EP1829626B1 - Straightener - Google Patents
Straightener Download PDFInfo
- Publication number
- EP1829626B1 EP1829626B1 EP07003697A EP07003697A EP1829626B1 EP 1829626 B1 EP1829626 B1 EP 1829626B1 EP 07003697 A EP07003697 A EP 07003697A EP 07003697 A EP07003697 A EP 07003697A EP 1829626 B1 EP1829626 B1 EP 1829626B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- straightening
- workpiece
- cylinders
- offset
- rams
- 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.)
- Not-in-force
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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
- 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 preferably hydraulically or pneumatically acting straightening machine with a receiving device for an elongated workpiece to be straightened, such as solid, hollow profile or tube, and an array of straightening tools with straightening cylinder and straightening die attached thereto.
- the DE 94 01 813 U1 which forms the basis for the preamble of claim 1, shows a straightening machine for elongated work sticks, with which a longitudinal straightening is done by straight bending of the workpiece.
- adjustable bending tools are arranged between two offset along the longitudinal axis of the workpiece lateral stops, wherein a plurality of bending tools axially spatially offset in the circumferential direction, are provided which cooperate with associated axially offset contact surfaces for straight bending of the workpiece.
- the FR 737.123 A shows a longitudinal straightening machine, wherein the elongated tools are deformed in the warm, especially red glowing state.
- computational bending tools lie opposite each other, wherein jaw-like sections on one side of the workpiece in the transverse direction to the longitudinal axis opposite free spaces.
- Another straightening press is in the AT-PS 255 864 specified.
- An elongated workpiece, in particular rail, rod or tubular material is placed on a guide bed as a receiving device and can be moved thereon to make by means of straightening tools, which include a straightening and two abutments, a bending of the tool in the alignment required extent , In this case, the deflection of the material is limited by means of a protruding limiting member.
- One difficulty encountered with such straightening presses is a lack of straightening accuracy with flexible straightening capabilities and a lack of straightening speed.
- the DD 220 518 A1 shows a straightener for straightening long profiled steels, with which the straightening performance of the press should be increased and concave and convex bending of the straightening material to be eliminated without the straightening material must be turned or folded.
- two straightening cylinders are arranged vertically on the machine frame for straightening over the abscissa of the rail to be straightened and a straightening cylinder horizontally for straightening about the ordinate.
- On the piston rods of the straightening cylinder are pressure side straightening, which are opposite fixed straightening.
- a device for straightening a tube is shown with an expander device disposed inside the tube, with which a radially outward force is exerted on the tube wall, for which purpose a radially expandable expander head and at least one straightening saddle are provided, which at a desired position along the Longitudinal axis of the tube can be positioned.
- an insertable into the tube interior rod or tubular trained spar is provided, and the at least one saddle is adjustable along the longitudinal axis of the spar and slidable by means of bevels from the longitudinal axis of the spar radially outward.
- the invention has for its object to provide a straightening machine of the type mentioned, with the contour of an elongated tool with high accuracy and directional speed can be calibrated.
- uniformly arranged straightening cylinders with respective straightening the peripheral contour can be quickly and accurately directed, for example by impanding on the same inner diameter or the same outer diameter from tube to tube.
- the measures contribute that a control or regulating device is present, by means of which the straightening cylinders are controlled or regulated actuated.
- One design variant for a quick straightening is that the straightening cylinders are axially offset in pairs with the straightening dies in the longitudinal direction of the workpiece.
- An accurate calibration is advantageously achieved in that four in the circumferential direction by 90 ° staggered straightening cylinder are available with straightening.
- the Fig. 1 schematically shows the arrangement of tools of a straightening machine for Rundricht relative to a workpiece in axial view, wherein a connection to a control device consists.
- Fig. 2 shows an embodiment of a straightening machine for Rundhouse with three axially at the same place, but circumferentially offset by 120 ° staggered Richtstkovn 21 (straightening shells), one of which fixed and the other two, each with associated cylinders 20 as in the embodiment according to Fig. 1 are adjustable.
