EP1094917A1 - Holding device for a spectacle glass - Google Patents

Holding device for a spectacle glass

Info

Publication number
EP1094917A1
EP1094917A1 EP00929414A EP00929414A EP1094917A1 EP 1094917 A1 EP1094917 A1 EP 1094917A1 EP 00929414 A EP00929414 A EP 00929414A EP 00929414 A EP00929414 A EP 00929414A EP 1094917 A1 EP1094917 A1 EP 1094917A1
Authority
EP
European Patent Office
Prior art keywords
receiving device
spectacle lens
spherical cap
base
raw glass
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
EP00929414A
Other languages
German (de)
French (fr)
Other versions
EP1094917B1 (en
Inventor
Ralf Werner
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 EP1094917A1 publication Critical patent/EP1094917A1/en
Application granted granted Critical
Publication of EP1094917B1 publication Critical patent/EP1094917B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/005—Blocking means, chucks or the like; Alignment devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
    • B24B9/146—Accessories, e.g. lens mounting devices

Definitions

  • the invention relates to the use of a receiving device for an eyeglass lens for inserting and removing the eyeglass lens in or from a container and / or for attaching and removing to or from an eyeglass lens holding shaft of an eyeglass lens edge processing machine by means of a handling device
  • Such a recording device is described in connection with a system for processing the peripheral edge and / or an optical surface of spectacle lenses in DE 44 14 784 C2 by the same applicant.
  • a raw glass is first inserted into an opto-electronic detection device by means of a handling device, which has an electronic image processing and evaluation system for recognizing used markings such as points, crosses, notches on the edge of the raw glass or the location of an existing near part.
  • Signals are transmitted from the electronic image processing and evaluation system of the opto-electronic recognition device to a control device for the handling device, so that the raw glass can be inserted into a holder, in particular an eyeglass holding shaft of an eyeglass lens processing machine, by means of the handling device
  • the handling device has a movable pick-up device with a single suction device for introducing the raw glass into the detection device and a plurality of curved suction devices for transferring the raw glass from the detection device into the spectacle lens edge processing machine.
  • the suction devices are arranged on a ring segment that can be rotated relative to the receiving device , the axis of rotation of which is perpendicular to the individual suction cups.
  • a raw glass can be gripped in the area of the edge and placed on a three-point support of the opto-electronic detection device on or in the spectacle lens holding shaft of the spectacle lens edge processing machine, the middle area around the optical axis of the raw lens around to attach the soft elastic head to the swivel arm of the opto-electronic detection device or to insert it into the lens holding shaft in the lens edge machine remains free
  • the suction cups can be subjected to negative pressure to hold the raw glass.
  • the central suction cup on the holding device serves to close a raw glass out of a container remove and place on the three-point support of the opto-electronic detection device, while the suction cups arranged on the ring segment grip an eyeglass blank from above or below on the three-point support and insert it into the spectacle lens holding shaft, which ensures that there is no obstruction by the guide rod with the soft elastic Head or can enter through the lens holder shaft
  • a raw lens can also be inserted into the lens holder shaft by means of the central suction device if it is ensured that the lens is first held on one side on the lens holder shaft and if the lens holder shaft can be moved so far apart is that the receiving device can move into this area and a raw glass can also be inserted by means of this suction device
  • the invention is based on the problem of creating a receiving device which is suitable for receiving a spectacle lens by means of a central suction device and inserting it precisely into a position in a spectacle lens holding shaft, in particular exactly axially with respect to the optical surface of the raw lens opposite the receiving device, this receiving device thus should be designed so that it can be used with conventional spectacle lens edge processing machines, the spectacle lens holding shaft need not be adapted to the receiving device
  • a receiving device which consists of a base held by the handling device with a depression, a controllable negative pressure connection on the depression, a spherical cap arranged in the depression, tightly fitting against an annular surface of the depression with an opening for depression and one Sealing area on the edge of the spherical cap for contact with an optical surface of the spectacle lens, for inserting and removing the spectacle lens in or from a container and / or for attaching and removing to or from a spectacle lens holding shaft in a lens processing machine by means of a handling device that holds the base
  • the spherical cap is placed on an optical surface of a raw glass with the negative pressure application switched off, it adapts to any angular position of this optical surface, while the opposite optical surface maintains its position. If the negative pressure application is switched on, the raw glass is held in the sealing area at the edge of the spherical spherical cap, while the spherical cap is pulled against the annular surface of the recess in the base and is held in this position due to the friction between the annular surface of the recess and the complementary surface of the spherical cap.
  • the raw glass is brought between the separated halves of a spectacle lens holding shaft in a spectacle lens edge processing machine by means of the handling device the raw glass with its free Attach the surface precisely and coaxially to the axis of this spectacle lens holding shaft and fasten it there in a suitable manner.
  • This can be done by moving the raw lens with the free optical surface directly against a clamping sleeve on this half of the spectacle lens holding shaft that can be pressurized and holding it by applying negative pressure it is possible to provide the optical surface of the raw glass opposite the receiving device in a centering device with a customary block or suction device that can be inserted in the correct position and coaxially into a corresponding clamping sleeve on the corresponding half of the spectacle lens holding shaft.
  • the ring surface of the recess in the base can be designed such that there is a linear contact of the surface of the spherical cap.
