EP2317406A1 - Fixation system of a part without force-fitting or bonding - Google Patents

Fixation system of a part without force-fitting or bonding Download PDF

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Publication number
EP2317406A1
EP2317406A1 EP10186608A EP10186608A EP2317406A1 EP 2317406 A1 EP2317406 A1 EP 2317406A1 EP 10186608 A EP10186608 A EP 10186608A EP 10186608 A EP10186608 A EP 10186608A EP 2317406 A1 EP2317406 A1 EP 2317406A1
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EP
European Patent Office
Prior art keywords
axis
recess
fastening
fastening system
hole
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.)
Granted
Application number
EP10186608A
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German (de)
French (fr)
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EP2317406B1 (en
Inventor
Pierre Cusin
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox SA
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Priority to EP10186608.5A priority Critical patent/EP2317406B1/en
Publication of EP2317406A1 publication Critical patent/EP2317406A1/en
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Publication of EP2317406B1 publication Critical patent/EP2317406B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • G04B13/022—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft with parts made of hard material, e.g. silicon, diamond, sapphire, quartz and the like
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49959—Nonresilient fastener
    • Y10T29/49961—At least one part nonmetallic

Definitions

  • the invention relates to a fastening system of a piece of material having no usable plastic field, that is to say which is not huntable and, more particularly, such a piece made of a material to silicon base.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a system for fixing a piece of material having no plastic field usable on an axis that does not use either the driving or gluing.
  • the invention relates to a fastening system of a piece of material having no usable plastic field comprising a fastening device on an axis, said axis passing through a hole of said part characterized in that the device of solidarity has a recess communicating with the hole of said piece and securing means attached to the axis and at least partially conforming to the shape of the recess in order to make integral the movement of the workpiece with that of the axis without driving or gluing .
  • the piece of material having no usable plastic field is not solicited in its plastic field (no hunting) but only mechanically moved by the axis assembly - securing means.
  • the invention also relates to a timepiece characterized in that it comprises a fastening system according to one of the preceding variants.
  • the invention will be explained from a balance spring-spiral resonator generally annotated 1.
  • the invention may also for example apply to a mobile or an anchor in or outside the field of watchmaking.
  • the sprung balance resonator 1 comprises a pivot axis 3, a rocker 5 and a spiral 7 and a fastening system 9.
  • the pivot axis 3, which may also be called balance shaft in the example of the figure 1 is used to rotate the balance 5 and the spiral 7 between two bearings, for example arranged respectively in a bridge and a plate (not shown).
  • the figure 2 shows an enlarged view of the hairspring 7 which, for the explanation below, is a piece of material having no usable plastic range, such as, for example, crystalline silicon, crystalline silica, crystalline alumina, silicon nitride or even silicon carbide.
  • the rocker 5 can also be made of such a material and, therefore, also be mounted on the axis 3 by means of a second fastening system 9.
  • the spiral 7 comprises a ferrule 2 mounted in one piece.
  • a spiral 7 may for example be obtained from a wafer which, by photolithography of a photosensitive resin and then an attack of parts of the wafer not containing resin, is etched in all the thickness.
  • the fastening system 9 is intended to secure the spiral 7 with the axis 3.
  • the fastening system 9 comprises a fastening device 11 having a recess 4 and securing means 6.
  • the recess 4 in the example of the figure 2 communicates with the pinhole 8 of the shell 2.
  • the recess 4 thus forms a slope 10 between the substantially vertical inner wall of the pinhole 8 and the substantially horizontal upper surface of the shell 2 as best illustrated in FIG. figure 4 .
  • the slope 10 thus forms a blind recess which is radiated, that is to say without a ridge, and which surrounds the securing means 6.
