EP0096337A2 - Machine for grinding spectacle glass edges - Google Patents

Machine for grinding spectacle glass edges Download PDF

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Publication number
EP0096337A2
EP0096337A2 EP83105375A EP83105375A EP0096337A2 EP 0096337 A2 EP0096337 A2 EP 0096337A2 EP 83105375 A EP83105375 A EP 83105375A EP 83105375 A EP83105375 A EP 83105375A EP 0096337 A2 EP0096337 A2 EP 0096337A2
Authority
EP
European Patent Office
Prior art keywords
spectacle lens
carriage
template
slide
grinding
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.)
Granted
Application number
EP83105375A
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German (de)
French (fr)
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EP0096337A3 (en
EP0096337B1 (en
Inventor
Fritz Kötting
Günther Barwasser
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Wernicke and Co GmbH
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Wernicke and Co GmbH
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Publication date
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Publication of EP0096337A2 publication Critical patent/EP0096337A2/en
Publication of EP0096337A3 publication Critical patent/EP0096337A3/en
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Publication of EP0096337B1 publication Critical patent/EP0096337B1/en
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    • 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 against the fixedly mounted spectacle lens and template holder shaft, or to an Erillenglas edge grinding machine with a carriage or support arm carrying the spectacle lens and template holder shaft, which is mounted against the stationary S stencil counter bearing and the grinding wheel is movable.
  • Such spectacle lens edge grinding machines are known. With them, the grinding pressure of the grinding wheel is applied to the periphery of the lens or the pressure of the lens on the stationary grinding wheel by gravity or spring forces.
  • known spectacle lens edge grinding machines in which the upper part carrying the spectacle lens and the template can be pivoted about a horizontal axis, the grinding pressure is determined by the weight generates this upper part, the grinding pressure being variable in that either an adjustable spring or an adjustable position is attached to the upper part.
  • the object of the invention is to improve these known spectacle lens edge grinding machines in such a way that the grinding pressure, i. H. the pressure of the spectacle lens against the grinding wheel or vice versa can be adjusted within wide limits, furthermore this setting takes place automatically during the grinding of even the thickness of the spectacle lens on the respective prism lens circumferential section to be processed, so that the removal of the spectacle lens from the grinding wheel or the grinding wheel of the spectacle lens can currently take place and all of this can be achieved with structurally simple and easy-to-use and maintainable means.
  • the invention provides according to the arrangement of the template counter, the grinding wheel and the spectacle lens and template holder shaft that in the direction of movement of the slide on the side facing away from the spectacle lens and template holder shaft, a spring element bringing the carriage into its initial position and on the spectacle lens - And stencil holder shaft facing side engages a scheltbaren and adjustable in its pulling element on the carriage or that in motion Direction of the slide on the side facing away from the template counter-bearing and the grinding wheel engages a spring element which brings the slide into its starting position and on the side facing the template counter-bearing and the grinding disk a switchable pulling element which can be regulated 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 fastened to the support arm or the slide, 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 in a ratio of 1: 5, d. H. from Z. B. 2 kg up to 10 kg is easily adjustable. - 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 peripheral lens section to be ground from the axis of rotation of the lens, the grinding pressure can be matched to the thickness of the peripheral lens section to be ground, d. H. the grinding pressure can be higher when grinding a thicker lens edge section and lower when grinding a thinner lens edge section, which can take place automatically due to the adaptation to the movement of the slide. 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 slide resets immediately and the grinding is lifted off disc from the lens or the lens 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 thus parallel to the shaft 3, so that the carriage can perform a movement 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 18 On it on the one hand the spectacle lens 18 to be ground, on the other hand the template 13 is attached in a known manner.
  • the part of the shaft 11 holding the Erillenglas 12 is here in divided into two half-waves, one of which is adjustable against the other half-wave and thereby the glass can be clamped between the two half-waves, which is known prior art.
  • an inelastic, but flexible drawstring 14 which is located parallel to the guide rods 9, engages laterally, with its front end, 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. This allows the tension of the belt 14 to 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 case of the ninus correction lens ( Representation b) the thickness of the spectacle lens decreases from its circumference towards the center.
  • Fig? the scope of a modern spectacle lens 12 can be seen, 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.
  • the slide 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.
  • Such a spacer 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 corrective lenses and part 27 or 30 are suitable for minus lenses. is, the one time an increase in force, the other time a reduction in the force exerted by the clutch 16 is effected.
  • FIG. 1 The invention is shown in FIG. 1 on a grinding wheel, in which the grinding wheel and the stencil counter-bearing are arranged on the movable carriage; in reversal of can genäß Fig. 4, the spectacle lens be adjusted 112 with the template 113 on the shaft 103 on the horizontal adjustable slide 101, while the grinding wheel 104 and the S c hablonenarnalager 105 on the shaft 111 pp.ortsfest arranged on the machine frame .
  • the coupling 16 can be used to vary the grinding pressure within wide limits be exercised.
  • the springs 123 also suddenly bring the carriage back into its starting position, so that the spectacle lens can be lifted off the grinding wheel at the moment.

