DE102007018927A1 - Non-cutting separating method, especially for separating metal pipes or closed and open profiles, entails applying action of forming punch or die along notch point introduced beforehand in preferably still flat, undeformed strip material - Google Patents

Non-cutting separating method, especially for separating metal pipes or closed and open profiles, entails applying action of forming punch or die along notch point introduced beforehand in preferably still flat, undeformed strip material Download PDF

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Publication number
DE102007018927A1
DE102007018927A1 DE102007018927A DE102007018927A DE102007018927A1 DE 102007018927 A1 DE102007018927 A1 DE 102007018927A1 DE 102007018927 A DE102007018927 A DE 102007018927A DE 102007018927 A DE102007018927 A DE 102007018927A DE 102007018927 A1 DE102007018927 A1 DE 102007018927A1
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Germany
Prior art keywords
separation
separation process
chipless
process according
strip material
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DE102007018927A
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German (de)
Inventor
Henning Schmidtke
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Westfalia Profiltechnik GmbH and Co KG
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Westfalia Profiltechnik GmbH and Co KG
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Priority to DE102007018927A priority Critical patent/DE102007018927A1/en
Publication of DE102007018927A1 publication Critical patent/DE102007018927A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/002—Precutting and tensioning or breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/04—Severing by squeezing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B26D3/085—On sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely

Abstract

The non-cutting separating method, especially for separating metal pipes or closed and open profiles, entails applying the action of a forming punch (9) or die, orthogonally to the longitudinal axis of the profile, along a notch point which has been introduced beforehand in the preferably still flat, undeformed strip material, thereby creating a break. The notch point can be introduced on one side or on both sides of the preferably flat strip material.

Description

Die Erfindung betrifft ein Verfahren zum spanlosen Trennen von Rohren, offenen und geschlossenen Profilen.The Invention relates to a method for chipless cutting of pipes, open and closed profiles.

Im Automobil-, Möbel-, Sanitärbereich sowie in der Heizungs- und Kälteindustrie werden Rohr- und Profilabschnitte in unterschiedlichen Längen benötigt. Die Trennstellen der Rohr- und Profilabschnitte sollen möglichst deformationsarm und gratfrei ausgeführt sein.in the Automotive, furniture, plumbing and in the Heating and cooling industry become pipe and profile sections needed in different lengths. The separation points The pipe and profile sections should be as low in deformation as possible and burr-free.

Hierbei kommen unterschiedliche Werkstoffe zum Einsatz, welche vorzugsweise durch ein Walzprofilierverfahren in die jeweilige Endgeometrie über mehrere Verformungsschritte umgeformt werden.in this connection Different materials are used, which are preferred by a Walzprofilierverfahren in the respective final geometry over several Deformation steps are reshaped.

Während des Walzprofilierverfahrens ist es möglich Lochbilder, Verprägungen und Anarbeitungen in das unverformte Bandmaterial einzubringen. Rohre und geschlossene Profile werden durch umformtechnische Verfahren wie beispielsweise Clinchen und Falzen oder durch entsprechende Schweißverfahren wie beispielsweise Laser- oder Hochfrequenzschweißen entlang ihrer Längskanten miteinander gefügt. Die verwendeten Materialien sind Stahl, Aluminium, Messing, Edelstahl und Kunststoff.While Walzprofilierverfahrens it is possible hole patterns, Stamping and processing in the undeformed strip material contribute. Tubes and closed profiles are made by forming technology Procedures such as clinching and folding or by appropriate welding process such as laser or high frequency welding along their longitudinal edges joined together. The used Materials are steel, aluminum, brass, stainless steel and plastic.

Üblicher Weise werden Rohre, offene und geschlossene Profile, durch spanende, stanzende und spanlos durchdringende Verfahren im Anschluss an das Walzprofilierverfahren getrennt.usual Way, pipes, open and closed profiles, by cutting, punching and non-cutting pervading procedures following the Roll forming process separated.

Hierbei sind die Rohre oder Profile durch das Walzprofilierverfahren bereits in ihrer Endgeometrie fertig hergestellt.in this connection the pipes or profiles are already by the Walzprofilierverfahren finished in their final geometry.

