EP0238877A2 - Dispositif de palpage pour palper le contour des ouvertures de montures de lunettes - Google Patents

Dispositif de palpage pour palper le contour des ouvertures de montures de lunettes Download PDF

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Publication number
EP0238877A2
EP0238877A2 EP87102656A EP87102656A EP0238877A2 EP 0238877 A2 EP0238877 A2 EP 0238877A2 EP 87102656 A EP87102656 A EP 87102656A EP 87102656 A EP87102656 A EP 87102656A EP 0238877 A2 EP0238877 A2 EP 0238877A2
Authority
EP
European Patent Office
Prior art keywords
probe
rod
eyeglass frame
plate
feeler
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
EP87102656A
Other languages
German (de)
English (en)
Other versions
EP0238877A3 (en
EP0238877B1 (fr
Inventor
Lutz Dr.-Ing. Gottschald
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 EP0238877A2 publication Critical patent/EP0238877A2/fr
Publication of EP0238877A3 publication Critical patent/EP0238877A3/de
Application granted granted Critical
Publication of EP0238877B1 publication Critical patent/EP0238877B1/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
    • 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
    • B24B9/144—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 the spectacles being used as a template

Definitions

  • the invention relates to a scanning device for scanning the contour of eyeglass frame openings for the peripheral grinding of eyeglass lenses according to the preamble of the main claim.
  • a grinding machine for the edges of glasses with an electronic data memory which contains the outline shape of the glasses in the form of a data set.
  • a probe rod rotatable about a stationary vertical axis is used with a stylus, the free end of which comes to rest on the inner circumference of the opening of the eyeglass frame.
  • the eyeglass frame itself is mounted on a longitudinally displaceable slide, which is under the action of a spring against a stationary part, so that a digitized radius can be assigned to each angle of rotation of the stylus and these two pairs of values, ie the angle of rotation and the assigned Radius, can be taken from a memory from which the corresponding parts of the lens edge grinding machine can be controlled.
  • a digitized radius can be assigned to each angle of rotation of the stylus and these two pairs of values, ie the angle of rotation and the assigned Radius, can be taken from a memory from which the corresponding parts of the lens edge grinding machine can be controlled.
  • an electromechanical probe for scanning the contour of eyeglass frames is known when shaping eyeglass lenses.
  • a button that can be rotated around its axis is used, which is also axially movable.
  • the electrical signaling device used here consisting of a fixedly arranged transducer and an armature immersed in it, has a mounting of the push button as a ball joint, the axially movable and rotatable shaft of the push button executing a wobble movement, the deflection of which in connection with the rotational position of the shaft gives the values for the reproduction of the spatial curve of the groove of the eyeglass frame opening or of the glass to be ground.
  • the invention has for its object to improve the generic device in such a way that with structurally simple, easy-to-use and manageable means that take up little space, the values determining the spatial curve of a spectacle frame opening are determined in order to be able to store them or to carry out the grinding process immediately .
  • the invention provides the features of the characterizing part of the main claim. -
  • the features of the subclaims serve to improve and further develop the features of the main claim.
  • Rotatable plates supporting the spectacle frame and feeler pins engaging in the groove of the spectacle frame are known per se.
  • the invention has the advantage that the stylus itself does not need to perform a rotary movement and can therefore be designed as a finger, the z. B. is more advantageous in that at different curvatures of the groove of the eyeglass frame, the point of contact with the sensing element does not change or does not change significantly. As is known, this is the case the larger the sensing roller of a sensing element.
  • the invention offers the advantage of determining the values based on simple straight-line movements, so that, for. B. linear potentiometers can be used, which is in contrast to the signal or transducer of DE-AS 26 00 497, in which the transducer has to detect the wobble movement of a disk connected to the probe rod.
  • the device according to the invention has a round frame 1, which is formed from an L-shaped profile piece 2, the horizontal leg 3 of which rests on supports 4 which rest with their feet 5 on a stationary base 6.
  • On the horizontal leg 3 of the profile piece 2 lies the edge 7 of a round plate 8, the edge 9 of which is guided on the vertical leg 10.
  • the plate 8 can be rotated about its vertical central axis M in the direction of the arrow 11.
  • a provided on the support 4a serves for this purpose Motor 12, the drive shaft 13 of which suitably engages in a corresponding part of the plate 8 in order to rotate it in the horizontal plane.
  • the plate 8 has a diameter which is able to carry one half 14a of an eyeglass frame 14.
