EP1645919A1 - Gewölbtes Uhrglas - Google Patents

Gewölbtes Uhrglas Download PDF

Info

Publication number
EP1645919A1
EP1645919A1 EP04405636A EP04405636A EP1645919A1 EP 1645919 A1 EP1645919 A1 EP 1645919A1 EP 04405636 A EP04405636 A EP 04405636A EP 04405636 A EP04405636 A EP 04405636A EP 1645919 A1 EP1645919 A1 EP 1645919A1
Authority
EP
European Patent Office
Prior art keywords
radius
curvature
face
ice
hours
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04405636A
Other languages
English (en)
French (fr)
Other versions
EP1645919B1 (de
Inventor
Kin Man Unit A & B 38F. Tower 18 Yeung
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.)
Fuji Crystal Manufactory Ltd
Original Assignee
Fuji Crystal Manufactory Ltd
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 Fuji Crystal Manufactory Ltd filed Critical Fuji Crystal Manufactory Ltd
Priority to EP20040405636 priority Critical patent/EP1645919B1/de
Publication of EP1645919A1 publication Critical patent/EP1645919A1/de
Priority to HK06110238A priority patent/HK1089822A1/xx
Application granted granted Critical
Publication of EP1645919B1 publication Critical patent/EP1645919B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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 the field of watchmaking. It relates, more particularly, a domed watch glass and the equipment used for its manufacture.
  • This type of ice is used to give a particular stamp to a watch.
  • the document EP 948 758 describes such an elongate ice, the lower face of which is flat and whose convex upper surface matches a torus segment, that is to say that it has two radii of curvature, the most large is the longest face.
  • This original characteristic makes it possible to obtain an edge whose thickness is substantially smaller and more constant than in the case of windows whose convex face is cylindrical or spherical, for the same thickness of material in the center.
  • the invention relates to a watch glass, characterized in that its convex upper face and its concave lower face each have, along the axis 12 o'clock-6 o'clock, a first radius of curvature and, according to the axis 3 hours-9 hours, a second radius of curvature.
  • the two radii of curvature of each face are such that the ice has a substantially constant thickness over its entire surface. It can have any desired shape, including oval or barrel.
  • the invention also relates to equipment for multi-piece or piece-by-piece machining of the convex and concave faces of such ice.
  • the watch glass shown in Figure 1a is barrel-shaped. Its side faces corresponding to 12 and 6 hours are flat, while its side faces corresponding to 3 and 9 hours are curved.
  • the ice of Figure 1b also barrel-shaped, differs from that of Figure 1a only in that its faces 12 and 6 o'clock are curved.
  • the convex upper face 10 is in the form of a torus segment, that is to say that it has, along the axis 12 o'clock-6 o'clock AA, a first radius of curvature RS1 and, along the axis 3 hours-9 hours BB, a second radius of curvature RS2.
  • the concave underside 12 On its side, the concave underside 12 also has the shape of a torus segment, that is to say that it has, along the axis 12 o'clock-6 o'clock AA, a first radius of curvature RI1 and along the axis 3 hours-9 hours BB, a second radius of curvature RI2.
  • the starting point for producing such a mirror is a transparent plate of elongated shape, which can be rectangular, barrel, oval or any other desired shape, and whose main faces are flat and parallel.
  • the wafer is a hard transparent crystalline mineral material, such as sapphire, spinel or ruby.
  • FIGS. 3a-3b schematically illustrate the equipment used to produce the convex upper face 10 respectively in the case of multi-piece machining and in the case of piece-to-piece machining.
  • a grinding machine comprising a rotary drum 14 on the periphery of which are fixed several plates 16 and whose radius Ra is determined by the thickness of the ice and its desired radius of curvature RS1 or RS2.
  • a circular grinding wheel 18 is brought by a carriage (not shown) in contact with the plates so as to progressively round their upper face 10 until the radius of curvature RS1 or RS2 is reached.
  • the process requires two steps using two drums 14 of different diameters.
  • the plates 16 are first oriented on the first drum so as to achieve the radius of curvature RS1 along the axis 12 hours-6 hours.
  • An annular grinding wheel 20 is used whose inner radius Rb is equal to the desired radius RS1 or RS2.
  • the plate 16 is fixed on a support 22 which, with the aid of a carriage (not shown), brings it into contact with the inner face of the grinding wheel so as to progressively round off its upper surface 10 until the radius of curvature RS1 or RS2 is reached.
  • the process also requires two steps using two wheels 20 of different radii.
  • the plates 16 are first oriented on the first grinding wheel to achieve the curvature radius RS1 along the axis 12 hours-6 hours. They are then oriented on the second grinding wheel to achieve the curvature radius RS2 along the axis 3 hours-9 hours.
  • FIGS. 4a-4b schematically illustrate the equipment used to then make the concave lower face 12 respectively in the case of multi-piece machining and in the case of piece-to-piece machining.
  • the plates 16 are fixed, by their convex upper face 10 already machined, on the inner wall of an annular drum 24 whose radius Rc is that of this face, RS1 or RS2.
  • a circular grinding wheel 26 is brought by a carriage (not shown) in contact with the plates so as to gradually round their lower face 12 until the radius of curvature RI1 or RI2 is reached.
  • the process always requires two steps using two drums 24 of different diameters.
  • the plates 16 are first oriented on the first drum to achieve the curvature of radius RI1 along the axis 12 hours to 6 hours.
  • a circular grinding wheel 28 is used whose radius Rd is that of the desired concave lower face 12, either RI1 or RI2.
  • the plate 16 is fixed, by its convex face 10 already machined, on a support 30 which, with the aid of a carriage (not shown), brings it into contact with the grinding wheel so as to round its lower face 12 until the radius of curvature RI1 or RI2 is reached.
  • the process also requires two steps using two wheels 28 of different radii.
  • the wafer 16 is first oriented on the first grinding wheel to achieve the radius curvature RI1 along the 12 o'clock-6 o'clock axis. It is then oriented on the second grinding wheel to achieve the curvature radius RI2 along the axis 3 hours-9 hours.
  • the machining operation is performed using numerically controlled (CNC) installations. It is always followed, of course, an ice polishing operation, performed in a similar manner, the grinding tools being replaced by polishing tools, as known to those skilled in the art.
  • CNC numerically controlled
  • the ice according to the invention can not only have any desired aesthetic effect, but it also offers, between it and the dial of the watch, a space for housing the needles.
  • the aesthetic effect provided by the bending is thus reinforced by the fact that the watch can therefore be substantially thinner.
  • this double bending of the ice makes it possible to avoid a magnifying effect, which is not very desirable.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP20040405636 2004-10-11 2004-10-11 Gewölbtes Uhrglas Not-in-force EP1645919B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20040405636 EP1645919B1 (de) 2004-10-11 2004-10-11 Gewölbtes Uhrglas
HK06110238A HK1089822A1 (en) 2004-10-11 2006-09-15 Cambered watch crystal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040405636 EP1645919B1 (de) 2004-10-11 2004-10-11 Gewölbtes Uhrglas

