EP0044795B1 - Sizing tool for expanding tube ends - Google Patents
Sizing tool for expanding tube ends Download PDFInfo
- Publication number
- EP0044795B1 EP0044795B1 EP81420105A EP81420105A EP0044795B1 EP 0044795 B1 EP0044795 B1 EP 0044795B1 EP 81420105 A EP81420105 A EP 81420105A EP 81420105 A EP81420105 A EP 81420105A EP 0044795 B1 EP0044795 B1 EP 0044795B1
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- EP
- European Patent Office
- Prior art keywords
- jaws
- socket
- expansion head
- groove
- retaining
- 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.)
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- 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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/026—Enlarging by means of mandrels
Definitions
- the invention relates to an expansion head for an apparatus for flaring or widening the ends of tubes or the like.
- Apparatuses for flaring the ends of the tubes corresponding to the preamble of claim 1 are already known (French Patent No. 2,371,981). These devices respectively have a body with means for moving a mandrel whose conical end acts in thrust in the corresponding bore of a plurality of concentric and independent jaws in the form of sectors connected by an elastic retaining means, positioned in a circular groove established below the flange common to each aforementioned jaw so as to constitute the actual expansion head, the flange of which bears in the stepped bore of a socket fixed at the end of the body.
- Such devices and in particular their expansion heads have drawbacks caused by the positioning and the very conformation of the elastic means ensuring the retention of the jaws between them.
- This elastic means is housed and positioned in a groove formed circularly at the periphery of the collar of the sleeve, so that it considerably limits the dimensioning of the jaws of the expansion head for the same sleeve. It turns out to be necessary to have several ranges of sockets corresponding to different ranges of dimensions of the jaws of the expansion head, and this results in a significant cost and storage.
- the invention as characterized in the claims overcomes these drawbacks and is remarkable in that all the jaw retaining means are arranged below their common flange to allow a wide range of jaw dimensions with the same socket.
- the elastic, but retractable means for retaining said jaws relative to the bottom of said sleeve is centered and positioned in a groove of the aforementioned jaws, while alternately overflowing the outside diameter of the expansion head in order to ensure its axial retention in height, in combination with on the one hand the underside of the sleeve and on the other hand the opposite flange bearing on the internal shoulder of said sleeve.
- this apparatus comprises a body (1) with displacement means by cam (2 1 ) and lever (2) of a mandrel (3) whose conical end (3 1 ) acts in thrust on a head of expansion (T) housed inside a socket (4) fixed at the end of the body (1).
- the sleeve (4) is tapped at (4 1 ) to be screwed onto the external thread (1 1 ) of the body (1).
- the lower part of the sleeve (4) is pierced at (4 2 ) with a hole of diameter smaller than said internal thread, to form a shoulder (4 3 ) allowing the positioning, the passage and the overflow of the expansion head (T).
- the expansion head (T) is produced from several jaws (5), FIG. 3, generally six, in the form of sectors, which have, from their common internal edge (5 1 ), recesses (5 2 ) flared from their lower end, to form, after circular positioning of the sectors, a conical bore (5 3 ), Figures 1 and 2.
- the different jaws (5) are held circularly between them by an elastic member (0).
- the elastic means (O) for holding the jaws (5) is positioned in a circular groove (5 4 ) established below an externally squared edge (5 5 ), of small diameter, common to each jaw, to constitute, after their circular coaxial mounting, a support flange on the shoulder (4 3 ) of the sleeve (4). This arrangement allows a wide range of jaw dimensions with the same socket.
- the elastic retaining means (O) of the jaws (5) is a spring (6) with at least one flat bearing face (6 1 ) intended to cooperate with the corresponding bottom (5 6 ) of the groove (5 4 ) which constitutes a flat surface. It follows that the flat support face (6 1 ) of the spring, in combination with the bottom of the groove (5 4 ), determines a support along a peripheral surface forming a scope for self-centering and stable positioning in height of the jaws (5), thereby avoiding an imbalance in all directions, in particular during assembly (assembly and disassembly).
- the spring (6) is open at (6 2 ) to give it a certain diametrical expansion when the mandrel (3) is pressed into the resulting bore (5 3 ) of the jaw assembly (5), with a view to their possible spacing.
