EP0819967B1 - Procédé pour le relevé de la section du drageoir d'une monture de lunettes, palpeur correspondant, et application de ce procédé au débordage du verre à monter - Google Patents
Procédé pour le relevé de la section du drageoir d'une monture de lunettes, palpeur correspondant, et application de ce procédé au débordage du verre à monter Download PDFInfo
- Publication number
- EP0819967B1 EP0819967B1 EP97401575A EP97401575A EP0819967B1 EP 0819967 B1 EP0819967 B1 EP 0819967B1 EP 97401575 A EP97401575 A EP 97401575A EP 97401575 A EP97401575 A EP 97401575A EP 0819967 B1 EP0819967 B1 EP 0819967B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bezel
- feeler
- head
- flank
- section
- 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.)
- Expired - Lifetime
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Images
Classifications
-
- 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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
- B24B9/144—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms the spectacles being used as a template
Definitions
- the present invention relates generally to the reading of contour which is usually carried out on circles or circles a spectacle frame to adapt to them the spectacle lenses which must be mounted there.
- This contour reading is commonly done on a device equipped with a suitable sensor or probe.
- the spectacle frame on which it must a contour reading is kept fixed, and the probe, which comprises, at the end of a rod, a head to be inserted into the bezel of the circle or entourage concerned, is, him, mounted mobile, and it is carried out a location systematic of its position in a determined coordinate system.
- this location involves, on the one hand, coordinates polar, in a plane perpendicular to the probe rod, and, on the other hand, a altitude, perpendicular to this plane, to take into account the meniscus of circles or entourages of the most common spectacle frames.
- the contour reading carried out essentially relates to the contour circumferential of the circle or surrounding of spectacle frame scrutinized.
- This cross section can be compared to that of a dihedral; she can also be any, other than that of a dihedral, for example half-round ; moreover, in practice, from one spectacle frame to another, it there is significant diversity between the cross sections of the bezels according to the manufacturers.
- a spectacle lens traditionally referred to as a bevel even when its section has a shape other than that of a dihedral, as well as to the wear of which such a grindstone is just as inevitably the object over time, it is not not uncommon to observe, between the cross section of the bevel of a glass of glasses and that of the bezel of the circle or entourage of glasses frame in which it has to be mounted, enough discrepancies important to compromise the proper maintenance of this spectacle lens in this circle or entourage of spectacle frame.
- the present invention firstly relates to a method for the actual reading of this cross section; it still has for its object a mechanical probe specific to the implementation of this process.
- the process according to the invention is generally characterized in that, having a movable probe whose position can be identified in a given coordinate system, we bring to the right of the bezel what feeler, by having successively aim at the head of this feeler at least two points on at least one of the flanks of this different bezel one of the other, and we deduce the coordinates of these points.
- the bezel section which can be arbitrary, here we mean by flank each of the walls of bezel located on both sides, axially, from the bottom proper of the bezel.
- an intangible head that is to say a geometry head determined, we work in isolation on one side of the bezel, without interference with the other of these flanks, and either we extrapolate, by symmetry, for the other flank, the reading taken, or we then intervene on this other flank of the same way as for the first.
- the invention very simply makes it possible to determine the section of the bezel of this eyeglass frame circle or circle, at least one point on it.
- Another object of the invention is the application of the above method when the glass intended to be mounted in said bezel is overflowed, the cross section of which has been raised. It is indeed possible, therefore, to reconstruct completely fitting the glass into the spectacle frame and thus being informed about the position, on the one hand, of the points of contact between the bevel of the glass and the sides of the bezel of the frame and, on the other hand, of the top of the bevel.
- the reconstitution of the casing of the glass is obtained by approximating, graphically and / or numerically, the section of the bezel and that of the grinding stone intended to overflow the glass, these two sections being of course on the same scale;
- the section of the grinding wheel is obtained by conventional means, such as profile projector, dimensional machine Or other.
- the close position where the section of the grinding wheel touches the section of the bezel corresponds to the simulated placement of the lens in the frame, which lets you know the position of the top of the bevel relative to the bezel; therefore, the instructions to be given to the grinding wheel for overflowing the glass are obtained by correcting the contour statement circumference of the bezel taking into account this relative position of the apex bevel.
- a contact probe is used so that the head of the probe is "carried" on said points; it is obvious that these points can be determined using a contactless probe, by example with optical head.
