EP2686135B1 - Piece of casing for a time piece and system for manufacturing same - Google Patents
Piece of casing for a time piece and system for manufacturing same Download PDFInfo
- 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.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 238000003754 machining Methods 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 description 17
- 238000005498 polishing Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 241001417494 Sciaenidae Species 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 235000015243 ice cream Nutrition 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 239000010979 ruby Substances 0.000 description 2
- 229910001750 ruby Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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)
- Adornments (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
L'invention se rapporte à une pièce d'habillage pour une pièce d'horlogerie et son système de fabrication.The invention relates to a dressing part for a timepiece and its manufacturing system.
Il est connu de former des glaces de montre en saphir qui sont très résistantes aux rayures. De telles glaces sont généralement fabriquées par la mise en contact d'une meule rotative contre la surface d'un tambour supportant plusieurs glaces. Le meulage résultant permet de former une glace cylindrique ou sphérique. Toutefois, il devient nécessaire de former des glaces asymétriques pour s'adapter par exemple à des affichages de pièce d'horlogerie qui ne sont pas centrés par rapport à son boîtier ce qui n'est pas possible à partir des techniques actuelles de fabrication en série. Le document
Le but de la présente invention est de pallier tout ou partie les inconvénients cités précédemment en proposant un nouveau système de fabrication autorisant la fabrication en série de glaces spéciales dont les courbures longitudinales sont indépendantes des courbures transversales.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.
A cet effet, l'invention se rapporte à un système de fabrication d'une pièce d'habillage pour une pièce d'horlogerie comportant un dispositif de fixation comprenant un tambour monté à rotation selon un premier axe et portant au moins une ébauche de ladite pièce, un dispositif d'usinage comportant des moyens abrasifs montés à rotation selon un deuxième axe et destinés à usiner ladite au moins une ébauche afin de former une première courbure caractérisé en ce que le dispositif d'usinage comporte en outre des moyens de déplacement dudit deuxième axe afin que ce dernier soit monté mobile selon une directrice courbe pour former sélectivement une deuxième courbure à ladite au moins une ébauche et en ce que ledit premier axe et ledit deuxième axe sont perpendiculaires afin de croiser les raies d'usinage.For this purpose, 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.
On comprend donc qu'au moins une des courbures de la pièce d'habillage est directement formée par le déplacement sélectif, c'est-à-dire totalement libre et maîtrisé, de l'axe de rotation des moyens abrasifs. Par conséquent, il devient possible de fabriquer des glaces très complexes en série avec un taux de rebut avantageux tout en facilitant une étape postérieure de polissage.It is therefore clear that at least one of the curvatures of the dressing part is directly formed by the selective displacement, that is to say completely free and controlled, of the axis of rotation of the abrasive means. As a result, it becomes possible to manufacture very complex ice creams in series with an advantageous scrap rate while facilitating a subsequent polishing step.
Conformément à d'autres caractéristiques avantageuses de l'invention :
- la directrice des moyens de déplacement est symétrique afin de former ladite deuxième courbure selon un rayon unique ;
- la directrice des moyens de déplacement est asymétrique afin de former ladite deuxième courbure selon plusieurs rayons ;
- selon un premier mode de réalisation, le tambour est un anneau contre la paroi interne duquel ladite au moins une ébauche est fixée et en ce que les moyens abrasifs sont déplacés dans le creux dudit anneau afin de former des première et deuxième courbures concaves ;
- selon un deuxième mode de réalisation, le tambour est un disque contre la paroi externe duquel ladite au moins une ébauche est fixée et en ce que les moyens abrasifs sont déplacés devant ledit disque afin de former des première et deuxième courbures convexes ;
- les moyens abrasifs sont formés par une meule ;
- selon une première variante, les moyens de déplacement sont formés par un actionneur déplacé en va-et-vient contre le profil d'une came fixe correspondant à ladite deuxième courbure ;
- selon une deuxième variante, les moyens de déplacement sont formés par un automate programmé pour se déplacer selon ladite deuxième courbure ;
- ladite pièce est formée à partir d'alumine cristallisée.
