EP0237830B1 - Rectifieuse de bords de verres de lunettes - Google Patents

Rectifieuse de bords de verres de lunettes Download PDF

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Publication number
EP0237830B1
EP0237830B1 EP87102479A EP87102479A EP0237830B1 EP 0237830 B1 EP0237830 B1 EP 0237830B1 EP 87102479 A EP87102479 A EP 87102479A EP 87102479 A EP87102479 A EP 87102479A EP 0237830 B1 EP0237830 B1 EP 0237830B1
Authority
EP
European Patent Office
Prior art keywords
shaft
chamber
spectacle glass
grinding disc
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.)
Expired - Lifetime
Application number
EP87102479A
Other languages
German (de)
English (en)
Other versions
EP0237830A3 (en
EP0237830A2 (fr
Inventor
Lutz Dr.-Ing. Gottschald
Fritz Kötting
Günther Barwasser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wernicke and Co GmbH
Original Assignee
Wernicke and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wernicke and Co GmbH filed Critical Wernicke and Co GmbH
Publication of EP0237830A2 publication Critical patent/EP0237830A2/fr
Publication of EP0237830A3 publication Critical patent/EP0237830A3/de
Application granted granted Critical
Publication of EP0237830B1 publication Critical patent/EP0237830B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • 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 an eyeglass lens grinding machine according to the preamble of the main claim.
  • Such a grinding machine is known from US Pat. No. 3,449,866.
  • spectacle lens blanks are to be pre-ground by processing the circumference of the spectacle lens blank according to a pre-made template.
  • the grinding wheel is fixed on a base.
  • the spectacle lens shaft with a clamped spectacle lens can be moved relative to and parallel to the grinding wheel.
  • the object of the invention is to increase the tightness of the chamber and to reduce the noise with structurally and economically simple means, the movement of the parts not to be influenced or prevented and the machine overall taking up little space should require.
  • the chamber has the approximate width of the grinding wheel plus the size of the axial displacement path of the grinding wheel and the holder for the grinding wheel, for its shaft projecting through a chamber side wall and for the drive motor the device against the spectacle lens and parallel to the spectacle lens shaft is slidably mounted in a horizontal plane below or obliquely below a section of the chamber.
  • the areas and lines to be sealed are reduced to a minimum in the spectacle lens edge grinding machine according to the invention, as a result of which a good seal is created.
  • the small size of the chamber creates only a small resonance box, which causes little noise. This is particularly due to the fact that the shaft of the grinding wheel is slidably guided in two mutually perpendicular planes through a chamber side wall without touching it, so that no noise and vibrations can be transmitted to the chamber by the high-speed shaft with the grinding wheel. In contrast, the noise development of the spectacle lens shaft guided through the chamber side walls is insignificant, since it moves at a very low speed in the order of one or two revolutions rotates per minute.
  • the tightness of the rammer of the eyeglass lens grinding machine according to the invention is such that the interior can be partially or completely filled with grinding fluid and thus the grinding process can be carried out partially or completely in a liquid medium, which in turn reduces the noise level to a minimum.
  • two bearing blocks 4, 5 are arranged on the plate-shaped, square or rectangular machine frame 1 in the vicinity of the two edges 2, 3, the bores of which are coaxial with the edges 2, 3 run and hold a rigid axle or a shaft 6 at the ends of each immovable.
  • the longitudinally displaceable blocks 7 have, on their side facing the longitudinal means M of the frame 1, two parallel guide and support rods 9, 10, which are held at a certain distance from the upper side 1a of the frame 1 on the two blocks 7. -
  • the two parallel leadership - and.
  • Support rods 9, 10 push through in the vicinity of the block 7, the holes 11 each of an upward approach or a rib 12, dia carry on their underside a horizontal and substantially perpendicular to the center line M of the frame 1 supporting carriage 13.
  • the parts 3-13 form a cross slide device in such a way that the support slide 13 is displaceable both in accordance with the directions of the arrows S and N.
  • a slightly angled arm 14 is attached, which extends in a plane perpendicular to the upper side 1a of the frame and parallel to the center line M.
  • a motor 15 is fixedly attached, the shaft 16 of which projects through a corresponding bore in the arm, which is wrapped at its free end by a drive belt 17.
  • the neck or the rib 12 adjacent to the arm 14, a tiger, not shown, is arranged horizontally and parallel to the guide and support rods 9, 10, which carries a shaft 18, the free, the arm 14 adjacent end of which is also wrapped by the drive belt 17 becomes.
  • the motor 15 connected to the arm 14 extends parallel to the edge 19 of the frame 1 over the central portion thereof and drives the flying shaft 18 which is rotatably held in the bearing 14 of the arm 14, not shown.
  • the grinding wheel 20 is rotatably applied over the central region of the frame 1, which can be moved by means of the cross slide device from parts 3-13 in accordance with the directions of arrows N and S and by the motor 15 is driven.