  • Such a slope can be obtained from the teaching of the document CH 1549/09 in the name of the Applicant which is incorporated by reference in the present description.
  • the securing means 6 are intended to attach to the axis 3 and to marry at least partially the shape of the recess 4.
  • the securing means 6 comprise an addition of metal material which, according to three embodiments can be obtained by a partial melting of the axis 3 or by melting of a solder or by a hot fitting of said metallic material in amorphous form.
  • the hardening of the addition of material makes it possible to attach the axis 3 preferentially metallic but also to form a tenon cooperating with the recess 4, which then acts as a mortise.
  • the securing means 6 did not need to attach to the shell 2 but only to the axis 3.
  • the rotational movement of the axis 3, which makes print a same movement to the means 6, also mechanically causes the ferrule 2, that is to say the spiral 7, by said tenon-mortise connection. Therefore, advantageously according to the invention, the spiral 7 material having no usable plastic field is not solicited in its field of plastic.
  • the securing device 11 further comprises a flange 13 mounted on the axis 3 to serve as a scope for the spiral 7 at its ferrule 2.
  • this configuration allows the ferrule 2 to be blocked relative to the length of the axis 3 by contact between the collar 13 forming the bearing and the fastening means 6 forming tenon.
  • a first step a the process begins with the manufacture of the part 7 with a hole 8 intended to receive the axis 3 and a recess 4 communicating with the hole 8 as illustrated in FIG. figure 2 .
  • a second step b) which can be performed before, during or after step a
  • the process continues with the manufacture of the axis 3 preferably with the bearing surface 13.
  • a third step c) the process continues with the assembly of the axis 3 in the hole 8 of the spiral 7, preferably up to the stop against the flange 13 of the axis 3.
  • the method then comprises a fourth step d) intended to fill the recess 4 by the securing means 6 such as, for example, a metallic material so that it matches the shape of the recess and a part of the outer diameter of the recess. axis 3.
  • the process ends with a fifth and last step e) intended to harden the metal material to secure the spiral 7 with the axis 3.
  • step d) is carried out by a localized fusion of the axis 3, that is to say that a partial melting of the axis 3 at the level of the zone 12 is performed to that a liquid rendered portion of the axis 3 flows into the recess 4 as illustrated in FIGS. Figures 4 and 5 .
  • a melting of step d) is preferably carried out by high energy radiation by means of, for example, a laser source.
  • step d) is carried out by the melting of a solder, that is to say that a melting of a metallic material between the zone 12 and the recess 4 is carried out for it is made liquid and flows into the recess 4 similarly to the first embodiment.
  • a fusion according to the second embodiment is also preferably carried out by high energy radiation by means of, for example, a laser source.
  • step d) is carried out by hot pressing said metal material in amorphous form, that is to say that the metallic material is heated between its glass transition temperature and that of crystallization and then pressed in the recess 4 so that it adopts the imprint of said recess 4.
  • the cooling of the securing means 6 allows them to be attached to the axis 3 and to form said tenon which will make it possible to drive the spiral 7 via its ferrule 2.
  • the part that is to say the spiral 7 is made of material having no usable plastic field, it is possible to make it integral with an axis 3 without having to hunt or to do a collage.
  • the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • the slope 10 may be replaced by a vertical wall and a horizontal wall, that is to say that the recess 4 has a bottom substantially parallel to the upper surface that the ferrule 2.
  • the recess 4 is blind, that is to say, it does not cross through the part to be made integral.
  • the part in the example above is a spring 7 whose ferrule 2 has the hole 8 and the recess 4
  • the invention is perfectly applicable to a movable type part whose hub has the hole and the recess or to an exhaust anchor piece whose rod has the hole and the recess.
  • these examples relate to the field of watchmaking however, the invention can be applied to other fields.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connection Of Plates (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Toys (AREA)
  • Insertion Pins And Rivets (AREA)
  • Micromachines (AREA)

