EP3226082A1 - Komponente eines uhrwerks - Google Patents

Komponente eines uhrwerks Download PDF

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Publication number
EP3226082A1
EP3226082A1 EP17164652.4A EP17164652A EP3226082A1 EP 3226082 A1 EP3226082 A1 EP 3226082A1 EP 17164652 A EP17164652 A EP 17164652A EP 3226082 A1 EP3226082 A1 EP 3226082A1
Authority
EP
European Patent Office
Prior art keywords
glass
ceramic
component according
watch movement
movement component
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
EP17164652.4A
Other languages
English (en)
French (fr)
Other versions
EP3226082B1 (de
Inventor
Nicolas Yoakim
Gregory Bruttin
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.)
Richemont International SA
Original Assignee
Richemont International 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 Richemont International SA filed Critical Richemont International SA
Publication of EP3226082A1 publication Critical patent/EP3226082A1/de
Application granted granted Critical
Publication of EP3226082B1 publication Critical patent/EP3226082B1/de
Active 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
    • G04B29/00—Frameworks
    • G04B29/02—Plates; Bridges; Cocks
    • G04B29/027—Materials and manufacturing
    • 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
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • 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
    • G04B19/00—Indicating the time by visual means
    • 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
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/06—Details of striking mechanisms, e.g. hammer, fan governor
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/06—Alarm clocks adjustable for several preselected times with automatic stopping of the signal
    • 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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights