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  • 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)

Abstract

Die Erfindung betrifft eine Brillenglasrandschleifmaschine mit einem das Schablonengegenlager und die Schleifscheibe tragenden Schlitten oder Tragarm, der gegen die ortsfest gelagerte Brillenglas- und Schablonenhalterwelle bewegbar ist bzw. eine Brillenglasrandschleifmaschine mit einem die Brillenglas- und Schablonenhalterwelle tragenden Schlitten oder Tragarm, der gegen das ortsfest gelagerte Schablonenlager und die Schleifscheibe bewegbar ist, um den Schleifdruck in weiten Grenzen variieren zu können und während des Schleifens an die Stärke des Brillenglases selbsttätig anzupassen, ist vorgesehen, daß in Bewegungsrichtung des Schlittens (1) auf der der Brillenglas- und Schablonenhalterwelle (11) abgekehrten Seite ein den Schlitten (1) in seine Ausgangsstellung bringendes Federelement (23) und an der der Brillenglasund Schablonenhalterwelle (11) zugekehrten Seite ein schaltbares und in seiner Zugkraft regulierbares Zugelement (14, 16) an dem Schlitten (1) angreift bzw. daß in Bewegungsrichtung des Schlittens (1) auf der dem Schablonengegenlager (5) und der Schleifscheibe (4) abgekehrten Seite ein den Schlitten in seine Ausgangsstellung bringendes Federelement (23) und an der dem Schablonengegenlager (5) und der Schleifscheibe (4) zugekehrten Seite ein schaltbares und in seiner Zugkraft regulierbares Zugelement (14, 16) an dem Schlitten (1) angreift.The invention relates to a spectacle lens edge grinding machine with a slide or support arm which supports the template counter bearing and the grinding wheel and is movable against the fixedly mounted spectacle lens and stencil holder shaft, and to an eyeglass lens edge grinding machine with a carriage or support arm which supports the spectacle lens and stencil holder shaft and which supports against the stationary bearing and the grinding wheel is movable in order to be able to vary the grinding pressure within wide limits and to adapt automatically to the thickness of the lens during grinding, it is provided that in the direction of movement of the slide (1) on the side facing away from the lens and template holder shaft (11) a spring element (23) which brings the slide (1) into its starting position and on the side facing the spectacle lens and template holder shaft (11) a switchable pull element (14, 16) with adjustable tensile force engages the slide (1) or that it moves Direction of the slide (1) on the side facing away from the template counter bearing (5) and the grinding wheel (4) is a spring element (23) bringing the slide into its starting position and on the side facing the template counter bearing (5) and the grinding wheel (4) a switchable one and the traction element (14, 16), which can be regulated in its tensile force, acts on the carriage (1).

Description

Die Erfindung bezieht sich auf eine Brillenglasrandschleifmaschine mit einem das Schablonengegenlager und die Schleifscheibe tragenden Schlitten ,der gegen die ortsfest gelagerte Brillenglas- und Schablonenhalterwelle bewegbar ist bzw. auf eine Erillenglasrandschleifmaschine mit einem die Brillenglas- und Schablonenhalterwelle tragenden Schlitten oder Tragarm, der gegen das ortsfest gelagerte Schablonen.gegenlager und die Schleifscheibe bewegbar ist.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 against the fixedly mounted spectacle lens and template holder shaft, or to an Erillenglas edge grinding machine with a carriage or support arm carrying the spectacle lens and template holder shaft, which is mounted against the stationary S stencil counter bearing and the grinding wheel is movable.

Derartige Brillenglasrandschleifnaschinen sind bekannt. Bei ihnen wird der Schleifdruck der Schleifscheibe auf den Umfang des Brillenglases oder der Andruck des Brillenglases an die ortsfest gelagerte Schleifscheibe durch Gravitation oder Federkräfte aufgebracht. Bei bekannten Brillenglasrandschleifmaschinen, bei denen der das Brillenglas und die Schablone tragende Oberteil um eine horizontale Achse schwenkbar ist, wird der Schleifdruck durch das Gewicht dieses Oberteils erzeugt, wobei der Schleifdruck dadurch variierbar ist, daß an dem Oberteil entweder eine einstellbare Feder oder aber ein in seiner Lage einstellbares Gewicht angebracht ist.Such spectacle lens edge grinding machines are known. With them, the grinding pressure of the grinding wheel is applied to the periphery of the lens or the pressure of the lens on the stationary grinding wheel by gravity or spring forces. In known spectacle lens edge grinding machines, in which the upper part carrying the spectacle lens and the template can be pivoted about a horizontal axis, the grinding pressure is determined by the weight generates this upper part, the grinding pressure being variable in that either an adjustable spring or an adjustable position is attached to the upper part.