Abstract

The system (9) has an integration device (11) on a pivoting axle (3) traversing a hole of a part e.g. spring, where the part is made of silicon based material. The integration device comprises a recess (4) connected with the hole of the part. An integration unit (6) is attached to the axle, where the unit partially adopts shape of the recess for integration of movement of the part with movement of the axle without pressing or bonding. An independent claim is also included for a method for fixing a part on a pivoting axle.

Description

Domaine de l'inventionField of the invention

L'invention se rapporte à un système de fixation d'une pièce en matériau ne possédant pas de domaine plastique utilisable, c'est-à-dire qui n'est pas chassable et, plus particulièrement, une telle pièce composée en un matériau à base de silicium.The invention relates to a fastening system of a piece of material having no usable plastic field, that is to say which is not huntable and, more particularly, such a piece made of a material to silicon base.

Arrière plan de l'inventionBackground of the invention

Il est connu dans l'horlogerie de monter des pièces sur des axes par chassage, c'est-à-dire par déformation plastique de la pièce et/ou de l'axe. Avec l'avènement des pièces en silicium, il devient impossible de les fixer sur des axes par chassage sous peine de les briser. Dans les productions actuelles, on utilise par exemple un matériau adhésif du type colle polymère pour solidariser les pièces silicium sur leurs axes ou un autre système de blocage impliquant une troisième pièce mécanique. Cependant, ces solutions ne sont pas satisfaisantes car, pour la première solution, le vieillissement des matériaux adhésifs est aléatoire et parfois très prématuré et, pour la deuxième solution, trop complexe à mettre en oeuvre.It is known in the watch industry to mount parts on shafts by driving, that is to say by plastic deformation of the part and / or axis. With the advent of silicon parts, it becomes impossible to fix them on shafts by chase at the risk of breaking them. In current productions, for example, an adhesive material of the polymer glue type is used to secure the silicon parts on their axes or another blocking system involving a third mechanical part. However, these solutions are not satisfactory because, for the first solution, the aging of the adhesive materials is random and sometimes very premature and, for the second solution, too complex to implement.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est de pallier tout ou partie les inconvénients cités précédemment en proposant un système de fixation d'une pièce en matériau ne possédant pas de domaine plastique utilisable sur un axe qui n'a recours ni au chassage ni au collage.The object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a system for fixing a piece of material having no plastic field usable on an axis that does not use either the driving or gluing.

A cet effet, l'invention se rapporte à un système de fixation d'une pièce en matériau ne possédant pas de domaine plastique utilisable comportant un dispositif de solidarisation sur un axe, ledit axe traversant un trou de ladite pièce caractérisé en ce que le dispositif de solidarisation comporte un évidement communiquant avec le trou de ladite pièce et des moyens de solidarisation attachés à l'axe et épousant au moins partiellement la forme de l'évidement afin de rendre solidaire le mouvement de la pièce avec celui de l'axe sans chassage ni collage.For this purpose, the invention relates to a fastening system of a piece of material having no usable plastic field comprising a fastening device on an axis, said axis passing through a hole of said part characterized in that the device of solidarity has a recess communicating with the hole of said piece and securing means attached to the axis and at least partially conforming to the shape of the recess in order to make integral the movement of the workpiece with that of the axis without driving or gluing .

Avantageusement, la pièce en matériau ne possédant pas de domaine plastique utilisable n'est pas sollicitée dans son domaine plastique (aucun chassage) mais uniquement déplacé mécaniquement par l'ensemble axe - moyens de solidarisation.Advantageously, the piece of material having no usable plastic field is not solicited in its plastic field (no hunting) but only mechanically moved by the axis assembly - securing means.

Conformément à d'autres caractéristiques avantageuses de l'invention :

  • l'évidement est borgne afin de former une mortaise ;
  • l'évidement est rayonné ;
  • les moyens de solidarisation comportent un ajout de matière métallique ;
  • l'ajout de matière métallique est obtenu par une fusion partielle dudit axe ou par fusion d'une brasure ou par emmanchement à chaud de ladite matière métallique sous forme amorphe ;
  • le dispositif de solidarisation comporte de plus une collerette montée sur l'axe afin de servir de portée pour ladite pièce ;
  • le matériau ne possédant pas de domaine plastique utilisable est à base de silicium.
According to other advantageous features of the invention:
  • the recess is one-eyed to form a mortise;
  • the recess is radiated;
  • the securing means comprise an addition of metallic material;
  • the addition of metal material is obtained by a partial melting of said axis or by melting of a solder or by hot fitting said metal material in amorphous form;
  • the securing device further comprises a flange mounted on the axis to serve as a scope for said part;
  • the material having no usable plastic domain is based on silicon.

L'invention se rapporte également à une pièce d'horlogerie caractérisée en ce qu'elle comporte un système de fixation selon l'une des variantes précédentes.The invention also relates to a timepiece characterized in that it comprises a fastening system according to one of the preceding variants.

Enfin, l'invention se rapporte à un procédé de fixation d'une pièce en matériau ne possédant pas de domaine plastique utilisable sur un axe caractérisé en ce qu'il comporte les étapes suivantes :

  1. a) fabriquer la pièce avec un trou destiné à recevoir ledit axe et un évidement communiquant avec le trou ;
  2. b) fabriquer ledit axe ;
  3. c) assembler l'axe dans le trou de la pièce ;
  4. d) remplir l'évidement par un matériau métallique afin qu'il épouse la forme de l'évidement et une partie du diamètre extérieur dudit axe ;
  5. e) durcir le matériau métallique afin de solidariser la pièce avec l'axe sans chassage ni collage.
Finally, the invention relates to a method of fixing a piece of material having no plastic domain usable on an axis, characterized in that it comprises the following steps:
  1. a) fabricating the part with a hole for receiving said axis and a recess communicating with the hole;
  2. b) manufacture said axis;
  3. c) assemble the shaft into the hole in the room;
  4. d) filling the recess with a metallic material to conform to the shape of the recess and a portion of the outer diameter of said axis;
  5. e) harden the metal material in order to secure the piece with the axis without driving or gluing.

