EP0654322B1 - Machine à déborder pour verre de lunettes - Google Patents
Machine à déborder pour verre de lunettes Download PDFInfo
- Publication number
- EP0654322B1 EP0654322B1 EP94402330A EP94402330A EP0654322B1 EP 0654322 B1 EP0654322 B1 EP 0654322B1 EP 94402330 A EP94402330 A EP 94402330A EP 94402330 A EP94402330 A EP 94402330A EP 0654322 B1 EP0654322 B1 EP 0654322B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- contact member
- rocker
- lens
- edge
- 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
Links
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
Definitions
- the present invention relates generally the machines used for the overflowing that it is normally necessary to apply by machining to a glass of glasses to adjust the outline to that of the circle or entourage of glasses frame that he must equip.
- these machines which includes at least one cutting tool, such as a grinding wheel or cutter, rotatably mounted on a frame, rocker, mounted pivoting on this frame around an axis parallel to the axis of cutting tool rotation, support spindle, mounted rotating on the rocker around an axis also parallel to the axis of rotation of the cutting tool and adapted to receive, axially, perpendicular to the cutting tool, the glass to be machined, and, at a distance from this glass, a template, and, carried by the frame plumb with this template, to provide support for the scale through it and so stop at a rating of instruction to respect the relative engagement movement of the lens compared to the cutting tool, a key, commonly called vernier head.
- a cutting tool such as a grinding wheel or cutter
- the template can be directly around the circle or entourage of spectacle frame to be fitted, and, in this case, the key can be fixed.
- the template can be of outline circular, and in this case the associated key is mounted mobile on the frame under the control of steering means which, restoring the form data transmitted to them by a contour reading device to which is corollarily subject the circle or entourage of spectacle frame to be fitted, impose at any time on this key, for an orientation given angularity of the support pin carrying the glass machining, a specified set point dimension.
- This bearing load usually results from the effect combined with the weight of the scale and associated means works for this purpose.
- Additional means include for example a counterweight mounted adjustable in position on the rocker transversely relative to the pivot axis thereof.
- the additional means used can also include elastic means.
- these elastic means which are for example formed by a preloaded spring, are established between the rocker and the frame, and so they are actually likely to request this rocker in the direction of the key carried by the built.
- the present invention generally has for object a provision allowing to satisfy in a very simple to this double requirement.
- a machine to overflow for glasses of the kind comprising at least a cutting tool, such as a grinding wheel or a bur, which is rotatably mounted on a frame, a rocker, which is mounted pivoting on this frame around an axis parallel to the axis of rotation of the cutting tool, a support spindle, which is rotating climb on the scale around an axis also parallel to the axis of rotation of the cutting tool, and which is adapted to receive, axially, directly above the cutting tool, the glass to be machined, and, at a distance from this glass, a template, and, carried by the frame below this template, a touch, with, between the scale and the frame, elastic means capable to request this rocker in the direction of this key, this machine being generally characterized in that, the key being movably mounted on the frame, it is provided, between the rocker and it, in addition to the elastic means intervening between the scale and the frame and said below by simple convenience main elastic means, elastic means auxiliaries who are also likely
- this charge additional support is at most equal to a fraction of that due to the main elastic means.
- this support load complementary during machining, so it suffices to so that the key is only at a short distance at all times of the template, ordering its movement accordingly.
- this key being precisely subject to moving control means, these are for this purpose themselves under the control of steering means allowing if desired to temporarily confer the key, for a given angular orientation of the support pin carrying the glass, a dimension in relation to the lower gauge at the set point normally to be observed for machining of this glass in this angular orientation of this pin of support.
- the support load is not due for the main thing that only the main elastic means, the auxiliary elastic means somehow inhibited.
- This support load is then substantially constant, and by construction it can be done relatively moderate, which is ideal for machining a glass fine or fragile.
- the additional support load induced by the means auxiliary elastic then takes its full value, while decreasing as the machining progresses.
- the overflowing machine 11 comprises, overall, at least one cutting tool 12, such like a grinding wheel or a milling cutter, for example, which of a motor 13, is rotatably mounted on a frame not shown in all its details, along an axis of rotation A1 shown diagrammatically in broken lines in FIG. 1, a rocker 14, which, according to the double arrow F in FIG.
