EP0414036B1 - Straightening machine for long material - Google Patents
Straightening machine for long material Download PDFInfo
- Publication number
- EP0414036B1 EP0414036B1 EP90115144A EP90115144A EP0414036B1 EP 0414036 B1 EP0414036 B1 EP 0414036B1 EP 90115144 A EP90115144 A EP 90115144A EP 90115144 A EP90115144 A EP 90115144A EP 0414036 B1 EP0414036 B1 EP 0414036B1
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- EP
- European Patent Office
- Prior art keywords
- straightening
- abutments
- stock
- section
- measuring
- 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.)
- Revoked
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Classifications
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
Definitions
- the invention relates to a bending leveler of the type corresponding to the preamble of claim 1.
- Bending straighteners for elongated straightening goods have long been known as straightening machines for rails.
- DE-PS 39 015 shows a bending straightening machine with four straightening dies acting from above, below, right and left, which are arranged between straightening abutments arranged on both sides of the straightening die.
- the section of the straightening good located between the straightening abutments can of course not be straightened completely, but will have deviations from the straightness, which can be pushed down into a predetermined tolerance field by corresponding repetition of the straightening process.
- the relevant section of the straightening good is therefore not ideally straight, but still has certain slight bends, which are, however, still permissible.
- the curvature of the section of the material to be straightened is detected by three measuring devices distributed over the length of this section. Measuring devices distributed over the length of the section of the target being machined do not notice a curvature of the target.
- a bending straightening machine in which the measuring devices are distributed over the length of the section being processed, and which is also the basis of the preamble of claim 1, is evident from DE-A 27 45 874.
- the target is held between peaks, i.e. it is of limited length and not what is meant by the term "elongated" here.
- the invention has for its object to provide a bending straightening machine for elongated straightening material, in which the straightening path between the straightening abutments is considerably shorter than the length of the straightening material, so that even curvatures of the straightening material can be detected or eliminated on a large scale.
- the "fourth" measuring device can be used to determine how the straightened material behaves outside of the straightening path after it has been advanced and a subsequent straightening section has been straightened. If it is found that the straightening of the preceding straightening section moves, as seen in the conveying direction, an already straightened part of the straightening goods located behind the straightening path out of the predetermined tolerance range, suitable measures can be taken.
- a fifth measuring device and possibly also further measuring devices may be assigned to the fourth outside the straightening path.
- the fourth measuring point and, if appropriate, further measuring points thus give the possibility of detecting the effect of the straightening on sections of the straightening material lying outside the straightening path.
- the bending straightening machine designated as a whole in FIG. 1 comprises a press stand 1 with a passage 2, through which the straightening material 10 can be conveyed in sections along its length.
- the straightening section 3 (FIG. 1) is determined by straightening abutments 5 and 6 which follow one another in the conveying direction 4 of the straightening good 10 and which are arranged in the press stand 1 at four in the same height of the straightening good by 90 ° in its circumferential direction.
- straightening plungers 8 which are also arranged in the same arrangement as the straightening abutments 5,6, four of them offset by 90 ° in the circumferential direction of the straightening material.
- Straightening material 10 is supported on the two opposing straightening abutments 5, 6 and bends between them. Which of the four straightening dies 8 is activated depends on the direction of the section of the straightening material 10 located in the straightening section 3, which deflection is shown by not shown in FIGS. 1 and 2 next to the straightening abutments 5, 6 and the straightening dies 8 arranged measuring devices T1, T2, T3 is detected.
- the bending straightening machine 100 is assigned a conveyor device 20, the actual length of which is measured according to the length of the straightening good 10.
- the conveyor 20 comprises a horizontal table 22 supported on supports 21, on which support rollers and two revolving chains 23 are arranged.
- the chains 23 are driven by a drive 29.
- the straightening good 10 is carried along the end face by means of an angle 24 fastened to the chain pair 23, 23.
- the drive 29 pushes the straightening goods 10 from left to right in the direction of the arrow 4 in sections determined by the size of the straightening section 3 according to FIG. 1.
- the form-fitting entrainment ensures an exact positioning of the straightening good 10 in the bending straightening machine 100.
- the height of the upper TRum of the chains 23 can be adjusted by shifting the supporting rollers 25 depending on the type of straightening material 10, so that this always passes centrally between the straightening abutments 5, 6 and the straightening dies 8.
- the links 28 of the rollers 25 can be pivoted by means of a screw spindle 27 actuated by a hand crank 26.