- the director of the displacement means is symmetrical to form said second curvature in a single radius;
- the director of the displacement means is asymmetrical so as to form said second curvature according to several radii;
- according to a first embodiment, the drum is a ring against the inner wall of which said at least one blank is fixed and in that the abrasive means are moved in the hollow of said ring to form first and second concave curvatures;
- according to a second embodiment, the drum is a disk against the outer wall of which said at least one blank is fixed and in that the abrasive means are moved in front of said disk to form first and second convex curvatures;
- the abrasive means are formed by a grinding wheel;
- according to a first variant, the displacement means are formed by an actuator moved back and forth against the profile of a fixed cam corresponding to said second curvature;
- according to a second variant, the displacement means are formed by an automaton programmed to move along said second curvature;
- said piece is formed from crystallized alumina.
De plus, l'invention se rapporte à une pièce d'habillage comportant une surface supérieure et une surface inférieure caractérisée en ce qu'au moins une des faces comporte une courbure longitudinale et une courbure transversale qui sont différentes et en ce que au moins l'une desdites courbures longitudinale et transversale est asymétrique.In addition, 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.
On comprend donc que la pièce d'habillage peut être complexe et permette, par exemple, de former une glace asymétrique ou dont le galbe apparaît visuellement asymétrique pour s'adapter par exemple à des affichages de pièce d'horlogerie qui ne sont pas centrés par rapport à son boîtier.It is therefore understood that 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.
Conformément à d'autres caractéristiques avantageuses de l'invention :
- les faces inférieure et supérieure comportent une courbure longitudinale et une courbure transversale qui sont différentes ;
- la pièce d'habillage est formée à partir d'alumine cristallisée.
- the lower and upper faces have a longitudinal curvature and a transverse curvature which are different;
- the dressing part is formed from crystallized alumina.
Enfin, l'invention se rapporte à une pièce d'horlogerie caractérisée en ce qu'elle comporte une pièce d'habillage selon l'une des variantes précédentes.Finally, the invention relates to a timepiece characterized in that it comprises a dressing part according to one of the previous variants.
D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :
- la
figure 1 est une vue d'un système de fabrication selon un premier mode de réalisation de l'invention ; - les
figures 2 à 4 sont des vues d'un système de fabrication selon un deuxième mode de réalisation de l'invention ; - les
figures 5 à 7 sont des représentations d'une pièce d'habillage selon une première variante de l'invention ; - les
figures 8 à 10 sont des représentations d'une pièce d'habillage selon une deuxième variante de l'invention.
- the
figure 1 is a view of a manufacturing system according to a first embodiment of the invention; - the
Figures 2 to 4 are views of a manufacturing system according to a second embodiment of the invention; - the
Figures 5 to 7 are representations of a dressing part according to a first variant of the invention; - the
Figures 8 to 10 are representations of a dressing part according to a second variant of the invention.
L'invention se rapporte à une pièce d'habillage non symétrique comme une glace, un boîtier ou un cadran à base d'alumine cristallisée comme du saphir, du corindon ou du rubis. Pour réaliser ces nouvelles pièces, de nouveaux systèmes de fabrication ont été développés pour s'adapter par exemple à des affichages de pièce d'horlogerie qui ne sont pas centrés par rapport à son boîtier. A titre d'exemple, le boîtier peut être sensiblement en forme de goutte d'eau et/ou non plan nécessitant pour l'harmonie de la pièce d'horlogerie d'être pourvu d'un affichage décentré.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. To achieve these new parts, new manufacturing systems have been developed to adapt for example to timepiece displays that are not centered relative to its housing. For example, 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.
Bien entendu, même si la présente invention a été développée pour le domaine de l'horlogerie, elle ne saurait s'y limiter. D'autres applications sont également envisageables comme dans l'optique, les arts de la table ou l'électronique.Of course, even if the present invention has been developed for the field of watchmaking, it can not be limited thereto. Other applications are also conceivable, such as optics, tableware or electronics.