Die Aufgabe der Erfindung besteht darin, diese bekannten Brillenglasrandschleifmaschinen dahingehend zu verbessern, daß der Schleifdruck, d. h. der Andruck des Brillenglases gegen die Schleifscheibe oder umgekehrt, in weiten Grenzen einstellbar ist, ferner diese Einstellung während des Schleifens selbst der Stärke des Brillenglases an dem jeweilig zu bearbeitenden Prillenglasumfangabschnitt selbsttätig erfolgt, daß weiterhin das Entfernen des Brillenglases von der Schleifscheibe bzw. der Schleifscheibe von dem Brillenglas momentan erfolgen kann und dies alles mit konstruktiv einfachen und leicht bedienbaren sowie zu wartenden Mitteln erzeilbar ist.The object of the invention is to improve these known spectacle lens edge grinding machines in such a way that the grinding pressure, i. H. the pressure of the spectacle lens against the grinding wheel or vice versa can be adjusted within wide limits, furthermore this setting takes place automatically during the grinding of even the thickness of the spectacle lens on the respective prism lens circumferential section to be processed, so that the removal of the spectacle lens from the grinding wheel or the grinding wheel of the spectacle lens can currently take place and all of this can be achieved with structurally simple and easy-to-use and maintainable means.

Zur Lösung dieser Aufgabe sieht die Erfindung entsprechend der Anordnung des Schablonengegenhalters, der Schleifscheibe und der Brillenglas- und Schablonenhalterwelle vor, daß in Bewegungsrichtung des Schlittens auf dem der Brillenglas- und Schablonenhalterwelle abgekehrten Seite ein den Schlitten in seine Ausgangsstellung bringendes Federelement und an der der Brillenglas- und Schablonenhalterwelle zugekehrten Seite ein scheltbares und in seiner Zugkraft regulierbares Zugelement an dem Schlitten angreift oder aber daß in Bewegungsrichtung des Schlittens auf der dem Schablonengegenlager und der Schleifscheibe abgekehrten Seite ein den Schlitten in seine Ausgangsstellung bringendes Federlement und an der dem Schablonengegenlager und der Schleifscheibe zugekehrten Seite ein schaltbares und in seiner Zugkraft regulierbares Zugelement an dem Schlitten angreift.To achieve this object, the invention provides according to the arrangement of the template counter, the grinding wheel and the spectacle lens and template holder shaft that in the direction of movement of the slide on the side facing away from the spectacle lens and template holder shaft, a spring element bringing the carriage into its initial position and on the spectacle lens - And stencil holder shaft facing side engages a scheltbaren and adjustable in its pulling element on the carriage or that in motion Direction of the slide on the side facing away from the template counter-bearing and the grinding wheel engages a spring element which brings the slide into its starting position and on the side facing the template counter-bearing and the grinding disk a switchable pulling element which can be regulated in its tensile force acts on the slide.

Vorzugsweise ist das schaltbare und in seiner Zugkraft regulierbare Zugelement eine elektromagnetische Kupplung mit einer an dem Tragarm oder dem Schlitten befestigten Kette, einem Riemen oder ein Band, die auf die Trommel der Kupplung aufwickelbar oder durch diese längsverstellbar sind.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 fastened to the support arm or the slide, which can be wound onto the drum of the clutch or can be adjusted longitudinally by the latter.

Bei der Ausbildung der Schleifmaschine mit einem geradlinig bewegten Schlitten ist dieser vorteilhafterweise horizontal geführt, und die Kette, der Riemen oder das Band greifen an an einem Zwischenträger an dem der Schlitten parallel zur Schleifscheiben- und zur Brillenglashalterwelle frei verschieblich ist.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.

Bei der Anwendung einer elektromagnetischen Kupplung ist diese von einem Potentiometer stufenlos regelbar ebenso wie bei geradliniger Bewegung des Schlittens oder seiner Zwischenträger diese Bewegung durch Taster oder berührungslos erfaßt und der jeweilig ermittelte Bewegungswert des Zwischenträgers oder Schlittens direkt auf die Kupplung, auf das Potentiometer oder einen Rechner gegeben wird. - Hierzu können an den Zwischenträgern oder an dem Schlitten induktive oder kapazitive Fühler für die Schleifdruckveränderung während des Schleifens von Gläsern und Korrekturgläsern angeordnet sein, die die selbsttätige Verstellung der Kupplung oder des Potentiometers bewirken.When using an electromagnetic clutch, this is infinitely adjustable by a potentiometer, just as when the carriage or its intermediate carrier moves in a straight line, this movement is detected by push buttons or without contact, and the movement value of the intermediate carrier or carriage determined in each case is directly on the clutch, on the potentiometer or on a computer is given. - You can do this at the Inductive or capacitive sensors for changing the grinding pressure during the grinding of glasses and correction glasses, which bring about the automatic adjustment of the coupling or the potentiometer, can be arranged between supports or on the slide.

