EP1044078B1 - Pipe connection - Google Patents

Pipe connection Download PDF

Info

Publication number
EP1044078B1
EP1044078B1 EP98966970A EP98966970A EP1044078B1 EP 1044078 B1 EP1044078 B1 EP 1044078B1 EP 98966970 A EP98966970 A EP 98966970A EP 98966970 A EP98966970 A EP 98966970A EP 1044078 B1 EP1044078 B1 EP 1044078B1
Authority
EP
European Patent Office
Prior art keywords
tube
components
sinkers
set forth
longitudinal direction
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 - Lifetime
Application number
EP98966970A
Other languages
German (de)
French (fr)
Other versions
EP1044078A1 (en
Inventor
Stefan Krall
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.)
Saxonia Umformtechnik GmbH
Original Assignee
Saxonia Umformtechnik GmbH
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 Saxonia Umformtechnik GmbH filed Critical Saxonia Umformtechnik GmbH
Publication of EP1044078A1 publication Critical patent/EP1044078A1/en
Application granted granted Critical
Publication of EP1044078B1 publication Critical patent/EP1044078B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/14—Tube expanders with balls
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06—Sinkers
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/10—Needle beds

Definitions

  • the invention relates to a Method for connecting several side by side Components in the longitudinal direction with one another according to the preamble of claim 1.
  • Welding is rather uncommon because it is necessary Welding temperature distortion of the components can occur, and in particular also when welding the relative position of the components to each other change very easily can.
  • a disadvantage is that the weight of the Package is increased dramatically, especially when pouring into metal.
  • the Poured-in package is often ten times as heavy as the package without the casting material, especially if the components are very thin and small workpieces, such as the blanks of a knitting machine.
  • JP-A-2-205212 it is known from JP-A-2-205212 to expand by pushing through of an expanding dome, and this expanding mandrel directly along the Let the inner surface of the pipe to be expanded slide. The outside diameter the pipe is not in the area between the components expanded more than in the area of the culverts through these components.
  • the tube used for pushing through must be less precise as a dowel pin because there is no clearance between the outside diameter of the tube in the initial state and the inside diameter of the passage of the components the later movement play of the components within the package determines how at a dowel.
  • the individual components only have to be connected in the correct way Relative to each other.
  • the insertion of the Rohrs simply because there is enough play, approx. One to two hundredths of a millimeter, between the outside diameter of the tube and the inside diameter of the Passages may be present.
  • the connection with the Components are only completed by widening the pipe, and thus are themselves slight positional or dimensional deviations of the passages in the components hereby balanced. This simplifies and reduces the cost of manufacturing the individual components.
  • the pipe itself must also with respect to the Outside diameter and also the wall thickness only meet requirements that are clearly below the narrow tolerances of a dowel pin.
  • the wall thickness of the tube is between 0.1 and 0.4 mm
  • the diameter of the tube becomes relative with the size of the components change greatly.
  • a common diameter for components that have a height of approximately 10 to 20 mm is 3 mm.
  • the material is in the area of the components the tube no longer has any space due to the expansion within the passages find, and in the longitudinal direction in the adjacent areas, for example in the distance between the individual components, flow.
  • This flow of material results in the area between the components or between the passages of the components bulges of the Tube to the outside, which additionally a positive definition of Also effect components in the desired axial position on the pipe.
  • the components in the longitudinal direction along the pipe immediately one behind the other are preferably widenings on at least one of the end faces of the culvert are provided, which are necessary to expand into this into the pipe material which is displaced when the pipe is expanded leave, and thereby achieve a positive connection in the longitudinal direction.
  • components, which are not in one piece can be retrospectively welded, for example etc. from at least two components lying one behind the other in the longitudinal direction or circuit boards can only be used in one of the two for this purpose connected parts of the component the passages for connection with the Expanded tube can be dimensioned while in the other parts of the Part of the passages aligned, but chosen with a larger diameter be, the enlarged diameter in turn, the recording of the shifting pipe material when expanding.
  • Fig. 1 shows the package, which one behind the other in the viewing direction horizontal boards 1a and 1b and pipes connecting these boards 1a, 1b 3 exists.
  • tubes 3 parallel to each other through correspondingly aligned passages 2a, 2b, 2c of the circuit boards 1 a, 1 b pushed through, on which the boards 1a, 1b are stuck.
  • the three passages 2a, 2b, 2c and the tubes 3 pushed through them are located not on a line, but form a triangle.
  • 1 is a needle bed of a flat knitting machine.
  • the internal structure and cohesion of the package is better based on the figures 2 to 4 to recognize the state of the creation of the connection between the tube 3 on the one hand and the boards 1a, 1b, ... or 1, 1 'on the other hand in Show viewing direction X - X.
  • Fig. 2 consists of adjacent boards 1a, 1b, ..., which in Longitudinal direction 10 lie directly against each other.
  • Each board 1a, 1b, ... consists of two sub-boards 1, 1 ', the z. B. via spot welding, the welds 16 are connected to one another.
  • the sub-board 1 protrudes further upward, so that in a finished package the sub-boards 1 'together a guide for a represent component guided between, the groove bottom of this guide is formed by the sub-boards 1.
  • one of the boards consists of either three sub-boards 1, 1 ', 1, which are welded together, as at the left end of FIG. 2nd shown, or only from a single sub-board 1.
  • each of them is in the Sub-boards 1, 1 'passages 2, 2' are in an aligned position with each other, but with different sizes: While in z. B. the sub-boards 1 Passages 2 have a size; which is just a very minor game 17, for example 1 to 2/100 mm, larger than the outer diameter 4 of the tube 3 in the initial state, the passages 2 ', in contrast, in the circuit boards 1' significantly larger, and aligned, i.e. concentric, to the passages 2 in arranged the sub-boards 1, and in this relative position on the welding 16 connected together.
  • the outer diameter of the tube 3 and also the inner diameter of the Passages 2a, 2b, 2c have a round contour, but others can Contours can be used.
  • the tube 3 is connected to the boards 1a, 1b, ... by in A ball 7 is inserted into the tube 3 in the longitudinal direction 10 from one end face and is pushed completely through the tube, the outer diameter 9 is larger than the inner diameter 12 of the tube 3 in the initial state.
  • the ball 7 is pushed forward by means of a push rod 8 and the pipe 3 presses in the longitudinal direction 10 against a stop 18 on the end face, which, however, does not protrude into the interior of the tube 3.
  • a mechanical expansion of the tube 3 takes place, with a cold flow, thus a plastic deformation of the material of the tube 3 at almost Room temperature.
  • the material is in the area of the smaller passages 2 of the tube 3 is initially pushed out so far; until it reaches the inside circumference of the Passage 2 has reached. A further escape radially outwards is not possible, which is why the pipe material moves in the longitudinal direction 10 and to the larger passages 2 'is pressed, and then radially in the area moved outwards, thereby forming bulges 19, 19 'to the outside.
  • the larger passages 2 ' should be chosen so large that they Bulges 19 preferably the inner circumference of the larger recesses 2 ' no longer reach.
  • the material of the tube 3 substantially radially externally there is generally a reduction in the initial length La des Tube 3 to a length L which is about 0.5 to 2% shorter. Since the resulting length L represents the length of the package in the longitudinal direction 10 by the tubes 3 generally protrude from the front over the first and last circuit board 1, can thus be ensured that at a predetermined upper limit the Total length of the package this is complied with, provided that the starting length is La der Pipes 3, which is the same for all pipes in a package, the maximum length of the finished package is selected.
  • Fig. 3 shows - in the same direction as Fig. 2 - a package with another inner structure.
  • 3 consists of identical, each one-piece, circuit boards 1a, 1b, 1c, ... which are parallel at a certain distance 20 are arranged to each other.
  • the Boards 1a, 1b, 1c, ... pre-positioned at the correct distance from each other and then the pipe 3 is pushed through the passages 2, the passages 2 the smaller passages 2 in the circuit boards 1 of FIG. 2 in relation to Tube 3 correspond.
  • the expansion according to the prior art takes place here by means of an expansion mandrel 14, which is like the ball 7 is pushed in the longitudinal direction through the tube, and with it widest point expands the inner diameter of the tube 3, and thus also whose outer diameter is enlarged analogously to the procedure in FIG. 2.
  • an expanding mandrel 14 has the disadvantage that the Wear always in the same place, namely the widest point of the Expanding mandrel 14, which tapers towards the rear as it progresses, while with a ball 3 the wear is uniform over the entire Spherical surface takes place.
  • Fig. 4 shows a structure of a package in which the boards 1a, 1b, 1c immediately abut each other, but are each one-piece boards.
  • the passages 2 are usually produced as bores or punchings. To avoid the material of the tube 3 radially outwards The passages are to enable unevenly distributed over the axial length 2a, 2b, 2c, ... each from the end faces of the circuit boards 1a, 1b, 1c, with a Expansion 15 equipped in the form of a countersink of the borehole. This Widening can also only be present on one side of the board. Likewise, the expansion can only take place in certain angular ranges of the circumference of the culvert.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Prostheses (AREA)
  • Knitting Machines (AREA)
  • Tubes (AREA)
  • Combinations Of Printed Boards (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Earth Drilling (AREA)