(Trennverfahren 1: „durch Sägen" (1)(Separation method 1: "by sawing" ( 1 )

Bei Rohren und Profilen ist das Absägen der Rohr- oder Profilabschnitte bekannt. Hierbei werden die eingespannten Profile (1) mit einem Sägeblatt (2) auf die jeweilige Länge abgetrennt. Die Sägeblattdicke bestimmt den entstehenden Trennschrott. Nachteilig beim Absägen ist insbesondere, dass Späne entfernt und zu entsorgen sind, sowie der an der Schnittfläche entstehende Grat anschließend aufwendig beseitigt werden muss.For pipes and profiles sawing the pipe or profile sections is known. Here, the clamped profiles ( 1 ) with a saw blade ( 2 ) separated to the respective length. The saw blade thickness determines the resulting separation scrap. The disadvantage of sawing off is, in particular, that chips are removed and disposed of, and the burr formed at the cut surface then has to be effortlessly removed.

Zusätzlich entstehen nicht unerhebliche Kosten hervorgerufen durch eine begrenzte Standzeit der Sägeblätter.additionally incur not inconsiderable costs caused by a limited Service life of the saw blades.

Trennverfahren 2: „durch Stanzoperation"Separation method 2: "by punching operation"

Hierbei ist das schrottlose Scherstanzen als auch das Trennen mit Trennschrott bekannt.in this connection is the scrap-free Scherstanzen as well as the separation with separating scrap known.

Bei offenen Profilen wird oftmals das Abscheren des Profilstranges bevorzugt. Hierbei werden Scherplatten (3 + 4) gegenläufig mechanisch zueinander bewegt und dadurch das Profil (1) abgeschert. Nachteilig bei diesem Trennverfahren sind die unvermeidbaren gegenläufigen Gratrichtungen. (2)For open profiles shearing of the profile strand is often preferred. Here are shear plates ( 3 + 4 ) moved in opposite directions mechanically to each other and thereby the profile ( 1 ) sheared off. A disadvantage of this separation process are the unavoidable opposing burrs. ( 2 )

Bei geschlossenen oder offenen Profilen werden je nach Geometrie durch einen Stanzprozess oftmals vor dem Walzprofilieren entsprechende Freiräume (5) eingebracht, die es ermöglichen anschließend nach dem Walzprofilierprozess über eine entsprechende Stanzoperation die Teile aus dem Profilstrang zu trennen. Der zuvor eingebrachte Freiraum dient zum Eintauchen eines Trennmessers (6). Hierbei entstehen Überschnittbereiche (7), die in vielen Fällen nicht erwünscht sind. Ebenfalls nachteilig ist die in Scheidrichtung nicht vermeidbare Gratbildung an den Trennstellen sowie der unvermeidbare Trennschrott der typischer Weise 2–5 mm beträgt. Die Trennzeit ist abhängig von dem jeweiligen Rohr- bzw. Profilquerschnitt. (3)With closed or open profiles, depending on the geometry, by means of a stamping process, corresponding free spaces are often created before roll-forming ( 5 ), which subsequently enable the parts to be separated from the profile strand after the roll forming process via a corresponding punching operation. The previously introduced free space serves to immerse a cutting knife ( 6 ). This creates overcut areas ( 7 ), which are undesirable in many cases. Another disadvantage is the unavoidable formation of burrs in the separation direction at the separation points and the unavoidable separation scrap typically 2-5 mm. The separation time depends on the respective pipe or profile cross section. ( 3 )

Trennverfahren 3:Separation method 3:

Bei runden geschlossenen Rohren wird oftmals ein spanloses Trennverfahren verwendet wobei Schneidrollen (7) oder Schneidmesser rotieren um die Rohrachse in die Rohrwandung eingedrückt werden. Die Schneidrollen (7) oder -messer haben typischer Weise einen Schneidwinkel (8) von ca. 15°–30° abhängig von dem zu trennenden Rohrmaterial. Hierbei wird eine Gratbildung an dem jeweiligen Rohrabschnitt im Außenbereich nahezu vollständig vermieden, im Innenbereich der Rohre entsteht ein geringer Schnittgrat. (4)
vgl. z. B. DE 100 53 863 C1 , DE 41 20 349 C1 , DE 44 32 601 A1 , DE 24 39 584 A1 In round closed tubes, a non-cutting separation process is often used where cutting rollers ( 7 ) or rotating cutting blades to be pressed around the tube axis in the pipe wall. The cutting rollers ( 7 ) or knives typically have a cutting angle ( 8th ) of about 15 ° -30 ° depending on the pipe material to be separated. Here, a burr formation on the respective pipe section in the outer area is almost completely avoided, in the inner region of the tubes creates a small burr. ( 4 )
see. z. B. DE 100 53 863 C1 . DE 41 20 349 C1 . DE 44 32 601 A1 . DE 24 39 584 A1

