EP2686135B1 - Gehäuseteil für eine uhr und system zu seiner herstellung - Google Patents

Gehäuseteil für eine uhr und system zu seiner herstellung Download PDF

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Publication number
EP2686135B1
EP2686135B1 EP12705111.8A EP12705111A EP2686135B1 EP 2686135 B1 EP2686135 B1 EP 2686135B1 EP 12705111 A EP12705111 A EP 12705111A EP 2686135 B1 EP2686135 B1 EP 2686135B1
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EP
European Patent Office
Prior art keywords
curvature
piece
blank
axis
drum
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.)
Active
Application number
EP12705111.8A
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English (en)
French (fr)
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EP2686135A1 (de
Inventor
Gilles Derriey
Jean-Paul Tassetti
Patrice Dumont
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comadur SA
Original Assignee
Comadur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comadur SA filed Critical Comadur SA
Priority to EP12705111.8A priority Critical patent/EP2686135B1/de
Publication of EP2686135A1 publication Critical patent/EP2686135A1/de
Application granted granted Critical
Publication of EP2686135B1 publication Critical patent/EP2686135B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/06—Devices for shaping or setting watch glasses
    • G04D3/065—Shaping by removing material, e.g. cutting out from a plate, milling the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies

Definitions

  • the invention relates to a dressing part for a timepiece and its manufacturing system.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a new manufacturing system allowing the mass production of special glasses whose longitudinal curvatures are independent of the transverse curvatures.
  • the invention relates to a system for manufacturing a trim piece for a timepiece comprising a fixing device comprising a drum rotatably mounted along a first axis and carrying at least one blank of said piece, a machining device comprising abrasive means rotatably mounted along a second axis and intended to machine said at least one blank to form a first curvature characterized in that the machining device further comprises means for moving said second axis so that the latter is movably mounted in a curved director to selectively form a second curvature at said at least one blank and in that said first axis and said second axis are perpendicular to intersect the machining lines.
  • the invention relates to a trim piece having an upper surface and a lower surface characterized in that at least one of the faces has a longitudinal curvature and a transverse curvature which are different and in that at least one one of said longitudinal and transverse curvatures is asymmetrical.
  • the covering part can be complex and allows, for example, to form an asymmetrical ice or whose curve appears visually asymmetrical to adapt for example to timepiece displays that are not centered by compared to its case.
  • the invention relates to a timepiece characterized in that it comprises a dressing part according to one of the previous variants.
  • the invention relates to a non-symmetrical trim piece such as an ice, a case or a dial based on crystallized alumina such as sapphire, corundum or ruby.
  • a non-symmetrical trim piece such as an ice, a case or a dial based on crystallized alumina such as sapphire, corundum or ruby.
  • new manufacturing systems have been developed to adapt for example to timepiece displays that are not centered relative to its housing.
  • the housing may be substantially water drop-shaped and / or non-planar requiring for the harmony of the timepiece to be provided with an off-center display.
  • a manufacturing system 1 has been developed in order to produce trim parts 3 comprising surfaces whose curvatures C 1 , C 2 are concave.
  • the manufacturing system 1 comprises a fixing device 5 and a machining device 7.
  • the fixing device 5 comprises a drum 11 rotatably mounted along a first axis A 1 and carrying at least one blank 3 'of the future part 3.
  • the drum 11 is a ring having a faceted internal wall, that is to say provided with successive planes P x .
  • each successive plane P x receives a blank 3 'which can be fixed, for example, by gluing.
  • the machining device 7 comprises abrasive means 13 which are rotatably mounted along a second axis A 2 and which are intended to machine each blank 3 '.
  • the abrasive means 13 are moved in the hollow of the drum 11 in the form of a ring.
  • the abrasive means 13 presented to the figure 1 are formed by a conventional grinding wheel, that is to say without any particular shape of its contact zone.
  • the abrasive means 13 may be different and, for example, take the form of a curved or conical shoe.
  • the machining device 7 comprises displacement means 15 of the second axis A 2 so that the latter is movably mounted in a curved director C 2 to selectively form a second curvature to each blank 3 '. It is therefore clear that the manufacturing system 1 makes it possible to form first and second curvatures C 1 , C 2 concave.
  • the displacement means 15 may be, without limitation, formed by an actuator moved back and forth against the profile of a fixed cam corresponding to the second curvature C 2 or, for example, a controller programmed to move along said second curvature.
  • the first curvature C 1 is generated perpendicularly to the axis A 1 by the radius extending between the axis A 1 and the contact zone between the abrasive means 13 and each blank 3 '. Because the drum 11 is rotated along the axis A 1 , each blank 3 'is thus transversely excavated along a single radius forming the first curvature C 1 concave.
  • the second curvature C 2 is directly obtained by the selective displacement of the second axis A 2 .
  • the contact area between the abrasive means 13 and each blank 3 ' is progressively displaced with respect to the thickness of the ring-shaped drum 11. Therefore, each blank 3 'is hollowed longitudinally along a curved director forming the second curvature C 2 concave.
  • the director curve of the displacement means 15 may be symmetrical or not to form the second curvature C 2 in one or more rays.
  • first axis A 1 and the second axis A 2 are perpendicular in order to cross the machining lines. This feature advantageously facilitates the subsequent polishing of the trim pieces 3.
  • a manufacturing system 21 has been developed in order to produce trim parts 23 comprising surfaces whose curvatures C 3 , C 4 are convex.
  • the manufacturing system 21 comprises a fixing device 25 and a machining device 27.
  • the fixing device 25 comprises a drum 31 rotatably mounted along a first axis A 3 and carrying at least one blank 23 'of the future part 23.
  • the drum 21 is a disk against the outer wall of which each blank 23 'is fixed, for example, by gluing.
  • the machining device 27 comprises abrasive means 33 which are rotatably mounted along a second axis A 4 and which are intended to machine each blank 23 '.
  • the abrasive means 33 are moved in front of the drum 31.
  • the abrasive means 33 shown in FIG. figure 2 are formed by a conventional grinding wheel, that is to say without any particular shape of its contact zone.
  • the abrasive means 33 may be different and, for example, take the form of a curved or conical shoe as will be explained below.
