EP2133756B1 - Ressort de barillet - Google Patents

Ressort de barillet Download PDF

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Publication number
EP2133756B1
EP2133756B1 EP09405089.5A EP09405089A EP2133756B1 EP 2133756 B1 EP2133756 B1 EP 2133756B1 EP 09405089 A EP09405089 A EP 09405089A EP 2133756 B1 EP2133756 B1 EP 2133756B1
Authority
EP
European Patent Office
Prior art keywords
spring
radius
nth turn
max
ribbon
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.)
Revoked
Application number
EP09405089.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2133756A2 (fr
EP2133756A3 (fr
Inventor
Dominique Gritti
Thomas Gyger
Vincent von Niederhäusern
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.)
Rolex SA
Original Assignee
Rolex SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41110579&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2133756(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from EP08405192A external-priority patent/EP2154581A1/fr
Application filed by Rolex SA filed Critical Rolex SA
Priority to EP09405089.5A priority Critical patent/EP2133756B1/fr
Publication of EP2133756A2 publication Critical patent/EP2133756A2/fr
Publication of EP2133756A3 publication Critical patent/EP2133756A3/fr
Application granted granted Critical
Publication of EP2133756B1 publication Critical patent/EP2133756B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor
    • G04B1/145—Composition and manufacture of the springs

Definitions

  • the present invention relates to a barrel spring for a mechanism driven by a motor spring, particularly for a timepiece, formed of a metal glass material.
  • the mechanical properties of the alloy and the final shape are the result of the combination of these two steps. A single heat treatment would not achieve the desired mechanical properties for traditional alloys.
  • the fixing of crystalline metal alloys involves a relatively long treatment time (several hours) at a temperature high enough to induce the desired modification of the crystalline structure.
  • the mechanical properties of the material are intrinsically linked to its amorphous structure and are obtained immediately after solidification, unlike the mechanical properties of the traditional Nivaflex ® alloy springs, which are obtained by a series of heat treatments at different stages. of their manufacturing process. Therefore, and unlike the Nivaflex ® alloy, subsequent curing by heat treatment is not necessary.
  • the object of the present invention is to overcome, at least in part, the aforementioned drawbacks.
  • the present invention relates to a cylinder spring for a mechanism driven by a mainspring according to claim 1.
  • the ribbons intended to form the barrel springs are made by the technique of quenching on a wheel (or Planar Flow Casting) which is a technique for producing metal ribbons by rapid cooling.
  • a jet of molten metal is propelled on a cold wheel that rotates at high speed.
  • the speed of the wheel, the width of the injection slot, the injection pressure are all parameters that will define the width and thickness of the ribbon produced.
  • Other techniques for producing ribbons can also be used, such as Twin Roll Casting.
  • the alloy used is Ni 53 Nb 20 Zr 8 Ti 10 Co 6 Cu 3 in this example. From 10 to 20 g of alloy are placed in a dispensing nozzle heated between 1050 and 1150 ° C. The slit width of the nozzle is between 0.2 and 0.8mm. The distance between the nozzle and the wheel is between 0.1 and 0.3mm. The wheel on which the molten alloy is deposited is a copper alloy wheel and driven at a speed of 5 to 20m / s. The pressure exerted to bring the molten alloy out through the nozzle is between 10 and 50kPa.
  • the barrel spring releases its energy as it moves from the armed state to the disarmed state.
  • the goal is to calculate the shape that the spring must have in its free state so that each section is subjected to the maximum bending moment in its armed state.
  • the Figures 1 to 3 below describe respectively the three configurations of the barrel spring namely armed, disarmed and free.
  • the spring in its armed state (see figure 1 ) is considered an Archimedean spiral with the turns tight against each other.
  • the metallic glass ribbon is obtained by rapid solidification of the liquid metal on a copper wheel or alloy with high thermal conductivity rotating at high speed.
  • a minimum critical cooling rate is required to vitrify the liquid metal. If the cooling is too slow, the metal solidifies by crystallization and loses its mechanical properties. It is important for a given thickness to guarantee the maximum cooling rate. The higher it is, the less the atoms will have time to relax and the higher the concentration of free volume will be important. The ductility of the ribbon is then improved.
  • the plastic deformation of the metal glasses below about 0.7 x the glass transition temperature T g [K], is heterogeneous through the initiation and then the propagation of slip bands. Free volumes act as germination sites for slip bands and the higher their number, the less the deformation is localized and the greater the deformation before rupture is important.
  • Planar Flow Casting stage is therefore crucial for the mechanical and thermodynamic properties of the ribbon.
  • the viscosity decreases sharply with temperature, about an order of magnitude by 10K elevation.
  • the viscosity at T g is generally equal to 10 12 Pa ⁇ s, independently of the alloy considered. It is then possible to model the viscous body, in this case the ribbon, to give it its desired shape, then cool it to freeze the shape permanently.
  • thermal activation will allow the diffusion of free volumes and atoms within the material.
  • the atoms will locally form denser domains, close to a crystalline structure at the expense of free volumes, which will be annihilated. This phenomenon is called relaxation.
  • the decrease in free volume is accompanied by an increase in Young's modulus and a decrease in the subsequent ductility.
  • the relaxation phenomenon can be likened to annealing.
  • thermal agitation the diffusion of atoms is facilitated: the relaxation is accelerated and causes a drastic embrittlement of the glass by annihilation of the free volume. If the treatment time is too long, the amorphous material will crystallize and thus lose its exceptional properties.
  • Hot forming is therefore a balance between sufficient relaxation to retain the desired shape and as little ductility as possible.
  • the ribbons produced by the Planar Flow Casting (PFC) technique have a width of several millimeters and a thickness greater than 50 ⁇ m, typically between> 50 and 150 ⁇ m.
  • ribbons with the width and length typical of a mainspring are machined by wire electroerosion technique. A sidewall grinding was performed, after which the spring was shaped from the theoretical form as previously calculated.
  • the ribbon produced has the desired width.
  • the spring in its setting was then introduced into a heated oven around T g (590 ° C) for a period of 3 to 5 minutes, depending on the setting used.
  • heating modes such as Joule heating or a hot inert gas jet, for example.
  • the figure 4 shows the torque variation as a function of the number of revolutions obtained with the spring calculated and shaped according to the method described in this document.
  • This armor-disarming curve is quite characteristic of the behavior of a mainspring.
  • the torque, the number of turns of development and the overall yield are fully satisfactory given the dimensions of the ribbon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Electromechanical Clocks (AREA)
EP09405089.5A 2008-06-10 2009-05-27 Ressort de barillet Revoked EP2133756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09405089.5A EP2133756B1 (fr) 2008-06-10 2009-05-27 Ressort de barillet

