EP0649689B1 - Méthode et dispositif pour la fabrication des raccords à compression - Google Patents

Méthode et dispositif pour la fabrication des raccords à compression Download PDF

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Publication number
EP0649689B1
EP0649689B1 EP94116592A EP94116592A EP0649689B1 EP 0649689 B1 EP0649689 B1 EP 0649689B1 EP 94116592 A EP94116592 A EP 94116592A EP 94116592 A EP94116592 A EP 94116592A EP 0649689 B1 EP0649689 B1 EP 0649689B1
Authority
EP
European Patent Office
Prior art keywords
die
bottom die
pipe connection
blank
section
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
EP94116592A
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German (de)
English (en)
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EP0649689A1 (fr
Inventor
Walter Viegener
Heinz Walter
Wolfgang Grau
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.)
Witzig and Frank GmbH
Original Assignee
Witzig and Frank Turmatic GmbH
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Priority claimed from DE19934336261 external-priority patent/DE4336261C2/de
Application filed by Witzig and Frank Turmatic GmbH filed Critical Witzig and Frank Turmatic GmbH
Publication of EP0649689A1 publication Critical patent/EP0649689A1/fr
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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
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49442—T-shaped fitting making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49444—Elbow or L-shaped fitting making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53722—Annular work with radially acting tool inside annular work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other

