WO2000068729A1 - Lunettes sans monture, a branches et arcades vissees dans le verre, procede d'obtention de trous oblongs dans des verres de lunettes et dispositif pour la mise en oeuvre de ce procede - Google Patents

Lunettes sans monture, a branches et arcades vissees dans le verre, procede d'obtention de trous oblongs dans des verres de lunettes et dispositif pour la mise en oeuvre de ce procede Download PDF

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Publication number
WO2000068729A1
WO2000068729A1 PCT/EP2000/003670 EP0003670W WO0068729A1 WO 2000068729 A1 WO2000068729 A1 WO 2000068729A1 EP 0003670 W EP0003670 W EP 0003670W WO 0068729 A1 WO0068729 A1 WO 0068729A1
Authority
WO
WIPO (PCT)
Prior art keywords
spectacle lens
lenses
glasses
holes
drilling
Prior art date
Application number
PCT/EP2000/003670
Other languages
German (de)
English (en)
Inventor
Fritz Kötting
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 WO2000068729A1 publication Critical patent/WO2000068729A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C13/00—Assembling; Repairing; Cleaning
    • G02C13/001—Assembling; Repairing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/143—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling lens-drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/221—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by thermic methods
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/02—Bridge or browbar secured to lenses without the use of rims

Definitions

  • the optician marks the holes on a spectacle lens and drills the holes using a suitable drilling device
  • No. 4,502,765 A describes rimless glasses with a bow and nose bridge screwed to the glasses, which have pins which engage in elongated holes to prevent rotation. These pins lie with their entire length on the end edges of the slots, which are essentially perpendicular to the glass surface Area of the elongated holes
  • DE 94 15 834 UI describes a device for holding an eyeglass lens during a milling and / or drilling process and a milling and / or drilling device equipped therewith, which is suitable for attaching eyeglass lenses with bores or elongated holes at least approximately at the optical center provided, the machining direction of which runs at least approximately parallel to the optical axis of the clamped spectacle lens.
  • the direction of the elongated holes runs approximately perpendicular to the direction of a radius running to the optical center of the spectacle lens
  • the invention is based on the problem of simplifying and accelerating the drilling of holes in spectacle lenses, increasing the accuracy and reducing the risk of glass breakage during drilling
  • rimless glasses with bow and nose bridge screwed to the lenses with at least approximately spherically curved front and rear surfaces are proposed, in which the holes for the fastening screws of the bracket and the nose bridge are at least approximately in the direction of the optical center of the lens extending elongated holes are formed, the bore direction of which is at least approximately parallel to the optical axis, the length of the elongated holes being selected such that the fastening screws perpendicular to the surface of the lenses on the front surface of the lenses just one end edge and on the back surface of the lenses that touch the opposite end edge of the slot
  • the invention is based on the consideration that the effort for drilling holes whose axes run at least approximately parallel to the optical axis is relatively low, since the axis of rotation of the drilling tool is at least approximately parallel to the optical one Axis of the spectacle lens can run and no angle adjustment possibility of the drilling device is required if the holes for the fastening screws are designed as elongated holes and the length of the elongated holes is selected such that the fastening screws standing perpendicularly on the surface of the spectacle lenses on the front surface of the spectacle lenses are just the one Touch the end edge and on the back surface of the eyeglass lenses the opposite end edge of the slotted hole. This ensures that the fastening screws are positioned on the eyeglass lenses with sufficient accuracy, and thus the bracket and nose bridge fastened by means of the fastening screws, without forcing the fastening screws, which involves the risk of glass breakage would be.