- a support pin 15 which is mounted rotating on the rocker 14 around an axis A3 too shown schematically in broken lines in Figure 1 and him too parallel to the axis of rotation A1 of the cutting tool 12, and which is adapted to receive, axially, on the one hand, directly above the cutting tool 12, the glass 10 to be machined, being, by example, and as shown, formed of two half-pins 15 ', 15' 'suitable for axially enclosing this glass 10 previously slipped accordingly, and, on the other hand, to distance from the lens 10, and according to the arrangements described more in detail later, a template 16, and, carried by the frame directly above this template 16, a key 17, commonly called vernier head.
- the template 16 is of circular outline, and, jointly, and along arrangements described in more detail later, the key 17 is movably mounted on the frame.
- the template 16 is a drum fitted on the support pin 15 at the end of this one.
- it may be a simple disc.
- the key 17 is carried by this square 18, while being subjected to displacement control means 20.
- these means movement control 20 comprises a nut 21, which carries the key 17 or forms by itself such a key 17, a screw 22, with which the nut 21 is in screw connection and which is rotatably mounted on the frame, and, more precisely, on the bracket 18, and a motor 23, which is also carried by this bracket 18, and whose output shaft 24 provides the driving of the screw 22 or forms by itself such a screw 22.
- the nut 21 effectively forms the key 17 by itself, and, likewise, the output shaft 24 of the motor 23 actually forms by itself the screw 22.
- the nut 21 and the screw 22 form together what is commonly called a ball screw.
- these means elastic 25, here called main elastic means are constituted by a simple preloaded tension spring and hitched to rocker 14 at one end and square 18 to the other of these.
- the point action of these main elastic means 25 on the rocker 14, materialized by a stud 26 provided laterally projecting thereon, parallel to its pivot axis A2, is located beyond this pivot axis A2 with respect to their attachment point 27 on the frame, and more precisely on square 18.
- these main elastic means 25 can indifferently either solicit effectively this rocker 14 in the direction of key 17, and this is of course the case during the machining of a glass 10, as shown in the figures 3 to 5, or, on the contrary, request rocker 14 in the direction opposite key 17, and this is the case for the position rest reading shown in figure 2.
- auxiliary elastic bands 28 which are also liable to stress rocker 14 in the direction of key 17.
- auxiliary elastic 28 consist of a simple spring of traction hitched to the rocker 14 at one of its ends and key 17 to the other of these.
- this tension spring is coupled to one from its ends to the support pin 15 which the flip-flop 14, and, at the other end, it is coupled to a stud 29 provided laterally projecting for this purpose on the nut 21 forming the key 17, parallel to this pin support 15.
- this fraction is around a third.
- the force exerted on the scale 14 by the tension spring constituting the elastic means main 25 is around 3 kg, while that exerted by the tension spring constituting the means auxiliary elastic 28 is of the order of approximately 1 kg.
- the support load induced at the glass 10 by the auxiliary elastic means 28 is substantially zero.
- D1 be the distance then existing between the points attachment of the auxiliary elastic means 28, materialized one by the support pin 15 and the other by the stud 29.
- the button is placed directly 17 at the set point normally to be observed for machining of it.
- the displacement control means 20 of this key 17 can to this end be under the control of steering means 30 their restoring the shape data they receive from a device contour reading not shown.
- This tension spring is then tensioned, and it adds therefore its effects to those of the tension spring constituting the main elastic means 25.
- the distance D2 decreases, until, at the end of machining, and such as shown in Figure 4, it takes the value of the previous distance D1.
- the tension spring constituting the means auxiliary elastic 28 is then relaxed again, and the bearing load at glass 10 is no longer due only to only main elastic means 25.
- the glass 10 to be machined is a thin or fragile glass.
- the key 17 is then temporarily given a dimension with respect to the gauge 16 less than the dimension of Normally set to respect for the machining of glass 10 in this angular orientation of the support pin 15.
- the corresponding distance D'2 is therefore less than the previous distance D2.
- control means 30 are established Consequently.
- the tension spring constituting the elastic means auxiliary 28 is relaxed, or practically relaxed.
