fixed head allows a secure and precise fixation of the workpiece at the appropriate position.
  • This holding device or the fixed head is preferably fixedly connected to the table. In principle, however, a design is conceivable in which this holding device or the fixed head is also movable.
  • the area with the maximum torsion requirement is determined after at least one measuring operation. This determination is preferably made by a suitable controller and said area is recorded visually. For torsion then preferably the workpiece is moved. In addition, the torsion head is placed in the appropriate place.
  • the invention also relates to a straightening machine for carrying out the method according to the invention.
  • a straightening machine 23 shown in a greatly reduced representation has an elongated table 8 on which two supports 11 and 12 are movably mounted.
  • the arrows 13 to 16 show the possible directions of travel of these requirements 11 and 12.
  • a workpiece 1 is mounted on these supports 11 and 12.
  • This workpiece 1 can be removed upwards from the supports 11 and 12 above.
  • the workpiece 1 is in particular a profile with an upper side 1a. In the method, the workpiece 1 can be clamped by the supports 11 and 12 or otherwise fixed.
  • a first holding device 2 which forms a so-called fixed head. It has two cylinders 17, for example, electric cylinders, with which two jaws 18 in the directions of the double arrows 19 are movable. With these two jaws 18, the workpiece 1 can be fixed at the desired location.
  • One of the jaws 18 may form a straightening die and the other a straightening pad. Conceivable here are also other fixed heads. The fixing or the release of the workpiece 1 via a controller, not shown here.
  • a second holding device 3 is arranged on the table 8.
  • This second holding device 3 forms the torsion head and is preferably movable along the table 8.
  • the second holding device 3 is provided with a measuring device 4, which is preferably an optical measuring device and more preferably a laser-optical measuring device. With this can be directed downwards against the workpiece 1, an optical beam 5, which records a line 5a on the top 1a. The measurement can also be made laterally against the workpiece, thus not necessarily from top to bottom. This preferably extends transversely to the longitudinal direction of the workpiece 1.
  • the workpiece 1 can be measured from a first end 6 to a second end 10 with respect to the inclination of the upper side 1a and / or one of the two side surfaces.
  • the underside not visible here could also be measured.
  • the workpiece 1 is moved in its longitudinal direction.
  • the result of this measurement is according to Fig. 5 displayed on a display or the like as a curve.
  • a region B with maximum torsion or with maximum torsional requirement is determined.
  • the length of this region can be, for example, 100 or 200 mm or even longer, for example 500 to 2000 mm, or shorter. But here are also longer and shorter areas conceivable.
  • the measurement is carried out in very small steps, for example in steps of less than 20 mm, preferably 10 mm and less mm.
  • the said range is thus correspondingly larger than, for example, 10 mm or 20 mm.
  • these are thus comparatively small steps.
  • the Fig. 4 shows how the workpiece 1 with two opposing torsion means 21, so in particular the jaws of a Torsionszange, the second holding device 3 and the Torsionskopfes is taken in a downwardly open opening 22.
  • the torsion means 21 can thus be placed at any point on the workpiece 1 and removed from this again.
  • the workpiece 1 With the two torsion means 21, the workpiece 1 can be fixed and rotated at a desired angle to initiate a torque about its longitudinal axis.
  • the Fig. 1 are indicated with the double arrow 20, the directions of rotation, with which the workpiece 1 can be rotated about its longitudinal axis.
  • the measuring device 4 is firmly connected to the second holding device 3.
  • the measuring device 4 could also be mounted separately from the second holding device 3 on the table 8 or else on a suitable stable device. If the workpiece 1 is directed, the final measurement is carried out with the measuring device 4. Subsequently, the workpiece 1 is removed from the directional mesh, which is then ready for another straightening process. As can be seen, the workpiece 1 to be straightened for the straightening process from beginning to end must not be re-clamped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP11405290.5A 2011-07-20 2011-07-20 Procédé pour le dressage automatique de pièces allongées par torsion Active EP2548668B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11405290.5A EP2548668B1 (fr) 2011-07-20 2011-07-20 Procédé pour le dressage automatique de pièces allongées par torsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11405290.5A EP2548668B1 (fr) 2011-07-20 2011-07-20 Procédé pour le dressage automatique de pièces allongées par torsion