Die Erfindung bringt den Vorteil, daß der Schleifdruck im Verhältnis 1:5, d. h. von z. B. 2 kg bis zu 10 kg leicht einstellbar ist. - Durch das Erfassen der Bewegung des Brillenglases mit der Schablone oder aber der Bewegung der Schleifscheibe mit dem Schablonengegenlager und damit des Abstandes des jeweiligen zu schleifenden Brillenglasumfangabschnittes von der Drehachse des Brillenglases kann der Schleifdruck der Stärke des zu schleifenden Brillenglasumfangabschnittes entsprochen werden, d. h. der Schleifdruck kann beim Schleifen eines dickeren Erillenglasrandabschnitts höher und beim Schleifen eines dünneren brillenglasrandabschnittes geringer werden, was selbsttätig aufgrund des Anpassens an die Bewegung des Schlittens erfolgen kann. Derartige Unterschiede in der Dicke der Randabschnitte des Glases ergeben sich bei Korrekturgläsern mit starker Dezentration oder von der runden Form abweichender Endform, die durch das Brillengestell bedingt ist.The invention has the advantage that the grinding pressure in a ratio of 1: 5, d. H. from Z. B. 2 kg up to 10 kg is easily adjustable. - 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 peripheral lens section to be ground from the axis of rotation of the lens, the grinding pressure can be matched to the thickness of the peripheral lens section to be ground, d. H. the grinding pressure can be higher when grinding a thicker lens edge section and lower when grinding a thinner lens edge section, which can take place automatically due to the adaptation to the movement of the slide. 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.

Desweiteren zeigt sich als Vorteil, daß beim Abfall der Spannung an der elektromagnetischen Kupplung ein sofortiges RUckstellen des Schlittens und damit des Abhebens der Schleifscheibe von dem Brillenglas oder des Brillenglases von der Schleifscheibe erfolgt.Another advantage is that when the voltage on the electromagnetic clutch drops, the slide resets immediately and the grinding is lifted off disc from the lens or the lens from the grinding wheel.

Auf der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Schleifscheibe schematisch dargestellt und zwar zeigt

  • Fig. 1 den in zwei Richtungen bweglichen Schlitten mit der Schleifscheibe und dem Gegenlager sowie dem ortsfest gelagerten Brillenglas und der Schablone,
  • Fig. 2 zwei Korrekturgläser (2a ein +Glas, 2b ein -Glas), an Hand welcher die Arbeitsweise der Maschine erläutert wird,
  • Fig. 3 ein Brillenglas mit stark und unterschiedlichen Abständen seiner Umfangsabschnitte von der Dreh- oder Maschinenachse und
  • Fig. 4 eine Ausführungsform, bei der das Brillenglas und die Schablone auf dem Schlitten und die Schleifscheibe und das Schablonengegenlager ortsfest angeordnet sind.
In the drawing, an embodiment of the grinding wheel according to the invention is shown schematically and shows
  • 1 shows the carriage movable in two directions with the grinding wheel and the counter bearing as well as the fixedly mounted spectacle lens and the template,
  • 2 two correction glasses (2a a + glass, 2b a glass), on the basis of which the operation of the machine is explained,
  • Fig. 3 is a spectacle lens with strong and different distances of its peripheral sections from the axis of rotation or machine and
  • Fig. 4 shows an embodiment in which the spectacle lens and the template on the carriage and the grinding wheel and the template counter bearing are arranged in a fixed position.

Bei der in Fig. 1 wiedergegebenen Ausführungsform der erfindungsgemäßen Brillenglasrandschleifmaschine ist die Schleifscheibe und der Schablonengegenhalter verstellbar, wohingegen das Brillenglas und die Schablone ortsfest gelagert sind. - Die Brillenglasrandschleifmaschine weist den in zwei Richtungen verstellbaren Schlitten 1 auf, der in seinem hinteren Abschnitt bei 2 einen Antriebsmotor MS für die Schleifscheibe trägt und in seinem vorderen Abschnitt die Schleifscheibenwelle 3 aufweist, die durch den genannten Motor über die Kette oder den Riemen 3a angetrieben wird. Parallel im Abstand zu der Schleifscheibe 4 ist auf dem Schlitten das Schablonengegenlager 5 fest angeordnet. - Der Schlitten 1 weist zwei Querachsen 6, 7 auf, die in Führungsblöcken 8, 8a quer und damit parallel zu der Welle 3 verschieblich sind, so daß der Schlitten in Richtung des Doppelpfeiles K eine Bewegung auszuführen vermag.In the embodiment of the spectacle lens edge grinding machine according to the invention shown in FIG. 1, 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 thus parallel to the shaft 3, so that the carriage can perform a movement in the direction of the double arrow K.

Die Führungsblöcke 8, 8a sind paarweise an zwei zueinander parallelen Führungsstangen 9 gelagert, die ortsfest bei 10 mit dem Maschinenrahmen verbunden sind. Hierdurch vermag der Schlitten eine Bewegung in Richtung des Doppelpfeiles S auszuführen, die vorstehend und nachstehend als die den Schleifdruck beeinflussende Bewegung des Schlittens ist.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.