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08405153 2008-06-10
EP08405192A EP2154581A1 (fr) 2008-08-04 2008-08-04 Ressort de barillet et procede pour sa mise en forme
EP09405089.5A EP2133756B1 (fr) 2008-06-10 2009-05-27 Ressort de barillet

Publications (3)

Publication Number Publication Date
EP2133756A2 EP2133756A2 (fr) 2009-12-16
EP2133756A3 EP2133756A3 (fr) 2011-04-13
EP2133756B1 true EP2133756B1 (fr) 2016-07-20

Family

ID=41110579

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09405089.5A Revoked EP2133756B1 (fr) 2008-06-10 2009-05-27 Ressort de barillet
EP22170104.8A Withdrawn EP4092489A1 (fr) 2008-06-10 2009-06-09 Procédé pour la mise en forme d'un ressort de barillet en verre metallique
EP09771888.6A Active EP2286308B1 (fr) 2008-06-10 2009-06-09 Procédé pour la mise en forme d'un ressort de barillet en verre metallique

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP22170104.8A Withdrawn EP4092489A1 (fr) 2008-06-10 2009-06-09 Procédé pour la mise en forme d'un ressort de barillet en verre metallique
EP09771888.6A Active EP2286308B1 (fr) 2008-06-10 2009-06-09 Procédé pour la mise en forme d'un ressort de barillet en verre metallique

Country Status (6)

