WO2021095605A1 - Wristwatch component, wristwatch, and wristwatch component manufacturing method - Google Patents

Wristwatch component, wristwatch, and wristwatch component manufacturing method Download PDF

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Publication number
WO2021095605A1
WO2021095605A1 PCT/JP2020/041218 JP2020041218W WO2021095605A1 WO 2021095605 A1 WO2021095605 A1 WO 2021095605A1 JP 2020041218 W JP2020041218 W JP 2020041218W WO 2021095605 A1 WO2021095605 A1 WO 2021095605A1
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Prior art keywords
wristwatch
crystal
component
diamond
wristwatch component
Prior art date
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PCT/JP2020/041218
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French (fr)
Japanese (ja)
Inventor
秀太 内海
柴田　進
Original Assignee
アダマンド並木精密宝石株式会社
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Priority to JP2021556039A priority Critical patent/JPWO2021095605A1/ja
Priority to CH000573/2022A priority patent/CH718233B1/en
Publication of WO2021095605A1 publication Critical patent/WO2021095605A1/en

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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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/12—Selection of materials for dials or graduations markings
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
    • C30B25/02—Epitaxial-layer growth
    • C30B25/18—Epitaxial-layer growth characterised by the substrate
    • C30B25/20—Epitaxial-layer growth characterised by the substrate the substrate being of the same materials as the epitaxial layer
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/02—Elements
    • C30B29/04—Diamond
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
    • 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
    • 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
    • G04B17/04—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
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
    • G04B31/008—Jewel bearings
    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/004—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass
    • G04B39/006—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass out of wear resistant material, e.g. sapphire

Definitions

  • the present invention relates to a wristwatch part, a wristwatch, and a method for manufacturing the wristwatch part.
  • the movement parts are skeletonized so that they can be seen from the outside of the wristwatch. It provides decorativeness. Therefore, it is expected that the movement parts will be made of diamond crystals to add a sense of luxury and decoration to the wristwatch.
  • the protective cover which is a protective part for wristwatches, made of diamond crystals (see, for example, Patent Document 2).
  • the exterior parts such as the protective cover (described as protective glass in Patent Document 2) are made of diamond crystals, which adds a sense of luxury and decorativeness to the wristwatch. ..
  • Diamond crystals are resistant to scratches due to their high Mohs hardness.
  • the toughness against impact force is higher in ruby crystals and sapphire crystals among gemstones, and diamond has lower toughness than these, so it is weak against impact force from the outside. Therefore, if the user hits the watch somewhere or accidentally drops it and an impact force is applied from the outside of the watch, the diamond crystal watch parts will be cracked, cracked, or chipped or chipped. May enter.
  • sapphire crystals have already been put into practical use in wristwatches for protective cover applications, etc., but diamond crystals have not been put into practical use in wristwatches as compared to sapphire crystals.
  • diamond crystals are the material with the highest hardness among jewels, it was more difficult to mold precision parts such as movement parts for wristwatches than other jewels. This point was also one of the reasons why diamond crystals have not been put into practical use for wristwatches.
  • the present invention has been made in view of the above problems, and is a wristwatch component (wristwatch component) that is made of diamond crystals, is strong against an impact force from the outside, is easy to mold, and can be decorated.
  • the purpose is to realize a method for manufacturing a wristwatch part and a wristwatch equipped with the wristwatch part.
  • the wristwatch component of the present invention is characterized in that it is made of diamond crystals, and at least a part of the contour is formed of arcs or elliptical arcs arranged at a pitch of 330 ⁇ m or more and 420 ⁇ m or less.
  • the wristwatch of the present invention is characterized by including the wristwatch parts.
  • the shape in the plane direction is a square shape, a circular shape, or a circular shape provided with a diamond surface, and in the case of the square shape, the length of one side is 10.0 mm or more.
  • a circular shape prepare a diamond crystal with a diameter of 0.4 inches or more, punch the diamond crystal with a laser, and arrange arcs or elliptical arcs with a pitch of 330 ⁇ m or more and 420 ⁇ m or less to form at least a part of the contour. Therefore, the watch parts are extracted from the diamond crystal, and the watch parts extracted from the diamond crystals are polished to manufacture the watch parts.
  • At least a part of the contour of the wristwatch component provided on the wristwatch is formed by a plurality of arranged arcs or elliptical arcs, so that at least a part of the contour is formed. Is formed in multiple arches. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if it is made of diamond crystal, it is cracked, cracked, cracked, or chipped. And chipping are prevented.
  • the impact force from the outside of the wristwatch parts can be dispersed in multiple arch shapes, so that the wristwatch parts are further cracked, cracked, cracked, chipped or chipped. Can be prevented.
  • the pitch of the arc or elliptical arc to 330 ⁇ m or more and 420 ⁇ m or less, the existence of the arc or elliptical arc cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser is used as it is as at least a part of the contour of the wristwatch component, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch parts.
  • a wristwatch equipped with a wristwatch component having the above-mentioned effect can be realized.
  • FIG. 1 It is a front view which shows an example of the movement component for a mechanical wristwatch which concerns on embodiment of this invention.
  • (b) It is a right side view of FIG. 1 (a).
  • (a) It is an enlarged view of the circle A part of FIG.
  • (b) It is a perspective view of FIG. 2 (a).
  • (a) It is a partially enlarged view which shows the modified form of FIG. 2 (a).
  • FIG. 3 (a).
  • FIG. 4 It is a perspective view of FIG. 4 (a). It is an enlarged view of the circle B part of FIG. 4A.
  • FIG. 6 (a) It is a partially enlarged view which shows still another modified form of FIG. 2 (a).
  • FIG. 6 (a) It is a perspective view of FIG. 6 (a). It is an enlarged view of the circle C part of FIG. 6A.
  • (a) It is a front view which shows an example of the diamond crystal which becomes the base material of the movement component of FIG. (b) It is a right side view of FIG. 8 (a).
  • (a) It is a front view which shows the modified form of FIG. 8 (a).
  • (b) It is a front view which shows another modified form of FIG. 8 (a).
  • It is a SEM observation image which magnified a part of the outline part of the movement part for a mechanical wristwatch which concerns on embodiment of this invention.
  • It is a SEM observation image which magnified a part of the contour part of the movement part for a mechanical wristwatch which concerns on another embodiment of this invention.
  • the first feature of the present embodiment is a wristwatch component made of diamond crystals, in which at least a part of the contour is formed by an arc or an elliptical arc arranged at a pitch of 330 ⁇ m or more and 420 ⁇ m or less.
  • the second feature of the present embodiment is that the shape in the plane direction is a square shape, a circular shape, or a circular shape provided with an orientation flat surface.
  • the length of one side is 10.0 mm or more, and the circle.
  • prepare a diamond crystal with a diameter of 0.4 inches or more punch the diamond crystal with a laser, and arrange arcs or elliptical arcs with a pitch of 330 ⁇ m or more and 420 ⁇ m or less to form at least a part of the contour.
  • a method of manufacturing a watch part in which a watch part is extracted from a diamond crystal and the watch part extracted from the diamond crystal is polished to manufacture the watch part.
  • At least a part of the contour of the wristwatch component provided in the wristwatch is formed by a plurality of arranged arcs or elliptical arcs, so that at least a part of the contour is formed into a plurality of arches. It is formed. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if it is made of diamond crystal, it is cracked, cracked, cracked, or chipped. And chipping are prevented.
  • the impact force from the outside of the wristwatch parts can be dispersed in multiple arch shapes, so that the wristwatch parts are further cracked, cracked, cracked, chipped or chipped. Can be prevented.
  • the pitch of the arc or elliptical arc By setting the pitch of the arc or elliptical arc to 330 ⁇ m or more and 420 ⁇ m or less, the existence of the arc or elliptical arc cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser is used as it is as at least a part of the contour of the wristwatch component, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch parts.
  • the third feature of the present embodiment is that when the diamond crystal has a rectangular shape in the plane direction, the length of one side is 10.0 mm or more and 203.2 mm or less, or the diamond crystal has a circular shape or an orientation flat surface. In the case of a diamond shape, it is a method for manufacturing a wristwatch component having a diameter of 0.4 inches or more and 8 inches or less.
  • a large diamond crystal can be prepared as a base material for a wristwatch part, so that a large wristwatch part can be manufactured.
  • the diamond crystal refers to any one of a single crystal, a polycrystal, or a crystal having an intermediate structure between a single crystal and a polycrystal.
  • the fourth feature of this embodiment is a wristwatch component having a thickness of 0.3 mm or more and 3.0 mm or less.
  • the fifth feature of the present embodiment is a method for manufacturing a wristwatch component having a thickness of the wristwatch component of 0.3 mm or more and 3.0 mm or less.
  • the self-supporting wristwatch component in the present invention refers to a wristwatch component that not only retains its own shape but also has strength to the extent that handling is not inconvenient. From the viewpoint of having such strength, ensuring rigidity, and preventing the occurrence of cracks, tears, or cracks, the thickness is preferably 0.3 mm or more.
  • the upper limit of the thickness of a self-supporting wristwatch component is preferably 3.0 mm or less, considering the ease of molding when forming the wristwatch component.
  • the sixth feature of this embodiment is a wristwatch component having a surface roughness Ra of 0.1 ⁇ m or less.
  • the seventh feature of this embodiment is a method for manufacturing a wristwatch component having a surface roughness Ra of the wristwatch component of 0.1 ⁇ m or less.
  • the eighth feature of this embodiment is a wristwatch component that does not have any crystal boundaries, black spots, crystal defects, or processed alterations.
  • the ninth feature of the present embodiment is to prepare a diamond crystal having no crystal boundary, black spot, crystal defect, or processed alteration part, or to prepare any of the crystal boundary, black spot, crystal defect, and processed alteration portion. This is a method for manufacturing watch parts, in which watch parts are extracted from the diamond crystal parts that do not exist.
  • the formed wristwatch parts do not have crystal boundaries, black spots, crystal defects, and processed alteration parts, so that the aesthetic appearance of the wristwatch parts is improved.
  • crystal defects refer to twins, dislocations, and strains.
  • the tenth feature of this embodiment is a wristwatch component having a crystal plane of (100) in the plane direction.
  • the eleventh feature of the present embodiment is a method for manufacturing a wristwatch component in which the crystal plane in the plane direction of the diamond crystal is (100).
  • the twelfth feature of the present embodiment is a wristwatch equipped with any of the above-mentioned wristwatch parts.
  • FIGS. 1 to 9 a wristwatch component according to an embodiment of the present invention, a manufacturing method thereof, and a wristwatch provided with the wristwatch component will be described with reference to FIGS. 1 to 9.
  • the wristwatch parts according to the present invention include a protective cover which is a dial protection part and a movement part for a mechanical wristwatch. Movement parts also include tourbillon parts for complex complications. Specific watch parts include movement parts for tourbillon, bearings, anchors, hairsprings, balance springs, bottom plates, bridges, levers ( Examples include levers, wheels, pallet assemblies, plates, and dials.
  • FIG. 1 shows an upper deck part of a cage as an example of the present embodiment.