- the glass 10 is only subject to the support load induced by the means main elastic 25, the auxiliary elastic means 28 being somehow inhibited.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Milling Processes (AREA)
Description
Claims (7)
- Machine à déborder pour verre de lunettes du genre comportant au moins un outil de coupe (12), tel qu'une meule ou une fraise, qui est monté rotatif sur un bâti, une bascule (14), qui est montée pivotante sur ledit bâti autour d'un axe (A2) parallèle à l'axe de rotation (A1) de l'outil de coupe (12), une broche de support (15), qui est montée rotative sur la bascule (14) autour d'un axe (A3) lui aussi parallèle à l'axe de rotation (A1) de l'outil de coupe (12), et qui est adaptée à recevoir, axialement, à l'aplomb de l'outil de coupe (12), le verre (10) à usiner, et, à distance de ce verre (10), un gabarit (16), et, portée par le bâti à l'aplomb dudit gabarit (16), une touche (17), avec, entre la bascule (14) et le bâti, des moyens élastiques (25) susceptibles de solliciter ladite bascule (14) en direction de ladite touche (17), caractérisée en ce que, la touche (17) étant montée mobile sur le bâti, il est prévu, entre la bascule (14) et elle, en sus des moyens élastiques (25) intervenant entre la bascule (14) et le bâti et dits ci-après par simple commodité moyens élastiques principaux, des moyens élastiques auxiliaires (28) susceptibles eux aussi de solliciter ladite bascule (14) en direction de ladite touche (17).
- Machine à déborder suivant la revendication 1, caractérisée en ce que la charge d'appui induite au niveau du verre (10) par les moyens élastiques auxiliaires (28) n'est au plus égale qu'à une fraction de celle induite par les moyens élastiques principaux (25).
- Machine à déborder suivant la revendication 2, caractérisée en ce que ladite fraction est de l'ordre du tiers.
- Machine à déborder suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que, lorsque le gabarit (16) porté par la bascule (14) est au contact de la touche (17), la charge d'appui induite au niveau du verre (10) par les moyens élastiques auxiliaires (28) est sensiblement nulle.
- Machine à déborder suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que, la touche (17) étant soumise à des moyens de commande en déplacement (20), ceux-ci sont eux-mêmes sous le contrôle de moyens de pilotage (30) permettant de conférer temporairement à la touche (17), pour une orientation angulaire donnée de la broche de support (15) portant le verre (10), une cote par rapport au gabarit (16) inférieure à la cote de consigne normalement à respecter pour l'usinage du verre (10) dans cette orientation angulaire de cette broche de support (15).
- Machine à déborder suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que, la touche (17) étant soumise à des moyens de commande en déplacement (20), lesdits moyens de commande en déplacement (20) comportent un écrou (21), qui porte la touche (17) ou forme par lui-même une telle touche (17), une vis (22), avec laquelle ledit écrou (21) est en prise à vissage et qui est montée rotative sur le bâti, et un moteur (23) dont l'arbre de sortie (24) assure l'entraínement de la vis (22) ou forme par lui-même une telle vis (22).
