EP0096337B1 - Brillenglasrandschleifmaschine - Google Patents

Brillenglasrandschleifmaschine Download PDF

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Publication number
EP0096337B1
EP0096337B1 EP83105375A EP83105375A EP0096337B1 EP 0096337 B1 EP0096337 B1 EP 0096337B1 EP 83105375 A EP83105375 A EP 83105375A EP 83105375 A EP83105375 A EP 83105375A EP 0096337 B1 EP0096337 B1 EP 0096337B1
Authority
EP
European Patent Office
Prior art keywords
carriage
grinding
template
spectacle lens
grinding wheel
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
Application number
EP83105375A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096337A3 (en
EP0096337A2 (de
Inventor
Fritz Kötting
Günther Barwasser
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.)
Wernicke and Co GmbH
Original Assignee
Wernicke and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wernicke and Co GmbH filed Critical Wernicke and Co GmbH
Publication of EP0096337A2 publication Critical patent/EP0096337A2/de
Publication of EP0096337A3 publication Critical patent/EP0096337A3/de
Application granted granted Critical
Publication of EP0096337B1 publication Critical patent/EP0096337B1/de
Expired legal-status Critical Current

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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 invention relates to a spectacle lens edge grinding machine with a slide bearing the template counter bearing and the grinding wheel, which can be moved by spring force against the fixedly mounted spectacle lens and template holder shaft, or to a spectacle lens edge grinding machine with a carriage or support arm which supports the spectacle lens and template holder shaft stationary template counter bearing and the grinding wheel is movable.
  • Such a spectacle lens edge grinding machine is known from US-A-3 322 172. With it, the pressure of the lens against the stationary grinding wheel is applied by a pair of compression springs, which causes a largely constant pressure of the lens against the grinding wheel. Changing the grinding pressure during grinding is not intended.
  • the object of the invention is to improve the known spectacle lens edge grinding machine with the features of the preamble of the main claim in such a way that the grinding pressure, i.e. the pressure of the spectacle lens against the grinding wheel or vice versa can be varied within wide limits, furthermore this setting during grinding itself and the distance of the respective spectacle lens peripheral section to be ground from the spectacle lens axis of rotation and thus in the case of correction lenses the thickness of the lens at this section can accordingly take place automatically, that the eyeglass lens can continue to be lifted off the grinding wheel or the grinding wheel from the eyeglass lens at the moment and all of this can be achieved with means that are simple in construction and easy to use and to maintain.
  • the grinding pressure i.e. the pressure of the spectacle lens against the grinding wheel or vice versa
  • the invention which is specified in claims 1, 2, according to the arrangement of the template counter-holder, the grinding wheel and the spectacle lens and template holder shaft, provides that in the direction of movement of the slide on the side facing away from the spectacle lens and template holder shaft Tension spring pulling the slide in the direction of its initial position and on the side facing the spectacle lens and template holder shaft a tensile element which can be regulated in its tensile force acts on the slide or that in the direction of movement of the slide on the side facing away from the template counter bearing and the grinding wheel, the slide in the direction of its initial position pulling spring and on the side facing the template thrust bearing and the grinding wheel, a traction element that is adjustable in its tensile force acts on the slide.
  • the switchable traction element which can be regulated in its tensile force, is preferably an electromagnetic clutch with a chain, a belt or a belt attached to the support arm or the carriage, which can be wound onto the drum of the clutch or can be adjusted longitudinally by the latter.
  • the slide When the grinding machine is designed with a straight-moving slide, the slide is advantageously guided horizontally, and the chain, belt or belt engages on an intermediate carrier on which the slide can be freely displaced parallel to the grinding wheel and lens holder shaft.
  • the invention has the advantage that the grinding pressure is easily adjustable in a ratio of 1: 5. - By detecting the movement of the lens with the template or the movement of the grinding wheel with the template counter bearing and thus the distance of the respective lens peripheral section to be ground from the axis of rotation of the lens, the grinding pressure can correspond to the thickness of the peripheral lens section to be ground, which is automatically due to the Adaptation to the movement of the carriage can be done. Such differences in the thickness of the edge sections of the glass arise in the case of correction glasses with strong decentration or final shape deviating from the round shape, which is due to the spectacle frame.
  • Another advantage is that when the voltage on the electromagnetic clutch drops, the carriage is immediately reset and thus the grinding wheel is lifted off the spectacle lens or the spectacle lens is removed from the grinding wheel.
  • the grinding wheel and the template counter-holder are adjustable, whereas the spectacle lens and the template are fixed in place.
  • the spectacle lens edge grinding machine has the two-way adjustable carriage 1, which carries in its rear section at 2 a drive motor MS for the grinding wheel and in its front section has the grinding wheel shaft 3, which is driven by said motor via the chain or belt 3a becomes.
  • Parallel to the grinding wheel 4 the template counter bearing 5 is fixedly arranged on the slide.
  • the carriage 1 has two transverse axes 6, 7 which are displaceable in guide blocks 8, 8a transversely and therefore parallel to the shaft 3, so that the carriage can move in the direction of the double arrow K.
  • the guide blocks 8, 8a are mounted in pairs on two mutually parallel guide rods 9, which are fixedly connected to the machine frame at 10. As a result, the carriage can execute a movement in the direction of the double arrow S, which is above and below as the movement of the carriage which influences the grinding pressure.
  • the spectacle lens holder and template shaft 11 is arranged on the machine frame and is rotated by a motor, not shown, via the chain or the belt 12a.
  • the spectacle lens 12 On it on the one hand the spectacle lens 12 to be ground, on the other hand the template 13 is attached in a known manner.
  • the part of the shaft 11 holding the spectacle lens 12 is in this case divided into two half-waves, one of which is adjustable against the other half-wave and as a result the lens can be clamped between the two half-waves, which is known prior art.
  • an inelastic, but flexible drawstring 14 located parallel to the guide rods 9, engages laterally, the front end, which is located approximately at the level of the shaft 11, around the drum part 15 of a magnetic coupling 16 is wound, the drive part 17 of which is driven by a motor 19 via a shaft 18.
  • the winding part of the clutch 16 is connected via an electrical line 20 to a potentiometer 21, by means of which the voltage of the coil part of the clutch 16 can be adjusted. In this way, the tensile force of the edge 14 can be regulated.
  • the spectacle lens blank has a thickness m and a thickness n on its circumference and that when grinding in the direction of arrow L in the plus lens (illustration a), the section to be ground increases in thickness, while in the minus correction lens ( Representation b) the thickness of the spectacle lens decreases from its circumference towards the center.
  • FIG. 3 shows the scope of a modern spectacle lens 12, the distances R, R 1 , R 2 , R 3 of which differ greatly from the center of rotation or machine 24 of the lens. Accordingly, it can also be seen in connection with the explanations relating to FIG. 2 that, for example in the case of a plus correction lens (illustration 2a) at the level of the radius R, the lens has a greater thickness than in the case of R 1 and that the lens in the case of R 3 has a smaller thickness than has been recorded for R 2 . If the spectacle lens in FIG. 3 is a minus correction lens, the situation is reversed. - It can be seen from the above that the economical and time-saving grinding of modern spectacle lenses requires a different grinding pressure over the circumference of the spectacle lens.
  • the carriage 1 has a preferably non-contact sensor which scans the distances R to R 3 on the periphery of the spectacle lens and gives the result directly or indirectly to the coupling 16, which corresponds to the distances of the grinding wheel 4 from the center of rotation 24 ( Fig. 3) and thus the sizes R to R 3 are applied differently.
  • a spacing device can consist, for example, of two parts 26, 27 with a corresponding inductive or capacitive opposite 28 or in inductive or capacitive parts 29, 30 arranged on a guide rod 9, one part 26 or 29 for the adjustment of plus correction lenses and part 27 or 30 for Minus glasses is suitable, ie the one time an increase in force, the other time a reduction in the force exerted by the coupling 16 is brought about.
  • the invention is shown in Figure 1 on a grinding wheel, in which the grinding wheel and the template counter bearing are arranged on the movable carriage.
  • the spectacle lens 112 can be adjusted with the template 113 on the shaft 103 on the horizontally adjustable slide 101, while the grinding wheel 104 and the template counter bearing 105 are arranged on the shaft 111 or fixed on the machine frame.
  • the coupling 16 can exert a grinding pressure which can be varied within wide limits.
  • the springs 123 also suddenly bring the slide back into its initial position, so that the spectacle lens can be lifted off the grinding wheel at the moment.