- a conveyor device 40 is provided on the outlet side of the bending straightening machine 100, which is designed corresponding to the conveyor device 20 and receives the already directed section of the conveyed material 10.
- Fig. 3 the essential elements of the bending straightener 100 are shown again schematically.
- the straightening section 3 is determined by the position of the straightening abutment 5, 6.
- the straightening dies 8 In between act the straightening dies 8.
- the measuring devices T 1, T 2, T 3 are arranged which scan the position of the outer boundary of the straightening good 10 and thereby determine its curvature between the straightening abutments 5, 6 allow.
- a fourth measuring device T4 is provided which allows the behavior of the straightening goods outside the straightening section 3 when straightening a preceding section of the straightening goods located in the straightening section 3.
- the signals of the measuring devices T1, T2, T3 and T4 are fed via lines 31, 32, 33, 34 to a computer 35 which forms signals for actuating the straightening stamp 8, which, via lines 41, 42, 43, 44, a pressure generator 45 are supplied, which forms hydraulic pressures for the actuation of the four piston / cylinder units 7 of the straightening plunger 8, which are passed on to the piston / cylinder units 7 via the lines 36, 37, 38, 39.
- the lines 37, 38 are provided for the piston / cylinder units 7, which are not visible in FIG. 3 and act perpendicular to the plane of the drawing.
- the pressures for the piston / cylinder units 7 are not determined solely by the conditions in the straightening section 3, that is, not only by the signals from the measuring devices T 1, T 2, T 3, but also by the signals outside the straightening section 3 fourth measuring device T4 are taken into account, which determine the effects of a straightening process in the straightening section 3 on a section of the straightening material 1o located outside the same.
- the distance in the longitudinal direction of the material 1o of the measuring device T4 from the measuring device T3 is in the embodiment substantially equal to the distance between the measuring devices T1 and T2 or T2 and T3 with each other.
- the measuring devices T1, T2, T3, T4 are, although this is not shown in the schematic representation of Fig. 3, in two levels, i.e. present in the exemplary embodiment in the vertical and in the horizontal plane, in order to be able to detect bends of the target 10 in all directions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Description
Die Erfindung bezieht sich auf eine Biegerichtmaschine der dem Oberbegriff des Anspruchs 1 entsprechenden Art.The invention relates to a bending leveler of the type corresponding to the preamble of claim 1.
Biegerichtmaschinen für langgestrecktes Richtgut sind als Richtmaschinen für Schienen seit langem bekannt. So zeigt die DE-PS 39 015 eine Biegerichtmaschine mit vier von oben, unten, rechts und links wirkenden Richtstempeln, die zwischen zu beiden Seiten der Richtstempel angeordneten Richtwiderlagern angeordnet sind.Bending straighteners for elongated straightening goods have long been known as straightening machines for rails. DE-PS 39 015 shows a bending straightening machine with four straightening dies acting from above, below, right and left, which are arranged between straightening abutments arranged on both sides of the straightening die.
Während es früher vornehmlich Schienen waren, ist es heute in einem erheblichen Umfang auch Profilmaterial in Gestalt von Walz- und Strangpreßprofilen der verschiedensten Art, welches einer Richtung bedarf.While it used to be primarily rails, today it is to a considerable extent also profile material in the form of rolled and extruded profiles of various types, which requires one direction.
Der zwischen den Richtwiderlagern befindliche Abschnitt des Richtguts kann natürlich nicht vollkommen gerichtet werden, sondern wird Abweichungen von der Geradlinigkeit aufweisen, die durch entsprechende Wiederholung des Richtvorganges in ein vorgegebenes Toleranzfeld hinabgedrückt werden können.The section of the straightening good located between the straightening abutments can of course not be straightened completely, but will have deviations from the straightness, which can be pushed down into a predetermined tolerance field by corresponding repetition of the straightening process.
Der betreffende Abschnitt des Richtgutes ist also nicht ideal gerade, sondern weist noch gewisse geringfügige Biegungen auf, die jedoch noch zulässig sind.The relevant section of the straightening good is therefore not ideally straight, but still has certain slight bends, which are, however, still permissible.
Auch wenn das Richtgut in dem betreffenden Abschnitt "gut" ist, weist es noch eine bestimmte Restkrümmung auf, die wenn sie in aufeinanderfolgenden Abschnitten stets in der gleichen Richtung verläuft, dazu führen kann, daß das Richtgut insgesamt gesehen krumm ist, obwohl der einzelne Richtabschnitt im zugelassenen Toleranzbereich liegt.Even if the target is "good" in the section in question, it still has a certain residual curvature which, if it always runs in the same direction in successive sections, can lead to the fact that the straightened material as a whole is crooked, even though the individual straightening section is within the permitted tolerance range.