- the opening (6 2 ) of the spring (6) allows the introduction of a clamp specially shaped to allow its spacing relative to the set of jaws, for its assembly and / or disassembly.
- the spring (6) always with an internal planar support face, may not be open, on the sole condition that it is made of a material capable of undergoing a diametrical expansion by elasticity in particular, with a view to mounting and dismounting on the one hand, and on the other hand so as not to hinder the spacing of the jaws (5).
- an elastic member (A) is suitably profiled for, on the one hand being centered in an external groove (5 7 ) common to the jaws (5), and on the other hand, alternately overflowing the external diameter of the head (T), in order to ensure its axial retention in combination with the underside (4 4 ) of the sleeve (4) and the support flange (5 5 ) of said jaws (5).
- the elastic member (A) is an open pin spring (7), of pentagonal shape ( Figures 1 and 2), the sides (7 1 ) of which are centered and positioned in the groove (5 7 ) and whose projecting vertices (7 2 ) project beyond the outside diameter of the socket (4) to be applied to the underside (4 4 ) of said socket (4), Figures 4 and 6, when the flange ( 5 5 ) is supported on the shoulder (4 3 ) of the sleeve (4). It is obvious that the groove (5 7 ) is machined at a distance (d) from the underside of the collar (5 5 ), equal to the depth of the hole (4 2 ) of the sleeve (4). There is therefore no clearance at height ( Figures 4 and 5).
- the pin spring (7) is open so as not to harm the diametrical expansion of the jaws (5); for this purpose, in a preferred manner, the spring (7) is split in line with one of its vertices (7 2 ).
- the pentagonal shape of the spring (7) is preferred although not limiting.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Paper (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Endoscopes (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Earth Drilling (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Ceramic Products (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Lubricants (AREA)
- Treatment Of Fiber Materials (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Coating With Molten Metal (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Pipe Accessories (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
L'invention concerne une tête d'expansion pour un appareil destiné à évaser ou à élargir les extrémités des tubes ou similaires.The invention relates to an expansion head for an apparatus for flaring or widening the ends of tubes or the like.
On connaît déjà des appareils pour évaser les extrémités des tubes correspondant au préambule de la revendication 1 (Brevet français N° 2 371 981). Ces appareils présentent respectivement un corps avec des moyens de déplacement d'un mandrin dont l'extrémité conique agit en poussée dans l'alésage correspondant d'une pluralité de mors concentriques et indépendants sous forme de secteurs reliés par un moyen élastique de retenue, positionné dans une gorge circulaire établie au-dessous de la collerette commune à chaque mors précité de manière à constituer la tête d'expansion proprement dite dont la collerette prend appui dans l'alésage épaulé d'une douille fixée en bout du corps.Apparatuses for flaring the ends of the tubes corresponding to the preamble of
De tels appareils et notamment leurs têtes d'expansion présentent des inconvénients engendrés par le positionnement et la conformation même du moyen élastique assurant la retenue des mors entre eux. Ce moyen élastique est logé et positionné dans une gorge formée circulairement à la périphérie de la collerette de la douille, de sorte qu'il limite considérablement le dimensionnement des mors de la tête d'expansion pour une même douille. Il s'avère nécessaire d'avoir plusieurs gammes de douilles correspondant à différentes fourchettes de dimensions des mors de la tête d'expansion et il résulte de ce fait, un prix de revient et un stockage importants.Such devices and in particular their expansion heads have drawbacks caused by the positioning and the very conformation of the elastic means ensuring the retention of the jaws between them. This elastic means is housed and positioned in a groove formed circularly at the periphery of the collar of the sleeve, so that it considerably limits the dimensioning of the jaws of the expansion head for the same sleeve. It turns out to be necessary to have several ranges of sockets corresponding to different ranges of dimensions of the jaws of the expansion head, and this results in a significant cost and storage.
Un autre inconvénient majeur est occasionné par la conformation technologique du moyen élastique qui ne permet pas un démontage et remontage faciles de l'ensemble de la tête d'expansion pour l'échange ou la réparation de l'un ou des mors de ladite tête, aussi bien sur le chantier qu'en usine. En effet, les différents moyens élastiques connus exercent leur action de retenue de manière circonférentielle et linéaire autour des jeux de mors, en entraînant ainsi un déséquilibre des forces appliquées qui tend toujours à rejeter les mors les uns par rapport aux autres.Another major drawback is caused by the technological conformation of the elastic means which does not allow easy disassembly and reassembly of the assembly of the expansion head for the exchange or repair of one or more jaws of said head, both on site and in the factory. Indeed, the various known elastic means exert their retaining action in a circumferential and linear manner around the jaw games, thus causing an imbalance of the applied forces which always tends to reject the jaws with respect to each other.
