WO1998043778A1 - Dispositif pour usiner une surface et le bord d'une lentille, et notamment une ebauche de verre de lunette dans un dispositif de serrage - Google Patents

Dispositif pour usiner une surface et le bord d'une lentille, et notamment une ebauche de verre de lunette dans un dispositif de serrage Download PDF

Info

Publication number
WO1998043778A1
WO1998043778A1 PCT/DE1998/000914 DE9800914W WO9843778A1 WO 1998043778 A1 WO1998043778 A1 WO 1998043778A1 DE 9800914 W DE9800914 W DE 9800914W WO 9843778 A1 WO9843778 A1 WO 9843778A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
holding shaft
edge
shaft
processing
Prior art date
Application number
PCT/DE1998/000914
Other languages
German (de)
English (en)
Inventor
Lutz Gottschald
Original Assignee
Wernicke & 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 & Co. Gmbh filed Critical Wernicke & Co. Gmbh
Publication of WO1998043778A1 publication Critical patent/WO1998043778A1/fr

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 a device for processing a surface and the edge of a lens and in particular a lens blank in a (single) clamping.
  • a method and an apparatus for producing egg ⁇ nes edged spectacle lens on the basis of a so-called blank, ie, a not yet edged according to a predetermined disk shape lens, in which only one surface is finished, m a single set is known from WO 93/01024.
  • the content of this public document to which the üb ⁇ all non-engine for explaining in detail terms and procedures described referenced is expressly made this application for the subject of the disclosure.
  • WO 93/01024 specifies as a preferred procedure that the spectacle lens blank is received after the production of the active surface with a receiving adapter and in particular with a block which during the further manufacturing process is on the active surface, ie the surface that has already been finished. remains.
  • the use of recording adapters or blocks as described in DE 40 03 002 AI is considered:
  • disposable adapters consist of a central part and a central surrounding U fangsteii, both of which rest on the surface of the already finished surface, and which are connected to one another in such a way that the peripheral part is independent of the central part is removable from the surface.
  • This makes it possible to first mount the adapter or block on the effective surface of the one-sided and not yet edged, i.e. usually put on tubular glasses. After the so-called prescription surface has been produced, the peripheral part of the block is removed, so that the spectacle lens can be edged in the usual manner and in particular in a conventional edging device, such as a grinding device.
  • the invention has for its object to provide a device for processing a surface and the edge of a lens and in particular a lens blank, i.e. specify a single-sided and not yet rimed lens according to the selected lens frame (lens shape) in one setting, in which the lens or the lens blank is held without a mounting adapter, both when processing the surface (prescription surface) and the peripheral edge according to a predefinable shape becomes.
  • the device has a first holding shaft, which is designed as a hollow shaft and is displaceable in the direction of its longitudinal axis, so that it is in the surface processing on the (first) surface not to be machined in this clamping, that is, in the case of eyeglass lenses, the effective surface, for example a progressive one Flat or a toric surface can be placed. Furthermore, there is a second holding shaft, which only worked on the previously machined edge second surface, the prescription surface is placed on eyeglass lenses, and a third holding shaft is provided, which is arranged in the first holding shaft designed as a hollow shaft and which, together with the second hollow shaft, clamps the lens during the edge processing.
  • a vacuum device such as a vacuum pump in particular, which generates negative pressure in the space enclosed between the third holding shaft and the first holding shaft, through which the lens to be processed is sucked onto the support surface of at least the first holding shaft and is thus held in place during the surface processing.
  • the one-sided lens for example a spectacle lens blank
  • the first holding shaft during the processing of the area not yet processed, for example the prescription area, by the negative pressure, so that the area to be processed (prescription area) is freely accessible .
  • the spectacle lens m is clamped in a manner known per se between the second and third holding shaft, so that the peripheral edge is freely accessible.
  • Fig. 1 shows an inventive device during the surface processing of a lens
  • Fig. 2 shows the device shown in Figure 1 during the edge processing of the clamped lens.
  • the device according to the invention shown in FIGS. 1 and 2 (partially) for machining a surface and the edge of a lens, and in particular a spectacle lens blank, has a first lens holding shaft 1, which is designed as a hollow shaft. Furthermore, a second holding shaft 2 and a third holding shaft 3 are provided. The axes of all the support shafts are aligned, in other words, all the support shafts are arranged on an axis I (coaxial).
  • the holding shafts 1 and 2 are arranged to be displaceable in the direction of the axis I, the holding shaft 3 can, but need not, be designed to be displaceable.
  • FIG. 1 shows the device according to the invention in a position in which an as yet unfinished surface 41 of a lens 4 accommodated in the device according to the invention can be processed.
  • the lens 4 is a pair of glasses without restricting the general applicability of the invention.
  • lenglas blank i.e. a lens that has not yet been rimmed according to a specifiable lens shape and in which only one surface - the effective surface - has been completed.
  • This area is generally the area that is more complicated to produce, for example a progressive or a toric area or an area with several areas of action.
  • the first holding shaft 1 has advanced so far in the direction of the common axis I of all holding shafts that it rests with its contact surface 11 on the surface 42 that has already been completed, i.e. the effective area of the lens 4 rests.
  • the holding shaft 2 is retracted so that the surface 41 of the lens 4 to be processed can be processed.
  • a milling cutter 5 is shown as an example as a tool for surface machining, but of course other types of tools for surface machining, such as turning tools, etc., can also be used.
  • the first holding shaft 1 and the third holding shaft 3 is evacuated by a vacuum pump 6, so that the lens 4 to be machined is applied to the bearing surface 11 of the first holding shaft 1 is sucked in and thus held.
  • the Support surface 11 is elastic.
  • the first holding shaft 1 has advanced so far in the direction of the axis I that the contact surface 31 of the third holding shaft 3 does not rest on the surface 42 of the lens 4.
  • the diameter of the first holding shaft is approximately 40 to 50 mm, so that the spectacle lens (typical diameter 60 to 85 mm) is supported over a large area during surface treatment.
  • the peripheral edge 43 of the spectacle lens 4 can be machined.
  • the second holding shaft 2 is placed on the surface 41 of the spectacle lens 4 and at the same time the holding shaft 1 is withdrawn in such a way that the spectacle lens is clamped between the holding shafts 2 and 3 without the centering of the spectacle lens being “lost”.
  • the first holding shaft is then 1 retracted approximately 50 mm, so that the peripheral edge 43 of the spectacle lens 4 is freely accessible, since the diameter of the third holding shaft 3 (and preferably also the second holding shaft 2) is approximately 20 mm, “extreme” lens shapes can also be edged.
  • the peripheral edge can now be machined by means of a known edge machining tool, which can be exchanged in particular via a tool changing device.
  • Corresponding processing tools are generally known and are known, for example Grinding or polishing discs that can be rotated about axes that are parallel to axis I.
  • the “infeed” between the axis I and the axis on which the grinding or polishing disks are arranged can be varied in accordance with the angle of rotation ⁇ of the spectacle lens 4 about the axis I, so that the spectacle lens 4 corresponds to the The lens shape of the selected frame is rimmed.
  • a universal tool holder which can be arranged in particular on a multi-axis positioning device, such as an industrial robot, and into the edges or surfaces depending on the processing problem -Machining tool can be replaced.
  • a universal tool such as a turning tool for edge and surface processing.
  • the device according to the invention is preferably controlled by an electronic control device, which in particular can have a PC.
  • an electronic control device which in particular can have a PC.
  • Corresponding control devices are known, so that they do not have to be described in detail within the scope of the present description.
  • the lens 4 Since in the device according to the invention the lens 4 is accommodated in a single clamping without a receiving adapter, it is necessary to clamp the spectacle lens or the lens 4 centered.
  • a predetermined point for example the center of the lens 4 has a certain positional relationship relative to the axis I of the holding shafts 1 to 3, but also that the rotational position or the angle of rotation ⁇ with respect to the axis I of the Lens 4 is known, so that it can be taken into account both in the surface processing and in the edge.
  • a device which detects the centering of the lens in the clamping.
  • the lens is centered by the first shaft designed as a hollow shaft.
  • the device can have an optical sensor which, for example via a laser beam, detects a centering mark on the lens through a channel in the axis of the third holding shaft.
  • the centering marking can in particular be a marking which indicates the center of the tubular spectacle lens.