Die Krümmung des gerade bearbeiteten Abschnittes des Richtgutes wird durch drei über die Länge dieses Abschnittes verteilte Meßeinrichtungen erfaßt. Eine Krümmung des Richtgutes "im großen" bekommen auf die Länge des gerade bearbeiteten Abschnittes des Richtgutes verteilte Meßeinrichtungen nicht mit.The curvature of the section of the material to be straightened is detected by three measuring devices distributed over the length of this section. Measuring devices distributed over the length of the section of the target being machined do not notice a curvature of the target.
Eine Biegerichtmaschine, bei der die Meßeinrichtungen über die Länge des gerade bearbeiteten Abschnittes verteilt sind und die im übrigen dem Oberbegriff des Anspruchs 1 zugrundeliegt, geht aus der DE-A 27 45 874 hervor. Hierbei wird das Richtgut jedoch zwischen Spitzen gehalten, d.h. es ist von beschränkter Länge und nicht das, was hier unter dem Ausdruck "langgestreckt" verstanden sein soll.A bending straightening machine, in which the measuring devices are distributed over the length of the section being processed, and which is also the basis of the preamble of claim 1, is evident from DE-A 27 45 874. Here, however, the target is held between peaks, i.e. it is of limited length and not what is meant by the term "elongated" here.
Der Erfindung liegt die Aufgabe zugrunde, eine Biegerichtmaschine für langgestrecktes Richtgut, bei der die Richtstrecke zwischen den Richtwiderlagern wesentlich kürzer als die Länge des Richtgutes ist, dahingehend auszugestalten, daß auch Krümmungen des Richtgutes im großen erfaßt bzw. ausgeschaltet werden können.The invention has for its object to provide a bending straightening machine for elongated straightening material, in which the straightening path between the straightening abutments is considerably shorter than the length of the straightening material, so that even curvatures of the straightening material can be detected or eliminated on a large scale.
Diese Aufgabe wird durch die in Anspruch 1 wiedergegebene Erfindung gelöst.This object is achieved by the invention reproduced in claim 1.
Durch die "vierte" Meßeinrichtung kann festgestellt werden, wie sich das Richtgut nach einem Vorschub und dem Richten eines nachfolgenden Richtgutabschnittes in der Richtstrecke außerhalb derselben verhält. Wird festgestellt, daß durch das Richten des vorangehenden Richtgutabschnittes sich ein, in Förderrichtung gesehen, hinter der Richtstrecke gelegener bereits gerichteter Teil des Richtgutes aus dem vorgegebenen Toleranzfeld herausbewegt, so können geeignete Maßnahmen getroffen werden.The "fourth" measuring device can be used to determine how the straightened material behaves outside of the straightening path after it has been advanced and a subsequent straightening section has been straightened. If it is found that the straightening of the preceding straightening section moves, as seen in the conveying direction, an already straightened part of the straightening goods located behind the straightening path out of the predetermined tolerance range, suitable measures can be taken.
Zur weiteren Präzisierung des Richtvorgangs kann es in manchen Fällen zweckmäßig sein, der vierten außerhalb der Richtstrecke eine fünfte Meßeinrichtung und gegebenenfalls auch noch weitere Meßeinrichtungen zuzuordnen. Die vierte Meßstelle und gegebenenfalls weitere Meßstellen geben also die Möglichkeit, die Einwirkung des Richtens auf außerhalb der Richtstrecke gelegene Abschnitte des Richtgutes zu erfassen.To further clarify the straightening process, it may be expedient in some cases to assign a fifth measuring device and possibly also further measuring devices to the fourth outside the straightening path. The fourth measuring point and, if appropriate, further measuring points thus give the possibility of detecting the effect of the straightening on sections of the straightening material lying outside the straightening path.
Dies kann insbesondere in der in Anspruch 2 wiedergegebenen Weise erfolgen, indem alle Meßeinrichtungen an einen Rechner angeschlossen werden.This can be done in particular in the manner set out in claim 2 by connecting all measuring devices to a computer.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.
- Fig. 1 ist eine Ansicht einer Biegerichtmaschine, an der die Erfindung Verwendung finden kann;
- Fig. 2 ist eine Ansicht nach der Linie II-II in Fig. 1;
- Fig. 3 ist eine vergrößerte schematische Wiedergabe der Richtstrecke, in der die vierte Meßeinrichtung erkennbar ist.