Abstract

A packet of several adjacent, mostly flat, plate-like components fixed to one another is disclosed, as well as a process for producing the same in an easy and inexpensive manner, allowing the whole packet to be produced inexpensively and with adequate fit. A process for interconnecting into a packet (13) several adjacent components in the longitudinal direction (10), in particular plates (10), of which the main planes extend transversely to the longitudinal direction (10), is characterised in that at least one pipe (3) is pushed in the longitudinal direction (10) into at least one aligned passage (2) of the components, in particular plates (1a, 1b, 1c), the outer diameter (4) of the pipe (3) being only slightly smaller than the passage (2). The pipe (3) is then widened until the enlargement of the outer diameter (4) causes the components, in particular the plates (1a, 1b, 1c), to sit firmly on the pipe (3).

Description

Die Erfindung betrifft ein Verfahren zum Verbinden mehrerer nebeneinander liegender Bauteile in Längsrichtung miteinander gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a Method for connecting several side by side Components in the longitudinal direction with one another according to the preamble of claim 1.

In industriellen Anwendungen müssen häufig viele nebeneinander liegende, oft sehr dünne, plattenförmige Bauteile miteinander gehandhabt werden. z.B. bei dem Bett einer Strickmaschine. Zu diesem Zweck wird eine Vielzahl solcher Bauteile zu einem Paket miteinander verbunden, wodurch die Handhabung, insbesondere der Austausch, erheblich erleichtert werden. Dies ist besonders dann wichtig, wenn es sich bei den Bauteilen um Verschleißteile handelt, und dementsprechend ein Austausch relativ häufig vorgenommen werden muß. Eine Herstellung aus dem vollen Material, z.B. mittels Fräsen, ist besonders bei dünnen Bauteilen nicht mehr möglich bzw. nicht wirtschaftlich.In industrial applications, many often have to be side by side, often very thin, plate-shaped components are handled together. e.g. at the bed of a knitting machine. To this end, a variety of such Components connected to each other in a package, which makes handling, especially the exchange, can be made considerably easier. This is special important if the components are wearing parts, and accordingly, an exchange must be made relatively often. A Manufacture from the full material, e.g. using milling, is particularly useful for thin ones Components no longer possible or not economical.

Dabei sind bisher unterschiedliche Möglichkeiten bekannt, um diese Bauteile, die meist aus Metall, insbesondere einem kohlenstoffhaltigen härtbaren Stahl bestehen, miteinander zu verbinden.So far, different ways are known to these components that mostly made of metal, especially a carbon-containing hardenable steel exist to connect with each other.

Eher unüblich ist dabei das Verschweißen, da durch die notwendige Schweißtemperatur Verzug der Bauteile auftreten kann, und insbesondere auch beim Schweißen die Relativlage der Bauteile zueinander sich sehr leicht ändern kann. Welding is rather uncommon because it is necessary Welding temperature distortion of the components can occur, and in particular also when welding the relative position of the components to each other change very easily can.

Eine andere Möglichkeit besteht im Verkleben, was jedoch gerade bei Bauteilen mit nur geringer Kontaktfläche zueinander eine nur begrenzt belastbare Verbindung ergibt, und darüber hinaus bei einer großen Anzahl von Bauteilen pro Paket ebenfalls eine zeitaufwendige Methode ist.Another possibility is gluing, but this is particularly the case with components with only a small contact area to one another, only a limited load Connection results, and moreover with a large number of components per Package is also a time consuming method.

Es ist ferner bekannt, die Bauteile dadurch zu einem Paket zu verbinden, daß die Bauteile - z. B. an ihren freien Enden - in einen anderen Werkstoff eingegossen werden. Bei niedriger Anforderung an die Belastbarkeit kann das Eingießen in Kunststoff erfolgen, bei höherer Belastbarkeit in eine niedrigschmeizende Metall-Legierung, beispielsweise eine Bleilegierung, oder in Neusilber.It is also known to connect the components to form a package in that the Components - e.g. B. at its free ends - poured into another material become. If the load capacity is low, pouring in Plastic, with higher resilience in a low-melting metal alloy, for example a lead alloy, or in nickel silver.

Ein Nachteil besteht darin, daß durch das Eingußmaterial das Gewicht des Paketes drastisch erhöht wird, insbesondere beim Eingießen in Metall. Das eingegossene Paket ist dabei nicht selten zehnmal so schwer wie das Paket ohne das Eingußmaterial, gerade wenn es sich bei den Bauteilen um sehr dünne und kleine Werkstücke, wie etwa den Platinen einer Wirkmaschine, handelt.A disadvantage is that the weight of the Package is increased dramatically, especially when pouring into metal. The Poured-in package is often ten times as heavy as the package without the casting material, especially if the components are very thin and small workpieces, such as the blanks of a knitting machine.

Ein weiterer Nachteil besteht darin, daß das Eingießen vorzugsweise an den freien Enden der Bauteile geschehen muß, da ein Eingießen im mittleren Bereich sehr viel aufwendiger ist und zudem der Schwund des Vergussmateriales beim Abkühlen masslich berücksichtigt werden muss, was grosser Erfahrung bedarf. Gerade die freien Endbereiche der Bauteile dienen jedoch häufig als Funktionsflächen und müssen frei zugänglich sein.Another disadvantage is that the pouring preferably to the free ends of the components must happen, since a pouring in the middle is much more complex and also the shrinkage of the potting material when Cooling must be taken into account, which requires great experience. However, the free end areas of the components often serve as Functional areas and must be freely accessible.