  • the plate 8 can also have a dimension whereby the entire spectacle frame, ie also the second spectacle frame half 14b, rests on the plate, e.g. B. on the plate half 8a of FIG. 1st
  • the spectacle frame 14, or its half 14a is immovably pressed by clamping and clamping elements 15 onto the surface 8a of the plate 8, which has an elongated or oval hole 16 in the vicinity of its central axis M, which preferably has an elongated or oval shape and its longitudinal axis K is located in the direction of the double arrow 17 (Fig. 1).
  • a slide 18 is adjustable in the direction of the double arrow 17a (FIG. 3) parallel to the longitudinal axis K of the elongated or oval hole in the plate 8.
  • the probe device provided with the general reference number 20 is attached.
  • This has a vertical probe rod 21, which can be moved up and down in the bushing 19 and guided there, and under the action of a Spring 22 stands, one abutment forms the top of the carriage 18 and the other abutment forms the lower end edge of the rod 21.
  • the strength of the spring 22 is chosen so that it compensates for or largely compensates for the weight of the rod 21.
  • the upper end of the push rod 21 protrudes through the hole 16 of the plate 8 and through the opening 23 of the eyeglass frame half 14a. It carries a stylus 24 above the plate 8, the longitudinal axis of which is parallel to the direction of the double arrow 17a which characterizes the movement of the carriage 18, which has an elongated, finger-like configuration and either slightly, as can be seen in the solid line in FIG. 3 is bent under, or, as shown in dash-dotted lines in Fig. 3, has a straight design with a downward end.
  • the free end 25 of the stylus has acute-angled side surfaces and a rounded stylus 26 with which the stylus slides on the groove bottom 27 of the opening 23 of the frame half 14a when the plate 8 is rotated about the axis M by means of the motor 12.
  • the longitudinally displaceable probe rod 21 is non-rotatably connected to the stylus 24 and the longitudinally displaceable probe rod 21 is secured against rotation by means of a key 28 which engages in a groove 28a of the sleeve 19.
  • the probe rod 21 carries an approach, for. B. in the form of an elbow 29, the free end 30 dips as a grinding finger in a potentiometer 31 or as an armature in an electromagnetic coil such that with the adjustment of the probe rod 21 to the parallel leg of the elbow 29 one of the height of the stylus 24th Corresponding measured value is fed via line 32 to a control device 33.
  • a further angle piece 35 is provided, the free arm 36 slides as an armature in an electromagnetic coil or as a grinding finger in a potentiometer 37, whereby a further control pulse via line 38 of the control device 33 is supplied, the horizontal position of the stylus 24 corresponds.
  • the control device 33 therefore receives measured values from the aforementioned displacement sensors 30, 31 and 36, 37, which correspond to the adjustment of the feeler rod 21 in a plane perpendicular to the spectacle frame opening and also in the horizontal direction perpendicular to this plane.
  • the motor 12 of the plate 8 is also connected as an angle encoder via the line 39 to the control device 33, so that the latter not only records and stores the two aforementioned data relating to the movement of the finger-like stylus 24 in the axial and perpendicular direction to the rod 21 rather, the values of the respective angular position of the plate 8 with respect to a zero or starting position.
  • FIG. 5 shows the opening 23 of the spectacle frame half 14a projected on the drawing plane according to FIG. 1.
  • the point 100 of the eyeglass frame opening 23 of the eyeglass frame half 14a is not only a lateral value of the size a determined by the transducer 36, 37, but rather a value is assigned to this value a which was determined by the second transducer 30, 31.
  • This point 100 of the eyeglass frame opening is also z. B. assigned the angle value "zero" in the control device 33.
  • point 101 of the eyeglass frame opening is given a lateral value b, to which a corresponding vertical value of the position of the feeler rod 21 is assigned.
  • the spectacle frame opening 23 has reached the position 23 ⁇ by rotating the frame half 14a.
  • the angular dimension ⁇ by which the plate 8 has been rotated for this purpose becomes the measured value for the two data mentioned above encoder 30, 31 and 36, 37 assigned in the control device 33 so that each point of the eyeglass frame opening or the groove base 27 is determined by three measured values. These measured values can be reproduced on the spectacle lens edge grinding machine immediately or after storage and control the parts of the grinding machine for peripheral grinding without using a template in two axes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Eyeglasses (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
EP87102656A 1986-03-26 1987-02-25 Dispositif de palpage pour palper le contour des ouvertures de montures de lunettes Expired - Lifetime EP0238877B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8608291U 1986-03-26
DE8608291U DE8608291U1 (de) 1986-03-26 1986-03-26 Tasteinrichtung zum Abtasten der Kontur von Brillengestellöffnungen

Publications (3)

Publication Number Publication Date
EP0238877A2 true EP0238877A2 (fr) 1987-09-30
EP0238877A3 EP0238877A3 (en) 1989-07-26
EP0238877B1 EP0238877B1 (fr) 1992-04-29