- Fig. 1 is a view of a bending leveler to which the invention can be applied;
- Fig. 2 is a view along the line II-II in Fig. 1;
- Fig. 3 is an enlarged schematic representation of the straightening path, in which the fourth measuring device can be seen.
Die in Fig. 1 als Ganzes mit 100 bezeichnete Biegerichtmaschine umfaßt einen Pressenständer 1 mit einem Durchlaß 2, durch den das Richtgut 10 der Länge nach abschnittweise hindurchförderbar ist.The bending straightening machine designated as a whole in FIG. 1 comprises a press stand 1 with a passage 2, through which the
Die Richtstrecke 3 (Fig. 1) ist durch in Förderrichtung 4 des Richtgutes 10 aufeinanderfolgende Richtwiderlager 5 bzw. 6 bestimmt, die zu je vieren in gleicher Höhe des Richtgutes um 90° in dessen Umfangsrichtung versetzt in dem Pressenständer 1 angeordnet sind.The straightening section 3 (FIG. 1) is determined by straightening
In der Mitte zwischen den Richtwiderlagern 5,6 sind durch hydraulische Kolben/Zylindereinheiten 7 betätigte Richtstempel 8 vorgesehen, die in gleicher Anordnung wie die Richtwiderlager 5,6 ebenfalls zu viert in Umfangsrichtung des Richtgutes um 90° versetzt vorgesehen sind. Bei einem Hub eines der Richtstempel 8 wird das Richtgut 10 an den beiden gegenüberliegenden Richtwiderlagern 5,6 abgestützt und biegt sich zwischen diesen durch. Welcher der vier Richtstempel 8 in Tätigkeit gesetzt wird, hängt von der Richtung des in der Richtstrecke 3 befindlichen Abschnittes des Richtgutes 10 vorhandenen Durchbiegung ab, die durch in den Fig. 1 und 2 nicht dargestellte dicht neben den Richtwiderlagern 5,6 und den Richtstempeln 8 angeordnete Meßeinrichtungen T₁,T₂,T₃ erfaßt wird.In the middle between the straightening
Der Biegerichtmaschine 100 ist eine Fördereinrichtung 20 zugeordnete, deren tatsächliche Länge sich nach der Länge des Richtgutes 10 bemißt. Die Fördereinrichtung 20 umfaßt einen auf Stützen 21 abgestützten horizontalen Tisch 22, auf welchem Auflagerollen und zwei umlaufende Ketten 23 angeordnet sind. Die Ketten 23 werden von einem Antrieb 29 angetrieben. Über einen an dem Kettenpaar 23,23 befestigten Winkel 24 wird das Richtgut 10 an der endseitigen Stirnfläche mitgenommen. Der Antrieb 29 schiebt das Richtgut 10 in durch die Größe der Richtstrecke 3 bestimmten Abschnitten gemäß Fig. 1 von links nach rechts im Sinne des Pfeiles 4 vor. Durch die formschlüssige Mitnahme ist eine exakte Positionierung des Richtgutes 10 in der Biegerichtmaschine 100 gewährleistet. Die Höhenlage des oberen TRums der Ketten 23 kann durch Verlagerung der unterstützenden Rollen 25 je nach Art des Richtgutes 10 eingestellt werden, damit dieses immer zentral zwischen den Richtwiderlagern 5,6 und den Richtstempeln 8 hindurchgeht. Die Lenker 28 der Rollen 25 können dazu mittels einer durch eine Handkurbel 26 betätigten Schraubspindel 27 verschwenkt werden.The
Auf der Auslaßseite der Biegerichtmaschine 100 ist eine Fördereinrichtung 40 vorgesehen, die entsprechend der Fördereinrichtung 20 ausgebildet ist und den bereits gerichteten Abschnitt des Fördergutes 10 aufnimmt.A
In Fig. 3 sind die wesentlichen Elemente der Biegerichtmaschine 100 noch einmal schematisch dargestellt. Die Richtstrecke 3 wird durch die Lage der Richtwiderlager 5,6 bestimmt. Dazwischen wirken die Richtstempel 8. Neben den Richtwiderlagern 5, den Richtstempeln 8 und den Richtwiderlagern 6 sind die Meßeinrichtungen T₁,T₂,T₃ angeordnet, die die Lage der äußeren Begrenzung des Richtgutes 10 abtasten und dadurch seine Krümmung zwischen den Richtwiderlagern 5,6 zu bestimmen gestatten.In Fig. 3, the essential elements of the