  • the machining device 27 comprises displacement means 35 of the second axis A 4 so that the latter is movably mounted in a curved director C 4 to selectively form a second curvature to each blank 23 '. It is thus clear that the manufacturing system 21 makes it possible to form first and second curvatures C 3 , C 4 which are convex.
  • the displacement means 35 may be, in a nonlimiting manner, formed by an actuator moved back and forth against the profile of a fixed cam corresponding to the second curvature C 4 or, for example, a controller programmed to move along said second curvature.
  • the first curvature C 3 is generated perpendicular to the axis A 3 by the radius extending between the axis A 3 and the contact zone between the abrasive means 33 and each blank 23 '. Because the drum 31 is rotated along the axis A 3 , each blank 23 'is thus transversely excavated along a single radius forming the first curvature C 3 convex.
  • the second curvature C 4 is directly obtained by the selective displacement of the second axis A 4 .
  • the contact area between the abrasive means 33 and each blank 23 ' is progressively displaced with respect to the thickness of the disk-shaped drum 31. Therefore, each blank 23 'is hollowed longitudinally along a curved director forming the second curvature C 4 convex.
  • the director curve of the displacement means 35 may be symmetrical or not to form the second curvature C 4 in one or more rays.
  • the first axis A 3 and the second axis A 4 are perpendicular in order to cross the machining lines.
  • This feature advantageously facilitates the subsequent polishing of the covering parts 23.
  • the polishing may for example be carried out using fastening and machining device close to the fastening devices 25 and machining 27 realizing the outline of the parts 23 explained above.
  • a polishing step is less aggressive as to the thickness to be removed, only the abrasive means are mainly modified.
  • a manufacturing system 41 has been developed in order to polish parts 43 covering having surfaces whose curvatures C 3 , C 4 are convex.
  • the manufacturing system 41 comprises a fixing device 45 and a machining device 47.
  • the fixing device 45 comprises a rotatably mounted drum 51 which carries at least one piece 43 to be polished.
  • the machining device 47 comprises abrasive means 53 rotatably mounted and intended to polish each piece 43.
  • the abrasive means 53 are moved in front of the drum 51.
  • the abrasive means 53 presented in FIG. figure 3 are preferably formed by a conical shoe, for example of metal, regularly coated with a polishing liquid. Of course, other types of abrasive means such as substantially flat shape may also be suitable.
  • the machining device 47 comprises displacement and plating means 55 in order to force the friction of the abrasive means 53 against each piece 43 for the purpose of selectively polishing them according to the second curvature C 4 . It is therefore clear that the manufacturing system 41 makes it possible to polish first and second curvatures C 3 , C 4 which are convex.
  • the displacement means 55 may be, without limitation, formed by an actuator moved back and forth against the profile of a fixed cam corresponding to the second curvature C 4 or, for example, a controller programmed to move along said second curvature.
  • a manufacturing system 61 has been developed for polishing trim parts 63 having surfaces whose curvatures C 3 , C 4 are convex.
  • the manufacturing system 61 comprises a fixing device 65 and a machining device 67.
  • the attachment device 65 comprises a rotatably mounted drum 71 which carries at least one workpiece 63 to be polished.
  • the machining device 67 comprises abrasive means 73 intended to polish each piece 63.
  • the abrasive means 73 are moved in front of the drum 71.
  • the abrasive means 73 presented in FIG. figure 4 are preferably formed by a curved shoe, for example of metal, regularly coated with a polishing liquid.
  • the machining device 67 comprises displacement and plating means 75 in order to force the friction of the abrasive means 73 against each piece 63 for the purpose of selectively polishing them according to the second curvature C 4 . It is therefore clear that the manufacturing system 61 makes it possible to polish first and second curvatures C 3 , C 4 convex.
  • the displacement means 75 may be, without limitation, formed by an actuator moved back and forth against the profile of a fixed cam corresponding to the second curvature C 4 or, for example, a controller programmed to move along said second curvature.
  • first and second embodiments and their variants can be used alone or in combination. Therefore, a wide variety of dressing part can be obtained in particular that its upper surface and / or its lower surface are machined. It is therefore understood that advantageously according to the invention, at least one of the upper and lower faces may comprise a longitudinal curvature and a transverse curvature which are different.
  • each piece 3 ', 23', 43, 63 may be symmetrical or asymmetrical. It is therefore understood that such a non-symmetrical cladding piece can perfectly form an ice, a case or a dial based on crystallized alumina such as sapphire, corundum or ruby for, for example, a timepiece.
  • the covering part 83 has an upper surface 82 and a lower surface 84 which are machined in order to obtain a substantially constant thickness e 1 despite the complex shape of the part 83.
  • the figure 5 is a representation, seen from above, of the piece 83 substantially ovoid.
  • the longitudinal curvature C 4 intersects the transverse curvature C 3 at the point O 1 .
  • the point O 1 is not centered with respect to the substantially ovoid shape but is closer to the flared portion than the tip.
  • the piece 83 is very curved and allows, for example, to form a glass that appears visually asymmetrical to adapt for example to timepiece displays that are not centered relative to its housing.
  • the covering part 103 comprises an upper surface 102 and a lower surface 104 of which only the upper face is machined so as to obtain a substantially constant thickness e 2 on its edges despite the complex shape of the part 103.
  • the figure 9 is a perspective representation of the substantially ovoid piece 103.
  • the longitudinal curvature C 4 intersects the transverse curvature C 3 at the point O 2 .
  • the point O 2 is not centered with respect to the substantially ovoid shape but is closer to the flared portion than the tip.
  • the curvature C 4 is asymmetrical.
  • the curvature C 3 forms a single radius R 3 and that the curvature C 4 forms two adjacent radii R 4 and R ' 4 .
  • the radius R 4 between the edge of the flared portion and the point O 2 is greater than the radius R ' 4 between the edge of the tip and the point O 2 .
  • the piece 103 is complex and allows, for example, to form an asymmetrical ice to adapt for example to timepiece displays that are not centered relative to its housing.
  • the maximum thickness e 3 of the piece 103 is located vertically above the imaginary point O 2 and the minimum thickness e 2 all around the edge of the piece 103.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Adornments (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (13)

