EP4427100A1 - Composant horloger monolithique réalisé en impression multi-métallique - Google Patents
Composant horloger monolithique réalisé en impression multi-métalliqueInfo
- Publication number
- EP4427100A1 EP4427100A1 EP22805867.3A EP22805867A EP4427100A1 EP 4427100 A1 EP4427100 A1 EP 4427100A1 EP 22805867 A EP22805867 A EP 22805867A EP 4427100 A1 EP4427100 A1 EP 4427100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jeweler
- monolithic
- component
- watch
- component 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 47
- 238000007639 printing Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000005245 sintering Methods 0.000 claims description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 17
- 239000010931 gold Substances 0.000 claims description 17
- 229910052737 gold Inorganic materials 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 229910001369 Brass Inorganic materials 0.000 claims description 13
- 239000010951 brass Substances 0.000 claims description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- 229910001020 Au alloy Inorganic materials 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 10
- 239000003353 gold alloy Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 239000010937 tungsten Substances 0.000 claims description 8
- 229910001080 W alloy Inorganic materials 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 235000019589 hardness Nutrition 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- 238000009826 distribution Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- -1 aluminum bronze Chemical compound 0.000 description 4
- 239000010979 ruby Substances 0.000 description 4
- 229910001750 ruby Inorganic materials 0.000 description 4
- 238000010146 3D printing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000010437 gem Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
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- 238000001704 evaporation Methods 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- 229920005596 polymer binder Polymers 0.000 description 2
- 239000002491 polymer binding agent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000000172 allergic effect Effects 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 230000004927 fusion Effects 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
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- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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- 238000005498 polishing Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002490 spark plasma sintering Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000010938 white gold Substances 0.000 description 1
- 229910000832 white gold Inorganic materials 0.000 description 1
- 239000010930 yellow gold Substances 0.000 description 1
- 229910001097 yellow gold Inorganic materials 0.000 description 1
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
- G04B5/00—Automatic winding up
- G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
- G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
-
- 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
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
- A44C27/001—Materials for manufacturing jewellery
- A44C27/002—Metallic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
-
- 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
- G04B17/04—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
- G04B29/00—Frameworks
- G04B29/02—Plates; Bridges; Cocks
- G04B29/022—Bridges
-
- 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
- G04B37/00—Cases
- G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
-
- 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
-
- 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
- G04B5/165—Weights consisting of several parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
-
- 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
- G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
- G04B17/325—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring in a fixed position, e.g. using a block
Definitions
- the present invention generally relates to the field of watchmaking, more particularly the field of the manufacture of watchmaking components, such as for example the oscillating weights, the balances, the movements, the middles or the watch cases as well than the field of jewelry.
- the document CH715022 discloses a process for manufacturing a watchmaking or jewelery covering component made of a composite material comprising a reinforcement formed from a preferably openwork structure and a matrix composed of a synthetic material, said process comprising the successive steps consisting of: a) producing a 3D file of the reinforcement, b) constructing said reinforcement by additive manufacturing, c) embedding all or part of said reinforcement within the synthetic material.
- the present invention aims to provide a new construction of watch components, offering new mechanical and / or aesthetic possibilities, while facilitating manufacture.
- the invention relates, in a preliminary aspect, to a monolithic watch or jeweler component comprising:
- first portion formed from a first sintered metal powder, the first portion having a first mechanical characteristic selected from a first density, a first hardness and a first Young's modulus
- the second portion having a second mechanical characteristic chosen from among a second density, a second hardness and a second Young's modulus, in which the first mechanical characteristic is different from the second mechanical characteristic and in that the first density is at least 50% greater than the second density, preferably at least 60% greater, very preferably at least 70% greater; or the first hardness is greater than the second hardness, preferably greater than 20%, very preferably greater than 50%; or the first Young's modulus is higher than the second Young's modulus, preferably higher by 20%, very preferably higher by 50%.
- the first portion has a first predetermined pattern and the second portion has a second predetermined pattern.