Vor dem Schlitten 1 ist an dem Maschinenrahmen die Brillenglashalter- und Schablonenwelle 11 angeordnet, die durch einen nicht dargestellten Motor über die Kette oder den Riemen 12a in Drehung versetzt wird. Auf ihr ist einerseits das zu schleifende Brillenglas 18, andererseits die Schablone 13 in bekannter Weise angebracht. Der das Erillenglas 12 haltende Teil der Welle 11 ist hierbei in zwei Halbwellen unterteilt, von denen die eine gegen die andere Halbwelle verstellbar und hierdurch das Glas zwischen den beiden Halbwellen festklemmbar ist, was bekannter Stand der Technik ist.In front of the carriage 1, 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. On it on the one hand the spectacle lens 18 to be ground, on the other hand the template 13 is attached in a known manner. The part of the shaft 11 holding the Erillenglas 12 is here in divided into two half-waves, one of which is adjustable against the other half-wave and thereby the glass can be clamped between the two half-waves, which is known prior art.

An einem der hinteren Führungsblöckchen 8a, in dargestelltem Beispiel des linken Führungsblöckchen 8a, greift seitlich ein parallel zu den Führungsstangen 9 gelegenes, unelastisches, jedoch biegsames Zugband 14 an, das mit seinem vorderen, etwa auf Höhe der Welle 11 gelegenen Ende, um den Trommelteil 15 einer Magnetkupplung 16 gewunden ist, deren Antriebsteil 17 über eine Welle 18 von einem Motor 19 angetrieben ist. - Der Wicklungsteil der Kupplung 16 ist über eine elektrische Leitung 20 mit einem Potentiometer 21 verbunden, mit dessen Hilfe die Spannung des Spulenteils der Kupplung 16 einstellbar ist. Hierdurch kann die Zugkraft des Bandes 14 reguliert werden.On one of the rear guide blocks 8a, in the illustrated example of the left guide block 8a, an inelastic, but flexible drawstring 14, which is located parallel to the guide rods 9, engages laterally, with its front end, 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. This allows the tension of the belt 14 to be regulated.

An den beiden hinteren Blöckchen 8a greifen in Richtung des Bandes 14 und der beiden parallelen Führungsstangen 9 angeordnete Federn 22 an, die bestrebt sind, den Schlitten gegen das maschinenfeste Lager 23 zu ziehen. Diese Federn halten zunächst den Schlitten 1 in ihrer in Fig. 1 wiedergegebenen Stellung, in der die Schleifscheibe 4 und der Schablonengegenhalter 5 von dem ortsfest gelagerten Brillenglas 12 und der Schablone 13 im Abstand gelegen sind. Wird die Kupplung 16 beaufschlagt, so zieht der Trommelteil 15 der Kupplung 16, der entsprechenden Spannung entsprechend, den Schlitten 1 derart an, daß die Schleifscheibe 4 und das Gegenlager 5 an dem Brillenglas 12 bzw. der Schablone 13 zur Anlage kommen. Die Zugkraft des Bandes 14 kann hierbei in weiten Grenzen variiert werden.Springs 22 arranged in the direction of the belt 14 and the two parallel guide rods 9 act on the two rear blocks 8a, which strive to pull the slide against the machine-fixed bearing 23. These springs initially hold the carriage 1 in its position shown in FIG. 1, in which the grinding wheel 4 and the template counter-holder 5 are spaced apart from the fixedly mounted spectacle lens 12 and the template 13. If the clutch 16 is acted upon, the drum part 15 of the clutch 16 pulls corresponding to the corresponding voltage, the carriage 1 in such a way that the grinding wheel 4 and the counter bearing 5 come to rest on the spectacle lens 12 or the template 13. The tensile force of the belt 14 can be varied within wide limits.

In Fig. 2 ist in der Darstellung 2a ein Plus-Korrekturglas 12a, in Darstellung 2b ein Minus-Korrekturglas 12b gezeigt. Es ist erkennbar, daß der Brillenglasrohling an seinem Umfang eine Dicke m und eine Stärke n aufweist und daß beim Schleifen in Richtung des Pfeiles L beim Plus-Glas (Darstellung a) der zu schleifende Abschnitt in seiner Dicke zunimmt, während beim ninus-Korrekturglas (Darstellung b) die Dicke des Brillenglases von seinem Umfang gegen die Mitte abnimmt.2 shows a plus correction lens 12a in illustration 2a, and a minus correction lens 12b in illustration 2b. It can be seen that 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 case of the ninus correction lens ( Representation b) the thickness of the spectacle lens decreases from its circumference towards the center.