Definitions

  • the present invention relates to a watch movement component.
  • watch movement components are made of metal alloys that often have disadvantages, including internal stresses following shaping operations, a tendency to oxidation, a limited hardness for certain alloys to be compensated by subsequent treatments to the machining steps, a certain sensitivity to wear, tribological characteristics requiring the use of lubricants, a high density resulting in significant inertia of moving parts, and in some cases a sensitivity to magnetic fields which can disrupt the operation of a watch movement.
  • ceramics most often require sintering and baking operations with anisotropic shrinkage of the material. These methods also limit additional operations to the material, such as subsequent decoration or machining operations, which are only possible with specific tools, particularly because of the hardness and fragility of the material. material.
  • DRIE etching deep etching
  • the components made in this family of materials have a certain fragility and are brittle. Their assembly with other components also require special measures. Indeed, conventional assemblies such as driving or screwing are hardly applicable to components made of such materials.
  • the glasses have seen their use spread as a result of the development of hybrid production technologies, often involving the exposure of the material to a light wavelength and the etching of this irradiated zone in an appropriate environment.
  • photostructurable glasses most often sensitive to UV, or more standard glasses such as "fused silicate” (or quartz glass) or borosilicate, in the case of etching by exposure to a femtosecond laser. Exposure and chemical attack times, the equipment required and the geometries that are currently achievable greatly limit the use of such technologies.
  • An object of the invention is to overcome, at least in part, these disadvantages and to achieve a watch movement component obtained by conventional machining techniques and having interesting mechanical properties.
  • watch components made of such materials are particularly difficult to decorate. Indeed, to be decorated, they require complicated treatments.
  • the decoration of such watch components is sometimes essential, especially when it comes to display components.
  • Another object of the invention is therefore to obtain a decorated clock component that is easy to manufacture, that is to say a clock component comprising a localized modification of some of its optical properties that is achievable with the aid of easily reproducible treatments.
  • the subject of the invention is a watch movement component according to claim 1.
  • the watch movement component according to the invention comprises a glass-ceramic, said glass-ceramic comprising a crystalline phase representing at least 50% by volume of said glass-ceramic, the remainder of the glass-ceramic being a vitreous matrix, said crystalline phase being at least 50% of mica type.
  • the expression "glass-ceramic with a mica structure" is used to designate such a glass-ceramic.
  • the glass-ceramic component of the watch movement component according to the invention further comprises at least one additional element giving at least one zone of the glass-ceramic a color, shade or luminescence different from that of the remainder of the glass-ceramic.
  • the watch movement component according to the invention comprises at least two distinct glass ceramic areas of different colors, shades or luminescences.
  • Said at least one color zone, shade or luminescence different from that of the rest of the glass-ceramic can advantageously be obtained by exposure or irradiation of at least a portion of the glass-ceramic comprising said at least one additional element to a laser beam or by implantation localized at least one additional element, the additional element being or not previously loaded, as the case may be.
  • the watch movement component according to the invention is typically obtained by at least one mechanical machining step by removing material from a substrate of said glass-ceramic.
  • at least 50% of these machining steps are machining mechanical machining steps, chosen for example from the following conventional mechanical machining techniques: turning, milling, polishing, satin finishing, mechanical etching, drilling or cutting.
  • the glass-ceramic preferably has a density of less than 3 g / cm 3 .
  • said at least one additional element comprises metal oxides such as zirconium oxide and / or aluminum oxide.
  • a motion component watchmaker comprising such a glass-ceramic comprises at least two zones with different shades. These differences in hue can be obtained under the effect of a targeted exposure to a laser beam.
  • said at least one additional element comprises metal ions of one of the elements of the rare earth group, such as for example europium or erbium ions, of one of the elements of the group of transition metals, for example For example, yttrium ions or one of the elements of the group of poor metals, for example bismuth ions, the presence of such metal ions in the glass-ceramic conferring on said at least one zone of the component a luminescence different from that of the remainder of the component.
  • This difference in luminescence can be obtained under the effect of an exposure of at least a portion of the glass-ceramic comprising said at least one additional element to a laser beam or by ion implantation of the at least one additional element in a charged form . In this way, a watch movement component comprising at least two zones with different luminescence can be obtained.
  • said at least one additional element comprises metallic elements such as gold or copper imparting a different color to the component in the zone in which they are present. These elements can typically be made to the glass-ceramic by ion implantation in said at least one zone.
  • the glass-ceramic component of the watch movement component according to the invention may comprise zones of different colors or shades, these differences being obtained by selective diffusion of a tinting element in the glass-ceramic of the component.
  • a tinting element such as enamel can for example be used.
  • Other tinting agents may be used and diffused into the glass ceramic of the watch movement component according to the invention by increasing the temperature.
  • the watch movement component according to the invention preferably comprises at least one cavity, which can be blind or through, hollowed at least partially in the glass-ceramic.
  • it comprises a second material at least partially filling said cavity.
  • Said second material is typically a paint, a lacquer, a material having a photoluminescence higher than that of the glass-ceramic, a metal-based material, and / or any other material for providing optical contrast with said glass-ceramic.
  • the watch movement component according to the invention may also comprise a coating in a third material, said coating covering at least a portion of the surface of the glass-ceramic.