- the invention relates, in a first aspect, to a monolithic watch or jeweler component comprising:
- first portion having a first density and formed of a first sintered metal powder
- second portion having a second density and formed of a second sintered metal powder, in which the first density is at least 50% higher than the second density, preferably at least 60% higher, very preferably at least 70% higher.
- sintered powder is meant a powder having undergone sintering as a manufacturing process consisting in heating the powder, with or without total melting of the powder. Under the effect of heat, the grains of the powder coalesce with each other, at least locally, which ensures the cohesion and general strength of the component obtained by sintering. In other words, by coalescence is meant a meeting or fusion of elements which are in contact.
- the heating can be carried out by means of a laser, by microwaves, by plasma, by induction or any other means.
- the powder(s) can be agglomerated or preformed beforehand.
- the powder(s) can be pressurized before or after heating.
- Sintering can also involve a binder, that is to say that the grains of the powder are bonded together by a binder before the heating step.
- a debinding step is generally understood to mean the elimination, by heat treatment or by the action of a solvent, of the binder present in a part previously obtained by shaping a mixture of metal (or ceramic) powder and polymer binder. .
- It can be an intermediate step in which the binder is removed from the component, for example by degrading and/or evaporating the binder (burning), by melting it or by chemical action.
- monolithic component is meant a component in a single piece, in a single block, solid.
- monolithic component is meant here a component for which the mechanical assembly of the component itself is not achieved by screwing, riveting, pinning or driving in, for example. In other words, there is no screw, rivet or pin to assemble the first portion to the second portion; and the first portion is not flushed with the second portion or vice versa.
- This makes it possible to propose a new watch component construction, in metal, with an optimized distribution of the densities of the component portions. This allows component construction using sintered metal powders, adjusting the density of each portion so as to optimize operation and weight distribution on the component, while having a monolithic component, more robust and reliable. .
- the monolithic watchmaker or jeweler component is an oscillating weight comprising a segment and in which the first portion forms the segment.
- the monolithic watchmaker or jeweler component comprises a hub, and the second portion is an arm arranged between the hub and the segment.
- the second portion comprises the hub and the arm, the arm being arranged between the hub and the segment.
- the first portion is made of gold or gold alloy, platinum or platinum alloy, tungsten or tungsten alloy, and
- the second portion is made of copper, copper alloy or brass, titanium or titanium alloy, aluminum or aluminum alloy.
- the first portion or the second portion comprises gold or gold alloy, platinum or platinum alloy, tungsten or tungsten alloy, copper, copper alloy or brass, titanium or alloy titanium, or aluminum or aluminum alloy such as aluminum bronze, or tantalum, hafnium, or iridium and their alloys. This list is not exhaustive.
- the watch component is a balance comprising a rim and at least one arm, and the first portion is the rim and the second portion is the at least one arm.
- the first portion is made of gold or gold alloy
- the second portion is made of copper, copper alloy, or brass.
- the first portion or the second portion comprises gold or gold alloy, platinum or platinum alloy, tungsten or tungsten alloy, copper, copper alloy or brass, titanium or alloy titanium, or aluminum or aluminum alloy such as aluminum bronze, or tantalum, hafnium, or iridium and their alloys. This list is not exhaustive.
- the invention relates to a monolithic watch or jeweler component comprising:
- a second portion having a second hardness and formed of a second sintered metal powder, and in which the first hardness is greater than the second hardness, preferentially higher by 20%, very preferentially higher by 50%.
- the density is linked to the base material (i.e the powder before sintering) as well as to the compactness of the grains of the powder once the powder has been sintered, the powder possibly being compacted and/or densified before sintering.
- the density is linked to the material used itself, that is to say by having a component free of porosity (or substantially free of porosity). In other words, in this case, there is no more free space between the powder grains once the powders have been sintered.
- the first hardness is greater than the second hardness, preferably greater than 50%, very preferably 100%.
- the first hardness is between 200HV and 1500HV.
- the second hardness is between 70HV and 250HV.
- the first portion is made of tungsten or tungsten alloy, gold or gold alloy, or steel
- - the second portion is made of copper or copper alloy.