  • an eyeglass lens processing machine with a computer for controlling the shape grinding of eyeglass lenses, at least one grinding wheel in a grinding chamber, an angle-coded rotatable, radially and axially adjustable and lockable eyeglass holding shaft for clamping an eyeglass lens is at least approximately in the optical center, an angle encoder for recording the angle of rotation ( ⁇ n ) of the spectacle lens holding shaft, a displacement encoder for recording the radial distance (X n ) of the spectacle lens holding shaft from the grinding wheel, a displacement encoder for recording the axial position (Z n ) of the spectacle lens holding shaft with reference to proposed the grinding wheel, an input device for the coordinates and the length of the elongated holes in the computer and a drilling device coupled to the grinding wheel in the X and Z directions, in which the positioning of the B Ear device with respect to the lens held by the lens holding shaft and the production of the elongated holes by the computer depending on the entered coordinates of the holes and their length is controlled
  • the eyeglass lens processing machine used is a conventional, CNC-controlled eyeglass lens processing machine, which is additionally provided with a drilling device, but which does not require any additional control devices or an additional control program, since the drilling device is motion-coupled to the grinding wheel. Possibly. there can be a simple mechanism which folds or telescopes the drilling device into the region of the spectacle lens clamped in the spectacle lens holding shaft or removes it therefrom.
  • the drilling tool must be adapted to the lens material. If it is, for example, silicate glass, a diamond drilling tool is preferably used, while drilling tools made of hard metal are suitable for drilling plastic glasses.In both cases, the drilling tools are designed so that they are used in the manufacture of the elongated holes by parallel movement of the drilling tool cause the material removal - ⁇ g in their cylindrical area
  • Fig. 1 is a schematic sectional view of half of rimless glasses with a screwed on bracket and
  • FIG. 2 shows a cross section of a spectacle lens edge-machining machine wwiitthh eeiinneerr VVoorrrriichtung for producing long punches in Glasses "O l 1 g äsern
  • FIG. 1 shows a spectacle lens 25 with an at least approximately spherically curved front surface and rear surface.
  • the center point of the spherical surfaces is denoted by M, the radius of the front surface of the spectacle lens 25 being denoted by R.
  • the optical axis M-20 runs between the optical center 20 and the center of curvature M of the front surface of the spectacle lens 25 and is perpendicular to the surface in the optical center 20
  • the eyeglass lens 25 has an elongated hole 21 "for attaching a bow egg 14 with a hinge flap 15, while another elongated hole 22" is used to attach a nose bridge.
  • An axis 19 is drawn into the elongated hole 22 ", which runs parallel to the optical axis M-20
  • the elongated hole 22 has a length L, the elongated hole 22", like the elongated hole 21 ", with its length L extending at least approximately radially in the direction of the optical axis M-20.
  • End edges 23, 24 are shown for the elongated hole 22" , which are also present in the slot 21 "accordingly
  • the hinge flap 15 on the front surface of the lens 25 and a washer 17 on the back surface of the lens 25 lie at an angle to the optical axis M-20, corresponding to the curvature of these surfaces.
  • the axis of a fastening screw designed as a cap screw 16 extends at least approximately radially and perpendicularly to the surfaces of the spectacle lens 25. This axis of the cap screw 16 meets the optical axis M-20 im Center of curvature M
  • the hinge flap 15 is attached to the spectacle lens 25 by screwing the cap screw 16 together with a nut 18, the washer 17 being made of plastic, whereby adaptation to different curvatures of the front surface and the back surface of the spectacle lens 25 is achieved
  • the shaft of the cap screw 16 abuts the outer end edge 23 in the region of the front surface of the spectacle lens 25 and the inner end edge 24 of the elongated hole 21 "in the region of the rear surface of the spectacle lens 25, as a result of which the hinge flap 15 and correspondingly also the nose bridge on the spectacle lens 25 is reached without the cap screw 16 being forced into the elongated hole 21 "or 22", so that there is no risk of glass breakage
  • the spectacle lens edge grinding machine shown in FIG. 2 has a housing 1 with a grinding chamber 2, in which at least one grinding wheel 4 with a cylindrical circumference arranged on a shaft 3 and, for example, two facet grinding wheels (not shown) with different facet grooves are arranged parallel to the shaft 3 with the grinding wheel 4 a spectacle lens holding shaft made of two half-shafts 7, 8, of which the half-shaft 7 can be axially displaced by means of a handle, not shown, in order to clamp a raw glass, not shown.
  • the grinding chamber 2 is closed during the grinding process by means of a cover, not shown