  • Said third material is typically a paint, a lacquer, a material having a photoluminescence higher than that of said glass-ceramic, a metal-based material and / or any other material for providing optical contrast with said glass-ceramic.
  • the metallic material constituting the second and / or third material preferably has a density greater than the density of the glass-ceramic, is chosen from the family of precious metals and / or from the family of transition metals, and / or comprises at least one element chosen from a nitride, an oxide and / or a carbide of a metallic element.
  • said second and third materials are identical.
  • the watch movement component is typically an element constituting a blank of a movement, for example a plate, a bridge or a member of a tourbillon cage. It may also be a striking hammer, an oscillating mass rotor, a display member, a cam, in particular a resetting heart, a rocker, a mobile including at least one toothed sector, for example a toothed wheel, a pivot or an exhaust member, said watch movement component being optionally perforated.
  • the openwork portion is typically a skeleton type structure.
  • the watch movement components according to the invention partially offer the properties of the nonmetallic materials mentioned above by overcoming the production difficulties of the latter. They have particular advantages of stability of the material, in particular the absence of known internal stresses in metals, a density close to that of glass, a hardness higher than that of certain metals, a resistance to wear and tribological properties higher. In addition, hunting and assembly with other components are easier than with fragile materials such as ceramics and silicon.
  • a watch movement component 10, 20, 30, 40, 50 according to the invention comprises a glass-ceramic comprising a crystalline phase representing less than 50% by volume of said glass-ceramic, the remainder of the glass-ceramic being a vitreous matrix, said crystalline phase being at least 50% of mica type.
  • the crystalline phases of the mica type are at least partly in the form of lamellae. These last ones favor the machinability of the glass-ceramic with mica structure.
  • Said glass-ceramic contains silicon dioxide and other elements, partly oxides, a non-limiting composition of the material further comprising the following elements: MgO, Al 2 O 3 , K 2 O, B 2 O 3 and F. may be completed, partially or completely replaced by other elements, chosen in particular from magnesium fluoride, strontium oxide, iron oxides, chromium or other metal elements. Certain elements such as copper or gold can advantageously modify the colors of the glass-ceramic.
  • glass-ceramics mica structure do not require sintering step or baking during their shaping to obtain the watch component according to the invention, and have the advantage of being machined without special tools.
  • a watch movement component according to the invention is produced by machining a glass-ceramic substrate with a mica structure. It is typically obtained by at least one mechanical machining step, by removal of material. Preferably, at least 50% of the machining steps of the component are machining mechanical machining steps chosen, for example, from the following conventional mechanical machining techniques: turning, milling, polishing, satin-finishing, mechanical etching, drilling or cutting.
  • a glass ceramic with a mica structure as defined above typically has a density of less than 3 g / cm 3 , which makes its advantageous use for producing mobile elements, the inertia of the components then being greatly reduced. These properties are also particularly advantageous for mobiles, subject to low torques or accelerations, or for display disks.
  • the watch movement component according to the invention is typically selected from the set of elements constituting a blank of a movement, for example a plate 20, a bridge or a member of a tourbillon cage. It may also be a striking hammer 40, an oscillating mass rotor 50, a display member 30, a cam, in particular a resetting heart, a rocker, including a mobile comprising at least one toothed sector, for example a toothed wheel 10, a pivot or an exhaust member. It is typically a display member 30, for example a display disk or a fixed member such as a dial or a body constituting part of a dial.
  • the watch movement component according to the invention can undergo various treatments and take various forms.
  • the perforated portions can typically be indicative of a display component 30 with a skeleton effect 31, as illustrated in FIGS. figures 3a and 3g .
  • An advantage of using a glass ceramic with a mica structure compared to the metals traditionally used in watch movement components, comes from the absence or reduction of the internal stresses after machining, which makes it possible, in particular in the case highly perforated parts such as bridges or so-called skeleton blanks (plate 20), to ensure high geometries and tolerances during assemblies, overcoming the problems of warping or other encountered in thin metal structures.
  • the mica-structure glass-ceramic used comprises certain compounds such as, for example, metal oxides, such as zirconium oxide and / or aluminum oxide
  • its reflectance may be modified, in particular under the effect of laser exposure or irradiation at specific frequency, duration, and wavelength pulsations.
  • it is possible to change the shade of the material usually in shades ranging from white to black, through intermediate gray, selectively and localized. This can for example be used to write indications 32 on a display component 30 as shown in FIGS. Figures 3a and 3c .
  • the presence of certain other metal elements in the glass-ceramic mica structure used such as copper or gold in addition to varying the hue of the entire glass ceramic in some color spectra.
  • these metallic elements are brought to the vitroceramic in a localized manner, typically by ion implantation, they confer a variation of the color of the glass-ceramic only in the part or parts of the glass-ceramic in which they are present.
  • the mica-structure glass-ceramic of the watch movement component may comprise metal ions of one of the elements of the rare earth group, such as, for example, europium or erbium ions, of one of the elements of the group of transition metals, for example yttrium ions or one of the elements of the group of poor metals, for example bismuth ions.
  • Such ions can be introduced into the glass-ceramic by any appropriate technique, including doping or ion implantation.
  • the mica-structure glass-ceramic of the watch movement component comprises such ions, the luminescence of said glass-ceramic with a mica structure can be modified, in particular under the effect of a laser irradiation at frequency pulses, of duration and specific wavelengths.
  • Such irradiation makes it possible to obtain luminescence by excitation of photons and thus to modify the luminescence properties of the exposed zone.
