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DE2538115A1 - Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array - Google Patents

Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array

Info

Publication number
DE2538115A1
DE2538115A1 DE19752538115 DE2538115A DE2538115A1 DE 2538115 A1 DE2538115 A1 DE 2538115A1 DE 19752538115 DE19752538115 DE 19752538115 DE 2538115 A DE2538115 A DE 2538115A DE 2538115 A1 DE2538115 A1 DE 2538115A1
Authority
DE
Germany
Prior art keywords
damping
weight
pipe
milling
during
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.)
Pending
Application number
DE19752538115
Other languages
German (de)
Inventor
Herbert Ing Grad Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19752538115 priority Critical patent/DE2538115A1/en
Publication of DE2538115A1 publication Critical patent/DE2538115A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12Making tubes or metal hoses with helically arranged seams
    • B21C37/127Tube treating or manipulating combined with or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/02Machines or devices for scraping
    • B23D79/021Machines or devices for scraping for removing welding, brazing or soldering burrs, e.g. flash, on pipes or rods
    • B23D79/023Machines or devices for scraping for removing welding, brazing or soldering burrs, e.g. flash, on pipes or rods internally

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The process is for damping milling cutter vibrations on helical seamed pipes during welding. During the neatening milling stage, which takes place after welding, a damping weight (12) is held by its own weight, with the pipe wall side turned away from the milling tool (11), thus eliminating any disturbance effect upon the seam welding process. The damping weight (12) is a conical roller, which rolls on the pipe wall side opposite to the milling tool during the helical movement of the pipe production procedure. Its mass can be varied in order to attain a maximum damping effect. An articulated form of retention of the damping weight (12) is provided, which is adjustable in the pipe axis direction and is linked to the roller support for the pipe wall.

Description

Verfahren und Vorrichtung zum Dämpfen von Fräserschwingungen an Schraubennahtrohren Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Dänipfen von Fräserschwingungen an Schraubennahtrohren während des Schweißprozesses. Method and device for damping cutter vibrations on screw sutures The invention relates to a method and an apparatus for dipping Milling vibrations on screw seam pipes during the welding process.

Es ist bekannt, beim Herstellungsprozeß von Schraubennahtrohren nach Schweißung der ersten Naht, beispielsweise der Rohrinnennaht, die Rückseite dieser Naht, die Nahtwurzel, V-forniinachzufräsen, um eine einwandfreie Rohraußennaht zu erhalten. Während das Schweißen der Rohrinnennaht unmittelbar nach Zusammentreffen der beiden sich berührenden Bandkanten, etwa im tiefsten Punkt im Rohrinneren erfolgt, wird das V-förmige Nachfräsen eine Windung später, etwa am tiefsten Punkt am Rohräußeren, und das Schweißen der Rohraußennaht eine halbe Windung danach, oben auf dem Rohr durchgeführt. It is known in the manufacturing process of screw sutures according to Welding the first seam, for example the inner tube seam, the back of this The seam, the seam root, must be re-milled in a V-shape in order to create a flawless outer pipe seam obtain. During the welding of the inner pipe seam immediately after meeting of the two touching belt edges, approximately at the lowest point inside the pipe, If the V-shaped re-milling is one turn later, approximately at the lowest point on the outside of the pipe, and welding the outside seam of the pipe half a turn afterwards, on top of the pipe carried out.

Der Vorteil dieses Verfahrens wird aber durch den Nachteil wieder aufgehoben, bzw. man kann diese Art des Verfahrens oft nicht anwenden, weil die Eräserschwingungen sich zu sehr auf den Rohrkörper übertragen, es zum zweitweiligen Aufschaukeln von Schwingungen kommt und sich Risse in der sich im Erstarrungszustand befindlichen Schweißnaht einstellen. The advantage of this method is reflected by the disadvantage again repealed, or this type of procedure can often not be used because the Eraser vibrations are transmitted too much to the tubular body, it becomes a temporary one Vibrations build up and cracks appear in the solidified state adjust the weld seam.