Der Erfindung liegt die Aufgabe zugrunde, ein Trennverfahren zu entwi ckeln, welches es ermöglicht Rohre, geschlossene und offene Profile nach dem Walzprofilieren auf die gewünschte Länge abzutrennen. Das Trennen soll spanlos erfolgen und es soll keinerlei Trennschrott entstehen. Dies unterstützt die Wirtschaftlichkeit des Verfahrens. Ferner soll besonderes Augenmerk auf der Gratfreiheit der Trennstellen, sowie auf einer extrem kurzen Trennzeit liegen.Of the Invention has for its object to develop a separation process which allows pipes, closed and open Separate profiles to the desired length after roll forming. The separation should be done without cutting and it should not be any scrap arise. This supports the economy of the Process. Furthermore, special attention should be paid to the burr-freedom the separation points, as well as on an extremely short separation time.

Gemäß der Erfindung wird die abzutrennende Teilelänge auf dem flachen Band beidseitig mittels eines Kerbstempels (9) oder einer Kerbwalze (13) in das vom Coil kommende Bandmaterial eingedrückt. (5) Hierbei wird das Material in diesem Bereich verjüngt und kaltverfestigt (10), ohne die Festigkeitsgrenze, die während des Walzprofilierverfahrens für den Weitertransport durch die Umformstufen erforderlich ist, zu unterschreiten. Die Materialverjüngung kann im Bedarfsfall entlang der Trennlinie unterschiedlich tief sein.According to the invention, the part length to be cut off on the flat band is fastened on both sides by means of a notched punch ( 9 ) or a notching roll ( 13 ) is pressed into the coil material coming from the coil. ( 5 ) Here, the material in this area is tapered and cold worked ( 10 ), without falling below the strength limit required for further transport through the forming steps during the roll forming process. The material rejuvenation If necessary, it can have different depths along the dividing line.

Die Kerbstelle (11) ist nach dem Walzprofilieren umlaufend über den gesamten Profilquerschnitt innen wie außen vorhanden. Die umlaufenden Einkerbungen innerhalb des Rohres oder Profils definieren somit den späteren Ort der Trennstelle (6).The notch position ( 11 ) is present after rolling profiling circumferentially over the entire profile cross-section inside and outside. The circumferential notches within the tube or profile thus define the later location of the separation point ( 6 ).

Mittels eines Trennaggregates wird diese vorbereitete Trennstelle mit einer entsprechenden von außen wirkenden Kraft beaufschlagt, was zum Abreißen des Restquerschnittes führt. Hierbei wird lediglich ein sehr kurzer Trennweg benötigt, was die Trennzeit auf ein Minimum begrenzt. Die Trennstelle ist anschließend im Inneren, sowie im Außenbereich des Rohres oder Profils grat- und deformationsfrei (12). Die umlaufende Fase schließt ein Verletzungsrisiko bei der Weiterverarbeitung des Rohr- oder Profilquerschnittes nahezu aus.By means of a separating unit, this prepared separation point is acted upon by a corresponding force acting from the outside, which leads to the tearing off of the remaining cross section. This only requires a very short separation path, which limits the separation time to a minimum. The separation point is then free of burrs and deformation inside and outside of the tube or profile ( 12 ). The circumferential chamfer almost eliminates a risk of injury in the further processing of the pipe or profile cross-section.

Durch die nicht scheidende Trenneinheit werden zusätzlich Instandhaltungskosten drastisch reduziert, da der Verschleiß des Trennaggregates zu vernachlässigen ist.By the non-departing separation unit will additional maintenance costs drastically reduced, as the wear of the separation unit is negligible.