  • the spherical cap can advantageously be fastened movably to the base by means of a mushroom-shaped holder which is guided through the opening, so that it cannot be lost when the negative pressure is released
  • the spherical cap can be made entirely of an elastic plastic material, but preferably has a soft lip seal in the sealing area, which ensures good adaptation and sealing to a non-spherical optical surface of the raw glass.
  • the dimensions of the base with the spherical cap arranged therein are only insignificantly larger than that of a conventional block or nipple, so that the receiving device according to the invention with a raw glass can be easily moved into the area of the separated halves of the spectacle lens holding shaft This eccentric arrangement of the retaining bolt ensures that the area of the spectacle lens retaining shaft remains completely free of elements of the handling device
  • Fig. 1 is a schematic sectional view of a housing part
  • Eyeglass lens edge grinding machine with the grinding space and an eyeglass lens holding shaft arranged therein
  • Fig. 2 is an enlarged sectional view of the receiving device
  • a spectacle lens edge processing machine Of a spectacle lens edge processing machine, only one housing area 1 is shown in section, which shows a machining space 2 for a raw lens and the halves 3, 7 of a spectacle lens holding shaft.
  • the axially immovable, rotatable part 3 is referred to as a centering shaft and carries a clamping sleeve 4 at its free end can be pressurized via an axial bore 5 in the centering shaft 3
  • a vacuum connection 6 is provided on the housing 1 in the area of the bearing of the centering shaft 3.
  • the second half 7 of the spectacle lens holding shaft is arranged, which is referred to as the clamping shaft and Is axially displaceable
  • a ball adapter 8 is arranged with a soft support ring.
  • the surface of the raw glass 24 facing the clamping sleeve 4 has its axis exactly coaxial with the axis of the centering shaft 3 when the raw glass 24 is attached to the clamping sleeve 4, irrespective of the angular position of the surface of the raw glass 24 by the receiving device 10 is held, occupies
  • a block or suction device 25 is attached to the optical surface of the raw glass 24 opposite the receiving device 10 by means of a conventional centering device, and its axis also runs coaxially with the axis of the centering shaft 3 when the handling device 9 also attaches the raw glass to the clamping sleeve 4 the block or suction device 25 can be held in the clamping sleeve 4 by negative pressure if it is sealed in a suitable manner with respect to the clamping sleeve 4, since in this way a secure mounting on the centering shaft 3 is already ensured if the receiving device 10 is released by releasing the negative pressure and before the ball adapter 8 is pressed against the raw glass 24 by axial movement of the tensioning shaft 7
  • the holding device 10 is shown in FIG. 2 on an enlarged scale and consists of a base 11 with a depression 12.
  • the base 11 has an annular surface 13 which is shaped in a complementary manner to an outer spherical cap surface 19 of a spherical cap 17
  • the base 11 has a plate-shaped widening 23, on the one edge region of which a holding bolt 15 is fastened.
  • the handling device 9 engages on this holding bolt 15.
  • a radial bore 14 leads to an axial bore 16 in the retaining bolt 15 from the recess 12 , 16, the depression 12 can be pressurized in a controlled manner.
  • a spherical cap 17 is inserted into the recess 12, the spherical cap surface 19 of which rests sealingly on the annular surface 13.
  • the spherical cap 17 is guided by a mushroom-shaped holder 22 which passes through an opening 18 in the spherical cap 17 is held on the base 11.
  • An edge 20 of the spherical cap 17 is provided with an annular, soft lip seal 21
  • the raw glass 24 provided with a block or suction device 25 in a conventional centering device is, for example, arranged horizontally in a container from which it is to be removed by means of the receiving device 10.
  • the block or suction device 25 is inserted into a holder in the container, which determines the position of the block or sucker 25 and the optical surface of the raw glass 24 to which the block or sucker 25 is attached
  • the optical surface of the raw glass 24 opposite the block or sucker 25, to which the receiving device 10 is to be attached can have a different angular position, which may be due to the fact that the raw glass 24 is provided with a prismatic or cylindrical cut
  • the spherical cap 17 adapts to the angular position of this optical surface, while the relevant position of the block or suction pad 25 or the optical surface against which this block or suction pad 25 rests remains unchanged
  • the raw glass 24 can now, as already described with reference to FIG. 1, be attached to the clamping sleeve 4 of the centering shaft 3 and is also held there securely by negative pressure. After the negative pressure has been removed from the receiving device 10, it can be removed from the area of the centering shaft 3 and the move axially displaceable clamping shaft 7, after which the ball adapter 8 with the support clamping ring is moved against the raw glass 24.
  • the ball adapter 8 like the spherical cap 17, adapts to the angular position of the optical surface of the raw glass 24 against which this ball adapter 8 is pressed, so that Even when the raw glass 24 is clamped between the centering shaft 3 and the clamping shaft 7, there is no change in the angular position of the optical surface of the raw glass 24 which faces the clamping sleeve 24
  • the raw glass 24 can also be attached to the clamping sleeve 4 without prior attachment of a block or suction device 25, if this is provided with an annular seal, as has already been described with reference to the spherical cap 17. In this case too, the angular position is that of the clamping sleeve 4 adjacent surface of the raw glass 24 clearly determined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The invention relates to a holding device (10) for a spectacle glass (24), for introducing the spectacle glass into or removing it from a container and/or for placing the spectacle glass on or removing it from a spectacle glass holding shaft of a spectacle glass edge machining device. The inventive device comprises a handling device consisting of a socket (11) which is held by the handling device and which has a hollow section (12), a controlled vacuum connection (14, 16) on said hollow section (12), a spherical cap (17) that is located in the hollow part and rests closely against a ring surface of the hollow part and has an opening (18) for deepening, and a sealing area (20) on the edge of the spherical cap for placing on an optical surface of the spectacle glass (24).