Definitions

  • Press fittings are mass-produced items and are used by Execution of pipeline installations in large numbers used. From this derives the requirement produce such press fittings as inexpensively as possible to be able to.
  • the press fitting with is in contact with the pipe to be connected, it can especially if the pipe and fitting are in the water installation used to form a corrosion-promoting electrical local element come when the pipe and fitting are made of metals that have different electrochemical potentials.
  • the press fitting should be avoided to produce the same material as that used Pipe material exists.
  • the two-part and the one-part Die are now pressed towards each other so that it is off the two-part die protruding tube end is compressed, being in the area between the two matrices bulges defined ring groove to the outside.
  • the press fitting is enclosed by the die to such an extent that its section lying between the beads is defined and delimited by the die.
  • the press fitting is also fixed inward for further processing. This ensures that the inside diameter of the pipe connection area is not narrowed during the subsequent machining operations and that a dimensionally accurate press fitting is produced.
  • the wall thickness of the pipe connection area cannot increase significantly, and the inside and outside diameters remain largely unchanged.
  • the wall material compressed in this work step flows into the annular groove provided in the die, a more or less pronounced bead being formed on the inside of the pipe connection area and a bulge being formed on the outside.
  • the interplay of the support mandrel or the die section and the means upsetting the pipe connection area with a corresponding dimensioning of their working stroke ensures that there is sufficient material in the area of the annular groove for the subsequent molding process in which the bead is finished.
  • the bead then has approximately the same wall thickness as the rest of the pipe connection area.
  • the upsetting process that takes place before the bead is formed, it is ensured that the wall thickness in the area of the bead is not significantly weakened.
  • the bead is not a weak point and the press fitting produced with this process can be expected to have a good seal and durability. Even if, for example as a result of thermal expansion of the pipes connected to the press fittings, greater axial forces occur, the press fittings hold reliably without crack formation.
  • This enables the production of copper press fittings with which copper pipes that are subject to high thermal expansion (50% larger than steel) can be connected to one another without the formation of local elements.
  • the process is easy to automate.
  • the press fittings can thus be manufactured fully automatically and therefore inexpensively.
  • the blank is cut to length at the pipe connection area to be compressed after it has been inserted into the die and before the support mandrel has been inserted. An otherwise harmful influence of length tolerances of the blanks, which could influence the extent of the compression and thus the wall thickness in the area of the bead, can thus be reliably eliminated.
  • the dimensional accuracy of the finished fitting it benefits if the blank at least during the Deformation is fixed axially, so that slipping is safely excluded during the upsetting process.
  • the formation of the bead from that in the upsetting process by means of the trailing sleeve or the pressing means Bead, in the area of which the wall thickness is at least initially slightly enlarged, can easily by means of an eccentrically rotating one in the pipe connection piece Role. This presses the compressed wall material into the ring groove. This means that the wall material lies snugly on the outside of the ring groove. Determines the inside of the pipe connection area Roll the geometric shape of the bead, so that in particular this area, which later served as a seal O-ring is inserted, has a very good dimensional accuracy. The otherwise rotatably mounted roller pushed radially outwards over several rounds until the intended bead shape is reached.
  • the insertion process is finished when the wall thickness in the area of the bead approximately the same as the rest Wall thickness of the pipe connection area is. Especially it is ensured that the wall thickness of the bead only is insignificantly less than the remaining wall thickness, however, if necessary, this can also be somewhat thinner than that remaining wall thickness can be kept, namely if the corresponding Pipe connection area not very compressed been and in the subsequent rolling process Wall thickness rolled back beyond the original dimension has been.
  • the device has a die, which consists of several parts, i.e. is at least in two parts, so that the keeps constructive effort within limits.
  • the die takes the blank, with sections starting from the respective Project the mouth out of the die.
  • the support mandrel is provided on the inside, especially in the subsequent upsetting process prevents collapsed wall material in the Pipe cross-section occurs and this narrows. That for Implementation of the compression process provided pressing means can the pipe connection area with a single stroke compress in a fast-moving process.
  • the matrix so that both together share the recording room for the press fitting.
  • the die section movable, so that the upsetting process already can begin before the die section on the die is present.
  • this area can be kept just as large that the blank on one for the good training of the later Beading required length buckles outwards.
  • the movable die section can be annular with which it has a high stability and a precise compression of the press fitting allowed.
