EP4092489A1 - Verfahren zum umformen einer triebfeder aus metallischen glas - Google Patents
Verfahren zum umformen einer triebfeder aus metallischen glas Download PDFInfo
- Publication number
- EP4092489A1 EP4092489A1 EP22170104.8A EP22170104A EP4092489A1 EP 4092489 A1 EP4092489 A1 EP 4092489A1 EP 22170104 A EP22170104 A EP 22170104A EP 4092489 A1 EP4092489 A1 EP 4092489A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ribbon
- spring
- curvatures
- heating
- shaped
- 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.)
- Withdrawn
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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 method for shaping a barrel spring for a mechanism driven by a mainspring, in particular for a timepiece, formed from a metallic 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 mechanical properties desired 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.
- Nivaflex ® which are obtained by a series of heat treatments at different stages of their manufacturing process. Therefore, and contrary to the Nivaflex ® alloy, subsequent hardening by heat treatment is not necessary.
- the object of the present invention is to remedy, at least in part, the aforementioned drawbacks.
- the subject of the present invention is a method for shaping the barrel spring according to claim 1.
- the strips intended to form the barrel springs are produced by the wheel quenching technique (or Planar Flow Casting) which is a technique for producing metal strips by rapid cooling.
- a jet of molten metal is propelled onto a cold wheel which spins at high speed.
- the speed of the wheel, the width of the injection slot, the injection pressure are all parameters which will define the width and the thickness of the tape produced.
- Other ribbon-making techniques may also be used, such as the 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 20g of alloy are placed in a distribution 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 force the molten alloy out through the nozzle is between 10 and 50 kPa.
- the barrel spring releases its energy when it passes 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 respectively describe the three mainspring configurations, namely armed, disarmed and free.
- the spring in its charged state (see figure 1 ) is considered to be a spiral with the turns tight against each other.
- the metallic glass ribbon is obtained by rapid solidification of the liquid metal on a copper or alloy wheel with high thermal conductivity rotating at high speed.
- a minimum critical cooling rate is required to vitrify 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 this will be, the less the atoms will have time to relax and the greater the concentration of free volume will be. The ductility of the ribbon is then improved.
- the Planar Flow Casting step is therefore decisive for the mechanical and thermodynamic properties of the tape.
- the viscosity decreases sharply with temperature, i.e. approximately one order of magnitude per 10K rise.
- the viscosity at Tg 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 permanently fix the shape.
- 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 the 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 subsequent ductility.
- the relaxation phenomenon may resemble annealing.
- the thermal agitation 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 reduction in ductility as possible.
- the ribbons produced by the Planar Flow Casting (PFC) technique have a width of several millimeters and a thickness of between 40 and 150 ⁇ m. Strips have been machined, using the wire EDM technique, to the typical width and length of a mainspring. The flanks were ground, after which the spring was shaped, based on the theoretical shape as calculated previously.
- PFC Planar Flow Casting
- a laying of the type generally used is used, on which the spring is wound to give it its free shape, determined by the theoretical shape as calculated above, taking into account a variation between the shape imposed by the laying and the free shape actually obtained.
- the curvatures being defined as the inverse of the radius of curvature
- the laying curvatures must therefore be increased accordingly so that the free shape obtained corresponds to the theoretical shape.
- the ratio between the curvatures of the shaped ribbon before the relaxation heating and the curvatures of the theoretical free form depends on the heating parameters, the alloy and its state of initial relaxation, and is between 100% and 140%, typically 130% under the conditions used below.
- the spring in its setting was then introduced into an oven heated to around Tg (590° C.) for a period of 3 to 5 minutes, depending on the setting used.
- heating modes can be used, such as heating by Joule effect or a jet of hot inert gas for example.
- a sliding flange for a self-winding watch spring in Nivaflex ® alloy was riveted to its outer end, to enable winding and unwinding tests to be carried out.
- the sliding flange is necessary to ensure the function of such a spring, however its method of assembly to the blade as well as the material of the flange may vary.
- the figure 4 shows the variation in torque as a function of the number of turns obtained with the spring calculated and shaped according to the method described in this document.
- This winding-unwinding curve is entirely characteristic of the behavior of a mainspring.