Es ist weiterhin bekannt, die Bauteile auf Paßstifte aufzufädeln, indem in den Bauteilen miteinander fluchtende Bohrungen vorhanden sind, durch die die Paßstifte hindurchgeführt werden. Der gewünschte Abstand zwischen den einzelnen Bauteilen kann durch jeweils zwischengelegte Distanzhülsen erzielt werden.It is also known to thread the components on dowel pins by in the Components are aligned holes through which the Dowel pins are passed through. The desired distance between the individual components can be achieved by inserting spacer sleeves become.

Ein weiterer Nachteil besteht darin, daß die benötigten Paßstifte mit sehr geringen Maßtoleranzen gefertigt werden müssen und entsprechend teuer sind. Darüber hinaus ist das Anordnen von Distanzhülsen zwischen den Platinen beim Auffädeln schwierig und zeitaufwendig. Zudem ergibt sich dabei das Problem des Summenfehlers bei den Distanzhülsen.Another disadvantage is that the dowel pins required are very small Dimensional tolerances have to be manufactured and are correspondingly expensive. About that In addition, the placement of spacers between the boards when threading difficult and time consuming. In addition, there is the problem of Sum error in the spacer sleeves.

Weiterhin ist es bekannt, parallel zueinander liegende Bauteile zu verbinden mittels Auffädeln solcher Platinen auf ein Rohr, und anschließendes Aufweiten des Rohres, bis der Außendurchmesser des Rohres kraftschlüssig in den entsprechenden Durchlässen der Bauteile anliegt Derartiges ist insbesondere für die Herstellung von Wärmetauschern, beispielsweise aus DE-A-2 830 690 oder JP-A-59-156523 bekannt. Dabei wird ein am Ende einer Schub- bzw. Zugstange befestigtes Aufweitelement sowohl hindurchgeschoben als auch hindurchgezogen, und dabei zusätzlich nicht direkt entlang des aufzuweitenden Rohres bewegt, sondern entlang einer dazwischen angeordneten Zwischenhülse.Furthermore, it is known to connect components lying parallel to one another by threading such boards onto a tube, and then expanding the Tube until the outer diameter of the tube is non-positively in the Corresponding passages of the components rests. Such is particularly for the production of heat exchangers, for example from DE-A-2 830 690 or JP-A-59-156523 known. This will be at the end of a push or pull rod attached expansion element both pushed through and pulled through, and in addition not moving directly along the pipe to be expanded, but along an intermediate sleeve arranged between them.

Ferner ist es aus JP-A-2-205212 bekannt, das Aufweiten durch Hindurchschieben eines Aufweitdomes zu bewerkstelligen, und diesen Aufweitdorn direkt entlang der Innenfläche des aufzuweitenden Rohres gleiten zu lassen. Der Außendurchmesser des Rohres wird dabei im Bereich zwischen den Bauteilen nicht stärker aufgeweitet als im Bereich der Durchlässe durch diese Bauteile.Furthermore, it is known from JP-A-2-205212 to expand by pushing through of an expanding dome, and this expanding mandrel directly along the Let the inner surface of the pipe to be expanded slide. The outside diameter the pipe is not in the area between the components expanded more than in the area of the culverts through these components.

Aus der GB-A-312453 ist ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 bekannt, in dem ein Rohr durch fluchtende Bohrungen der Platinen hindurchgeschoben und anschließend aufgeweitet wird mit Hilfe eines durch das Rohr hindurchgeschobenen Aufweitdornes.From GB-A-312453 a method according to the preamble of claim 1 is known, in which a tube is pushed through aligned holes in the boards and is then expanded with the help of a through the tube pushed through expanding mandrel.

a) Technische Aufgabea) Technical task

Es ist daher die Aufgabe gemäß der vorliegenden Erfindung, ein Verfahren insbesondere zur Herstellung eines Paketes zu schaffen, wobei die Herstellung einfach, kostengünstig und reproduzierbar hinsichtlich der Vorspannkraft der Verbindung durchzuführen ist, insbesondere das ein Verschleißteil darstellende Aufweitelement kostengünstig und leicht auszutauschen sein soll und das herzustellende Paket eine Längsbeabstandung der einzelnen Bäuteile bzw. It is therefore the object according to the present invention, a To provide a method, in particular for the production of a package, the production being simple, inexpensive and reproducible with regard to the pretensioning force of the connection is to be carried out, in particular that which represents a wearing part Expanding element should be inexpensive and easy to replace and that package to be produced a longitudinal spacing of the individual building parts or

Platinen nicht nur durch Kraftschluß sondern zusätzlich durch Formschluß aufweist.Boards not only by friction locking but also by positive locking having.

b) Lösung der Aufgabeb) solving the problem

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.This object is solved by the features of claim 1. Advantageous embodiments result from the subclaims.

Dadurch, daß in die miteinander fluchtenden Durchlässe der Bauteile ein Rohr eingeschoben wird, und dieses Rohr anschließend so weit aufgeweitet wird, daß die einzelnen Bauteile fest auf dem Rohr sitzen, ergeben sich deutliche Vorteile gegenüber den bisherigen Befestigungsmethoden:Characterized in that a tube in the aligned passages of the components is inserted, and this tube is then expanded so far that the individual components sit firmly on the pipe, there are clear advantages compared to previous fastening methods:

Dabei muß das zum Hindurchschieben verwendete Rohr weniger paßgenau sein als ein Paßstift, da nicht das Spiel zwischen dem Außendurchmesser des Rohres im Ausgangszustand und dem Innendurchmesser des Durchlasses der Bauteile das spätere Bewegungsspiel der Bauteile innerhalb des Paketes bestimmt, wie bei einem Paßstift. The tube used for pushing through must be less precise as a dowel pin because there is no clearance between the outside diameter of the tube in the initial state and the inside diameter of the passage of the components the later movement play of the components within the package determines how at a dowel.

Vielmehr müssen die einzelnen Bauteile beim Verbinden lediglich in der richtigen Relativlage zueinander angeordnet werden. Zum einen ist das Einschieben des Rohrs einfach, da ausreichend Spiel, ca. ein bis zwei Hundertstel Millimeter, zwischen dem Außendurchmesser des Rohrs und dem Innendurchmesser des Durchlasses vorhanden sein darf. Zum anderen wird die Verbindung mit den Bauteilen erst durch das Aufweiten des Rohrs vollzogen, und somit werden selbst geringe Positions- oder Maßabweichungen der Durchlässe in den Bauteilen hierdurch ausgeglichen. Dies vereinfacht und verbilligt die Herstellung der einzelnen Bauteile. Darüber hinaus muß auch das Rohr selbst hinsichtlich des Außendurchmessers und auch der Wandstärke nur Anforderungen erfüllen, die deutlich unter den engen Toleranzen eines Paßstiftes liegen.Rather, the individual components only have to be connected in the correct way Relative to each other. On the one hand is the insertion of the Rohrs simply because there is enough play, approx. One to two hundredths of a millimeter, between the outside diameter of the tube and the inside diameter of the Passages may be present. On the other hand, the connection with the Components are only completed by widening the pipe, and thus are themselves slight positional or dimensional deviations of the passages in the components hereby balanced. This simplifies and reduces the cost of manufacturing the individual components. In addition, the pipe itself must also with respect to the Outside diameter and also the wall thickness only meet requirements that are clearly below the narrow tolerances of a dowel pin.

