EP3502787B1 - Herstellungsverfahren einer unruh für uhren - Google Patents

Herstellungsverfahren einer unruh für uhren Download PDF

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Publication number
EP3502787B1
EP3502787B1 EP17210299.8A EP17210299A EP3502787B1 EP 3502787 B1 EP3502787 B1 EP 3502787B1 EP 17210299 A EP17210299 A EP 17210299A EP 3502787 B1 EP3502787 B1 EP 3502787B1
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EP
European Patent Office
Prior art keywords
metal alloy
balance
ppm
felloe
process according
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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Application number
EP17210299.8A
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English (en)
French (fr)
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EP3502787A1 (de
Inventor
Alexandre Haemmerli
François Gueissaz
Jean-Claude Martin
Lionel Paratte
Yves Winkler
Gianni Di Domenico
Pascal Winkler
Jean-Luc Helfer
Lionel TOMBEZ
Baptiste Hinaux
Donald William Corson
Michel Willemin
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Swatch Group Research and Development SA
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Swatch Group Research and Development 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
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP17210299.8A priority Critical patent/EP3502787B1/de
Priority to EP20201790.1A priority patent/EP3796102B1/de
Priority to US16/150,524 priority patent/US11307535B2/en
Priority to JP2018216249A priority patent/JP6770049B2/ja
Priority to CN201811455309.4A priority patent/CN109960137B/zh
Priority to CN202110265760.5A priority patent/CN112965355A/zh
Publication of EP3502787A1 publication Critical patent/EP3502787A1/de
Application granted granted Critical
Publication of EP3502787B1 publication Critical patent/EP3502787B1/de
Priority to US17/669,476 priority patent/US11640140B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring
    • 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/222—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with balances
    • 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used
    • 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
    • G04B18/00—Mechanisms for setting frequency
    • G04B18/006—Mechanisms for setting frequency by adjusting the devices fixed on the balance
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0038—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for balances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • B22D25/026—Casting jewelry articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C16/00—Alloys based on zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance

Definitions

  • the invention relates to a method of manufacturing a balance for a timepiece comprising a rim, a hub and at least one arm connecting the hub to said rim.
  • the oscillator or resonator of a mechanical watch is made up of a spiral spring and a flywheel called a balance.
  • the thermal variations cause the stiffness of the hairspring to vary, as well as the geometries of the hairspring and the balance, which modifies the spring constant and inertia, and therefore the frequency of oscillation.
  • Watchmakers have worked hard to have temperature-stable oscillators and several avenues have been explored / exploited, one of which won a Nobel Prize to Charles-Edouardclair for the development of the Elinvar alloy whose modulus of elasticity increases with temperature and compensates for the increase in inertia of the balance.
  • the monocrystalline quartz hairspring enables thermal compensation for the change in inertia of the balance.
  • quartz is limited to materials having a thermal expansion coefficient of the order of 10 ppm / ° C, which corresponds for example titanium and platinum.
  • the main problem with these materials is the machinability and control of fine structure and / or a perfect finish (mirror polished by example).
  • titanium its relatively low density limits its use for large pendulums and in the case of platinum, its high price limits its use to prestige and luxury products.
  • the object of the present invention is to remedy these drawbacks by proposing a method for manufacturing a balance made of new materials allowing simpler and more precise manufacture, so as to reduce, for example, the dispersion of inertia and / or of unbalance within the same production batch.
  • the invention relates to a method according to claim 1.
  • a metal alloy balance wheel can be made using a simplified manufacturing process such as a casting process or a hot forming process.
  • the metal alloy in its at least partially amorphous form has the property of having a much larger elastic range than its crystalline equivalent, thanks to the absence of dislocation. This property makes it possible to overmold or integrate into the balance elements making it possible to improve the centering as well as to adjust the inertia and / or the unbalance.
  • a balance 1 for a timepiece conventionally comprises a rim 2, continuous or not, defining the outer diameter of the balance 1, a hub 4, forming its central part and provided with a hole 6 intended to receive a shaft (not shown) defining the pivot axis of the balance 1.
  • the hub 4 is integrally connected to the rim 2 by arms 8.