  • the wristwatch component 1 of the present embodiment is made of a diamond crystal, and all or at least a part of its contour is formed of an arranged arc or elliptical arc.
  • a partially enlarged view of a part of the contour (circle A part) in FIG. 1 is shown in FIG. Note that the hatching in FIGS. 2 to 7 represents the surface appearing in the appearance of the wristwatch component 1, not the cross section.
  • Examples of diamond crystals forming wristwatch parts include single crystals, polycrystals, and crystals having an intermediate structure between them. However, single crystals are most preferable because they have high transparency and do not impair the aesthetics, luxury, and decorativeness of wristwatch parts.
  • the diamond crystal forming the wristwatch component 1 does not have any crystal boundaries, black spots, crystal defects such as dislocations, twins and strains, chipping, cracks, cracks, cracks, chips, and processed alterations. To do. Since the formed wristwatch component 1 does not have crystal boundaries, black spots, crystal defects, and processed alterations, the aesthetic appearance of the wristwatch component 1 is improved.
  • the processing alteration part is a crystal portion in which atoms are disturbed by machining on the main surface of a diamond crystal subjected to mechanical polishing and a thickness portion in the vicinity thereof, and is a alteration portion of the crystal including dislocations.
  • the presence or absence of a processed alteration part or the like may be measured by, for example, a synchrotron X-ray topography method.
  • CMP Chemical Mechanical Polishing
  • the diamond crystal forming the wristwatch component 1 may be a colored diamond.
  • the crystal plane 4 in the surface direction of the wristwatch component 1 is (100), which is also the finished surface of the wristwatch component 1.
  • the plane orientation of the crystal plane 4 may be any of (111), (110), and (100), and is not limited to these plane orientations.
  • the diamond substrate for forming a semiconductor element or a semiconductor device can be diverted, and the productivity of the diamond crystal used as the base material of the wristwatch component 1 can be improved.
  • the surface roughness Ra appearing on the appearance of the wristwatch component 1 including the crystal plane 4 shall be 0.1 ⁇ m or less.
  • Ra 0.1 ⁇ m or less
  • mirror polishing by CMP is performed.
  • Ra may be measured with a surface roughness measuring machine.
  • the pitch P1 set along the contour represents the distance between the same points of the arcs 2 and 2 adjacent to each other.
  • the diameter of the arc 2 is about 330 ⁇ m or more and 420 ⁇ m.
  • a plurality of arcs 2 are arranged along the contour to form at least a part of the contour of the wristwatch component 1.
  • the pitch P1 between the arcs 2 is 330 ⁇ m or more and 420 ⁇ m or less.
  • the arc forming the contour of the wristwatch component 1 may be changed to an elliptical arc 3 as shown in FIG.
  • the pitch P2 set along the contour represents the distance between the same points of the elliptical arcs 3 and 3 adjacent to each other.
  • the major axis of the elliptical arc 3 is about 330 ⁇ m or more and 420 ⁇ m, and the minor axis is about 280 ⁇ m or more and 300 ⁇ m or less.
  • a plurality of elliptical arcs 3 are arranged along the contour to form at least a part of the contour of the wristwatch component 1.
  • the pitch P2 between the elliptical arcs 3 is 330 ⁇ m or more and 420 ⁇ m or less.
  • At least a part of the contour of the wristwatch component 1 provided on the wristwatch is formed by a plurality of arches. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if the wristwatch part 1 is made of diamond crystal, it will crack or crack. Cracks, chipping and chipping are prevented.
  • the individual arcs 2 and elliptical arcs 3 are subjected to a compressive force from the inside of the diamond crystal constituting the wristwatch component 1, they are resistant to an impact force applied from the outside of the wristwatch component 1. Therefore, in this respect as well, cracks, cracks, cracks, chipping and chipping are prevented.
  • the impact force can be dispersed in a plurality of arch shapes. Therefore, it is possible to further prevent the occurrence of cracks, cracks, cracks, chippings and chips in the wristwatch component 1.
  • the contours where the arcs 2 or elliptical arcs 3 are arranged are those that lack strength and toughness against external impact forces, such as the contours of relatively thin parts of wristwatch parts and the contours formed at acute angles.
  • the pitch P1 or P2 within the range of 330 ⁇ m or more and 420 ⁇ m or less, the existence of the arc 2 and the elliptical arc 3 cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser described later is used as it is as at least a part of the contour of the wristwatch component 1, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch component 1.
  • the thickness t of the wristwatch component 1 can be set arbitrarily, but by setting it to 0.3 mm or more and 3.0 mm or less, it is possible to form a self-supporting wristwatch component even though it is made of diamond crystals.
  • the self-supporting wristwatch component refers to a wristwatch component that not only retains its own shape but also has strength to the extent that handling is not inconvenient.
  • the thickness t is preferably 0.3 mm or more from the viewpoint of having such strength, ensuring rigidity, and preventing cracks, tears, or cracks from occurring.
  • the upper limit of the thickness t of a self-supporting wristwatch component is preferably 3.0 mm or less, considering the ease of molding when forming the wristwatch component. Therefore, the thickness t of the wristwatch component 1 is set within the range of 0.3 mm or more and 3.0 mm or less.
  • the wristwatch part 1 manufactured from diamond crystals as described above is provided in the wristwatch. According to this wristwatch, a wristwatch including the wristwatch component 1 having the above effect can be realized.
  • a wristwatch including the wristwatch component 1 having the above effect can be realized.
  • by making the structure of the wristwatch visible from the outside of the wristwatch it is possible to add aesthetics, luxury, and decorativeness to the user of the wristwatch. Therefore, by making the movement parts made of diamond crystals, it is possible to add a sense of luxury and decorativeness to the wristwatch.
  • the protective cover which is a visible exterior part, is made of diamond crystals, which makes it possible to add a sense of luxury and decoration to the wristwatch. Further, even if the exterior product is made of diamond, by using the exterior product as a wristwatch component according to the present invention, it is strong against an impact force from the outside of the wristwatch and can prevent cracks, cracks, cracks, chipping and chipping. .. Therefore, it is expected that the practical application of diamond crystals to wristwatch applications will be promoted.
  • the diamond crystal of FIG. 8 serves as a base material for the wristwatch component 1, and its external shape is a plate shape.
  • the shape of the diamond crystal in the plane direction is a square shape as shown in FIG. 8, a circular shape as shown in FIG. 9 (a), or a circle provided with an orientation flat surface as shown in FIG. 9 (b). Any shape may be used. Examples of the square shape include a square and a rectangle.
  • the diamond crystal substrate for semiconductors can be directly used as the base material of the wristwatch component 1, and the productivity of the wristwatch component 1 is improved. Can be made to.
  • a diamond crystal with a side length L of 10.0 mm or more and 203.2 mm or less in the case of a square shape, and a diameter ⁇ of 0.4 inches or more and 8 inches or less in the case of a circular shape.
  • the length of the short side is set to at least 10.0 mm and less than the long side, and the upper limit of the long side is set to 203.2 mm.
  • the thickness T of the diamond crystal is a desired value obtained by adding the polishing allowance to the thickness t of the wristwatch component 1.
  • a method for producing a diamond crystal a method of homoepitaxially growing a diamond crystal using a diamond crystal substrate as a base substrate can be mentioned.
  • Another example is a manufacturing method in which a sapphire substrate or a magnesium oxide (MgO) substrate is used as a base substrate and diamond crystals are formed on the base substrate by a heteroepitaxial growth method.
  • the growth method include a pulsed laser deposition (PLD) method, a chemical vapor deposition (CVD) method, and a vapor phase growth method such as microwave plasma CVD.
  • PLD pulsed laser deposition
  • CVD chemical vapor deposition
  • a vapor phase growth method such as microwave plasma CVD.
  • the method described in International Publication No. WO2015 / 046294 (a method of producing a diamond single crystal by arranging a core of a diamond single crystal at the tip of a diamond pillar and then coalescence) may be used.
  • the prepared diamond crystal is punched by continuous irradiation of a laser to arrange the arc 2 or the elliptical arc 3 to form at least a part of the contour, and the wristwatch component 1 is extracted from the diamond crystal.
  • a diamond crystal having no crystal boundary, black spot, crystal defect, or processing alteration part is prepared in advance, or a diamond crystal having no crystal boundary, black spot, crystal defect, or processing alteration part is prepared. Is selected, and the laser is irradiated so as to extract the wristwatch component 1 from the portion.
  • the laser When extracting the wristwatch component 1 with a laser, the laser is irradiated at regular time intervals, and the diamond crystal is also slid along the contour shape of the wristwatch component 1 at regular intervals in synchronization with the laser irradiation interval by the stage.
  • the fine arcs or elliptical arcs are arranged along the contour and are continuously formed at intervals (pitch P1 or P2). More specifically, the drawing data is read into CAD / CAE, and the laser is irradiated along the contour line of the wristwatch component 1 of the drawing data.
  • the arcs 2 or the elliptical arcs 3 may be arranged and continuously formed at the above intervals.
  • all or at least a part of the contour of the wristwatch component 1 is formed only by forming the arc 2 or the elliptical arc 3, and the wristwatch component is extracted from the diamond crystal in a desired shape. Set the punching interval so that there is no gap in. Therefore, the arc 2 or the elliptical arc 3 may partially overlap each other.
  • the pitch (P1 or P2) is less than 330 ⁇ m, the bitch is too small and the number of laser shots is excessive, which reduces the mass productivity of the wristwatch component 1, which is not preferable.
  • the pitch exceeds 420 ⁇ m, each arc 2 or each elliptical arc 3 is formed individually but not connected, and there is a possibility that the wristwatch component cannot be extracted from the diamond crystal, which is also not preferable.
  • the crystal plane in the plane direction of the diamond crystal which is the base material of the wristwatch component 1 is the crystal plane 4 of the wristwatch component 1, so (100) is the most preferable.
  • the laser emission conditions according to this embodiment are as follows.
  • the wavelength is more preferably a short wavelength in which the absorption of the diamond crystal is high and the heat effect is suppressed.
  • Examples of lasers satisfying such characteristics include Nd: YAG lasers, which have a wavelength of 532 nm or 355 nm and an output of several hundred mW to several watts.
  • the wristwatch part 1 extracted from the diamond crystal is then subjected to mechanical polishing and mirror polishing by CMP to complete the production of the wristwatch part 1.
  • the thickness t of the wristwatch component 1 after mirror polishing shall be 0.3 mm or more and 3.0 mm or less.
  • the surface roughness Ra appearing on the appearance including the crystal plane 4 of the wristwatch component 1 after mirror polishing shall be 0.1 ⁇ m or less.
  • the tip of the convex portion 2a formed between the arcs 2 is polished with a flat surface polishing machine or the like, and the tip is flattened by the convex portion 2b or rounded as shown in FIGS. 4 and 5 or 6 and 7. Mold into the convex part 2c. By doing so, cracks, cracks, chipping and chipping of the tip when an impact force is applied from the outside of the wristwatch component 1 are prevented. Further, the tip of the convex portion 3a formed between the elliptical arcs 3 may be similarly polished.