Conformément à d'autres caractéristiques avantageuses de l'invention :

  • l'étape d) est réalisée par une fusion localisée de l'axe ou par une fusion d'une brasure au moyen d'un rayonnement haute énergie ;
  • l'étape d) est réalisée par emmanchement à chaud dudit matériau métallique sous forme amorphe ;
  • l'étape c) continue jusqu'à ce que la pièce bute contre une collerette de l'axe formée lors de l'étape b) ;
  • le matériau ne possédant pas de domaine plastique utilisable est à base de silicium.
According to other advantageous features of the invention:
  • step d) is carried out by a localized fusion of the axis or by a fusion of a solder by means of high energy radiation;
  • step d) is carried out by heat-fitting said metal material in amorphous form;
  • step c) continues until the piece abuts against a flange of the axis formed in step b);
  • the material having no usable plastic domain is based on silicon.

Description sommaire des dessinsBrief description of the drawings

D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation d'un résonateur balancier-spiral selon l'invention ;
  • la figure 2 est une représentation d'un spiral selon l'invention ;
  • la figure 3 est une représentation partielle de la figure 2 ;
  • la figure 4 est une représentation en coupe de la figure 3 ;
  • la figure 5 est une représentation similaire à la figure 4 dans laquelle est montré un dispositif de fixation selon l'invention.
Other particularities and advantages will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is a representation of a sprung-balance resonator according to the invention;
  • the figure 2 is a representation of a hairspring according to the invention;
  • the figure 3 is a partial representation of the figure 2 ;
  • the figure 4 is a sectional representation of the figure 3 ;
  • the figure 5 is a representation similar to the figure 4 in which is shown a fixing device according to the invention.

Description détaillée des modes de réalisation préférésDetailed Description of the Preferred Embodiments

Dans l'exemple illustré à la figure 1, l'invention sera expliquée à partir d'un résonateur balancier-spiral généralement annoté 1. Cependant, l'invention peut également par exemple s'appliquer à un mobile ou une ancre dans ou en dehors du domaine de l'horlogerie.In the example shown in figure 1 , the invention will be explained from a balance spring-spiral resonator generally annotated 1. However, the invention may also for example apply to a mobile or an anchor in or outside the field of watchmaking.

Le résonateur balancier-spiral 1 comporte un axe de pivotement 3, un balancier 5 et un spiral 7 ainsi qu'un système de fixation 9. L'axe de pivotement 3, qui peut également être dénommé axe de balancier dans l'exemple de la figure 1, est utilisé pour monter à rotation le balancier 5 et le spiral 7 entre deux paliers par exemple aménagés respectivement dans un pont et une platine (non représentés).The sprung balance resonator 1 comprises a pivot axis 3, a rocker 5 and a spiral 7 and a fastening system 9. The pivot axis 3, which may also be called balance shaft in the example of the figure 1 , is used to rotate the balance 5 and the spiral 7 between two bearings, for example arranged respectively in a bridge and a plate (not shown).

La figure 2 présente une vue agrandie du spiral 7 qui, pour l'explication ci-dessous, est une pièce en matériau ne possédant pas de domaine plastique utilisable comme, par exemple, du silicium cristallin, de la silice cristalline, de l'alumine cristalline, du nitrure de silicium ou même du carbure de silicium. Cependant, le balancier 5 peut également être fabriqué d'un tel matériau et, par conséquent, être également monté sur l'axe 3 à l'aide d'un deuxième système de fixation 9.The figure 2 shows an enlarged view of the hairspring 7 which, for the explanation below, is a piece of material having no usable plastic range, such as, for example, crystalline silicon, crystalline silica, crystalline alumina, silicon nitride or even silicon carbide. However, the rocker 5 can also be made of such a material and, therefore, also be mounted on the axis 3 by means of a second fastening system 9.

Préférentiellement, le spiral 7 comporte une virole 2 montée en une seule pièce. Un tel spiral 7 peut par exemple être obtenu à partir d'une plaquette qui, par photolithographie d'une résine photosensible puis d'une attaque des parties de la plaquette ne comportant pas de résine, est gravée selon toute l'épaisseur.Preferably, the spiral 7 comprises a ferrule 2 mounted in one piece. Such a spiral 7 may for example be obtained from a wafer which, by photolithography of a photosensitive resin and then an attack of parts of the wafer not containing resin, is etched in all the thickness.

