EP2350746A1 - Procédé de fabrication d'une platine de montre - Google Patents
Procédé de fabrication d'une platine de montreInfo
- Publication number
- EP2350746A1 EP2350746A1 EP09736982A EP09736982A EP2350746A1 EP 2350746 A1 EP2350746 A1 EP 2350746A1 EP 09736982 A EP09736982 A EP 09736982A EP 09736982 A EP09736982 A EP 09736982A EP 2350746 A1 EP2350746 A1 EP 2350746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bridge
- plate
- platen
- shape
- amorphous
- 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
Links
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/003—Selecting material
- B21J1/006—Amorphous metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- 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
- G04B19/06—Dials
-
- 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
Definitions
- the present invention relates to a method for producing a timepiece element.
- the invention relates to a method for manufacturing a timepiece element that overcomes the aforementioned drawbacks of the art. prior to providing a platinum cheaper and faster to produce while having a precision at least equal to that of the prior art.
- the invention relates to a method for producing a watch plate mentioned above, which is characterized in that it comprises the following steps: a) providing the material constituting the plate comprising at least one element metallic; b) forming said platen; c) cooling the assembly so as to obtain said timepiece platen in an at least partially amorphous state; and d) recovering said platen.
- the method utilizes the advantageous shaping properties of amorphous materials by applying it to a simple forging process.
- these amorphous metals have the particular characteristic of softening while remaining amorphous in a temperature range [Tg - Tx] given specific to each alloy (with Tg: glass transition temperature and Tx: crystallization temperature). It is thus possible to shape them under a low stress of the order of MPa and at low temperatures down to at least 200 ° C depending on the material. This then makes it possible to reproduce fine and precise geometries very precisely because the viscosity of the alloy decreases sharply and the latter thus marries all the details of the dies. This is then typically suitable for a complex and precise piece such as a watch plate.
- the invention also relates to a second embodiment that uses the principle of casting.
- An advantage of this embodiment is that it is simpler to perform and does not require the use of an amorphous preform. Indeed, such a method uses simple techniques for making parts by casting, thus making the tooling to use less complex associated with the use of the amorphous zone of said material. As for the first embodiment, this then makes it possible to reproduce very precisely fine and precise geometries because the viscosity of the alloy decreases sharply and the latter thus marries all the details of the mold. This simplification then allows a substantial financial gain.
- Another advantage stems from this ability to perfectly match the shapes of the mold. Indeed, it can be expected to couple the platinum manufacturing steps with those of decorations at the same time. This solution is conceivable by producing the decorations directly on the mold or the dies in order to reproduce them directly during the manufacture of the plate. This allows a new saving of time and money.
- the present invention also relates to a method for producing a timepiece bridge. Advantageous embodiments of this method are the subject of dependent claims 3 to 26.
- a watch movement consists of a plate on which is fixed the mechanism of the watch.
- the plate supports the energy storage members, the regulating members and the driving members of said movement.
- the present invention consists of a manufacturing method 1 of elements such as a bridge or a plate for a timepiece.
- elements such as a bridge or a plate for a timepiece.
- the realization of the plate will be taken as an example, the realization of the decks of the watch being identical.
- a first embodiment consists of using hot forming with the aid of a press.
- the first step A 1 consists first of all in making the matrices of the stage. These matrices each have an internal face comprising the negative imprint of the plate to be produced. These matrices are provided with means for the evacuation of surplus material. Of course, the realization of such matrices not being part of the object of the present invention, all the possible methods for making these matrices are conceivable.
- this first step A 1 consists in providing the material in which the plate will be made.
- the material used is an at least partially amorphous material.
- a totally amorphous material will be used, said material possibly being a precious metal or not.
- the metal is an alloy.
- amorphous material advantageously allows a reduction in dimensions.
- the amorphous materials have deformation and elastic limit characteristics such that they can undergo higher stresses before deforming plastically. So at equivalent stresses with respect to a platinum of crystalline material, a reduction of the dimensions and in particular of the thickness is conceivable.