Description

"Aufnahmevorrichtung für ein Brillenglas""Holding device for a spectacle lens"
Die Erfindung betrifft die Verwendung einer Aufnahmevorrichtung für ein Brillenglas zum Einsetzen und Entnehmen des Brillenglases in bzw aus einem Behalter und/oder zum Ansetzen und Entnehmen an bzw aus einer Brillenglashaltewelle einer Brillenglasrandbearbeitungsmaschine mittels eines HandhabungsgerätsThe invention relates to the use of a receiving device for an eyeglass lens for inserting and removing the eyeglass lens in or from a container and / or for attaching and removing to or from an eyeglass lens holding shaft of an eyeglass lens edge processing machine by means of a handling device
Eine derartige Aufnahmevorrichtung ist im Zusammenhang mit einer Anlage zum Bearbeiten des Umfangsrandes und/oder einer optischen Oberflache von Brillenglasern in der DE 44 14 784 C2 derselben Anmelderin beschrieben Bei dieser Anlage wird ein Rohglas mittels eines Handhabungsgeräts zunächst in eine opto-elektronische Erkennungseinrichtung eingelegt, die ein elektronisches Bildverarbeitungs- und Auswertesystem zum Erkennen von gebrauchlichen Markierungen wie Punkte, Kreuze, Kerben am Rand des Rohglases oder die Lage eines vorhandenen Nahteils aufweist Von dem elektronischen Bildverarbeitungs- und Auswertesystem der opto-elektronischen Erkennungseinrichtung werden Signale in eine Steuervorrichtung für das Handhabungsgerät übermittelt, so daß sich das Rohglas mittels des Handhabungsgeräts positionsgenau in eine Halterung, insbesondere eine Brillenglashaltewelle einer Brillenglasrandbearbeitungsmaschine, einsetzen laßtSuch a recording device is described in connection with a system for processing the peripheral edge and / or an optical surface of spectacle lenses in DE 44 14 784 C2 by the same applicant. In this system, a raw glass is first inserted into an opto-electronic detection device by means of a handling device, which has an electronic image processing and evaluation system for recognizing used markings such as points, crosses, notches on the edge of the raw glass or the location of an existing near part. Signals are transmitted from the electronic image processing and evaluation system of the opto-electronic recognition device to a control device for the handling device, so that the raw glass can be inserted into a holder, in particular an eyeglass holding shaft of an eyeglass lens processing machine, by means of the handling device
Für das Manipulieren des Rohglases weist das Handhabungsgerät eine bewegliche Aufnahmevorrichtung mit einem einzelnen Sauger zum Einfuhren des Rohglases in die Erkennungseinrichtung und mehrere bogenförmig angeordnete Sauger zum Überfuhren des Rohglases von der Erkennungsvorrichtung in die Brillenglasrandbearbeitungsmaschine auf Die Sauger sind dabei an einem gegenüber der Aufnahmevorrichtung drehbaren Ringsegment angeordnet, dessen Drehachse senkrecht zu den einzelnen Saugern steht Mittels der bogenförmig angeordneten Sauger laßt sich ein Rohglas im Bereich des Randes ergreifen und auf eine Dreipunktauflage der opto-elektronischen Erkennungseinrichtung auf- bzw in die Brillenglashaltewelle der Brillenglasrandbearbeitungsmaschine einsetzen, wobei der mittlere Bereich um die optische Achse des Rohglases herum zum Ansetzen des weichelastischen Kopfes am Schwenkarm der opto-elektronischen Erkennungseinrichtung bzw zum Einsetzen in die Brillenglashaltewelle in der Brillenglasrandbearbeitungsmaschine frei bleibtTo manipulate the raw glass, the handling device has a movable pick-up device with a single suction device for introducing the raw glass into the detection device and a plurality of curved suction devices for transferring the raw glass from the detection device into the spectacle lens edge processing machine. The suction devices are arranged on a ring segment that can be rotated relative to the receiving device , the axis of rotation of which is perpendicular to the individual suction cups. By means of the curved suction cups, a raw glass can be gripped in the area of the edge and placed on a three-point support of the opto-electronic detection device on or in the spectacle lens holding shaft of the spectacle lens edge processing machine, the middle area around the optical axis of the raw lens around to attach the soft elastic head to the swivel arm of the opto-electronic detection device or to insert it into the lens holding shaft in the lens edge machine remains free
Die Sauger sind zum Halten des Rohglases mit Unterdruck beaufschlagbar Der zentrische Sauger an der Aufnahmevorrichtung dient dazu, ein Rohglas aus einem Behalter zu entnehmen und auf die Dreipunktauflage der opto-elektronischen Erkennungseinrichtung aufzusetzen, wahrend die an dem Ringsegment angeordneten Sauger einen Brillenglasrohling von oben oder von unten auf der Dreipunktauflage liegend ergreifen und in die Brillenglashaltewelle einsetzen, wodurch gewahrleistet ist, daß keine Behinderung durch die Fuhrungsstange mit dem weichelastischen Kopf oder durch die Brillenglashaltewelle eintreten kann Es wird indessen auch erwähnt, daß sich ein Rohglas auch mittels des zentrischen Saugers in die Brillenglashaltewelle einsetzen laßt, wenn dafür gesorgt ist, daß das Rohglas zunächst einseitig an der Brillenglashaltewelle gehalten wird und wenn die Brillenglashaltewelle so weit auseinanderfahrbar ist, daß sich die Aufnahmevorrichtung in diesen Bereich bewegen und sich ein Rohglas auch mittels dieses Saugers einsetzen laßtThe suction cups can be subjected to negative pressure to hold the raw glass. The central suction cup on the holding device serves to close a raw glass out of a container remove and place on the three-point support of the opto-electronic detection device, while the suction cups arranged on the ring segment grip an eyeglass blank from above or below on the three-point support and insert it into the spectacle lens holding shaft, which ensures that there is no obstruction by the guide rod with the soft elastic Head or can enter through the lens holder shaft It is also mentioned, however, that a raw lens can also be inserted into the lens holder shaft by means of the central suction device if it is ensured that the lens is first held on one side on the lens holder shaft and if the lens holder shaft can be moved so far apart is that the receiving device can move into this area and a raw glass can also be inserted by means of this suction device