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)
  • Eyeglasses (AREA)
EP83105375A 1982-06-09 1983-05-31 Brillenglasrandschleifmaschine Expired EP0096337B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823221713 DE3221713A1 (de) 1982-06-09 1982-06-09 Brillenglasrandschleifmaschine
DE3221713 1982-06-09

Publications (3)

Publication Number Publication Date
EP0096337A2 EP0096337A2 (de) 1983-12-21
EP0096337A3 EP0096337A3 (en) 1985-05-22
EP0096337B1 true EP0096337B1 (de) 1988-01-07

Family

ID=6165677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105375A Expired EP0096337B1 (de) 1982-06-09 1983-05-31 Brillenglasrandschleifmaschine

Country Status (5)

Country Link
US (1) US4637168A (enrdf_load_stackoverflow)
EP (1) EP0096337B1 (enrdf_load_stackoverflow)
JP (1) JPS5993260A (enrdf_load_stackoverflow)
DE (2) DE3221713A1 (enrdf_load_stackoverflow)
ES (1) ES522781A0 (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221713A1 (de) * 1982-06-09 1983-12-15 Wernicke & Co GmbH, 4000 Düsseldorf Brillenglasrandschleifmaschine
DE3409624A1 (de) * 1984-03-16 1985-09-26 Otto 4010 Hilden Helbrecht Schleifmaschine fuer die raender von brillenglaesern
DE3416034C2 (de) * 1984-04-30 1987-01-22 Helbrecht, Otto, 4010 Hilden Schleifmaschine für die Ränder von Brillengläsern
FR2570013B1 (fr) * 1984-09-11 1987-02-13 Essilor Int Machine a meuler pour le biseautage ou rainurage guide ou libre d'une lentille ophtalmique
DE3608957C2 (de) * 1986-03-18 1994-02-10 Wernicke & Co Gmbh Brillenglasrandschleifmaschine
EP0257258A1 (de) * 1986-08-28 1988-03-02 Wernicke & Co. GmbH Brillenglasrandschleifmaschine
US4760672A (en) * 1986-12-10 1988-08-02 Corning Glass Works Simultaneously grinding and polishing preforms for optical lenses
FR2652294B2 (fr) * 1988-11-22 1991-12-20 Briot Int Dispositif de reglage perfectionne du poids de meulage pour une machine a meuler les verres ophtalmiques.
FR2639276B1 (fr) * 1988-11-22 1991-01-04 Briot Int Dispositif de reglage du poids de meulage pour machine a meuler des verres ophtalmiques
FR2652775A1 (fr) * 1989-10-05 1991-04-12 Briot Int Dispositif perfectionne de reglage du poids de meulage sur une machine a meuler les verres ophtalmiques.
FR2711331B1 (fr) * 1993-10-19 1996-01-26 Essilor Int Machine à déborder pour verre de lunettes.
DE19616536C2 (de) * 1996-04-25 2000-01-27 Wernicke & Co Gmbh Verfahren und Brillenglasrandschleifmaschine zum Formschleifen des Umfangsrandes von Brillengläsern und ggf. zum anschließenden Facettenschleifen
DE19632340C2 (de) * 1996-08-10 2001-02-01 Wernicke & Co Gmbh Verfahren zum Formschleifen des Umfangsrandes von Brillengläsern und zum ggf. anschließenden Facettenschleifen
JP4008426B2 (ja) * 2004-04-09 2007-11-14 サクラ精機株式会社 カバーフィルムの貼着装置
CN102962742A (zh) * 2012-11-14 2013-03-13 扬州协鑫光伏科技有限公司 太阳能硅片倒角磨边机
CN112894538B (zh) * 2021-01-15 2022-11-01 湖北华鑫光电有限公司 一种光学镜片制造加工方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014314A (en) * 1961-12-26 Lens edger
US1395163A (en) * 1920-11-27 1921-10-25 Tatosian Martin Polishing-machine
US2297827A (en) * 1940-08-03 1942-10-06 John P Ellenbecker Stone cutting and finishing machine
US2671295A (en) * 1950-10-30 1954-03-09 Grady L Sharp Watch crystal grinding apparatus
DE1153288B (de) * 1954-11-01 1963-08-22 Pittsburgh Plate Glass Co Vorrichtung zum Beschleifen der Raender etwa rechteckiger, an den Ecken abgerundeter Glasscheiben
US3332172A (en) * 1964-11-16 1967-07-25 A I T Machine Co Inc Automatic edger
US3803772A (en) * 1970-08-14 1974-04-16 Cincinnati Milacron Heald Grinding machine
US3824741A (en) * 1970-09-28 1974-07-23 H Wilson Method and apparatus for traversing a cam follower
US3736704A (en) * 1971-05-17 1973-06-05 Cincinnati Milacron Heald Grinding machine
US3864878A (en) * 1972-03-13 1975-02-11 Wean United Inc Apparatus for machining pilger rolls and the like
US4014142A (en) * 1974-01-16 1977-03-29 Norton Company Method and apparatus for grinding at a constant metal removal rate
DE2517001A1 (de) * 1975-04-17 1976-10-21 Buderus Eisenwerk Verfahren und vorrichtung zur regelung des vorschubs einer schleifscheibe
US4176498A (en) * 1978-02-21 1979-12-04 Ait Industries, Inc. Apparatus for edging lenses
US4191263A (en) * 1978-07-26 1980-03-04 State of Minnesota as represented by the Commissioner of Natural Resources Peat sampling probe
DE3221713A1 (de) * 1982-06-09 1983-12-15 Wernicke & Co GmbH, 4000 Düsseldorf Brillenglasrandschleifmaschine

Also Published As

Publication number Publication date
ES8403351A1 (es) 1984-03-16
US4637168A (en) 1987-01-20
JPS5993260A (ja) 1984-05-29
EP0096337A3 (en) 1985-05-22
JPH0378220B2 (enrdf_load_stackoverflow) 1991-12-13
EP0096337A2 (de) 1983-12-21
ES522781A0 (es) 1984-03-16
DE3221713A1 (de) 1983-12-15
DE3375095D1 (en) 1988-02-11

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