Beispielsweise beträgt die Wandstärke des Rohrs zwischen 0,1 und 0,4 mm, der Durchmesser des Rohrs wird sich dagegen mit der Größe der Bauteile relativ stark ändern. Ein üblicher Durchmesser für Bauteile, die eine Höhe von ca. 10 bis 20 mm aufweisen, ist 3 mm.For example, the wall thickness of the tube is between 0.1 and 0.4 mm The diameter of the tube, on the other hand, becomes relative with the size of the components change greatly. A common diameter for components that have a height of approximately 10 to 20 mm is 3 mm.

Während die einzelnen Bauteile meist aus einem kohlenstoffhaltigen, also einem härtbarem, bei der Verbindung jedoch ungehärteten, Stahl wie C80 oder C100 bestehen, wird für das Rohr meist ein Chromnickelstahl verwendet. While the individual components mostly consist of a carbon-containing one hardenable, but unhardened steel, such as C80 or C100 exist, a stainless steel is usually used for the pipe.

Nach der Erfinding erfolgt die Aufweitung, die vor allem auch über unterschiedlich lange Rohre und unter geringem Verschleiß der beteiligten Bauteile möglich ist, durch Hindurchschieben einer Posen Kugel in Längsrichtung durch das Innere des Rohres, wobei die Kugel einen Durchmesser hat, der größer ist als der Innendurchmesser des Rohrs. Die Kugel wird mechanisch mittels einer Schubstange vorwärtsgeschoben. Das Rohr selbst muß dabei in Gegenrichtung von einem Anschlag gehalten werden. Durch diese Aufweitung legt sich - im Bereich der engen Durchlässe durch die Bauteile - der sich erweiternde Außendurchmesser des Rohrs eng am Innenumfang des Durchlasses an. Bei sehr dünnen, instabilen Bauteilen kann dabei sogar ein begrenztes Ausbiegen dieser Bauteile aus ihrer Ebene heraus erfolgen, wobei dieses Ausbiegen jedoch aufgrund der Eigenelastizität des Bauteils dennoch in einem festen Sitz des Bauteils auf dem Äußendurchmesser des Rohrs resultiert.After the invention, the expansion takes place, which is above all about pipes of different lengths and with little wear on the part Components is possible by pushing through a float ball Longitudinal direction through the inside of the tube, the ball has a diameter that is larger than the inner diameter of the tube. The bullet becomes mechanical pushed forward with a push rod. The pipe itself must are held in the opposite direction by a stop. Through this Expansion wears off - in the area of the narrow passages through the components widening outer diameter of the tube close to the inner circumference of the Passages on. In the case of very thin, unstable components, even a limited bending of these components out of their plane, whereby however, this bending out due to the inherent elasticity of the component a tight fit of the component on the outer diameter of the tube results.

In der Regel und/oder zusätzlich wird jedoch im Bereich der Bauteile das Material des Rohrs aufgrund der Aufweitung innerhalb der Durchlässe keinen Platz mehr finden, und in Längsrichtung in die daneben befindlichen Bereiche, beispielsweise in den Abstandsbereich zwischen den einzelnen Bauteilen, fließen. Durch dieses Fließen des Materials ergeben sich im Bereich zwischen den Bauteilen bzw. zwischen den Durchlässen der Bauteile Ausbuchtungen des Rohrs nach außen, welche zusätzlich eine formschlüssige Festlegung der Bauteile auch in der gewünschten Axialposition auf dem Rohr bewirken.As a rule and / or in addition, however, the material is in the area of the components the tube no longer has any space due to the expansion within the passages find, and in the longitudinal direction in the adjacent areas, for example in the distance between the individual components, flow. This flow of material results in the area between the components or between the passages of the components bulges of the Tube to the outside, which additionally a positive definition of Also effect components in the desired axial position on the pipe.

Die Aufweitung in radialer Richtung führt gleichzeitig zu einer Verkürzung des Rohrs, die sich bei den beschriebenen Größenverhältnissen im Bereich von etwa 1 % der Ausgangslänge des Rohrs bewegt. Diese automatische Verkürzung tritt insbesondere auch beim Aufweiten mittels Hindurchschiebens einer Kugel auf und ist deshalb vorteilhaft, weil in vielen Anwendungsfällen das aus den miteinander verbundenen Bauteilen entstehende Paket eine bestimmte maximale Länge nicht überschreiten darf. Wenn man in einem solchen Fall als Ausgangslänge der Rohre, also vor dem Aufweiten, die Maximallänge des Pakets wählt, kann man sicher sein, daß das fertig erstellte Paket diese vorgegebene Maximalgrenze nicht überschreitet.The expansion in radial Direction simultaneously leads to a shortening of the tube, which is the case with the described Size ratios in the range of about 1% of the initial length of the Rohrs moves. This automatic shortening also occurs in particular Expanding by pushing a ball through and is therefore advantageous because in many applications this is made up of the interconnected components resulting package must not exceed a certain maximum length. If, in such a case, the starting length of the pipes, i.e. before the Expanding, choosing the maximum length of the package, you can be sure that completed package does not exceed this predetermined maximum limit.

Falls die Bauteile in Längsrichtung entlang des Rohrs unmittelbar hintereinander liegen, werden vorzugsweise Aufweitungen an wenigstens einer der Stirnseiten des Durchlasses vorgesehen werden, die notwendig sind, um in diese Aufweitung hinein das beim Aufweiten des Rohrs sich verlagernde Rohrmaterial fließen zu lassen, und dadurch einen Formschluß in Längsrichtung zu erzielen. Bei Bauteilen, die nicht einstückig, soridern beispielsweise nachträglich durch Verschweißen etc. aus in Längsrichtung wenigstens zwei hintereinanderliegenden Bauteilen oder Platinen bestehen, können zu diesem Zweck nur in einem der beiden miteinander verbundenen Teile des Bauteils die Durchlässe für die Verbindung mit dem aufgeweiteten Rohr dimensioniert werden, während in den anderen Teilen des Bauteils die Durchlässe zwar fluchtend, jedoch mit größerem Durchmesser gewählt werden, wobei der vergrößerte Durchmesser wiederum der Aufnahme des sich verlagernden Rohrmaterials beim Aufweiten dient.If the components in the longitudinal direction along the pipe immediately one behind the other are preferably widenings on at least one of the end faces of the culvert are provided, which are necessary to expand into this into the pipe material which is displaced when the pipe is expanded leave, and thereby achieve a positive connection in the longitudinal direction. For components, which are not in one piece, can be retrospectively welded, for example etc. from at least two components lying one behind the other in the longitudinal direction or circuit boards can only be used in one of the two for this purpose connected parts of the component the passages for connection with the Expanded tube can be dimensioned while in the other parts of the Part of the passages aligned, but chosen with a larger diameter be, the enlarged diameter in turn, the recording of the shifting pipe material when expanding.

c) Ausführungsbeispielec) working examples

Eine Ausführungsform gemäß der Erfindung ist nachfolgend anhand der Figuren beispielhaft näher beschrieben. Es zeigen:

Fig. 1
eine Ansicht eines durch das erfindungsgemäßen Verfahren hergestellten Paketes, betrachtet in Längsrichtung der Rohre 3,
Fig. 2
eine Schnittdarstellung des Paketes entlang der Linie X-X;
Fig. 3
einen anderen Aufbau des Paketes in gleicher Blickrichtung wie Fig. 2 mit einem Aufweitverfahren gemäß dem Stand der Technik und
Fig. 4
ein wiederum abgewandeltes Paket in Blickrichtung der Fig. 3, wobei das Aufweiten ebenfalls gemäß dem stand der Technik erfolgt.
An embodiment according to the invention is described in more detail below using the figures as an example. Show it:
Fig. 1
1 shows a view of a packet produced by the method according to the invention, viewed in the longitudinal direction of the tubes 3,
Fig. 2
a sectional view of the package along the line XX;
Fig. 3
another structure of the package in the same direction as FIG. 2 with an expansion method according to the prior art and
Fig. 4
a package which has been modified again in the direction of view of FIG. 3, the expansion likewise taking place in accordance with the prior art.