- the bezel 10 which is to raise the section transverse, forms a groove along the inner periphery of the circle or entourage 11.
- it has, in section transverse, a dihedral profile, presenting, obliquely, two sides 13, 13 ', which overlap each other inwards at an opening angle AT.
- the probe 12 for its part, comprises a rod 14, which extends substantially perpendicular to the plane of the circle or entourage 11, and, cantilevered on this rod 14, in practice at the upper end thereof, a head 15 by which it is suitable for engaging in the bezel 10, for contact with this one.
- this head 15 is intangible, insofar as, permanently linked to the rod 14, it has a well defined geometry and, therefore, a caliber also well determined.
- this is a flat palette, which, perpendicular to the rod 14, is cut in the style of a style.
- the spectacle frame to which the circle or entourage 11 belongs is fixed, in being for example clamped between jaws suitable for its maintenance, the probe 12 is itself mobile.
- the position of the probe 12 can be identified at any time in a given coordinate system.
- the probe 12 is, on the one hand, mobile in a plane P, with respect to which the plane according to which extends the spectacle frame to which the circle or entourage belongs 11 is substantially parallel, and, on the other hand, movable perpendicular to it plane P, along the axis of its rod 14, as shown schematically by a double arrow F1 in figure 1.
- the position of the probe 12 is, for example, marked in polar coordinates RT, and this is the case in the reading device of contour which is the subject of French patent No 89 13 079.
- the position of probe 12 is marked by its altitude Z.
- the probe 12 can also be rotatably mounted around the axis of its rod 14, for controlling the orientation of its head 15.
- FIGS. 4 to 6 it is proposed, as a variant, according to the invention, to use a probe 12 having, for contact with the bezel 10, an interchangeable head 15A, 15B.
- the probe 12 can thus comprise, associated with the same rod 14, at minus two heads 15A, 15B of different calibers.
- these two heads 15A, 15B are each respectively permanently arranged at the two ends of a crosspiece 16, which, carried by the rod 14, for example at its upper end, as shown, extends on either side of this rod 14, substantially perpendicular thereto.
- the two heads 15A, 15B are spherical heads, with radii RA, RB different.
- figure 4 we intervene thus simultaneously on the two sides 13, 13 ′ of the bezel 10 with a first head 15A, which makes it possible to take the coordinates of a point P1 on the side 13 of this bezel 10 and the coordinates of a point P'2 on the flank 13 'of this one, and, after reversing the probe 12, we then proceed in the same way with a second 15B head, of a different caliber from that of the first, which makes it possible to note the coordinates of a point P2 on the side 13 of the bezel 10 and the coordinates of a point P'1 on the side 13 'thereof.
- each of the heads 15A, 15B is carried by an end piece 18A, 18B individually by which it is adapted to be removably attached to the rod 14.
- the tip 18A, 18B is the same type for the two heads 15A, 15B, and it is a nozzle 18A, 18B suitable for cooperate in fitting with a nozzle 19 provided so complementary to this effect on the rod 14.
- the tip 18A, 18B of rods 15A, 15B is a male end piece, while the end piece 19 of the rod 14 is a female end cap, but, of course, a reverse arrangement can be adopted.
- the section of the bezel 10 is in the form of a dihedral; it will be readily understood that the invention applies whatever the shape of the bezel section; when it is not in dihedral shape, the coordinates of several points, one hundred per example, are necessary to obtain a good representation of said section.
- FIGS. 7 and 8 show the application of the method in which the probe is of the type described in connection with FIGS. 1 to 3B.
- FIG. 7 there is shown the bezel 10, the circle or entourage 11, the cross section of which, here the dihedral-shaped flanks 13, 13 ′, has been determined by the above method using the probe 12; this one is in the background bezel, its head 15 touching the sides 13, 13 'in Po, P'o, respectively, and is spaced from the bottom 21 proper, junction line of the sides 13, 13 'from the bezel 10; it is in this position that the probe 12 is moved parallel to the plane P to raise the circumferential contour of the circle or frame entourage, in fact a homothetic Co image of the bottom 21 of the bezel 10, partially visible in plan in Figure 8 which is a view of above with respect to FIG. 7, said image Co being produced from probe readings, here the coordinates of the probe contact points 12 with the sides 13, 13 'of the bezel 10.