  • the arms 8 are here four in number and are arranged at 90 °. We also usually find balances with two or three arms, arranged respectively at 180 ° or 120 °.
  • the rim 2, the hub 4 and the arms 8 are made from the same metal alloy.
  • the balance 1 is in one piece, that is to say produced in one piece.
  • the balance 1 can for example be made entirely from an alloy based on platinum or palladium which will be described in detail below. Since platinum in particular has a high density (21,000 kg / m 3 ), the platinum alloy used in the invention also has a high density (15.5 g / cm 3 ), so that the addition of elements in dense material to increase the inertia of the balance will not necessarily be necessary.
  • the cooling step d) can be carried out at a cooling rate chosen to obtain a crystalline alloy, partially amorphous or completely amorphous.
  • the balance wheel 1 can also be produced entirely, for example, from an alloy based on titanium or on zirconium which will be described in detail below.
  • Zirconium for example having a lower density
  • the zirconium alloy used in the invention also has a lower density (6.5 g / cm 3 ), so that the addition of elements in denser material to increase the inertia of the balance is recommended, especially if you want to make a small balance for small movements. These elements make it possible to increase the inertia of the balance while keeping an aesthetic serge geometry and with good aerodynamic properties.
  • the rim 2 can comprise first elements for adjusting the inertia 10 overmolded, said first elements for adjusting the inertia 10 being made of a material having a density greater than the density of the metal alloy.
  • These first elements for adjusting the inertia 10 may for example be made of tungsten or tungsten carbide, and are obtained by overmolding.
  • the method according to the invention comprises a step of overmolding said first inertia adjustment elements 10 in the rim 2, by means of inserts placed in the mold before the introduction of the metal alloy, and overmolded, said first inertia adjusting elements 10 being made of a first material having a density greater than the density of said metal alloy.
  • the arms and the hub of the balance are made of a metal alloy, the rim being made of a material having a density greater than the density of said metal alloy used for the arms and the hub.
  • This material can itself be the metal alloy based on platinum or palladium as defined below or another material.
  • the arms and the hub of the balance wheel are made in the amorphous metal alloy based on zirconium as defined below to allow the balance to be paired with a hairspring, preferably in monocrystalline quartz, and the rim is made in another material having a density greater than the density of the alloy zirconium-based metal used for the arms and the hub to improve the inertia of the balance.
  • the cooling step d) can be carried out at a cooling rate chosen to obtain a crystalline, partially amorphous or completely amorphous alloy.
  • the methods of the invention according to the first or second embodiments advantageously use the properties of a metal alloy capable of being in an at least partially amorphous form when heated to easily shape it in order to achieve a metal alloy balance.
  • a metal alloy capable of being in an at least partially amorphous form when it is heated allows great ease in shaping allowing the manufacture of parts with complicated shapes with greater precision.
  • One method advantageously used is the hot forming of an amorphous preform.
  • This preform is obtained by melting in a furnace the metallic elements intended to constitute the metallic alloy. This fusion is carried out in a controlled atmosphere with the aim of obtaining a contamination of the alloy with oxygen as low as possible. Once these elements are melted, they are cast in the form of a semi-finished product, then cooled rapidly in order to maintain the partially or totally amorphous state.
  • the hot forming is carried out in order to obtain a final part. This hot forming is carried out by pressing in a temperature range between the glass transition temperature Tg and the crystallization temperature Tx of the metal alloy for a determined time to maintain an at least partially amorphous structure. This is done with the aim of retaining the elastic properties characteristic of amorphous metals.
  • the balance can also be produced by casting or by injection.
  • This process consists in casting or injecting the metal alloy heated to a temperature between its transition temperature vitreous and its crystallization temperature to be at least partially amorphous in a mold having the shape of the final part.
  • the mold can be reused or dissolved to release the parts.
  • the molding process has the advantage of perfectly replicating the geometry of the balance, including any decorations or surface structuring. This results in less dispersion of inertia and better centering on a production batch of balances.
  • the molding process makes it possible to obtain a balance with an aesthetic geometry, with sharp interior angles, a serge profile and / or curved arm, and a perfect finish. It is also possible to provide a non-continuous serge.
  • the mold will be made in silicon by a DRIE process. It is obvious that the mold can also be produced by machining by milling, laser, electroerosion or any other type of machining.