Selon un premier mode de réalisation illustré à la
Le dispositif de fixation 5 comprend un tambour 11 monté à rotation selon un premier axe A1 et portant au moins une ébauche 3' de la future pièce 3. Préférentiellement, comme visible à la
Le dispositif d'usinage 7 comporte des moyens abrasifs 13 qui sont montés à rotation selon un deuxième axe A2 et qui sont destinés à usiner chaque ébauche 3'. Préférentiellement, les moyens abrasifs 13 sont déplacés dans le creux du tambour 11 en forme d'anneau. Les moyens abrasifs 13 présentés à la
Avantageusement selon l'invention, le dispositif d'usinage 7 comporte des moyens de déplacement 15 du deuxième axe A2 afin que ce dernier soit monté mobile selon une directrice courbe C2 pour former sélectivement une deuxième courbure à chaque ébauche 3'. On comprend donc que le système de fabrication 1 permet de former des première et deuxième courbures C1, C2 concaves.Advantageously according to the invention, the
Selon l'invention, les moyens de déplacement 15 peuvent être, de manière non limitative, formés par un actionneur déplacé en va-et-vient contre le profil d'une came fixe correspondant à la deuxième courbure C2 ou, par exemple, un automate programmé pour se déplacer selon ladite deuxième courbure.According to the invention, 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.
Ainsi, la première courbure C1 est générée perpendiculairement à l'axe A1 par le rayon s'étendant entre l'axe A1 et la zone de contact entre les moyens abrasifs 13 et chaque ébauche 3'. Du fait que le tambour 11 est déplacé à rotation selon l'axe A1, chaque ébauche 3' est donc creusée transversalement selon un rayon unique formant la première courbure C1 concave.Thus, 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
De plus, avantageusement selon l'invention, la deuxième courbure C2 est directement obtenue par le déplacement sélectif du deuxième axe A2. Ainsi, pendant que la première courbure C1 est générée, la zone de contact entre les moyens abrasifs 13 et chaque ébauche 3' est progressivement déplacée par rapport à l'épaisseur du tambour 11 en forme d'anneau. Par conséquent, chaque ébauche 3' est creusée longitudinalement selon une directrice courbe formant la deuxième courbure C2 concave.In addition, advantageously according to the invention, the second curvature C 2 is directly obtained by the selective displacement of the second axis A 2 . Thus, while the first curvature C 1 is generated, the contact area between the abrasive means 13 and each blank 3 'is progressively displaced with respect to the thickness of the ring-shaped
On comprend donc immédiatement que la directrice courbe des moyens de déplacement 15 peut être symétrique ou non afin de former la deuxième courbure C2 selon un ou plusieurs rayons.It is therefore immediately understood that 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.
Enfin, préférentiellement selon l'invention, le premier axe A1 et le deuxième axe A2 sont perpendiculaires afin de croiser les raies d'usinage. Cette caractéristique permet avantageusement de faciliter le polissage postérieur des pièces d'habillage 3.Finally, preferentially according to the invention, the 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
Selon un deuxième mode de réalisation illustré aux
Le dispositif de fixation 25 comprend un tambour 31 monté à rotation selon un premier axe A3 et portant au moins une ébauche 23' de la future pièce 23. Préférentiellement, comme visible à la
Le dispositif d'usinage 27 comporte des moyens abrasifs 33 qui sont montés à rotation selon un deuxième axe A4 et qui sont destinés à usiner chaque ébauche 23'. Préférentiellement, les moyens abrasifs 33 sont déplacés devant le tambour 31. Les moyens abrasifs 33 présentés à la
Avantageusement selon l'invention, le dispositif d'usinage 27 comporte des moyens de déplacement 35 du deuxième axe A4 afin que ce dernier soit monté mobile selon une directrice courbe C4 pour former sélectivement une deuxième courbure à chaque ébauche 23'. On comprend donc que le système de fabrication 21 permet de former des première et deuxième courbures C3, C4 convexes.Advantageously according to the invention, the
Selon l'invention, les moyens de déplacement 35 peuvent être, de manière non limitative, formés par un actionneur déplacé en va-et-vient contre le profil d'une came fixe correspondant à la deuxième courbure C4 ou, par exemple, un automate programmé pour se déplacer selon ladite deuxième courbure.According to the invention, 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.