  1. System (1, 21, 41, 61) für die Herstellung eines Verkleidungsteils (3, 23, 43, 63, 83, 103) für ein Zeitmessgerät, das eine Befestigungsvorrichtung (5, 25, 45, 65) mit einer um eine erste Achse (A1, A3) drehbar montierten Trommel (11, 31, 51, 71), die wenigstens einen Rohling (3', 23') des Teils trägt, und eine Bearbeitungsvorrichtung (7, 27, 47, 67), die Schleifmittel (13, 33, 53, 73) aufweist, die um eine zweite Achse (A2, A4) drehbar montiert sind und dazu bestimmt sind, den wenigstens einen Rohling zu bearbeiten, um eine erste Krümmung (C1, C3) zu bilden, umfasst, wobei die Bearbeitungsvorrichtung (7, 27, 47, 67) außerdem Mittel (15, 35, 55, 75) zum Verlagern der zweiten Achse (A2, A4) umfasst, damit diese Letztere beweglich längs einer gekrümmten Leitlinie montiert ist, um wahlweise eine zweite Krümmung (C2, C4) an dem wenigstens einen Rohling zu bilden, dadurch gekennzeichnet, dass die erste Achse (A1, A3) und die zweite Achse (A2, A4) zueinander senkrecht sind, um die Bearbeitungslinien zu kreuzen.
  2. System (1, 21, 41, 61) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Richtung der Verlagerungsmittel symmetrisch ist, um die zweite Krümmung mit einem einzigen Radius zu bilden.
  3. System (1, 21, 41, 61) nach Anspruch 1, dadurch gekennzeichnet, dass die Richtung der Verlagerungsmittel asymmetrisch ist, um die zweite Krümmung mit mehreren Radien zu bilden.
  4. System (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Trommel (11) ein Ring ist, an dessen Innenwand der wenigstens eine Rohling (3) befestigt ist, und dass die Schleifmittel (13) in die Aushöhlung des Rings verlagert werden, um eine erste und eine zweite konkave Krümmung (C1, C2) zu bilden.
  5. System (21, 41, 61) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Trommel (31, 51, 71) eine Scheibe ist, an deren Außenwand der wenigstens eine Rohling (23', 43, 63) befestigt ist, und dass die Schleifmittel (33, 53, 73) vor der Scheibe verlagert werden, um eine erste und eine zweite konvexe Krümmung (C3, C4) zu bilden.
  6. System (1, 21, 41, 61) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schleifmittel (13, 33, 53, 73) durch eine Schleifscheibe gebildet sind.
  7. System (1, 21, 41, 61) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verlagerungsmittel (15, 35, 55, 75) durch einen Aktor gebildet sind, der an dem Profil eines festen Nockens, das der zweiten Krümmung entspricht, hin und her verlagert wird.
  8. System (1, 21, 41, 61) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Verlagerungsmittel (15, 35, 55, 75) durch einen programmierten Automaten gebildet sind, damit sie sich längs der zweiten Krümmung verlagern.
  9. System (1, 21, 41, 61) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Teil anhand kristallisierten Aluminiumoxids gebildet ist.
  10. Verkleidungsteil (3, 23, 43, 63, 83, 103), das eine obere Oberfläche (82, 102) und eine untere Oberfläche (84, 104) aufweist, wobei wenigstens eine der Flächen (82, 84, 102, 104) eine longitudinale Krümmung (C2, C4) und eine transversale Krümmung (C1, C3), die verschieden sind, aufweist, dadurch gekennzeichnet, dass die longitudinale und/oder die transversale Krümmung (C1, C2, C3, C4) asymmetrisch sind.
  11. Teil (3, 23, 43, 63, 83, 103) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die untere und die obere Fläche (82, 84, 102, 104) eine longitudinale Krümmung (C2, C4) und eine transversale Krümmung (C1, C3), die verschieden sind, aufweisen.
  12. Teil (3, 23, 43, 63, 83, 103) nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass es anhand von kristallisiertem Aluminiumoxid gebildet ist.
  13. Zeitmessgerät, dadurch gekennzeichnet, dass es ein Verkleidungsteil (3, 23, 43, 63, 83, 103) nach einem der Ansprüche 10 bis 12 umfasst.
EP12705111.8A 2011-03-16 2012-02-17 Gehäuseteil für eine uhr und system zu seiner herstellung Active EP2686135B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12705111.8A EP2686135B1 (de) 2011-03-16 2012-02-17 Gehäuseteil für eine uhr und system zu seiner herstellung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11158456A EP2500134A1 (de) 2011-03-16 2011-03-16 Verkleidungsteil für eine Uhr, und sein Herstellungsverfahren
EP12705111.8A EP2686135B1 (de) 2011-03-16 2012-02-17 Gehäuseteil für eine uhr und system zu seiner herstellung
PCT/EP2012/052740 WO2012123214A1 (fr) 2011-03-16 2012-02-17 Pièce d'habillage pour une pièce d'horlogerie et son système de fabrication