  • each diamond single crystal flat plate As a base material for movement parts for mechanical watches, two colorless diamond single crystal flat plates with a square shape of 10 mm square and a thickness of 0.6 mm in the plane direction, and heteroepitaxial growth using microwave plasma CVD were used. Prepared by law. The plane orientation of the main surface of each diamond single crystal flat plate was set to (100). Furthermore, it was confirmed that each diamond single crystal flat plate had no crystal boundaries, black spots, crystal defects such as dislocations, twins and strains, chipping, cracks, cracks, cracks, chips, and processing alterations. ..
  • the diamond single crystal flat plate is continuously irradiated with a laser and punched, and the arcs are arranged so as to overlap each other to form the contour of the wristwatch component.
  • the wristwatch component 1 having the outer shape shown in FIG. It was extracted from the crystal plate.
  • the laser used was an Nd: YAG laser, with a wavelength of 355 nm and an output of several watts.
  • the watch component 1 extracted from the diamond single crystal flat plate was then subjected to mechanical polishing and mirror polishing by CMP to obtain a thickness t of the watch component 1 of 0.5 mm and a surface roughness Ra of 0.1 ⁇ m.
  • FIG. 10 shows an SEM (Scanning Electron Microscope) observation image in which a part of the contour portion of the movement component for a mechanical watch according to this embodiment is enlarged.
  • FIG. 11 shows an enlarged SEM observation image of a part of the contour portion of the movement component according to another embodiment.
  • the gray portion indicates the wristwatch component 1
  • the black portion indicates the space. From FIGS. 10 and 11, it was confirmed that the contour of the wristwatch component 1 was formed by a plurality of arcs in which the wristwatch component 1 was continuously arranged. The pitch between the arcs was about 357 ⁇ m in both FIGS. 10 and 11.

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Abstract

[Problem] To provide: a component (wristwatch component) for a wristwatch that, while being made from diamond crystal, is strong against external impact force, can be easily shaped, and can add decorativeness; a method for manufacturing the wristwatch component; and a wristwatch comprising the wristwatch component. [Solution] A diamond crystal is prepared that has a planar direction shape that is a square shape, a circular shape, or a circular shape with an orientation flat surface. If the diamond crystal has a square shape, the length of a side thereof is at least 10.0 mm, and if the diamond crystal has a circular shape, the diameter thereof is at least 0.4 in. A wristwatch component is extracted from the diamond crystal through laser punching of the diamond crystal such that at least a portion of the outline thereof is formed so as to have arcs or elliptical arcs arranged at a pitch of 330 to 420 μm. The manufacturing of the wristwatch component also includes polishing of the wristwatch component extracted from the diamond crystal. A wristwatch is configured so as to comprise the wristwatch component.

Description

腕時計部品、腕時計、及び腕時計部品の製造方法Watch parts, watches, and how to manufacture watch parts
　本発明は、腕時計部品、腕時計、及び腕時計部品の製造方法に関する。 The present invention relates to a wristwatch part, a wristwatch, and a method for manufacturing the wristwatch part.
　腕時計（特に機械式腕時計）用のムーブメント部品を、ダイヤモンド結晶製とする特許が出願されている（例えば、特許文献１参照）。 A patent has been filed for making movement parts for wristwatches (particularly mechanical wristwatches) made of diamond crystals (see, for example, Patent Document 1).
　トゥールビヨンに代表される機械式の腕時計では、特にムーブメント部品を腕時計の外部から目視可能な構造（スケルトン化）とする事で、腕時計の使用者にムーブメント部品の見た目の楽しさと、高級感、及び装飾性を提供している。従って、ムーブメント部品をダイヤモンド結晶製とする事で、腕時計により一層の高級感と装飾性を加える事が期待されている。 In mechanical wristwatches such as the tourbillon, the movement parts are skeletonized so that they can be seen from the outside of the wristwatch. It provides decorativeness. Therefore, it is expected that the movement parts will be made of diamond crystals to add a sense of luxury and decoration to the wristwatch.
　またムーブメント部品以外として、腕時計の保護用部品である保護カバーをダイヤモンド結晶製とする特許も出願されている（例えば、特許文献２参照）。この様にムーブメント部品だけでなく、保護カバー（特許文献２では、保護ガラスと記載）と云った外装品をダイヤモンド結晶製とする事で、腕時計に更なる高級感と装飾性を付加している。 In addition to the movement parts, a patent has also been applied for the protective cover, which is a protective part for wristwatches, made of diamond crystals (see, for example, Patent Document 2). In this way, not only the movement parts but also the exterior parts such as the protective cover (described as protective glass in Patent Document 2) are made of diamond crystals, which adds a sense of luxury and decorativeness to the wristwatch. ..
欧州特許第２０３７３３５号明細書European Patent No. 2037335 特開２０１２－１５００９９号公報Japanese Unexamined Patent Publication No. 2012-150099
　ダイヤモンド結晶はモース硬度が高い為にひっかき傷に強い。しかし衝撃力に対する靱性は、宝石の中ではルビー結晶やサファイア結晶の方が高く、これらに比べるとダイヤモンドは靭性が低い為、外部からの衝撃力には弱い。従って使用者が腕時計を何処かにぶつけたり、誤って落としたりして、腕時計の外部から衝撃力が加わると、ダイヤモンド結晶製の腕時計用部品には、ひびや割れ、又はチッピング（chipping）や欠けが入ってしまうおそれがある。 Diamond crystals are resistant to scratches due to their high Mohs hardness. However, the toughness against impact force is higher in ruby crystals and sapphire crystals among gemstones, and diamond has lower toughness than these, so it is weak against impact force from the outside. Therefore, if the user hits the watch somewhere or accidentally drops it and an impact force is applied from the outside of the watch, the diamond crystal watch parts will be cracked, cracked, or chipped or chipped. May enter.
　この様な懸念から、例えばサファイア結晶は、保護カバー用途等で既に腕時計用途で実用化されているものの、ダイヤモンド結晶の腕時計用途への実用化はサファイア結晶等に比べると進んでいない。 Due to such concerns, for example, sapphire crystals have already been put into practical use in wristwatches for protective cover applications, etc., but diamond crystals have not been put into practical use in wristwatches as compared to sapphire crystals.
　更にダイヤモンド結晶は宝石の中で最高硬度を有する材料なので、腕時計用のムーブメント部品と云った精密部品の成形加工は、他の宝石に比べて困難であった。この点も、ダイヤモンド結晶の腕時計用途への実用化が進んでいない一因であった。 Furthermore, since diamond crystals are the material with the highest hardness among jewels, it was more difficult to mold precision parts such as movement parts for wristwatches than other jewels. This point was also one of the reasons why diamond crystals have not been put into practical use for wristwatches.
　本発明は前記課題に鑑みてなされたものであり、ダイヤモンド結晶製でありながら外部からの衝撃力に強く、成形加工が容易で、装飾性が付加できる腕時計用の部品（腕時計部品）と、その腕時計部品の製造方法、及びその腕時計部品を備えた腕時計の実現を目的とする。 The present invention has been made in view of the above problems, and is a wristwatch component (wristwatch component) that is made of diamond crystals, is strong against an impact force from the outside, is easy to mold, and can be decorated. The purpose is to realize a method for manufacturing a wristwatch part and a wristwatch equipped with the wristwatch part.
　前記課題は、以下の本発明により達成される。即ち、本発明の腕時計部品は、ダイヤモンド結晶から成り、輪郭の少なくとも一部が、ピッチ330μｍ以上420μｍ以下で配列された円弧又は楕円弧で形成されている事を特徴とする。 The above object is achieved by the following invention. That is, the wristwatch component of the present invention is characterized in that it is made of diamond crystals, and at least a part of the contour is formed of arcs or elliptical arcs arranged at a pitch of 330 μm or more and 420 μm or less.
　また、本発明の腕時計は、前記腕時計部品を備えた事を特徴とする。 Further, the wristwatch of the present invention is characterized by including the wristwatch parts.
　また、本発明の腕時計部品の製造方法は、平面方向の形状が方形状、円形状、又はオリフラ面が設けられた円形状であり、方形状の場合は１辺の長さが10.0ｍｍ以上、円形状の場合は直径が0.4インチ以上であるダイヤモンド結晶を用意し、ダイヤモンド結晶にレーザによる打ち抜き加工を施して、ピッチ330μｍ以上420μｍ以下で円弧又は楕円弧を配列させて輪郭の少なくとも一部を形成して、腕時計部品をダイヤモンド結晶から抜き出し、ダイヤモンド結晶から抜き出した腕時計部品に研磨を施して、腕時計部品を製造する事を特徴とする。 Further, in the method for manufacturing a wristwatch component of the present invention, the shape in the plane direction is a square shape, a circular shape, or a circular shape provided with a diamond surface, and in the case of the square shape, the length of one side is 10.0 mm or more. In the case of a circular shape, prepare a diamond crystal with a diameter of 0.4 inches or more, punch the diamond crystal with a laser, and arrange arcs or elliptical arcs with a pitch of 330 μm or more and 420 μm or less to form at least a part of the contour. Therefore, the watch parts are extracted from the diamond crystal, and the watch parts extracted from the diamond crystals are polished to manufacture the watch parts.
　本発明に係る腕時計部品及び腕時計部品の製造方法に依れば、腕時計に備えられる腕時計部品の輪郭の少なくとも一部を、配列された複数の円弧又は楕円弧で形成する事で、輪郭の少なくとも一部が複数のアーチ形で形成される。アーチ形は角部や折れ曲がり部が無い為、腕時計の外部から衝撃力が加わっても、衝撃力が分散され一点に集中しない為、ダイヤモンド結晶製であっても、ひびや割れ、クラック、又はチッピングや欠けが防止される。 According to the wristwatch component and the method for manufacturing a wristwatch component according to the present invention, at least a part of the contour of the wristwatch component provided on the wristwatch is formed by a plurality of arranged arcs or elliptical arcs, so that at least a part of the contour is formed. Is formed in multiple arches. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if it is made of diamond crystal, it is cracked, cracked, cracked, or chipped. And chipping are prevented.
　更に個々の円弧や楕円弧には、腕時計部品を構成するダイヤモンド結晶内部から圧縮力が加わっている為、腕時計部品の外部から加わる衝撃力に対して耐性を有する。従ってこの点でもひびや割れ、クラック、又はチッピングや欠けが防止される。 Furthermore, since a compressive force is applied to each arc or elliptical arc from the inside of the diamond crystal that constitutes the wristwatch component, it is resistant to the impact force applied from the outside of the wristwatch component. Therefore, in this respect as well, cracks, cracks, cracks, chipping and chipping are prevented.
　更にピッチを330μｍ以上420μｍ以下と細かく設定する事で、腕時計部品の外部からの衝撃力を複数のアーチ形で分散させる事も出来る為、より一層腕時計部品のひびや割れ、クラック、又はチッピングや欠けを防止出来る。 Furthermore, by finely setting the pitch to 330 μm or more and 420 μm or less, the impact force from the outside of the wristwatch parts can be dispersed in multiple arch shapes, so that the wristwatch parts are further cracked, cracked, cracked, chipped or chipped. Can be prevented.