Ainsi, la première courbure C3 est générée perpendiculairement à l'axe A3 par le rayon s'étendant entre l'axe A3 et la zone de contact entre les moyens abrasifs 33 et chaque ébauche 23'. Du fait que le tambour 31 est déplacé à rotation selon l'axe A3, chaque ébauche 23' est donc creusée transversalement selon un rayon unique formant la première courbure C3 convexe.Thus, 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
De plus, avantageusement selon l'invention, la deuxième courbure C4 est directement obtenue par le déplacement sélectif du deuxième axe A4. Ainsi, pendant que la première courbure C3 est générée, la zone de contact entre les moyens abrasifs 33 et chaque ébauche 23' est progressivement déplacée par rapport à l'épaisseur du tambour 31 en forme de disque. Par conséquent, chaque ébauche 23' est creusée longitudinalement selon une directrice courbe formant la deuxième courbure C4 convexe.In addition, advantageously according to the invention, the second curvature C 4 is directly obtained by the selective displacement of the second axis A 4 . Thus, while the first curvature C 3 is generated, the contact area between the abrasive means 33 and each blank 23 'is progressively displaced with respect to the thickness of the disk-shaped
On comprend donc immédiatement que la directrice courbe des moyens de déplacement 35 peut être symétrique ou non afin de former la deuxième courbure C4 selon un ou plusieurs rayons.It is therefore immediately understood that 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.
Enfin, préférentiellement selon l'invention, le premier axe A3 et le deuxième axe A4 sont perpendiculaires afin de croiser les raies d'usinage. Cette caractéristique permet avantageusement de faciliter le polissage postérieur des pièces d'habillage 23. Le polissage peut à titre d'exemple être effectué à l'aide de dispositif de fixation et d'usinage proche des dispositifs de fixation 25 et d'usinage 27 réalisant l'ébauche des pièce 23 expliqués ci-dessus. Toutefois, une étape de polissage étant moins agressive quant à l'épaisseur à retirer, seuls les moyens abrasifs sont principalement modifiés.Finally, preferably according to the invention, 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
Ainsi, deux exemples de polissage sont présentés aux
Le dispositif de fixation 45 comprend un tambour 51 monté à rotation qui porte au moins une pièce 43 à polir. Le dispositif d'usinage 47 comporte des moyens abrasifs 53 montés à rotation et destinés à polir chaque pièce 43. Préférentiellement, les moyens abrasifs 53 sont déplacés devant le tambour 51. Les moyens abrasifs 53 présentés à la
Avantageusement selon l'invention, le dispositif d'usinage 47 comporte des moyens de déplacement et de placage 55 afin de forcer le frottement des moyens abrasifs 53 contre chaque pièce 43 dans le but de les polir sélectivement selon la deuxième courbure C4. On comprend donc que le système de fabrication 41 permet de polir des première et deuxième courbures C3, C4 convexes.Advantageously according to the invention, the
Selon l'invention, les moyens de déplacement 55 peuvent être, de manière non limitative, formés par un actionneur déplacé en va-et-vient contre le profil d'une came fixe correspondant à la deuxième courbure C4 ou, par exemple, un automate programmé pour se déplacer selon ladite deuxième courbure.According to the invention, 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.
Selon une deuxième alternative du deuxième mode de réalisation illustré à la
Le dispositif de fixation 65 comprend un tambour 71 monté à rotation qui porte au moins une pièce 63 à polir. Le dispositif d'usinage 67 comporte des moyens abrasifs 73 destinés à polir chaque pièce 63. Préférentiellement, les moyens abrasifs 73 sont déplacés devant le tambour 71. Les moyens abrasifs 73 présentés à la
Avantageusement selon l'invention, le dispositif d'usinage 67 comporte des moyens de déplacement et de placage 75 afin de forcer le frottement des moyens abrasifs 73 contre chaque pièce 63 dans le but de les polir sélectivement selon la deuxième courbure C4. On comprend donc que le système de fabrication 61 permet de polir des première et deuxième courbures C3, C4 convexes.Advantageously according to the invention, the
Selon l'invention, les moyens de déplacement 75 peuvent être, de manière non limitative, formés par un actionneur déplacé en va-et-vient contre le profil d'une came fixe correspondant à la deuxième courbure C4 ou, par exemple, un automate programmé pour se déplacer selon ladite deuxième courbure.According to the invention, 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.