Der Erfindung liegt das Problem zugrunde, eine Aufnahmevorrichtung zu schaffen, die geeignet ist, ein Brillenglas mittels eines zentrischen Saugers aufzunehmen und lagegenau, insbesondere genau axial mit Bezug auf die der Aufnahmevorrichtung gegenüberliegende optische Oberfläche des Rohglases, in eine Brillenglashaltewelle einzusetzen, wobei diese Aufnahmevorrichtung so gestaltet sein soll, daß sie sich mit üblichen Brillenglasrandbearbeitungsmaschinen verwenden laßt, deren Brillenglashaltewelle nicht an die Aufnahmevorrichtung angepaßt zu werden brauchtThe invention is based on the problem of creating a receiving device which is suitable for receiving a spectacle lens by means of a central suction device and inserting it precisely into a position in a spectacle lens holding shaft, in particular exactly axially with respect to the optical surface of the raw lens opposite the receiving device, this receiving device thus should be designed so that it can be used with conventional spectacle lens edge processing machines, the spectacle lens holding shaft need not be adapted to the receiving device
Ausgehend von dieser Problemstellung wird die Verwendung einer Aufnahmevorrichtung vorgeschlagen, die aus einem vom Handhabungsgerät gehaltenen Sockel mit einer Vertiefung, einem steuerbaren Unterdruckanschluß an der Vertiefung, einer in der Vertiefung angeordneten, an einer Ringflache der Vertiefung dicht anliegenden Kugelkalotte mit einer Öffnung zur Vertiefung und einen Dichtungsbereich am Rand der Kugelkalotte zur Anlage an eine optische Oberflache des Brillenglases besteht, zum Einsetzen und Entnehmen des Brillenglases in bzw aus einem Behalter und/oder zum Ansetzen und Entnehmen an bzw aus einer Brillenglashaltewelle in einer Brillenglasrandbearbeitungsmaschine mittels eines Handhabungsgeräts, das den Sockel haltBased on this problem, the use of a receiving device is proposed, which consists of a base held by the handling device with a depression, a controllable negative pressure connection on the depression, a spherical cap arranged in the depression, tightly fitting against an annular surface of the depression with an opening for depression and one Sealing area on the edge of the spherical cap for contact with an optical surface of the spectacle lens, for inserting and removing the spectacle lens in or from a container and / or for attaching and removing to or from a spectacle lens holding shaft in a lens processing machine by means of a handling device that holds the base
Wird die Kugelkalotte bei ausgeschalteter Unterdruckbeaufschlagung auf eine optische Oberflache eines Rohglases aufgesetzt, paßt sie sich jeder beliebigen Winkellage dieser optischen Oberflache an, wahrend die gegenüberliegende optische Oberflache ihre Lage beibehalt Wird die Unterdruckbeaufschlagung eingeschaltet, wird das Rohglas im Dichtungsbereich am Rand der Kugelkalotte gehalten, wahrend die Kugelkalotte gegen die Ringflache der Vertiefung im Sockel gezogen wird und aufgrund der Reibung zwischen der Ringflache der Vertiefung und der komplementären Oberflache der Kugelkalotte in dieser Position gehalten wird Wird nunmehr das Rohglas mittels des Handhabungsgeräts zwischen die auseinandergefahrenen Hälften einer Brillenglashaltewelle in einer Brillenglasrandbearbeitungsmaschine gebracht, laßt sich das Rohglas mit seiner freien Oberflache lagegenau und genau koaxial zur Achse dieser Brillenglashaltewelle anbringen und dort in geeigneter Weise befestigen Dies kann in der Weise geschehen, daß das Rohglas mit der freien optischen Oberflache direkt gegen eine unterdruckbeaufschlagbare Spannhulse an dieser Hälfte der Brillenglashaltewelle bewegt wird und durch Unterdruckbeaufschlagung gehalten wird Des weiteren ist es möglich, die der Aufnahmevorrichtung gegenüberliegende optische Oberflache des Rohglases in einer Zentriervorrichtung mit einem üblichen Block oder Sauger zu versehen, der sich lagegenau und koaxial in eine entsprechende Spannhulse an der entsprechenden Hälfte der Brillenglashaltewelle einsetzen laßt Auch in diesem Fall ist eine zusatzliche Unterdruckbeaufschlagung der Spannhulse möglich, um die Haltekraft zu vergrößern Nach dem Ansetzen des Rohglases an die eine Hälfte der Brillenglashaltewelle wird die Unterdruckbeaufschlagung der Kugelkalotte aufgehoben, die Aufnahmevorrichtung aus dem Bereich der Brillenglashaltewelle herausgefahren, die zweite Hälfte der Brillenglashaltewelle wird gegen die nunmehr freie optische Oberflache des Rohglases gepreßt, und die Randbearbeitung kann beginnenIf the spherical cap is placed on an optical surface of a raw glass with the negative pressure application switched off, it adapts to any angular position of this optical surface, while the opposite optical surface maintains its position. If the negative pressure application is switched on, the raw glass is held in the sealing area at the edge of the spherical spherical cap, while the spherical cap is pulled against