L'invention telle qu'elle est caractérisée dans les revendications remédie à ces inconvénients et est remarquable en ce que tous les moyens de retenue des mors sont disposés au-dessous de leur collerette commune pour autoriser une gamme étendue de dimensions de mors avec la même douille.The invention as characterized in the claims overcomes these drawbacks and is remarkable in that all the jaw retaining means are arranged below their common flange to allow a wide range of jaw dimensions with the same socket.
Le moyen de retenue élastique, mais escamotable desdits mors par rapport au fond de ladite douille, se centre et se positionne dans une gorge des mors précités, tout en débordant en alternance du diamètre extérieur de la tête d'expansion en vue d'assurer sa retenue axiale en hauteur, en combinaison avec d'une part la face de dessous de la douille et d'autre part la collerette opposée prenant appui sur l'épaulement interne de ladite douille.The elastic, but retractable means for retaining said jaws relative to the bottom of said sleeve, is centered and positioned in a groove of the aforementioned jaws, while alternately overflowing the outside diameter of the expansion head in order to ensure its axial retention in height, in combination with on the one hand the underside of the sleeve and on the other hand the opposite flange bearing on the internal shoulder of said sleeve.
D'autres caractéristiques de l'invention se dégageront des revendications dépendantes.Other features of the invention will emerge from the dependent claims.
Pour bien fixer l'objet de l'invention, sans toutefois le limiter, aux figures des dessins annexés :
- La figure 1 est une vue en perspective, avant montage dans la douille d'une tête d'expansion selon l'invention, elle-même représentée avant le positionnement des différents moyens élastiques de retenue.
- La figure 2 est une vue en perspective de la tête d'expansion seule, après montage des moyens élastiques de retenue.
- La figure 3 est une vue en perspective de l'un des mors constituant après assemblage avec ses homologues, la tête d'expansion.
- La figure 4 est une vue en coupe longitudinale montrant une tête d'expansion selon l'invention, logée dans une douille, avant son montage en bout du corps de l'appareil à évaser de tout type connu.
- La figure 5 est une vue semblable à la figure 4, après montage de l'ensemble douille-tête d'expansion, en bout du corps de l'appareil.
- La figure 6 est une vue en coupe transversale selon la ligne 6-6 de la figure 4.
- La figure 7 est une vue en coupe transversale considérée selon la ligne 7-7 de la figure 5.
- Les figures 8, 9 et 10 sont des vues partielles en coupe et à une échelle plus importante, montrant différentes formes d'exécution nullement limitatives du moyen élastique de retenue entre eux des mors.
- Figure 1 is a perspective view, before mounting in the socket of an expansion head according to the invention, itself shown before the positioning of the various elastic retaining means.
- Figure 2 is a perspective view of the expansion head alone, after mounting of the elastic retaining means.
- Figure 3 is a perspective view of one of the jaws constituting after assembly with its counterparts, the expansion head.
- Figure 4 is a longitudinal sectional view showing an expansion head according to the invention, housed in a socket, before mounting at the end of the body of the flaring apparatus of any known type.
- Figure 5 is a view similar to Figure 4, after mounting of the socket-expansion head assembly, at the end of the body of the device.
- Figure 6 is a cross-sectional view along line 6-6 of Figure 4.
- Figure 7 is a cross-sectional view taken along line 7-7 of Figure 5.
- Figures 8, 9 and 10 are partial sectional views on a larger scale, showing different embodiments in no way limit the elastic means for retaining the jaws therebetween.