- Machine à déborder suivant l'une quelconque des revendications 1 à 6, caractérisée en ce que le point d'action (26) des moyens élastiques principaux (25) sur la bascule (14) est situé au-delà de l'axe de pivotement (A2) de celle-ci par rapport à leur point d'attache (27) sur le bâti.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9312420A FR2711331B1 (fr) | 1993-10-19 | 1993-10-19 | Machine à déborder pour verre de lunettes. |
FR9312420 | 1993-10-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0654322A1 EP0654322A1 (fr) | 1995-05-24 |
EP0654322B1 true EP0654322B1 (fr) | 1998-04-01 |
Family
ID=9451970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94402330A Expired - Lifetime EP0654322B1 (fr) | 1993-10-19 | 1994-10-18 | Machine à déborder pour verre de lunettes |
Country Status (6)
Country | Link |
---|---|
US (1) | US5605498A (fr) |
EP (1) | EP0654322B1 (fr) |
JP (1) | JP3618799B2 (fr) |
DE (1) | DE69409327T2 (fr) |
ES (1) | ES2113624T3 (fr) |
FR (1) | FR2711331B1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5683288A (en) * | 1996-11-18 | 1997-11-04 | Elision Technology Inc. | Patternless edger apparatus for ophthalmic lens grinders |
JP3792069B2 (ja) * | 1999-05-31 | 2006-06-28 | 株式会社ニデック | 玉型形状測定装置及びこれを有する眼鏡レンズ加工装置 |
JP2003300136A (ja) * | 2002-04-08 | 2003-10-21 | Hoya Corp | レンズ加工装置 |
DE102005007523A1 (de) * | 2005-02-17 | 2006-08-24 | Weco Optik Gmbh | Brillenglasrandschleifmaschine |
FR2906746B1 (fr) * | 2006-10-10 | 2009-05-22 | Essilor Int | Dispositif d'usinage de lentilles ophtalmiques comprenant une pluralite d'outils d'usinage disposes sur un module orientable |
FR3002871B1 (fr) * | 2013-03-08 | 2015-03-13 | Essilor Int | Dispositif de detourage de lentilles ophtalmiques |
USD740949S1 (en) * | 2013-09-09 | 2015-10-13 | Essilor International (Compagnie Générale d'Optique) | Ophthalmic lens edger |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE280900C (fr) * | ||||
US2410443A (en) * | 1945-05-25 | 1946-11-05 | Howard G Hoffer | Apparatus for shaping objects provided with curved surfaces |
US3210890A (en) * | 1962-08-03 | 1965-10-12 | Edgar J Schroth | Edging machine |
DE7903025U1 (de) * | 1979-02-05 | 1979-05-17 | Wernicke & Co Gmbh, 4000 Duesseldorf | Brillenglasrand-schleifmaschine |
JPS6049545B2 (ja) * | 1982-04-16 | 1985-11-02 | 株式会社工研 | レンズ加工機 |
DE3221713A1 (de) * | 1982-06-09 | 1983-12-15 | Wernicke & Co GmbH, 4000 Düsseldorf | Brillenglasrandschleifmaschine |
JPS60150957A (ja) * | 1984-01-14 | 1985-08-08 | Koken:Kk | レンズ加工機 |
FR2565147B1 (fr) * | 1984-06-04 | 1988-04-01 | Essilor Int | Machine a meuler pour lentille ophtalmique, notamment pour le detourage et/ou le biseautage ou rainurage de celle-ci |
GB8700066D0 (en) * | 1987-01-05 | 1987-02-11 | Brain Power International | Lens edging machine |
US4945684A (en) * | 1987-01-12 | 1990-08-07 | Hoya Corporation | Method of and apparatus for processing peripheral edge of lens for spectacles |
DE3842601A1 (de) * | 1988-12-17 | 1990-07-05 | Wernicke & Co Gmbh | Brillenglasrandschleifmaschine |
FR2644718A1 (fr) * | 1989-03-23 | 1990-09-28 | Briot Internal | Dispositif de reetalonnage d'une machine a meuler les verres ophtalmiques pour rattraper l'usure de la meule |
FR2699445B1 (fr) * | 1992-12-18 | 1995-03-03 | Essilor Int | Procédé pour le contrôle sur une meuleuse de l'adéquation, à une monture de lunettes, d'un verre à meuler. |
-
1993
- 1993-10-19 FR FR9312420A patent/FR2711331B1/fr not_active Expired - Lifetime
-
1994
- 1994-10-05 US US08/318,114 patent/US5605498A/en not_active Expired - Fee Related
- 1994-10-18 EP EP94402330A patent/EP0654322B1/fr not_active Expired - Lifetime
- 1994-10-18 ES ES94402330T patent/ES2113624T3/es not_active Expired - Lifetime
- 1994-10-18 DE DE69409327T patent/DE69409327T2/de not_active Expired - Fee Related
- 1994-10-19 JP JP25260394A patent/JP3618799B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69409327D1 (de) | 1998-05-07 |
EP0654322A1 (fr) | 1995-05-24 |
ES2113624T3 (es) | 1998-05-01 |
FR2711331A1 (fr) | 1995-04-28 |
DE69409327T2 (de) | 1998-11-19 |
FR2711331B1 (fr) | 1996-01-26 |
JP3618799B2 (ja) | 2005-02-09 |
US5605498A (en) | 1997-02-25 |
JPH07164230A (ja) | 1995-06-27 |
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