Um diesen Nachteil zu beseitigen, sieht die Erfindung im Rohrinneren eine Dämpfungs-Masse vor, für den Fll, daß am RohrauEbnmantel gefräst wird, die dem Fräswerkzeug~geenUbersteht und somit während des Verfahrens des Fräsprozesses die unerwünschten Schwingungen so stark dämpft, daß diese nicht mehr nachteilig auf den Schweißprozeß einwirken können. In order to overcome this disadvantage, the invention looks inside the pipe a damping mass before, for the Fll that is milled on the RohrauEbnmantel, the protrudes beyond the milling tool and thus during the milling process the unwanted vibrations dampened so much that they are no longer disadvantageous can act on the welding process.

In Fig. 1 ist das erfindungsgemäße Verfahren nebst Vorrichtung dargestellt. In Fig. 1, the method according to the invention is shown together with the device.

Ein Stahlband 1, das in üblicher Weise durch untere Formungsrollen 2 und obere Formungsrollen 3, die sich an einem Rollenträger 4 abstützen, zu einem Schraubennahtrohr 5 geformt wird, wird beim ersten Zusammentreffen seiner linken Bandkante 6 und seiner rechten Bandkante 7 mittels Schweißeinrichtung 8 und dem durch diese geförderten Schweißdraht 9 durch Legen einer Innennaht 10 verschweißt. Nach einer weiteren Windung wird an der Rohrunterseite ein FrEswerkzeug 11 eingesetzt, das die Wurzel 12 der lnnennaht 10 nacbfräst. A steel belt 1, which in the usual way by lower forming rollers 2 and upper forming rollers 3, which are supported on a roller carrier 4, into one Screw suture tube 5 is formed, when it first meets its left Tape edge 6 and its right tape edge 7 by means of welding device 8 and the welded by this conveyed welding wire 9 by laying an inner seam 10. After another turn, the Underside of the pipe a milling tool 11 is used, which mills the root 12 of the inner seam 10.

Als eine mögliche Art der Dämpfung der Fräserschwingungen lagert erfindungsgemäß im Fkhrinneren ein Dämpfungsgewicht 12 als Rotationskörper dem Fräswerkzeug 11 gegenüber auf der Rohrinnenwandung und rollt gemäß dem Fortschritt der schraubenförmigen Rohrbewegung mit ab. Durch Hinzufagen oder Abnehmen von Gewichtsringen 13 kaan die Masse des Dämpfungsgewichtes 12 den Dämpfungserfordernissen angepaßt werden.According to the invention, there is storage as a possible type of damping of the cutter vibrations in the interior of the vehicle, a damping weight 12 as a rotating body opposite the milling tool 11 on the pipe inner wall and rolls according to the progress of the helical pipe movement with from. By adding or removing weight rings 13, the mass of the Damping weight 12 can be adapted to the damping requirements.

über ein Gelenk 14 kann das Dämpfungsgewicht 12 entsprechend dem Steigungswinkel des SchraubennahtverlauSestüber einen Schubkolben 15 in Achsrichtung, mit Hilfe eines Gelenkes 16 zwischen Schubkolben-HUlse 17 und Rollenträger 4 vertikal ausgerichtet werden.Via a joint 14, the damping weight 12 can be adjusted according to the angle of inclination of the screw seam run over a thrust piston 15 in the axial direction, with the help of a joint 16 between the thrust piston sleeve 17 and roller carrier 4 is vertically aligned will.

Fig. 2 ist die vergrößerte Derstellung eines Schnittbildes senkrecht zur Rohrinnennaht 10, wobei deutlich zu erkennen ist, wie zwischen dem Stoß der Bandkanten 6 und 7 die Wurzel 12 der Rohrinnennaht 10 mit ihren Verunreinigungen von Schlacke und Oxyden hindurchtritt.Fig. 2 is the enlarged representation of a sectional image perpendicular to the inner pipe seam 10, it can clearly be seen how between the butt of the Belt edges 6 and 7, the root 12 of the inner pipe seam 10 with its impurities of slag and oxides passes through.

