DE562804C - Mandrel for bending pipes - Google Patents
Mandrel for bending pipesInfo
- Publication number
- DE562804C DE562804C DES99986D DES0099986D DE562804C DE 562804 C DE562804 C DE 562804C DE S99986 D DES99986 D DE S99986D DE S0099986 D DES0099986 D DE S0099986D DE 562804 C DE562804 C DE 562804C
- Authority
- DE
- Germany
- Prior art keywords
- mandrel
- curvature
- bending
- plates
- links
- 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.)
- Expired
Links
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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
- B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Gegenstand der Erfindung ist ein aus gelenkig miteinander verbundenen, bei beendigter Biegung aneinanderliegenden Gliedern bestehender Dorn zum Biegen von Rohren, weleher sich bekannten derartigen Dornen gegenüber dadurch vorteilhaft unterscheidet, daß die Glieder als Ringsektoren ausgebildet sind, deren Schnittebenen sich bei beendigter Biegung in der im Krümmungsmittelpunkt zur ι ο Krümmungsebene senkrechten Geraden schneiden. Durch diese Formgebung der Glieder wird erreicht, daß diese beim Biegen einen ununterbrochenen Ringmantel bilden und daher beim Biegen nur nach außen liegende Falten entstehen lassen.The invention relates to an articulated interconnected when finished Bending of adjacent links existing mandrel for bending pipes, weleher known thorns of this type differ advantageously in that the links are designed as ring sectors, the sectional planes of which are at the end of the bending Cut in the straight line perpendicular to the ι ο plane of curvature in the center of curvature. This shaping of the links ensures that they form an uninterrupted ring jacket when they are bent and therefore only fold outwardly lying folds when bending.
Diese Glieder sind durch Bolzen und mitThese links are bolted and with
Langlöchern versehene Platten verbunden, wobei die Platten durch um die Bolzen gelegte Rohre vor Verschiebung senkrecht zur Krüm-Plates provided with elongated holes are connected, the plates being put through around the bolts Pipes before displacement perpendicular to the bend
ao mungsebene geschützt sind.ao mation level are protected.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt; es zeigen:In the drawing, an embodiment of the invention is shown; show it:
Abb. ι einen Längsschnitt durch den Dorn in gestrecktem Zustande,Fig. Ι a longitudinal section through the mandrel in the stretched state,
»5 Abb. 2 eine Seitenansicht des Dorns im gebogenen Zustande,»5 Fig. 2 is a side view of the mandrel in bent state,
Abb. 3 einen Längsschnitt nach Linie A-B in Abb. 1,Fig. 3 is a longitudinal section along line AB in Fig. 1,
Abb. 4 eine schaubildliche Ansicht eines Dorngliedes in größerem Maßstabe undFig. 4 is a perspective view of a mandrel member on a larger scale and
Abb. 5 eine Ansicht einer Verbindungsplatte mit Langlöchern in größerem. Maßstabe. Fig. 5 is a larger view of a connecting plate with elongated holes. Scale.