In Förderrichtung 4 des Richtgutes 1o hinter der letzten Meßeinrichtung T₃, also hinter der Richtstrecke 3, ist eine vierte Meßeinrichtung T₄ vorgesehen, die das Verhalten des Richtgutes außerhalb der Richtstrecke 3 beim Richten eines in der Richtstrecke 3 befindlichen vorangehenden Abschnittes des Richtgutes zu ermitteln gestattet. Die Signale der Meßeinrichtungen T₁,T₂,T₃ und T₄ werden über Leitungen 31,32,33,34 einem Rechner 35 zugeführt, der daraus zur Betätigung der Richtstempel 8 dienende Signale bildet, die über Leitungen 41,42,43,44 einem Druckerzeuger 45 zugeführt werden, der daraus hydraulische Drücke für die Betätigung der vier Kolben/Zylindereinheiten 7 der Richtstempel 8 formt, die über die Leitungen 36,37,38,39 an die Kolben/Zylindereinheiten 7 weitergeleitet werden. Die Leitungen 37,38 sind für die in Fig. 3 nicht sichtbaren senkrecht zur Zeichenebene wirkenden Kolben/Zylindereinheiten 7 vorgesehen.In the conveying direction 4 of the straightening material 1o behind the last measuring device T₃, that is to say behind the straightening section 3, a fourth measuring device T₄ is provided which allows the behavior of the straightening goods outside the straightening section 3 when straightening a preceding section of the straightening goods located in the straightening section 3. The signals of the measuring devices T₁, T₂, T₃ and T₄ are fed via
Das Wesentliche besteht darin, daß die Drücke für die Kolben/Zylindereinheiten 7 nicht durch die Verhältnisse in der Richtstrecke 3 allein bestimmt werden, also nicht nur durch die Signale der Meßeinrichtungen T₁,T₂,T₃, sondern daß auch die Signale der außerhalb der Richtstrecke 3 gelegenen vierten Meßeinrichtung T₄ Berücksichtigung finden, die die Auswirkungen eines Richtvorganges in der Richtstrecke 3 auf einen außerhalb derselben gelegenen Abschnitt des Richtgutes 1o feststellen.The essential thing is that the pressures for the piston / cylinder units 7 are not determined solely by the conditions in the straightening section 3, that is, not only by the signals from the measuring devices T 1, T 2, T 3, but also by the signals outside the straightening section 3 fourth measuring device T₄ are taken into account, which determine the effects of a straightening process in the straightening section 3 on a section of the straightening material 1o located outside the same.
Der Abstand in Längsrichtung des Richtgutes 1o der Meßeinrichtung T₄ von der Meßeinrichtung T₃ ist in dem Ausführungsbeispiel im wesentlichen gleich dem Abstand der Meßeinrichtungen T₁ und T₂ bzw. T₂ und T₃ untereinander.The distance in the longitudinal direction of the material 1o of the measuring device T₄ from the measuring device T₃ is in the embodiment substantially equal to the distance between the measuring devices T₁ and T₂ or T₂ and T₃ with each other.
Die Meßeinrichtungen T₁,T₂,T₃,T₄ sind, obwohl dies in der schematischen Darstellung der Fig. 3 nicht wiedergegeben ist, in zwei Ebenen, d.h. in dem Ausführungsbeispiel in der vertikalen und in der horizontalen Ebene vorhanden, um Biegungen des Richtgutes 10 in allen Richtungen erfassen zu können.The measuring devices T₁, T₂, T₃, T₄ are, although this is not shown in the schematic representation of Fig. 3, in two levels, i.e. present in the exemplary embodiment in the vertical and in the horizontal plane, in order to be able to detect bends of the
Claims (2)
- A bending type straightening machine for straightening elongate stock,
the machine comprising a press housing (1) through which the stock (10) can be guided lengthwise,
there being disposed in the press housing (1) straightening abutments (5, 6) which are spaced apart from one another lengthwise of the stock (10) and which define a straightening zone,
there being provided straightening rams (8) which are disposed between the straightening abutments (5, 6) in the press housing (1) and which act in the opposite direction to the straightening abutments (5, 6),
there being provided a conveyor (20) which conveys the stock (10) in portions through the housing (1),
measuring devices (T₁, T₂, T₃) being provided which are spaced apart from one another lengthwise of the stock (10), are adjacent the straightening abutments (5, 6) and straightening rams (8) and measure the displacement of the boundaries of the stock (10) in parallel directions,