  • This can for example be used to write indications 32 on a display component 30 as shown in FIGS. Figures 3a and 3c .
  • Another possibility is to introduce these ions previously loaded with laser ion implantation.
  • the watch movement component according to the invention advantageously comprises at least one cavity 33, 43, 53, blind or through, hollowed at least partly in the glass-ceramic.
  • a cavity 33, 43, 53 may in particular take the form of indications dug in the glass-ceramic of a display component 30 as shown in FIGS. figures 3a and 3d to 3f or of any geometrical shape in a striking hammer 40 or in a rotor of oscillating mass 50.
  • This cavity 33, 43, 53 may advantageously be filled, at least in part, with a second material 34, 44, 54.
  • This second material may be a paint, a lacquer, a material having a higher photoluminescence than said glass-ceramic, a metal-based material and / or any other material for providing optical contrast with said glass-ceramic.
  • hybrid components whose structure is made of glass ceramic mica structure, so rigid and controllable hardness, comprising at least one cavity 43, 53 filled with a metal density typically higher than that of glass-ceramic mica structure, such as a precious metal, to increase the inertia.
  • One possibility concerning the filling of a cavity 33, 43, 53 consists in firstly making a metal coating 46, 56, partial or complete, of at least one surface of said cavity and then filling it with a technique of growth of a metal layer with a material identical to or different from that constituting said metal coating.
  • Figures 4a and 4b illustrate a ring hammer 40 machined in a glass-ceramic substrate with a mica structure and metallized with a metal material 46, said material 46 having typically been deposited in a cavity 43 hollowed out in the glass-ceramic with a mica structure constituting, at least in part, said hammer of ring 40.
  • the cavity 43 metallized with a metal material 46 was then filled by a technique of growth of a metal layer from the coating made in a first time, in the same material 44 or in another metallic material that used for metallization.
  • Such a striking hammer 40 which is caused to shock a resonance body, has favorable properties of hardness, wear and inertia, and even interesting acoustic properties, depending on the thickness of its glass-ceramic wall with a mica structure. , because of the crystalline stamp of this material.
  • FIGS. 5a and 5b for their part, they illustrate an oscillating mass rotor 50 machined in a glass-ceramic with a mica structure, said glass-ceramic having been hollowed out to form a cavity 53, said cavity being filled with a material 54, typically with a metal which is denser than the glass-ceramic with a mica structure used, for example with gold, to weigh it down.
  • the filling of the cavity 53 is typically carried out by a technique of growth of a metal layer 54 from the coating 56 made initially in a material different from or identical to the material of the metal layer 54.
  • a surface coating may be made on at least a portion of the glass-ceramic surface mica structure of the watch movement component according to the invention, for example to represent indications 32 on a display component, as illustrated in FIG. figure 3b .
  • the watch component according to the invention comprises at least one cavity 33, 43, 53
  • such a surface coating may also be made, at least in part, inside said at least one cavity 33, 43, 53.
  • Such a surface coating may consist of a metallization of a part of the glass-ceramic surface of the watch movement component according to the invention.
  • Said metallization can be carried out by various known methods, for example, but without being limiting, by PVD or CVD. It may be used to promote the bonding of a glass-ceramic surface with a mica structure of the watch movement component to another metallic or metallized element of the watch movement component or movement, by soldering, brazing, pressing or any other method the same function of connection between two metallic or metallized elements.
  • the material of the surface coating is typically selected from materials comprising at least one metal element, said metal element having a density greater than the density of the glass-ceramic and / or being selected from the family of precious metals.
  • a surface coating with a metal or metalloid may typically be completed with a step leading to an oxide, nitride and / or carbide thereof. This may be of interest for example to reinforce a surface of the component subjected to high friction and / or wear stress, where the sliding must be maximized or a surface to cooperate with another surface without liquid lubrication or with conditions particular lubrication.
  • Such components may include pivots, cogs, exhaust members or any other component subject to such actions.
  • a pivot can be made monolithically in the glass-ceramic mica structure with the mobile which contains it, the surface of the pivot undergoing the efforts can then be subjected to this process reinforcing its tribological properties.
  • the watch movement components according to the invention are advantageously subjected to finish or decoration treatments including in particular steps such as chamfering or engraving.
  • the watch movement components according to the invention have many advantages. They are particularly easily achievable, mainly by mechanical machining in a mica glass ceramic, without the need for sintering or baking operations to obtain the clock component and without anisotropic removal of the material. It will further be noted that the watch movement component according to the invention also comprises at least one zone of its vitroceramic with a mica structure of a different color, shade or luminescence than that of the rest of its glass-ceramic, this zone typically causing indications or problems. patterns constituting decorations on the surface of the component. Thus, a watch movement component decorated according to the invention can be obtained by localized modification of some of its optical properties using easily reproducible treatments and without adding extra thickness to the component.
  • the watch movement components according to the invention also have a relatively low density which makes it possible to reduce their inertia with respect to the metal watch movement components. They can also be perforated for example in the form of skeleton type structures, while ensuring high geometries and tolerances during assemblies, overcoming the warping or other problems encountered in thin metal structures. In addition, they may be coated with a layer of a second material, typically metallic or photoluminescent for purposes such that improving tribological properties or assembling with other components or for decorative purposes.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Glass Compositions (AREA)
  • Laser Beam Processing (AREA)
  • Surface Treatment Of Glass (AREA)
EP17164652.4A 2016-04-01 2017-04-03 Komponente eines uhrwerks Active EP3226082B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4312016 2016-04-01