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

L'invention concerne un dispositif pour usiner une surface et le bord d'une lentille, et notamment une ébauche de verre de lunette dans un élément de serrage. Ce dispositif comprend un premier arbre de maintien qui se présente sous la forme d'un arbre creux et peut coulisser en direction de son axe longitudinal de façon à pouvoir être appliqué, lors de l'usinage de surface, sur la (première) surface ne devant pas être usiné dans l'élément de serrage. Ce dispositif comprend également un deuxième arbre de maintien placé, uniquement lors de l'usinage du bord, sur la deuxième surface préalablement usinée; un troisième arbre de maintien qui est monté dans le premier arbre de maintien en forme d'arbre creux et qui serre, avec le deuxième arbre creux, la lentille lors de l'usinage du bord; et une unité qui produit une dépression dans l'espace compris entre le troisième arbre de maintien et le premier arbre de maintien, cette dépression plaquant et maintenant la lentille à usiner sur la surface d'appui au moins du premier arbre de maintien.
PCT/DE1998/000914 1997-03-31 1998-03-31 Dispositif pour usiner une surface et le bord d'une lentille, et notamment une ebauche de verre de lunette dans un dispositif de serrage WO1998043778A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19713222.7 1997-03-31
DE1997113222 DE19713222A1 (de) 1997-03-31 1997-03-31 Vorrichtung zum Bearbeiten einer Fläche und des Randes einer Linse und insbesondere eines Brillenglas-Blanks in einer Aufspannung