characterised in that
a fourth measuring device (T₄) measuring in the same direction is disposed outside the straightening zone (3) and at a distance after, as considered in the direction (4) of conveyance, the last measuring device (T₃) and delivers a correction signal for additionally acting on the straightening operation. - A machine according to claim 1, characterised in that all the measuring devices (T₁, T₂, T₃, T₄) are connected to a computer (35).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3927465 | 1989-08-19 | ||
| DE3927465A DE3927465A1 (en) | 1989-08-19 | 1989-08-19 | BREADING MACHINE FOR LONG-EXTENDED ALIGNMENT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0414036A2 EP0414036A2 (en) | 1991-02-27 |
| EP0414036A3 EP0414036A3 (en) | 1991-04-10 |
| EP0414036B1 true EP0414036B1 (en) | 1993-06-09 |
Family
ID=6387472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90115144A Revoked EP0414036B1 (en) | 1989-08-19 | 1990-08-07 | Straightening machine for long material |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0414036B1 (en) |
| DE (2) | DE3927465A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563743A (en) * | 2016-11-02 | 2017-04-19 | 广东万丰摩轮有限公司 | Automatic correcting device for rim flatness |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4142499C2 (en) * | 1991-12-21 | 1995-04-06 | Heidelberger Druckmasch Ag | Process for straightening a workpiece |
| DE4410143C2 (en) * | 1994-03-24 | 1998-07-09 | Bracker Soehne Masch | Device for straightening a steel profile, in particular a rail |
| IT1319553B1 (en) * | 2000-12-15 | 2003-10-20 | Cesare Galdabini S P A | MACHINE AND PROCEDURE FOR STRAIGHTENING SMALL PIECES AND HIGH LENGTH |
| FR2873601B1 (en) * | 2004-07-29 | 2007-12-28 | D Equipement De Modernisation | MACHINE TO REDRESS THE FERS |
| FR2876925B1 (en) * | 2004-10-22 | 2008-05-30 | Geismar Ancien Ets L | PROCESS FOR LAMINATED METAL PROFILES |
| EP2331272B1 (en) * | 2008-08-25 | 2022-01-12 | Monteferro S.p.A. | Production line for lift guides and similar products and productive process for making thereof |
| CN102069111B (en) * | 2010-11-25 | 2013-04-24 | 武汉理工大学 | Horizontal adaptive mechanical precision straightening device for linear bars and method therefor |
| CN102728991B (en) * | 2012-07-05 | 2014-04-16 | 无锡鹰普精密铸造有限公司 | Semiautomatic reforming tool of casting piece |
| CN104998929B (en) * | 2014-04-22 | 2018-04-13 | 苏州市昌星模具机械有限公司 | Automatic reforming device |
| DE102016003772B4 (en) * | 2016-04-02 | 2020-02-27 | Msg Maschinenbau Gmbh | Device and method for measuring the straightness of a rod-shaped workpiece |
| CN112238163A (en) * | 2020-08-21 | 2021-01-19 | 泰安华鲁锻压机床有限公司 | Hydraulic press for correcting plate bending and twisting |
| CN112605174B (en) * | 2020-11-27 | 2022-10-14 | 中机试验装备股份有限公司 | Bidirectional split type straightening and top bending integrated mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE39015C (en) * | A. J. GUSTIN in Boston, County of Suffolk, State of Mass., V. St. A | Rail straightening machine | ||
| BE795550A (en) * | 1972-02-17 | 1973-06-18 | Siemens Ag | DEVICE FOR STRAIGHTENING TUBES |
| GB1426870A (en) * | 1972-05-18 | 1976-03-03 | Post Office | Appatus and method for straightening tubes |
| IT1078390B (en) * | 1977-01-21 | 1985-05-08 | Galdabini Renzo | AUTOMATIC STRAIGHTENING MACHINE |
-
1989
- 1989-08-19 DE DE3927465A patent/DE3927465A1/en not_active Withdrawn
-
1990
- 1990-08-07 DE DE9090115144T patent/DE59001683D1/en not_active Revoked
- 1990-08-07 EP EP90115144A patent/EP0414036B1/en not_active Revoked
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563743A (en) * | 2016-11-02 | 2017-04-19 | 广东万丰摩轮有限公司 | Automatic correcting device for rim flatness |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0414036A2 (en) | 1991-02-27 |
| DE3927465A1 (en) | 1991-02-21 |
| EP0414036A3 (en) | 1991-04-10 |
| DE59001683D1 (en) | 1993-07-15 |
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