Fig. 1 zeigt das Paket, welches aus in Blickrichtung hintereinander liegenden Platinen 1a bzw. 1b besteht und diese Platinen 1a, 1b verbindenden Rohre 3 besteht. In dem Bereich, in dem sich die Platinen überdecken, sind drei Rohre 3 parallel zueinander durch entsprechend fluchtende Durchlässe 2a, 2b, 2c der Platinen 1 a, 1 b hindurchgeschoben, auf welchen die Platinen 1a, 1b festsitzen.Fig. 1 shows the package, which one behind the other in the viewing direction horizontal boards 1a and 1b and pipes connecting these boards 1a, 1b 3 exists. In the area where the boards overlap, there are three tubes 3 parallel to each other through correspondingly aligned passages 2a, 2b, 2c of the circuit boards 1 a, 1 b pushed through, on which the boards 1a, 1b are stuck.

Die drei Durchlässe 2a, 2b, 2c bzw. die darin hindurchgeschobenen Rohre 3 liegen nicht auf einer Linie, sondern bilden ein Dreieck. The three passages 2a, 2b, 2c and the tubes 3 pushed through them are located not on a line, but form a triangle.

Möglich wäre es auch, wenigstens eines der Rohre 3 durch einen solchen Durchlaß hindurchzuschieben, welcher sich in dem Bereich oberhalb der strichpunktierten Linie befindet, sich also ausschließlich durch die Platinen 1a hindurch erstreckt.It would also be possible to pass at least one of the tubes 3 through such a passage to push through, which is in the area above the dash-dotted line Line is, that is, only through the boards 1a extends.

Bei dem Paket der Fig. 1 handelt es sich um ein Nadelbett einer Flachstrickmaschine.1 is a needle bed of a flat knitting machine.

Der innere Aufbau und Zusammenhalt des Paketes ist besser anhand der Figuren 2 bis 4 zu erkennen, welche den Zustand der Erzeugung der Verbindung zwischen dem Rohr 3 einerseits und den Platinen 1a, 1b, ... bzw. 1, 1' andererseits in Blickrichtung X - X zeigen.The internal structure and cohesion of the package is better based on the figures 2 to 4 to recognize the state of the creation of the connection between the tube 3 on the one hand and the boards 1a, 1b, ... or 1, 1 'on the other hand in Show viewing direction X - X.

Fig. 2 besteht dabei aus nebeneinander liegenden Platinen 1a, 1b, ..., die in Längsrichtung 10 unmittelbar aneinander anliegen. Jede Platine 1a, 1b, ... besteht dabei aus zwei Teilplatinen 1, 1', die z. B. über eine Punktschweissung, die Verschweissungen 16, zu einer Einheit miteinander verbunden sind.Fig. 2 consists of adjacent boards 1a, 1b, ..., which in Longitudinal direction 10 lie directly against each other. Each board 1a, 1b, ... consists of two sub-boards 1, 1 ', the z. B. via spot welding, the welds 16 are connected to one another.

Gemäß der Darstellung in Fig. 1 ragt dabei die Teilplatine 1' weiter nach oben, so daß bei einem fertigen Paket die Teilplatinen 1' miteinander eine Führung für ein dazwischen geführtes Bauteil darstellen, wobei der Nutengrund dieser Führung durch die Teilplatinen 1 gebildet wird.According to the representation in Fig. 1, the sub-board 1 'protrudes further upward, so that in a finished package the sub-boards 1 'together a guide for a represent component guided between, the groove bottom of this guide is formed by the sub-boards 1.

Falls das Paket - wie in Fig. 2 dargestellt - stimseitig mit der gleichen Art von Teilplatine enden muß, besteht eine der Platinen entweder aus drei Teilplatinen 1, 1', 1, welche miteinander verschweißt sind, wie am linken Ende der Fig. 2 dargestellt, oder nur aus einer einzigen Teilplatine 1.If the package - as shown in Fig. 2 - with the same type of Sub-board must end, one of the boards consists of either three sub-boards 1, 1 ', 1, which are welded together, as at the left end of FIG. 2nd shown, or only from a single sub-board 1.

Bereits vor dem Verschweißen der Teilplatinen miteinander sind in jeder der Teilplatinen 1, 1' Durchlässe 2, 2' in fluchtender Position zueinander vorhanden, jedoch mit unterschiedlicher Größe: Während in z. B. den Teilplatinen 1 die Durchlässe 2 eine Größe aufweisen; die nur um ein sehr geringes Spiel 17, beispielsweise 1 bis 2/100 mm, größer ist als der Außendurchmesser 4 des Rohrs 3 im Ausgangszustand, die Durchlässe 2', die sich in den Platinen 1' demgegenüber deutlich größer, und fluchtend, also konzentrisch, zu den Durchlässen 2 in den Teilplatinen 1 angeordnet, und in dieser Relativlage über die Verschweissung 16 miteinander verbunden.Even before the sub-boards are welded together, each of them is in the Sub-boards 1, 1 'passages 2, 2' are in an aligned position with each other, but with different sizes: While in z. B. the sub-boards 1 Passages 2 have a size; which is just a very minor game 17, for example 1 to 2/100 mm, larger than the outer diameter 4 of the tube 3 in the initial state, the passages 2 ', in contrast, in the circuit boards 1' significantly larger, and aligned, i.e. concentric, to the passages 2 in arranged the sub-boards 1, and in this relative position on the welding 16 connected together.

Bei fluchtender Ausrichtung der kleineren Durchlässe 2 kann somit durch jeden Durchlaß 2 des gesamten Paketes, also gemäß Fig. 1 in diesem Fall durch drei Durchlässe 2a, 2b, 2c jeweils ein Rohr 3 hindurchgeschoben werden. Das Rohr 3 hat dabei eine bestimmte Ausgangslänge La, betrachtet in Längsrichtung 10, wie in Fig. 2 eingezeichnet.With aligned alignment of the smaller passages 2 can thus by anyone Passage 2 of the entire package, that is, according to FIG. 1 in this case by three Passages 2a, 2b, 2c are each pushed through a tube 3. The pipe 3 has a certain initial length La, viewed in the longitudinal direction 10, as drawn in Fig. 2.

Der Außendurchmesser des Rohrs 3 und ebenso der Innendurchmesser der Durchlässe 2a, 2b, 2c hat dabei eine runde Kontur, jedoch können auch andere Konturen verwendet werden.The outer diameter of the tube 3 and also the inner diameter of the Passages 2a, 2b, 2c have a round contour, but others can Contours can be used.