　また、円弧又は楕円弧のピッチを330μｍ以上420μｍ以下と設定する事で、円弧や楕円弧の存在を、腕時計の使用者が肉眼で識別不可能となる。従って、レーザの打ち抜き加工部をそのまま腕時計部品の輪郭の少なくとも一部としても、肉眼による見た目の美観が損なわれない。よって、腕時計部品の見た目の装飾性に配慮する事が出来る。 Also, by setting the pitch of the arc or elliptical arc to 330 μm or more and 420 μm or less, the existence of the arc or elliptical arc cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser is used as it is as at least a part of the contour of the wristwatch component, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch parts.
　またレーザによる打ち抜き加工後に、再度輪郭を整える別加工を設ける必要も無い為、腕時計部品の成形加工が容易化される。 Also, after punching with a laser, there is no need to provide another process to adjust the contour again, which facilitates the molding process of wristwatch parts.
　また本発明に係る腕時計に依れば、前記効果を有する腕時計部品を備えた腕時計が実現可能となる。 Further, according to the wristwatch according to the present invention, a wristwatch equipped with a wristwatch component having the above-mentioned effect can be realized.
(a) 本発明の実施形態に係る、機械式腕時計用のムーブメント部品の一例を示す正面図である。(b) 図１(a)の右側面図である。(a) It is a front view which shows an example of the movement component for a mechanical wristwatch which concerns on embodiment of this invention. (b) It is a right side view of FIG. 1 (a). (a) 図１の円Ａ部分の拡大図である。(b) 図２(a)の斜視図である。(a) It is an enlarged view of the circle A part of FIG. (b) It is a perspective view of FIG. 2 (a). (a) 図２(a)の変更形態を示す部分拡大図である。(b) 図３(a)の斜視図である。(a) It is a partially enlarged view which shows the modified form of FIG. 2 (a). (b) It is a perspective view of FIG. 3 (a). (a) 図２(a)の別の変更形態を示す部分拡大図である。(b) 図４(a)の斜視図である。(a) It is a partially enlarged view which shows another modified form of FIG. 2 (a). (b) It is a perspective view of FIG. 4 (a). 図４(a)の円Ｂ部分の拡大図である。It is an enlarged view of the circle B part of FIG. 4A. (a) 図２(a)の更に別の変更形態を示す部分拡大図である。(b) 図６(a)の斜視図である。(a) It is a partially enlarged view which shows still another modified form of FIG. 2 (a). (b) It is a perspective view of FIG. 6 (a). 図６(a)の円Ｃ部分の拡大図である。It is an enlarged view of the circle C part of FIG. 6A. (a) 図１のムーブメント部品の母材となるダイヤモンド結晶の一例を示す正面図である。(b) 図８(a)の右側面図である。(a) It is a front view which shows an example of the diamond crystal which becomes the base material of the movement component of FIG. (b) It is a right side view of FIG. 8 (a). (a) 図８(a)の変更形態を示す正面図である。(b) 図８(a)の別の変更形態を示す正面図である。(a) It is a front view which shows the modified form of FIG. 8 (a). (b) It is a front view which shows another modified form of FIG. 8 (a). 本発明の実施例に係る、機械式腕時計用のムーブメント部品の輪郭部分の一部を拡大したSEM観察像である。It is a SEM observation image which magnified a part of the outline part of the movement part for a mechanical wristwatch which concerns on embodiment of this invention. 本発明の別の実施例に係る、機械式腕時計用のムーブメント部品の輪郭部分の一部を拡大したSEM観察像である。It is a SEM observation image which magnified a part of the contour part of the movement part for a mechanical wristwatch which concerns on another embodiment of this invention.
　本実施の形態の第一の特徴は、ダイヤモンド結晶から成り、輪郭の少なくとも一部が、ピッチ330μｍ以上420μｍ以下で配列された円弧又は楕円弧で輪郭が形成されている腕時計部品である。 The first feature of the present embodiment is a wristwatch component made of diamond crystals, in which at least a part of the contour is formed by an arc or an elliptical arc arranged at a pitch of 330 μm or more and 420 μm or less.
　本実施の形態の第二の特徴は、平面方向の形状が方形状、円形状、又はオリフラ面が設けられた円形状であり、方形状の場合は１辺の長さが10.0ｍｍ以上、円形状の場合は直径が0.4インチ以上であるダイヤモンド結晶を用意し、ダイヤモンド結晶にレーザによる打ち抜き加工を施して、ピッチ330μｍ以上420μｍ以下で円弧又は楕円弧を配列させて輪郭の少なくとも一部を形成して、腕時計部品をダイヤモンド結晶から抜き出し、ダイヤモンド結晶から抜き出した腕時計部品に研磨を施して、腕時計部品を製造する、腕時計部品の製造方法である。 The second feature of the present embodiment is that the shape in the plane direction is a square shape, a circular shape, or a circular shape provided with an orientation flat surface. In the case of the square shape, the length of one side is 10.0 mm or more, and the circle. In the case of a shape, prepare a diamond crystal with a diameter of 0.4 inches or more, punch the diamond crystal with a laser, and arrange arcs or elliptical arcs with a pitch of 330 μm or more and 420 μm or less to form at least a part of the contour. , A method of manufacturing a watch part, in which a watch part is extracted from a diamond crystal and the watch part extracted from the diamond crystal is polished to manufacture the watch part.
　これらの構成及び製造方法に依れば、腕時計に備えられる腕時計部品の輪郭の少なくとも一部を、配列された複数の円弧又は楕円弧で形成する事で、輪郭の少なくとも一部が複数のアーチ形で形成されｓる。アーチ形は角部や折れ曲がり部が無い為、腕時計の外部から衝撃力が加わっても、衝撃力が分散され一点に集中しない為、ダイヤモンド結晶製であっても、ひびや割れ、クラック、又はチッピングや欠けが防止される。 According to these configurations and manufacturing methods, at least a part of the contour of the wristwatch component provided in the wristwatch is formed by a plurality of arranged arcs or elliptical arcs, so that at least a part of the contour is formed into a plurality of arches. It is formed. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if it is made of diamond crystal, it is cracked, cracked, cracked, or chipped. And chipping are prevented.
　更に、個々の円弧や楕円弧には、腕時計部品を構成するダイヤモンド結晶内部から圧縮力が加わっている為、腕時計部品の外部から加わる衝撃力に対して耐性を有する。従って、この点でもひびや割れ、クラック、又はチッピングや欠けが防止される。 Furthermore, since a compressive force is applied to each arc or elliptical arc from the inside of the diamond crystal that constitutes the wristwatch component, it is resistant to the impact force applied from the outside of the wristwatch component. Therefore, cracks, cracks, cracks, chipping and chipping are prevented in this respect as well.
　更にピッチを330μｍ以上420μｍ以下と細かく設定する事で、腕時計部品の外部からの衝撃力を複数のアーチ形で分散させる事も出来る為、より一層腕時計部品のひびや割れ、クラック、又はチッピングや欠けを防止出来る。 Furthermore, by finely setting the pitch to 330 μm or more and 420 μm or less, the impact force from the outside of the wristwatch parts can be dispersed in multiple arch shapes, so that the wristwatch parts are further cracked, cracked, cracked, chipped or chipped. Can be prevented.
　円弧又は楕円弧のピッチを330μｍ以上420μｍ以下と設定する事で、円弧や楕円弧の存在を、腕時計の使用者が肉眼で識別不可能となる。従って、レーザの打ち抜き加工部をそのまま腕時計部品の輪郭の少なくとも一部としても、肉眼による見た目の美観が損なわれない。よって、腕時計部品の見た目の装飾性に配慮する事が出来る。 By setting the pitch of the arc or elliptical arc to 330 μm or more and 420 μm or less, the existence of the arc or elliptical arc cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser is used as it is as at least a part of the contour of the wristwatch component, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch parts.
　またレーザによる打ち抜き加工後に、再度輪郭を整える別加工を設ける必要も無い為、腕時計部品の成形加工が容易化される。 Also, after punching with a laser, there is no need to provide another process to adjust the contour again, which facilitates the molding process of wristwatch parts.
　本実施の形態の第三の特徴は、ダイヤモンド結晶が平面方向の形状が方形状の場合は１辺の長さが10.0ｍｍ以上203.2ｍｍ以下か、またはダイヤモンド結晶が円形状又はオリフラ面が設けられた円形状の場合は直径が0.4インチ以上８インチ以下である腕時計部品の製造方法である。 The third feature of the present embodiment is that when the diamond crystal has a rectangular shape in the plane direction, the length of one side is 10.0 mm or more and 203.2 mm or less, or the diamond crystal has a circular shape or an orientation flat surface. In the case of a diamond shape, it is a method for manufacturing a wristwatch component having a diameter of 0.4 inches or more and 8 inches or less.
　この製造方法に依れば、前記効果に加えて、大型のダイヤモンド結晶を腕時計部品の母材として用意出来るので、大きな腕時計部品を製造する事が可能となる。 According to this manufacturing method, in addition to the above effects, a large diamond crystal can be prepared as a base material for a wristwatch part, so that a large wristwatch part can be manufactured.
　なお本発明に於いてダイヤモンド結晶とは、単結晶、多結晶、又は単結晶と多結晶の中間構造を有する結晶の何れかを指す。 In the present invention, the diamond crystal refers to any one of a single crystal, a polycrystal, or a crystal having an intermediate structure between a single crystal and a polycrystal.
　本実施の形態の第四の特徴は、厚みが0.3ｍｍ以上3.0ｍｍ以下である腕時計部品である。 The fourth feature of this embodiment is a wristwatch component having a thickness of 0.3 mm or more and 3.0 mm or less.
　本実施の形態の第五の特徴は、腕時計部品の厚みを0.3ｍｍ以上3.0ｍｍ以下とする腕時計部品の製造方法である。 The fifth feature of the present embodiment is a method for manufacturing a wristwatch component having a thickness of the wristwatch component of 0.3 mm or more and 3.0 mm or less.
　これらの構成及び製造方法に依れば、ダイヤモンド結晶製でありながら自立した腕時計部品を形成する事が出来る。 According to these configurations and manufacturing methods, it is possible to form a self-supporting wristwatch component while being made of diamond crystals.
　ここで本発明における自立した腕時計部品とは、自らの形状を保持できるだけでなく、ハンドリングに不都合が生じない程度の強度を有する腕時計部品を指す。このような強度を有して剛性を確保し、亀裂や断裂又はクラックの発生を防止するとの観点から、厚みは0.3ｍｍ以上である事が好ましい。 Here, the self-supporting wristwatch component in the present invention refers to a wristwatch component that not only retains its own shape but also has strength to the extent that handling is not inconvenient. From the viewpoint of having such strength, ensuring rigidity, and preventing the occurrence of cracks, tears, or cracks, the thickness is preferably 0.3 mm or more.
　またダイヤモンド結晶は極めて硬い材料なので、腕時計部品形成時の成形加工の容易性等を考慮すると、自立した腕時計部品としての厚みの上限は3.0ｍｍ以下が好ましい。 Since diamond crystals are extremely hard materials, the upper limit of the thickness of a self-supporting wristwatch component is preferably 3.0 mm or less, considering the ease of molding when forming the wristwatch component.