Ces premier et deuxième modes de réalisation ainsi que leur variantes peuvent être utilisés seuls ou en combinaison. Par conséquent, une grande variété de la pièce d'habillage peut être obtenue suivant notamment que sa surface supérieure et/ou sa surface inférieure sont usinées. On comprend donc toutefois qu'avantageusement selon l'invention, au moins une des faces supérieure et inférieure peut comporter une courbure longitudinale et une courbure transversale qui sont différentes.These 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.
De plus, suivant l'orientation de chaque pièce 3', 23', 43, 63 par rapport aux dispositifs de fixation 5, 25, 45, 65, au moins l'une desdites courbures longitudinale et transversale peut être symétrique ou asymétrique. On comprend donc qu'une telle pièce d'habillage non symétrique peut parfaitement former une glace, un boîtier ou un cadran à base d'alumine cristallisée comme du saphir, du corindon ou du rubis pour, par exemple, une pièce d'horlogerie.In addition, depending on the orientation of each
Deux variantes de pièces 83, 103 formant des glaces de pièce d'horlogerie réalisables selon l'invention sont présentées aux
Ainsi, la
Comme visible à la
De manière analogue, comme visible à la
Par conséquent, la pièce 83 est très galbée et permet, par exemple, de former une glace qui paraît visuellement asymétrique pour s'adapter par exemple à des affichages de pièce d'horlogerie qui ne sont pas centrés par rapport à son boîtier.Therefore, the
Selon la deuxième variante, la pièce d'habillage 103 comporte une surface supérieure 102 et une surface inférieure 104 dont seules la face supérieure est usinée afin d'obtenir une épaisseur sensiblement constante e2 sur ses bords malgré la forme complexe de la pièce 103.According to the second variant, the covering
Ainsi, la
Comme visible à la
Par conséquent, la pièce 103 est complexe et permet, par exemple, de former une glace asymétrique pour s'adapter par exemple à des affichages de pièce d'horlogerie qui ne sont pas centrés par rapport à son boîtier. A ce titre, l'épaisseur maximale e3 de la pièce 103 est située à l'aplomb du point fictif O2 et l'épaisseur minimale e2 tout autour du bord de la pièce 103.Therefore, the
Bien entendu, la présente invention ne se limite pas à l'exemple illustré.
L'étendue de l'invention est définie par le jeu de revendications ci-jointes.Of course, the present invention is not limited to the illustrated example.
The scope of the invention is defined by the attached set of claims.
Claims (13)
- System of manufacturing (1, 21, 41, 61) an external piece (3, 23, 43, 63, 83, 103) for a timepiece comprising a securing device (5, 25, 45, 65) including a drum (11, 31, 51, 71), rotatably mounted along a first axis (A1, A3), and carrying at least one blank (3', 23') of said piece, a machining device (7, 27, 47, 67) comprising abrasive means (13, 33, 53, 73) rotatably mounted along a second axis (A2, A4) and intended to machine said at least one blank in order to form a first curvature (C1, C3), the machining device (7, 27, 47, 67) further including a means (15, 35, 55, 75) of moving said second axis (A2, A4) so that the device is movably mounted along a curved directrix to selectively form a second curvature (C2, C4) in said at least one blank and characterised in that said first axis (A1, A3) and said second axis (A2, A4) are perpendicular so that the machining lines intersect.
- System (1, 21, 41, 61) according to the preceding claim, characterized in that the directrix of the means of movement is symmetrical so as to form said second curvature on a single radius.
- System (1, 21, 41, 61) according to claim 1, characterized in that the directrix of the means of movement is symmetrical so as to form said second curvature on several radii.
- System (1) according to any of the preceding claims, characterized in that the drum (11) is a ring against the inner wall of which said at least one blank (3) is secured and in that the abrasive means (13) is moved in the hollow of said ring so as to form first and second concave curvatures (C1, C2).
- System (21, 41, 61) according to any of claims 1 to 3, characterized in that the drum (31, 51, 71) is a disc against the outer wall of which said at least one blank (23', 43, 63) is secured and in that the abrasive means (33, 53, 73) are moved in front of said disc so as to form first and second convex curvatures (C3, C4).
- System (1, 21, 41, 61) according to any of the preceding claims, characterized in that the abrasive means (13, 33, 53, 73) is formed by a grinding wheel.