Fig. 3 zeigt im vergrößerten Schnittbild das Fräswerkzeug 11 im Eingriff mit oberhalb angeordnetem Dämpfungsgewicht 12.3 shows the milling tool 11 in engagement in an enlarged sectional view with damping weight 12 arranged above.

Fig. 4 stellt den Zustand mit eingearbeiteter Fräsnut 18 im Augenblick des Schweißbeginnes der Rohraußennaht 19 dar. Schweißdraht 20, geführt durch SchweißdUse 21, befindet sich in Schweißposition auf der Rohroberseite.Fig. 4 shows the state with incorporated milling groove 18 at the moment of the start of welding of the pipe outer seam 19. Welding wire 20, passed through welding nozzle 21, is in the welding position on the upper side of the pipe.

Claims (4)

Patentansprüche :Patent claims: 1. Verfahren zum Dämpfen von Fräserschwingungen an an Schraubennahtrohren während des Schweißprozesses dadurch gekennzeichnet, daß wShrend des Nachfräsvorganges an der dem Fräswerkzeug abgekehrten Rohrwandseite ein durch Eigengewicht oder durch Anstelikraft die Rohrwandung fest berUhiendes Dämpfungsgewicht die Fräserschwingungen laufend dämpft, so daß keine schädliche Einwirkung auf den Nahtschweißprozeß mehr entsteht. 1. Procedure for damping cutter vibrations on screw seam pipes during the welding process, characterized in that during the re-milling process on the side of the pipe wall facing away from the milling tool, a damping weight that is firmly in contact with the pipe wall by its own weight or by pressure dampening the cutter vibrations continuously so that there is no more harmful effect on the seam welding process. 2. Anspruch 1. dadurch gekennzeichnet, daß das Dämpfungsgewicht als Rotationskörper ausgebildet, sich beim Schraubvorgang des Rchrherstellungsprozesses auf der dem Fräswerkzeug abgekehrten Rohrwsandseite ständig abwälzt. 2. Claim 1. characterized in that the damping weight is designed as a body of rotation, constantly rolling on the side facing away from the milling tool during the screwing operation of the Rchrherstellungsprozesses Rohrwsandseite. 3. Anspruch -1. bis 2. dadurch gekennzeiclnet, daß die Masse des Dämpfungsgewichtes verrndert werden kann, um eine optimale Dämpfung zu erreichen. 3. Claim -1. to 2. characterized in that the mass of the damping weight can be changed in order to achieve optimal damping. 4. (Anspruch 1. S 3. dadurch gekennzeichnet, daß die Halterung des Dämpfungsgewichtes gelenkig ausgebildet, in Rohrachsrichtung verstellbar und an dem Rollenträger angekuppelt ist. L e e r s e i t e4. (claim 1. S 3. characterized in that the holder of the damping weight is articulated, adjustable in the direction of the tube axis and is coupled to the roller carrier. L eerseite
DE19752538115 1975-08-27 1975-08-27 Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array Pending DE2538115A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752538115 DE2538115A1 (en) 1975-08-27 1975-08-27 Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752538115 DE2538115A1 (en) 1975-08-27 1975-08-27 Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array

Publications (1)

Publication Number Publication Date
DE2538115A1 true DE2538115A1 (en) 1977-03-10

Family

ID=5954955

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752538115 Pending DE2538115A1 (en) 1975-08-27 1975-08-27 Helical seam welded pipe milling vibration damper - is conical roller with variable mass, linked to pipe support roller array

Country Status (1)

Country Link
DE (1) DE2538115A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035239A2 (en) * 2002-10-18 2004-04-29 Spiro S.A. Assembly for cutting a tube
US6874398B2 (en) 2002-10-18 2005-04-05 Spiro Sa Assembly for cutting a tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004035239A2 (en) * 2002-10-18 2004-04-29 Spiro S.A. Assembly for cutting a tube
WO2004035239A3 (en) * 2002-10-18 2004-07-01 Spiro Sa Assembly for cutting a tube
US6874398B2 (en) 2002-10-18 2005-04-05 Spiro Sa Assembly for cutting a tube

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