Family

ID=6793063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102656A Expired - Lifetime EP0238877B1 (fr) 1986-03-26 1987-02-25 Dispositif de palpage pour palper le contour des ouvertures de montures de lunettes

Country Status (4)

Country Link
EP (1) EP0238877B1 (fr)
JP (1) JP2510562B2 (fr)
DE (2) DE8608291U1 (fr)
ES (1) ES2032395T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333412A (en) * 1990-08-09 1994-08-02 Nidek Co., Ltd. Apparatus for and method of obtaining processing information for fitting lenses in eyeglasses frame and eyeglasses grinding machine
EP0666139A1 (fr) * 1994-02-07 1995-08-09 Kabushiki Kaisha TOPCON Méthode et appareil pour la mesure de la forme d'une monture
EP0689900A1 (fr) * 1994-04-20 1996-01-03 Kabushiki Kaisha Topcon Dispositif pour mesurer la contour d'une monture de lunettes
EP0639754A4 (fr) * 1992-07-31 1997-08-06 Topcon Corp Instrument pour la mesure des contours d'une monture de lunette.
WO1999058295A1 (fr) * 1998-05-13 1999-11-18 Wernicke & Co. Gmbh Dispositif pour maintenir une monture de lunettes et pour explorer une rainure en biseau
EP1974854A2 (fr) 2007-03-30 2008-10-01 Buchmann Deutschland GmbH Procédé de balayage du contour d'ouvertures de monture de lunettes et utilisation d'un dispositif de balayage du contour d'ouvertures de monture de lunettes pour le meulage périphérique de verres de lunettes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417533C2 (de) * 1994-05-19 1996-03-21 Wernicke & Co Gmbh Verfahren zum CNC-gesteuerten Formschleifen der Dachfacette eines Brillenglases

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332001C3 (de) * 1972-06-28 1980-07-10 Robert Raymond Maurice Asselin Randschleifmaschine für Brillengläser
US4096684A (en) * 1973-10-11 1978-06-27 Kabushiki Kaisha Hoya Lens Automatic lens grinding machine
FR2297115A1 (fr) * 1975-01-10 1976-08-06 Essilor Int Palpeur pour appareil de lecture de contour, appareil de lecture de contour equipe d'un tel palpeur et applications
JPS5345791A (en) * 1976-10-07 1978-04-24 Koken Kk Lens working machine provided with device for removing interference of grind stone
DE3316619A1 (de) * 1983-05-06 1984-11-08 Otto 4010 Hilden Helbrecht Schleifmaschine fuer die raender von brillenglaesern

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333412A (en) * 1990-08-09 1994-08-02 Nidek Co., Ltd. Apparatus for and method of obtaining processing information for fitting lenses in eyeglasses frame and eyeglasses grinding machine
EP0639754A4 (fr) * 1992-07-31 1997-08-06 Topcon Corp Instrument pour la mesure des contours d'une monture de lunette.
EP0666139A1 (fr) * 1994-02-07 1995-08-09 Kabushiki Kaisha TOPCON Méthode et appareil pour la mesure de la forme d'une monture
EP0689900A1 (fr) * 1994-04-20 1996-01-03 Kabushiki Kaisha Topcon Dispositif pour mesurer la contour d'une monture de lunettes
WO1999058295A1 (fr) * 1998-05-13 1999-11-18 Wernicke & Co. Gmbh Dispositif pour maintenir une monture de lunettes et pour explorer une rainure en biseau
EP1974854A2 (fr) 2007-03-30 2008-10-01 Buchmann Deutschland GmbH Procédé de balayage du contour d'ouvertures de monture de lunettes et utilisation d'un dispositif de balayage du contour d'ouvertures de monture de lunettes pour le meulage périphérique de verres de lunettes
DE102007015808A1 (de) 2007-03-30 2008-10-02 Buchmann Deutschland Gmbh Verfahren zum Abtasten der Kontur von Brillenfassungsöffnungen und Verwendung der Vorrichtung zum Abtasten der Kontur von Brillenfassungsöffnungen für das Umfangsschleifen von Brillengläsern
EP1974854A3 (fr) * 2007-03-30 2008-12-31 Buchmann Deutschland GmbH Procédé de balayage du contour d'ouvertures de monture de lunettes et utilisation d'un dispositif de balayage du contour d'ouvertures de monture de lunettes pour le meulage périphérique de verres de lunettes

Also Published As

Publication number Publication date
JP2510562B2 (ja) 1996-06-26
DE3778575D1 (de) 1992-06-04
EP0238877A3 (en) 1989-07-26
JPS62251056A (ja) 1987-10-31
ES2032395T3 (es) 1993-02-16
DE8608291U1 (de) 1986-05-07
EP0238877B1 (fr) 1992-04-29

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