Anschließend wird das Rohr 3 mit den Platinen 1a, 1b, ... verbunden, indem in Längsrichtung 10 von einer Stirnseite her eine Kugel 7 in das Rohr 3 eingeführt und durch das Rohr vollständig hindurchgeschoben wird, deren Außendurchmesser 9 größer ist als der Innendurchmesser 12 des Rohrs 3 im Ausgangszustand. Die Kugel 7 wird mittels einer Schubstange 8 vorwärts geschoben und dabei drückt das Rohr 3 in Längsrichtung 10 stirnseitig gegen einen Anschlag 18, der jedoch nicht in das Innere des Rohrs 3 vorsteht.Then the tube 3 is connected to the boards 1a, 1b, ... by in A ball 7 is inserted into the tube 3 in the longitudinal direction 10 from one end face and is pushed completely through the tube, the outer diameter 9 is larger than the inner diameter 12 of the tube 3 in the initial state. The ball 7 is pushed forward by means of a push rod 8 and the pipe 3 presses in the longitudinal direction 10 against a stop 18 on the end face, which, however, does not protrude into the interior of the tube 3.

Dabei findet eine mechanische Aufweitung des Rohrs 3 statt, wobei ein Kaltfließen, also eine plastische Verformung des Materials des Rohrs 3 bei nahezu Raumtemperatur, erfolgt. Im Bereich der kleineren Durchlässe 2 wird das Material des Rohrs 3 zunächst so weit nach außen gedrückt; bis es den Innenumfang des Durchlasses 2 erreicht hat. Ein weiteres Ausweichen radial nach außen ist nicht möglich, weshalb das Rohrmaterial sich in Längsrichtung 10 bewegt und zu den größeren Durchlässen 2' hin gedrückt wird, und in deren Bereich sich dann radial nach außen bewegt, und dabei Aufwölbungen 19, 19' nach außen bildet. A mechanical expansion of the tube 3 takes place, with a cold flow, thus a plastic deformation of the material of the tube 3 at almost Room temperature. The material is in the area of the smaller passages 2 of the tube 3 is initially pushed out so far; until it reaches the inside circumference of the Passage 2 has reached. A further escape radially outwards is not possible, which is why the pipe material moves in the longitudinal direction 10 and to the larger passages 2 'is pressed, and then radially in the area moved outwards, thereby forming bulges 19, 19 'to the outside.

Die größeren Durchlässe 2' sollten dabei so groß gewählt sein, daß diese Aufwölbungen 19 möglichst den Innenumfang der größeren Ausnehmungen 2' nicht mehr erreichen.The larger passages 2 'should be chosen so large that they Bulges 19 preferably the inner circumference of the larger recesses 2 ' no longer reach.

Je nach Fließfähigkeit des Materials des Rohrs 3 werden sich dabei Aufwölbungen 19 ergeben, deren seitlicher Anstieg in den Flanken nur sehr flach verläuft, oder solche Aufwölbungen 19', deren seitliche Flanken relativ stark geneigt sind.Depending on the fluidity of the material of the tube 3, bulges will occur 19 result, the lateral rise in the flanks only very flat runs, or such bulges 19 ', the side flanks of which are relatively strong are inclined.

Während das radiale nach Außenpressen des Rohrmaterials im Bereich der kleinen Durchlässe 2 die entsprechenden Platinen 1 nur kraftschlüssig in axialer Richtung hält, bewirken die Aufwölbungen 19 dagegen eine formschlüssige axiale Festlegung der Platinen auf dem Außenumfang des Rohrs 3, wobei natürlich die Aufwölbungen 19' mit steileren Seitenflanken den besseren Formschluß bieten.While the radial after external pressing of the pipe material in the area of small passages 2, the corresponding plates 1 only non-positively in the axial Holds direction, the bulges 19, however, cause a positive axial Fix the boards on the outer circumference of the tube 3, which of course Bulges 19 'with steeper side flanks offer better interlocking.

Durch die Verlagerung des Materials des Rohrs 3 im wesentlichen radial nach außen tritt insgesamt in der Regel eine Verkürzung der Ausgangslänge La des Rohrs 3 auf einen um etwa 0,5 bis 2 % geringere Länge L ein. Da die resultierende Länge L die Länge des Pakets in Längsrichtung 10 darstellt, indem die Rohre 3 in der Regel stirnseitig über die erste und letzte Platine 1 vorstehen, kann damit sichergestellt werden, daß bei einer vorgegebenen Obergrenze der Gesamtlänge des Pakets dies eingehalten wird, sofern als Ausgangslänge La der Rohre 3, die für alle Rohre eines Pakets die gleiche ist, die Maximallänge des fertigen Paketes gewählt wird.By moving the material of the tube 3 substantially radially externally there is generally a reduction in the initial length La des Tube 3 to a length L which is about 0.5 to 2% shorter. Since the resulting length L represents the length of the package in the longitudinal direction 10 by the tubes 3 generally protrude from the front over the first and last circuit board 1, can thus be ensured that at a predetermined upper limit the Total length of the package this is complied with, provided that the starting length is La der Pipes 3, which is the same for all pipes in a package, the maximum length of the finished package is selected.

Falls die Teilplatinen1, 1' nicht miteinander verbunden sind, also die Schweisspunkte 16 fehlen, sind die Teilplatinen 1' mit dem grossen Durchlass nach Fertigstellung des Paketes um das Rohr 3 schwenkbar.If the sub-boards 1, 1 'are not connected to one another, that is to say the welding points 16 are missing, the sub-boards 1 'with the large passage are Completion of the package can be pivoted around tube 3.

Fig. 3 zeigt - in gleicher Blickrichtung wie Fig. 2 - ein Paket mit einem anderen inneren Aufbau. Das Paket gemäß Fig. 3 besteht aus identischen, jeweils einstückigen, Platinen 1a, 1b, 1c, ... die in einem bestimmten Abstand 20 parallel zueinander angeordnet sind. Zur Herstellung des Paketes werden dabei die Platinen 1a, 1b, 1c, ... im richtigen Abstand zueinander vorpositioniert und danach das Rohr 3 durch die Durchlässe 2 hindurchgeschoben, wobei die Durchlässe 2 den kleineren Durchlässen 2 in den Platinen 1 der Fig. 2 in ihrer Relation zum Rohr 3 entsprechen.Fig. 3 shows - in the same direction as Fig. 2 - a package with another inner structure. 3 consists of identical, each one-piece, circuit boards 1a, 1b, 1c, ... which are parallel at a certain distance 20 are arranged to each other. To produce the package, the Boards 1a, 1b, 1c, ... pre-positioned at the correct distance from each other and then the pipe 3 is pushed through the passages 2, the passages 2 the smaller passages 2 in the circuit boards 1 of FIG. 2 in relation to Tube 3 correspond.

Auch hierbei ergibt sich das gewünschte Kaltfließen des Materials des Rohrs 3 durch Aufweitung des Rohrs in Form von Aufwölbungen 19 bzw. 19' zwischen den Platinen 1a, 1b, 1c,...This also results in the desired cold flow of the material of the tube 3 by widening the tube in the form of bulges 19 and 19 'between the Boards 1a, 1b, 1c, ...