Selon la présente invention et dans l'exemple nullement limitatif illustré aux dessins, on voit notamment aux figures 4 et 5, un appareil de tout type connu, destiné à évaser des extrémités de tubes. Succinctement, cet appareil comprend un corps (1) avec des moyens de déplacement par came (21) et levier (2) d'un mandrin (3) dont l'extrémité conique (31) agit en poussée sur une tête d'expansion (T) logée à l'intérieur d'une douille (4) fixée en bout du corps (1). D'une manière connue, la douille (4) est taraudée en (41) pour être vissée sur le filetage extérieur (11) du corps (1). Coaxialement au taraudage (41), la partie inférieure de la douille (4) est percée en (42) d'un trou de diamètre inférieur audit taraudage, pour constituer un épaulement (43) autorisant le positionnement, le passage et le débordement de la tête d'expansion (T).According to the present invention and in the nonlimiting example illustrated in the drawings, we can see in particular in FIGS. 4 and 5, an apparatus of any known type, intended to flare ends of tubes. Briefly, this apparatus comprises a body (1) with displacement means by cam (2 1 ) and lever (2) of a mandrel (3) whose conical end (3 1 ) acts in thrust on a head of expansion (T) housed inside a socket (4) fixed at the end of the body (1). In a known manner, the sleeve (4) is tapped at (4 1 ) to be screwed onto the external thread (1 1 ) of the body (1). Coaxial with the internal thread (4 1 ), the lower part of the sleeve (4) is pierced at (4 2 ) with a hole of diameter smaller than said internal thread, to form a shoulder (4 3 ) allowing the positioning, the passage and the overflow of the expansion head (T).
La tête d'expansion (T) est réalisée à partir de plusieurs mors (5), figure 3, généralement six, sous forme de secteurs, qui présentent à partir de leur arête intérieure commune (51), des évidements (52) évasés à partir de leur extrémité basse, pour constituer, après positionnement circulaire des secteurs, un alésage conique (53), figures 1 et 2.The expansion head (T) is produced from several jaws (5), FIG. 3, generally six, in the form of sectors, which have, from their common internal edge (5 1 ), recesses (5 2 ) flared from their lower end, to form, after circular positioning of the sectors, a conical bore (5 3 ), Figures 1 and 2.
Comme on l'a vu précédemment, les différents mors (5) sont maintenus circulairement entre eux par un organe élastique (0). Selon l'invention, le moyen élastique (O) de retenue des mors (5) est positionné dans une gorge circulaire (54) établie en dessous d'un rebord équerré extérieurement (55), de faible diamètre, commun à chaque mors, pour constituer, après leur montage coaxial circulaire, une collerette d'appui sur l'épaulement (43) de la douille (4). Cette disposition autorise une gamme étendue de dimensions de mors avec la même douille.As seen above, the different jaws (5) are held circularly between them by an elastic member (0). According to the invention, the elastic means (O) for holding the jaws (5) is positioned in a circular groove (5 4 ) established below an externally squared edge (5 5 ), of small diameter, common to each jaw, to constitute, after their circular coaxial mounting, a support flange on the shoulder (4 3 ) of the sleeve (4). This arrangement allows a wide range of jaw dimensions with the same socket.
En effet, il est possible de réduire en épaisseur et en diamètre la collerette d'appui (55) puisque cette dernière n'est plus équipée, en opposition avec les réalisations antérieures connues, du moyen élastique de retenue (O) qui occupait une certaine place dans le fond du taraudage (41) de la douille (4) et nécessitait des dimensions suffisantes de la collerette pour son positionnement et centrage. Il subsiste un jeu suffisamment important pour couvrir les différentes gammes dimensionnelles de têtes d'expansion.Indeed, it is possible to reduce the thickness and diameter of the support flange (5 5 ) since the latter is no longer equipped, in opposition to the known prior embodiments, with the elastic retaining means (O) which occupied a some place in the bottom of the thread (4 1 ) of the sleeve (4) and required sufficient dimensions of the flange for its positioning and centering. There is still enough clearance to cover the different dimensional ranges of expansion heads.