Publications (2)

Publication Number Publication Date
EP3226082A1 true EP3226082A1 (de) 2017-10-04
EP3226082B1 EP3226082B1 (de) 2020-02-26

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Family Applications (3)

Application Number Title Priority Date Filing Date
EP17164653.2A Withdrawn EP3226083A1 (de) 2016-04-01 2017-04-03 Rohwerk eines uhrwerks
EP17164654.0A Active EP3232276B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks
EP17164652.4A Active EP3226082B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks

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Application Number Title Priority Date Filing Date
EP17164653.2A Withdrawn EP3226083A1 (de) 2016-04-01 2017-04-03 Rohwerk eines uhrwerks
EP17164654.0A Active EP3232276B1 (de) 2016-04-01 2017-04-03 Komponente eines uhrwerks

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270818A (zh) * 2018-11-07 2019-01-25 精时拓飞（深圳）科技有限公司 一种微型机械的自动供能模块

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398315A (en) * 1972-08-15 1975-06-18 Dassortiments Reunies Fab Method for manufacturing dials for watches and dials for watches manufactured according to said method
DE102006059274A1 (de) * 2006-12-13 2008-06-26 Stein, Ralf Verfahren zur Herstellung eines Bauteils für das Werk einer mechanischen Uhr
WO2016033253A1 (en) * 2014-08-27 2016-03-03 Apple Inc. Sapphire cover for electronic devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1398315A (en) * 1972-08-15 1975-06-18 Dassortiments Reunies Fab Method for manufacturing dials for watches and dials for watches manufactured according to said method
DE102006059274A1 (de) * 2006-12-13 2008-06-26 Stein, Ralf Verfahren zur Herstellung eines Bauteils für das Werk einer mechanischen Uhr
WO2016033253A1 (en) * 2014-08-27 2016-03-03 Apple Inc. Sapphire cover for electronic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270818A (zh) * 2018-11-07 2019-01-25 精时拓飞（深圳）科技有限公司 一种微型机械的自动供能模块

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Publication number Publication date
EP3232276A1 (de) 2017-10-18
EP3232276B1 (de) 2020-08-26
EP3226083A1 (de) 2017-10-04
EP3226082B1 (de) 2020-02-26

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