  • the upper wall of the chamber has a hinged window 27 which can be opened using the hinges 28, which can also be attached to the outside of the chamber.
  • a handle 29 can be used for this purpose.
  • the bearings 30, 31 which receive the two half-waves forming the Erillenglaswelle 32, 33 and which are liquid-tight against the two side walls 25, 26 of the chamber 24 are sealed.
  • the spectacle lens B can be clamped between the two half-waves 32, 33 in a known manner, the half-wave 33 being longitudinally adjustable.
  • the Template 34 applied non-rotatably.
  • the grinding wheel shaft 18 is guided through the side wall 26 of the chamber 24 adjacent to the arm 14.
  • a straight longitudinal slot 35 is provided in the side wall 26, the length of the adjusting movement of the shaft 18 according to the arrow S and the height of the shaft movement according to the arrow N below Attention to the sealant 36 described below on the slot 35 is taken into account.
  • the sealing means is preferably a flexible bellows 36, as is known in other fields of technology for sealing parts which can move in two coordinates from the edges of an opening.
  • a frame 1 is again provided, on which the four bearing parts 51 are arranged, two of which each receive the free ends of the axle or shaft 52 on which the blocks 53 are longitudinally displaceable.
  • These blocks 53 carry the parallel horizontal guide and support rods 54, 55 on which the support carriage 56 is guided.
  • an arm 58 is held horizontally on this carriage, at one end of which the motor 59 is attached and the latter other end carries the tiger, not shown, of the shaft 60 of the grinding wheel 66.
  • the motor shaft and the shaft 60 of the grinding wheel are connected to one another by a belt 61 or the like.
  • Chamber 63 which can have the shape of chamber 24 according to FIG. 1, is in turn applied to feet 62 of frame 1.
  • the bearings of the spectacle lens holder shaft 64 are guided through their side walls of the chamber 63.
  • the side wall facing the viewer of FIG. 2 in turn has a longitudinal slot 65, which corresponds to the longitudinal slot 35 according to FIG. 1, which is sealed with the aid of a flexible bellows 67.
  • the embodiment according to FIG. 2 has the advantage of a low overall height and the equal weight on the arm 58 through the grinding wheel 66 and its shaft 60 on the one hand and the motor 59 on the other.
  • the chamber 70 which may have the embodiment of the chambers according to FIGS. 1 and 2, is set at an angle ⁇ of 30-60 ° against the horizontal central plane of the frame 1.
  • a bearing block 71 On a top 1a of the frame 1, a bearing block 71 is provided which carries an axis or shaft 72. This horizontal axis or shaft is surrounded by a bearing 73, the outer bearing ring of which is displaceable in the direction of arrow K on the axis or shaft 72 and rotatable about this axis or shaft in the direction of arrow P.
  • the outer bearing ring carries one Bushing 74, to which an arm 75 and an arm 76 are attached, which are preferably arranged at an angular distance of 30-60 °.
  • the motor 75a is attached to the arm 75, while the free end of the arm 76 carries the bearing for the shaft 77 of the grinding wheel 78.
  • the side wall of the chamber 70 facing the viewer of FIG. 3 has a curved longitudinal slot 79, the curvature of which corresponds to a circular arc section around the axis or shaft 72.
  • the edge of the opening 79 in turn has a flexible bellows 80 over the belt, with which the shaft 77 is sealed against the edge of the opening 80 in such a way that the shaft 77 can perform a movement corresponding to the arrows K and P.
  • the bearings for the two half-shafts of the spectacle lens shaft 81 are in turn guided through the two side walls in a sealed manner.
  • the hood 24, 63, 70 according to FIGS. 1 to 3 forms a self-contained container which has a liquid inlet and a liquid outlet at suitable points.
  • the chamber can be completely or partially filled with liquid; the inflows and outflows are designed accordingly.
  • the partial or total filling of the chamber i.e. it strongly dampens the vibrations to which the chamber is exposed during the grinding process.
  • the chamber 24 is 63, 70 arranged to save space. As a closed container, it projects completely over the cross slide device from parts 3-13 in FIG. 1 and at least partially over the cross slide arrangement from parts 51-56 in FIG. 2. 3, chamber 70 requires a space that is only a portion of its length. The parts supporting the flying shaft 18, 60, 77 of the grinding wheel are arranged completely outside the chamber and independently of it to save space.
  • the chamber 24, 63, 70 has a width which corresponds to the width of the grinding wheel and its longitudinal movement with respect to the spectacle lens.
  • the bellows of the opening through which the grinding wheel shaft passes is designed accordingly and selected in terms of material.
  • the opening that can be closed by the hinged window 27 is such that the grinding wheel 20 can be taken out of the chamber 24, taking into account the two spectacle lens half-waves, after the flying shaft 18 has been pulled out of the chamber to such an extent that its free end releases the grinding wheel.
  • the width of the opening which can be closed by the window 27 and which is perpendicular to the shaft 18 is greater than the diameter of the grinding wheel. This creates a container, most of which are firmly and tightly connected.