  • a rigid connection between the die section and the pressing means makes the two work synchronously Elements safe, with particularly good work results can be achieved.
  • the pressing agent and the die section are integrally formed with one another be, forming an annular die. With the press fitting can be compressed in one working stroke be without additional means to bring about a synchronization between the pressing means and the Die section would be required.
  • the formation of the pressing agent as an inner shoulder the die section enables a uniform action on the front wall of the pipe connection area.
  • the inner shoulder on the a flat end face on the side facing the die has a uniform pressure distribution on the pipe connection area.
  • the roller device can have a separate die section be assigned.
  • the Upsetting device associated die cut and the the die section assigned to the roller device for the each work step can be optimized match those of the respective die sections with the Commonly delimited ring grooves with each other largely match. This results in a clean press fitting with precisely shaped beads.
  • the one that can be moved in and out of the pipe connection area Rolling device can be eccentric on a circular path be moved so that the intended bead in one Rolling or rolling process is formed.
  • the rolling device can be particularly simple comprise a carrier, on the front side of a role is rotatably mounted.
  • This carrier will come out of the support mandrel and the pressing means from that in the die inserted pipe connection area into this, after which he started with a radial movement on the area of the Wall on which the bead is to be formed, pressed becomes.
  • the role performs the eccentric rolling motion from which the bead is rolled.
  • the roll has an arcuate cross section, whose radius is smaller than that by the wall thickness
  • the radius of the bead provided in the die can be changed Wall thickness of the press fitting over the entire area of Bead to be kept essentially constant.
  • the roll has a cross-section like Bell curve has, can be achieved that the bead after performing the rolling or rolling process with a smooth curve passes into the rest of the pipe wall.
  • a uniform symmetrical formation of the ring groove is obtained when the carrier is substantially axially parallel to the longitudinal extent of the pipe connection area is guided on a concentric path.
  • FIGS. 6 to 8 show a modified device to manufacture the press fittings.
  • the same parts as those already described Devices are generally with the same reference numerals provided, only a different number is added.
  • the device 61 shows a device 61 for example Manufacture of T-shaped fittings with the mouths lying circumferential beads shown in sections.
  • the device 61 initially includes a two-part Die 62, of which only the cut in Fig. 6 Bottom part is shown schematically.
  • the die 62 has a receiving space 63, the shape of which is good Accuracy of the desired outer contour of the one to be produced Press fittings from crimp to crimp correspond.
  • the Has die 62 for a T-shaped press fitting according to FIG. 7 also the receiving space 63 the T-shape of a press fitting, through cylinder bores at right angles to each other 65, 66 is determined.
  • the cylinder bores 65, 66 are each quarter-circular open edge groove 67, 68, 68 'provided, those for the respective bore axes designated 69 and 610 each lies coaxially.
  • a blank 611 is inserted into the receiving space 63, from which the subsequent press fitting is to be manufactured.
  • the pipe connection areas 612, 613, 613 ' protrude from the cylinder bores and are initially still hollow cylindrical. In particular, they are not lying in the ring grooves 67, 68, 68 'i.e. they don't have any Bead on.
  • the device 61 comprises three right angles opposing upsetting devices 614, 615, 615 'die are completely identical to each other, so that in following only the upsetting device located at the top in FIG. 7 614 and the same reference numerals, with one or two apostrophes for which Parts of the upsetting device 615, 615 'are used, without being specifically referred to.
  • the upsetting device 614 does not have one on one attached feed device shown Pressure stamp 616 on the one facing the die 62 Side provided with a die section 617 is.
  • the die section 617 has a central one the cylinder bore 65 aligned bore 618 whose Diameter with the diameter of the cylinder bore 65 matches.
  • the mouth of the opening 618 is surrounded by an open-edged annular groove 623, the cross section of which is essentially a quarter circle segment.
  • the ring groove 623 is dimensioned such that it complements the ring groove 67 provided on the die 62 to form a smooth, approximately semicircular ring groove when the die section 617 abuts the die 62.
  • an annular shoulder 624 is provided in the die section 617, which is arranged concentrically to the die section 617. The annular shoulder 624 forms a flat contact surface for the end face of the pipe connection region 612 of the blank 611.
  • the distance between the annular shoulder 624 and the annular groove 623 is dimensioned such that the section of the blank 611 that penetrates into the annular gap during the upsetting process, that between the support mandrel 619 and the die section 617 is formed to begin to compress before the die section 617 abuts the die 62.
  • roller device 8 is one belonging to the device 1 however, roller device not shown in FIG. 6 625, the cylinder bore 66, 66 ' each have a roll device, not separately illustrated assigned. Differentiate the rolling devices only by their spatial arrangement, are otherwise but completely identical.
