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 arrayInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture 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
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/127—Tube treating or manipulating combined with or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
- B23D79/02—Machines or devices for scraping
- B23D79/021—Machines or devices for scraping for removing welding, brazing or soldering burrs, e.g. flash, on pipes or rods
- B23D79/023—Machines 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
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)
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)
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 |
-
1975
- 1975-08-27 DE DE19752538115 patent/DE2538115A1/en active Pending
Cited By (3)
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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