the annular surface of the recess in the base and is held in this position due to the friction between the annular surface of the recess and the complementary surface of the spherical cap. Now the raw glass is brought between the separated halves of a spectacle lens holding shaft in a spectacle lens edge processing machine by means of the handling device the raw glass with its free Attach the surface precisely and coaxially to the axis of this spectacle lens holding shaft and fasten it there in a suitable manner.This can be done by moving the raw lens with the free optical surface directly against a clamping sleeve on this half of the spectacle lens holding shaft that can be pressurized and holding it by applying negative pressure it is possible to provide the optical surface of the raw glass opposite the receiving device in a centering device with a customary block or suction device that can be inserted in the correct position and coaxially into a corresponding clamping sleeve on the corresponding half of the spectacle lens holding shaft. In this case, too, an additional vacuum is applied Clamping sleeve possible to increase the holding force After attaching the raw lens to one half of the spectacle lens holding shaft, the negative pressure on the spherical cap is released, the receiving device from the The area of the spectacle lens holding shaft is moved out, the second half of the spectacle lens holding shaft is pressed against the now free optical surface of the raw lens, and the edge processing can begin
Die Ringflache der Vertiefung im Sockel kann so ausgebildet sein, daß sich eine linienformige Berührung der Oberflache der Kugelkalotte ergibt Um die Dichtwirkung zu verbessern und die in diesem Bereich durch die Unterdruckbeaufschlagung auftretende Flachenpressung zu verringern, ist es vorteilhaft, die Ringflache der Vertiefung als zur Kugelkalotte komplementäre Kugelflache auszubilden Die Kugelkalotte laßt sich vorteilhafterweise mittels einer pilzformigen, durch die Öffnung geführte Halterung beweglich am Sockel befestigen, so daß sie bei aufgehobener Unterdruckbeaufschlagung nicht verloren gehen kannThe ring surface of the recess in the base can be designed such that there is a linear contact of the surface of the spherical cap. In order to improve the sealing effect and to reduce the surface pressure that occurs due to the negative pressure, it is advantageous to use the annular surface of the recess as a spherical cap to form a complementary spherical surface The spherical cap can advantageously be fastened movably to the base by means of a mushroom-shaped holder which is guided through the opening, so that it cannot be lost when the negative pressure is released
Die Kugelkalotte kann insgesamt aus einem elastischen Kunststoffmaterial hergestellt sein, weist jedoch vorzugsweise im Dichtungsbereich eine weiche Lippendichtung auf, wodurch eine gute Anpassung und Abdichtung an eine nicht sphärische optische Oberflache des Rohglases gewahrleistet ist Die Abmessungen des Sockels mit der darin angeordneten Kugelkalotte sind nur unwesentlich großer als die eines üblichen Blocks oder Saugers, so daß sich die erfindungsgemaße Aufnahmevorrichtung mit einem Rohglas problemlos in den Bereich der auseinandergefahrenen Hälften der Brillenglashaltewelle bewegen laßt Wird der Sockel wenigstens einseitig plattenformig vergrößert bzw verlängert, laßt sich an einem Randbereich ein Haltebolzen zum Befestigen am Handhabungsgerät anordnen Durch diese außermittige Anordnung des Haltebolzens ist gewahrleistet, daß der Bereich der Brillenglashaltewelle von Elementen des Handhabungsgeräts völlig frei bleibtThe spherical cap can be made entirely of an elastic plastic material, but preferably has a soft lip seal in the sealing area, which ensures good adaptation and sealing to a non-spherical optical surface of the raw glass. The dimensions of the base with the spherical cap arranged therein are only insignificantly larger than that of a conventional block or nipple, so that the receiving device according to the invention with a raw glass can be easily moved into the area of the separated halves of the spectacle lens holding shaft This eccentric arrangement of the retaining bolt ensures that the area of the spectacle lens retaining shaft remains completely free of elements of the handling device
Mit der plattenformigen Ausbildung und der Anordnung eines Haltebolzens im Randbereich ist auch eine vorteilhafte Fuhrung des Unterdruckanschlusses verbunden, der sich in Form von Bohrungen von der Vertiefung durch die plattenformige Vergrößerung des Sockels und den Haltebolzen führen laßtWith the plate-shaped design and the arrangement of a retaining bolt in the edge region, an advantageous guidance of the vacuum connection is also connected, which is in the form of bores from the depression through the plate-shaped enlargement of the base and let the retaining bolt guide
Die Erfindung wird nachstehend anhand eines in der Zeichnung gezeigten Ausführungsbeispiels des näheren erläutert In der Zeichnung zeigenThe invention is explained below with reference to an embodiment shown in the drawing
Fig 1 eine schematische Schnittansicht eines Gehauseteils einerFig. 1 is a schematic sectional view of a housing part
Brillenglasrandschleifmaschine mit dem Schleifraum und einer darin angeordneten Brillenglashaltewelle undEyeglass lens edge grinding machine with the grinding space and an eyeglass lens holding shaft arranged therein
Fig 2 eine vergrößerte Schnittdarstellung der AufnahmevorrichtungFig. 2 is an enlarged sectional view of the receiving device