  • the roller device 625 does not have one on one further shown management and actuation device attached base body 627, from which a carrier 628 protrudes in the direction of the bore axis 69.
  • the carrier 628 has an outer diameter that is significantly less than the inner diameter of the cylinder bore is 65 and he has a length that is greater than the distance of the Ring groove 67 from the mouth of the semi-finished press fitting is.
  • the cross section of the roller 629 is included slightly bell-shaped on the outside of the roller 629 and indeed, as the inner contour of the bead is formed shall be.
  • the basic body is used to carry out this movement 627 from the management and actuating device, not shown on the one hand in the direction of FIG. 8 downward arrow 630 axially in the direction of Bore axis 69 movable.
  • a rotating device is provided, with the help the roller 629 can be moved on a circular path, whose axis coincides with the bore axis 69.
  • Actuator able to move the body 627 in radial direction, i.e. towards the in Fig. 8 after right arrow 632 to move, so that the roll 629 on its circular path at all points radially outwards is pressed.
  • a die section 633 is provided which is connected to a Power-operated linearly movable along the bore axis 69 Arm 634 is held.
  • the die section 633 has a through bore aligned with the cylinder bore 65 635 on, the diameter with the diameter the cylinder bore 65 matches.
  • an open edge groove 636 is provided which is with the annular groove 67 to an approximately bell-shaped circumferential Ring groove added.
  • Through hole 635 of the die portion 633 is the Through hole 635 towards a larger diameter expanded.
  • the pipe connection areas 613, 613 ' assigned roller devices are further die sections provided that the respective pipe connection area Support 613, 613 'outwards and on the corresponding ones Arms longitudinally movable along the bore axis 610 are. These are die sections to simplify the illustration however not shown separately.
  • the example here. copper blank 611 is inserted into die 62, after which this is closed, so that the blank 611 is held in the die 62.
  • the cylinder bores 65, 66 protruding parts of the blank 611 or more precisely that Pipe gating areas 612, 613 corresponding to a desired one and depend on the subsequent upsetting process Length cut to length.
  • Stamp 616, 616 ', 616' 'in the direction of that shown in Fig. 9 Arrows, i.e. in the direction of the bore axes 69, 610 each axially towards the cylinder bores 65, 66 driven until the support mandrels 619, 619 ', 619' 'into the pipe connection areas 612, 613, 613 'have occurred and with support their lateral surfaces, especially the area, in the bead is to be formed.
  • the stamps 616, 616 ', 616' ' continue to open to move the die 62, the die sections 617, 617 ', 617' 'with their ring shoulders 624, 624', 624 '' to the front of the pipe connection areas 612, 613, 613 'and put them in between compress the ring grooves 67, 623 lying section so that the wall of the blank 611 folds outwards. in the The die section becomes the further course of the upsetting process continued to the die 62 until it is on this is pending.
  • each open ring grooves 67, 623 formed initially still open gap so that a closed annular groove is formed into which the bulging material of the wall of the compressed pipe connection area concerned 612, 613, 613 '. It can be due to the The wall thickness in the area of the ring groove may be increase slightly first.
  • the stamp 616, 616 ', 616' 'these are retracted so far that also the respective support mandrel 619, 619 ', 619' 'from the cylinder bore 65, 66 comes out and the area in front of the mouth the cylinder bore 65, 66 is released.
  • the rolling device 625 and the die section in front of the cylinder bore 65 positioned so that the roller 629 immediately in front of its mouth.
  • the Protrusions 638 are supported on the die 62 provided cylindrical surface and fix the die section 633 in the radial direction.
  • the role 629 with a feed movement in the direction of arrow 630 as far as into the cylinder bore until the roller 629 stands exactly in the area of the ring groove 67.
  • the axis of rotation of Roller 629 is offset parallel to the bore axis 69.
  • roll 629 is started on a circular path to move, which concentrically surrounds the bore axis 69.
  • This turns the bead into a kind of rolling process from the roll 629 true to size according to its cross-sectional shape formed, the role on a circular path with increasing Diameter, so strictly speaking on a spiral track is led.
  • the roller 629 becomes radial so far led outwards until a corresponding stop is reached in which between the roller 629 and the annular groove 67 a gap remains on the entire circumference, which equal to the remaining wall thickness of the pipe connection area 612 is.
  • the rolling device 625 removed from the cylinder bore 65, after which the die section 653 from the pipe connection area withdrawn, the die 62 opened and now with a crimped press fitting can be removed.
  • the modified procedure described above can also with a correspondingly modified device for the production of pipe angles, fittings, straight Pipe connections and the like can be used.
  • the procedure includes inserting the Blank 611 in the die 62 and the removal of the with the crimped press fittings from the die 62 fully automatically from. Because few, little time consuming Work steps required can be done with one device 61 made many press fittings in a short time will.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Automatic Assembly (AREA)
  • Press Drives And Press Lines (AREA)
  • Measuring Fluid Pressure (AREA)
  • Wire Processing (AREA)