- the first portion or the second portion is made of aluminum or aluminum alloy.
- the timepiece component is a bridge
- the first portion is a pivoting portion
- the second portion is an attachment portion.
- Pivoting portion is understood to mean a portion arranged to receive a pivot or a bearing, for example.
- the pivoting portion can receive for example a shaft end or a bearing, via a ruby or not. This improves the tribological behavior of the first portion.
- the invention relates to a monolithic watch or jeweler component comprising:
- the first Young's modulus is greater than the second Young's modulus by 20%, preferably greater than 50%, very preferably greater than 100%.
- the watch component is a middle part comprising at least one horn, said first portion being located at said horn, and the first portion is covered by the second portion, and preferably the first portion is made of steel. (Young's modulus between 200 and 230 GPa depending on the alloy grades) and the second portion is in bronze, copper or copper alloy (Young's modulus between 90 and 130 GPa depending on the alloy grades ). It is also possible to provide the second portion in yellow gold and the first portion in white gold (harder) as reinforcement.
- the first portion has a threaded or pin-shaped zone.
- the invention relates to a process for manufacturing the monolithic watch or jewelery component according to one of the preceding aspects, comprising the following steps:
- the depositing step consists in depositing the first metallic powder and/or the second metallic powder in, on or within a sintering tool.
- the sintering tool comprises a support or a sintering mold.
- the sintering operation further comprises the application of an electric current to the first metallic powder and/or to the second metallic powder.
- the sintering is carried out using flash sintering, or “spark plasma sintering (SPS)”. It is also possible to perform hot pressing.
- the depositing step consists in depositing the first metallic powder and/or the second metallic powder using a sintering tool.
- the sintering tool is a multi-metallic 3D printing machine.
- the multi-metallic 3D printing machine is arranged to allow direct printing by deposition of metallic powder and heat input. Heat can be supplied by laser.
- the 3D printing machine implements manufacturing by stereolithography or by binder jetting on a metal powder (metal binder jetting in English).
- the manufacturing process comprises a preliminary step consisting of:
- the manufacturing process comprises a step consisting in:
- the debinding is carried out by chemical attack, or by degradation and/or evaporation (burning).
- the first metallic powder and the second metallic powder are sintered simultaneously.
- the first metal powder has a physical property, such as a mechanical strength, different from the second metal powder.
- FIG. 1 shows an oscillating mass according to a first embodiment of a watch component, perspective view,
- FIG. 3 shows an oscillating system comprising a hairspring and a balance wheel according to a second embodiment of the watch component, seen in perspective,
- FIG. 4 shows a caseband according to a third embodiment
- FIG. 5 shows a watch movement with the oscillating mass, the balance and a bridge according to a fourth embodiment
- Figure 1 shows an oscillating mass 100 according to a first embodiment of a timepiece component, perspective view.
- the oscillating mass 100 comprises a hub 110 arranged to wind a spring via a wheel of an automatic winding system.
- the monolithic watch component here is the oscillating weight 100.
- the oscillating weight 100 further comprises a main branch (or arm, or main arm) 131 and two auxiliary branches (or auxiliary arms) 130, optional, connecting the hub 110 to a segment 120 (or segment portion 120) of the oscillating weight 100.
- the branches auxiliaries 130 are separated from the main branch 131 by recesses 132, on either side of the main branch 131.
- the main branch 131 can include a logo 140 produced by engraving or any other means.
- the segment 120 can include an inscription 141, such as for example a reference, a legal notice or the brand of the watch as shown in Figure 1.
- the inscription 141 can be made by engraving for example or any other means.
- the oscillating weight 100 may comprise a main flat surface 133, and the logo 140 and the inscription 141 can be made on any part of the oscillating weight 100, in particular on any part of the main flat surface 133.
- the segment 120 includes a chamfer 122 between the main flat surface 133 and a side face 121 of the oscillating mass 100.
- Figure 2 shows the oscillating weight 100 in a perspective view of the side opposite to that of Figure 1.