  • the elastic properties characteristic of amorphous metals are used to overmold or integrate functional and / or decorative elements in the rim and / or at the level of the arms and / or at the level of the hub, for example by means of corresponding inserts placed in the front mold. the introduction of the heated metal alloy between its glass transition temperature and its crystallization temperature to be at least partially amorphous.
  • the rim 2 may comprise housings 12 intended to receive second elements for adjusting the inertia and / or unbalance 14, as shown in FIG. figure 3 .
  • These housings 12 can advantageously be provided during the manufacture of the balance 1 by molding, in accordance with the methods of the invention.
  • the second inertia and / or unbalance adjustment elements 14, 15 can be, for example, weights, slotted weights, pins 14, split pins, or pins with unbalance 15, which act as weights. These elements are driven out or clipped into the housing correspondents 12.
  • On the figure 3 shown are a pin 14 inserted into its housing 12, as well as a pin with unbalance 15 inserted into its housing 12.
  • the figure 4 shows a sectional view along line AA of the figure 3 showing the pin with unbalance 15 inserted in the housing 12 provided in the rim 2.
  • these elements to increase the inertia of the balance are preferably used with a rim made of a low density material, such as titanium or zirconium, but can also be used with a rim made of another material.
  • the 12 units shown on the figure 3 can also constitute housings intended to receive aesthetic and / or luminescent elements, such as tritium tubes (not shown), or capsules of phosphorescent materials (of the Superluminova type, for example) or fluorescent.
  • aesthetic and / or luminescent elements such as tritium tubes (not shown), or capsules of phosphorescent materials (of the Superluminova type, for example) or fluorescent.
  • one or the other of the methods comprises a step of overmolding flexible centering elements 16, 17 on the hub 4, on its inner periphery or on its surface.
  • the hub 4 can include integrated flexible centering elements, which allow self-centering of the balance when it is mounted on an axis thanks to the elastic deformation of said flexible centering elements.
  • said integrated flexible centering elements 16 are elastic blades provided on the inner periphery of the hub 4 so as to be positioned in the hole 6.
  • said integrated flexible centering elements 17 are provided on the surface of the hub 4 and are distributed around the hole 6. The flexible centering elements 16 and 17 can advantageously be put in place during the manufacture of the balance 1 by molding, in accordance with the methods of the invention.
  • one or the other of the methods comprises a step of overmolding third flexible inertia adjustment elements 19, 20, 22a, 22b in the arm 8.
  • at least l one of the arms 8 carries integrated flexible third inertia adjustment elements.
  • the end of the arm 8 on the side of the rim 2 ends in two branches 8a, 8b forming between them a housing 18 in which is integrated a third element for adjusting the inertia 19 flexible bistable "V" for the adjustment frequency.
  • the housing 18 there is provided in the housing 18 a third element 20 for adjusting the inertia 20 flexible in buckling for adjusting the frequency.
  • the third inertia adjusting element 20 is made of a material having expansion properties different from the metal alloy of the balance of the invention, such as silicon or silicon oxide.
  • the end of the arm 8 on the side of the rim 2 ends in three branches 8a, 8b, 8c forming between them two housings 18a, 18b in which are integrated third elements for adjusting the inertia 22a, 22b flexible multi- stable ratchet for frequency adjustment.
  • These third flexible inertia adjustment elements 19, 20, 22a, 22b for the frequency adjustment can advantageously be put in place during the manufacture of the balance 1 by molding, in accordance with the methods of the invention.
  • These third flexible inertia adjustment elements 19, 20, 22a, 22b for frequency adjustment can be used as well when the entire balance wheel is in the same metal alloy as when the arms are made of a metal alloy, the rest of the balance, and in particular the rim, being in another material.
  • one or the other of the methods of the invention is used a mold having microstructures forming a decoration or a photonic network.
  • one of the arm 8, of the rim 2 and of the hub 4 has a structured surface condition. Only one of the elements can have a structured surface condition or all the elements of the balance can have a structured surface condition, this structured surface condition being able to be identical or different.
  • the figure 10 shows a balance of the invention for which the rim 2 has a structured surface condition different from the structured surface condition presented by the arm 8.