- the torque, the number of turns of development and the overall efficiency 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)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08405153 | 2008-06-10 | ||
EP08405192A EP2154581A1 (de) | 2008-08-04 | 2008-08-04 | Schließzylinderfeder und Verfahren zur ihrer Formgebung |
PCT/CH2009/000191 WO2010000081A1 (fr) | 2008-06-10 | 2009-06-09 | Procede pour la mise en forme d'un ressort de barillet en verre metallique |
EP09771888.6A EP2286308B1 (de) | 2008-06-10 | 2009-06-09 | Feder von amorphem metall für federhaus und verfahren zur ihrer formgebung |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09771888.6A Division EP2286308B1 (de) | 2008-06-10 | 2009-06-09 | Feder von amorphem metall für federhaus und verfahren zur ihrer formgebung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4092489A1 true EP4092489A1 (de) | 2022-11-23 |
Family
ID=41110579
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09405089.5A Revoked EP2133756B1 (de) | 2008-06-10 | 2009-05-27 | Zugfeder für Federhaus |
EP22170104.8A Withdrawn EP4092489A1 (de) | 2008-06-10 | 2009-06-09 | Verfahren zum umformen einer triebfeder aus metallischen glas |
EP09771888.6A Active EP2286308B1 (de) | 2008-06-10 | 2009-06-09 | Feder von amorphem metall für federhaus und verfahren zur ihrer formgebung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09405089.5A Revoked EP2133756B1 (de) | 2008-06-10 | 2009-05-27 | Zugfeder für Federhaus |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09771888.6A Active EP2286308B1 (de) | 2008-06-10 | 2009-06-09 | Feder von amorphem metall für federhaus und verfahren zur ihrer formgebung |
Country Status (6)
Country | Link |
---|---|
US (2) | US8348496B2 (de) |
EP (3) | EP2133756B1 (de) |
JP (2) | JP5656369B2 (de) |
CN (2) | CN101604141B (de) |
CH (1) | CH698962B1 (de) |
WO (1) | WO2010000081A1 (de) |
Families Citing this family (28)
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. |
CN102713770B (zh) * | 2009-12-09 | 2015-11-25 | 劳力士有限公司 | 用于制造钟表用弹簧的方法 |
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 (de) | 2010-05-27 | 2011-11-30 | Association Suisse pour la Recherche Horlogère | Zugfeder für Federhaus |
EP2585882B1 (de) * | 2010-06-22 | 2021-02-24 | The Swatch Group Research and Development Ltd. | Stossdämpfungssystem für eine uhr |
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 |
WO2012010941A1 (fr) | 2010-07-21 | 2012-01-26 | Rolex S.A. | Composant horloger comprenant un alliage métallique amorphe |
JP6346440B2 (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 |
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 (de) * | 2011-11-04 | 2013-05-08 | The Swatch Group Research and Development Ltd. | Thermokompensierter Resonator aus Keramik |
SG10201607483TA (en) * | 2012-03-16 | 2016-10-28 | Univ Yale | Multi step processing method for the fabrication of complex articles made of metallic glasses |
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 (de) * | 2012-09-03 | 2018-04-11 | Blancpain SA. | Regulierorgan für kleinuhr |
EP2706415A3 (de) * | 2012-09-05 | 2017-06-14 | Seiko Epson Corporation | Verfahren zur Herstellung einer Uhrfeder, Vorrichtung zur Herstellung einer Uhrfeder, Uhrfeder und Uhr |
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 (de) | 2014-03-24 | 2017-09-13 | Nivarox-FAR S.A. | Uhrfeder aus austenitischem Edelstahl |
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 (de) * | 2016-07-19 | 2023-07-19 | Nivarox-FAR S.A. | Bauteil für uhrwerk |
EP3557333B1 (de) | 2018-04-16 | 2020-11-04 | Patek Philippe SA Genève | Herstellungsverfahren einer zugfeder für eine uhr |
EP3575885B1 (de) * | 2018-06-01 | 2022-09-21 | Nivarox-FAR S.A. | Federhaus für uhren |
EP3882710A1 (de) | 2020-03-19 | 2021-09-22 | Patek Philippe SA Genève | Verfahren zur herstellung einer uhrenkomponente auf siliziumbasis |
Citations (4)
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US3187416A (en) * | 1961-02-14 | 1965-06-08 | Tuetey Paul | Method for manufacturing spiral springs, particularly for watchmaking |