In Fig. ? ist der Umfang eines modernen Brillenglases 12 erkennbar, dessen Abstände R, R1, R2, R3 von dem Dreh- oder Maschinenmittelpunkt 24 des Glases stark unterschiedlich ist. Dementsprechend ist auch in Verbindung mit den Ausführungen zu Fig. 2 ersichtlich, daß beispielsweise bei einem Plus-Korrekturglas (Darstellung 2a) auf Höhe des Radius R das Brillenglas eine größere Dicke als bei R1 hat und daß bei R3 das Brillenglas eine geringere Dicke als bei R2 zu verzeichnen hat. Handelt es sich bei dem Brillenglas in Fig. 3 um ein Minus-Korrekturglas, liegen die Verhältnisse umgekehrt. - Aus Vorstehendem ist erkennbar, daß das wirtschaftliche und zeitsparende Schleifen moderner Brillengläser einen unterschiedlichen Schleifdruck über den Umfang des Brillenglases bedingt. Um dem Rechnung zu tragen, weist der Schlitten 1 einen vorzugsweise berührungslosen Fühler auf, der die Abstände R bis R3 am Brillenglasumfang abtastet und das Ergebnis direkt oder indirekt auf die Kupplung 16 gibt, die entsprechend den Abständen der Schleifscheibe 4 von den Drehmittelpunkt 24 (Fig. 3) und damit der Größen R bis R3 unter- schiedlich beaufschlagt wird. - Eine solche Abstandseinrichtung kann beispielsweise aus zwei Teilen 26, 27 mit einem entsprechenden induktivenjoder kapazitiven wirkenden Gegenteil 28 oder aber in an der einen Führungsstange 9 angeordneten induktiven oder kapazitiven Teilen 29, 30 bestehen, wobei der eine Teil 26 bzw. 29 für die Verstellung von Plus-Korrekturgläsern und der Teil 27 bzw. 30 für Minus-Gläser geeignet. ist, d. h. das eine Mal eine Zunahme der Kraft, das andere Mal eine Reduzierung der von der Kupplung 16 ausgeübten Kraft bewirkt wird.In Fig? the scope of a modern spectacle lens 12 can be seen, 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. - From the above it can be seen that the economical and time-saving grinding of modern glasses made a difference due to the grinding pressure over the circumference of the lens. In order to take this into account, the slide 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. Such a spacer 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 corrective lenses and part 27 or 30 are suitable for minus lenses. is, the one time an increase in force, the other time a reduction in the force exerted by the clutch 16 is effected.

Die Erfindung ist in Fig. 1 an einer Schleifscheibe wiedergegeben, bei der die Schleifscheibe und das Schablonengegenla-ger an dem beweglichen Schlitten angeordnet sind; in Umkehrung dessen kann genäß Fig. 4 das Brillenglas 112 mit der Schablone 113 auf der Welle 103 an dem horizontalen verstellbaren Schlitten 101 verstellt werden, während die Schleifscheibe 104 und das Schablonengegenlager 105 auf der Welle 111 bzw.ortsfest an der Maschinenrahmen angeordnet sind. In beiden Fällen kann mit Hilfe des Zugbandes 14 bzw. 114 durch die Kupplung 16 ein in weiten Grenzen variierbarer Schleifdruck ausgeübt werden. Bei Wegnahme der Spannung von der Kupplung 116 wird ebenfalls mit Hilfe der Federn 123 ein schlagartiges Zurückstellen des Schlittens in seine Ausgangsstellung bewirkt, so daß ein Abheben des Brillenglases von der Schleifscheibe momentan erfolgen kann.The invention is shown in FIG. 1 on a grinding wheel, in which the grinding wheel and the stencil counter-bearing are arranged on the movable carriage; in reversal of can genäß Fig. 4, the spectacle lens be adjusted 112 with the template 113 on the shaft 103 on the horizontal adjustable slide 101, while the grinding wheel 104 and the S c hablonengegenlager 105 on the shaft 111 bzw.ortsfest arranged on the machine frame . In both cases, with the aid of the tension band 14 or 114, the coupling 16 can be used to vary the grinding pressure within wide limits be exercised. When the voltage is removed from the coupling 116, the springs 123 also suddenly bring the carriage back into its starting position, so that the spectacle lens can be lifted off the grinding wheel at the moment.

Claims (7)