  • This structured surface condition can be a polished, satin, sandblasted, pearl, sunny condition , etc.
  • microstructures forming a photonic network in order to replicate these microstructures on the surface of the balance.
  • These microstructures can make it possible to create a photonic crystal giving the part a certain color, a hologram, or a diffraction grating which can constitute an anti-counterfeiting element.
  • the structures are introduced directly into the mold, and are replicated during the manufacture of the balances by hot forming, which no longer requires termination operations. It is also possible to add a logo to the mold.
  • the metal alloy used in the methods of the invention exhibits a coefficient of thermal expansion typically less than 25 ppm / ° C and greater than 7 ppm / ° C, and is capable of being in at least partially amorphous form when it is heated to a temperature between its glass transition temperature and its crystallization temperature.
  • the metal alloy used in the methods of the invention is based on an element chosen from the group consisting of platinum, zirconium, titanium, palladium, nickel, aluminum and iron.
  • the expression “based on an element” means that said metal alloy contains at least 50% by weight of said element.
  • Said metal alloy used in the present invention may be based on platinum and has a coefficient of thermal expansion of less than 12 ppm / ° C, preferably between 8 ppm / ° C and 12 ppm / ° C.
  • the metal alloy used in the present invention can also be based on zirconium and has a coefficient of thermal expansion below 12 ppm / ° C, preferably between 8 ppm / ° C and 11 ppm / ° C.
  • the metal alloy used in the present invention can also be based on palladium and has a coefficient of thermal expansion of less than 20 ppm / ° C, preferably between 13 ppm / ° C and 18 ppm / ° C.
  • the alloys used in the invention do not contain any impurities. However, they can include traces of impurities which can result, often inevitably, from the production of said alloys.
  • the alloys used in the present invention have a thermal expansion coefficient of less than 12 ppm / ° C and greater than 8 ppm / ° C, they can be used to make at least part of a balance which will be paired with a hairspring. preferably monocrystalline quartz.
  • the alloys used in the present invention having a coefficient of thermal expansion of less than 20 ppm / ° C and greater than 13 ppm / ° C can be used to make at least part of a balance which will be paired with a metal hairspring or in silicon.
  • said metallic alloy used in the present invention based on platinum consists, in atomic% values, of: 57.5% Pt, 14.7% Cu, 5.3% Ni, 22.5% P
  • Such an alloy has a coefficient of thermal expansion of between 11 and 12 ppm / ° C.
  • said metal alloy used in the present invention based on zirconium consists, in atomic% values, of: 58.5% Zr, 15.6% Cu, 12.8% Ni, 10.3% Al, 2.8% Nb
  • Such an alloy has a thermal expansion coefficient of between 10.5 and 11 ppm / ° C.
  • said metal alloy used in the present invention based on palladium consists, in atomic% values, of: 43% Pd, 27% Cu, 10% Ni, 20% P
  • Such an alloy has a coefficient of thermal expansion of between 15 and 16 ppm / ° C.
  • the balance according to the invention is made of a material making it possible to use a simple manufacturing process while having a thermal expansion coefficient making it possible to pair it with a monocrystalline quartz hairspring, and / or in metal or silicon. , preferably monocrystalline quartz.