Publications (1)

Publication Number Publication Date
WO1998043778A1 true WO1998043778A1 (fr) 1998-10-08

Family

ID=7824998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/000914 WO1998043778A1 (fr) 1997-03-31 1998-03-31 Dispositif pour usiner une surface et le bord d'une lentille, et notamment une ebauche de verre de lunette dans un dispositif de serrage

Country Status (2)

Country Link
DE (1) DE19713222A1 (fr)
WO (1) WO1998043778A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131758A1 (it) * 2013-10-22 2015-04-23 Mei S R L Processo di lavorazione di una lente
CN114764175A (zh) * 2021-01-14 2022-07-19 梅有限责任公司 透镜支撑部件及用于透镜表面加工的系统和方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02198754A (ja) * 1989-01-23 1990-08-07 Olympus Optical Co Ltd 非球面レンズ用心取り装置
DE19527222A1 (de) * 1995-07-26 1997-01-30 Wernicke & Co Gmbh Anlage zum Schleifen wenigstens des Umfangrandes von Brillengläsern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02198754A (ja) * 1989-01-23 1990-08-07 Olympus Optical Co Ltd 非球面レンズ用心取り装置
DE19527222A1 (de) * 1995-07-26 1997-01-30 Wernicke & Co Gmbh Anlage zum Schleifen wenigstens des Umfangrandes von Brillengläsern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 488 (M - 1039) 24 October 1990 (1990-10-24) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131758A1 (it) * 2013-10-22 2015-04-23 Mei S R L Processo di lavorazione di una lente
WO2015059007A1 (fr) * 2013-10-22 2015-04-30 Mei S.R.L. Procédé pour l'usinage d'une lentille
CN105873747A (zh) * 2013-10-22 2016-08-17 美意有限公司 用于加工透镜的工艺
US10926370B2 (en) 2013-10-22 2021-02-23 Mei S.R.L. Process for machining a lens
CN114764175A (zh) * 2021-01-14 2022-07-19 梅有限责任公司 透镜支撑部件及用于透镜表面加工的系统和方法
EP4029648A1 (fr) * 2021-01-14 2022-07-20 MEI S.r.l. Support de lentille sans bloc pour le surfaçage de lentilles

Also Published As

Publication number Publication date
DE19713222A1 (de) 1998-10-01

Similar Documents

Publication Publication Date Title
EP1436119B2 (fr) Dispositif et procede pour l'usinage complet de lentilles optiquement actives sur les deux faces
EP0807491B1 (fr) Support pour lentille optique et procédé pour polir des lentilles
EP1864753B1 (fr) Machine d'usinage de pièces optiques, en particulier de lentilles de lunettes en plastique
EP1916060B1 (fr) Machine destinée au traitement de pièces optiques, en particulier de verres solaires en plastique
DE3927412A1 (de) Linsenschleifvorrichtung und verfahren zum schleifen von linsen
DE102005021639A1 (de) Hochleistungs-Fräs- und Drehmaschine sowie Verfahren zur Bearbeitung von Brillengläsern
DE102013108766B4 (de) Polierverfahren zur Bearbeitung einer optischen Oberfläche einer optischen Linse und hierfür geeignete Polierwerkzeuge
DE3407615C2 (fr)
DE3429408A1 (de) Verfahren und vorrichtung zur oberflaechenbehandlung einer optischen linse
DE4003002A1 (de) Verfahren zur herstellung eines brillenglases und aufnahmeadapter fuer ein brillenglas
EP0273950B1 (fr) Procede et dispositif de fabrication de pieces tournees coupees dans des barres
DE102011002871B4 (de) Spannzange
DE2441976A1 (de) Verfahren und vorrichtung zum herstellen von schmidt-korrekturlinsen
EP0727280B1 (fr) Appareil pour polir des lentilles sphériques
DE10151138B4 (de) Asphärisches Einstärken-Brillenglas und Verfahren zu dessen Bearbeitung
WO1998043778A1 (fr) Dispositif pour usiner une surface et le bord d'une lentille, et notamment une ebauche de verre de lunette dans un dispositif de serrage
DE4214242C2 (fr)
DE29608877U1 (de) Halterung für optische Linsen
EP0592527B1 (fr) Procede de fabrication de verres cercles de lunettes
DE102014112702A1 (de) Vorrichtung und Verfahren zur Fertigung von Linsen aus einer Glasplatte
DE2033858A1 (de) Verfahren und Vorrichtung zum Her stellen von Mehrfach Brennpunkt Linsen
DE10331390A1 (de) Verfahren zur Herstellung von asphärischen optischen Flächen
DE69212109T2 (de) Bearbeitungsmethode von Aussendurchmesser einer keramischen Hülse
DE19749428A1 (de) Bearbeitungsvorrichtung für die 3D-Bearbeitung von optischen Glasrohlingen
DE4221377A1 (de) Verfahren zur herstellung eines gerandeten brillenglases

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase