EP0654322A1 - Brillenglasrand-Schleifmaschine - Google Patents

Brillenglasrand-Schleifmaschine Download PDF

Info

Publication number: EP0654322A1
Authority: EP; European Patent Office
Prior art keywords: key; rocker; frame; glass; elastic means
Prior art date: 1993-10-19
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP94402330A

Other languages

English (en)

French (fr)

Other versions

EP0654322B1 (de

Inventor

Michel Nauche

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

EssilorLuxottica SA

Original Assignee

Essilor International Compagnie Generale dOptique SA

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1993-10-19

Filing date

1994-10-18

Publication date

1995-05-24

1994-10-18 Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA

1995-05-24 Publication of EP0654322A1 publication Critical patent/EP0654322A1/de

1998-04-01 Application granted granted Critical

1998-04-01 Publication of EP0654322B1 publication Critical patent/EP0654322B1/de

2014-10-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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 to the machines used for overflowing which it is normally necessary to apply by machining to a spectacle lens in order to adjust the outline thereof to that of the circle or surrounding of spectacle frame that he must equip.
these machines which comprises at least one cutting tool, such as a grinding wheel or a milling cutter, rotatably mounted on a frame, a rocker, pivotally mounted on this frame around an axis parallel to the axis of rotation of the cutting tool, a support spindle, rotatably mounted on the rocker about an axis also parallel to the axis of rotation of the cutting tool and adapted to receive, axially, vertically of the cutting tool, the glass to be machined, and, at a distance from this glass, a template, and, carried by the frame directly above this template, to provide support for the rocker by means of that -this and thus stop at a set point to respect the relative engagement movement of the glass with respect to the cutting tool, a touch, commonly called vernier head.
a cutting tool such as a grinding wheel or a milling cutter
the template can be directly around the circle or around the frame of the spectacle frame to be fitted, and, in this case, the button can be fixed.
the template may be of circular outline, and, in this case, the associated key is mounted movably on the frame under the control of control means which, restoring the shape data which are transmitted to them by a device reading of the contour to which the circle or surrounding of the spectacle frame to be fitted is subjected as a corollary, at any time impose on this key, for a given angular orientation of the support spindle carrying the lens to be machined, a determined reference dimension.
This bearing load usually results from the combined effect of the weight of the rocker and additional means used for this purpose.
Additional means comprise for example a counterweight mounted adjustable in position on the rocker transversely relative to the pivot axis thereof.
the additional means used may 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 they are thus effectively capable of urging this rocker in the direction of the key carried by the frame.
the present invention generally relates to a provision making it possible to satisfy this double requirement very simply.
a machine for overflowing glasses of the kind comprising at least one cutting tool, such as a grinding wheel or a milling cutter, which is rotatably mounted on a frame, a rocker, which is mounted pivoting on this frame about an axis parallel to the axis of rotation of the cutting tool, a support spindle, which is rotatably mounted on the rocker around an axis also parallel to the axis of rotation of the cutting tool, and that is 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 below this template, a touch, with, between the rocker and the frame, elastic means capable of urging this rocker in the direction of this key, this machine being generally characterized in that, the key being movably mounted on the frame, there is provided, between the rocker and it, in addition to the elastic means intervening between the rocker and the frame and hereinafter called simply for convenience
this additional support load is at most equal to only a fraction of that due to the main elastic means.
this additional support load during machining it is therefore sufficient to ensure that the key is at all times only a short distance from the template, by consequently controlling its movement.
this key being precisely subjected to displacement control means, these are for this purpose themselves under the control of piloting means allowing, if desired, to temporarily confer on the key, for a given angular orientation of the support spindle carrying the glass, a dimension with respect to the template less than the reference dimension normally to be observed for the machining of this glass in this angular orientation of this support pin.
the bearing load is mainly due in this case only to the main elastic means, the auxiliary elastic means being somehow inhibited.
This bearing load is then substantially constant, and, by construction, it can be made relatively moderate, which is perfectly suitable for the machining of fine or fragile glass.
the additional bearing load induced by the auxiliary elastic means then takes its full value, while decreasing as the machining proceeds.
the overflowing machine 11 comprises, overall, at least one cutting tool 12, such as a grinding wheel or a milling cutter for example, which, under the control 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. 1, is pivotally mounted on the frame around an axis A2 parallel to the axis of rotation A1 of the cutting tool 12 and shown diagrammatically in broken lines in FIG.
a cutting tool 12 such as a grinding wheel or a milling cutter for example
the template 16 is of circular outline, and, jointly, and according to 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 thereof.
it may be a simple disc.
bracket 18 Only a part of the frame has been shown elsewhere in the figures, for simplification thereof, in this case a bracket 18.
the key 17 is carried by this bracket 18, while being subjected to displacement control means 20.
these displacement control means 20 comprise 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 screwed engagement 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 the output shaft 24 of which drives the screw 22 or forms by itself such a screw 22.
the nut 21 actually forms the key 17 by itself, and, likewise, the output shaft 24 of the motor 23 effectively forms the screw 22 by itself.
the nut 21 and the screw 22 jointly form what is commonly called a ball screw.
these elastic means 25, here called main elastic means consist of a simple tension spring preloaded and coupled to the rocker 14 at one of its ends and to the square 18 to the other of these.
the point of action of these main elastic means 25 on the lever 14, materialized by a stud 26 provided laterally projecting thereon, parallel to its pivot axis A2, is located beyond of this pivot axis A2 with respect to their point of attachment 27 on the frame, and more precisely on the bracket 18.
auxiliary elastic means 28 there is provided, between the rocker 14 and the key 17, in addition to the main elastic means 25 intervening between this rocker 14 and the frame, auxiliary elastic means 28 also capable of urging the rocker 14 towards key 17.
these auxiliary elastic means 28 are constituted by a simple tension spring coupled to the rocker 14 at one of its ends and to the key 17 at the other thereof.
this tension spring is coupled at one of its ends to the support pin 15 carried by the rocker 14, and, at the other of its ends, it is coupled to a stud 29 provided laterally projecting at this effect on the nut 21 forming the key 17, parallel to this support pin 15.
this fraction is around a third.
the force exerted on the rocker 14 by the tension spring constituting the main elastic means 25 is of the order of approximately 3 kg, while that exerted by the tension spring constituting the auxiliary elastic means 28 is of the order of approximately 1 kg.
the bearing load induced at the level of the glass 10 by the auxiliary elastic means 28 is substantially zero.
D1 be the distance then existing between the attachment points of the auxiliary elastic means 28, one materialized by the support pin 15 and the other by the stud 29.
the key 17 is placed directly at the reference dimension normally to be observed for the machining of the latter.
the displacement control means 20 of this key 17 can for this purpose be under the control of piloting means 30 restoring to them the shape data they receive from a device contour reading not shown.
This tension spring is then tensioned, and it therefore adds its effects to those of the tension spring constituting the main elastic means 25.
the distance D2 decreases, until, at the end of the machining, and as shown in FIG. 4, it returns to the value of the previous distance D1.
the tension spring constituting the auxiliary elastic means 28 is then relaxed again, and the bearing load at the level of the glass 10 is no longer due only to the 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 relative to the template 16 less than the reference dimension normally to be observed for the machining of the glass 10 in this angular orientation of the spindle support 15.
the corresponding distance D'2 is therefore less than the previous distance D2.
control means 30 are established accordingly.
the tension spring constituting the auxiliary elastic means 28 is relaxed, or practically relaxed.
the glass 10 is only subjected to the support load induced by the main elastic means 25, the auxiliary elastic means 28 being somewhat 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)

EP94402330A 1993-10-19 1994-10-18 Brillenglasrand-Schleifmaschine Expired - Lifetime EP0654322B1 (de)

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 true EP0654322A1 (de)	1995-05-24
EP0654322B1 EP0654322B1 (de)	1998-04-01

Family

ID=9451970

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94402330A Expired - Lifetime EP0654322B1 (de)	1993-10-19	1994-10-18	Brillenglasrand-Schleifmaschine

Country Status (6)

Country	Link
US (1)	US5605498A (de)
EP (1)	EP0654322B1 (de)
JP (1)	JP3618799B2 (de)
DE (1)	DE69409327T2 (de)
ES (1)	ES2113624T3 (de)
FR (1)	FR2711331B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1693151A3 (de) *	2005-02-17	2006-11-29	Buchmann Deutschland GmbH	Brillenglasrandschleifmaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE280900C (de) *
DE7903025U1 (de) *	1979-02-05	1979-05-17	Wernicke & Co Gmbh, 4000 Duesseldorf	Brillenglasrand-schleifmaschine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
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/de 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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE280900C (de) *
DE7903025U1 (de) *	1979-02-05	1979-05-17	Wernicke & Co Gmbh, 4000 Duesseldorf	Brillenglasrand-schleifmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1693151A3 (de) *	2005-02-17	2006-11-29	Buchmann Deutschland GmbH	Brillenglasrandschleifmaschine

Also Published As

Publication number	Publication date
US5605498A (en)	1997-02-25
DE69409327D1 (de)	1998-05-07
JPH07164230A (ja)	1995-06-27
DE69409327T2 (de)	1998-11-19
JP3618799B2 (ja)	2005-02-09
FR2711331A1 (fr)	1995-04-28
FR2711331B1 (fr)	1996-01-26
EP0654322B1 (de)	1998-04-01
ES2113624T3 (es)	1998-05-01

Publication	Publication Date	Title
EP1883499B1 (de)	2010-06-23	Verfahren und vorrichtung zur bearbeitung des umfangs einer zu einer brille gehörenden ophthalmischen linse
FR2553323A1 (fr)	1985-04-19	Procede et machine pour le biseautage ou rainurage d'une lentille ophtalmique
EP0291378A1 (de)	1988-11-17	Kontur-Abtastvorrichtung, insbesondere für Brillengestell
FR2611560A1 (fr)	1988-09-09	Perfectionnements aux machines a meuler et a biseauter les verres ophtalmiques
EP0654322B1 (de)	1998-04-01	Brillenglasrand-Schleifmaschine
EP0820837B1 (de)	2000-02-02	Maschine zum Schleifen optischer Gläser
FR2481635A1 (fr)	1981-11-06	Machine automatique a meuler et biseauter les verres de lunettes
EP1919663A1 (de)	2008-05-14	Tastfingersteuerverfahren zum ablesen der einfassung eines brillengestells
EP0603074B1 (de)	1996-09-04	Verfahren zur Kontrolle der Anpassung einer zu schleifenden Linse an ein Brillengestell auf einer Schleifmaschine
EP1807244A1 (de)	2007-07-18	Vorrichtung und verfahren zum einstellen der bohrrichtung eines bohrwerkzeugs für eine ophthalmische linse
EP0606034B1 (de)	1997-06-18	Ophtalmische Linsen Schleifmaschine
WO2007060329A1 (fr)	2007-05-31	Procédé et dispositif de détourage d'une lentille ophtalmique pour usiner le chant de la lentille suivant une courbe voulue
EP0995549B1 (de)	2004-04-14	Eich-Verfahren einer Brillenglas-Schleifmaschine und Eichkaliber zu dessen Ausführung
FR2706800A1 (de)	1994-12-30
EP2214865B1 (de)	2011-06-29	Vorrichtung zur korrektur der ätzung einer kontaktlinse und verfahren zur ätzung einer kontaktlinse
FR2490532A1 (fr)	1982-03-26	Dispositif destine a arrondir les coins de plaques de verre
EP2846969B1 (de)	2016-07-06	Verfahren zum ausschneiden einer mehrschichtigen ophthalmische linse
EP1993797B1 (de)	2014-05-07	Bohrverfahren für brillenglas zur erzielung der gewünschten form und grösse eines in dieses glas zu bohrenden loches
EP0337864A1 (de)	1989-10-18	Brillengestell-Träger für eine Reproduzier-Maschine
EP0483008B1 (de)	1994-01-05	Linsenausrichtgerät mit Drehtisch
EP0175164B1 (de)	1989-01-11	Vorrichtung um die axiale Position eines auf einer werkzeugmaschine zu bearbeitenden Werkstückes zu messen, insbesondere auf einer Schleifmaschine für äussere zylindrische Flächen
EP0502785B1 (de)	1994-02-16	Verfahren zum Abtasten der Form eines beliebigen, elastisch verformbaren Artikels, insbesondere zum Abtasten einer Brillengestellsöffnung
EP1601496A1 (de)	2005-12-07	Verfahren zur maschinellen bearbeitung einer ophthalmischen linse und bearbeitungsvorrichtung zur durchführung des verfahrens
FR2728965A1 (fr)	1996-07-05	Procede pour la lecture du contour d'un quelconque article, et appareil de lecture de contour correspondant, notamment pour monture de lunettes
FR2887168A1 (fr)	2006-12-22	Procede et dispositif de detourage biseaute d'une lentille ophtalmique de lunettes

Legal Events

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1995-04-07	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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EP0654322A1 - Brillenglasrand-Schleifmaschine - Google Patents

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Definitions

Landscapes

Applications Claiming Priority (2)

Publications (2)

Family

ID=9451970

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (6)

Citations (2)

Family Cites Families (11)

Patent Citations (2)

Cited By (1)

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