Von einer Brillenglasrandbearbeitungsmaschine ist nur ein Gehausebereich 1 im Schnitt dargestellt, der einen Bearbeitungsraum 2 für ein Rohglas und die Hälften 3, 7 einer Brillenglashaltewelle zeigt Der axial unverschiebbare, drehbare Teil 3 wird als Zentrierwelle bezeichnet und tragt an seinem freien Ende eine Spannhulse 4, die sich über eine Axialbohrung 5 in der Zentrierwelle 3 mit Unterdruck beaufschlagen laßt Zu diesem Zweck ist am Gehäuse 1 im Bereich der Lagerung der Zentrierwelle 3 ein Unterdruckanschluß 6 vorgesehen Koaxial zur Zentrierwelle 3 ist die zweite Hälfte 7 der Brillenglashaltewelle angeordnet, die als Spannwelle bezeichnet wird und axial verschiebbar ist Am freien Ende dieser Spannwelle 7 ist ein Kugeladapter 8 mit einem weichen Stutzspannring angeordnet Mittels eines Handhabungsgeräts 9, an dem eine Aufnahmevorrichtung 10 angeordnet ist, laßt sich ein Rohglas 24 aus einem nicht dargestellten Behalter entnehmen und zwischen den Bereich zwischen der Zentrierwelle 3 und der axial zurückgefahrenen Spannwelle 7 bewegenOf a spectacle lens edge processing machine, only one housing area 1 is shown in section, which shows a machining space 2 for a raw lens and the halves 3, 7 of a spectacle lens holding shaft. The axially immovable, rotatable part 3 is referred to as a centering shaft and carries a clamping sleeve 4 at its free end can be pressurized via an axial bore 5 in the centering shaft 3 For this purpose, a vacuum connection 6 is provided on the housing 1 in the area of the bearing of the centering shaft 3. Coaxial with the centering shaft 3, the second half 7 of the spectacle lens holding shaft is arranged, which is referred to as the clamping shaft and Is axially displaceable At the free end of this clamping shaft 7, a ball adapter 8 is arranged with a soft support ring. By means of a handling device 9, on which a receiving device 10 is arranged, a raw glass 24 can be removed from a container, not shown, and between the area between the centering move shaft 3 and the axially retracted tension shaft 7
Hinsichtlich der Einzelheiten der gesamten Anlage wird auf die bereits erwähnte DE 44 14 784 C2 verwiesenWith regard to the details of the entire system, reference is made to the already mentioned DE 44 14 784 C2
Wesentlich ist, daß die der Spannhulse 4 zugewandte Oberflache des Rohglases 24 mit ihrer Achse beim Ansetzen des Rohglases 24 an die Spannhulse 4 genau koaxial zur Achse der Zentrierwelle 3 liegt, unabhängig davon, welche Winkellage die Oberflache des Rohglases 24, die von der Aufnahmevorrichtung 10 gehalten wird, einnimmtIt is essential that the surface of the raw glass 24 facing the clamping sleeve 4 has its axis exactly coaxial with the axis of the centering shaft 3 when the raw glass 24 is attached to the clamping sleeve 4, irrespective of the angular position of the surface of the raw glass 24 by the receiving device 10 is held, occupies
Im dargestellten Ausführungsbeispiel ist ein Block oder Sauger 25 mittels einer üblichen Zentriervorrichtung an die der Aufnahmevorrichtung 10 gegenüberliegende optische Oberflache des Rohglases 24 angesetzt, und dessen Achse verlauft ebenfalls koaxial zur Achse der Zentrierwelle 3, wenn das Handhabungsgerät 9 das Rohglas an die Spannhulse 4 ansetzt Auch der Block oder Sauger 25 kann in der Spannhulse 4 durch Unterdruck gehalten sein, wenn er gegenüber der Spannhulse 4 in geeigneter Weise abgedichtet ist, da auf diese Weise bereits eine sichere Halterung an der Zentrierwelle 3 gewahrleistet ist, wenn die Aufnahmevorrichtung 10 durch Aufheben der Unterdruckbeaufschlagung gelost wird und bevor der Kugeladapter 8 durch axiales Verfahren der Spannwelle 7 gegen das Rohglas 24 gepreßt wirdIn the exemplary embodiment shown, a block or suction device 25 is attached to the optical surface of the raw glass 24 opposite the receiving device 10 by means of a conventional centering device, and its axis also runs coaxially with the axis of the centering shaft 3 when the handling device 9 also attaches the raw glass to the clamping sleeve 4 the block or suction device 25 can be held in the clamping sleeve 4 by negative pressure if it is sealed in a suitable manner with respect to the clamping sleeve 4, since in this way a secure mounting on the centering shaft 3 is already ensured if the receiving device 10 is released by releasing the negative pressure and before the ball adapter 8 is pressed against the raw glass 24 by axial movement of the tensioning shaft 7
Die Aufnahmevorrichtung 10 ist in Fig 2 in vergrößertem Maßstab gezeigt und besteht aus einem Sockel 11 mit einer Vertiefung 12 Der Sockel 11 weist eine Ringflache 13 auf, die komplementär kugelkalottenformig zu einer äußeren Kugelkalottenflache 19 einer Kugelkalotte 17 geformt istThe holding device 10 is shown in FIG. 2 on an enlarged scale and consists of a base 11 with a depression 12. The base 11 has an annular surface 13 which is shaped in a complementary manner to an outer spherical cap surface 19 of a spherical cap 17
Der Sockel 1 1 weist eine plattenformige Verbreiterung 23 auf, an deren einem Randbereich ein Haltebolzen 15 befestigt ist An diesem Haltebolzen 15 greift das Handhabungsgerät 9 an Von der Vertiefung 12 führt eine radiale Bohrung 14 zu einer axialen Bohrung 16 im Haltebolzen 15 Über diese Bohrungen 14, 16 laßt sich die Vertiefung 12 gesteuert mit Unterdruck beaufschlagen In die Vertiefung 12 ist eine Kugelkalotte 17 eingesetzt, deren Kugelkalottenflache 19 dichtend an der Ringflache 13 anliegt Die Kugelkalotte 17 ist mittels einer pilzformigen Halterung 22, die durch eine Öffnung 18 in der Kugelkalotte 17 geführt ist, am Sockel 11 gehalten Ein Rand 20 der Kugelkalotte 17 ist mit einer ringförmigen, weichen Lippendichtung 21 versehenThe base 11 has a plate-shaped widening 23, on the one edge region of which a holding bolt 15 is fastened. The handling device 9 engages on this holding bolt 15. A radial bore 14 leads to an axial bore 16 in the retaining bolt 15 from the recess 12 , 16, the depression 12 can be pressurized in a controlled manner. A spherical cap 17 is inserted into the recess 12, the spherical cap surface 19 of which rests sealingly on the annular surface 13. The spherical cap 17 is guided by a mushroom-shaped holder 22 which passes through an opening 18 in the spherical cap 17 is held on the base 11. An edge 20 of the spherical cap 17 is provided with an annular, soft lip seal 21