　本実施の形態の第六の特徴は、表面粗さRaが0.1μｍ以下である腕時計部品である。 The sixth feature of this embodiment is a wristwatch component having a surface roughness Ra of 0.1 μm or less.
　本実施の形態の第七の特徴は、腕時計部品の表面粗さRaを0.1μｍ以下とする腕時計部品の製造方法である。 The seventh feature of this embodiment is a method for manufacturing a wristwatch component having a surface roughness Ra of the wristwatch component of 0.1 μm or less.
　これらの構成及び製造方法に依れば、Raを0.1μｍ以下と設定する事により、腕時計部品表面での光の散乱が防止され、光沢がぼやける事無く輝きを有する。従って、腕時計部品の美観や高級感、装飾性が向上する。 According to these configurations and manufacturing methods, by setting Ra to 0.1 μm or less, light scattering on the surface of wristwatch parts is prevented, and the luster is brilliant without blurring. Therefore, the aesthetics, luxury, and decorativeness of the wristwatch parts are improved.
　本実施の形態の第八の特徴は、結晶境界、黒点、結晶欠陥、加工変質部の何れも有さない腕時計部品である。 The eighth feature of this embodiment is a wristwatch component that does not have any crystal boundaries, black spots, crystal defects, or processed alterations.
　本実施の形態の第九の特徴は、結晶境界、黒点、結晶欠陥、加工変質部の何れも有さないダイヤモンド結晶を用意するか、又は結晶境界、黒点、結晶欠陥、加工変質部の何れも有さないダイヤモンド結晶の部分から腕時計部品を抜き出す、腕時計部品の製造方法である。 The ninth feature of the present embodiment is to prepare a diamond crystal having no crystal boundary, black spot, crystal defect, or processed alteration part, or to prepare any of the crystal boundary, black spot, crystal defect, and processed alteration portion. This is a method for manufacturing watch parts, in which watch parts are extracted from the diamond crystal parts that do not exist.
　これらの構成及び製造方法に依れば、形成された腕時計部品が結晶境界、黒点、結晶欠陥、加工変質部を有さない為、腕時計部品の美観が向上する。 According to these configurations and manufacturing methods, the formed wristwatch parts do not have crystal boundaries, black spots, crystal defects, and processed alteration parts, so that the aesthetic appearance of the wristwatch parts is improved.
　なお本発明に於いて結晶欠陥とは、双晶、転位、歪みを指す。 In the present invention, crystal defects refer to twins, dislocations, and strains.
　本実施の形態の第十の特徴は、面方向に於ける結晶面が（100）である腕時計部品である。 The tenth feature of this embodiment is a wristwatch component having a crystal plane of (100) in the plane direction.
　本実施の形態の第十一の特徴は、ダイヤモンド結晶の面方向に於ける結晶面が（100）である腕時計部品の製造方法である。 The eleventh feature of the present embodiment is a method for manufacturing a wristwatch component in which the crystal plane in the plane direction of the diamond crystal is (100).
　これらの構成及び製造方法に依れば、腕時計部品の仕上げ面の結晶面を（100）とする事で、仕上げ面に加工変質部が形成される事が抑制される。また結晶面に加工変質部が形成されたとしても加工変質部の除去が容易となり、腕時計部品の美観を向上させる事が出来る。 According to these configurations and manufacturing methods, by setting the crystal plane of the finished surface of the wristwatch component to (100), it is possible to prevent the formation of a work-altered portion on the finished surface. Further, even if the processed altered portion is formed on the crystal plane, the processed altered portion can be easily removed, and the aesthetic appearance of the wristwatch component can be improved.
　本実施の形態の第十二の特徴は、前記何れかの腕時計部品を備えた、腕時計である。 The twelfth feature of the present embodiment is a wristwatch equipped with any of the above-mentioned wristwatch parts.
　この構成に依れば、前記効果を有する腕時計部品を備えた腕時計が実現可能となる。 According to this configuration, a wristwatch equipped with a wristwatch component having the above effect can be realized.
　以下、図１～図９を参照して本発明の実施形態に係る腕時計部品とその製造方法、及び同腕時計部品を備えた腕時計を説明する。 Hereinafter, a wristwatch component according to an embodiment of the present invention, a manufacturing method thereof, and a wristwatch provided with the wristwatch component will be described with reference to FIGS. 1 to 9.
　本発明に係る腕時計部品は、文字盤保護用部品である保護カバーや、機械式腕時計用のムーブメント部品を含む。ムーブメント部品としては、トゥールビヨンと云った複雑機構用途の部品も含む。具体的な腕時計部品として、トゥールビヨン用ムーブメント部品、軸受（bearing）、アンクル（anchor）、ひげゼンマイ（hair spring）、バランススプリング（balance spring）、底板（bottom plate）、ブリッジ（bridge）、レバー（lever）、てん輪（wheel）、パレットアセンブリ（pallet assembly）、プレート（plate）、文字盤（dial）が挙げられる。 The wristwatch parts according to the present invention include a protective cover which is a dial protection part and a movement part for a mechanical wristwatch. Movement parts also include tourbillon parts for complex complications. Specific watch parts include movement parts for tourbillon, bearings, anchors, hairsprings, balance springs, bottom plates, bridges, levers ( Examples include levers, wheels, pallet assemblies, plates, and dials.
　図１では本実施形態の一例として、ケージ（cage）の上部デッキ（upper deck）部品を示す。本実施形態の腕時計部品１はダイヤモンド結晶から成り、その輪郭の全部又は少なくとも一部が、配列された円弧又は楕円弧で形成されている。図１に於ける輪郭の一部（円Ａ部分）の部分拡大図を、図２に示す。なお図２～図７に於けるハッチングは、腕時計部品１の外観に現れる表面を表しており、断面を示しているわけでは無い。 FIG. 1 shows an upper deck part of a cage as an example of the present embodiment. The wristwatch component 1 of the present embodiment is made of a diamond crystal, and all or at least a part of its contour is formed of an arranged arc or elliptical arc. A partially enlarged view of a part of the contour (circle A part) in FIG. 1 is shown in FIG. Note that the hatching in FIGS. 2 to 7 represents the surface appearing in the appearance of the wristwatch component 1, not the cross section.
　腕時計部品を形成するダイヤモンド結晶は、単結晶や多結晶、それらの中間構造を有する結晶等が挙げられる。しかし単結晶は透明性が高く、腕時計部品の美観や高級感、装飾性を損なわないとの点で、最も好ましい。 Examples of diamond crystals forming wristwatch parts include single crystals, polycrystals, and crystals having an intermediate structure between them. However, single crystals are most preferable because they have high transparency and do not impair the aesthetics, luxury, and decorativeness of wristwatch parts.
　更に、腕時計部品１を形成するダイヤモンド結晶には、結晶境界、黒点、転位や双晶や歪み等の結晶欠陥、チッピング、ひび、割れ、クラック、欠け、加工変質部の何れも有さないものとする。形成された腕時計部品１が結晶境界、黒点、結晶欠陥、加工変質部を有さない事で、腕時計部品１の美観が向上する。加工変質部とは、機械研磨を施したダイヤモンド結晶の主面とその近傍の厚み部分に、機械加工に伴って発生する原子の乱れた結晶部分であり、転位を含む結晶の変質部である。なお加工変質部等の有無は、例えばシンクロトロンＸ線トポグラフィ法により測定すれば良い。 Further, the diamond crystal forming the wristwatch component 1 does not have any crystal boundaries, black spots, crystal defects such as dislocations, twins and strains, chipping, cracks, cracks, cracks, chips, and processed alterations. To do. Since the formed wristwatch component 1 does not have crystal boundaries, black spots, crystal defects, and processed alterations, the aesthetic appearance of the wristwatch component 1 is improved. The processing alteration part is a crystal portion in which atoms are disturbed by machining on the main surface of a diamond crystal subjected to mechanical polishing and a thickness portion in the vicinity thereof, and is a alteration portion of the crystal including dislocations. The presence or absence of a processed alteration part or the like may be measured by, for example, a synchrotron X-ray topography method.
　前記加工変質部は機械研磨加工に起因して発生するので、機械研磨加工後のダイヤモンド結晶の主面（即ち、腕時計部品１の結晶面４）にCMP（Chemical Mechanical Polishing）を施して、主面上から加工変質部を除去する。腕時計部品１を形成するダイヤモンド結晶は、カラーダイヤモンドでも良い。 Since the processing alteration part is generated due to mechanical polishing, CMP (Chemical Mechanical Polishing) is applied to the main surface of the diamond crystal after mechanical polishing (that is, the crystal surface 4 of the wristwatch component 1) to apply CMP (Chemical Mechanical Polishing) to the main surface. Remove the work-altered part from above. The diamond crystal forming the wristwatch component 1 may be a colored diamond.
　腕時計部品１の面方向に於ける結晶面４は（100）であり、腕時計部品１の仕上げ面でもある。腕時計部品１がダイヤモンド単結晶で成る場合、結晶面４の面方位は、（111），（110），（100）の何れでも良く、これら面方位に限定されない。但し、結晶面４を（100）に設定する事により、半導体素子や半導体デバイス形成用のダイヤモンド基板が転用可能となり、腕時計部品１の母材となるダイヤモンド結晶の生産性向上が図れる。 The crystal plane 4 in the surface direction of the wristwatch component 1 is (100), which is also the finished surface of the wristwatch component 1. When the wristwatch component 1 is made of a diamond single crystal, the plane orientation of the crystal plane 4 may be any of (111), (110), and (100), and is not limited to these plane orientations. However, by setting the crystal plane 4 to (100), the diamond substrate for forming a semiconductor element or a semiconductor device can be diverted, and the productivity of the diamond crystal used as the base material of the wristwatch component 1 can be improved.
　更に（100）を結晶面４とする事により、仕上げ面に加工変質部が形成される事が抑制される。また、結晶面４に加工変質部が形成されたとしても、（100）を結晶面４とすると（100）を貫通して加工変質部が形成される事が確認された。従って、加工変質部が主面表面に露出する為、CMPにより容易に除去が可能となり、腕時計部品１の美観を向上させる事が出来る。以上から、機械研磨により腕時計部品１の整形，整厚，仕上げ研磨まで行っても良いが、機械研磨では加工変質部が結晶面４に入るおそれがある為、CMPを仕上げ工程とする事が望ましい。 Furthermore, by setting (100) to the crystal plane 4, it is possible to prevent the formation of a work-altered portion on the finished surface. Further, it was confirmed that even if the processed altered portion is formed on the crystal plane 4, if (100) is set to the crystal plane 4, the processed altered portion is formed through (100). Therefore, since the processed and altered portion is exposed on the surface of the main surface, it can be easily removed by CMP, and the aesthetic appearance of the wristwatch component 1 can be improved. From the above, it is possible to perform shaping, thickening, and finish polishing of the wristwatch part 1 by mechanical polishing, but it is desirable to use CMP as the finishing process because the processed altered part may enter the crystal plane 4 in mechanical polishing. ..
