EP1342514B1 - Dispositif pour detecter un angle de cintrage d'un anneau, et procédé de régulation d'une cintreuse - Google Patents
Dispositif pour detecter un angle de cintrage d'un anneau, et procédé de régulation d'une cintreuse Download PDFInfo
- Publication number
- EP1342514B1 EP1342514B1 EP20030004720 EP03004720A EP1342514B1 EP 1342514 B1 EP1342514 B1 EP 1342514B1 EP 20030004720 EP20030004720 EP 20030004720 EP 03004720 A EP03004720 A EP 03004720A EP 1342514 B1 EP1342514 B1 EP 1342514B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- angle
- bent
- measuring
- machine
- 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
Links
- 238000005452 bending Methods 0.000 title claims description 317
- 238000000034 method Methods 0.000 title claims description 38
- 230000001105 regulatory effect Effects 0.000 title 1
- 238000011156 evaluation Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000013000 roll bending Methods 0.000 description 2
- 238000003462 Bender reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/14—Bending rods, profiles, or tubes combined with measuring of bends or lengths
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
Definitions
- the invention relates to a bending machine with a device for detecting a bending angle of a movable in a feed direction of a bending part, wherein the bending machine has bending rollers through which the bending part is transported during the bending operation in the feed direction, while the bending part in the bending machine of the action of a in a to the feed direction different bending direction acting bending tool is subjected, and a method for controlling a bending machine.
- the known methods for detecting a directional angle disadvantageously allow only the bending radius after a certain rolling distance, which may be up to 600 mm long, depending on the bending geometry and the roller arrangement of the bending machine.
- a certain rolling distance which may be up to 600 mm long, depending on the bending geometry and the roller arrangement of the bending machine.
- unknown material behavior of the workpiece to be bent thus there is a risk that the workpiece was bent after this required to determine the bending radius rolling line with a wrong bending radius and has already reached (prematurely) the desired bending angle, or that only a small rolling line remains after the detection of the bending radius can be bent with the correct radius.
- a precise bending of workpieces with unknown material behavior is thus not immediately possible with the known methods in a disadvantageous manner.
- Another disadvantage of the known method is that no or only a conditional reaction to disturbances during the bending process is possible.
- a folding machine having a self-learning device by which the folding angle of an element to be folded can be measured to obtain drive data for a folding device, which then allows a plurality of folding elements to be folded by the same folding angle.
- a Kodierertragelement is detachably mounted on the base plate.
- the encoder support member carries an encoder having a rotary scale transfer member for transferring the amount of folding of the item to be folded.
- a gripping portion of the rotary scale transmission member engages the element to be folded, and a connecting bridge connected to the gripping portion transmits the deflection of the gripping portion to a rotary shaft of the encoder.
- the device has at least one angle measuring device which is arranged in the feed direction of the bending part according to the bending tool of the bending machine, that the at least one angle measuring device has a transmitter having a measuring element which can be brought into a measuring system to the bending part in that at least one angle measuring device is pivotable about an axis that is substantially orthogonal to the bending plane of the bending part, that measuring signals generated by the angle measuring device or measuring devices at the bending part can be conducted to a control and evaluation device of the bending machine.
- a bending machine is provided with a device for detecting the bending angle of the bending part in an advantageous manner, which is characterized in that the bending angle during the bending process continuously, quasi-continuously or at certain time intervals in a simple manner can be detected ,
- the device according to the invention thus advantageously permits an in-process measurement of the bending angle, which ensures that deviations of the bending angle of the bending part from a predetermined nominal value can be detected directly and the bending process can be corrected accordingly.
- the device according to the invention can advantageously be used as a measuring device for simple and direct detection of the relative and absolute angles of two straight lines of the workpiece lying on the same plane, wherein the measurement of the directional angle of a straight line within the measuring range of the Winkeimeßvorraum the straight line to be measured can be made easily and quickly.
- An advantage here is also that the angle between the two lines can still be measured even if the position and the direction of the two lines or the angle between these two lines changed. This allows in particular the controlled in-process measurement during bending, measurement of pre-bent bending parts having one or more arcs, the angle measurement of straight lines connected by a U-shaped structure, and the controlled bending and / or bending of the aforementioned structures.
- a further advantage of the bending machine according to the invention is that when calibrating the at least one angle measuring device, the straight lines to be measured can be located at arbitrary locations within the measuring range.
- Another advantage of the device according to the invention of the bending machine is that it is easy to handle, since in the device according to the invention no complicated zero balancing must be performed. Rather, it is for detecting the bending angle of the bent part in an advantageous manner only required that before the bending process, the two transducers of the two bending devices are brought into contact with the straight, so not bent part and the present then the position of the two transducers as the zero Position is set.
- Another advantage of the device according to the invention is that it is suitable for in-process measurement of bending angles for almost any bending radii. Therefore, the device according to the invention is characterized by its high flexibility.