Das mit einem Block oder Sauger 25 in einer üblichen Zentriervorrichtung versehene Rohglas 24 ist beispielsweise waagerecht liegend in einem Behalter angeordnet, aus dem es mittels der Aufnahmevorrichtung 10 entnommen werden soll Dabei ist der Block oder Sauger 25 in eine Halterung im Behalter eingesteckt, die die Lage des Blocks oder Saugers 25 sowie der optischen Oberflache des Rohglases 24, an dem der Block oder Sauger 25 befestigt ist, bestimmtThe raw glass 24 provided with a block or suction device 25 in a conventional centering device is, for example, arranged horizontally in a container from which it is to be removed by means of the receiving device 10. The block or suction device 25 is inserted into a holder in the container, which determines the position of the block or sucker 25 and the optical surface of the raw glass 24 to which the block or sucker 25 is attached
Die dem Block oder Sauger 25 gegenüberliegende optische Oberflache des Rohglases 24, an die die Aufnahmevorrichtung 10 angesetzt werden soll, kann demgegenüber eine andere Winkellage aufweisen, die dadurch bedingt sein kann, daß das Rohglas 24 mit einem prismatischen oder zylindrischen Schliff versehen istThe optical surface of the raw glass 24 opposite the block or sucker 25, to which the receiving device 10 is to be attached, can have a different angular position, which may be due to the fact that the raw glass 24 is provided with a prismatic or cylindrical cut
Wird nun die Aufnahmevorrichtung 10 auf diese Oberflache aufgesetzt, paßt sich die Kugelkalotte 17 der Winkellage dieser optischen Oberflache an, wahrend die diesbezügliche Lage des Blocks oder Saugers 25 bzw der optischen Oberflache, an der dieser Block oder Sauger 25 anliegt, unverändert bleibtIf the receiving device 10 is now placed on this surface, the spherical cap 17 adapts to the angular position of this optical surface, while the relevant position of the block or suction pad 25 or the optical surface against which this block or suction pad 25 rests remains unchanged
Durch Unterdruckbeaufschlagung über die Bohrungen 16, 14 saugt sich die mittels der Lippendichtung 21 abgedichtete Kugelkalotte 17 am Rohglas 24 fest und wird in die Vertiefung 12 hineingezogen, so daß die Reibung zwischen der Ringflache 13 und der Kugelkalottenflache 19 jede Verschiebung verhindertBy applying negative pressure through the bores 16, 14, the spherical cap 17, which is sealed by means of the lip seal 21, is sucked firmly onto the raw glass 24 and is drawn into the depression 12, so that the friction between the annular surface 13 and the Kugelkalottenflache 19 prevents any displacement
Das Rohglas 24 laßt sich nunmehr, wie bereits mit Bezug auf Fig 1 beschrieben, an die Spannhulse 4 der Zentrierwelle 3 ansetzen und wird dort ebenfalls durch Unterdruckbeaufschlagung sicher gehalten Nach Aufhebung der Unterdruckbeaufschlagung der Aufnahmevorrichtung 10 laßt sich diese aus dem Bereich der Zentrierwelle 3 und der axial verschiebbaren Spannwelle 7 herausbewegen, wonach der Kugeladapter 8 mit dem Stutzspannring gegen das Rohglas 24 gefahren wird Der Kugeladapter 8 paßt sich genau wie die Kugelkalotte 17 der Winkellage der optischen Oberflache des Rohglases 24, gegen die dieser Kugeladapter 8 gepreßt wird, an, so daß auch beim Einspannen des Rohglases 24 zwischen der Zentrierwelle 3 und der Spannwelle 7 keine Veränderung der Winkellage der optischen Oberflache des Rohglases 24, die der Spannhulse 24 zugewandt ist, eintrittThe raw glass 24 can now, as already described with reference to FIG. 1, be attached to the clamping sleeve 4 of the centering shaft 3 and is also held there securely by negative pressure. After the negative pressure has been removed from the receiving device 10, it can be removed from the area of the centering shaft 3 and the move axially displaceable clamping shaft 7, after which the ball adapter 8 with the support clamping ring is moved against the raw glass 24. The ball adapter 8, like the spherical cap 17, adapts to the angular position of the optical surface of the raw glass 24 against which this ball adapter 8 is pressed, so that Even when the raw glass 24 is clamped between the centering shaft 3 and the clamping shaft 7, there is no change in the angular position of the optical surface of the raw glass 24 which faces the clamping sleeve 24
Das Rohglas 24 laßt sich auch ohne vorheriges Ansetzen eines Blocks oder Saugers 25 an die Spannhulse 4 ansetzen, wenn diese mit einer Ringdichtung versehen ist, wie sie mit Bezug auf die Kugelkalotte 17 bereits beschrieben ist Auch in diesem Fall ist die Winkellage der an der Spannhulse 4 anliegenden Oberflache des Rohglases 24 eindeutig bestimmt The raw glass 24 can also be attached to the clamping sleeve 4 without prior attachment of a block or suction device 25, if this is provided with an annular seal, as has already been described with reference to the spherical cap 17. In this case too, the angular position is that of the clamping sleeve 4 adjacent surface of the raw glass 24 clearly determined