- the hub 110 comprises a track 111 and a centering portion 112 in order to cooperate with the automatic winding system, in particular with a ball bearing fitted with a toothed crown, allowing the mounting of the oscillating weight 100 on the movement and the transmission of the movements of the oscillating mass 100 to the gear trains of the automatic winding system.
- the segment 120 comprises a protrusion 123 and a recess 124, set back from the protrusion 123.
- the protrusion 123 is a distal portion of the oscillating mass 100.
- a first portion of the oscillating weight 100 is the segment 120 (or segment portion) and a second portion is the main arm 131 arranged between the hub 110 and the segment 120.
- the segment 120 is made of gold or gold alloy, platinum or platinum alloy, tungsten or tungsten alloy, and the main arm 131 is made of copper, copper alloy or brass, titanium or titanium alloy, aluminum or aluminum alloy.
- the auxiliary arms 130 are preferably made of the same material as the main arm 131, but can also be made of another material.
- the density of gold depends on its purity. We can consider that the density of 24 carat gold is 19.3; that of 22 carat gold is 17.7; that of 18 carat gold is 16.5; that of 14 carat gold is 14.5; that of 9 carat gold is 11.5. In addition, we can consider that the density of silver called "999" is 10.5; that of silver called “925” is 10.4; that of platinum 21.5; that of palladium of 12.0; that of copper 8.9; that of tungsten of 18.5; that of brass 8.7; that of aluminum of 2.7; that of titanium of 4.5. For the record and comparison, the density of water is 1. The numerical value of the density is equal to the numerical value of the density: thus, for example, water has a density of 1, in other words a density of 1 g/cm3.
- the segment 120 is thus formed from a first sintered metal powder and the main arm 131 is formed from a second sintered metal powder.
- the auxiliary arms 130 are preferably formed from the second sintered powder.
- the materials of the powders are preferably selected from the materials listed above, without being limited thereto.
- the hub 110 can be made of any material, that is to say preferably the same material as the main arm 131, with the same sintered powder.
- the hub 110 can be made of another material, such as that of the segment 120 for example.
- the segment is made of 18 carat gold or more, and the main arm 131 is made of a copper alloy, for example brass.
- the watch component here the oscillating mass 100, but this applies to all watch components, in particular those mentioned above and below
- a binder in particular a polymer binder
- thermoplastics for example polyethylene, polypropylene
- plasticizers for example paraffin, polyethylene glycol
- wetting agents for example stearic acid
- This mixture also called “feedstock”
- feedstock can be extruded in an injection press to obtain a so-called “green” component.
- the so-called “green” component then undergoes debinding, for example by chemical or thermal action, in order to obtain a so-called “brown” component.
- the “brown” part is then sintered, that is to say heated, generally to a value close to the melting point, so as to obtain a so-called “grey” part, or final part.
- the final part can however undergo a final finishing step, such as for example polishing, surface treatment or engraving.
- a final finishing step such as for example polishing, surface treatment or engraving.
- FIG. 3 represents an oscillating system comprising a hairspring 10 and a balance wheel 12 according to a second embodiment of the timepiece component, seen in perspective.
- the monolithic timepiece component is the balance 12, as illustrated in Figure 3.
- the oscillating system 1 also called a resonator, comprises a balance-spring system 2 with the balance 12 coupled to the balance spring 10, associated with an escapement 4.
- the balance-spring system 2 is mounted on a balance bridge 6, intended to be itself assembled to the plate of the watch movement.
- the assembly of the plate and the bridges of the watch movement constitute the frame of the movement, as illustrated in figure 5.
- the internal end of the spiral spring 10 is here integral with the balance 12 while its external end 14 is fixed to a stud carried by a stud carrier 18, intended to be secured to the frame.
- the oscillations of the balance wheel 12 make it possible to actuate an anchor 20, the latter cooperating with the toothing of an escape wheel 22 of an escape wheel set, in a conventional manner.
- the first portion of the watch component is a balance rim or rim 11 and the second portion is at least one arm 13 (here two arms 13).