- Fig. 1 is an elongated workpiece 1, in this case a tube or round hollow profile, mounted on a recording device, not shown, in the area between straightening tools, as essential parts a respective straightening cylinder 20 connected thereto via a carrier 23, transverse to the longitudinal axis of the workpiece 1 adjustable straightening shells 21 have.
- the straightening shells 1 can be attached to or with the carriers 23 exchangeably attached to the straightening cylinders 20.
- the straightening shells 21 are curved on their front side facing the workpiece 1 corresponding to the cross-sectional contour of the workpiece 1 and extend over a certain length in the longitudinal direction of the workpiece 1.
- the adjustment of the respective carrier 23 with the straightening bowl 21 attached thereto takes place e.g. hydraulically by means of a per se known piston-cylinder unit along an adjustment or control axis 22 transversely to the longitudinal axis of the workpiece 1.
- the straightening shells 21 can be moved individually or in dependence on each other, the operation can be controlled or controlled.
- Advantageous for accurate calibration is the operation with a control device 30, which takes place in coordination with the contour of the workpiece 1 by means of appropriate sensors and enables a high leveling accuracy at high straightening speed.
- a control device 30 which takes place in coordination with the contour of the workpiece 1 by means of appropriate sensors and enables a high leveling accuracy at high straightening speed.
- mechanical or optical equipment or electrical or magnetic measuring devices come into consideration.
- the straightening cylinder 20 can judge with the straightening shells 21, the pipe up to its example circular contour.
- the adjustment of the straightening shells 21 takes place by means of the straightening cylinder 20 in each case radially with respect to the workpiece.
- the calibration is done in terms of diameter and / or ovality.
- the workpieces or profiles can be calibrated cold or warm (up to the normalization temperature). It is also possible to upsize the material beyond the yield point.
- an absolute position is specified or predetermined.
- An advantageous embodiment consists in that the position can be predetermined or calculated on the basis of sensor data of the sensor system and the straightening processes can be controlled or regulated on the basis of this position data. Even with uneven or non-uniform wall thicknesses of pipes straightening by impanding can always be made on the same inner diameter or alternatively on the same outer diameter.
Abstract
Description
Die Erfindung bezieht sich auf eine vorzugsweise hydraulisch oder pneumatisch wirkende Richtmaschine mit einer Aufnahmevorrichtung für ein zu richtendes längserstrecktes Werkstück, wie Voll-, Hohlprofil oder Rohr, und einer Anordnung von Richtwerkzeugen mit Richtzylinder und daran angebrachtem Richtstempel.The invention relates to a preferably hydraulically or pneumatically acting straightening machine with a receiving device for an elongated workpiece to be straightened, such as solid, hollow profile or tube, and an array of straightening tools with straightening cylinder and straightening die attached thereto.
Die
Auch die
Eine weitere Richtpresse ist in der
Weitere ähnliche Richtpressen sind in der
Die
In der
Weitere Vorrichtungen zum Richten von Werkstoffen sind in der
Der Erfindung liegt die Aufgabe zugrunde, eine Richtmaschine der eingangs genannten Art bereitzustellen, mit der die Kontur eines längs erstreckten Werkzeugs mit hoher Genauigkeit und Richtgeschwindigkeit kalibriert werden kann.The invention has for its object to provide a straightening machine of the type mentioned, with the contour of an elongated tool with high accuracy and directional speed can be calibrated.
Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst.This object is achieved with the features of
Mit den in Umfangsrichtung versetzten und in axialer Richtung des längserstreckten Werkstücks, insbesondere Profils bzw. Rohres, ortsgleich angeordneten Richtzylindern mit jeweiligem Richtstempel kann die Umfangskontur schnell und genau gerichtet werden, beispielsweise durch Impandieren auf von Rohr zu Rohr gleichen Innendurchmesser oder gleichen Außendurchmesser.With the offset in the circumferential direction and in the axial direction of the elongate workpiece, in particular profile or tube, uniformly arranged straightening cylinders with respective straightening the peripheral contour can be quickly and accurately directed, for example by impanding on the same inner diameter or the same outer diameter from tube to tube.