  • the shaft 3 with the grinding wheel 4 is set in a rapid rotation while a raw glass held by the spectacle lens holding shaft 7, 8 rotates slowly.
  • the distance between the spectacle lens holding shaft 7, 8 and the shaft 3 with the grinding wheel 4 is controlled by a computer 10 , in which control data for grinding the raw glass in accordance with the shape of a selected spectacle frame are stored
  • An input keyboard (not shown) and a screen (not shown) are also arranged on the housing 1.
  • stored spectacle lens contours can be called up in a known manner and can be directed to the control of the spectacle lens edge grinding machine for processing the spectacle lens
  • the input keyboard to enter personal data of the spectacle wearer, for example the pupil distance, the axial position of a cylindrical or prismatic section of the spectacle lens or the position of a close-up part and the coordinates of the elongated holes 21 ", 22" to be produced
  • the screen serves to display the entered data.
  • the circular raw lens and / or a spectacle lens to be shaped according to the entered data can be displayed on the screen
  • the coordinates for the bores 22 ", 21" can also be entered in another suitable manner, for example using a floppy disk, an EPROM, a bar code or a magnetic strip
  • a guide 45 is arranged for a telescopic arm 27 which carries a high-speed drill drive 26.
  • Air turbines, combined air-water turbines or high-frequency electric motors are suitable as the drill drive
  • the bearing support 38 stands with a slide part
  • a drive motor 40 which acts on the slide part 32 via an electromagnetic clutch 41 is shown and a displacement sensor 43 is used to monitor the displacement control in the X direction.
  • a corresponding displacement sensor 44 is used to monitor the displacement control in the Z direction.
  • the cross slide 31 with the drives and displacement sensors 43, 44 is arranged in a machine base 39, which also carries the housing 1
  • the shaping of the spectacle lens 25 takes place in a computer-controlled manner by means of the computer 10 using a data record which has been entered into the computer and corresponds to the shape of the spectacle lens
  • the bores 21 ", 22" can be made in the spectacle lens 25 by the high-speed drill drive 26 on the telescopic arm 27 from a rest position, not shown, in which it is in a niche in the grinding chamber 2 is moved to the working position shown in Fig. 2
  • the drill drive on the telescopic arm 27 is coupled with the guide 45 to the movement of the cross slide 31. Therefore, the X coordinates of the holes 21 ", 22" are set by moving the slide part 32 in accordance with the coordinates entered.
  • the spectacle lens holding shaft 7, 8 according to the position of the bore 21 "or 22" rotated so that the bore lies on the vertical connecting line of the axes of the grinding wheel shaft 3 and the spectacle lens holding shaft 7, 8, after which the slide part 36 moves in the Z direction and the drill drive 26 is put into operation
  • a drilling tool on the drill drive 26 now drills the holes 21 ′′, 22 ′′ by applying a corresponding feed movement to the slide part 36
  • the setting of the drill drive 26 to the X coordinate 21 ", 22" can be done by control cause the movement of the telescopic arm 27 by means of the computer 10, without this requiring a movement of the cross slide 31.
  • a laser drilling device can also be used. Furthermore, it is possible to use the drilling device 26, 27 as a scanning device for the position of the bores 21, 22 in a shaped disk if this shaped disk in the grinding chamber 2 between the half-shafts 7, 8 clamped and the drilling tool is used as a stylus for insertion into the holes 21, 22 in a shaped disk 17 or if, in the case of a laser drilling device, the laser beam is used to determine the position of the holes
  • a spectacle lens or a support lens can be clamped between the half-shafts 7, 8 in order to scan the corresponding bores
  • the spectacle lens is moved radially with respect to the drilling device 26, 27, either by moving the spectacle lens 25 with the spectacle lens holding shaft 7, 8 or by moving the slide part 32 or by moving the telescopic arm 27 in the guide 45 in the direction of the optical axis M-20 of the spectacle lens 25 over a path which corresponds to the required length L of the elongated hole 22 "or 21" Since the axis of rotation of the drilling tool, not shown, on the drilling device 26, 27 lies parallel to the axis of the spectacle lens holding shaft 7, 8 and the shaft 3, the relative movements of the drilling tool on the drilling device 26, 27 with respect to the spectacle lens 25 can be controlled by means of the computer 10 without that essential interventions in the program for controlling the shape grinding of the spectacle lens 25 must be made

