EP0082322B1 - Gerät für das Zentrieren von Brillengläsern und das Befestigen eines Halteteils auf den Gläsern - Google Patents

Gerät für das Zentrieren von Brillengläsern und das Befestigen eines Halteteils auf den Gläsern Download PDF

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Publication number
EP0082322B1
EP0082322B1 EP82110758A EP82110758A EP0082322B1 EP 0082322 B1 EP0082322 B1 EP 0082322B1 EP 82110758 A EP82110758 A EP 82110758A EP 82110758 A EP82110758 A EP 82110758A EP 0082322 B1 EP0082322 B1 EP 0082322B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
slot
pin
bush
guide column
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
Application number
EP82110758A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0082322A3 (en
EP0082322A2 (de
Inventor
Fritz Kötting
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
Priority claimed from DE19813150967 external-priority patent/DE3150967C2/de
Priority claimed from DE19823218241 external-priority patent/DE3218241C2/de
Application filed by Wernicke and Co GmbH filed Critical Wernicke and Co GmbH
Publication of EP0082322A2 publication Critical patent/EP0082322A2/de
Publication of EP0082322A3 publication Critical patent/EP0082322A3/de
Application granted granted Critical
Publication of EP0082322B1 publication Critical patent/EP0082322B1/de
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/005Blocking means, chucks or the like; Alignment devices
    • B24B13/0055Positioning of lenses; Marking of lenses