- section 30 of the grinding wheel intended to overflow the glass to be associated with the bezel 10, this section 30 being at the same scale as that of the bezel 10, these two sections having been close to each other until contact so that is thus simulated mounting the glass in the bezel 10, the section of the grinding wheel having heard a shape strictly complementary to that of the bevel of the glass.
- this offset can also be corrected by a game functional, if desired, for example to limit or eliminate constraints during mounting the glass, especially if it is a mineral glass.
- FIG. 9 shows an application similar to that which has just been described, but in the case where the probe is of the spherical head type, as for example the probe 15A in FIGS. 4 to 6.
- the data of the probe lead to curve 110 ', place of points C100 corresponding to each position of the center of the sphere 15A when the probe examines the bezel, the sides therefore happen to be the envelope of the circular sections of said sphere.
- the reconciliation of section 110 of the bezel and that 130 of the grinding wheel gives the difference 140 between the image Co, here the probe point closest to the bottom 121 of the bezel, and the top 131 of the cut glass bevel.
- the present invention is moreover not limited to the forms of realization and implementation described and represented, but includes all variant.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Eyeglasses (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Length Measuring Devices By Optical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Description
Claims (13)
- Procédé pour le relevé de la section transversale du drageoir (10) d'un cercle ou entourage (11) de monture de lunettes en un point au moins de celui-ci, caractérisé en ce que, disposant d'un palpeur mecanique (12) mobile dont la position peut être repérée dans un système de coordonnées donné, on amène au droit du drageoir (10) ce palpeur (12), en faisant successivement viser par la tête (15) de ce palpeur (12) au moins deux points (P1, P2, P'1, P'2) de l'un au moins des flancs (13, 13') de ce drageoir (10) différents l'un de l'autre, pour en déduire les coordonnées de ces points (P1, P2, P'1, P'2).
- Procédé suivant la revendication 1, caractérisé en ce que, le palpeur (12) dont on dispose présentant, pour la visée du drageoir (10), une tête (15) intangible, on intervient isolément sur l'un des flancs (13, 13') du drageoir (10), sans interférence avec l'autre de ces flancs (13, 13').
- Procédé suivant la revendication 2, caractérisé en ce que on intervient aussi ensuite sur l'autre des flancs (13, 13') du drageoir (10).
- Procédé suivant l'une quelconque des revendications 1 à 3, dans lequel la section du drageoir est en forme de dièdre, caractérisé par le fait qu'on fait viser successivement par la tête (15) du palpeur (12) deux points (P1, P2, P'1, P'2) de l'un au moins des flancs (13, 13') du drageoir (10) différents l'un de l'autre, et on déduit des coordonnées de ces points (P1, P2, P'1, P'2) la pente de ce flanc (13, 13').
- Procédé suivant l'une quelconque des revendications 2 à 4, dans lequel le palpeur (12) est un palpeur à contact, caractérisé en ce que, le palpeur (12) étant en contact par sa tête (15) avec l'un des flancs (13, 13') du drageoir (10), on le fait glisser le long de ce flanc (13, 13').
- Procédé suivant la revendication 1, dans lequel le palpeur (12) est un palpeur à contact, caractérisé en ce que, le palpeur (12) dont on dispose présentant, pour le contact avec le drageoir (10), une tête (15A, 15B) interchangeable, on intervient simultanément sur les deux flancs (13, 13') du drageoir (10) avec une première tête (15A) de ce palpeur (12), et on procède ensuite de même avec une deuxième tête (15B) de ce palpeur (12) de calibre différent de celui de la première tête (15A).
- Palpeur pour la mise en oeuvre d'un procédé conforme à la revendication 6, caractérisé en ce qu'il comporte, associées à une même tige (14), au moins deux têtes (15A, 15B) de calibres différents.
- Palpeur suivant la revendication 7, caractérisé en ce que les deux têtes (15A, 15B) sont chacune respectivement disposées à demeure aux deux extrémités d'une traverse (16) portée par la tige (14).
- Palpeur suivant la revendication 7, caractérisé en ce que chacune des têtes (15A, 15B) est portée par un embout (18A, 18B) individuel par lequel elle est adaptée à être rapportée de manière amovible sur la tige (14).
- Palpeur suivant la revendication 9, caractérisé en ce que l'embout (18A, 18B) est de même type pour les deux têtes (15A, 15B), et il s'agit d'un embout (18A, 18B) propre à coopérer en emmanchement avec un embout (19) prévu de manière complémentaire à cet effet sur la tige (14).