Claims

Wernicke & Co GmbHWernicke & Co GmbH
P a t e n t a n s p r ü c h eP a t e n t a n s r u c h e
1 Verwendung einer Aufnahmevorrichtung für ein Brillenglas aus einem Sockel (11) mit einer Vertiefung (12), einem steuerbaren Unterdruckanschluß (Bohrungen 14, 16) an der Vertief ng (12), einer in der Vertiefung (12) angeordneten, an einer Ringflache (13) der Vertiefungen (12) dicht anhegenden Kugelkalotte (17) mit einer Öffnung (18) zur Vertiefung (12) und einem Dichtungsbereich (21) am Rand (20) der Kugelkalotte (17) zur Anlage an eine optische Oberflache des Brillenglases zum Einsetzen und Entnehmen des Brillenglases in bzw aus einem Behalter und/oder zum Ansetzen und Entnehmen an bzw aus einer Brillenglashaltewelle (3, 7) in einer Brillenglasrandbearbeitungsmaschine (1) mittels eines Handhabungsgeräts (9), das den Sockel (11) halt1 Use of a receiving device for a spectacle lens from a base (11) with a depression (12), a controllable negative pressure connection (bores 14, 16) on the depression ng (12), one arranged in the depression (12), on an annular surface ( 13) of the recesses (12) tightly adhering spherical cap (17) with an opening (18) for the recess (12) and a sealing area (21) on the edge (20) of the spherical cap (17) for contact with an optical surface of the spectacle lens for insertion and removing the spectacle lens in or from a container and / or for attaching and removing to or from a spectacle lens holding shaft (3, 7) in a spectacle lens edge processing machine (1) by means of a handling device (9) which holds the base (11)
2 Aufnahmevorrichtung zur Verwendung nach Anspruch 1, bei der die Ringflache (13) der Vertiefung (12) als zur Kugelkalotte (17) komplementäre Kugelflache ausgebildet ist2 receiving device for use according to claim 1, wherein the annular surface (13) of the recess (12) as the spherical cap (17) is complementary spherical surface
3 Aufnahmevorrichtung zur Verwendung nach Anspruch 1 oder nach Anspruch 2, bei der die Kugelkalotte (17) mittels einer pilzformigen, durch die Öffnung (18) geführten Halterung (22) beweglich am Sockel (11) befestigt ist3 receiving device for use according to claim 1 or claim 2, wherein the spherical cap (17) by means of a mushroom-shaped, through the opening (18) guided holder (22) is movably attached to the base (11)
4 Aufnahmevorrichtung zur Verwendung nach Anspruch 1 und nach Anspruch 2 oder 3, bei der der Dichtungsbereich (21) als weiche Lippendichtung ausgebildet ist4 receiving device for use according to claim 1 and according to claim 2 or 3, wherein the sealing region (21) is designed as a soft lip seal
5 Aufnahmevorrichtung nach einem der Ansprüche 2 bis 4, bei der der Sockel (11) plattenformig vergrößert ist und an einem Randbereich einen Haltebolzen (15) zum Befestigen am Handhabungsgerät (9) tragt5 receiving device according to one of claims 2 to 4, in which the base (11) is enlarged in the form of a plate and carries a retaining bolt (15) for attachment to the handling device (9) at an edge region
6 Aufnahmevorrichtung nach Anspruch 5, bei der der Unterdruckanschluß (14, 16) von der Vertiefung (12) durch die plattenformige Vergrößerung (23) des Sockels (11) und den Haltebolzen (15) geführt ist 6 receiving device according to claim 5, wherein the vacuum connection (14, 16) of the recess (12) through the plate-shaped enlargement (23) of the base (11) and the retaining bolt (15) is guided
EP00929414A 1999-05-03 2000-04-22 Holding device for a spectacle glass Expired - Lifetime EP1094917B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19920204 1999-05-03
DE19920204A DE19920204C2 (en) 1999-05-03 1999-05-03 Holding device for an eyeglass lens
PCT/EP2000/003669 WO2000066325A1 (en) 1999-05-03 2000-04-22 Holding device for a spectacle glass

Publications (2)

Publication Number Publication Date
EP1094917A1 true EP1094917A1 (en) 2001-05-02
EP1094917B1 EP1094917B1 (en) 2003-01-29

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Application Number Title Priority Date Filing Date
EP00929414A Expired - Lifetime EP1094917B1 (en) 1999-05-03 2000-04-22 Holding device for a spectacle glass

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US (1) US6419570B1 (en)
EP (1) EP1094917B1 (en)
DE (2) DE19920204C2 (en)
WO (1) WO2000066325A1 (en)

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Also Published As

Publication number Publication date
WO2000066325A1 (en) 2000-11-09
DE50001162D1 (en) 2003-03-06
DE19920204C2 (en) 2001-10-31
DE19920204A1 (en) 2000-11-16
EP1094917B1 (en) 2003-01-29
US6419570B1 (en) 2002-07-16

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