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Eyeglasses (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention concerne un procédé d'obtention de trous oblongs dans des verres de lunettes, ainsi qu'un dispositif pour la mise en oeuvre de ce procédé, caractérisé en ce que la position des trous dans un verre de lunette est transmise, en coordonnées rectangulaires ou polaires, à un ordinateur, et en ce qu'un dispositif de perçage assisté CNC est utilisé pour la commande de la production des trous oblongs.
PCT/EP2000/003670 1999-05-06 2000-04-22 Lunettes sans monture, a branches et arcades vissees dans le verre, procede d'obtention de trous oblongs dans des verres de lunettes et dispositif pour la mise en oeuvre de ce procede WO2000068729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999120925 DE19920925C1 (de) 1999-05-06 1999-05-06 Randlose Brille mit an den Brillengläsern angeschraubten Bügeln und Nasensteg, und Verwendung einer Brillenglasrandbearbeitungsmaschine zum Herstellen von Langlöchern in Brillengläsern
DE19920925.1 1999-05-06

Publications (1)

Publication Number Publication Date
WO2000068729A1 true WO2000068729A1 (fr) 2000-11-16

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PCT/EP2000/003670 WO2000068729A1 (fr) 1999-05-06 2000-04-22 Lunettes sans monture, a branches et arcades vissees dans le verre, procede d'obtention de trous oblongs dans des verres de lunettes et dispositif pour la mise en oeuvre de ce procede

Country Status (2)

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DE (1) DE19920925C1 (fr)
WO (1) WO2000068729A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826599A1 (fr) * 2001-06-29 2003-01-03 Timon Procede de percage de verres optiques, et dispositif de mise en oeuvre dudit procede
ES2217985A1 (es) * 2004-04-20 2004-11-01 Indo Internacional S.A. Taladro de control numerico para el taladrado de una lente de gafas y procedimiento correspondiente.
FR2865046A1 (fr) * 2004-01-08 2005-07-15 Frederic Dupuy Dispositif pour le percage de verres et la finition des vis d'assemblage et son procede associe
CN101030078B (zh) * 2006-02-28 2011-09-07 尼德克株式会社 孔数据输入装置以及具有该装置的眼镜镜片加工装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08155945A (ja) * 1994-12-09 1996-06-18 Topcon Corp リムレスレンズ用穴開け装置とこれを用いた玉摺機とこの玉摺機に使用されるメガネ用形状測定装置
JPH08155806A (ja) * 1994-12-12 1996-06-18 Topcon Corp リムレスレンズの部品取付用の取付穴あけ装置
DE19616572A1 (de) * 1995-08-26 1997-02-27 Wernicke & Co Gmbh Verfahren und Vorrichtung zum Vermessen eines Brillengestells oder eines Brillenglases oder einer Formscheibe
AU7643596A (en) * 1995-12-21 1997-06-26 Occhialeria Sopracolle S.R.L. Template device with positioning pins for drilling holes in spectacle lenses
DE19804428A1 (de) * 1998-02-05 1999-08-19 Wernicke & Co Gmbh Verfahren zum Markieren oder Bohren von Löchern in Brillengläsern und Vorrichtung zur Durchführung des Verfahrens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502765A (en) * 1982-05-13 1985-03-05 Cooper George F Lens support system
DE9415834U1 (de) * 1994-09-30 1996-02-01 Gerth Roland Vorrichtung zur Halterung von Gegenständen aus Glas während eines Fräs- und/oder Bohrvorgangs und damit ausgerüstete Fräs- und/oder Bohreinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08155945A (ja) * 1994-12-09 1996-06-18 Topcon Corp リムレスレンズ用穴開け装置とこれを用いた玉摺機とこの玉摺機に使用されるメガネ用形状測定装置
JPH08155806A (ja) * 1994-12-12 1996-06-18 Topcon Corp リムレスレンズの部品取付用の取付穴あけ装置
DE19616572A1 (de) * 1995-08-26 1997-02-27 Wernicke & Co Gmbh Verfahren und Vorrichtung zum Vermessen eines Brillengestells oder eines Brillenglases oder einer Formscheibe
AU7643596A (en) * 1995-12-21 1997-06-26 Occhialeria Sopracolle S.R.L. Template device with positioning pins for drilling holes in spectacle lenses
DE19804428A1 (de) * 1998-02-05 1999-08-19 Wernicke & Co Gmbh Verfahren zum Markieren oder Bohren von Löchern in Brillengläsern und Vorrichtung zur Durchführung des Verfahrens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10 31 October 1996 (1996-10-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826599A1 (fr) * 2001-06-29 2003-01-03 Timon Procede de percage de verres optiques, et dispositif de mise en oeuvre dudit procede
FR2865046A1 (fr) * 2004-01-08 2005-07-15 Frederic Dupuy Dispositif pour le percage de verres et la finition des vis d'assemblage et son procede associe
WO2005066695A1 (fr) * 2004-01-08 2005-07-21 Dupuy Frederic Dispositifs pour le percage de verres et la finition des vis d’assemblage et procede associe
ES2217985A1 (es) * 2004-04-20 2004-11-01 Indo Internacional S.A. Taladro de control numerico para el taladrado de una lente de gafas y procedimiento correspondiente.
CN101030078B (zh) * 2006-02-28 2011-09-07 尼德克株式会社 孔数据输入装置以及具有该装置的眼镜镜片加工装置

Also Published As

Publication number Publication date
DE19920925C1 (de) 2001-02-08

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