- An advantageous development of the invention provides that at least one of the angle measuring is arranged on a measuring arm.
- Such a measure has the advantage that in this way in a simple manner, the angle measuring easily slightly different curvatures of the bent part can be nachkg.den so as to keep the transmitter of the angle measuring in abutment with the bending part.
- a further advantageous embodiment of the invention provides that the measuring arm is designed as a joint-parallelogram, the first end is preferably attached to the bending machine and the second end carries an angle measuring.
- Such a measure has the advantage that in this way a particularly suitable guide element for the angle measuring device is formed in a simple manner.
- Another advantage of this measure is in that thereby the function of the bending machine, in particular a three- or four-roller bending machine, not limited by the device according to the invention or the inventive device is not limited in a measuring process by the structure of the bending machine in its measuring range.
- a further advantageous embodiment of the invention provides that at least one angle measuring device is rotatably arranged on the bending machine.
- Such a configuration is used in particular for use as an inlet-side, arranged in front of the bending tool of the bending machine Winkelmeß liked, since in this area the bent part still has its straight, non-curved course.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Claims (15)
- Cintreuse, comportant un dispositif destiné à détecter un angle de cintrage d'une pièce à cintrer (B), apte à être transportée dans une direction d'avance, ladite cintreuse comportant des galets (2a - 2c), par lesquels la pièce à cintrer (B) peut être transportée dans la direction d'avance pendant le processus de cintrage, tandis que la pièce à cintrer (B) est soumise dans la cintreuse (1) à l'influence d'un outil de cintrage (2) agissant dans une direction de cintrage différente de la direction d'avance, caractérisée en ce que le dispositif (1) comporte au moins un dispositif de mesure angulaire (10b), qui, par référence à la direction d'avance de la pièce à cintrer (B), est monté en aval de l'outil de cintrage (2) de la cintreuse (1), en ce que ledit au moins un dispositif de mesure angulaire (10b) comporte un capteur de mesure (11), qui comporte un élément de mesure (15) qui peut être amené en appui contre la pièce à cintrer (B) en vue de la mesurer, en ce que ledit au moins un dispositif de mesure angulaire (10b) est apte à pivoter autour d'un axe sensiblement orthogonal par rapport au plan de cintrage de la pièce à cintrer (B) , en ce que les signaux de mesure délivrés par le ou les dispositifs de mesure angulaire (10a, 10b), disposés chacun en appui contre la pièce à cintrer (B) en vue de la mesurer, peuvent être transmis vers un dispositif de commande et d'analyse de la cintreuse (1), en ce que le dispositif de commande et d'analyse détermine la différence entre l'angle de cintrage détecté par le dispositif de mesure angulaire (10b) au début de la trajectoire de cintrage parcourue par la pièce à cintrer (B) et l'angle de cintrage détecté à la fin de ladite trajectoire de cintrage et, à partir du rapport entre la trajectoire de cintrage et la différence entre les angles de cintrage, calcule un développement réel de la pièce à cintrer (B) et le compare à un développement théorique et, à partir de là, procède à une variation du réglage de l'outil de cintrage en vue de compenser la différence entre le développement théorique et le développement réel.
- Cintreuse selon la revendication 1, caractérisée en ce que le dispositif (1) comporte un dispositif de mesure angulaire (10a) supplémentaire qui, par référence à la direction d'avance de la pièce à cintrer (B), est monté en amont de l'outil de cintrage (2) de la cintreuse (1).
- Cintreuse selon la revendication 1 ou 2, caractérisée en ce qu'au moins un dispositif de mesure angulaire (10a, 10b) comporte un capteur de mesure (11).
- Cintreuse selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un dispositif de mesure angulaire (10a, 10b) comporte un capteur de rotation (14), sur l'axe (A) duquel est disposé un élément de mesure (15) apte à être amené en appui contre la pièce à cintrer (B) en vue de la mesurer.
- Cintreuse selon la revendication 4, caractérisée en que l'élément de mesure (15) du dispositif de mesure angulaire (10a, 10b) comporte une unité de préhension (16), à l'intérieur de laquelle la pièce à cintrer (B) peut être immobilisée.
- Cintreuse selon la revendication 5, caractérisée en ce que l'unité de préhension (16) de l'élément de mesure (15) du dispositif de mesure angulaire (10a, 10b) comporte un corps de base (16') en forme de U, à l'intérieur duquel la pièce à cintrer (B) peut être immobilisée en position par un élément d'approche (17).
- Cintreuse selon la revendication 4, caractérisée en ce que l'élément de mesure (15) comporte une plaque (18) sur laquelle peut être disposé au moins un téton de mesure (19).