Definitions

  • the invention relates to a device of the type mentioned in the preamble of the main claim.
  • a device is known from DE-GM 8 031 865.6.
  • US-A 4 169 318 describes a device for centering spectacle lenses and for fastening a holding part on the glasses, in which the precise guidance of a swivel arm carrying a holding part on a vertical guide column is to be achieved in that one, under the action of a spring standing ball is pressed into a vertical longitudinal groove of the guide column.
  • a small force application at the end of the swivel arm in its direction of rotation or in the opposite direction due to the ratio of the arm length to the cross-sectional radius of the guide rod, the ball escapes from the groove against spring pressure and thus the vertical guidance of the arm is lost .
  • DE-OS 2 705 794 it is known to provide a curved groove on a device for moving flat objects from one position to a turned second position on the circumference of a piston-like part which is longitudinally displaceable in a sleeve and into which a radial pin of the sleeve projects in such a way that when the piston-like part is displaced longitudinally, a rotary movement is imparted to it.
  • the pivotable arm cannot be lowered exactly vertically onto the glass, since the height-adjustable and pivotable sleeve or bush carrying the arm on the guide column with play in the direction of rotation, i.e. is guided in the circumferential direction of the sleeve.
  • Any angular deviation of the arm due to the transmission ratio of the distance between the holding part on the swivel arm and the guide column, on the one hand, to the distance between the guide part of the swivel arm and the guide column, on the other hand, leads to errors in the mounting of the holding part on the glass.
  • the object of the invention starting from the prior art according to DE-U 8 031 865, to eliminate this disadvantage and to be able to lower the holding part exactly vertically on a predetermined straight line onto the spectacle lens using simple means without great expenditure in terms of time and labor. so that the holding part receives a desired precise position on the spectacle lens, with the aid of which the spectacle lens can be inserted into an edge grinding machine and the peripheral and facet grinding can be created there on the periphery of the spectacle lens.
  • the sleeve having the support arm should be lowered without play.
  • a particularly advantageous embodiment of the device is given if, according to claim 10, a motor-rotatably driven outer sleeve with a helically wound slot is used, in which a radially outward pin of the sleeve engages.
  • the exercise of a longitudinal or rotary movement by a motor instead of by hand is generally known in device construction and precision engineering. So it is z. B. from DE-GM 1 998 671 known to cause the feed movement of a sleeve motor.
  • the feature of the motor drive of the outer sleeve can only be seen in conjunction with the other features of the characterizing part of the main claim.
  • the device according to the invention not only offers the advantage of a motor drive for the moving parts of the device, rather the motor movement can be adjusted according to force and speed in such a way that it meets the requirements set out above.
  • the invention is based on the idea of imparting a torque to the holding part and the associated vertically displaceable and rotatable sleeve, by means of which the sleeve receives constant contact with a pin arranged on the guide column during its downward movement.
  • the sleeve When the sleeve is pressed down against the spring pressure, the sleeve receives the aforementioned rotational movement with the aid of a pin and an inclined elongated hole in order to cancel the play of the sleeve.
  • the subject of the invention is in contrast to such devices in which a moment is exerted in the plane in which the spring is arranged, as is shown in US Pat. No. 3,457,652, where a spring is movable on one of the undersides Bar attacks protruding pin, on which the spring tension exerts a moment (see also "Textbooks of precision engineering", Vol. 15, 1950, p. 86).
  • the base frame 1 of the device consists essentially of two parts, the housing part 2 carrying the spectacle lens and the part 3 carrying the guide column to be described later, which are connected to one another.
  • Part 2 of the base frame has in its interior a light source 4, above which a transparent cover 5 is arranged, through which the light of the light source 4 can radiate upwards.
  • Rod-shaped supports 7 provided with rubber caps 6 are preferably provided in a triangular arrangement on the cover 5, so that the inside of the spectacle lens can be placed on the caps 6 and displaced on all sides thereof in order to achieve the desired decentration.
  • the spectacle lens can also be rotated to bring a near part or the cylinder axis into the desired position.