Publications (2)

Publication Number Publication Date
EP2548668A1 true EP2548668A1 (fr) 2013-01-23
EP2548668B1 EP2548668B1 (fr) 2016-01-20

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EP11405290.5A Active EP2548668B1 (fr) 2011-07-20 2011-07-20 Procédé pour le dressage automatique de pièces allongées par torsion

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EP (1) EP2548668B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384273A (zh) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 一种钢轨用夹紧扭弯装置
CN104384272A (zh) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 一种钢轨用带平台的扭弯夹紧装置
CN108421853A (zh) * 2018-05-18 2018-08-21 浙江亚磊型钢冷拔有限公司 一种异型钢校扭机
EP3744436A1 (fr) 2019-05-27 2020-12-02 Grimm AG Presse à redresser et procédé de redressage par cintrage des pièces allongées
DE102022210294A1 (de) 2022-09-28 2024-03-28 Felsomat Gmbh & Co. Kg Verfahren und Messstation zum Bestimmen der Geradheit von Stableitern

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH511074A (de) * 1969-07-16 1971-08-15 Ver Drahtwerke Ag Verfahren zum Torsionsrichten eines Profilstabes und Einrichtung zur Durchführung des Verfahrens
DE3735015A1 (de) * 1987-06-11 1988-12-22 Dunkes S Maschinen Richtpresse
DE4007489A1 (de) * 1990-03-09 1991-09-12 Hoesch Ag Richtpresse
WO2010023563A2 (fr) * 2008-08-25 2010-03-04 Monteferro S.P.A. Chaîne de production de guides de levage et de produits similaires et procédé de production pour la fabrication de ceux-ci

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH511074A (de) * 1969-07-16 1971-08-15 Ver Drahtwerke Ag Verfahren zum Torsionsrichten eines Profilstabes und Einrichtung zur Durchführung des Verfahrens
DE3735015A1 (de) * 1987-06-11 1988-12-22 Dunkes S Maschinen Richtpresse
DE4007489A1 (de) * 1990-03-09 1991-09-12 Hoesch Ag Richtpresse
WO2010023563A2 (fr) * 2008-08-25 2010-03-04 Monteferro S.P.A. Chaîne de production de guides de levage et de produits similaires et procédé de production pour la fabrication de ceux-ci

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384273A (zh) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 一种钢轨用夹紧扭弯装置
CN104384272A (zh) * 2014-11-17 2015-03-04 汝州郑铁三佳道岔有限公司 一种钢轨用带平台的扭弯夹紧装置
CN104384273B (zh) * 2014-11-17 2016-02-17 汝州郑铁三佳道岔有限公司 一种钢轨用夹紧扭弯装置
CN104384272B (zh) * 2014-11-17 2016-02-17 汝州郑铁三佳道岔有限公司 一种钢轨用带平台的扭弯夹紧装置
CN108421853A (zh) * 2018-05-18 2018-08-21 浙江亚磊型钢冷拔有限公司 一种异型钢校扭机
EP3744436A1 (fr) 2019-05-27 2020-12-02 Grimm AG Presse à redresser et procédé de redressage par cintrage des pièces allongées
DE102019114112A1 (de) * 2019-05-27 2020-12-03 Grimm AG Richtpresse und Verfahren zum Biegerichten von länglichen Werkstücken
DE102019114112B4 (de) 2019-05-27 2021-09-30 Grimm AG Richtpresse und Verfahren zum Biegerichten von länglichen Werkstücken
DE102022210294A1 (de) 2022-09-28 2024-03-28 Felsomat Gmbh & Co. Kg Verfahren und Messstation zum Bestimmen der Geradheit von Stableitern
WO2024068665A1 (fr) 2022-09-28 2024-04-04 Felsomat Gmbh & Co. Kg Procédé et station de mesure pour la détermination de la rectitude de barres conductrices

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