1) Brillenglasrandschleifmaschine mit einem das Schablonengegenlager (5) und die Schleifscheibe (4) tragenden Schlitten (1), der gegen die ortsfest gelagerte Brillenglas- und Schablonenhalterwelle (11) bewegbar ist, dadurch gekennzeichnet, daß in Bewegungsrichtung des Schlittens (1) auf dem der Brillenglas- und Schablonenhalterwelle (11) abgekehrten Seite ein den Schlitten (1) in seine Ausgangsstellung bringendes Federelement (23) und an der der Brillenglas- und Schablonenhalterwelle (11) zugekehrten Seite ein schaltbares und in seiner Zugkraft regulierbares Zugelement (16) an dem Schlitten (1) angreift.1) spectacle lens edge grinding machine with a stencil counter bearing (5) and the grinding wheel (4) carrying carriage (1), which can be moved against the fixedly mounted spectacle lens and stencil holder shaft (11), characterized in that in the direction of movement of the carriage (1) on the the side facing away from the spectacle lens and template holder shaft (11) has a spring element (23) which brings the carriage (1) into its starting position, and on the side facing the spectacle lens and template holder shaft (11) there is a switchable traction element (16) on the side, which is adjustable in terms of its tensile force Sled (1) attacks. 2) Brillenglasrandschleifmaschine mit einem die Brillenglasund Schablonenhalterwelle (103) tragenden Schlitten (101), der gegen das ortsfest gelagerte Schablonengegenlager (105) und die Schleifscheibe (104) bewegbar ist, dadurch gekennzeichnet, daß in Bewegungsrichtung des Schlittens (101) auf dem dem Schablonengegenlager (105) und der Schleifscheibe (104) abgekehrten Seite ein dem Schlitten (101) in seine Ausgangsstellung bringendes Federelement (123) und an der dem Schablonengegenlager (105) und der Schleifscheibe (104) zugekehrten Seite ein schaltbares und in seiner Zugkraft regulierbares Zugelement (116) an dem Schlitten (101) angreift.2) spectacle lens edge grinding machine with a carriage (101) carrying the spectacle lens and template holder shaft (103), which can be moved against the stationary template counter bearing (105) and the grinding wheel (104), characterized in that in the direction of movement of the carriage (101) on the template counter bearing (105) and the grinding disc (104) facing away from a spring element (123) bringing the slide (101) into its starting position and on the side facing the template counter bearing (105) and the grinding wheel (104) a switchable and adjustable in its tensile force pulling element (116) on the slide (101) attacks. 3) Brillenglasrandschleifmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das schaltbare und in seiner Zugkraft regulierbare Zugelement (16, 116) eine elektromagnetische Kupplung mit einer an dem Tragarm oder dem Schlitten (1, 101) befestigten Kette, einem Riemen, Band (14, 114) od. dgl. ist, die auf die Trommel (15, 115) der Kupplung (16, 116) aufwickelbar oder durch diese längsverstellbar ist.3) spectacle lens edge grinding machine according to claim 1 or 2, characterized in that the switchable and adjustable in its tensile force tensile element (16, 116) an electromagnetic clutch with a chain attached to the support arm or the carriage (1, 101), a belt, belt ( 14, 114) or the like, which can be wound onto the drum (15, 115) of the coupling (16, 116) or can be adjusted longitudinally by the latter. 4) Brillenglasrandschleifmaschine nach Anspruch 1 oder 2 und einem geradlinig bewegten Schlitten, dadurch gekennzeichnet, daß der Schlitten (1, 101) horizontal geführt ist und die Kette, der Riemen oder das Band (14, 114) od. dgl. an einem Zwischenträger (8, 8a) angreift, an dem der Schlitten (1, 101) parallel zur Schleifscheiben- und zur Brillenglashalterwelle frei verschieblich ist.4) spectacle lens edge grinding machine according to claim 1 or 2 and a straight moving carriage, characterized in that the carriage (1, 101) is guided horizontally and the chain, the belt or the belt (14, 114) or the like on an intermediate carrier ( 8, 8a), on which the slide (1, 101) is freely displaceable parallel to the grinding wheel shaft and the spectacle lens holder shaft. 5) Brillenglasrandschleifmaschine nach Anspruch 1 oder 2 und einem der Ansprüche 3 und 4, dadurch gekennzeichnet, daß die elektromagnetische Kupplung (16, 116) von einem Potentiometer (21) regelbar ist.5) spectacle lens edge grinding machine according to claim 1 or 2 and one of claims 3 and 4, characterized in that the electromagnetic clutch (16, 116) by one Potentiometer (21) is adjustable. 6) Erillenglasrandsehleii'maschine nach Anspruch 4 und 5, dadurch gekennzeichnet, daß die geradlinige Bewegung des Schlittens (1, 101) oder seiner Zwischenträger (8, 8a) durch Taster oder berührungslos erfaßt und der jeweilig ermittelte Bewegungswert des Zwischenträgers oder Schlittens direkt auf die Kupplung (16, 116), auf das Potentiometer (21) oder einen Rechner gegeben wird.6) Erillenglasrandsehleii'maschine according to claim 4 and 5, characterized in that the rectilinear movement of the carriage (1, 101) or its intermediate carrier (8, 8a) detected by buttons or contactless and the respective determined movement value of the intermediate carrier or carriage directly on the Coupling (16, 116), the potentiometer (21) or a computer is given. 7) Brillenglasrandschleifmaschine nach Anspruch 6, dadurch gekennzeichnet, daß der Zwischenträger (8, 8a) oder an dem Schlitten (1, 101) induktive oder kapazitive Fühler für die Schleifdruckveränderung während des Schleifens von Gläsern und Korrekturgläsern angeordnet sind, die die selbsttätige Verstellung der Kupplung (16, 116) oder des Potentiometers (21) bewirken.7) spectacle lens edge grinding machine according to claim 6, characterized in that the intermediate carrier (8, 8a) or on the carriage (1, 101) inductive or capacitive sensors for the change in grinding pressure during the grinding of glasses and correction glasses are arranged, which the automatic adjustment of the clutch (16, 116) or the potentiometer (21).
EP83105375A 1982-06-09 1983-05-31 Machine for grinding spectacle glass edges Expired EP0096337B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3221713 1982-06-09
DE19823221713 DE3221713A1 (en) 1982-06-09 1982-06-09 EYEWEAR EDGE GRINDING MACHINE

Publications (3)

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

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EP83105375A Expired EP0096337B1 (en) 1982-06-09 1983-05-31 Machine for grinding spectacle glass edges

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US (1) US4637168A (en)
EP (1) EP0096337B1 (en)
JP (1) JPS5993260A (en)
DE (2) DE3221713A1 (en)
ES (1) ES522781A0 (en)