- System (1, 21, 41, 61) according to any of the preceding claims, characterized in that the means of movement (15, 35, 55, 75) is formed by an actuator moved back-and-forth against the profile of a fixed cam corresponding to said second curvature.
- System (1, 21, 41, 61) according to any of claims 1 to 6, characterized in that the means of movement (15, 35, 55, 75) is formed by an automated device programmed to move along said second curvature.
- System (1, 21, 41, 61) according to any of the preceding claims, characterized in that said piece is formed from crystallised alumina.
- External piece (3, 23, 43, 63, 83, 103) comprising a top surface (82, 102) and a bottom surface (84, 104), at least one of the faces (82, 84, 102, 104) including a longitudinal curvature (C2, C4) and a transverse curvature (C1, C3) which are different and characterized in that at least one of said longitudinal and transverse curvatures (C1, C2, C3, C4) is asymmetrical.
- Piece (3, 23, 43, 63, 83, 103) according to the preceding claim, characterized in that the top and bottom surfaces (82, 84, 102, 104) comprise a longitudinal curvature (C2, C4) and a transverse curvature (C1, C3) which are different.
- Piece (3, 23, 43, 63, 83, 103) according to claim 10 or 11, characterized in that it is formed from crystallised alumina.
- Timepiece characterized in that it includes an external piece (3, 23, 43, 63, 83, 103) according to any of claims 10 to 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12705111.8A EP2686135B1 (en) | 2011-03-16 | 2012-02-17 | Piece of casing for a time piece and system for manufacturing same |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11158456A EP2500134A1 (en) | 2011-03-16 | 2011-03-16 | Cover part for a timepiece and system for the manufacturing thereof |
PCT/EP2012/052740 WO2012123214A1 (en) | 2011-03-16 | 2012-02-17 | Piece of casing for a time piece and system for manufacturing same |
EP12705111.8A EP2686135B1 (en) | 2011-03-16 | 2012-02-17 | Piece of casing for a time piece and system for manufacturing same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2686135A1 EP2686135A1 (en) | 2014-01-22 |
EP2686135B1 true EP2686135B1 (en) | 2015-04-08 |
Family
ID=44343027
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11158456A Withdrawn EP2500134A1 (en) | 2011-03-16 | 2011-03-16 | Cover part for a timepiece and system for the manufacturing thereof |
EP12705111.8A Active EP2686135B1 (en) | 2011-03-16 | 2012-02-17 | Piece of casing for a time piece and system for manufacturing same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11158456A Withdrawn EP2500134A1 (en) | 2011-03-16 | 2011-03-16 | Cover part for a timepiece and system for the manufacturing thereof |
Country Status (7)
Country | Link |
---|---|
US (1) | US9372474B2 (en) |
EP (2) | EP2500134A1 (en) |
JP (1) | JP5931094B2 (en) |
CN (1) | CN103442846B (en) |
HK (1) | HK1192195A1 (en) |
RU (1) | RU2590466C2 (en) |
WO (1) | WO2012123214A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109333178A (en) * | 2018-11-12 | 2019-02-15 | 上海交通大学 | Symmetrical configurations precision dise knife numerically control grinder and method for grinding |
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SU528181A1 (en) * | 1973-07-06 | 1976-09-15 | Предприятие П/Я Г-4671 | The method of processing aspherical surfaces |
US4038783A (en) * | 1976-09-03 | 1977-08-02 | Leon Rosenthal | Method and apparatus for generating optic lenses |
DK338978A (en) * | 1977-08-02 | 1979-02-03 | Automated Optics | CONTACT LENS AND METHOD AND MACHINE FOR MANUFACTURE OF SUCH LENSES |
CH657246GA3 (en) | 1984-07-12 | 1986-08-29 | ||