Die Kalibrierung beispielsweise eines im Querschnitt runden oder ovalen Profils bzw. Rohres wird dabei dadurch begünstigt, dass die Richtstempel abschnittsweise entsprechend der Querschnittskontur der Werkstückoberfläche geformte Richtschalen tragen.The calibration of, for example, a profile or tube which is round or oval in cross-section is thereby facilitated by the directional punches carrying directional shells in sections corresponding to the cross-sectional contour of the workpiece surface.
Verbesserte Richtmöglichkeiten entlang des Umfangs ergeben sich dadurch, dass die Richtwerkzeuge mehr als zwei in Umfangsrichtung des Werkstückes versetzte Richtzylinder mit Richtstempel aufweisen.Improved straightening possibilities along the circumference result from the straightening tools having more than two straightening cylinders with straightening dies offset in the circumferential direction of the workpiece.
Zu einer genauen Justierung tragen die Maßnahmen bei, dass eine Steuerungs- oder Regelungsvorrichtung vorhanden ist, mittels deren die Richtzylinder gesteuert oder geregelt betätigbar sind.To a precise adjustment, the measures contribute that a control or regulating device is present, by means of which the straightening cylinders are controlled or regulated actuated.
Hierbei bestehen verschiedene Ausgestaltungsvarianten darin, dass die Betätigung der Richtzylinder in Abhängigkeit voneinander oder unabhängig voneinander erfolgt.In this case, various design variants exist in that the actuation of the straightening cylinder takes place as a function of one another or independently of one another.
Eine Ausgestaltungsvariante für ein schnelles Richten besteht darin, dass die Richtzylinder mit den Richtstempeln in Längsrichtung des Werkstückes paarweise axial versetzt sind.One design variant for a quick straightening is that the straightening cylinders are axially offset in pairs with the straightening dies in the longitudinal direction of the workpiece.
Eine genaue Kalibrierung wird vorteilhaft dadurch erreicht, dass vier in Umfangsrichtung um 90° gegeneinander versetzte Richtzylinder mit Richtstempel vorhanden sind.An accurate calibration is advantageously achieved in that four in the circumferential direction by 90 ° staggered straightening cylinder are available with straightening.
Weiterhin ist es möglich, mit zwei in Umfangsrichtung um 120° gegeneinander versetzten Richtzylindern mit Richtschalen und einer festen Richtschale ohne Richtzylinder die genaue Kalibrierung auszuführen.Furthermore, it is possible, with two circumferentially offset by 120 ° staggered directional cylinders with straightening cups and a fixed straightening shell without straightening perform the exact calibration.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert.The invention will be explained in more detail using an exemplary embodiment with reference to the drawings.
Die
Nach
Die Verstellung des jeweiligen Trägers 23 mit der daran angebrachten Richtschale 21 erfolgt z.B. hydraulisch mittels einer an sich bekannten Kolben-Zylinder-Einheit entlang einer Verstellachse bzw. Regelachse 22 quer zur Längsachse des Werkstückes 1. Die Richtschalen 21 können einzeln für sich oder in Abhängigkeit voneinander verfahren werden, wobei die Betätigung gesteuert oder geregelt vorgenommen werden kann. Vorteilhaft für eine genaue Kalibrierung ist jedoch die Betätigung mit einer Regelungsvorrichtung 30, die in Abstimmung auf die Kontur des Werkstückes 1 mittels entsprechender Sensorik erfolgt und eine hohe Richtgenauigkeit bei hoher Richtgeschwindigkeit ermöglicht. Für die Sensorik kommen mechanische oder optische Ausrüstungen oder elektrische oder magnetische Messvorrichtungen in Betracht.The adjustment of the
Über die Regelachsen 22 können die Richtzylinder 20 mit den Richtschalen 21 das Rohr bis zu dessen z.B. kreisrunder Kontur richten. Bei Werkstücken 1 mit rundem Querschnitt erfolgt die Verstellung der Richtschalen 21 mittels der Richtzylinder 20 jeweils radial bezüglich des Werkstückes. Die Kalibrierung erfolgt bezüglich des Durchmessers und/oder der Ovalität. Die Werkstücke bzw. Profile können kalt oder warm (bis zur Normalisierungstemperatur) kalibriert werden. Auch ein Stauchen des Werkstoffes über die Streckgrenze hinaus ist möglich.About the