  • the balance according to the invention also makes it possible to have at least arms having a thermal expansion coefficient allowing it to be paired with a monocrystalline quartz hairspring, and / or in metal or in silicon, while having a great inertia while keeping a compact and aesthetic serge geometry, of small volume, using a suitable serge, either comprising elements made of a material of greater density, or itself being made of a material of greater density.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Adornments (AREA)
  • Forging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Micromachines (AREA)

Claims (15)

  1. Verfahren zur Fertigung einer Unruh (1) für einen Zeitmesser, umfassend einen Fußkreis (2), eine Nabe (4) und mindestens einen Arm (8), der die Nabe (4) mit dem Fußkreis (2) verbindet, wobei der Fußkreis (2), die Nabe (4) und der Arm (8) aus einer Metalllegierung hergestellt sind, wobei das Verfahren die folgenden Schritte umfasst:
    a) Herstellen einer Gießform mit der Negativform der Unruh (1),
    b) Bereitstellen einer Metalllegierung, die einen Wärmeausdehnungskoeffizienten von weniger als 25 ppm/°C aufweist und in einer zumindest zum Teil amorphen Form sein kann, wenn sie auf eine Temperatur erhitzt wird, die zwischen ihrer Glasübergangstemperatur und ihrer Kristallisationstemperatur liegt,
    c) Einbringen der Metalllegierung in die Gießform, wobei die Metalllegierung auf eine Temperatur erhitzt wird, die zwischen ihrer Glasübergangstemperatur und ihrer Kristallisationstemperatur liegt, um warmgeformt zu werden und eine Unruh zu bilden,
    d) Abkühlen der Metalllegierung, um eine Unruh (1) aus der Metalllegierung zu erhalten,
    e) Herauslösen der im Schritt d) erhaltenen Unruh (1) aus ihrer Gießform,
    wobei das Verfahren dadurch gekennzeichnet ist, dass es einen Schritt der Umformung von ersten Regulierungselementen der Trägheit (10) in dem Fußkreis (2) umfasst, wobei die ersten Regulierungselemente der Trägheit (10) aus einem ersten Material hergestellt werden, das eine Dichte aufweist, die größer als die Dichte der Metalllegierung ist.
  2. Verfahren zur Fertigung einer Unruh für einen Zeitmesser, umfassend einen Fußkreis (2), eine Nabe (4) und mindestens einen Arm (8), der die Nabe (4) mit dem Fußkreis (2) verbindet, wobei die Nabe (4) und der Arm (8) aus einer Metalllegierung hergestellt sind und der Fußkreis (2) aus einem zweiten Material hergestellt ist, das eine Dichte aufweist, die größer als die Dichte der Metalllegierung ist, aus der die Nabe (4) und der Arm (8) hergestellt sind, wobei das Verfahren die folgenden Schritte umfasst:
    a) Herstellen einer Gießform mit der Negativform der Unruh,
    a') Einsetzen eines Fußkreises oder von Fußkreiselementen, die aus einem Material hergestellt sind, das eine Dichte aufweist, die größer als die Dichte der Metalllegierung ist, in die Gießform,
    b) Bereitstellen einer Metalllegierung, die einen Wärmeausdehnungskoeffizienten von weniger als 25 ppm/°C aufweist und in einer zumindest zum Teil amorphen Form sein kann, wenn sie auf eine Temperatur erhitzt wird, die zwischen ihrer Glasübergangstemperatur und ihrer Kristallisationstemperatur liegt,
    c) Einbringen der Metalllegierung in die Gießform, wobei die Metalllegierung auf eine Temperatur erhitzt wird, die zwischen ihrer Glasübergangstemperatur und ihrer Kristallisationstemperatur liegt, um warmgeformt zu werden und den Fußkreis oder die Fußkreiselemente zu umformen, um eine Unruh mit Einsätzen zu bilden,
    d) Abkühlen der Metalllegierung, um eine Unruh mit Einsätzen zu erhalten,
    e) Herauslösen der im Schritt d) erhaltenen Unruh aus ihrer Gießform.
  3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Fußkreis (2) Lagerungen (12) umfasst, die dazu vorgesehen sind, zweite Regulierungselemente der Trägheit und/oder des Ungleichgewichts (14, 15) aufzunehmen.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Fußkreis (2) Lagerungen (12) umfasst, die dazu vorgesehen sind, Zier- und/oder Leuchtelemente aufzunehmen.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen Schritt der Umformung von flexiblen Zentrierelementen (16, 17) auf der Nabe (4) umfasst.
  6. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die integrierten flexiblen Zentrierelemente (16) auf dem Innenumfang der Nabe (4) vorgesehen sind.
  7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es einen Schritt der Umformung von flexiblen dritten Regulierungselementen der Trägheit (19, 20, 22a, 22b) in dem Arm (8) umfasst.
  8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gießform Mikrostrukturen aufweist, die eine Verzierung oder ein Photonik-Netzwerk bilden.
  9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis eines Elements ist, das aus der Gruppe bestehend aus Platin, Zirkonium, Titan, Palladium, Nickel, Aluminium und Eisen ausgewählt ist.