D'autre part, d'une manière particulièrement importante, le moyen élastique de retenue (O) des mors (5), est un ressort (6) avec au moins une face plane d'appui (61) destinée à coopérer avec le fond correspondant (56) de la gorge (54) qui constitue une surface plane. Il en résulte que la face plane d'appui (61) du ressort, en combinaison avec le fond de la gorge (54), détermine un appui suivant une surface périphérique formant portée pour l'auto-centrage et le positionnement stable en hauteur des mors (5), en leur évitant, par voie de conséquence, un déséquilibre dans tous les sens, notamment en cours d'assemblage (montage et démontage).On the other hand, in a particularly important way, the elastic retaining means (O) of the jaws (5), is a spring (6) with at least one flat bearing face (6 1 ) intended to cooperate with the corresponding bottom (5 6 ) of the groove (5 4 ) which constitutes a flat surface. It follows that the flat support face (6 1 ) of the spring, in combination with the bottom of the groove (5 4 ), determines a support along a peripheral surface forming a scope for self-centering and stable positioning in height of the jaws (5), thereby avoiding an imbalance in all directions, in particular during assembly (assembly and disassembly).
A partir de cette conception de base du ressort (6) dont la seule condition nécessaire et suffisante est d'avoir une face interne d'appui plane (61), plusieurs formes en section dudit ressort peuvent être envisagées, comme illustré nullement limitativement aux figures 8, 9 et 10. Le fond de la gorge (54) demeure toujours plan, en étant parallèle aux génératrices du corps de la tête d'expansion (T).From this basic design of the spring (6), the only necessary and sufficient condition of which is to have an internal flat support face (6 1 ), several shapes in section of said spring can be envisaged, as illustrated in no way limited to Figures 8, 9 and 10. The bottom of the groove (5 4 ) always remains flat, being parallel to the generatrices of the body of the expansion head (T).
On voit également, notamment aux figures 1 et 2, que le ressort (6) est ouvert en (62) pour lui conférer une certaine expansion diamétrale lors de l'enfoncement du mandrin (3) dans l'alésage résultant (53) de l'assemblage des mors (5), en vue de leur écartement éventuel. De même, l'ouverture (62) du ressort (6) permet l'introduction d'une pince spécialement conformée pour autoriser son écartement par rapport au jeu de mors, en vue de son montage et/ou démontage.It can also be seen, in particular in FIGS. 1 and 2, that the spring (6) is open at (6 2 ) to give it a certain diametrical expansion when the mandrel (3) is pressed into the resulting bore (5 3 ) of the jaw assembly (5), with a view to their possible spacing. Similarly, the opening (6 2 ) of the spring (6) allows the introduction of a clamp specially shaped to allow its spacing relative to the set of jaws, for its assembly and / or disassembly.
Eventuellement, le ressort (6), avec toujours une face interne d'appui plane, peut ne pas être ouvert, à la seule condition qu'il soit réalisé en une matière susceptible de subir une expansion diamétrale par élasticité notamment, en vue d'un montage et démontage d'une part, et d'autre part pour ne pas gêner l'écartement des mors (5).Optionally, the spring (6), always with an internal planar support face, may not be open, on the sole condition that it is made of a material capable of undergoing a diametrical expansion by elasticity in particular, with a view to mounting and dismounting on the one hand, and on the other hand so as not to hinder the spacing of the jaws (5).
On prévoit d'équiper la tête d'expansion (T) d'un moyen de retenue escamotable par rapport à la face de dessous (44) de la douille (4), tout en permettant son déplacement en expansion ou en retreinte, lors de l'action du mandrin (3), et également son démontage. Dans ce but, on utilise un organe élastique (A) convenablement profilé pour, d'une part se centrer dans une gorge extérieure (57) commune aux mors (5), et d'autre part, déborder en alternance du diamètre extérieur de la tête (T), en vue d'assurer sa retenue axiale en combinaison avec la face de dessous (44) de la douille (4) et la collerette d'appui (55) desdits mors (5).Provision is made to equip the expansion head (T) with a retractable retaining means with respect to the underside (4 4 ) of the sleeve (4), while allowing its displacement in expansion or shrinkage, during of the action of the mandrel (3), and also its disassembly. For this purpose, an elastic member (A) is suitably profiled for, on the one hand being centered in an external groove (5 7 ) common to the jaws (5), and on the other hand, alternately overflowing the external diameter of the head (T), in order to ensure its axial retention in combination with the underside (4 4 ) of the sleeve (4) and the support flange (5 5 ) of said jaws (5).