- the rim 11 can be equipped with screws 15 (or weights or pawns) in order to adjust its inertia, to adjust the balance of the balance 12 or the regularity of the balance-spring system 2.
- the serge 11 is made of gold or gold alloy, and the arms 13 are made of copper, copper alloy, or brass.
- the serge 11 has a first density and is formed from a first metal powder (here gold or a gold alloy) and the arms 13 have a second density and are formed by a second metal powder (here copper, a copper alloy, or brass).
- Figure 4 shows a caseband according to a third embodiment.
- the timepiece component is a middle part 1001 .
- a watch case 1000 includes middle part 1001 and is closed by a bezel and a back not shown, in a conventional manner.
- the caseband 1001 further comprises at least one horn, here four horns 1002.
- the horns 1002 each comprise a housing 1003 intended to receive one end of a bar, so as to fix a watch strap to the caseband 1001 .
- the middle part 1001 further comprises a crown housing 1004 in order to receive a crown stem 1009, represented in FIG. 5, and allowing for example the setting of the time.
- the caseband 1001 further comprises two threads 1005 arranged to receive the fixing screws of the crown guard 1006.
- the horn 1002 comprises a first portion 1007 underlying a second portion 1008 covering it.
- the first portion 1007 has a first Young's modulus and is formed from a first sintered metal powder.
- the second portion has a second Young's modulus and is formed of a second sintered metal powder, and the first Young's modulus is greater than the second Young's modulus.
- the first portion 1007 is preferably made of steel and the second portion is preferably made of bronze, copper or copper alloy.
- the first portion 1007 provides stiffening of the horn 1002 while making it possible to have a material covering it with greater aesthetics, better allergic or maintenance characteristics.
- an underlying material for the crown guard 1006 as a first portion, with a second portion covering it, so for example as to highlight an inscription in a predetermined zone 1006i of the crown guard 1006.
- the inscription can be REG. for a first predetermined zone and TM. for a second predetermined area, meaning registered mark.
- FIG. 5 represents a watch movement 200 with the oscillating weight 100, the balance wheel 12 and a bridge according to a fourth embodiment.
- the watch movement 200 is equipped with the oscillating weight 100 as presented above, in connection with Figures 1 and 2.
- the watch movement 200 is equipped with the oscillating system 1, with the balance wheel 12 and the hairspring 10, in a variant vis-à-vis the description above in connection with Figure 3.
- the watch movement 200 is intended to be cased in a casing of the caseband 1001, as presented above, in connection with Figure 4.
- the bridge for example the balance bridge 6, is fixed to the plate 202 of the movement 200 using fixing screws 7, at an attachment portion (also called the second portion) of the bridge balance 6.
- the balance bridge 6 comprises a pivoting portion (also called first portion) arranged to receive a ruby 9 of an anti-shock system for example.
- Ruby 9 is arranged to receive one end of a balance shaft 8 attached to balance wheel 12.
- Ruby 9 is also called a clockwork stone.
- the movement 200 may include another bridge 201 in order to allow the fixing and pivoting of other parts of the movement 200, and thus act as a barrel bridge, a center wheel bridge, a bridge return, or even a bridge called a 3/4 plate bridge (typically covering 3/4 of the plate 202).
- the other bridge 201 further comprises another first portion, also called pivoting portion 208, arranged to receive a jewel 203.
- the other bridge 201 can comprise several pivoting portions 208 to receive several jewels 203, as illustrated in Figure 5.
- the other bridge 201 comprises another second portion, also called the attachment portion, fixed to the plate 202 by fixing screws 207.
- the balance bridge 6 is formed of two sintered metal powders distributed by portion. It is the same for the other bridge 201.
- the pivoting portion is made of a hard metal, such as steel, and the attachment portion is made of brass.
- the balance bridge 6 (or the other bridge 201 ) is mainly made of brass, with the pivoting portion of hard metal, such as steel or cobalt-based or nickel-based superalloy.
- balance shaft 8 With the main portion of the balance shaft 8 made of titanium and with the ends forming a friction zone made of steel.