- Cintreuse selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un dispositif de mesure angulaire (10a, 10b) comporte un bras (12) de mesure, réalisé de préférence sous forme de parallélogramme articulé, dont la première extrémité (12') est reliée, de préférence, de manière mobile avec la cintreuse (1) et dont la deuxième extrémité (12') porte le capteur de mesure (11).
- Cintreuse selon l'une quelconque des revendications 1 à B, caractérisée en ce qu'au moins un dispositif de mesure angulaire (10a, 10b) comporte un bras (12) de mesure qui est muni de deux guidages linéaires (23a, 23b ; 23a, 23b'), un guidage linéaire (23b, 23b') portant à son extrémité le capteur de mesure (11) et ledit guidage linéaire (23b, 23b') étant monté rotatif sur un chariot (24, 24'), ledit chariot (24, 24') étant monté mobile sur l'autre guidage linéaire (23a).
- Cintreuse selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le bras (12) de mesure est réalisé sous la forme d'un rail (20) dans la surface de travail de la cintreuse.
- Procédé destiné à commander une cintreuse (1), qui comporte un outil de cintrage (2) et dans laquelle la pièce à cintrer (B) est soumise à l'influence d'un outil de cintrage (5) agissant dans une direction de cintrage différente de la direction d'avance de la pièce à cintrer (B), caractérisé en ce qu'un dispositif de commande et d'analyse de la cintreuse (1) est prévu pour déterminer, dans la direction d'avance de la pièce à cintrer (B), un développement théorique de celle-ci, nécessaire pour obtenir un angle de cintrage prédéfini et un rayon de cintrage prédéfini de la pièce à cintrer (B) , et l'outil de cintrage (2) de la cintreuse (1) est réglé dans sa direction de cintrage conformément audit développement théorique, en ce que la pièce à cintrer (B) est avancée dans la direction d'avance sur une trajectoire de cintrage et est cintrée par l'outil de cintrage (2) de la cintreuse (1), en ce que la trajectoire de cintrage de la pièce à cintrer (B) est détectée et la différence entre l'angle de cintrage au début de ladite trajectoire et celui à la fin de ladite trajectoire est déterminée par un dispositif (1) destiné à détecter un angle de cintrage, lequel comporte au moins un dispositif de mesure angulaire (10b) qui, par référence à la direction d'avance de la pièce à cintrer (B), est monté en aval de l'outil de cintrage (2) de la cintreuse (1), et au moins un dispositif de mesure angulaire (10b) comporte un capteur de mesure (11), qui possède un élément de mesure (15) qui peut être amené en appui contre la pièce à cintrer (B) en vue de la mesurer, en ce qu'à partir du rapport entre la trajectoire de cintrage et la différence des angles de cintrage est déterminé un développement réel, en ce que le dispositif de commande et d'analyse compare le développement théorique avec le développement réel et à partir de cette comparaison procède à une variation du réglage de l'outil de cintrage (2) en vue de compenser la différence entre le développement théorique et le développement réel.
- Procédé selon la revendication 10 ou 11, caractérisé en ce qu'une approche de l'outil de cintrage (2) est agrandie lorsque la valeur du développement réel est supérieure à la valeur du développement théorique, ou en ce que l'approche de l'outil de cintrage (2) est diminuée lorsque la valeur du développement réel est inférieure à la valeur du développement théorique.
- Procédé selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le processus de cintrage est interrompu à un degré déterminé avant l'obtention de l'angle de cintrage souhaité de la pièce à cintrer (B) ou avant l'obtention de l'angle théorique, en ce que l'angle de cintrage réel et le réglage réel de l'outil de cintrage (2), ainsi que la position d'avance de la pièce à cintrer (B) sont mesurés, en ce qu'il est alors effectué un pliage intermédiaire, en ce que, à l'issue de ce pliage intermédiaire, l'angle de cintrage de la pièce à cintrer (B) est à nouveau mesuré et un effet de pliage est calculé à partir de la différence entre ces deux angles de cintrage.
- Procédé selon la revendication 13, caractérisé en ce que, après la détermination de l'effet de pliage, la cintreuse (1) inverse sa direction d'avance et la pièce à cintrer (B) et la cintreuse (1) sont ramenées dans leur position initiale avant le pliage intermédiaire.