Gemäß Fig. 3 erfolgt hier das Aufweiten gemäß dem Stand der Technik mittels eines Aufweitdornes 14, der wie die Kugel 7 in Längsrichtung durch das Rohr geschoben wird, und mit seiner breitesten Stelle den Innendurchmesser des Rohrs 3 aufweitet, und damit auch dessen Außendurchmesser analog zur Vorgehensweise der Fig. 2 vergrößert. Gegenüber einer Kugel 3 hat ein solcher Aufweitdorn 14 den Nachteil, daß der Verschleiß immer an derselben Stelle, nämlich der breitesten Stelle des Aufweitdorns 14, welcher im weiteren Verlauf sich nach hinten verjüngt, stattfindet, während bei einer Kugel 3 der Verschleiß gleichmäßig über die gesamte Kugeloberfläche stattfindet. Zusätzlich ist dabei ein wesentlich grösserer Arbeitshub als bei Verwendung einer losen Kugel notwendig, da ein Dorn entweder vollständig zurückgezogen werden muss, oder auf der Gegenseite, also nach dem Hindurchschieben, abgenommen werden muss. Dafür ist bei einem Aufweitdom 14 die Handhabung aufgrund einer festen Verbindung mit der Schubstange einfacher.According to FIG. 3, the expansion according to the prior art takes place here by means of an expansion mandrel 14, which is like the ball 7 is pushed in the longitudinal direction through the tube, and with it widest point expands the inner diameter of the tube 3, and thus also whose outer diameter is enlarged analogously to the procedure in FIG. 2. Compared to a ball 3, such an expanding mandrel 14 has the disadvantage that the Wear always in the same place, namely the widest point of the Expanding mandrel 14, which tapers towards the rear as it progresses, while with a ball 3 the wear is uniform over the entire Spherical surface takes place. In addition, there is a much larger one Working stroke as necessary when using a loose ball because either a mandrel must be withdrawn completely, or on the opposite side, so after pushing through, must be removed. For that is with one Expansion dome 14 handling due to a firm connection to the push rod easier.

Fig. 4 zeigt einen Aufbau eines Paketes, bei dem die Platinen 1a, 1b, 1c unmittelbar aneinander anliegen, jedoch jeweils einstückige Platinen sind.Fig. 4 shows a structure of a package in which the boards 1a, 1b, 1c immediately abut each other, but are each one-piece boards.

Die Durchlässe 2 werden üblicherweise als Bohrungen oder Stanzungen hergestellt. Um dem Material des Rohrs 3 ein Ausweichen radial nach außen und zwar ungleichmäßig über die axiale Länge verteilt zu ermöglichen, sind die Durchlässe 2a, 2b, 2c, ... jeweils von den Stirnseiten der Platinen 1a, 1b, 1c, her mit einer Aufweitung 15 in Form einer Ansenkung des Bohrlochs ausgestattet. Diese Aufweitung kann auch nur jeweils auf einer Seite der Platine vorhanden sein. Ebenso kann die Aufweitung nur in bestimmten Winkelbereichen des Umfangs des Durchlasses vorhanden sein. The passages 2 are usually produced as bores or punchings. To avoid the material of the tube 3 radially outwards The passages are to enable unevenly distributed over the axial length 2a, 2b, 2c, ... each from the end faces of the circuit boards 1a, 1b, 1c, with a Expansion 15 equipped in the form of a countersink of the borehole. This Widening can also only be present on one side of the board. Likewise, the expansion can only take place in certain angular ranges of the circumference of the culvert.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

1a, 1b, 1c1a, 1b, 1c
Platinenboards
22
DurchlaßPassage
33
RohreTube
44
Außendurchmesserouter diameter
66
WandstärkeWall thickness
77
KugelBullet
88th
Schubstangepushrod
99
Außendurchmesser KugelOuter diameter ball
1010
Längsrichtunglongitudinal direction
1111
Querrichtungtransversely
1212
Innendurchmesser RohrInside diameter tube
1313
Paketpackage
LL
Länge PaketLength package
LALA
Ausgangslänge RohrOutput length pipe
1414
AufweitformAufweitform
1515
Aufweitungwidening
1616
Verschweissungwelding
1717
Spielgame
1818
Anschlagattack
19, 19'19, 19 '
Aufwölbungupheaval

Claims (11)

  1. A process for connecting a plurality of components disposed in mutually juxtaposed relationship to each other in the longitudinal direction (10), in particular sinkers (10), whose main planes are in transverse relationship with the longitudinal direction (10), to form an array (13), wherein
    a) at least one tube (3) is introduced in the longitudinal direction (10) into at least one aligned opening (2) in the components, in particular sinkers (1a, 1b, 1c),
    b) wherein the outside diameter (4) of the tube (3) is only slightly smaller than the opening (2), and
    c) expansion of the tube (3) until the components, in particular the sinkers (1a, 1b, 1c) are fixed on the tube (3) by the increase in the outside diameter (4),
    characterized in that
    d) round contours are selected as the outside contour of the openings and the outside diameters of the tubes, and
    e) the outside diameter of the tube is so selected that, in the region between the individual sinkers (1a, 1b, 1c), in the final condition, the outside diameter of the tube (3) is larger than in the region of the openings (2) through the individual sinkers (1a, 1b, 1c) by the outside wall of the tube (3) in the final condition bearing fixedly against the inside diameters of the openings (2),
    f) expansion of the tubes is effected by means of pushing a loose ball through the tubes by means of a thrust bar (8), the outside diameter thereof being larger than the inside diameter (12) of the tube in the initial condition but smaller than the size of the opening (2) in the sinkers (1) in the initial condition in order to be able to push the expansion member through the tube in direct contact with the inside diameter of the tube,
  2. A process as set forth in claim 1
       characterised in that the tube (3) comprises metal, in particular chromium nickel steel.
  3. A process as set forth in one of the preceding claims
       characterised in that the wall thickness (6) of the tube is between 0.1 and 0.4 mm.
  4. A process as set forth in one of the preceding claims
       characterised in that during the pushing of the ball (7) by means of a thrust bar (8) through the tube the opposite end of the tube is pressed against an abutment.
  5. A process as set forth in one of the preceding claims
       characterised in that expansion of the tube is effected only in the region between the individual sinkers (1a, 1b, 1c).
  6. A process as set forth in one of the preceding claims
       characterised in that the components, in particular sinkers, directly adjoin each other in the longitudinal direction (10) and the openings (2a, 2b, 2c) are enlarged at at least one end to such an extent that the enlargement portion is sufficient to receive the material which is displaced by means of flow upon expansion of the tube (3).
  7. A process as set forth in one of the preceding claims
       characterised in that the openings (2a, 2b, 2c) are enlarged at both side faces.
  8. A process as set forth in one of the preceding claims
       characterised in that the components or sinkers comprise a plurality of sinker portions (1, 1') which adjoin each other in the longitudinal direction and in particular are fixedly connected together, more particularly by spot welding, and the mutually corresponding mutually aligned openings (2, 2') are of different sizes and are disposed in mutually concentric relationship, wherein only the smaller opening (2) is so dimensioned that upon expansion of the tube (3) pushed therethrough a fixed connection is made to the tube (3).
  9. A process as set forth in one of the preceding claims
       characterised in that the components, in particular sinkers, have a plurality of openings (2a, 2b, 2c).
  10. A process as set forth in one of the preceding claims
       characterised in that with more than two openings (2a, 2b, 2c,...) the openings are not in one plane.
  11. A process as set forth in one of the preceding claims
       characterised in that to produce an array of a defined length (L) one or more tubes (3) of an initial length (LA) which is larger than the defined length are used and expansion of the tubes is effected by continuous expansion along the longitudinal direction.
EP98966970A 1997-12-24 1998-12-21 Pipe connection Expired - Lifetime EP1044078B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19757962 1997-12-24
DE19757962A DE19757962C2 (en) 1997-12-24 1997-12-24 pipe connection
PCT/EP1998/008391 WO1999033589A2 (en) 1997-12-24 1998-12-21 Pipe connection