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  • 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)

Claims (4)

1. Machine à meuler le bord d'un verre de lunettes comportant un arbre horizontal (32, 33; 64, 81) de maintien du verre de lunettes logé de chaque côté du support (1) de la machine à meuler et une meule (20, 66, 78) entraînée par un moteur, présentant un axe tournant parallèle à l'arbre de maintien du verre de lunettes ainsi qu'une chambre (24, 63, 70) recevant le verre de lunettes (B) et la meule (20, 66, 78) et présentant une fenêtre d'observation (27), dont les parois entourent la meule (20, 66, 78) et le verre de lunettes (B) à une faible distance de ceux-ci, un arbre mobile (18, 60, 77) pénétrant dans la chambre (24, 63, 70) de façon horizontale ou inclinée par rapport aux plans des axes de l'arbre de maintien (32, 33; 64, 81) du verre de lunettes et de la meule (20, 66, 78) et portant à son extrémité libre la meule (20, 66, 78), lequel est monté avec son moteur d'entraînement (15, 59, 75a) sur un support (14, 58; 75, 76) d'un dispositif coulissant (13, 56; 73), caractérisée en ce que la chambre (24, 63, 70) présente à peu près la largeur de la meule (20, 66, 78) plus l'ampleur du déplacement axial de la meule (20, 66, 78) et le support (14, 58; 75, 76) de la meule (20, 66, 78), de son arbre (18, 60, 77) traversant une des parois latérales (26) de la chambre (24, 63, 70) et du moteur d'entraînement (15, 59, 75a) est monté avec le dispositif coulissant (13, 56; 73) sous une partie de la chambre (24, 63, 70) de manière à pouvoir être déplacé dans deux plans perpendiculaires l'un à l'autre par rapport au verre de lunettes (B) et de façon parallèle à l'arbre de maintien (32, 33; 64, 68) du verre de lunettes.
2. Machine à meuler le bord d'un verre de lunettes suivant la revendication 1, caractérisée en ce que la chambre (24, 63, 70) présente une forme ovale ou rectangulaire en coupe transversale longitudinale et est uniquement reliée directement ou indirectement à une moitié du support (1) de la machine à meuler.
3. Machine à meuler le bord d'un verre de lunettes suivant la revendication 1 ou 2, caractérisée en ce que le moteur (15, 59) de la meule (20, 66) et l'arbre (18, 60) de la meule (20, 66) sont montés sur un bras commun (14, 58) installé sur un dispositif (3-13; 51-56) à déplacement en croix.
4. Machine à meuler le bord d'un verre de lunettes suivant la revendication 1 et une des revendications 2 ou 3, caractérisée en ce que l'arbre (77) de la meule (78) et son moteur d'entraînement (75a) sont tous deux montés sur un même bras ou une même fourche (75, 76), lequel ou laquelle peut se déplacer et tourner sur un axe ou un arbre (72) parallèle à l'axe (81) du verre de lunettes.
EP87102479A 1986-03-18 1987-02-21 Rectifieuse de bords de verres de lunettes Expired - Lifetime EP0237830B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3608957 1986-03-18
DE3608957A DE3608957C2 (de) 1986-03-18 1986-03-18 Brillenglasrandschleifmaschine

Publications (3)