- Palpeur suivant l'une quelconque des revendications 7 à 10, caractérisé en ce que deux têtes (15A, 15B) sont des têtes sphériques de rayons (RA, RB) différents.
- Application du procédé selon l'une quelconque des revendications 1 à 6, selon laquelle la section transversale (13, 13' ; 110) du drageoir (10) et la section transversale (30, 130) de la meule destinée à déborder le verre que doit recevoir ledit drageoir (10) sont rapprochées jusqu'à simuler le montage du verre dans le drageoir (10), et on en déduit les instructions à donner à la meule pour le débordage du verre.
- Application selon la revendication 12, caractérisée par le fait que lesdites instructions sont élaborées à partir du décalage (40, 140) relevé entre l'image Co du contour circonférentiel du fond (21, 121) du drageoir (10) et l'image du sommet (31, 131) du biseau du verre représentée par le fond de la gorge de la meule.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9609016 | 1996-07-18 | ||
FR9609016A FR2751433B1 (fr) | 1996-07-18 | 1996-07-18 | Procede pour le releve de la section du drageoir d'une monture de lunettes, palpeur correspondant, et application de ce procede au debordage du verre a monter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0819967A1 EP0819967A1 (fr) | 1998-01-21 |
EP0819967B1 true EP0819967B1 (fr) | 2003-04-09 |
Family
ID=9494194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97401575A Expired - Lifetime EP0819967B1 (fr) | 1996-07-18 | 1997-07-03 | Procédé pour le relevé de la section du drageoir d'une monture de lunettes, palpeur correspondant, et application de ce procédé au débordage du verre à monter |
Country Status (6)
Country | Link |
---|---|
US (1) | US5881467A (fr) |
EP (1) | EP0819967B1 (fr) |
JP (1) | JPH10113853A (fr) |
DE (1) | DE69720611T2 (fr) |
ES (1) | ES2196274T3 (fr) |
FR (1) | FR2751433B1 (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2777817B1 (fr) * | 1998-04-27 | 2000-07-13 | Briot Int | Procede et appareil de palpage de montures de lunettes, et machine de meulage correspondante |
DE19919311C1 (de) * | 1999-04-28 | 2001-02-15 | Wernicke & Co Gmbh | Verfahren und Vorrichtung zum berührungslosen Abtasten der Brillenglasöffnung einer Brillenfassung oder des Umfangs eines Brillenglases oder einer Formscheibe |
JP3734386B2 (ja) * | 1999-08-03 | 2006-01-11 | 株式会社ニデック | 玉型形状測定装置 |
JP4360764B2 (ja) | 2000-04-28 | 2009-11-11 | 株式会社トプコン | 眼鏡レンズのレンズ周縁加工方法、レンズ周縁加工装置及び眼鏡レンズ |
JP2004003944A (ja) * | 2002-04-08 | 2004-01-08 | Hoya Corp | 眼鏡枠形状測定装置 |
FR2870933B1 (fr) * | 2004-05-28 | 2008-03-14 | Essilor Int | Appareil de lecture de contour comportant un capteur d'effort |
FR2892332B1 (fr) * | 2005-10-20 | 2008-02-01 | Briot Internat Sa | Appareil de palpage d'une monture de lunettes et machine de meulage associee |
FR2893523B1 (fr) * | 2005-11-21 | 2008-01-18 | Essilor Int | Methode d'etalonnage d'une meuleuse et dispositif correspondant |
FR2893723B1 (fr) * | 2005-11-23 | 2008-02-01 | Essilor Int | Appareil de lecture de contour de drageoir de cercle de monture de lunettes |
EP2016365B1 (fr) | 2006-05-05 | 2011-09-28 | ESSILOR INTERNATIONAL (Compagnie Générale d'Optique) | Procédé d'acquisition de la forme d'une partie au moins d'une section d'un cercle de monture de lunettes |
WO2008142291A2 (fr) * | 2007-04-24 | 2008-11-27 | Essilor International (Compagnie Generale D'optique) | Procédé de préparation d'une lentille ophtalmique à l'affleurement d'un entourage d'une monture de lunettes |
FR2907041B1 (fr) * | 2006-10-13 | 2008-12-26 | Essilor Int | Procede de detourage d'une lentille ophtalmique |