Publications (2)

Publication Number Publication Date
EP2686135A1 EP2686135A1 (de) 2014-01-22
EP2686135B1 true EP2686135B1 (de) 2015-04-08

Family

ID=44343027

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11158456A Withdrawn EP2500134A1 (de) 2011-03-16 2011-03-16 Verkleidungsteil für eine Uhr, und sein Herstellungsverfahren
EP12705111.8A Active EP2686135B1 (de) 2011-03-16 2012-02-17 Gehäuseteil für eine uhr und system zu seiner herstellung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11158456A Withdrawn EP2500134A1 (de) 2011-03-16 2011-03-16 Verkleidungsteil für eine Uhr, und sein Herstellungsverfahren

Country Status (7)

Country Link
US (1) US9372474B2 (de)
EP (2) EP2500134A1 (de)
JP (1) JP5931094B2 (de)
CN (1) CN103442846B (de)
HK (1) HK1192195A1 (de)
RU (1) RU2590466C2 (de)
WO (1) WO2012123214A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109333178A (zh) * 2018-11-12 2019-02-15 上海交通大学 对称构型精密圆刀数控磨床及磨削方法

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EP2537633B1 (de) * 2011-06-24 2014-05-07 Comadur S.A. Bearbeitungssystem einer Abschrägung

Also Published As

Publication number Publication date
CN103442846A (zh) 2013-12-11
JP2014512974A (ja) 2014-05-29
CN103442846B (zh) 2016-06-22
RU2013146015A (ru) 2015-04-27
RU2590466C2 (ru) 2016-07-10
EP2686135A1 (de) 2014-01-22
US20130343165A1 (en) 2013-12-26
US9372474B2 (en) 2016-06-21
WO2012123214A1 (fr) 2012-09-20
HK1192195A1 (zh) 2014-08-15
JP5931094B2 (ja) 2016-06-08
EP2500134A1 (de) 2012-09-19

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