  • Part 3 of the base frame 1 has an intermediate floor 8 with a bore 9 through which the peg-shaped end 10 of the vertical guide column 11 projects.
  • the guide column 11 With the help of the shoulder 12 and a nut 13, the guide column 11 is held non-rotatably in its position.
  • the end 14 of a guide pin 15 is inserted into a bore 16 and held there at approximately its middle height.
  • the upper section of the guide column 11 is surrounded by an intermediate sleeve 17 which is only displaceable in height on the guide column 11.
  • an arm 21 is rotatably arranged, which carries at its end an optical system 22 which allows the spectacle lens on the rod-shaped supports 7 to be observed from above.
  • the intermediate sleeve 17 has a longitudinal slot 23 through which the guide pin 15 of the guide column 11 projects, so that the intermediate sleeve 17 is guided vertically on the guide column 11 but is not rotatable.
  • the longitudinal slot 23 extends, as can be seen from FIGS. 1, 8 and 9, over the lower section of the intermediate sleeve 17th
  • the intermediate sleeve 17 is enclosed by a sleeve 24 which is rotatable and longitudinally displaceable relative to the sleeve 17.
  • this sleeve has in its lower section, as can be seen in FIGS. 4 to 6, a right-angled slot 25 with a vertical section 26 lying in the longitudinal direction of the sleeve 24 and a right-angled section 27 in the circumferential direction of the sleeve.
  • At the free end of the horizontal, circumferential section 27 there is a downwardly directed recess 28.
  • the outer end 29 of the guide pin 15 of the guide column 11 projects into the rectangular slot 25 such that the pin 15 passes through the longitudinal slot 23 of the intermediate bushing 17 and protrudes into the angled slot 25 of the sleeve 24.
  • an elongated hole 30 is attached, which has an inclination ⁇ relative to the horizontal cross-sectional plane of the sleeve 24 (FIG. 4) and which has an upper guide edge 31 for one Pin 32 forms, the inner end of which is held by the sleeve 17 in a bore 33.
  • a cylindrical outer part 34 is non-rotatably and non-displaceably connected, to which the swivel arm 35 is fastened, which at its head part 36 at 37 can hold the holding part which is to be pressed onto the top of the spectacle lens resting on the supports 7.
  • a compression spring 39 is arranged, which tends to push the sleeve 24 upwards.
  • the upper portion of the spring 39 surrounds the lower portion 40 of the intermediate sleeve 17 when it assumes its downwardly extended position relative to the sleeve 24, with the pin 32 in position 32 'in the inclined slot 30 and the guide pin 15 in position 15' in Fig. 4 take.
  • the length a of the section 27 of the rectangular slot 25 measured in the arc measure corresponds to the projected arc length b of the elongated hole 30 and determines the size of the pivoting movement of the arm 35 via the angle a with respect to the fixed arm 21 with the optical system 22.
  • the spring 39 presses the sleeve 24 with the swivel arm 35 attached to it into the upper starting position.
  • the intermediate sleeve 17 is rotated in relation to the column 11 in its uppermost position and the sleeve 24 in relation to it in such a way that the pin 32 has the position 32 "in the elongated hole 30, the pin 15 taking the position 15" in the recess 28 (FIG 4).
  • the swivel arm 35 has its position shown in FIGS. 2 and 3 pivoted out and raised relative to the arm 21. If pressure is now exerted on the button 20 in the direction of the arrow 41 (FIG.
  • the intermediate sleeve 17 is moved downward in the sleeve 24 and the sleeve 24 is rotated in the process, since the pin 32 slides in the slot 30 until the Pins 32 have reached position 32 'and pin 15 has reached position 15'.
  • the arm 35 then stands over the part 2.
  • the pin 15 slides into the slot 23 of the sleeve 17 and in the section 26 of the right-angled slot 25 into position 15 "'. In this case, the head part 36 of the arm 35 pressed onto the lens.
  • the pin 32 is at the start of the lowering of the sleeve 24 and the head part 36 in the position 32 'and the pin 15 in the position 15'.
  • the pin 32 is against the pressed upper guide edge 31 with the result that the sleeve 24 receives a tendency or moment to rotate relative to the sleeve 17 (Fig. 9, arrows P and F).
  • the edge 23a of the slot 23 presses against the pin 15 from one side and, which is crucial for guiding the arm 35, the edge 26a of the section 26 of the rectangular slot 25 against the pin 15 from the other side becomes. But this also gives the sleeve 24 a precisely vertical guide when moving the arm 35 up and down.
  • the arm 35 is fixedly connected to the sleeve 24 via a support ring 42, which is surrounded by parts 43, 44 above and below the ring 42.