Publications (2)

Publication Number Publication Date
EP1645919A1 true EP1645919A1 (de) 2006-04-12
EP1645919B1 EP1645919B1 (de) 2007-12-19

Family

ID=34932314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040405636 Not-in-force EP1645919B1 (de) 2004-10-11 2004-10-11 Gewölbtes Uhrglas

Country Status (2)

Country Link
EP (1) EP1645919B1 (de)
HK (1) HK1089822A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228694A1 (de) * 2009-03-12 2010-09-15 Stettler Sapphire AG Verfahren und Vorrichtung zum Schleifen von Uhrengläsern
CN101488006B (zh) * 2008-05-13 2012-07-11 张和国 一种呈四面拱状玻璃的制备方法和应用
EP2500135A1 (de) * 2011-03-16 2012-09-19 Comadur S.A. Poliersystem für ein Verkleidungsteil einer Uhr
CH708661A1 (fr) * 2013-10-04 2015-04-15 Cartier Création Studio Sa Système profilaire à géométrie alternée pour pièce d'horlogerie.
EP3971253A1 (de) * 2020-09-18 2022-03-23 Precitrame Machines SA Verfahren zur bearbeitung eines mechanischen werkstücks

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH38606A (fr) * 1906-12-26 1907-11-15 E Jornod Machine è travailler les verres de montres
GB365499A (en) * 1930-10-29 1932-01-21 Ernest Morf Manufacturing process for watch glasses made of transparent elastic material
GB371451A (en) * 1930-01-24 1932-04-25 Bakelite Corp Improvements in or relating to watch glasses
US2228670A (en) * 1939-01-14 1941-01-14 Walter L Mulerone Bezel construction for timepieces and the like
CH220796A (fr) * 1941-02-21 1942-04-30 Schmitz Werner Montre de forme à boîte étanche.
EP0443366A1 (de) * 1990-02-16 1991-08-28 Montres Rado S.A. Uhrengehäuse mit zwei fugendichten Schalen
WO1998015876A1 (fr) * 1996-10-04 1998-04-16 Hans Stettler Ag Glace de montre

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH38606A (fr) * 1906-12-26 1907-11-15 E Jornod Machine è travailler les verres de montres
GB371451A (en) * 1930-01-24 1932-04-25 Bakelite Corp Improvements in or relating to watch glasses
GB365499A (en) * 1930-10-29 1932-01-21 Ernest Morf Manufacturing process for watch glasses made of transparent elastic material
US2228670A (en) * 1939-01-14 1941-01-14 Walter L Mulerone Bezel construction for timepieces and the like
CH220796A (fr) * 1941-02-21 1942-04-30 Schmitz Werner Montre de forme à boîte étanche.
EP0443366A1 (de) * 1990-02-16 1991-08-28 Montres Rado S.A. Uhrengehäuse mit zwei fugendichten Schalen
WO1998015876A1 (fr) * 1996-10-04 1998-04-16 Hans Stettler Ag Glace de montre