Claims (31)

  1. Procédé de fabrication de raccords à compression en un matériau déformable plastiquement, notamment en cuivre, selon lequel on part d'une ébauche (11) comportant au moins une partie de raccordement (12, 13) de section circulaire,
    selon lequel on place l'ébauche (11) dans une matrice (2) qui l'entoure extérieurement, au moins dans la région de la partie de raccordement (12, 13),
    selon lequel on introduit ensuite dans la partie de raccordement (12, 13) un mandrin de contre-appui (19, 19'), lequel mandrin de contre-appui (19, 19') est en contact parfait avec la paroi intérieure de la partie de raccordement,
    selon lequel on refoule axialement l'ébauche (11), au moins dans la partie de raccordement (12, 13) concernée, le matériau de l'ébauche (11) étant amené à fluer en formant un bourrelet annulaire extérieur dans une gorge annulaire (7, 8) entourant la partie de raccordement (12, 13) prévue dans la matrice (2), l'épaisseur de paroi dans la région de la gorge annulaire (7, 67) et du bourrelet qui se forme dans celle-ci étant augmentée et
    selon lequel, après le retrait du mandrin de contre-appui (19), on façonne depuis l'intérieur, dans la région de la gorge annulaire (7, 8), une moulure circulaire continue, puis on retire le raccord à compression de la matrice (2).
  2. Procédé de fabrication de raccords à compression comportant une moulure annulaire, réalisé en un matériau déformable plastiquement, notamment en cuivre, selon lequel on part d'une ébauche (611) comportant au moins une partie de raccordement (612, 613) de section circulaire,
    selon lequel on place l'ébauche (611) dans une matrice (62) qui entoure l'ébauche (611) jusqu'à la moulure à former et qui laisse dégagée la partie située entre la moulure de l'ébauche (611) et l'embouchure de celle-ci voisine de ladite moulure,
    selon lequel on introduit ensuite un mandrin de contre-appui (619, 619') dans la partie de raccordement (612, 613), lequel mandrin de contre-appui est en contact parfait avec la paroi intérieure de la partie de raccordement,
    selon lequel on refoule axialement l'ébauche (611) dans la partie de raccordement (612, 613) concernée, le matériau de l'ébauche (611) formant un bourrelet circulaire extérieur, l'épaisseur de paroi dans la région du bourrelet qui se forme étant augmentée,
    selon lequel, pendant le processus de refoulement, on enfile une partie de matrice (617) mobile sur la partie de raccordement (612, 613), le bourrelet circulaire extérieur fluant dans une gorge annulaire (67, 623) qui entoure la partie de raccordement (612, 613) et est délimitée par la matrice (62) et la partie de matrice (617) et
    selon lequel, après le retrait du mandrin de contre-appui (619), on façonne depuis l'intérieur une moulure circulaire continue dans la région de la région de la gorge annulaire (67, 623).
  3. Procédé selon la revendication 1 ou 2, caractérisé par le fait qu'après avoir placé l'ébauche (11, 611) dans la matrice (2, 62) et avant d'introduire le mandrin de contre-appui (19, 619), on recoupe ladite ébauche au niveau de la partie de raccordement (12, 612, 13, 613) devant être refoulée.
  4. Procédé selon une des revendications précédentes, caractérisé par le fait que l'ébauche (11, 611) est bloquée axialement au moins pendant le processus de formage.
  5. Procédé selon la revendication 1, caractérisé par le fait que l'on refoule l'ébauche (11) à l'aide d'une douille à suivre (17) de telle sorte que l'épaisseur de paroi dans la région de la gorge annulaire (7) et du bourrelet formé dans celle-ci soit augmentée.
  6. Procédé selon la revendication 2, caractérisé par le fait que lors de l'opération de refoulement on déplace la partie de matrice (617) en synchronisme avec un moyen de pressage (624) utilisé pour le refoulement.