Es zeigen:It demonstrate:

1 beispielhaft Trennverfahren Sägen 1 Exemplary separation method sawing

2 beispielhaft Trennverfahren Scheren 2 exemplary separation method scissors

3 beispielhaft Trennverfahren Stanzen mit Verschnitt 3 Exemplary separation process punching with waste

4 beispielhaft Trennverfahren Rohrtrennen mit Schneidrollen 4 Example of separation process Pipe cutting with cutting rollers

5 Kerbverfahren im flachen Band 5 Notching in the flat band

6 Kerbstellen und Profil- Rohrquerschnitt nach dem Trennen 6 Notching and profile tube cross-section after separation

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 10053863 C1 [0012] - DE 10053863 C1 [0012]
  • - DE 4120349 C1 [0012] - DE 4120349 C1 [0012]
  • - DE 4432601 A1 [0012] - DE 4432601 A1 [0012]
  • - DE 2439584 A1 [0012] - DE 2439584 A1 [0012]

Claims (11)

Spanloses Trennverfahren, insbesondere zum Trennen von metallischen Rohren, geschlossenen wie auch offenen Profilen, dadurch gekennzeichnet, dass entlang einer vorab, vorzugsweise im noch flachen, nicht vorgeformten Bandmaterial eingebrachten Kerbstelle, durch die orthogonal zur Profil-Längsachse eingebrachte Wirkbewegung eines Formstempels oder einer Formmatrize ein Abbrechen erzeugt wird.Chipless separation process, in particular for the separation of metallic pipes, closed as well as open profiles, characterized in that along a previously introduced, preferably in still flat, not preformed strip material notch, introduced by the orthogonal to the profile longitudinal axis introduced active movement of a forming die or a forming die Cancel is generated. Spanloses Trennverfahren, insbesondere zum Trennen von metallischen Rohren, geschlossenen wie auch offenen Profilen, dadurch gekennzeichnet, dass der konventionell in einem Arbeitshub durchgeführte Scherschneidprozess, bestehend aus Scheranteil und Bruchanteil derart modifiziert angewendet wird, dass Scheranteil und Bruchanteil in zwei physikalisch getrennten Bearbeitungseinheiten erzeugt wird und somit sowohl örtlich als auch zeitlich nacheinander erfolgt.Chipless separation process, in particular for separation metallic pipes, both closed and open profiles, characterized in that the conventional in a working stroke Shear cutting process carried out, consisting of shear rate and fractional fraction is applied modified such that shear ratio and fraction in two physically separate machining units is generated and thus both locally and temporally takes place successively. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Kerbstelle einseitig in das vorzugsweise flache Bandmaterial eingebracht wird.Chipless separation process according to claim 1, characterized in that the notch point on one side in the preferably flat strip material is introduced. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Kerbstelle beidseitig in das vorzugsweise flache Bandmaterial eingebracht wird, wobei die verbleibende Restdicke des Bandmaterials am Ort beider Einkerbungen vorzugsweise ihren minimalen Wert hat.Chipless separation process according to claim 1, characterized in that the notch point on both sides in the preferably flat strip material is introduced, wherein the remaining residual thickness the band material at the location of both notches preferably their has minimal value. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Rohre oder Profile gänzlich ohne Schneidabfall getrennt werden.Chipless separation process according to claim 1, characterized characterized in that the tubes or profiles entirely without Cutting waste to be separated. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass nach der Materialverjüngung in Abhängigkeit von der Materialgüte und Ausgangs-Blechdicke eine für die prozesssichere Weiterverarbeitung, vorzugsweise im Walzprofilieren, ausreichende Restdicke verbleibt.Chipless separation process according to claim 1, characterized characterized in that after the material rejuvenation in dependence of the material grade and starting sheet thickness one for the process-safe further processing, preferably in roll forming, sufficient residual thickness remains. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Abtrennen durch eine nicht schneidende Operation erfolgt.Chipless separation process according to claim 1, characterized characterized in that the separation by a non-cutting Operation is done. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Trennstellen frei von Deformationen und Gratbildung sind.Chipless separation process according to claim 1, characterized characterized in that the separation points free of deformations and Burr formation are. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Trennvorgang einen Arbeitshub benötigt, der im Allgemeinen durch den Betrag der Blechdicke gebildet wird und somit in einem extrem kurzen Zeittakt durchgeführt werden kann.Chipless separation process according to claim 1, characterized characterized in that the separation process requires a working stroke, which is generally formed by the amount of sheet thickness and thus performed in an extremely short time cycle can be. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Verschleiß der Trenneinheit auf ein Minimum reduziert wird.Chipless separation process according to claim 1, characterized characterized in that the wear of the separation unit on a minimum is reduced. Spanloses Trennverfahren nach Anspruch 1, dadurch gekennzeichnet, dass eine umlaufende Fase im Trennbereich eine gratfreie Trennstelle garantiert.Chipless separation process according to claim 1, characterized characterized in that a circumferential chamfer in the separation area a burr-free Separation point guaranteed.
DE102007018927A 2007-04-14 2007-04-14 Non-cutting separating method, especially for separating metal pipes or closed and open profiles, entails applying action of forming punch or die along notch point introduced beforehand in preferably still flat, undeformed strip material Ceased DE102007018927A1 (en)