Selon l'invention, le système de fixation 9 est destiné à solidariser le spiral 7 avec l'axe 3. Ainsi, le système de fixation 9 comporte un dispositif de solidarisation 11 comportant un évidement 4 et des moyens de solidarisation 6. L'évidement 4 dans l'exemple de la figure 2 communique avec le trou d'axe 8 de la virole 2. L'évidement 4 forme ainsi une pente 10 entre la paroi interne sensiblement verticale du trou d'axe 8 et la surface supérieure sensiblement horizontale de la virole 2 comme mieux illustré à la figure 4. La pente 10 forme ainsi un évidement borgne qui est rayonné, c'est-à-dire sans arête, et qui entoure les moyens de solidarisation 6. Une telle pente 10 peut être obtenue à partir de l'enseignement du document CH 1549/09 au nom de la Demanderesse qui est incorporé par référence à la présente description.According to the invention, the fastening system 9 is intended to secure the spiral 7 with the axis 3. Thus, the fastening system 9 comprises a fastening device 11 having a recess 4 and securing means 6. The recess 4 in the example of the figure 2 communicates with the pinhole 8 of the shell 2. The recess 4 thus forms a slope 10 between the substantially vertical inner wall of the pinhole 8 and the substantially horizontal upper surface of the shell 2 as best illustrated in FIG. figure 4 . The slope 10 thus forms a blind recess which is radiated, that is to say without a ridge, and which surrounds the securing means 6. Such a slope can be obtained from the teaching of the document CH 1549/09 in the name of the Applicant which is incorporated by reference in the present description.

Les moyens de solidarisation 6 sont destinés à s'attacher à l'axe 3 et à épouser au moins partiellement la forme de l'évidement 4. Préférentiellement, les moyens de solidarisation 6 comportent un ajout de matière métallique qui, selon trois modes de réalisation, peut être obtenu par une fusion partielle de l'axe 3 ou par fusion d'une brasure ou encore par un emmanchement à chaud de ladite matière métallique sous forme amorphe.The securing means 6 are intended to attach to the axis 3 and to marry at least partially the shape of the recess 4. Preferably, the securing means 6 comprise an addition of metal material which, according to three embodiments can be obtained by a partial melting of the axis 3 or by melting of a solder or by a hot fitting of said metallic material in amorphous form.

Ainsi, comme visible à la figure 5, le durcissement de l'ajout de matière permet d'attacher l'axe 3 préférentiellement métallique mais également de former un tenon coopérant avec l'évidement 4, lequel agit alors comme une mortaise.So, as visible at the figure 5 , the hardening of the addition of material makes it possible to attach the axis 3 preferentially metallic but also to form a tenon cooperating with the recess 4, which then acts as a mortise.

On comprend donc que les moyens de solidarisation 6 n'ont pas nécessité à s'attacher à la virole 2 mais uniquement à l'axe 3. Toutefois, le déplacement à rotation de l'axe 3, qui fait imprimer un même mouvement aux moyens de solidarisation 6, entraîne également mécaniquement la virole 2, c'est-à-dire la spiral 7, par ladite liaison tenon - mortaise. Par conséquent, avantageusement selon l'invention, le spiral 7 en matériau ne possédant pas de domaine plastique utilisable n'est pas sollicitée dans son domaine plastique.It is therefore understood that the securing means 6 did not need to attach to the shell 2 but only to the axis 3. However, the rotational movement of the axis 3, which makes print a same movement to the means 6, also mechanically causes the ferrule 2, that is to say the spiral 7, by said tenon-mortise connection. Therefore, advantageously according to the invention, the spiral 7 material having no usable plastic field is not solicited in its field of plastic.

De manière préférée, le dispositif de solidarisation 11 comporte en outre une collerette 13 montée sur l'axe 3 afin de servir de portée pour le spiral 7 au niveau de sa virole 2. En effet, cette configuration permet à la virole 2 d'être bloquée par rapport à la longueur de l'axe 3 par contact entre la collerette 13 formant portée et les moyens de solidarisation 6 formant tenon.Preferably, the securing device 11 further comprises a flange 13 mounted on the axis 3 to serve as a scope for the spiral 7 at its ferrule 2. In fact, this configuration allows the ferrule 2 to be blocked relative to the length of the axis 3 by contact between the collar 13 forming the bearing and the fastening means 6 forming tenon.

Les trois modes de réalisation du procédé de fabrication vont maintenant être expliqué. Selon une première étape a), le procédé commence par la fabrication de la pièce 7 avec un trou 8 destiné à recevoir l'axe 3 et un évidement 4 communiquant avec le trou 8 comme illustré à la figure 2.The three embodiments of the manufacturing process will now be explained. According to a first step a), the process begins with the manufacture of the part 7 with a hole 8 intended to receive the axis 3 and a recess 4 communicating with the hole 8 as illustrated in FIG. figure 2 .