  7. Procédé selon la revendication 1 ou 2, caractérisé par le fait que l'on forme la moulure dans la gorge annulaire fermée par repoussage à l'aide galet (29, 629) excentrique mis en rotation à l'intérieur du raccord (12, 612).
  8. Procédé selon la revendication 7, caractérisé par le fait que l'on presse le galet (29, 629) radialement vers l'extérieur pendant plusieurs tours jusqu'à l'obtention de la forme de moulure prévue.
  9. Procédé selon la revendication 7, caractérisé par le fait que l'on arrête le processus de repoussage lorsque l'épaisseur de paroi dans la région de la moulure correspond sensiblement à l'épaisseur de paroi du reste du raccord (12, 612).
  10. Dispositif pour la fabrication de raccords à compression pourvus d'une moulure annulaire dans la partie de raccordement, conformément au procédé selon la revendication 1,
    avec une matrice (2) stationnaire en plusieurs parties qui comporte une chambre réceptrice (3) pour des ébauches (11), dont la forme correspond à la forme extérieure du raccord à compression à fabriquer et qui, dans la région d'au moins une partie de raccordement (12, 13) prévue sur le raccord à compression, présente une ouverture (5, 6),
    avec un mandrin de contre-appui (19) orienté axialement et concentrique à l'ouverture (5) prévue dans la matrice (2) qui peut être introduit dans et retiré de l'ouverture à l'aide d'un dispositif d'actionnement, avec une douille à suivre (17) coulissant axialement par rapport au mandrin de contre-appui (19) pour refouler l'ébauche (11) et
    avec au moins un dispositif de roulage (25) qui tourne de manière excentrique dans la chambre réceptrice (3) et peut être introduit dans ou retiré de celle-ci.
  11. Dispositif pour la fabrication de raccords à compression pourvus d'une moulure annulaire dans leur partie de raccordement, conformément au procédé selon la revendication 2,
    avec une matrice (62) stationnaire en plusieurs parties qui comporte une chambre réceptrice (63) pour des ébauches (611) qui présente au moins une ouverture (65, 66),
    avec un mandrin de contre-appui (619) orienté axialement et concentrique à l'ouverture (65) prévue dans la matrice (62) qui peut être introduit dans et retiré de l'ouverture à l'aide d'un dispositif d'actionnement (616),
    avec un moyen de pression (624) pour refouler l'ébauche (611),
    avec une partie de matrice (617) qui peut être déplacée en direction de la matrice (62) et éloigné de celle-ci et qui définit une gorge annulaire (67, 623) avec la matrice (62) lorsqu'elle est appliquée contre l'ouverture de cette dernière, et
    avec au moins un dispositif de roulage (625) qui tourne de manière excentrique dans la chambre réceptrice (63) et peut être introduit dans ou retiré de celle-ci.
  12. Dispositif selon la revendication 10, caractérisé par le fait que le diamètre de l'ouverture (5) prévue dans la matrice (2) est sensiblement égal au diamètre extérieur de la partie de raccordement (12) de l'ébauche (11).
  13. Dispositif selon la revendication 10 ou 11, caractérisé par le fait que le diamètre extérieur du mandrin de contre-appui (19, 619) correspond au diamètre intérieur de la partie de raccordement (12, 612).
  14. Dispositif selon la revendication 10, caractérisé par le fait que le mandrin de contre-appui (19) est guidé dans la direction axiale par un dispositif d'avancement.
  15. Dispositif selon la revendication 10, caractérisé par le fait que la douille à suivre (17) est essentiellement cylindrique creuse.
  16. Dispositif selon la revendication 10, caractérisé par le fait que la douille à suivre (17) présente une face frontale plane du côté tourné vers la matrice (2).
  17. Dispositif selon la revendication 10, caractérisé par le fait que le diamètre intérieur de la douille à suivre (17) est essentiellement égal au diamètre extérieur du mandrin de contre-appui ( 19) et que son diamètre extérieur est essentiellement égal au diamètre intérieur de l'ouverture (5) de la matrice (2).