- Procédé selon la revendication 13 ou 14, caractérisé en ce que le processus de cintrage est mis en oeuvre par la cintreuse (1) avec un angle de cintrage corrigé selon l'effet de pliage.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20203583U DE20203583U1 (de) | 2002-03-06 | 2002-03-06 | Vorrichtung zur Erfassung eines Richtungswinkels, insbesondere eines Biegewinkels, eines Werkstücks, insbesondere eines Biegeteils |
DE20203583U | 2002-03-06 | ||
DE10218432A DE10218432A1 (de) | 2002-03-06 | 2002-04-25 | Vorrichtung zur Erfassung eines Richtungswinkels, insbesondere eines Biegewinkels, eines Werkstücks, insbesondere eines Biegeteils |
DE10218432 | 2002-04-25 | ||
DE10249300A DE10249300A1 (de) | 2002-03-06 | 2002-10-22 | Vorrichtung zur Erfassung eines Ringbiegewinkels, insbesondere eines Biegewinkels, eines Werkstücks, insbesondere eines Biegeteils, sowie ein Verfahren zur Regelung einer Biegemaschine |
DE10249300 | 2002-10-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1342514A2 EP1342514A2 (fr) | 2003-09-10 |
EP1342514A3 EP1342514A3 (fr) | 2004-03-24 |
EP1342514B1 true EP1342514B1 (fr) | 2009-05-27 |
Family
ID=27761007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030004720 Expired - Lifetime EP1342514B1 (fr) | 2002-03-06 | 2003-03-04 | Dispositif pour detecter un angle de cintrage d'un anneau, et procédé de régulation d'une cintreuse |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1342514B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008052474A1 (de) * | 2008-10-20 | 2010-04-22 | Rasi Maschinenbau Gmbh | Verfahren zum maschinellen Biegen von Stäben, insbesondere von Rohren |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBS20090022A1 (it) * | 2009-02-10 | 2010-08-11 | Faccin Srl | Metodo e dispositivo per la curvatura di un articolo siderurgico |
IT1394105B1 (it) * | 2009-05-06 | 2012-05-25 | Cml Int Spa | Macchina per curvare in modo continuo un pezzo allungato secondo raggi predeterminati |
CN101856683B (zh) * | 2010-06-21 | 2012-02-22 | 长治钢铁(集团)锻压机械制造有限公司 | 型材弯曲机 |
DE102011006101B4 (de) * | 2011-03-25 | 2015-12-24 | Wafios Ag | Verfahren zur Herstellung eines Biegeteils und Biegemaschine zur Durchführung des Verfahrens |
CN102240707B (zh) * | 2011-05-10 | 2013-08-14 | 山东雷帕得弹簧有限公司 | 自动弯管装置及其弯管工艺 |
CN103071708B (zh) * | 2011-12-30 | 2016-07-06 | 河北建设集团有限公司 | 大直径钢管简易弯管装置 |
CN102641924B (zh) * | 2012-05-10 | 2014-04-09 | 西安向阳航天材料股份有限公司 | 双金属复合热煨弯管的制造设备及制造方法 |
CN102941264B (zh) * | 2012-11-23 | 2014-12-17 | 贵州安大航空锻造有限责任公司 | 铝合金闪光焊薄壁环件的型材弯曲制坯方法 |
CN102941262B (zh) * | 2012-11-23 | 2014-09-24 | 贵州安大航空锻造有限责任公司 | 轴承钢闪光焊薄壁环件的型材弯曲制坯方法 |
CN102941266B (zh) * | 2012-11-23 | 2014-12-17 | 贵州安大航空锻造有限责任公司 | 不锈钢闪光焊薄壁环件的型材弯曲制坯方法 |
CN102941258B (zh) * | 2012-11-23 | 2014-12-17 | 贵州安大航空锻造有限责任公司 | 铁基高温合金闪光焊薄壁环件的型材弯曲制坯方法 |
CN102941263B (zh) * | 2012-11-23 | 2014-12-17 | 贵州安大航空锻造有限责任公司 | 镍基高温合金闪光焊薄壁环件的型材弯曲制坯方法 |
CN104998939B (zh) * | 2015-08-28 | 2017-03-22 | 重庆五洲龙新能源汽车有限公司 | 一种型材弯弧装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH572200A5 (fr) * | 1973-09-18 | 1976-01-30 | Haeusler Christian Ag | |
DE3542943A1 (de) * | 1985-12-04 | 1987-06-11 | Cornelis Leemhuis | Vorrichtung zum bestimmen des winkels zwischen zwei relativ zueinander verschwenkbaren ebenen bzw. flaechenteilen |
DE29718648U1 (de) * | 1997-10-21 | 1997-12-11 | Franz Thoman Maschinenbau, 79206 Breisach | Biegemaschine zum Biegen von stangenförmigem Material |
JP3267931B2 (ja) * | 1998-05-14 | 2002-03-25 | 宋 炳 俊 | 折曲機用角度測定装置 |
-
2003
- 2003-03-04 EP EP20030004720 patent/EP1342514B1/fr not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008052474A1 (de) * | 2008-10-20 | 2010-04-22 | Rasi Maschinenbau Gmbh | Verfahren zum maschinellen Biegen von Stäben, insbesondere von Rohren |
Also Published As
Publication number | Publication date |
---|---|
EP1342514A3 (fr) | 2004-03-24 |
EP1342514A2 (fr) | 2003-09-10 |
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