Publications (2)

Publication Number Publication Date
EP1044078A1 EP1044078A1 (en) 2000-10-18
EP1044078B1 true EP1044078B1 (en) 2002-04-24

Family

ID=7853443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98966970A Expired - Lifetime EP1044078B1 (en) 1997-12-24 1998-12-21 Pipe connection

Country Status (8)

Country Link
EP (1) EP1044078B1 (en)
JP (1) JP2002508252A (en)
KR (1) KR20010015894A (en)
CN (1) CN1284902A (en)
AT (1) ATE216640T1 (en)
DE (2) DE19757962C2 (en)
TR (1) TR200001831T2 (en)
WO (1) WO1999033589A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215554A1 (en) * 2002-04-09 2003-10-30 Universal Hydraulik Gmbh Expansion method for tubes of a heat exchanger uses steel ball driven by pressurized hydraulic oil etc. through tube for connection to fin of heat exchanger for homogenous process and even wear on ball
DE10227532B4 (en) 2002-06-20 2006-02-23 Groz-Beckert Kg Module for textile machines, in particular mesh-forming machines
DE102006043590A1 (en) * 2006-09-16 2008-03-27 Sandvik Gmbh ball autofrettage

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB312453A (en) * 1928-04-13 1929-05-30 Thomas Andre Method of securing blades or strips on a tubular support
DE713551C (en) * 1939-05-11 1941-11-10 Carl Filip Freden Process for the production of rakes, in particular protective rakes, for turbine systems
US2754573A (en) * 1952-08-15 1956-07-17 Babcock & Wilcox Co Method of manufacturing fluid heat exchange apparatus
US4152818A (en) * 1977-07-14 1979-05-08 United Aircraft Products, Inc. Making mechanical tube joints
JPS59104226A (en) * 1982-12-08 1984-06-16 Hitachi Ltd Joining construction of tubular member and annular body part
JPS59156523A (en) * 1983-02-25 1984-09-05 Toshiba Corp Expanding device of pipe for heat exchanger
JPS60145228A (en) * 1983-12-29 1985-07-31 Nippon Kentetsu Co Ltd Attaching method of heat transfer tube
JPH02205212A (en) * 1989-02-02 1990-08-15 Showa Alum Corp Method for fixing pipe and fins in heat exchanger
DE4201478C1 (en) * 1992-01-21 1993-02-04 Bayerische Motoren Werke Ag, 8000 Muenchen, De Method for installing cams on shaft - has cam held by clamps onto hollow camshaft which is expanded under pressure to engage cam
US5280675A (en) * 1992-07-13 1994-01-25 The Torrington Company Camshaft and method of making a camshaft
DE4332768C2 (en) * 1993-09-25 2000-05-31 Behr Gmbh & Co Method and tool for expanding metal tubes with an oval cross-section

Also Published As

Publication number Publication date
DE19757962C2 (en) 2003-05-28
KR20010015894A (en) 2001-02-26
TR200001831T2 (en) 2001-01-22
DE59803942D1 (en) 2002-05-29
EP1044078A1 (en) 2000-10-18
JP2002508252A (en) 2002-03-19
CN1284902A (en) 2001-02-21
WO1999033589A3 (en) 1999-08-26
WO1999033589A2 (en) 1999-07-08
ATE216640T1 (en) 2002-05-15
DE19757962A1 (en) 1999-07-08

Similar Documents

Publication Publication Date Title
DE3323640A1 (en) CONNECTING DEVICE BETWEEN A TUBULAR BODY AND A RING-SHAPED PART AND METHOD FOR PRODUCING THIS CONNECTION
EP0663536A2 (en) Blind rivet and method for its fabrication
DE19614656A1 (en) Manufacture of increased wall thickness on hollow profile, for IC engine exhaust pipe
DE19820654A1 (en) Sliding sleeve of a synchronizing unit for manual transmissions
EP0387678A1 (en) Heat exchanger and process for the watertight fixation of heat exchange elements to an end plate
DE2829433C2 (en) Helical gear
DE102004020003A1 (en) Cylindrical bearing element and a method for producing a cylindrical bearing element
DE6926773U (en) PRESSING TOOL FOR PERMANENTLY JOINING CIRCULATING PARTS, LIKE SHAFT SECTIONS OR THE LIKE.
EP2181783B1 (en) Splined rod with curled end and method for its production
EP1064466B1 (en) Punching rivet
EP3153746A1 (en) Piston bolts
DE69711696T2 (en) METHOD FOR CROSS-PRESSING A CYLINDRICAL PART INTO A TUBULAR PART AND CORRESPONDING UNIT OF TWO PARTS
EP1133594B1 (en) Bar assembly
EP1044078B1 (en) Pipe connection
DE3737600A1 (en) METHOD FOR PRODUCING ASSEMBLED CRANKSHAFT BY EXPANDING SLEEVES ARRANGED IN DIVIDED PINS
DE69202225T2 (en) Process for manufacturing a heat exchanger system.
DE10309695C5 (en) Mounting system and method for connecting plastic pipes
DE10148980A1 (en) Switch arm, for the transmission of switching movements, is of a deep drawn plate to give material and production cost savings
DE102006001229A1 (en) Automotive gearshift selector fork has assembly rivets with sheet metal heads cut from sheet metal components in the same fork
DE19748345C2 (en) Slide valve
DE2012451A1 (en) Method for producing a press-fit connection
EP1169147B1 (en) Method and device for producing a semi-finished product
DE10149546A1 (en) Forming method for functional area in metal plates, e.g. for hydraulics, pneumatics, IC engines, etc. uses forming tool with punch to upset plate edge against shaping tool to create material build-up
DE102020107058A1 (en) Locking unit
DE2212189A1 (en) BALL CAGE FOR FLAT GUIDES

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000721

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20010103

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020424

REF Corresponds to:

Ref document number: 216640

Country of ref document: AT

Date of ref document: 20020515

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59803942

Country of ref document: DE

Date of ref document: 20020529

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHMAUDER & PARTNER AG PATENTANWALTSBUERO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020724

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020724

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020724

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20020424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021030

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 1044078E

Country of ref document: IE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021221

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021231

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030127

BERE Be: lapsed

Owner name: *SAXONIA UMFORMTECHNIK G.M.B.H.

Effective date: 20021231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051221

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: SAXONIA TEXTILE PARTS GMBH

Free format text: SAXONIA UMFORMTECHNIK GMBH#HOLZHEIMER STRASSE 4#D-73037 GOEPPINGEN (DE) -TRANSFER TO- SAXONIA TEXTILE PARTS GMBH#HOLZHEIMER STRASSE 4#73037 GOEPPINGEN (DE)

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: SCHMAUDER & PARTNER AG PATENT- UND MARKENANWAELTE VSP;ZWAENGIWEG 7;8038 ZUERICH (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20121218

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121227

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59803942

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59803942

Country of ref document: DE

Effective date: 20140701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140701

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131231