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DE102007018927A DE102007018927A1 (en) 2007-04-14 2007-04-14 Non-cutting separating method, especially for separating metal pipes or closed and open profiles, entails applying action of forming punch or die along notch point introduced beforehand in preferably still flat, undeformed strip material

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146344A2 (en) 2015-03-19 2016-09-22 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Apparatus and method for producing coiled tubes
DE102015115456A1 (en) 2015-09-14 2017-03-16 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Processing method and device for line elements
CN111958256A (en) * 2020-08-22 2020-11-20 符华明 Intelligent cutting equipment for steel structure bridge pipe fitting
WO2023000004A2 (en) 2021-07-23 2023-01-26 Julius Blum Gmbh Method for producing at least one component element for a furniture fitting

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Publication number Priority date Publication date Assignee Title
US2222842A (en) * 1939-02-23 1940-11-26 Moulding Patents Inc Apparatus for producing weakened scored portions in strip material
DE2439584A1 (en) 1974-08-17 1976-02-26 Foell Remswerk Machine tool for pipe thread cutting - mobile head with support beam has braking system linking to working spindle
DE3136620A1 (en) * 1981-09-15 1983-03-31 Fa. J. Eberspächer, 7300 Esslingen Method for the separation of pipes formed from strip material
DE4120349C1 (en) 1991-06-19 1992-05-27 Abb Reaktor Gmbh, 6800 Mannheim, De Pipe cut=off mechanism with peripheral cutter wheels - whose support rotating in stationary housing, releasably fitted to retainer body
DE4432601A1 (en) 1994-09-13 1996-03-14 Franz Brambauer Pipe cutting machine
DE19641144A1 (en) * 1996-10-05 1998-04-16 Fischer Edelstahl Rohre Gmbh Method for manufacturing tubular component
DE10053863C1 (en) 2000-10-27 2002-02-07 Hans Ernst Weerth Pipe cutting assembly has clamping chucks for the feed and cut pipe sections, with a cutting roller moving around the pipe leaving a strap to be fractured by bending the cut length by its chuck

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222842A (en) * 1939-02-23 1940-11-26 Moulding Patents Inc Apparatus for producing weakened scored portions in strip material
DE2439584A1 (en) 1974-08-17 1976-02-26 Foell Remswerk Machine tool for pipe thread cutting - mobile head with support beam has braking system linking to working spindle
DE3136620A1 (en) * 1981-09-15 1983-03-31 Fa. J. Eberspächer, 7300 Esslingen Method for the separation of pipes formed from strip material
DE4120349C1 (en) 1991-06-19 1992-05-27 Abb Reaktor Gmbh, 6800 Mannheim, De Pipe cut=off mechanism with peripheral cutter wheels - whose support rotating in stationary housing, releasably fitted to retainer body
DE4432601A1 (en) 1994-09-13 1996-03-14 Franz Brambauer Pipe cutting machine
DE19641144A1 (en) * 1996-10-05 1998-04-16 Fischer Edelstahl Rohre Gmbh Method for manufacturing tubular component
DE10053863C1 (en) 2000-10-27 2002-02-07 Hans Ernst Weerth Pipe cutting assembly has clamping chucks for the feed and cut pipe sections, with a cutting roller moving around the pipe leaving a strap to be fractured by bending the cut length by its chuck

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146344A2 (en) 2015-03-19 2016-09-22 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Apparatus and method for producing coiled tubes
EP3228418A1 (en) 2015-03-19 2017-10-11 WESTFALIA Metallschlauchtechnik GmbH & Co. KG Device and method for the preparation of wound hoses
DE102015115456A1 (en) 2015-09-14 2017-03-16 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Processing method and device for line elements
CN111958256A (en) * 2020-08-22 2020-11-20 符华明 Intelligent cutting equipment for steel structure bridge pipe fitting
WO2023000004A2 (en) 2021-07-23 2023-01-26 Julius Blum Gmbh Method for producing at least one component element for a furniture fitting
AT525301A1 (en) * 2021-07-23 2023-02-15 Blum Gmbh Julius Process for producing at least one component for a furniture fitting

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