Country Link
US (2) US8348496B2 (zh)
EP (3) EP2133756B1 (zh)
JP (2) JP5656369B2 (zh)
CN (2) CN101604141B (zh)
CH (1) CH698962B1 (zh)
WO (1) WO2010000081A1 (zh)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH698962B1 (fr) * 2008-06-10 2014-10-31 Rolex Sa Ressort de barillet et procédé pour sa mise en forme.
EP2510405B1 (fr) * 2009-12-09 2016-03-30 Rolex S.A. Procede de fabrication d'un ressort pour piece d'horlogerie
US20110156328A1 (en) * 2009-12-31 2011-06-30 Nicolio Curtis J Integral retainer to retain a spring
GB201001897D0 (en) * 2010-02-05 2010-03-24 Levingston Gideon Non magnetic mateial additives and processes for controling the thermoelastic modulus and spring stiffness within springs for precision instruments
EP2390732A1 (fr) 2010-05-27 2011-11-30 Association Suisse pour la Recherche Horlogère Ressort de barillet
CN103124935B (zh) * 2010-06-22 2015-05-13 斯沃奇集团研究和开发有限公司 钟表抗震系统
CN102339008A (zh) * 2010-07-15 2012-02-01 慈溪市九菱电器有限公司 一种定时器s形发条
EP2596141B1 (fr) 2010-07-21 2014-11-12 Rolex Sa Alliage métallique amorphe
JP6346441B2 (ja) 2010-07-21 2018-06-20 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ アモルファス金属合金を含む時計部品
US9298162B2 (en) * 2010-10-01 2016-03-29 Rolex Sa Timepiece barrel with thin disks
CH704236B1 (fr) 2010-12-17 2015-09-30 Manuf Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle Sa Procédé de réalisation d'un timbre de sonnerie.
DE102011001783B4 (de) 2011-04-04 2022-11-24 Vacuumschmelze Gmbh & Co. Kg Feder für ein mechanisches Uhrwerk, mechanisches Uhrwerk, Uhr mit einem mechanischen Uhrwerk und Verfahren zur Herstellung einer Feder
DE102011001784B4 (de) 2011-04-04 2018-03-22 Vacuumschmelze Gmbh & Co. Kg Verfahren zur Herstellung einer Feder für ein mechanisches Uhrwerk und Feder für ein mechanisches Uhrwerk
EP2590325A1 (fr) * 2011-11-04 2013-05-08 The Swatch Group Research and Development Ltd. Résonateur thermocompensé en céramique
JP6109921B2 (ja) * 2012-03-16 2017-04-05 イェール ユニバーシティーＹａｌｅ Ｕｎｉｖｅｒｓｉｔｙ 金属ガラスから作られる複雑な物品の製造のための多段階加工方法
US9448533B2 (en) 2012-04-04 2016-09-20 Rolex Sa Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
EP2703911B1 (fr) 2012-09-03 2018-04-11 Blancpain SA. Organe régulateur de montre
EP2706415A3 (en) * 2012-09-05 2017-06-14 Seiko Epson Corporation Method for producing timepiece spring, device for producing timepiece spring, timepiece spring, and timepiece
CH708231B1 (fr) * 2013-06-27 2017-03-15 Nivarox Far Sa Ressort d'horlogerie en acier inoxydable austénitique.
CH708660A1 (fr) * 2013-10-04 2015-04-15 Cartier Création Studio Sa Ressort moteur pour barillet moteur minimisant l'usure du tambour.
EP2924514B1 (fr) 2014-03-24 2017-09-13 Nivarox-FAR S.A. Ressort d'horlogerie en acier inoxydable austénitique
US10315241B2 (en) 2014-07-01 2019-06-11 United Technologies Corporation Cast components and manufacture and use methods
DE102015002430A1 (de) 2015-02-26 2016-09-01 Gernot Hausch CoNiCrMo-Legierung für Aufzugsfedern in einem mechanischen Uhrwerk
US10317842B2 (en) 2016-04-25 2019-06-11 Seiko Epson Corporation Timepiece mainspring, timepiece drive device, timepiece movement, timepiece, and manufacturing method of timepiece mainspring
EP3273305B1 (fr) * 2016-07-19 2023-07-19 Nivarox-FAR S.A. Pièce pour mouvement d'horlogerie
EP3557333B1 (fr) 2018-04-16 2020-11-04 Patek Philippe SA Genève Procédé de fabrication d'un ressort moteur d'horlogerie
EP3575885B1 (fr) * 2018-06-01 2022-09-21 Nivarox-FAR S.A. Barillet d'horlogerie
EP3882710A1 (fr) 2020-03-19 2021-09-22 Patek Philippe SA Genève Procédé de fabrication d'un composant horloger à base de silicium

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US20070133355A1 (en) 2003-11-07 2007-06-14 Seik Epson Corporation Timepiece and spring thereof
EP2154581A1 (fr) 2008-08-04 2010-02-17 Rolex Sa Ressort de barillet et procede pour sa mise en forme
WO2012010941A1 (fr) 2010-07-21 2012-01-26 Rolex S.A. Composant horloger comprenant un alliage métallique amorphe

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Also Published As

Publication number Publication date
CH698962B1 (fr) 2014-10-31
EP2133756A2 (fr) 2009-12-16
US20090303842A1 (en) 2009-12-10
US8348496B2 (en) 2013-01-08
WO2010000081A1 (fr) 2010-01-07
EP2286308A1 (fr) 2011-02-23
CN101604141A (zh) 2009-12-16
EP4092489A1 (fr) 2022-11-23
US8720246B2 (en) 2014-05-13
CH698962A2 (fr) 2009-12-15
JP5656369B2 (ja) 2015-01-21
CN101604141B (zh) 2012-06-27
CN102057336A (zh) 2011-05-11
US20110072873A1 (en) 2011-03-31
JP2011523066A (ja) 2011-08-04
EP2286308B1 (fr) 2022-05-04
JP5518852B2 (ja) 2014-06-11
CN102057336B (zh) 2013-07-03
EP2133756A3 (fr) 2011-04-13
JP2009300439A (ja) 2009-12-24

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