Selon une deuxième étape b) qui peut être réalisée avant, pendant ou après l'étape a), le procédé se poursuit avec la fabrication l'axe 3 préférentiellement avec la portée 13. Dans une troisième étape c), le procédé continue avec l'assemblage de l'axe 3 dans le trou 8 du spiral 7, préférentiellement, jusqu'à butée contre la collerette 13 de l'axe 3.According to a second step b) which can be performed before, during or after step a), the process continues with the manufacture of the axis 3 preferably with the bearing surface 13. In a third step c), the process continues with the assembly of the axis 3 in the hole 8 of the spiral 7, preferably up to the stop against the flange 13 of the axis 3.

Le procédé comporte ensuite une quatrième étape d) destinée à remplir l'évidement 4 par les moyens de solidarisation 6 comme, par exemple, un matériau métallique afin qu'ils épouse la forme de l'évidement et une partie du diamètre extérieur de l'axe 3. Enfin, le procédé se termine avec une cinquième et dernière étape e) destinée à durcir le matériau métallique afin de solidariser le spiral 7 avec l'axe 3.The method then comprises a fourth step d) intended to fill the recess 4 by the securing means 6 such as, for example, a metallic material so that it matches the shape of the recess and a part of the outer diameter of the recess. axis 3. Finally, the process ends with a fifth and last step e) intended to harden the metal material to secure the spiral 7 with the axis 3.

Selon un premier mode de réalisation, l'étape d) est réalisée par une fusion localisée de l'axe 3, c'est-à-dire qu'une fusion partielle de l'axe 3 au niveau de la zone 12 est effectuée pour qu'une partie rendue liquide de l'axe 3 s'écoule dans l'évidement 4 comme illustré aux figures 4 et 5. Une telle fusion de l'étape d) est, de manière préférée, réalisée par un rayonnement haute énergie au moyen, par exemple, d'une source laser.According to a first embodiment, step d) is carried out by a localized fusion of the axis 3, that is to say that a partial melting of the axis 3 at the level of the zone 12 is performed to that a liquid rendered portion of the axis 3 flows into the recess 4 as illustrated in FIGS. Figures 4 and 5 . Such a melting of step d) is preferably carried out by high energy radiation by means of, for example, a laser source.

Selon un deuxième mode de réalisation, l'étape d) est réalisée par la fusion d'une brasure, c'est-à-dire qu'une fusion d'un matériau métallique entre la zone 12 et l'évidement 4 est effectuée pour qu'elle soit rendue liquide et s'écoule dans l'évidement 4 de manière similaire au premier mode de réalisation. Une telle fusion selon le deuxième mode de réalisation est, également de manière préférée, réalisée par un rayonnement haute énergie au moyen, par exemple, d'une source laser.According to a second embodiment, step d) is carried out by the melting of a solder, that is to say that a melting of a metallic material between the zone 12 and the recess 4 is carried out for it is made liquid and flows into the recess 4 similarly to the first embodiment. Such a fusion according to the second embodiment is also preferably carried out by high energy radiation by means of, for example, a laser source.

Selon un troisième mode de réalisation, l'étape d) est réalisée par emmanchement à chaud dudit matériau métallique sous forme amorphe, c'est-à-dire que le matériau métallique est chauffé entre sa température de transition vitreuse et celle de cristallisation puis pressé dans l'évidement 4 afin qu'il adopte l'empreinte dudit évidement 4.According to a third embodiment, step d) is carried out by hot pressing said metal material in amorphous form, that is to say that the metallic material is heated between its glass transition temperature and that of crystallization and then pressed in the recess 4 so that it adopts the imprint of said recess 4.

Ainsi, quel que soit le mode de réalisation utilisé, lors de la cinquième et dernière étape e), le refroidissement des moyens de solidarisation 6 permet de les attacher à l'axe 3 et de former ledit tenon qui permettra d'entraîner à rotation le spiral 7 via sa virole 2. Ainsi, avantageusement, même si la pièce c'est-à-dire le spiral 7 est en matériau ne possédant pas de domaine plastique utilisable, il est possible de la rendre solidaire d'un axe 3 sans avoir à la chasser ou à effectuer un collage.Thus, irrespective of the embodiment used, during the fifth and last step e), the cooling of the securing means 6 allows them to be attached to the axis 3 and to form said tenon which will make it possible to drive the spiral 7 via its ferrule 2. Thus, advantageously, even if the part that is to say the spiral 7 is made of material having no usable plastic field, it is possible to make it integral with an axis 3 without having to hunt or to do a collage.