DE3136303A1 (de) * | 1981-09-12 | 1983-04-14 | Vacuumschmelze Gmbh, 6450 Hanau | Vorrichtung fuer die herstellung von metallband aus einer schmelze |
EP0942337A1 (de) | 1997-08-28 | 1999-09-15 | Seiko Epson Corporation | Feder, zugfeder, spiralfeder, diese verwendenden antriebsmechanismus und uhr |
US20070133355A1 (en) * | 2003-11-07 | 2007-06-14 | Seik Epson Corporation | Timepiece and spring thereof |
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US3343573A (en) * | 1965-04-14 | 1967-09-26 | James Hill Mfg Company | Roving can spring |
GB1162296A (en) * | 1966-04-30 | 1969-08-20 | Citizen Watch Co Ltd | Improvements in and relating to Barrel Springs for Timepieces |
FR1533876A (fr) | 1967-08-09 | 1968-07-19 | Dispositif pour la fabrication des spiraux d'horlogerie et procédé pour la mise enaction de ce dispositif | |
CH506109A (fr) * | 1968-02-08 | 1970-12-15 | Fabriques De Spiraux Reunies S | Procédé de fabrication et de fixation d'un spiral, dispositif de mise en oeuvre et spiral obtenu par l'application de ce procédé |
US4288901A (en) * | 1977-04-22 | 1981-09-15 | Babcock Clarence O | Method of manufacturing and calibrating a displacement measuring sensor |
DE3442009A1 (de) * | 1983-11-18 | 1985-06-05 | Nippon Steel Corp., Tokio/Tokyo | Amorphes legiertes band mit grosser dicke und verfahren zu dessen herstellung |
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CH698962B1 (fr) * | 2008-06-10 | 2014-10-31 | Rolex Sa | Ressort de barillet et procédé pour sa mise en forme. |
EP2154581A1 (de) | 2008-08-04 | 2010-02-17 | Rolex Sa | Schließzylinderfeder und Verfahren zur ihrer Formgebung |
CN102713770B (zh) * | 2009-12-09 | 2015-11-25 | 劳力士有限公司 | 用于制造钟表用弹簧的方法 |
WO2012010941A1 (fr) | 2010-07-21 | 2012-01-26 | Rolex S.A. | Composant horloger comprenant un alliage métallique amorphe |
-
2009
- 2009-05-26 CH CH00809/09A patent/CH698962B1/fr unknown
- 2009-05-27 EP EP09405089.5A patent/EP2133756B1/de not_active Revoked
- 2009-06-08 US US12/479,947 patent/US8348496B2/en active Active
- 2009-06-08 JP JP2009136880A patent/JP5656369B2/ja active Active
- 2009-06-09 EP EP22170104.8A patent/EP4092489A1/de not_active Withdrawn
- 2009-06-09 US US12/996,542 patent/US8720246B2/en active Active
- 2009-06-09 CN CN2009101595422A patent/CN101604141B/zh active Active
- 2009-06-09 CN CN2009801217412A patent/CN102057336B/zh active Active
- 2009-06-09 JP JP2011512804A patent/JP5518852B2/ja active Active
- 2009-06-09 WO PCT/CH2009/000191 patent/WO2010000081A1/fr active Application Filing
- 2009-06-09 EP EP09771888.6A patent/EP2286308B1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3187416A (en) * | 1961-02-14 | 1965-06-08 | Tuetey Paul | Method for manufacturing spiral springs, particularly for watchmaking |
DE3136303A1 (de) * | 1981-09-12 | 1983-04-14 | Vacuumschmelze Gmbh, 6450 Hanau | Vorrichtung fuer die herstellung von metallband aus einer schmelze |
EP0942337A1 (de) | 1997-08-28 | 1999-09-15 | Seiko Epson Corporation | Feder, zugfeder, spiralfeder, diese verwendenden antriebsmechanismus und uhr |
US20070133355A1 (en) * | 2003-11-07 | 2007-06-14 | Seik Epson Corporation | Timepiece and spring thereof |
Also Published As
Publication number | Publication date |
---|---|
EP2286308A1 (de) | 2011-02-23 |
CN101604141B (zh) | 2012-06-27 |
WO2010000081A1 (fr) | 2010-01-07 |
CH698962A2 (fr) | 2009-12-15 |
US20110072873A1 (en) | 2011-03-31 |
US8720246B2 (en) | 2014-05-13 |
CH698962B1 (fr) | 2014-10-31 |
US8348496B2 (en) | 2013-01-08 |
JP2011523066A (ja) | 2011-08-04 |
US20090303842A1 (en) | 2009-12-10 |
EP2133756A2 (de) | 2009-12-16 |
CN101604141A (zh) | 2009-12-16 |
CN102057336A (zh) | 2011-05-11 |
JP5518852B2 (ja) | 2014-06-11 |
JP5656369B2 (ja) | 2015-01-21 |
EP2286308B1 (de) | 2022-05-04 |
EP2133756A3 (de) | 2011-04-13 |
EP2133756B1 (de) | 2016-07-20 |
JP2009300439A (ja) | 2009-12-24 |
CN102057336B (zh) | 2013-07-03 |
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