Selon une réalisation particulièrement intéressante, l'organe élastique (A) est un ressort ouvert en épingle (7), de forme pentagonale (figures 1 et 2), dont les côtés (71) sont centrés et positionnés dans la gorge (57) et dont les sommets en saillie (72) débordent du diamètre extérieur de la douille (4) pour s'appliquer sur la face de dessous (44) de ladite douille (4), figures 4 et 6, lorsque la collerette (55) est en appui sur l'épaulement (43) de la douille (4). Il est bien évident que la gorge (57) est usinée à une distance (d) du dessous de la collerette (55), égale à la profondeur du trou (42) de la douille (4). Il n'y a donc pas de jeu en hauteur (figures 4 et 5).According to a particularly advantageous embodiment, the elastic member (A) is an open pin spring (7), of pentagonal shape (Figures 1 and 2), the sides (7 1 ) of which are centered and positioned in the groove (5 7 ) and whose projecting vertices (7 2 ) project beyond the outside diameter of the socket (4) to be applied to the underside (4 4 ) of said socket (4), Figures 4 and 6, when the flange ( 5 5 ) is supported on the shoulder (4 3 ) of the sleeve (4). It is obvious that the groove (5 7 ) is machined at a distance (d) from the underside of the collar (5 5 ), equal to the depth of the hole (4 2 ) of the sleeve (4). There is therefore no clearance at height (Figures 4 and 5).
Comme précédemment indiqué, le ressort en épingle (7) est ouvert pour ne pas nuire à l'expansion diamétrale des mors (5) ; à cet effet, d'une manière préférée, le ressort (7) est fendu au droit de l'un de ses sommets (72). La forme pentagonale du ressort (7) est préférée quoique non limitative.As previously indicated, the pin spring (7) is open so as not to harm the diametrical expansion of the jaws (5); for this purpose, in a preferred manner, the spring (7) is split in line with one of its vertices (7 2 ). The pentagonal shape of the spring (7) is preferred although not limiting.
Il est bien évident que dans le cas de têtes d'expansion et de douilles de grandes dimensions, ces dernières peuvent coopérer avec une bague intercalaire susceptible d'être vissée en bout du corps (1) de l'appareil, de telles dispositions étant parfaitement connues pour l'homme de l'art.It is obvious that in the case of large expansion heads and sockets, the latter can cooperate with an intermediate ring capable of being screwed at the end of the body (1) of the device, such arrangements being perfectly known to those skilled in the art.
Les avantages de cette tête d'expansion ressortent bien de la description, on souligne en particulier :
- - la possibilité d'utiliser la même douille pour plusieurs gammes dimensionnelles de jeux de mors, par suite des dimensions réduites de la collerette qui assure uniquement la retenue de la tête d'expansion à l'intérieur de la douille ;
- - l'auto-centrage et le positionnement stable en hauteur des mors, en leur évitant un déséquilibre dans tous les sens, conférés grâce à la face interne rigoureusement plane du ressort de retenue desdits mors ;
- - le maintien et le positionnement en hauteur de la tête d'expansion par rapport à la douille ;
- - les possibilités de séparer la tête d'expansion et la douille, sans enlever le moyen élastique reliant les mors entre eux.
- - The possibility of using the same socket for several dimensional ranges of jaw sets, due to the reduced dimensions of the flange which only ensures the retention of the expansion head inside the socket;
- - Self-centering and stable positioning in height of the jaws, avoiding an imbalance in all directions, conferred by the strictly flat internal face of the retaining spring of said jaws;
- - maintaining and positioning the expansion head in height relative to the bushing;
- - The possibilities of separating the expansion head and the socket, without removing the elastic means connecting the jaws together.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81420105T ATE11115T1 (en) | 1980-07-18 | 1981-07-16 | EXPANDING HEAD FOR EXPANDING PIPE ENDS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8016173 | 1980-07-18 | ||