Für die Steuerung oder Regelung ist in der Vorrichtung eine absolute Position vorgegeben oder vorgebbar. Eine vorteilhafte Ausbildung besteht darin, dass die Position aufgrund von Sensordaten der Sensorik vorgebbar bzw. berechenbar ist und auf Basis dieser Positionsdaten die Richtvorgänge steuerbar oder regelbar sind. Auch bei ungleichen oder uneinheitlichen Wandstärken von Rohren kann dabei ein Richten durch Impandieren stets auf gleichen Innendurchmesser oder alternativ auf gleichen Außendurchmesser vorgenommen werden.For the control or regulation in the device an absolute position is specified or predetermined. An advantageous embodiment consists in that the position can be predetermined or calculated on the basis of sensor data of the sensor system and the straightening processes can be controlled or regulated on the basis of this position data. Even with uneven or non-uniform wall thicknesses of pipes straightening by impanding can always be made on the same inner diameter or alternatively on the same outer diameter.
Aufgrund der mehrschaligen Segmente bzw. Richtschalen 21 wird in kurzer Zeit eine hohe Richtgenauigkeit erzielt, wobei örtliche Unrundheiten ausgeglichen werden. Dadurch lassen sich Rohre, Voll- und Hohlprofile mit hohen Toleranzanforderungen herstellen. Das Stauchen des Werkstoffes ermöglicht es, auch praktisch eine Nulltoleranz am Profilkörper zu gewährleisten. Weiterhin ist es auch möglich, mit dem angegebenen Aufbau die genannten Werkstücke mit den mehrschaligen Werkzeugen in andere als die Ausgangskontur umzuwandeln, z.B. von rund in eckig, wofür entsprechend geformte Richtschalen 21 angebracht werden.Due to the multi-layered segments or straightening shells 21 a high leveling accuracy is achieved in a short time, with local omissions are compensated. As a result, tubes, solid and hollow profiles can be produced with high tolerance requirements. The upsetting of the material makes it possible to ensure virtually zero tolerance on the profile body. Furthermore, it is also possible, with the specified construction, to convert the said workpieces with the multi-shell tools into other than the initial contour, e.g. from around in square, for which purpose shaped straightening
Claims (8)
- Straightener comprising a locating device for an elongated workpiece (1) to be straightened, in particular a pipe, and an arrangement of straightening tools with straightening cylinder (20) and straightening ram attached thereto, wherein the straightening tools have at least two straightening cylinders (20) with a respective straightening ram, and at least two straightening cylinders (20) offset in the circumferential direction are arranged with the straightening rams in an identical location in the direction of the workpiece longitudinal axis, and an open-loop-controlled or closed-loop-controlled adjustment of the straightening rams along an adjusting axis transversely to the longitudinal axis of the workpiece (1) is provided, characterized in that the straightening rams carry straightening shells (21) formed in sections in accordance with the cross-sectional contour of the workpiece surface, and in that the straightener is designed for straightening with respect to the circumferential contour of the workpiece (1) by upsetting.
- Straightener according to Claim 1, characterized in that the straightening tools have more than two straightening cylinders (20) with straightening ram which are offset in the circumferential direction of the workpiece (1).
- Straightener according to either of the preceding claims, characterized in that there is an open-loop or closed-loop control device, by means of which the straightening cylinders (20) can be actuated by open-loop or closed-loop control.
- Straightener according to Claim 3, characterized in that the straightening cylinders (20) are actuated in relationship to one another or independently of one another.
- Straightener according to one of the preceding claims, characterized in that the straightening cylinders (20) with the straightening rams are axially offset in pairs in the longitudinal direction of the workpiece (1).