- the ends of balance shaft 8 thus form the first portion and the main portion of balance shaft 8 thus forms the second portion.
- Titanium improves magnetic properties and steel improves friction properties (or tribological properties). This makes it possible to retain the performance in terms of friction as a conventional balance shaft is entirely made of steel, and to use the monolithic component (here balance shaft 8) in a usual movement while improving the magnetic performance.
- a titanium portion and a steel portion as a zone receiving a bearing.
- Figure 6 shows the bridge in perspective view.
- FIG. 6 shows the bridge (here the other bridge 201) in perspective view.
- the other bridge 201 comprises, as indicated above, the attachment portion 209 and the pivoting portion 208.
- the other bridge 201 can comprise a housing receiving a transmission system 150 allowing the transfer of energy mechanism of the oscillating mass 100 to the mainspring of the movement 200.
- the first metal powder and the second metal powder do not have the same magnetic characteristics.
- a watch component comprising a first portion forming micromagnets embedded in a second non-magnetic portion. This makes it possible in particular to improve the protection against corrosion of the first portion and/or to improve the compactness (saving of space).
- the timepiece component can be a micro rotor; or even a component allowing a position indication by means of micro-magnets.
- metal powders for example three metal powders, four metal powders, five metal powders, without being limited thereto.
- this makes it possible to predict gradients of materials (i.e. with a gradual evolution of the modified physical characteristic), so as in particular to reduce the stresses in particular at the level of the transitions.
- this also makes it possible to improve sintering with a buffer powder in the event of incompatibility or less compatibility of sintering between two powders.
- the metals or metal alloys can be in a crystalline structure or in an amorphous structure, otherwise called metallic glasses.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH070483/2021A CH719106A1 (fr) | 2021-11-02 | 2021-11-02 | Composant horloger ou joaillier monolithique multi-métallique réalisé par frittage. |
| PCT/EP2022/079339 WO2023078694A1 (fr) | 2021-11-02 | 2022-10-21 | Composant horloger monolithique réalisé en impression multi-métallique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4427100A1 true EP4427100A1 (fr) | 2024-09-11 |
Family
ID=84191646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22805867.3A Pending EP4427100A1 (fr) | 2021-11-02 | 2022-10-21 | Composant horloger monolithique réalisé en impression multi-métallique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4427100A1 (fr) |
| CH (1) | CH719106A1 (fr) |
| WO (1) | WO2023078694A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH356719A (fr) * | 1959-08-22 | 1961-08-31 | Schild S A Fabrique D Ebauches | Balancier pour pièce d'horlogerie |
| US3942317A (en) * | 1974-12-03 | 1976-03-09 | Ebauches Bettlach S.A. | Component parts for watch movements |
| US9164485B2 (en) * | 2010-08-06 | 2015-10-20 | Damasko Gmbh | Oscillating body, mechanical oscillating system for wristwatches with such an oscillating body and watch with such an oscillating system |
| EP2592498A1 (fr) * | 2011-11-08 | 2013-05-15 | ETA SA Manufacture Horlogère Suisse | Masse oscillante |
| JP2015143673A (ja) * | 2013-12-27 | 2015-08-06 | セイコーインスツル株式会社 | てんぷ、ムーブメント、および時計 |
| CH715022B1 (fr) | 2018-05-24 | 2022-07-15 | Swatch Group Res & Dev Ltd | Composant d'habillage pour l'horlogerie ou la bijouterie en matériau composite et son procédé de fabrication. |
| WO2020148626A1 (fr) * | 2019-01-16 | 2020-07-23 | Patek Philippe Sa Geneve | Procédé de brasage de composants horlogers |
-
2021
- 2021-11-02 CH CH070483/2021A patent/CH719106A1/fr unknown
-
2022
- 2022-10-21 EP EP22805867.3A patent/EP4427100A1/fr active Pending
- 2022-10-21 WO PCT/EP2022/079339 patent/WO2023078694A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CH719106A1 (fr) | 2023-05-15 |
| WO2023078694A1 (fr) | 2023-05-11 |
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