  • the intermediate sleeve 17 is only longitudinally displaceable relative to the guide column 11 due to the pin 15, the sleeve 24, on the other hand, is rotatable and longitudinally displaceable with the pin 15 in the sections 26 and 27 of the slot 25 of the guide column 11 and the intermediate sleeve is due to the bottom of the elongated hole 30 and the pin 32 is rotatable and longitudinally displaceable relative to the sleeve 24.
  • the device according to FIGS. 10-17 has the guide column 11, the lower threaded end 51 of which is in turn held non-rotatably in the base frame.
  • the radial guide pin 15 protrudes outwards, which engages in the sleeve 24 having the diameter D.
  • the lower end of the guide column 11 has a radial bearing 52.
  • the formation of parts 24 to 27 and 35 to 37 corresponds to those in Figs. 1 to 9.
  • the lower end of the guide column 11 carries a radially outwardly directed pin 53 on the side opposite the vertical section 26 of the rectangular slot 25.
  • the sleeve 24 is rotatable in an outer sleeve 54 and guided on the inner wall 55 in the longitudinal direction.
  • a ring gear 56 is arranged, in which a drive part of a transmission of a clutch or a motor engages in such a way that the outer sleeve 54 can be rotated by this motor according to speed and force.
  • a helically wound slot 57 which extends through approximately 360 ° in the bush 54 and into which the pin 53 of the sleeve 24 engages.
  • the sleeve 24 is opposite the guide column 11 in a position in which the pin 15 is located at the closed end of the horizontal section 27 of the rectangular slot 25.
  • the pin 53 rests against the upper closed end of the helical slot 57, the sleeve 24 is fully extended and the lower end 58 of the sleeve 24 is, for. B. in the upper region of the guide slot 57.
  • This position of the parts is achieved in that the outer sleeve 54 has been rotated in the direction of arrow P until the two pins 15 and 53 have reached the positions described. In these positions, the pivot arm 35 with the head part 36 is in its highest position and is in the pivoted-out position, i.e. at an angle of 90 ° to the side of the lens support
  • the outer sleeve 54 is rotated with the aid of the ring gear 56 in the opposite direction to the arrow P (in the direction of the arrow L in FIG. 17).
  • the pin 53 remains in its position shown in FIG. 15 at the upper end of the slot 57.
  • the pin 15 slides on the horizontal section 27 of the rectangular slot 25 into the position shown in solid lines in FIG. 16 at the transition of the section 27 in the vertical section 26 of the slot 25.
  • the pivoting movement of the sleeve 24 has ended, which means that the pivot arm 35 with the holding part 36 has reached the level of the spectacle lens.
  • the pin 15 slides, as in the embodiment according to FIGS. 1 to 9, on the edge 26a of the vertical section 26 of the rectangular slot 25, i.e. a torque is exerted on the sleeve 24 in a manner which guarantees a constant contact of the edge 26a with the fixed pin 15 of the guide column 11. This is done in that when the outer sleeve 54 is turned in the direction of arrow L in FIG. 17, the pin 53 of the sleeve 24 is guided on the upper edge 59 of the slot 57.
  • the oblique position of the tangent 60 at the point of contact results in a horizontal component 61 and a vertical component 62 as a result.
  • the horizontal component 61 tries to take the sleeve 24 in the same direction (see arrow K in FIG. 17) and thus the sleeve 24 To give rotational movement in the direction of arrow M in Fig. 16.
  • this brings the edge 26a into constant contact with the fixed pin 15 and thus guarantees the play-free lowering of the sleeve 24 even with a motor drive and adjustable speed and placement force of the holding part.
  • the embodiment according to FIGS. 10 to 17 takes into account that the lens blanks of minus lenses have a strong rim, but a thin middle area, while pulse correction glasses, conversely, have a middle, thicker area and a thin rim section.
  • the stronger the correction lens the more significant the differences between the middle area of the lens blank and its edge section.
  • the lowering of the holding part with an adjustable speed and driving force that is independent of the subjective force of the operator and dependent on the type and strength of the spectacle lenses is therefore of great importance.
  • the device according to FIGS. 10 to 17 not only offers a motor-driven lowering of the holding part 35, but also the possibility of adjusting the motor movement according to force and speed in such a way that it meets the requirements set out above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Eyeglasses (AREA)
EP82110758A 1981-12-23 1982-11-22 Gerät für das Zentrieren von Brillengläsern und das Befestigen eines Halteteils auf den Gläsern Expired EP0082322B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19813150967 DE3150967C2 (de) 1981-12-23 1981-12-23 Gerät zum Zentrieren von Brillengläsern und zum Befestigen eines Halteteils auf den Gläsern
DE3150967 1981-12-23
DE3218241 1982-05-14
DE19823218241 DE3218241C2 (de) 1982-05-14 1982-05-14 Gerät zum Zentrieren von Brillengläsern