Bien entendu, la présente invention ne se limite pas à l'exemple illustré mais est susceptible de diverses variantes et modifications qui apparaîtront à l'homme de l'art. En particulier, la pente 10 peut être remplacée par une paroi verticale et une paroi horizontale, c'est-à-dire que l'évidement 4 comporte un fond sensiblement parallèle à la surface supérieure que la virole 2. Dans les deux exemples, on comprend que l'évidement 4 est borgne, c'est-à-dire qu'il ne traverse pas de part en part la pièce destinée à être rendue solidaire.Of course, the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art. In particular, the slope 10 may be replaced by a vertical wall and a horizontal wall, that is to say that the recess 4 has a bottom substantially parallel to the upper surface that the ferrule 2. In both examples, understands that the recess 4 is blind, that is to say, it does not cross through the part to be made integral.

On comprend également que si la pièce dans l'exemple ci-dessus est un spiral 7 dont la virole 2 comporte le trou 8 et l'évidement 4, l'invention est parfaitement applicable à une pièce du type mobile dont le moyeu comporte le trou et l'évidement ou encore à une pièce du type ancre d'échappement dont la baguette comporte le trou et l'évidement. Comme expliqué ci-dessus, ces exemples concernent le domaine de l'horlogerie cependant, l'invention peut être appliquée à d'autres domaines.It is also understood that if the part in the example above is a spring 7 whose ferrule 2 has the hole 8 and the recess 4, the invention is perfectly applicable to a movable type part whose hub has the hole and the recess or to an exhaust anchor piece whose rod has the hole and the recess. As explained above, these examples relate to the field of watchmaking however, the invention can be applied to other fields.

Claims (19)