- next step B 1 is to manipulate the whole in order to achieve said element.
- step B 1 consists in producing a preform made of amorphous material.
- This preform consists of a piece of appearance and dimensions similar to the final piece.
- the preform is in the form of a disk. It is then necessary for said preform to always have an amorphous structure.
- the dies are placed in the hot press. These matrices are then heated until the material-specific temperature is reached, preferably between its glass transition temperature Tg and its crystallization temperature Tx. Once the dies are warmed up, the preform is placed on one of the dies. Pressure is then exerted on the preform by bringing the matrices together to replicate their shape on said amorphous metal preform. This pressing operation is performed for a predefined period of time. Once this time has elapsed, the dies open so that the cooling step C of the molded part can begin.
- the hot forming principle advantageously offers a high precision of the parts obtained.
- This accuracy is allowed by maintaining the amorphous metal material at a temperature between Tg and Tx. Indeed, when an amorphous material is heated up to this temperature range, its viscosity decreases sharply passing for some materials from 10 20 Pa.s "1 to 10 5 Pa.s " 1 . This then allows the amorphous material to better fill the spaces of said negative impressions of each matrix which facilitates the production of complex parts.
- the plate is made by casting, for example pouring a liquid metal into a mold. To do this, step A 2 consists first of all in producing the platen mold by any possible method.
- this first step is to provide the material in which the plate will be made.
- the melting temperature of the amorphous metals is lower than that of crystalline metals, the implementation of the process is then facilitated. It can also be provided that the casting is of the injection type allowing the material in liquid form to better match the shapes of the mold.
- step B 2 of shaping the material For this, the constituent material of the platen is then heated to be put in liquid form. Once liquefied, this material is injected into the mold.
- the next step consists in solidifying said element.
- This solidification consists of a cooling step called step C.
- This step C is carried out rapidly in order to descend as quickly as possible to a temperature below Tg.
- a cooling too slow allows the atoms to be structured in form. mesh and thus to crystallize the metal whereas a fast cooling makes it possible to freeze the atoms in order to avoid that they are structured.
- the purpose is to maintain the initial at least partially amorphous state
- the aim is to obtain an amorphous or at least partially amorphous state.
- the use of the metal casting and then the cooling step C to make amorphous metal is more accurate than its crystalline metal equivalent.
- the amorphous metal does not have a crystalline structure when it solidifies, the amorphous metal undergoes very little the effects of material removal due to solidification.
- this solidification shrinkage can reach 5 to 6%, which means that the part has its size decreased by 5 to 6% during solidification. In the case of the amorphous metal, this shrinkage is about 0.5%.
- the fourth step D then consists in recovering said platen once it has solidified.
- Step E consists in inserting in the plate complementary members such as ruby bearings used for example to support the axes of the gear wheels forming the gear of the watch.
- this insertion of ruby bearings, during step E is performed by hot crimping.
- the plate is heated locally to the place where said bearing must be inserted, at a temperature between Tg and Tx. Once the place is warmed up, the ruby landing is approached from the place and then pushed into the stage.
- step E the bearing is heated to a temperature above Tg and then pressed into the plate. The heat released by said bearing locally heats the plate to a temperature above Tg facilitating insertion. Then, the platen is cooled rapidly to keep the amorphous state of the metal and is deburred from any surplus material.
- This step E thus allows better grip of the bearing in the plate thanks to the ability of the amorphous material to marry the contours. Step E also saves time and money because of its simplicity.
- the bearing is directly placed in the mold or on the dies and inserted during steps B 1 or B 2 .
- steps B 1 or B 2 it can be advantageously provided that these bearings are directly integrated in the cast or stamped form, during the steps B 1 or B 2 forming a monoblock element that is to say that the bearings are an integral part of the element and not a reported part.
- the method 1 may also provide a step F of recrystallization of said platinum.