  18. Dispositif selon la revendication 10, caractérisé par le fait que la douille à suivre (17) est guidée par un dispositif d'avancement.
  19. Dispositif selon la revendication 10, caractérisé par le fait que la douille à suivre (17) est guidée dans la direction transversale par l'ouverture (5) de la matrice (2) et le mandrin de contre-appui (19).
  20. Dispositif selon la revendication 11, caractérisé par le fait que la partie de matrice (617) est conformée en anneau.
  21. Dispositif selon la revendication 11, caractérisé par le fait que la partie de matrice (617) est associée de manière fixe au moyen de pression (624).
  22. Dispositif selon la revendication 11, caractérisé par le fait que le moyen de pression (624) et la partie de matrice (617) associée à celui-ci sont liés de manière de rigide l'un à l'autre.
  23. Dispositif selon la revendication 11, caractérisé par le fait que le moyen de pression (624) et la partie de matrice (617) sont formés d'une pièce et constituent une forme annulaire.
  24. Dispositif selon la revendication 23, caractérisé par le fait que la forme présente une ouverture (618) de diamètre adapté au diamètre extérieur du raccord à compression avec un épaulement interne (624) pourvu d'une surface plane annulaire servant de moyen de pression (624).
  25. Dispositif selon la revendication 11, caractérisé par le fait que le moyen de pression (624) est guidé axialement par un dispositif d'avancement.
  26. Dispositif selon la revendication 10 ou 11, caractérisé par le fait que le dispositif de roulage (25, 625) comporte un support (28, 628) à une extrémité frontale duquel un galet (29, 629) est monté rotatif.
  27. Dispositif selon la revendication 26, caractérisé par le fait que le galet (29, 629) présente une section en arc de cercle dont le rayon est inférieur de la valeur de l'épaisseur de paroi au rayon de la gorge annulaire (7, 67) prévue dans la matrice (2, 62).
  28. Dispositif selon la revendication 26, caractérisé par le fait que le galet (29, 629) présente une section en forme de cloche telle que le galet (29, 629) définit avec la gorge annulaire (7, 67) un espace de hauteur régulière.
  29. Dispositif selon la revendication 26, caractérisé par le fait que le support (28, 628) est déplacé sensiblement parallèlement à l'axe (9, 69) du trou cylindrique (5, 65), suivant une trajectoire concentrique.
  30. Dispositif selon la revendication 11, caractérisé par le fait qu'une partie de matrice (633) est associée au dispositif de roulage (625), laquelle partie de matrice peut être déplacée en direction de et éloignée de la matrice (62) et, avec la matrice (62), définit une gorge annulaire (67, 636) qui coïncide avec la gorge annulaire (67, 623) délimitée par la matrice (62) et la partie de matrice (617) associée à cette dernière.
  31. Dispositif selon la revendication 30, caractérisé par le fait que la partie de matrice (633) associée au dispositif de roulage (625) est pourvue de moyens de fixation (638) par l'intermédiaire desquels la partie de matrice (633) peut être liée par obstacles à la matrice (62) de manière telle que la partie de matrice (633), même en présence d'une sollicitation radiale résultant du processus de roulage, reste positionnée concentriquement à l'ouverture (6).
EP94116592A 1993-10-23 1994-10-21 Méthode et dispositif pour la fabrication des raccords à compression Expired - Lifetime EP0649689B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4336261 1993-10-23
DE19934336261 DE4336261C2 (de) 1993-10-23 1993-10-23 Verfahren zum Herstellen von Pressfittings und Vorrichtung zur Durchführung des Verfahrens
DE4410146A DE4410146C2 (de) 1993-10-23 1994-03-24 Vorrichtung zur Herstellung von Pressfittings
DE4410146 1994-03-24