Publication Number Publication Date
EP0237830A2 EP0237830A2 (fr) 1987-09-23
EP0237830A3 EP0237830A3 (en) 1988-02-10
EP0237830B1 true EP0237830B1 (fr) 1991-05-02

Family

ID=6296620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102479A Expired - Lifetime EP0237830B1 (fr) 1986-03-18 1987-02-21 Rectifieuse de bords de verres de lunettes

Country Status (5)

Country Link
US (1) US4766699A (fr)
EP (1) EP0237830B1 (fr)
JP (2) JPS62277256A (fr)
DE (2) DE3608957C2 (fr)
ES (1) ES2022822B3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632555B1 (fr) * 1988-06-14 1990-09-28 Briot Int Perfectionnements aux machines a meuler
FR2633542B1 (fr) * 1988-07-04 1991-12-06 Briot Int Meuleuse perfectionnee pour verres ophtalmiques
DE3827122C2 (de) * 1988-08-10 1997-01-16 Wernicke & Co Gmbh Verfahren und Vorrichtung zum Randschleifen eines Brillenglases
JPH0524260U (ja) * 1991-04-04 1993-03-30 株式会社ニコン レンズ研削装置
JP4034842B2 (ja) * 1996-03-26 2008-01-16 株式会社ニデック レンズ研削加工装置
JP4011134B2 (ja) * 1996-03-26 2007-11-21 株式会社ニデック レンズ研削加工装置
EP0925147B1 (fr) * 1996-09-04 2001-02-28 Wernicke & Co. GmbH Polisseuse pour bordure de verre de lunettes
JPH11165250A (ja) * 1997-12-08 1999-06-22 Tokyo Seimitsu Co Ltd ワイヤソー
JP2003300158A (ja) * 2002-04-08 2003-10-21 Hoya Corp レンズ加工装置
FR2843903A1 (fr) * 2002-08-30 2004-03-05 Briot Int Appareil de meulage de lentilles ophtalmiques
US20050238446A1 (en) * 2004-04-27 2005-10-27 Rexon Co., Ltd. Drill press having an inspection structure
CN103481171B (zh) * 2013-09-29 2017-01-18 北京天海工业有限公司 钢质无缝气瓶表面修磨装置
WO2017044472A1 (fr) * 2015-09-09 2017-03-16 Flsmidth A/S Joint d'étanchéité pour appareil de broyage
CN107009219B (zh) * 2017-05-23 2020-01-17 丹阳市雷登智能科技有限公司 镜片加工装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449866A (en) * 1966-10-28 1969-06-17 Colurn Mfg Co Inc Automatic cribbing device
DE6805429U (de) * 1968-11-05 1969-01-30 Wernicke & Co K G Fa Vorrichtung zum schleifen von brillenglasfacetten.
US3798844A (en) * 1972-04-24 1974-03-26 Rigel Mfg Inc Lens grinding apparatus
US4561213A (en) * 1982-04-22 1985-12-31 Coburn Optical Industries, Inc. Apparatus for polishing the edges of lenses
DE3221713A1 (de) * 1982-06-09 1983-12-15 Wernicke & Co GmbH, 4000 Düsseldorf Brillenglasrandschleifmaschine
FR2553323B1 (fr) * 1983-10-18 1986-07-25 Essilor Int Procede et machine pour le biseautage ou rainurage d'une lentille ophtalmique
FR2557000B1 (fr) * 1983-12-23 1987-08-07 Essilor Int Poste de meulage pour machine a meuler, notamment pour le biseautage ou le rainurage d'une lentille ophtalmique
FR2570013B1 (fr) * 1984-09-11 1987-02-13 Essilor Int Machine a meuler pour le biseautage ou rainurage guide ou libre d'une lentille ophtalmique
US4589231A (en) * 1985-01-24 1986-05-20 Flo-Bob Industries Inc. Apparatus and process for dry cutting of plastic optical lenses

Also Published As

Publication number Publication date
US4766699A (en) 1988-08-30
ES2022822B3 (es) 1991-12-16
DE3769679D1 (de) 1991-06-06
DE3608957C2 (de) 1994-02-10
JPH081600U (ja) 1996-11-22
EP0237830A3 (en) 1988-02-10
EP0237830A2 (fr) 1987-09-23
JP2601082Y2 (ja) 1999-11-02
DE3608957A1 (de) 1987-09-24
JPS62277256A (ja) 1987-12-02

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