Système de fixation (9) d'une pièce (7) en matériau ne possédant pas de domaine plastique utilisable comportant un dispositif de solidarisation (11) sur un axe (3), ledit axe traversant un trou (8) de ladite pièce caractérisé en ce que le dispositif de solidarisation (11) comporte un évidement (4) communiquant avec le trou (8) de ladite pièce et des moyens de solidarisation (6) attachés à l'axe (3) et épousant au moins partiellement la forme de l'évidement (4) afin de rendre solidaire le mouvement de la pièce (7) avec celui de l'axe (3) sans chassage ni collage.Fastening system (9) of a workpiece (7) made of material having no usable plastic field, comprising a fastening device (11) on an axis (3), said axis passing through a hole (8) of said workpiece characterized by that the securing device (11) has a recess (4) communicating with the hole (8) of said part and securing means (6) attached to the axis (3) and at least partially conforming to the shape of the recess (4) to make the movement of the piece (7) integral with that of the axis (3) without driving or gluing. Système de fixation (9) selon la revendication précédente, caractérisé en ce que l'évidement (4) est borgne afin de former une mortaise.Fastening system (9) according to the preceding claim, characterized in that the recess (4) is blind to form a mortise. Système de fixation (9) selon la revendication précédente, caractérisé en ce que l'évidement (4) est rayonné.Fastening system (9) according to the preceding claim, characterized in that the recess (4) is radiated. Système de fixation (9) selon l'une des revendications précédentes, caractérisé en ce que les moyens de solidarisation (6) comportent un ajout de matière métallique.Fastening system (9) according to one of the preceding claims, characterized in that the securing means (6) comprise an addition of metallic material. Système de fixation (9) selon la revendication précédente, caractérisé en ce que l'ajout de matière métallique est obtenu par une fusion partielle dudit axe.Fastening system (9) according to the preceding claim, characterized in that the addition of metallic material is obtained by a partial melting of said axis. Système de fixation (9) selon la revendication 4, caractérisé en ce que l'ajout de matière métallique est obtenu par fusion d'une brasure.Fastening system (9) according to claim 4, characterized in that the addition of metallic material is obtained by melting a solder. Système de fixation (9) selon la revendication 4, caractérisé en ce que l'ajout de matière métallique est obtenu par emmanchement à chaud de ladite matière métallique sous forme amorphe.Fastening system (9) according to claim 4, characterized in that the addition of metallic material is obtained by hot fitting said metal material in amorphous form. Système de fixation (9) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de solidarisation (11) comporte de plus une collerette (13) montée sur l'axe (3) afin de servir de portée pour ladite pièce.Fastening system (9) according to one of the preceding claims, characterized in that the securing device (11) further comprises a flange (13) mounted on the axis (3) to serve as a scope for said part. Système de fixation (9) selon l'une des revendications précédentes, caractérisé en ce que le matériau ne possédant pas de domaine plastique utilisable est à base de silicium.Fastening system (9) according to one of the preceding claims, characterized in that the material having no usable plastic field is based on silicon. Pièce d'horlogerie caractérisée en ce qu'elle comporte un système de fixation (9) selon l'une des revendications précédentes.Timepiece characterized in that it comprises a fastening system (9) according to one of the preceding claims. Procédé de fixation d'une pièce (7) en matériau ne possédant pas de domaine plastique utilisable sur un axe (3) caractérisé en ce qu'il comporte les étapes suivantes : a) fabriquer la pièce (7) avec un trou (8) destiné à recevoir ledit axe et un évidement (4) communiquant avec le trou (8) ; b) fabriquer ledit axe ; c) assembler l'axe (3) dans le trou (8) de la pièce (7) ; d) remplir l'évidement (4) par un matériau métallique (6) afin qu'il épouse la forme de l'évidement (4) et une partie du diamètre extérieur dudit axe ; e) durcir le matériau métallique (6) afin de solidariser la pièce (7) avec l'axe (3) sans chassage ni collage. Method for fixing a workpiece (7) made of material that does not have a plastic domain that can be used on an axis (3), characterized in that it comprises the following steps: a) fabricating the workpiece (7) with a hole (8) for receiving said shaft and a recess (4) communicating with the hole (8); b) manufacture said axis; c) assemble the shaft (3) in the hole (8) of the part (7); d) filling the recess (4) with a metallic material (6) to conform to the shape of the recess (4) and a portion of the outer diameter of said axis; e) hardening the metal material (6) to secure the piece (7) with the axis (3) without driving or gluing. Procédé de fixation selon la revendication précédente, caractérisé en ce que l'étape d) est réalisée par une fusion localisée de l'axe (3).Fastening method according to the preceding claim, characterized in that step d) is performed by a localized fusion of the axis (3). Procédé de fixation selon la revendication 11, caractérisé en ce que l'étape d) est réalisée par une fusion d'une brasure.Fastening method according to claim 11, characterized in that step d) is performed by a fusion of a solder. Procédé de fixation selon la revendication 12 ou 13, caractérisé en ce que la fusion de l'étape d) est réalisée au moyen d'un rayonnement haute énergie.Fastening method according to claim 12 or 13, characterized in that the melting of step d) is carried out by means of high energy radiation. Procédé de fixation selon la revendication 11, caractérisé en ce que l'étape d) est réalisée par emmanchement à chaud dudit matériau métallique sous forme amorphe.Fastening method according to claim 11, characterized in that step d) is carried out by hot fitting said metal material in amorphous form. Procédé de fixation selon l'une des revendications 11 à 15, caractérisé en ce que l'évidement (4) est borgne afin de former une mortaise.Fastening method according to one of claims 11 to 15, characterized in that the recess (4) is blind to form a mortise. Procédé de fixation selon la revendication précédente, caractérisé en ce que l'évidement (4) est rayonné.Fastening method according to the preceding claim, characterized in that the recess (4) is radiated. Procédé de fixation selon l'une des revendications 11 à 17, caractérisé en ce que le matériau ne possédant pas de domaine plastique utilisable est à base de silicium.Fastening method according to one of claims 11 to 17, characterized in that the material having no usable plastic field is based on silicon. Procédé de fixation selon l'une des revendications 11 à 18, caractérisé en ce que l'étape c) continue jusqu'à ce que la pièce bute contre une collerette (13) de l'axe (3) formée lors de l'étape b).Fastening method according to one of claims 11 to 18, characterized in that step c) continues until the piece abuts against a flange (13) of the axis (3) formed during the step b).
EP10186608.5A 2009-10-29 2010-10-05 Fixation without force-fitting or bonding of a hard part on an axe Active EP2317406B1 (en)

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RU2550305C2 (en) 2015-05-10
EP2317407A1 (en) 2011-05-04
TWI493299B (en) 2015-07-21
JP5261459B2 (en) 2013-08-14
JP2011094793A (en) 2011-05-12
CN102053558A (en) 2011-05-11
EP2317406B1 (en) 2013-05-08
CN102053558B (en) 2017-05-31
TW201140259A (en) 2011-11-16
US20110103200A1 (en) 2011-05-05
US8636405B2 (en) 2014-01-28
RU2010144241A (en) 2012-05-10

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