Publications (3)

Publication Number Publication Date
EP0082322A2 EP0082322A2 (de) 1983-06-29
EP0082322A3 EP0082322A3 (en) 1984-12-12
EP0082322B1 true EP0082322B1 (de) 1987-06-24

Family

ID=25798217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110758A Expired EP0082322B1 (de) 1981-12-23 1982-11-22 Gerät für das Zentrieren von Brillengläsern und das Befestigen eines Halteteils auf den Gläsern

Country Status (6)

Country Link
US (1) US4543752A (es)
EP (1) EP0082322B1 (es)
BR (1) BR8207419A (es)
CA (1) CA1209164A (es)
DE (1) DE3276625D1 (es)
ES (1) ES517684A0 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8410341D0 (en) * 1984-04-19 1984-05-31 Coopervision Optics Blocking machines
FR2608492B1 (fr) * 1986-12-23 1989-04-21 Essilor Int Dispositif de glantage pour lentille ophtalmique et appareil de centrage comportant un tel dispositif de glantage
FR2652528A1 (fr) * 1989-09-29 1991-04-05 Essilor Int Dispositif de glantage.
FR2652661A1 (fr) * 1989-09-29 1991-04-05 Essilor Int Ensemble de commande pour element mobile, en particulier pour dispositif de glantage.
FR2668410B1 (fr) * 1990-10-25 1993-01-22 Essilor Int Dispositif de glantage a bras de glantage verrouillable.
US5425665A (en) * 1992-12-09 1995-06-20 National Optronics, Inc. Optical lens blocker and method
US5498200A (en) * 1994-08-12 1996-03-12 Wernicke & Co. Gmbh Device for parallex-free centering of a blank for a glass lens for spectacles and for providing markings and/or attaching a holder before inserting the blank into a grinding machine for blanks for glass lenses
DE19505524C2 (de) * 1995-02-18 1996-12-19 Wernicke & Co Gmbh Vorrichtung zum Zentrieren eines Brillenglasrohlings und Anbringen eines Halteteils auf einer optischen Oberfläche des Brillenglasrohlings
JP3966696B2 (ja) * 2001-03-26 2007-08-29 株式会社ニデック カップ取付け装置
RU2005102099A (ru) * 2002-06-28 2005-09-10 Карл Цайс Аг (De) Способ центрирования оптических элементов и устройство для его осуществления
KR100477761B1 (ko) * 2002-12-03 2005-03-21 주식회사 휴비츠 렌즈 블록킹 장치
DE102014015200A1 (de) * 2014-10-16 2016-05-12 Satisloh Ag Vorrichtung zum Blocken von Werkstücken, insbesondere Brillengläsern, für deren Bearbeitung und/oder Beschichtung
US10279751B2 (en) * 2017-07-07 2019-05-07 Scott L. Hintz Adjustable carrier system
CN109834545B (zh) * 2019-03-15 2024-01-02 中山市旌旭光学有限公司 光学镜片自动加工一体机
CN112936095A (zh) * 2020-02-05 2021-06-11 苏丽 一种基于机械加工工件提升避免卡住的提升机构
CN112139909A (zh) * 2020-09-27 2020-12-29 广州图宇科技有限公司 一种光学镜片打磨夹具移动转向机构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE36894C (de) * H. besson und E. N. kent in London, Victoria Park Apparat zum Festhalten von Glasgegenständen beim Schleifen und Poliren
US2293291A (en) * 1940-05-29 1942-08-18 Gaspari & Co Inc J Lens grinding machine
GB666179A (en) * 1949-05-31 1952-02-06 American Optical Corp Improvements in or relating to devices for blocking lenses, discs, and like articles
DE1238802B (de) * 1963-12-18 1967-04-13 Wilhelm Loh K G Optikmaschinen Beschickungseinrichtung an Linsenschleif-, insbesondere Linsenrandschleifmaschinen
US3431688A (en) * 1965-02-04 1969-03-11 Univis Inc Method for processing of ophthalmic lens
FR2079496A5 (es) * 1970-02-03 1971-11-12 Lunetiers Ste
DE2058651A1 (de) * 1970-11-28 1972-06-08 Wernicke & Co Kg Einrichtung zum Zentrieren von Brillenglaesern fuer das Einschleifen
US4057149A (en) * 1976-02-17 1977-11-08 Rogers And Clarke Manufacturing Co. Mechanism for transferring parts
GB1559035A (en) * 1976-10-23 1980-01-09 Proptic Apparatus for the preparation of eye glass lenses prior tothe shaping and/or bevelling thereof
DE2713168C3 (de) * 1977-03-25 1979-09-20 Wernicke & Co Gmbh, 4000 Duesseldorf Einrichtung zum dezentrierten Befestigen eines Halters an einer Brillenglaslinse
DE8031865U1 (de) * 1980-11-29 1981-03-26 Wernicke & Co GmbH, 40231 Düsseldorf Gerät zum Zentrieren von Brillengläsern und zum Befestigen von Halteteilen auf den Gläsern

Also Published As

Publication number Publication date
US4543752A (en) 1985-10-01
EP0082322A3 (en) 1984-12-12
DE3276625D1 (en) 1987-07-30
ES8308087A1 (es) 1983-08-16
CA1209164A (en) 1986-08-05
ES517684A0 (es) 1983-08-16
EP0082322A2 (de) 1983-06-29
BR8207419A (pt) 1983-10-18

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