FR8016173A FR2486834A1 (en) | 1980-07-18 | 1980-07-18 | EXPANSION HEAD FOR AN APPARATUS FOR EXHAUSTING OR EXTENDING TUBES OR THE LIKE |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0044795A2 EP0044795A2 (en) | 1982-01-27 |
EP0044795A3 EP0044795A3 (en) | 1982-05-12 |
EP0044795B1 true EP0044795B1 (en) | 1985-01-09 |
Family
ID=9244417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81420105A Expired EP0044795B1 (en) | 1980-07-18 | 1981-07-16 | Sizing tool for expanding tube ends |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0044795B1 (en) |
AT (1) | ATE11115T1 (en) |
BE (1) | BE889656A (en) |
CH (1) | CH641383A5 (en) |
DE (2) | DE3168139D1 (en) |
DK (1) | DK309481A (en) |
FI (1) | FI812242L (en) |
FR (1) | FR2486834A1 (en) |
IT (1) | IT1138063B (en) |
NO (1) | NO153720C (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4615198A (en) * | 1985-06-26 | 1986-10-07 | Westinghouse Electric Corp. | Apparatus and method for reforming and rolling tube ends |
DE4202348C1 (en) * | 1992-01-29 | 1993-06-09 | Rothenberger Werkzeuge-Maschinen Gmbh, 6233 Kelkheim, De | Tube end expansion tool - has holding drillings for guide pins at inner and outer flange sectors |
CH699306A1 (en) * | 2008-08-13 | 2010-02-15 | Finemon Ag | Flaring tool for pipes and pipe pressing clutch. |
DE202010004948U1 (en) | 2010-04-13 | 2011-09-01 | Rehau Ag + Co. | Expander head for hollow workpieces with guided segments |
DE102012100894A1 (en) | 2012-02-03 | 2013-08-08 | Rehau Ag + Co | Expander head for expander tools, this comprehensive expansion tool and their use |
DE202012104450U1 (en) | 2012-11-19 | 2014-02-25 | Rehau Ag + Co | Expansion head for expansion tools and this comprehensive expansion tool |
CN106584877B (en) * | 2016-12-09 | 2023-05-30 | 重庆寅悦恒工贸有限公司 | Pipe fitting centering mechanism for vehicle |
DE202019107067U1 (en) * | 2019-12-18 | 2021-03-19 | Rehau Ag + Co | Expansion head for expansion tools as well as this comprehensive expansion tool |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1291839A (en) * | 1969-07-18 | 1972-10-04 | Dale Ltd John | A taper-expanding mandrel |
US3888102A (en) * | 1972-10-10 | 1975-06-10 | Salvatore A Nigido | Swedger apparatus |
DE2505915A1 (en) * | 1975-02-13 | 1976-08-26 | Rothenberger Schweisstech | DEVICE FOR EXPANSION OF PIPE ENDS |
DE2552607C2 (en) * | 1975-11-24 | 1985-08-01 | Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt | Hand tool for expanding pipe ends |
DE2654102C2 (en) * | 1976-11-29 | 1984-01-05 | Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt | Expansion head for pipe expanding devices with exchangeable expansion jaws |
-
1980
- 1980-07-18 FR FR8016173A patent/FR2486834A1/en active Granted
-
1981
- 1981-07-10 CH CH453081A patent/CH641383A5/en not_active IP Right Cessation
- 1981-07-13 DK DK309481A patent/DK309481A/en not_active Application Discontinuation
- 1981-07-14 NO NO812413A patent/NO153720C/en unknown
- 1981-07-15 IT IT22943/81A patent/IT1138063B/en active
- 1981-07-16 FI FI812242A patent/FI812242L/en not_active Application Discontinuation
- 1981-07-16 AT AT81420105T patent/ATE11115T1/en not_active IP Right Cessation
- 1981-07-16 DE DE8181420105T patent/DE3168139D1/en not_active Expired
- 1981-07-16 DE DE198181420105T patent/DE44795T1/en active Pending
- 1981-07-16 EP EP81420105A patent/EP0044795B1/en not_active Expired
- 1981-07-17 BE BE2/59269A patent/BE889656A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BE889656A (en) | 1981-11-16 |
FI812242L (en) | 1982-01-19 |
DE3168139D1 (en) | 1985-02-21 |
FR2486834B1 (en) | 1985-04-05 |
NO153720B (en) | 1986-02-03 |
EP0044795A3 (en) | 1982-05-12 |
IT1138063B (en) | 1986-09-10 |
ATE11115T1 (en) | 1985-01-15 |
FR2486834A1 (en) | 1982-01-22 |
NO812413L (en) | 1982-01-19 |
EP0044795A2 (en) | 1982-01-27 |
IT8122943A0 (en) | 1981-07-15 |
DE44795T1 (en) | 1983-08-04 |
NO153720C (en) | 1986-05-14 |
CH641383A5 (en) | 1984-02-29 |
DK309481A (en) | 1982-01-19 |
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