US4862646A (en) * | 1986-01-28 | 1989-09-05 | Laser Magnetic Storage International Company | Apparatus and method for production of single element toric lenses of very small proportions |
JP2602293B2 (en) * | 1988-08-12 | 1997-04-23 | 株式会社日立製作所 | Processing method and processing apparatus for aspherical object |
US4884482A (en) * | 1988-11-22 | 1989-12-05 | Citycrown, Inc. | Method and apparatus for cutting an aspheric surface on a workpiece |
US5231587A (en) * | 1990-07-12 | 1993-07-27 | Loh Optical Machinery, Inc. | Computer controlled lens surfacer |
US5967879A (en) * | 1994-04-26 | 1999-10-19 | Gottschald; Lutz | Process and system to machine and in particular to grind the optical surfaces and/or circumferential edge of eyeglass lenses |
JP3598534B2 (en) * | 1994-04-28 | 2004-12-08 | 豊田工機株式会社 | Aspherical surface processing equipment |
JPH0929598A (en) * | 1995-07-25 | 1997-02-04 | Hitachi Ltd | Processing device for aspheric surface shape object |
CH690873A5 (en) * | 1996-10-04 | 2001-02-15 | Stettler Hans Ag | Ice shows. |
CN2278561Y (en) * | 1997-03-14 | 1998-04-15 | 王斌武 | Wheel type inscattering lens fine grinding polishing machine |
AUPO625797A0 (en) * | 1997-04-17 | 1997-05-15 | Sola International Holdings Ltd | Spectacles bearing sunglass lenses |
RU2127182C1 (en) * | 1998-02-11 | 1999-03-10 | Государственное научно-производственное объединение "Оптика" | Method for manufacturing of optical lenses |
DE69827768D1 (en) * | 1998-04-02 | 2004-12-30 | Comadur Sa | Watch glass with a lens and method for producing such a lens |
US6478658B1 (en) * | 2000-07-25 | 2002-11-12 | Gerber Coburn Optical, Inc. | Apparatus for generating lens surfaces |
SG103916A1 (en) * | 2002-04-03 | 2004-05-26 | Lemania Nouvelle Sa | Watch including a case of elongated shape |
CH695801A5 (en) * | 2002-11-26 | 2006-08-31 | Comadur Sa | Watch glass with a non-circular lens and method of forming such a lens. |
US7134752B2 (en) * | 2003-12-03 | 2006-11-14 | Sola International Holdings Ltd. | Shaped non-corrective eyewear lenses and methods for providing same |
DE102004037454A1 (en) * | 2004-08-02 | 2006-02-23 | Carl Zeiss Ag | Method for processing surfaces of workpieces |
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ATE478365T1 (en) * | 2004-09-29 | 2010-09-15 | Asulab Sa | DISPLAY LIGHTING OF A DIAL WITH CENTRAL SYMMETRY |
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US20090223437A1 (en) * | 2008-03-07 | 2009-09-10 | Ballard Claudio R | Gauge having synthetic sapphire lens |
EP2228694A1 (en) * | 2009-03-12 | 2010-09-15 | Stettler Sapphire AG | Method and device for grinding watch glasses |
EP2537633B1 (en) * | 2011-06-24 | 2014-05-07 | Comadur S.A. | Bevel machining system |
-
2011
- 2011-03-16 EP EP11158456A patent/EP2500134A1/en not_active Withdrawn
-
2012
- 2012-02-17 RU RU2013146015/02A patent/RU2590466C2/en active
- 2012-02-17 WO PCT/EP2012/052740 patent/WO2012123214A1/en active Application Filing
- 2012-02-17 JP JP2013558349A patent/JP5931094B2/en active Active
- 2012-02-17 CN CN201280013563.3A patent/CN103442846B/en active Active
- 2012-02-17 US US14/004,320 patent/US9372474B2/en active Active
- 2012-02-17 EP EP12705111.8A patent/EP2686135B1/en active Active
-
2014
- 2014-06-10 HK HK14105457.9A patent/HK1192195A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
RU2013146015A (en) | 2015-04-27 |
JP2014512974A (en) | 2014-05-29 |
US20130343165A1 (en) | 2013-12-26 |
JP5931094B2 (en) | 2016-06-08 |
EP2686135A1 (en) | 2014-01-22 |
EP2500134A1 (en) | 2012-09-19 |
RU2590466C2 (en) | 2016-07-10 |
CN103442846B (en) | 2016-06-22 |
WO2012123214A1 (en) | 2012-09-20 |
US9372474B2 (en) | 2016-06-21 |
CN103442846A (en) | 2013-12-11 |
HK1192195A1 (en) | 2014-08-15 |
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