FR2910136B1 (fr) | 2006-12-18 | 2009-02-27 | Essilor Int | Procede de correction de la geometrie d'une couche palpee approchant un brin longitudinal d'un drageoir de monture de lunettes et procede d'acquisition de la geometrie d'un contour d'un tel drageoir |
EP2031435B1 (fr) * | 2007-12-28 | 2019-02-27 | Essilor International | Procédé pour déterminer un ensemble de données de contour d'un bord de cadre de lunettes |
DE602007010282D1 (de) * | 2007-12-28 | 2010-12-16 | Essilor Int | Verfahren zur Bestimmung der Parameter für die Trägerherstellung einer Kontaktlinse |
FR3024247B1 (fr) | 2014-07-25 | 2018-02-09 | Essilor International | Machine d'acquisition d'images de lentilles optiques et procede de detourage de lentilles optiques |
CN108340237A (zh) * | 2018-03-27 | 2018-07-31 | 京东方科技集团股份有限公司 | 研磨装置及研磨方法 |
EP4166275A1 (fr) | 2021-10-18 | 2023-04-19 | Essilor International | Procédé de détermination de la forme d'une bordure de monture de lunettes |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58196407A (ja) * | 1982-05-12 | 1983-11-15 | Sadao Takubo | 眼鏡フレ−ム枠v状溝内周長測定装置 |
DE3578898D1 (de) * | 1984-12-25 | 1990-08-30 | Topcon Corp | Vorrichtung zum messen des profils von brillenfassungen. |
FR2634880B1 (fr) * | 1988-07-27 | 1991-08-16 | Briot Int | Appareil pour mesurer les cotes interieures d'une monture de lunettes |
US5189806A (en) * | 1988-12-19 | 1993-03-02 | Renishaw Plc | Method of and apparatus for scanning the surface of a workpiece |
FR2652893B1 (fr) * | 1989-10-06 | 1993-03-19 | Essilor Int | Appareil de lecture de contour, notamment pour monture de lunettes. |
FR2662793B1 (fr) * | 1990-05-30 | 1994-03-18 | Renault | Installation de mesure en continu des defauts de forme d'une piece, et procede de mesure mis en óoeuvre dans cette installation. |
US5121550A (en) * | 1990-12-03 | 1992-06-16 | Gerber Optial, Inc. | Automatic surface tracer |
DK16791D0 (da) * | 1991-01-30 | 1991-01-30 | Leif Groenskov | Fremgangsmaade og middel til maaling af et profil |
FR2673710B1 (fr) * | 1991-03-07 | 1993-06-18 | Essilor Int | Procede pour une lecture de forme d'un quelconque article deformable elastiquement, en particulier pour la lecture de contour d'un cercle ou entourage d'une monture de lunettes. |
FR2679997B1 (fr) * | 1991-07-29 | 1996-08-02 | Buchmann Optical Eng | Appareil pour relever automatiquement la forme et/ou le profil du contour interne d'un cercle de monture de lunettes. |
US5450335A (en) * | 1992-08-05 | 1995-09-12 | Hoya Corporation | Method of processing spectacle frame shape data |
US5515612A (en) * | 1993-01-08 | 1996-05-14 | Hoya Corporation | Apparatus for measuring the shape of a frame of spectacles |
-
1996
- 1996-07-18 FR FR9609016A patent/FR2751433B1/fr not_active Expired - Lifetime
-
1997
- 1997-07-03 DE DE69720611T patent/DE69720611T2/de not_active Expired - Lifetime
- 1997-07-03 EP EP97401575A patent/EP0819967B1/fr not_active Expired - Lifetime
- 1997-07-03 US US08/888,095 patent/US5881467A/en not_active Expired - Lifetime
- 1997-07-03 ES ES97401575T patent/ES2196274T3/es not_active Expired - Lifetime
- 1997-07-17 JP JP9192383A patent/JPH10113853A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US5881467A (en) | 1999-03-16 |
DE69720611D1 (de) | 2003-05-15 |
FR2751433B1 (fr) | 1998-10-09 |
ES2196274T3 (es) | 2003-12-16 |
DE69720611T2 (de) | 2004-01-29 |
FR2751433A1 (fr) | 1998-01-23 |
EP0819967A1 (fr) | 1998-01-21 |
JPH10113853A (ja) | 1998-05-06 |
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