- the platen is heated to reach a temperature at least equal to the crystallization temperature of the amorphous metal.
- the cooling is then performed so that the atoms have time to structure.
- This step may take place after the recovery step D (in double line in FIG. 1) or after the step E of insertion of the complementary members (in single line in FIG. 1).
- This recrystallization can be used to advantageously modify certain physical, mechanical or chemical properties of the material such as toughness, hardness or coefficient of friction.
- a variant of method 1 consists in making decorations in step B 1 or B 2 of the embodiments above.
- the decorations of the platinum such as decorations type Geneva coast, beading, satin or guilloche are made directly in the negative impressions of said mold or said dies.
- this variant also makes it possible to do without the heavy tools currently used to make these decorations in series. It is understood that the method 1 allows the realization of a platinum decorated more quickly and, incidentally, cheaper way.
- step B 2 of the second embodiment it may be provided to directly perform the tapping screw threads in step B 2 of the second embodiment. This operation would then be performed during casting by inserts provided in the mold.
- the plate may be square or rectangular in shape and that the ruby bearings are not the only complementary members that can be inserted.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Adornments (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09736982A EP2350746B1 (fr) | 2008-10-21 | 2009-10-21 | Procédé de fabrication d'une platine de montre |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08167196A EP2180385A1 (fr) | 2008-10-21 | 2008-10-21 | Procédé de fabrication d'une platine de montre |
| EP09736982A EP2350746B1 (fr) | 2008-10-21 | 2009-10-21 | Procédé de fabrication d'une platine de montre |
| PCT/EP2009/063782 WO2010046381A1 (fr) | 2008-10-21 | 2009-10-21 | Procédé de fabrication d'une platine de montre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2350746A1 true EP2350746A1 (fr) | 2011-08-03 |
| EP2350746B1 EP2350746B1 (fr) | 2013-04-03 |
Family
ID=40512475
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08167196A Withdrawn EP2180385A1 (fr) | 2008-10-21 | 2008-10-21 | Procédé de fabrication d'une platine de montre |
| EP09736982A Active EP2350746B1 (fr) | 2008-10-21 | 2009-10-21 | Procédé de fabrication d'une platine de montre |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08167196A Withdrawn EP2180385A1 (fr) | 2008-10-21 | 2008-10-21 | Procédé de fabrication d'une platine de montre |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US9207644B2 (fr) |
| EP (2) | EP2180385A1 (fr) |
| JP (1) | JP5351276B2 (fr) |
| KR (1) | KR101292964B1 (fr) |
| CN (1) | CN102224465B (fr) |
| WO (1) | WO2010046381A1 (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2390732A1 (fr) * | 2010-05-27 | 2011-11-30 | Association Suisse pour la Recherche Horlogère | Ressort de barillet |
| EP2400352A1 (fr) * | 2010-06-22 | 2011-12-28 | The Swatch Group Research and Development Ltd. | Système d'échappement pour pièce d'horlogerie |
| US9599965B2 (en) | 2010-06-22 | 2017-03-21 | The Swatch Group Research And Development Ltd | Process for adjusting the relative position of a first and a second piece of a mechanical assembly |