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101488006B (zh) * 2008-05-13 2012-07-11 张和国 一种呈四面拱状玻璃的制备方法和应用
EP2228694A1 (de) * 2009-03-12 2010-09-15 Stettler Sapphire AG Verfahren und Vorrichtung zum Schleifen von Uhrengläsern
WO2010102909A1 (de) * 2009-03-12 2010-09-16 Stettler Sapphire Ag Verfahren und vorrichtung zum schleifen von uhrengläsern
EP2500135A1 (de) * 2011-03-16 2012-09-19 Comadur S.A. Poliersystem für ein Verkleidungsteil einer Uhr
WO2012123215A1 (fr) * 2011-03-16 2012-09-20 Comadur S.A. Système de polissage d'une pièce d'habillage pour une pièce d'horlogerie
US9914195B2 (en) 2011-03-16 2018-03-13 Comadur S.A. System of polishing external pieces for a timepiece
CH708661A1 (fr) * 2013-10-04 2015-04-15 Cartier Création Studio Sa Système profilaire à géométrie alternée pour pièce d'horlogerie.
EP3971253A1 (de) * 2020-09-18 2022-03-23 Precitrame Machines SA Verfahren zur bearbeitung eines mechanischen werkstücks

Also Published As

Publication number Publication date
HK1089822A1 (en) 2006-12-08
EP1645919B1 (de) 2007-12-19

Similar Documents

Publication Publication Date Title
EP2380864A1 (de) Keramikelement mit mindestens einem Metalldekoreinsatz
CH710682B1 (fr) Eléments décoratifs mobiles.
EP1645919B1 (de) Gewölbtes Uhrglas
EP0860732B1 (de) Verfahren zur Herstellung elektrooptischer Zellen, insbesondere mit Flüssigkristallen, oder photovoltaischer elektrochemischer Zellen
CH705861A2 (fr) Palier antichoc pour pièce d'horlogerie.
EP0216223B1 (de) Mittelteilwerkplatte für eine Uhr, Verfahren zur Herstellung dieser Mittelteilwerkplatte und eine mit einer solchen Mittelteilwerkplatte ausgerüstete Uhr
EP2784600A2 (de) Herstellungsverfahren eines mikromechanischen Bauteils, das im wesentlichen eben ist, und mikromechanisches Bauteil, das mindestens einen Teil aus Siliziumoxid umfasst
EP2502877B1 (de) Verfahren zur Herstellung eines Verbundwerkstoffteils, insbesondere für Uhrwerk
EP3537225B1 (de) Herstellungsverfahren einer diamantenpolierten applique für uhr
CH712210A2 (fr) Procédé de fabrication d'un composant d'affichage d'horlogerie.
EP2686135B1 (de) Gehäuseteil für eine uhr und system zu seiner herstellung
EP1909148B1 (de) Vorrichtung mit drehbarem Außenring für eine Uhr
EP0082119B1 (de) Armbanduhrmittelteil und Herstellungsverfahren
EP0948758B1 (de) Uhrenglas sowie verfahren zu dessen herstellung
EP0854403B1 (de) Durchsichtiges und kratzfestes Uhrenglas und ein mit diesem Glas versehenes Uhrengehäuse
CH704655A2 (fr) Pièce d'habillage pour une pièce d'horlogerie et son système de fabrication.
CH712519B1 (fr) Organe moteur pour pièce d'horlogerie.
CH711462B1 (fr) Système pour pièce d'horlogerie à index pivotant et montre comprenant un tel système.
CH703155B1 (fr) Elément céramique incrusté d'au moins un décor métallique.
EP4224259A1 (de) Komponente zur verkleidung einer uhr oder eines schmuck- oder juwelierartikels und verfahren zur herstellung einer solchen verkleidungskomponente
FR3089437A1 (fr) Procédé de fabrication d’une pièce optique et afficheur tête haute comportant une telle pièce
CH711740A2 (fr) Procédé de fabrication d'une pièce à base de silicium avec au moins un motif à illusion d'optique.
EP2686134B1 (de) Poliersystem für ein teil eines uhrengehäuses
CH719401A2 (fr) Composant d'habillage pour une montre ou un article de bijouterie ou de joaillerie et procédé de fabrication d'un tel composant d'habillage
CH720050A2 (fr) Montre adaptée à générer une animation séquentielle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20060823

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1089822

Country of ref document: HK

AKX Designation fees paid

Designated state(s): CH FR GB LI

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 20070212

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR GB LI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20080310

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1089822

Country of ref document: HK

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: GLN GRESSET & LAESSER NEUCHATEL CABINET DE CONSEIL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080922

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: FUJI CRYSTAL MANUFACTORY LTD., CN

Free format text: FORMER OWNER: FUJI CRYSTAL MANUFACTORY LTD., CN

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20121107

Year of fee payment: 9

Ref country code: CH

Payment date: 20121025

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20121025

Year of fee payment: 9

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131011

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131011

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031