- Straightener according to one of the preceding claims, characterized in that there are four straightening cylinders (20) with straightening ram offset by 90° from one another.
- Straightener according to one of the preceding claims, characterized in that there are at least two straightening systems offset in the longitudinal direction of the workpiece,saidstraighteningsystems consisting of straightening cylinders (20) with straightening rams attached thereto and associated straightening tools in the circumferential direction.
- Straightener according to one of the preceding claims, characterized in that there is at least one fixed straightening ram (40) with straightening shell (21), said straightening ram (40) being offset from the other straightening rams in the circumferential direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07003697T PL1829626T3 (en) | 2006-03-04 | 2007-02-23 | Straightener |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006010040A DE102006010040B3 (en) | 2006-03-04 | 2006-03-04 | straightener |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1829626A1 EP1829626A1 (en) | 2007-09-05 |
EP1829626B1 true EP1829626B1 (en) | 2009-02-04 |
Family
ID=38066555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07003697A Not-in-force EP1829626B1 (en) | 2006-03-04 | 2007-02-23 | Straightener |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1829626B1 (en) |
AT (1) | ATE422173T1 (en) |
DE (2) | DE102006010040B3 (en) |
DK (1) | DK1829626T3 (en) |
ES (1) | ES2321880T3 (en) |
PL (1) | PL1829626T3 (en) |
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US7981150B2 (en) | 2006-11-09 | 2011-07-19 | Boston Scientific Scimed, Inc. | Endoprosthesis with coatings |
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US8029554B2 (en) | 2007-11-02 | 2011-10-04 | Boston Scientific Scimed, Inc. | Stent with embedded material |
US8066763B2 (en) | 1998-04-11 | 2011-11-29 | Boston Scientific Scimed, Inc. | Drug-releasing stent with ceramic-containing layer |
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US8070797B2 (en) | 2007-03-01 | 2011-12-06 | Boston Scientific Scimed, Inc. | Medical device with a porous surface for delivery of a therapeutic agent |
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US11779983B1 (en) | 2021-07-20 | 2023-10-10 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Tube straightening tool and method of straightening a tube |
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DE202004009261U1 (en) * | 2004-06-14 | 2005-12-01 | MAE Maschinen- und Apparatebau Götzen GmbH & Co. KG | Method for automatically bending longitudinal workpieces comprises using a spacer measuring step with a spacer measuring device with slides |
-
2006
- 2006-03-04 DE DE102006010040A patent/DE102006010040B3/en not_active Expired - Fee Related
-
2007
- 2007-02-23 ES ES07003697T patent/ES2321880T3/en active Active
- 2007-02-23 AT AT07003697T patent/ATE422173T1/en active
- 2007-02-23 DK DK07003697T patent/DK1829626T3/en active
- 2007-02-23 EP EP07003697A patent/EP1829626B1/en not_active Not-in-force
- 2007-02-23 PL PL07003697T patent/PL1829626T3/en unknown
- 2007-02-23 DE DE502007000416T patent/DE502007000416D1/en active Active
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US8066763B2 (en) | 1998-04-11 | 2011-11-29 | Boston Scientific Scimed, Inc. | Drug-releasing stent with ceramic-containing layer |
US8574615B2 (en) | 2006-03-24 | 2013-11-05 | Boston Scientific Scimed, Inc. | Medical devices having nanoporous coatings for controlled therapeutic agent delivery |
US8187620B2 (en) | 2006-03-27 | 2012-05-29 | Boston Scientific Scimed, Inc. | Medical devices comprising a porous metal oxide or metal material and a polymer coating for delivering therapeutic agents |
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Also Published As
Publication number | Publication date |
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DE502007000416D1 (en) | 2009-03-19 |
PL1829626T3 (en) | 2009-07-31 |
ATE422173T1 (en) | 2009-02-15 |
DE102006010040B3 (en) | 2007-10-11 |
ES2321880T3 (en) | 2009-06-12 |
DK1829626T3 (en) | 2009-06-02 |
EP1829626A1 (en) | 2007-09-05 |
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