| EP2466394A1 (fr) * | 2010-12-17 | 2012-06-20 | The Swatch Group Research and Development Ltd. | Capsule pour instrument scientifique |
| EP2708372A1 (fr) * | 2012-09-18 | 2014-03-19 | The Swatch Group Research and Development Ltd. | Instrument d'écriture |
| EP2796066A1 (fr) * | 2013-04-26 | 2014-10-29 | Omega SA | Piece décorative réalisée par sertissage |
| US10772396B2 (en) * | 2012-12-21 | 2020-09-15 | Omega S.A. | Decorative piece produced by setting on amorphous metal |
| EP2934221B1 (fr) | 2012-12-21 | 2017-03-22 | Omega SA | Piece decorative realisee par sertissage |
| CN104597746A (zh) * | 2015-02-04 | 2015-05-06 | 乌鲁木齐史派玉源文化科技有限公司 | 玉石表表镜的热压镶嵌方法 |
| CN206372035U (zh) * | 2016-10-10 | 2017-08-04 | 东莞市坚野材料科技有限公司 | 具有抗菌功能的非晶态合金制成的可穿戴设备 |
| JP6512536B2 (ja) * | 2017-03-08 | 2019-05-15 | カシオ計算機株式会社 | 指針および時計 |
| EP3502786A1 (fr) | 2017-12-22 | 2019-06-26 | The Swatch Group Research and Development Ltd | Balancier pour pièce d'horlogerie et procédé de fabrication d'un tel balancier |
| EP3879354B1 (fr) * | 2020-03-09 | 2025-07-30 | The Swatch Group Research and Development Ltd | Masse de remontage oscillante munie d'un element decoratif pour mouvement automatique de pièce d'horlogerie |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145139A (en) * | 1979-04-26 | 1980-11-12 | Seiko Epson Corp | Exterior parts for watch |
| JPS57108686A (en) * | 1980-12-25 | 1982-07-06 | Seiko Instr & Electronics Ltd | Hand for wrist watch |
| JPH04124246A (ja) * | 1990-09-13 | 1992-04-24 | Alps Electric Co Ltd | 時計の文字盤 |
| JP2001293551A (ja) * | 2000-04-14 | 2001-10-23 | Citizen Watch Co Ltd | アモルファス合金製部材の製造方法 |
| AU2003295809A1 (en) * | 2002-11-22 | 2004-06-18 | Liquidmetal Technologies, Inc. | Jewelry made of precious amorphous metal and method of making such articles |
| WO2005024274A1 (fr) * | 2003-09-02 | 2005-03-17 | Namiki Seimitsu Houseki Kabushiki Kaisha | Engrenage de precision, son mecanisme d'engrenage et procede de production d'engrenage de precision |
| JP2005201789A (ja) * | 2004-01-16 | 2005-07-28 | Seiko Epson Corp | 部材の成形方法および時計外装部品並びに装飾品 |
| CN100482406C (zh) * | 2007-04-13 | 2009-04-29 | 辽宁新华阳刃具复合材料有限公司 | 三层复合刀刃的刃具钢板的制造方法 |
-
2008
- 2008-10-21 EP EP08167196A patent/EP2180385A1/fr not_active Withdrawn
-
2009
- 2009-10-21 JP JP2011532616A patent/JP5351276B2/ja active Active
- 2009-10-21 EP EP09736982A patent/EP2350746B1/fr active Active
- 2009-10-21 WO PCT/EP2009/063782 patent/WO2010046381A1/fr not_active Ceased
- 2009-10-21 KR KR1020117011401A patent/KR101292964B1/ko not_active Expired - Fee Related
- 2009-10-21 CN CN200980146378.XA patent/CN102224465B/zh active Active
- 2009-10-21 US US13/124,975 patent/US9207644B2/en active Active
-
2015
- 2015-06-05 US US14/731,508 patent/US20150266089A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010046381A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150266089A1 (en) | 2015-09-24 |
| WO2010046381A1 (fr) | 2010-04-29 |
| US20120024432A1 (en) | 2012-02-02 |
| US9207644B2 (en) | 2015-12-08 |
| HK1163267A1 (en) | 2012-09-07 |
| WO2010046381A8 (fr) | 2011-06-30 |
| EP2350746B1 (fr) | 2013-04-03 |
| CN102224465A (zh) | 2011-10-19 |
| JP2012512384A (ja) | 2012-05-31 |
| KR101292964B1 (ko) | 2013-08-02 |
| EP2180385A1 (fr) | 2010-04-28 |
| CN102224465B (zh) | 2014-06-18 |
| KR20110092278A (ko) | 2011-08-17 |
| JP5351276B2 (ja) | 2013-11-27 |
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