Publications (2)

Publication Number Publication Date
EP0649689A1 EP0649689A1 (fr) 1995-04-26
EP0649689B1 true EP0649689B1 (fr) 1998-01-14

Family

ID=25930664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116592A Expired - Lifetime EP0649689B1 (fr) 1993-10-23 1994-10-21 Méthode et dispositif pour la fabrication des raccords à compression

Country Status (10)

Country Link
US (1) US5615481A (fr)
EP (1) EP0649689B1 (fr)
JP (1) JP3618127B2 (fr)
AT (1) ATE162119T1 (fr)
CZ (1) CZ286140B6 (fr)
DE (2) DE4410146C2 (fr)
DK (1) DK0649689T3 (fr)
ES (1) ES2111232T3 (fr)
GR (1) GR3025910T3 (fr)
SK (1) SK281939B6 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002255A1 (fr) 2000-06-30 2002-01-10 Witzig & Frank Gmbh Procede et dispositif pour la production de raccords tubulaires a la presse en acier, notamment en acier special
DE102009044279A1 (de) 2009-10-16 2011-04-21 Mag Europe Gmbh Verfahren zur Herstellung eines Wandanschlussstücks

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WO2000034704A2 (fr) 1998-12-04 2000-06-15 Coda Limited Systeme de jointage
US6572358B1 (en) * 2001-11-15 2003-06-03 Pilot Industries, Inc. Die assembly for forming a bead on a cylindrical tube
US7770429B2 (en) * 2003-11-28 2010-08-10 Witzig & Frank Gmbh Method for producing a coupling on a pipe and device for producing said coupling
US8365571B2 (en) * 2006-05-15 2013-02-05 Komatsu Ltd. Pipe expanding method and pipe expanding device for steel pipe
JP4941054B2 (ja) * 2007-03-30 2012-05-30 住友金属工業株式会社 継目無ベンド管の製造方法並びに溶接継手及びその製造方法
US7987690B2 (en) * 2008-01-04 2011-08-02 Cerro Flow Products Llc Fluid conduits with integral end fittings and associated methods of manufacture and use
US7942456B2 (en) * 2008-01-04 2011-05-17 Cerro Flow Products, Inc. Fluid conduits with integral end fittings and associated methods of manufacture and use
CN102950217B (zh) * 2011-08-29 2015-08-12 珠海格力电器股份有限公司 异型管端的成型方法及所用的异型夹模模具
US10054338B2 (en) * 2015-03-19 2018-08-21 Hamilton Sundstrand Corporation Flexible coupling with rotational capability
JP6842145B1 (ja) * 2020-12-04 2021-03-17 サンライズ工業株式会社 曲げパイプの製造方法
EP4311608A1 (fr) 2022-07-27 2024-01-31 Gnutti Transfer S.p.A. Appareil d'usinage mécanique par déformation plastique ou d'assemblage d'une paire de composants, et machine-outil associée comprenant un tel appareil

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US1817854A (en) * 1929-06-11 1931-08-04 Sorensen John Process of producing coupling flanges
US1801171A (en) * 1929-12-12 1931-04-14 Mueller Brass Co Pipe fitting and the process of making the same
DE560936C (de) * 1931-01-13 1932-10-08 Robert Hardmeyer Verfahren zur Herstellung von Metallspulensockeln, insbesondere fuer Metallspulen der Textilindustrie
GB415013A (en) * 1932-11-10 1934-08-16 Cablon Ltd Improvements in and relating to pressure pipe lines and more particularly to pressure pipe lines for electric cable installations
GB570093A (en) * 1944-02-23 1945-06-21 William Alexander Povey Improvements in or relating to forming bulges or corrugations in metal tubes
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FR1496155A (fr) * 1966-06-29 1967-09-29 Procédés de fabrication de tubes munis de bourrelets et d'assemblage de ces tubes
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JPS6127528U (ja) * 1984-07-19 1986-02-19 堀江金属工業株式会社 スプ−ル端のプレス成形金型
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002002255A1 (fr) 2000-06-30 2002-01-10 Witzig & Frank Gmbh Procede et dispositif pour la production de raccords tubulaires a la presse en acier, notamment en acier special
DE10031989A1 (de) * 2000-06-30 2002-01-17 Witzig & Frank Gmbh Verfahren und Vorrichtung zur Herstellung von Pressfittings aus Stahl, insbesondere Edelstahl
DE10031989B4 (de) * 2000-06-30 2007-08-16 Witzig & Frank Gmbh Verfahren und Vorrichtung zur Herstellung von Pressfittings aus Stahl, insbesondere Edelstahl
DE102009044279A1 (de) 2009-10-16 2011-04-21 Mag Europe Gmbh Verfahren zur Herstellung eines Wandanschlussstücks
DE102009044279B4 (de) * 2009-10-16 2013-11-21 Mag Europe Gmbh Verfahren zur Herstellung eines Wandanschlussstücks und zugehöriges Wandanschlussstück

Also Published As

Publication number Publication date
SK281939B6 (sk) 2001-09-11
US5615481A (en) 1997-04-01
ATE162119T1 (de) 1998-01-15
DE59405022D1 (de) 1998-02-19
SK128394A3 (en) 1995-06-07
JP3618127B2 (ja) 2005-02-09
DE4410146C2 (de) 2000-06-15
DK0649689T3 (da) 1998-09-14
EP0649689A1 (fr) 1995-04-26
GR3025910T3 (en) 1998-04-30
JPH07227629A (ja) 1995-08-29
DE4410146A1 (de) 1995-10-12
CZ256694A3 (en) 1996-02-14
ES2111232T3 (es) 1998-03-01
CZ286140B6 (cs) 2000-01-12

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