Der Dorn besteht aus einer Anzahl von Gliedern 1, welche gelenkig miteinander verbunden sind. Gemäß der Erfindung sind die Glieder als Ringsektoren ausgebildet und so gelenkig miteinander verbunden, daß sich die Schnittebenen der Ringsektoren bei beendigter Biegung in der im Krümmungsmittelpunkt zur Krümmungsebene senkrechten Geraden schneiden. Durch jedes Glied r ist ein Bolzen 2- hindurchgeführt, welcher durch ein Langloch 3 von kettenartig aufeinanderliegenden Verbindungsplatten 4 im Innern des Gliedes ι. führt. Die Platten 4 sind je mit zwei Langlöchern 3 versehen, durch die die Bolzen 2 zweier nebeneinanderliegender Glieder ι hindurchgeführt sind. Um die Bolzen 2 gelegte Rohre 5 verhindern eine seitliche Ver- r0 Schiebung der Platten 4.The mandrel consists of a number of links 1 which are hingedly connected to one another. According to the invention, the links are designed as ring sectors and are connected to one another in an articulated manner such that the cutting planes of the ring sectors intersect in the straight line perpendicular to the plane of curvature at the center of curvature when the bending is completed. A bolt 2- is passed through each link r, which bolt ι through an elongated hole 3 of connecting plates 4 lying on top of one another in a chain-like manner in the interior of the link. leads. The plates 4 are each provided with two elongated holes 3 through which the bolts 2 of two adjacent members ι are passed. About the pins 2 down pipes 5 prevent lateral shifting of the plates encryption r 0. 4
Die Wirkungsweise ist folgende:
Der Dorn wird in das zu biegende Rohr gesteckt. Wenn das Rohr gebogen ist, nimmt
der Dorn die Lage der Abb. 2 ein. Die einzelnen Glieder 1 liegen hierbei satt aneinander,
so daß eine ununterbrochene Ringfläche gebildet ist. Beim Biegen des Rohres muß sich dieses dem Dorn anschmiegen, so daß in
der Rohrwandung nur nach außen gerichtete Falten gebildet werden können.The mode of action is as follows:
The mandrel is inserted into the pipe to be bent. When the tube is bent, the mandrel takes the position shown in Fig. 2. The individual links 1 lie close to one another, so that an uninterrupted ring surface is formed. When the pipe is bent, it must cling to the mandrel so that only outwardly directed folds can be formed in the pipe wall.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES99986D DE562804C (en) | Mandrel for bending pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES99986D DE562804C (en) | Mandrel for bending pipes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE562804C true DE562804C (en) | 1932-10-29 |
Family
ID=7522726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES99986D Expired DE562804C (en) | Mandrel for bending pipes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE562804C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528315A (en) * | 1945-05-15 | 1950-10-31 | Dresser Ind | Apparatus for forming tubular l's |
DE1036015B (en) * | 1953-11-04 | 1958-08-07 | Western Electric Co | Mandrel for internally supporting non-circular pipes when twisting |
EP1488866A2 (en) * | 2003-06-19 | 2004-12-22 | Kabushiki Kaisha Opton | Mandrel for bending |
WO2009135796A1 (en) * | 2008-05-06 | 2009-11-12 | Thyssenkrupp Steel Ag | Supporting core for producing hollow profiled elements |
CN103240311A (en) * | 2013-05-27 | 2013-08-14 | 倪慨宇 | Flexibility core rod for stretching hollow metal tube section bar to be bent |
-
0
- DE DES99986D patent/DE562804C/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528315A (en) * | 1945-05-15 | 1950-10-31 | Dresser Ind | Apparatus for forming tubular l's |
DE1036015B (en) * | 1953-11-04 | 1958-08-07 | Western Electric Co | Mandrel for internally supporting non-circular pipes when twisting |
EP1488866A2 (en) * | 2003-06-19 | 2004-12-22 | Kabushiki Kaisha Opton | Mandrel for bending |
EP1488866A3 (en) * | 2003-06-19 | 2005-11-23 | Kabushiki Kaisha Opton | Mandrel for bending |
US7219527B2 (en) | 2003-06-19 | 2007-05-22 | Kabushiki Kaisha Opton | Mandrel for bending |
WO2009135796A1 (en) * | 2008-05-06 | 2009-11-12 | Thyssenkrupp Steel Ag | Supporting core for producing hollow profiled elements |
CN102015141A (en) * | 2008-05-06 | 2011-04-13 | 蒂森克虏伯钢铁欧洲股份公司 | Supporting core for producing hollow profiled elements |
CN102015141B (en) * | 2008-05-06 | 2013-11-27 | 蒂森克虏伯钢铁欧洲股份公司 | Supporting core for producing hollow profiled elements |
US8881572B2 (en) | 2008-05-06 | 2014-11-11 | Thyssenkrupp Steel Europe Ag | Supporting core for producing hollow profiled elements |
CN103240311A (en) * | 2013-05-27 | 2013-08-14 | 倪慨宇 | Flexibility core rod for stretching hollow metal tube section bar to be bent |
CN103240311B (en) * | 2013-05-27 | 2015-06-17 | 倪慨宇 | Flexibility core rod for stretching hollow metal tube section bar to be bent |
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