　結晶面４を含む腕時計部品１の外観に現れる表面の表面粗さRaは、0.1μｍ以下とする。その表面粗さRa＝0.1μｍ以下を実現する為に、CMPによる鏡面研磨が施される。Raの測定は、表面粗さ測定機で行えば良い。Raを0.1μｍ以下と設定する事により、腕時計部品１表面での光の散乱が防止されるので、光沢がぼやける事無く輝きを有する。従って、腕時計部品１の美観や高級感、装飾性が向上する。 The surface roughness Ra appearing on the appearance of the wristwatch component 1 including the crystal plane 4 shall be 0.1 μm or less. In order to achieve the surface roughness Ra = 0.1 μm or less, mirror polishing by CMP is performed. Ra may be measured with a surface roughness measuring machine. By setting Ra to 0.1 μm or less, scattering of light on the surface of the wristwatch component 1 is prevented, so that the luster is brilliant without blurring. Therefore, the aesthetic appearance, luxury, and decorativeness of the wristwatch component 1 are improved.
　次に図２を参照して、腕時計部品１の輪郭の少なくとも一部を形成する円弧２に付いて説明する。輪郭に沿って設定されるピッチP1は、隣どうしの円弧２，２の同一箇所間の間隔を表す。また円弧２の直径は、約330μｍ以上420μｍである。複数の円弧２が輪郭に沿って配列されて、腕時計部品１の輪郭の少なくとも一部を形成している。その円弧２どうしのピッチP1は330μｍ以上420μｍ以下である。 Next, with reference to FIG. 2, the arc 2 forming at least a part of the contour of the wristwatch component 1 will be described. The pitch P1 set along the contour represents the distance between the same points of the arcs 2 and 2 adjacent to each other. The diameter of the arc 2 is about 330 μm or more and 420 μm. A plurality of arcs 2 are arranged along the contour to form at least a part of the contour of the wristwatch component 1. The pitch P1 between the arcs 2 is 330 μm or more and 420 μm or less.
　なお、腕時計部品１の輪郭を形成する円弧は図３に示す様に楕円弧３に変更しても良い。輪郭に沿って設定されるピッチP2は、隣どうしの楕円弧３，３の同一箇所間の間隔を表す。また楕円弧３の長径は約330μｍ以上420μｍ、短径は約280μｍ以上300μｍ以下である。
更に複数の楕円弧３が輪郭に沿って配列されて、腕時計部品１の輪郭の少なくとも一部を形成している。その楕円弧３どうしのピッチP2は330μｍ以上420μｍ以下である。 The arc forming the contour of the wristwatch component 1 may be changed to an elliptical arc 3 as shown in FIG. The pitch P2 set along the contour represents the distance between the same points of the elliptical arcs 3 and 3 adjacent to each other. The major axis of the elliptical arc 3 is about 330 μm or more and 420 μm, and the minor axis is about 280 μm or more and 300 μm or less.
Further, a plurality of elliptical arcs 3 are arranged along the contour to form at least a part of the contour of the wristwatch component 1. The pitch P2 between the elliptical arcs 3 is 330 μm or more and 420 μm or less.
　腕時計に備えられる腕時計部品１の輪郭の少なくとも一部を、配列された複数の円弧２又は楕円弧３で形成する事で、輪郭の少なくとも一部が複数のアーチ形で形成される。アーチ形は角部や折れ曲がり部が無い為、腕時計の外部から衝撃力が加わっても、衝撃力が分散され一点に集中しない為、腕時計部品１がダイヤモンド結晶製であっても、ひびや割れ、クラック、又はチッピングや欠けが防止される。 By forming at least a part of the contour of the wristwatch component 1 provided on the wristwatch with a plurality of arranged arcs 2 or elliptical arcs 3, at least a part of the contour is formed by a plurality of arches. Since the arch shape has no corners or bends, even if an impact force is applied from the outside of the wristwatch, the impact force is dispersed and does not concentrate on one point, so even if the wristwatch part 1 is made of diamond crystal, it will crack or crack. Cracks, chipping and chipping are prevented.
　更に、個々の円弧２や楕円弧３には、腕時計部品１を構成するダイヤモンド結晶内部から圧縮力が加わっている為、腕時計部品１の外部から加わる衝撃力に対して耐性を有する。従ってこの点でもひびや割れ、クラック、又はチッピングや欠けが防止される。 Further, since the individual arcs 2 and elliptical arcs 3 are subjected to a compressive force from the inside of the diamond crystal constituting the wristwatch component 1, they are resistant to an impact force applied from the outside of the wristwatch component 1. Therefore, in this respect as well, cracks, cracks, cracks, chipping and chipping are prevented.
　更にピッチP1又はP2を、330μｍ以上420μｍ以下と細かく設定する事で、腕時計部品１の外部から衝撃力が加わっても、その衝撃力を複数のアーチ形で分散させる事も出来る。依ってより一層腕時計部品１でのひびや割れ、クラック、又はチッピングや欠けの発生を防止出来る。 Furthermore, by finely setting the pitch P1 or P2 to 330 μm or more and 420 μm or less, even if an impact force is applied from the outside of the wristwatch component 1, the impact force can be dispersed in a plurality of arch shapes. Therefore, it is possible to further prevent the occurrence of cracks, cracks, cracks, chippings and chips in the wristwatch component 1.
　円弧２又は楕円弧３を配列させる輪郭箇所は、腕時計部品に於いて相対的に薄い箇所の輪郭や、鋭角で成形された輪郭など、外部の衝撃力に対し強度と靱性が不足する箇所が望ましい。 It is desirable that the contours where the arcs 2 or elliptical arcs 3 are arranged are those that lack strength and toughness against external impact forces, such as the contours of relatively thin parts of wristwatch parts and the contours formed at acute angles.
　更にピッチP1又はP2を330μｍ以上420μｍ以下の範囲内と設定する事で、円弧２や楕円弧３の存在を、腕時計の使用者が肉眼で識別不可能となる。従って、後述するレーザの打ち抜き加工部をそのまま腕時計部品１の輪郭の少なくとも一部としても、肉眼による見た目の美観が損なわれない。よって、腕時計部品１の見た目の装飾性に配慮する事が出来る。 Furthermore, by setting the pitch P1 or P2 within the range of 330 μm or more and 420 μm or less, the existence of the arc 2 and the elliptical arc 3 cannot be visually identified by the wristwatch user. Therefore, even if the punched portion of the laser described later is used as it is as at least a part of the contour of the wristwatch component 1, the appearance of the naked eye is not impaired. Therefore, it is possible to consider the decorativeness of the appearance of the wristwatch component 1.
　またレーザによる打ち抜き加工後に、再度輪郭を整える別加工を設ける必要も無い為、腕時計部品１の成形加工が容易化される。 Further, since it is not necessary to provide another processing for adjusting the contour again after the punching processing by the laser, the molding processing of the wristwatch part 1 is facilitated.
　腕時計部品１の厚みｔは任意に設定可能であるが、0.3ｍｍ以上3.0ｍｍ以下と設定する事で、ダイヤモンド結晶製でありながら自立した腕時計部品を形成する事が出来る。ここで自立した腕時計部品とは、自らの形状を保持できるだけでなく、ハンドリングに不都合が生じない程度の強度を有する腕時計部品を指す。このような強度を有して剛性を確保し、亀裂や断裂又はクラックの発生を防止するとの観点から、厚みｔは0.3ｍｍ以上である事が好ましい。 The thickness t of the wristwatch component 1 can be set arbitrarily, but by setting it to 0.3 mm or more and 3.0 mm or less, it is possible to form a self-supporting wristwatch component even though it is made of diamond crystals. Here, the self-supporting wristwatch component refers to a wristwatch component that not only retains its own shape but also has strength to the extent that handling is not inconvenient. The thickness t is preferably 0.3 mm or more from the viewpoint of having such strength, ensuring rigidity, and preventing cracks, tears, or cracks from occurring.
　またダイヤモンド結晶は極めて硬い材料なので、腕時計部品形成時の成形加工の容易性等を考慮すると、自立した腕時計部品としての厚みｔの上限は3.0ｍｍ以下が好ましい。従って、腕時計部品１の厚みｔは0.3ｍｍ以上3.0ｍｍ以下の範囲内に設定される。 Since diamond crystals are extremely hard materials, the upper limit of the thickness t of a self-supporting wristwatch component is preferably 3.0 mm or less, considering the ease of molding when forming the wristwatch component. Therefore, the thickness t of the wristwatch component 1 is set within the range of 0.3 mm or more and 3.0 mm or less.
　以上の様な、ダイヤモンド結晶から製造された腕時計部品１が腕時計に備えられる。この腕時計に依れば、前記効果を有する腕時計部品１を備えた腕時計が実現可能となる。また腕時計の構造を、ムーブメント部品が腕時計外部から目視可能とする事で、腕時計の使用者に見た目の楽しさと、美観や高級感、及び装飾性を付加出来る。従って、ムーブメント部品をダイヤモンド結晶製とする事で、腕時計に一層の高級感と装飾性を加える事が可能となる。 The wristwatch part 1 manufactured from diamond crystals as described above is provided in the wristwatch. According to this wristwatch, a wristwatch including the wristwatch component 1 having the above effect can be realized. In addition, by making the structure of the wristwatch visible from the outside of the wristwatch, it is possible to add aesthetics, luxury, and decorativeness to the user of the wristwatch. Therefore, by making the movement parts made of diamond crystals, it is possible to add a sense of luxury and decorativeness to the wristwatch.
　またムーブメント部品以外として、保護カバーと云った外観で目視可能な外装品をダイヤモンド結晶製とする事で、腕時計に更なる高級感と装飾性を付加可能となる。更に外装品がダイヤモンド製であっても、その外装品を本発明に係る腕時計部品とする事で、腕時計外部からの衝撃力に強く、ひびや割れ、クラック、又はチッピングや欠けの発生を防止出来る。よってダイヤモンド結晶の腕時計用途への実用化促進が期待される。 In addition to the movement parts, the protective cover, which is a visible exterior part, is made of diamond crystals, which makes it possible to add a sense of luxury and decoration to the wristwatch. Further, even if the exterior product is made of diamond, by using the exterior product as a wristwatch component according to the present invention, it is strong against an impact force from the outside of the wristwatch and can prevent cracks, cracks, cracks, chipping and chipping. .. Therefore, it is expected that the practical application of diamond crystals to wristwatch applications will be promoted.
　次に腕時計部品１の製造方法を説明する。最初に図８に示すようなダイヤモンド結晶を用意する。図８のダイヤモンド結晶は、腕時計部品１の母材となり、その外観形状は板形状である。 Next, the manufacturing method of the wristwatch part 1 will be described. First, a diamond crystal as shown in FIG. 8 is prepared. The diamond crystal of FIG. 8 serves as a base material for the wristwatch component 1, and its external shape is a plate shape.