  10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Platin ist und einen Wärmeausdehnungskoeffizienten von weniger als 12 ppm/°C, vorzugsweise zwischen 8 ppm/°C und 12 ppm/°C aufweist.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Platin in Atom-%-Werten aus
    - einer Platinbasis, deren Gehalt den Rest bildet,
    - 13 bis 17 % Kupfer,
    - 3 bis 7 % Nickel,
    - 20 bis 25 % Phosphor besteht.
  12. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Zirkonium ist und einen Wärmeausdehnungskoeffizienten von weniger als 12 ppm/°C, vorzugsweise zwischen 8 ppm/°C und 11 ppm/°C aufweist.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Zirkonium in Atom-%-Werten aus
    - einer Zirkoniumbasis, deren Gehalt den Rest bildet,
    - 14 bis 20 % Kupfer,
    - 12 bis 13 % Nickel,
    - 9 bis 11 % Aluminium,
    - 2 bis 4 % Niob besteht.
  14. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Palladium ist und einen Wärmeausdehnungskoeffizienten von weniger als 20 ppm/°C, vorzugsweise zwischen 13 ppm/°C und 18 ppm/°C aufweist.
  15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass die Metalllegierung auf der Basis von Palladium in Atom-%-Werten aus
    - einer Palladiumbasis, deren Gehalt den Rest bildet,
    - 25 bis 30 % Kupfer,
    - 8 bis 12 % Nickel,
    - 18 bis 22 % Phosphor besteht.
EP17210299.8A 2017-12-22 2017-12-22 Herstellungsverfahren einer unruh für uhren Active EP3502787B1 (de)

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EP17210299.8A EP3502787B1 (de) 2017-12-22 2017-12-22 Herstellungsverfahren einer unruh für uhren
EP20201790.1A EP3796102B1 (de) 2017-12-22 2017-12-22 Verfahren zur herstellung einer unruh für uhren
US16/150,524 US11307535B2 (en) 2017-12-22 2018-10-03 Process for producing a balance wheel for a timepiece
JP2018216249A JP6770049B2 (ja) 2017-12-22 2018-11-19 計時器用のバランス車を製造する方法
CN201811455309.4A CN109960137B (zh) 2017-12-22 2018-11-30 用于制造钟表的摆轮的方法
CN202110265760.5A CN112965355A (zh) 2017-12-22 2018-11-30 用于制造钟表的摆轮的方法
US17/669,476 US11640140B2 (en) 2017-12-22 2022-02-11 Process for producing a balance wheel for a timepiece

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EP3796101A1 (de) * 2019-09-20 2021-03-24 Nivarox-FAR S.A. Spiralfeder für uhrwerk
CH716669B1 (fr) * 2019-10-03 2023-02-15 Richemont Int Sa Procédé de fabrication d'un arbre de pivotement de balancier.
CN115537598B (zh) * 2022-10-10 2023-06-20 东莞理工学院 一种宽温域可调控线性低热膨胀钛铌合金及其制备方法
CN115537599B (zh) * 2022-10-13 2023-06-06 东莞理工学院 一种高弹性模量及近零线膨胀系数的钛铌合金及其制备方法

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EP1258786B1 (de) * 2001-05-18 2008-02-20 Rolex Sa Selbstkompensierende Feder für einen mechanischen Oszillator vom Unruh-Spiralfeder-Typ
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CN101589347A (zh) 2006-12-21 2009-11-25 康普利计时股份有限公司 用于钟表的机械振荡器
EP2104008A1 (de) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Monoblock-Regulierungsorgan und sein Herstellungsverfahren
EP2104005A1 (de) * 2008-03-20 2009-09-23 Nivarox-FAR S.A. Composite-Unruh und Herstellungsverfahren dafür
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EP3796102A1 (de) 2021-03-24
CN109960137A (zh) 2019-07-02
EP3502787A1 (de) 2019-06-26
EP3796102B1 (de) 2022-04-20
US11640140B2 (en) 2023-05-02
US20190196408A1 (en) 2019-06-27
JP6770049B2 (ja) 2020-10-14
US11307535B2 (en) 2022-04-19
CN112965355A (zh) 2021-06-15
US20220163923A1 (en) 2022-05-26
JP2019113533A (ja) 2019-07-11

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