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FR2639276A1 (en) * 1988-11-22 1990-05-25 Briot Int GRINDING WEIGHT ADJUSTING DEVICE FOR GRINDING MACHINE FOR OPHTHALMIC GLASSES
FR2652294A2 (en) * 1988-11-22 1991-03-29 Briot Int Improved device for adjusting the grinding weight for a machine for grinding ophthalmic lenses
FR2652775A1 (en) * 1989-10-05 1991-04-12 Briot Int Improved device for adjusting the grinding weight on a machine for grinding ophthalmic lenses
EP0803325A2 (en) * 1996-04-25 1997-10-29 Wernicke & Co. GmbH Shaped grinding process for the circumferential edge of spectacle lenses and if necessary subsequently bevelling grinding and spectacle lens edge grinding machine
DE19632340C2 (en) * 1996-08-10 2001-02-01 Wernicke & Co Gmbh Process for shape grinding of the peripheral edge of spectacle lenses and for subsequent facet grinding if necessary

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DE3221713A1 (en) * 1982-06-09 1983-12-15 Wernicke & Co GmbH, 4000 Düsseldorf EYEWEAR EDGE GRINDING MACHINE
DE3409624A1 (en) * 1984-03-16 1985-09-26 Otto 4010 Hilden Helbrecht Grinding machine for the rims of spectacle lenses
DE3416034A1 (en) * 1984-04-30 1985-11-07 Helbrecht, Otto, 4010 Hilden GRINDING MACHINE FOR THE EDGES OF EYE GLASSES
FR2570013B1 (en) * 1984-09-11 1987-02-13 Essilor Int GRINDING MACHINE FOR THE GUIDED OR FREE BEVELING OR GROOVING OF AN OPHTHALMIC LENS
DE3608957C2 (en) * 1986-03-18 1994-02-10 Wernicke & Co Gmbh Spectacle lens edge grinding machine
EP0257258A1 (en) * 1986-08-28 1988-03-02 Wernicke & Co. GmbH Grinding machine for edging spectacle glasses
US4760672A (en) * 1986-12-10 1988-08-02 Corning Glass Works Simultaneously grinding and polishing preforms for optical lenses
FR2711331B1 (en) * 1993-10-19 1996-01-26 Essilor Int Overflow machine for spectacle lenses.
JP4008426B2 (en) * 2004-04-09 2007-11-14 サクラ精機株式会社 Cover film sticking device
CN102962742A (en) * 2012-11-14 2013-03-13 扬州协鑫光伏科技有限公司 Chamfering edge grinding machine for solar wafer
CN112894538B (en) * 2021-01-15 2022-11-01 湖北华鑫光电有限公司 Optical lens manufacturing and processing method

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639276A1 (en) * 1988-11-22 1990-05-25 Briot Int GRINDING WEIGHT ADJUSTING DEVICE FOR GRINDING MACHINE FOR OPHTHALMIC GLASSES
FR2652294A2 (en) * 1988-11-22 1991-03-29 Briot Int Improved device for adjusting the grinding weight for a machine for grinding ophthalmic lenses
FR2652775A1 (en) * 1989-10-05 1991-04-12 Briot Int Improved device for adjusting the grinding weight on a machine for grinding ophthalmic lenses
EP0803325A2 (en) * 1996-04-25 1997-10-29 Wernicke & Co. GmbH Shaped grinding process for the circumferential edge of spectacle lenses and if necessary subsequently bevelling grinding and spectacle lens edge grinding machine
DE19616536A1 (en) * 1996-04-25 1997-11-06 Wernicke & Co Gmbh Process and eyeglass lens grinding machine for shape grinding of the peripheral edge of eyeglass lenses and for subsequent facet grinding if necessary
EP0803325A3 (en) * 1996-04-25 1998-01-14 Wernicke & Co. GmbH Shaped grinding process for the circumferential edge of spectacle lenses and if necessary subsequently bevelling grinding and spectacle lens edge grinding machine
US5993294A (en) * 1996-04-25 1999-11-30 Wernicke & Co. Gmbh Method and spectacle lens grinding machine for shape grinding the circumferential edge of spectacle lenses and optionally for subsequently grinding a facet
DE19616536C2 (en) * 1996-04-25 2000-01-27 Wernicke & Co Gmbh Process and eyeglass lens grinding machine for shaping the peripheral edge of eyeglass lenses and possibly for subsequent facet grinding
DE19632340C2 (en) * 1996-08-10 2001-02-01 Wernicke & Co Gmbh Process for shape grinding of the peripheral edge of spectacle lenses and for subsequent facet grinding if necessary

Also Published As

Publication number Publication date
ES8403351A1 (en) 1984-03-16
EP0096337A3 (en) 1985-05-22
EP0096337B1 (en) 1988-01-07
ES522781A0 (en) 1984-03-16
US4637168A (en) 1987-01-20
DE3375095D1 (en) 1988-02-11
DE3221713A1 (en) 1983-12-15
JPS5993260A (en) 1984-05-29
JPH0378220B2 (en) 1991-12-13

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