　またダイヤモンド結晶の平面方向の形状は、図８の様な方形状や、図９(a)の様な円形状、又は図９(b)の様なオリフラ（オリエンテーションフラット）面が設けられた円形状の何れかとすれば良い。方形状としては、正方形や長方形が挙げられる。なお、図９のような平板状の基板を母材に用いる事で、半導体用のダイヤモンド結晶製基板をそのまま腕時計部品１の母材に転用する事が可能となり、腕時計部品１の生産性を向上させる事が出来る。 The shape of the diamond crystal in the plane direction is a square shape as shown in FIG. 8, a circular shape as shown in FIG. 9 (a), or a circle provided with an orientation flat surface as shown in FIG. 9 (b). Any shape may be used. Examples of the square shape include a square and a rectangle. By using the flat substrate as shown in FIG. 9 as the base material, the diamond crystal substrate for semiconductors can be directly used as the base material of the wristwatch component 1, and the productivity of the wristwatch component 1 is improved. Can be made to.
　方形状の場合は１辺の長さＬが10.0ｍｍ以上203.2ｍｍ以下、円形状の場合は直径φが0.4インチ以上８インチ以下であるダイヤモンド結晶を用意する。方形状が長方形の場合、短辺の長さを少なくとも10.0ｍｍ以上且つ長辺未満と設定すると共に、長辺の上限値は203.2ｍｍと設定する。この様な数値範囲に長さ又は直径を設定する事により、大型のダイヤモンド結晶を腕時計部品１の母材として用意出来るので、大きな腕時計部品１を製造する事が可能となる。なおダイヤモンド結晶の厚みＴは、腕時計部品１の厚みｔに研磨代を加えた所望の値とする。 Prepare a diamond crystal with a side length L of 10.0 mm or more and 203.2 mm or less in the case of a square shape, and a diameter φ of 0.4 inches or more and 8 inches or less in the case of a circular shape. When the square shape is rectangular, the length of the short side is set to at least 10.0 mm and less than the long side, and the upper limit of the long side is set to 203.2 mm. By setting the length or diameter in such a numerical range, a large diamond crystal can be prepared as a base material of the wristwatch component 1, so that the large wristwatch component 1 can be manufactured. The thickness T of the diamond crystal is a desired value obtained by adding the polishing allowance to the thickness t of the wristwatch component 1.
　ダイヤモンド結晶の製造方法は、下地基板にダイヤモンド結晶基板を用い、ダイヤモンド結晶をホモエピタキシャル成長させる方法が挙げられる。他にはサファイア基板や酸化マグネシウム（MgO）基板を下地基板として用い、その下地基板上にヘテロエピタキシャル成長法によりダイヤモンド結晶を形成する製造方法が挙げられる。また成長方法の具体例としては、パルスレーザ蒸着（PLD：Pulsed Laser Deposition）法や、化学気相蒸着法（CVD：Chemical Vapor Deposition）法、マイクロ波プラズマCVD等の気相成長法が挙げられる。又は、国際公開公報WO2015／046294号記載の方法（ダイヤモンド製の柱の先端に、ダイヤモンド単結晶の核を配置後、コアレッセンスさせてダイヤモンド単結晶を製造する方法）を利用しても良い。 As a method for producing a diamond crystal, a method of homoepitaxially growing a diamond crystal using a diamond crystal substrate as a base substrate can be mentioned. Another example is a manufacturing method in which a sapphire substrate or a magnesium oxide (MgO) substrate is used as a base substrate and diamond crystals are formed on the base substrate by a heteroepitaxial growth method. Specific examples of the growth method include a pulsed laser deposition (PLD) method, a chemical vapor deposition (CVD) method, and a vapor phase growth method such as microwave plasma CVD. Alternatively, the method described in International Publication No. WO2015 / 046294 (a method of producing a diamond single crystal by arranging a core of a diamond single crystal at the tip of a diamond pillar and then coalescence) may be used.
　用意したダイヤモンド結晶に、次にレーザの連続照射による打ち抜き加工を施して、前記円弧２又は楕円弧３を配列させて輪郭の少なくとも一部を形成して、腕時計部品１をダイヤモンド結晶から抜き出す。 Next, the prepared diamond crystal is punched by continuous irradiation of a laser to arrange the arc 2 or the elliptical arc 3 to form at least a part of the contour, and the wristwatch component 1 is extracted from the diamond crystal.
　レーザ照射に当たっては、予め結晶境界、黒点、結晶欠陥、加工変質部の何れも有さないダイヤモンド結晶を用意するか、又は結晶境界、黒点、結晶欠陥、加工変質部の何れも有さないダイヤモンド結晶の部分を選定し、その部分から前記腕時計部品１を抜き出す様にレーザを照射する。 For laser irradiation, a diamond crystal having no crystal boundary, black spot, crystal defect, or processing alteration part is prepared in advance, or a diamond crystal having no crystal boundary, black spot, crystal defect, or processing alteration part is prepared. Is selected, and the laser is irradiated so as to extract the wristwatch component 1 from the portion.
　レーザで腕時計部品１を抜き出す際は、レーザを一定時間間隔で照射すると共に、ダイヤモンド結晶もステージによりレーザの照射間隔と同期させて一定間隔、腕時計部品１の輪郭形状に沿ってスライドさせる事で、輪郭に沿って前記微細な円弧又は楕円弧を配列させると共に、間隔（ピッチP1又はP2）を空けて連続して形成する。詳述すると、CAD／CAEに図面データを読み込み、その図面データの腕時計部品１の輪郭線に沿ってレーザを照射させていく。又はダイヤモンド結晶を固定させると共に、レーザ出射側を輪郭形状に沿って移動させつつ照射する事で、円弧２又は楕円弧３を配列させて前記間隔を空けて連続して形成しても良い。 When extracting the wristwatch component 1 with a laser, the laser is irradiated at regular time intervals, and the diamond crystal is also slid along the contour shape of the wristwatch component 1 at regular intervals in synchronization with the laser irradiation interval by the stage. The fine arcs or elliptical arcs are arranged along the contour and are continuously formed at intervals (pitch P1 or P2). More specifically, the drawing data is read into CAD / CAE, and the laser is irradiated along the contour line of the wristwatch component 1 of the drawing data. Alternatively, by fixing the diamond crystal and irradiating while moving the laser emitting side along the contour shape, the arcs 2 or the elliptical arcs 3 may be arranged and continuously formed at the above intervals.
　本発明では、腕時計部品１の輪郭の全部又は少なくとも一部を、円弧２又は楕円弧３の形成のみで形成し、且つダイヤモンド結晶から所望の形状で腕時計部品を抜き出すので、円弧２間又は楕円弧３間には隙間が無いように、打ち抜き間隔を設定する。従って、円弧２又は楕円弧３どうしが部分的に重なっても良い。 In the present invention, all or at least a part of the contour of the wristwatch component 1 is formed only by forming the arc 2 or the elliptical arc 3, and the wristwatch component is extracted from the diamond crystal in a desired shape. Set the punching interval so that there is no gap in. Therefore, the arc 2 or the elliptical arc 3 may partially overlap each other.
　なおピッチ（P1又はP2）が330μｍ未満では、ビッチが微小過ぎてレーザの打ち込み回数が過多となり、腕時計部品１の量産性が低下してしまい、好ましくない。一方、ピッチが420μｍを超えると、各円弧２又は各楕円弧３が個別に形成されるだけで連結せず、ダイヤモンド結晶から腕時計部品を抜き出せなくなる可能性が生じる為、やはり好ましくない。 If the pitch (P1 or P2) is less than 330 μm, the bitch is too small and the number of laser shots is excessive, which reduces the mass productivity of the wristwatch component 1, which is not preferable. On the other hand, if the pitch exceeds 420 μm, each arc 2 or each elliptical arc 3 is formed individually but not connected, and there is a possibility that the wristwatch component cannot be extracted from the diamond crystal, which is also not preferable.
　また腕時計部品１の母材となるダイヤモンド結晶の面方向に於ける結晶面は、腕時計部品１の結晶面４となるので（100）が最も好ましい。 Further, the crystal plane in the plane direction of the diamond crystal which is the base material of the wristwatch component 1 is the crystal plane 4 of the wristwatch component 1, so (100) is the most preferable.
　本実施形態に係るレーザ出射条件は、次の通りである。ダイヤモンド結晶の熱影響を抑制するため、パルスレーザの使用が好ましく、波長はダイヤモンド結晶での吸収が高いと共に、熱影響の抑制される短波長がより好ましい。このような特性を満たすレーザとして、例えばNd:YAGレーザが挙げられ、波長は532ｎｍ又は355ｎｍ、出力は数百ｍＷ～数Ｗとする。 The laser emission conditions according to this embodiment are as follows. In order to suppress the heat effect of the diamond crystal, it is preferable to use a pulse laser, and the wavelength is more preferably a short wavelength in which the absorption of the diamond crystal is high and the heat effect is suppressed. Examples of lasers satisfying such characteristics include Nd: YAG lasers, which have a wavelength of 532 nm or 355 nm and an output of several hundred mW to several watts.
　ダイヤモンド結晶から抜き出した腕時計部品１に、次に機械研磨及びCMPによる鏡面研磨を施して、腕時計部品１の製造を完了する。鏡面研磨後の腕時計部品１の厚みｔは0.3ｍｍ以上3.0ｍｍ以下とする。また、鏡面研磨後の腕時計部品１の結晶面４を含む外観に現れる表面粗さRaは0.1μｍ以下とする。 The wristwatch part 1 extracted from the diamond crystal is then subjected to mechanical polishing and mirror polishing by CMP to complete the production of the wristwatch part 1. The thickness t of the wristwatch component 1 after mirror polishing shall be 0.3 mm or more and 3.0 mm or less. Further, the surface roughness Ra appearing on the appearance including the crystal plane 4 of the wristwatch component 1 after mirror polishing shall be 0.1 μm or less.
　更に必要により、円弧２間に形成される凸部2aの先端を平面研磨盤等で研磨して、図４と図５又は図６と図７に示すように先端を平坦な凸部2b又は丸めた凸部2cに成形する。こうする事で、腕時計部品１の外部から衝撃力が加わった時の先端のひびや割れ、チッピングや欠けが防止される。また、楕円弧３間に形成される凸部3aの先端も、同様に研磨しても良い。 Further, if necessary, the tip of the convex portion 2a formed between the arcs 2 is polished with a flat surface polishing machine or the like, and the tip is flattened by the convex portion 2b or rounded as shown in FIGS. 4 and 5 or 6 and 7. Mold into the convex part 2c. By doing so, cracks, cracks, chipping and chipping of the tip when an impact force is applied from the outside of the wristwatch component 1 are prevented. Further, the tip of the convex portion 3a formed between the elliptical arcs 3 may be similarly polished.
　以下に本発明の実施例を説明するが、本発明は以下の実施例にのみ限定されるものではない。最初に機械式腕時計用のムーブメント部品の母材として、平面方向の形状が10ｍｍ角の正方形で厚さが0.6ｍｍの、無色のダイヤモンド単結晶平板を２枚、マイクロ波プラズマCVDを使用したヘテロエピタキシャル成長法により用意した。なお各ダイヤモンド単結晶平板の主面の面方位は、（100）とした。更に、各ダイヤモンド単結晶平板には、結晶境界、黒点、転位や双晶や歪み等の結晶欠陥、チッピング、ひび、割れ、クラック、欠け、加工変質部の何れも有していない事を確認した。 Examples of the present invention will be described below, but the present invention is not limited to the following examples. First, as a base material for movement parts for mechanical watches, two colorless diamond single crystal flat plates with a square shape of 10 mm square and a thickness of 0.6 mm in the plane direction, and heteroepitaxial growth using microwave plasma CVD were used. Prepared by law. The plane orientation of the main surface of each diamond single crystal flat plate was set to (100). Furthermore, it was confirmed that each diamond single crystal flat plate had no crystal boundaries, black spots, crystal defects such as dislocations, twins and strains, chipping, cracks, cracks, cracks, chips, and processing alterations. ..
　そのダイヤモンド単結晶平板に、レーザを連続照射して打ち抜き加工を施し、円弧を重なる様に配列させて腕時計部品の輪郭を形成し、図１の外形形状を有する腕時計部品１をムーブメント部品としてダイヤモンド単結晶平板から抜き出した。使用するレーザはNd:YAGレーザで、波長は355ｎｍ、出力は数Ｗと適宜設定した。 The diamond single crystal flat plate is continuously irradiated with a laser and punched, and the arcs are arranged so as to overlap each other to form the contour of the wristwatch component. The wristwatch component 1 having the outer shape shown in FIG. It was extracted from the crystal plate. The laser used was an Nd: YAG laser, with a wavelength of 355 nm and an output of several watts.
　ダイヤモンド単結晶平板から抜き出した腕時計部品１に、次に機械研磨及びCMPによる鏡面研磨を施して、腕時計部品１の厚みｔを0.5ｍｍ、表面粗さRaを0.1μｍとした。 The watch component 1 extracted from the diamond single crystal flat plate was then subjected to mechanical polishing and mirror polishing by CMP to obtain a thickness t of the watch component 1 of 0.5 mm and a surface roughness Ra of 0.1 μm.
　図１０に本実施例に係る、機械式腕時計用のムーブメント部品の輪郭部分の一部を拡大したSEM（Scanning Electron Microscope：走査電子顕微鏡）観察像を示す。また図１１には別の実施例に係るムーブメント部品の輪郭部分の一部を拡大したSEM観察像を示す。図１０及び図１１に於いて、グレー部分が腕時計部品１であり、黒部分が空間を示す。図１０及び図１１より、腕時計部品１の輪郭が連続配列された複数の円弧によって形成されている事が確認された。各円弧間のピッチは、図１０及び図１１でどちらも約357μｍであった。 FIG. 10 shows an SEM (Scanning Electron Microscope) observation image in which a part of the contour portion of the movement component for a mechanical watch according to this embodiment is enlarged. Further, FIG. 11 shows an enlarged SEM observation image of a part of the contour portion of the movement component according to another embodiment. In FIGS. 10 and 11, the gray portion indicates the wristwatch component 1, and the black portion indicates the space. From FIGS. 10 and 11, it was confirmed that the contour of the wristwatch component 1 was formed by a plurality of arcs in which the wristwatch component 1 was continuously arranged. The pitch between the arcs was about 357 μm in both FIGS. 10 and 11.
　作製した腕時計部品１に、衝撃試験として外部から衝撃力を加えても、ひびや割れ、クラック、又はチッピングや欠けがが入らない事が確認された。 It was confirmed that no cracks, cracks, cracks, chippings or chips were formed in the manufactured wristwatch part 1 even when an impact force was applied from the outside as an impact test.
　　　１　　　腕時計部品
　　　２　　　腕時計部品の輪郭の一部を形成する円弧
　　　2a、2b、2c　　　円弧間の凸部
　　　３　　　腕時計部品の輪郭の一部を形成する楕円弧
　　　3a　　　楕円弧間の凸部
　　　４　　　腕時計部品の仕上げ面である結晶面
　　　Ｌ　　　ダイヤモンド結晶の１辺の長さ
　　　P1　　　円弧間のピッチ
　　　P2　　　楕円弧間のピッチ
　　　ｔ　　　腕時計部品の厚み
　　　Ｔ　　　ダイヤモンド結晶の厚み
　　　φ　　　ダイヤモンド結晶の直径 1 Watch parts 2 Arcs that form part of the contour of watch parts 2a, 2b, 2c Convex parts between arcs 3 Elliptical arcs that form part of the contours of watch parts 3a Convex parts between elliptical arcs 4 On the finished surface of watch parts A certain crystal plane L Length of one side of a diamond crystal P1 Pitch between arcs P2 Pitch between elliptical arcs t Thickness of watch parts T Thickness of diamond crystal φ Diameter of diamond crystal

Claims (12)

  1. 　ダイヤモンド結晶から成り、
    　輪郭の少なくとも一部が、ピッチ330μｍ以上420μｍ以下で配列された円弧又は楕円弧で形成されている腕時計部品。     Consisting of diamond crystals
    A wristwatch component in which at least a part of the contour is formed by an arc or an elliptical arc arranged at a pitch of 330 μm or more and 420 μm or less.
  2. 　前記腕時計部品の厚みが0.3ｍｍ以上3.0ｍｍ以下である請求項１に記載の腕時計部品。 The wristwatch component according to claim 1, wherein the thickness of the wristwatch component is 0.3 mm or more and 3.0 mm or less.
  3. 　前記腕時計部品の表面粗さRaが0.1μｍ以下である請求項１又は２に記載の腕時計部品。 The wristwatch component according to claim 1 or 2, wherein the surface roughness Ra of the wristwatch component is 0.1 μm or less.
  4. 　結晶境界、黒点、結晶欠陥、加工変質部の何れも有さない請求項１～３の何れかに記載の腕時計部品。 The wristwatch component according to any one of claims 1 to 3, which has no crystal boundary, black spot, crystal defect, or processed alteration part.
  5. 　前記腕時計部品の面方向に於ける結晶面が（100）である請求項１～４の何れかに記載の腕時計部品。 The wristwatch component according to any one of claims 1 to 4, wherein the crystal plane in the plane direction of the wristwatch component is (100).
  6. 　請求項１～５の何れかの腕時計部品を備えた、腕時計。 A wristwatch equipped with any of the wristwatch parts of claims 1 to 5.
  7. 　平面方向の形状が方形状、円形状、又はオリフラ面が設けられた円形状であり、前記方形状の場合は１辺の長さが10.0ｍｍ以上、前記円形状の場合は直径が0.4インチ以上であるダイヤモンド結晶を用意し、
    　前記ダイヤモンド結晶にレーザによる打ち抜き加工を施して、ピッチ330μｍ以上420μｍ以下で円弧又は楕円弧を配列させて輪郭の少なくとも一部を形成して、腕時計部品を前記ダイヤモンド結晶から抜き出し、
    　前記ダイヤモンド結晶から抜き出した前記腕時計部品に研磨を施して、腕時計部品を製造する、腕時計部品の製造方法。     The shape in the plane direction is a square shape, a circular shape, or a circular shape provided with an orientation flat surface. In the case of the square shape, the length of one side is 10.0 mm or more, and in the case of the circular shape, the diameter is 0.4 inch or more. Prepare a diamond crystal that is
    The diamond crystal is punched by a laser to form at least a part of the contour by arranging arcs or elliptical arcs at a pitch of 330 μm or more and 420 μm or less, and the wristwatch component is extracted from the diamond crystal.
    A method for manufacturing a wristwatch part, wherein the wristwatch part extracted from the diamond crystal is polished to manufacture the wristwatch part.
  8. 　前記１辺の長さが、10.0ｍｍ以上203.2ｍｍ以下か、または前記直径が0.4インチ以上８インチ以下である請求項７に記載の腕時計部品の製造方法。 The method for manufacturing a wristwatch component according to claim 7, wherein the length of one side is 10.0 mm or more and 203.2 mm or less, or the diameter is 0.4 inches or more and 8 inches or less.
  9. 　前記研磨後の前記腕時計部品の厚みを0.3ｍｍ以上3.0ｍｍ以下とする請求項７又は８に記載の腕時計部品の製造方法。 The method for manufacturing a wristwatch component according to claim 7 or 8, wherein the thickness of the wristwatch component after polishing is 0.3 mm or more and 3.0 mm or less.
  10. 　前記研磨後の前記腕時計部品の表面粗さRaを0.1μｍ以下とする請求項７～９の何れかに記載の腕時計部品の製造方法。 The method for manufacturing a wristwatch component according to any one of claims 7 to 9, wherein the surface roughness Ra of the wristwatch component after polishing is 0.1 μm or less.
  11. 　結晶境界、黒点、結晶欠陥、加工変質部の何れも有さない前記ダイヤモンド結晶を用意するか、又は前記結晶境界、前記黒点、前記結晶欠陥、前記加工変質部の何れも有さない前記ダイヤモンド結晶の部分から前記腕時計部品を抜き出す請求項７～１０の何れかに記載の腕時計部品の製造方法。 The diamond crystal having no crystal boundary, black spot, crystal defect, or processing alteration portion is prepared, or the diamond crystal having none of the crystal boundary, the black dot, the crystal defect, or the processing alteration portion. The method for manufacturing a wristwatch component according to any one of claims 7 to 10, wherein the wristwatch component is extracted from the portion.
  12. 　前記ダイヤモンド結晶の面方向に於ける結晶面が（100）である請求項７～１１の何れかに記載の腕時計部品の製造方法。 The method for manufacturing a wristwatch component according to any one of claims 7 to 11, wherein the crystal plane in the plane direction of the diamond crystal is (100).
PCT/JP2020/041218 2019-11-12 2020-11-04 Wristwatch component, wristwatch, and wristwatch component manufacturing method WO2021095605A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662914A (en) * 1992-06-04 1994-03-08 Jakob Lach Gmbh & Co Kg Diamond ornament and its production
WO2018100024A1 (en) * 2016-12-01 2018-06-07 Element Six Technologies Limited Single crystal synthetic diamond material via chemical vapour deposition
WO2018155381A1 (en) * 2017-02-23 2018-08-30 アダマンド並木精密宝石株式会社 Component, and watch, jewelry, bag, accoutrement, tag, and slide fastener provided with said component
WO2019043432A1 (en) * 2017-08-30 2019-03-07 Ecole Polytechnique Federale De Lausanne (Epfl) Single crystalline diamond part production method for stand alone single crystalline mechanical and optical component production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662914A (en) * 1992-06-04 1994-03-08 Jakob Lach Gmbh & Co Kg Diamond ornament and its production
WO2018100024A1 (en) * 2016-12-01 2018-06-07 Element Six Technologies Limited Single crystal synthetic diamond material via chemical vapour deposition
WO2018155381A1 (en) * 2017-02-23 2018-08-30 アダマンド並木精密宝石株式会社 Component, and watch, jewelry, bag, accoutrement, tag, and slide fastener provided with said component
WO2019043432A1 (en) * 2017-08-30 2019-03-07 Ecole Polytechnique Federale De Lausanne (Epfl) Single crystalline diamond part production method for stand alone single crystalline mechanical and optical component production

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