EP1796874B1 - Polierwerkzeug mit einer antriebsplatte und einem auswechselbaren pad zur endverarbeitung einer ophthalmischen linse - Google Patents

Polierwerkzeug mit einer antriebsplatte und einem auswechselbaren pad zur endverarbeitung einer ophthalmischen linse Download PDF

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Publication number
EP1796874B1
EP1796874B1 EP05800555A EP05800555A EP1796874B1 EP 1796874 B1 EP1796874 B1 EP 1796874B1 EP 05800555 A EP05800555 A EP 05800555A EP 05800555 A EP05800555 A EP 05800555A EP 1796874 B1 EP1796874 B1 EP 1796874B1
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EP
European Patent Office
Prior art keywords
pad
plate
polishing
polishing tool
drive plate
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.)
Active
Application number
EP05800555A
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English (en)
French (fr)
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EP1796874A1 (de
Inventor
Jean-Francois c/o Essilor International BELLY (Compagnie Générale d'Optique)
Laurent Chabin
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.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
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Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of EP1796874A1 publication Critical patent/EP1796874A1/de
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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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • 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
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the invention relates to the field of polishing ophthalmic lenses.
  • It relates more particularly to a rotary polishing tool for such a lens, this tool being intended to be mounted on the spindle of a polishing machine.
  • the manufacture of an ophthalmic lens requires a polishing operation in which a rotating abrasive disc is held against the surface of the lens and sweeps the surface, the lens being itself driven. in rotation. It is therefore necessary to provide steps in which this abrasive disk is replaced by a new disc or a disc of a different grain.
  • Polishing tools or the like are known to facilitate the replacement of an abrasive disc without having to disassemble the tool from the spindle of the polishing machine.
  • a tool according to the preamble of claim 1 is known from the document EP-A-0 512 373 .
  • the document US 2001/0041650 discloses a polishing head attached to an abrasive disk by means of lateral spring blades fixed on the polishing head and engaging in a groove formed around the periphery of the abrasive disc.
  • the document DE 44 44 496 describes a rotary tool comprising a drive plate which rotates a member through a cross-shaped projection inserted into a recess complementary to the body. The body is held against the drive plate by magnets.
  • WO 01/36157 discloses a cutting tool whose cutting element is caught between two fasteners held together by an elastic ring which is secured to one of the fasteners and which is held against a shoulder provided on the other fastener.
  • the document US 5,931,724 describes in turn a polishing tool comprising a drive plate adapted to drive in rotation an abrasive disk by three projecting pins of the drive plate which fit into three complementary holes of the abrasive disc and through three pivoting members of locking adapted to maintain the abrasive disk against the drive member.
  • WO 01/96067 discloses a polishing tool comprising a drive plate on which is removably mounted an abrasive disc by means of elastic tabs.
  • the object of the invention is to improve this type of polishing tool which comprises a drive plate on which can be mounted removably an abrasive disc.
  • Such a polishing tool makes it possible to decouple the setting in position of the polishing pad and its rotation drive.
  • polishing pad is facilitated by the fact that the intervention of the user is limited to the engagement of the polishing pad in the retaining means.
  • the polishing pad slides freely along the predetermined sliding range and only when the polishing pad is supported on the ophthalmic lens and start of rotation of the spindle that the tooth engages in the notch, at the moment when the tooth and the notch are placed opposite each other at the end of a relative rotation of the drive plate relative to to the polishing pad.
  • the user is exempted from having to orient the pad angularly relative to the plate since the engagement of the tooth in the notch is done automatically.
  • the figure 1 shows the polishing tool 1 ready to be mounted on the rotating spindle of a polishing machine.
  • the type of polishing machine for which the tool 1 is provided is adapted to impart a rotational movement to a tool mounted on its spindle while exerting a pressure force on the tool, during its rotation, against the surface of the lens ophthalmic to polish.
  • This pressure force is generally exerted by a pressure agent such as compressed air.
  • the exploded view of the figure 2 makes it possible to distinguish the constituents of the polishing tool 1.
  • the tool 1 comprises indeed a ball 2 having a threaded bore 3 for mounting on the spindle of the polishing machine.
  • a drive plate 4 is fixed to the ball 2 and a polishing pad 5 is attached to the drive plate 4.
  • a polishing pad 6 is further fixed on the polishing pad 5.
  • the polishing pad has an abrasive surface 7 providing the effective polishing operation by contacting the surface of the lens to be polished.
  • the figure 3 shows in perspective the drive plate 4, viewed from below with respect to its position of the figure 2 .
  • the drive plate 4 is in the form of a cylinder which has a groove 8 on its periphery.
  • the drive plate 4 also has on its visible face on the figure 3 (that is to say on its face opposite to the ball 2) a circular groove 9 extending in the same direction as the cylinder forming the drive plate 4.
  • the inner edges of this groove 9 comprise a flange 10 protruding transversely to the groove 9 at the surface of the drive plate 4.
  • Six teeth 11 of rectangular section are further disposed around the periphery of this surface of the drive plate 4.
  • the circular groove 9 delimits a central abutment 12 flush with the same level as the teeth 11.
  • the figure 4 shows in perspective the polishing pad 5 provided to cooperate with the drive plate 4, the polishing pad 5 being in the position which is hers on the figure 2 .
  • the polishing pad 5 is a rigid disk comprising resiliently deformable and transversely protruding fixing tabs 13 disposed all around the pad 5 so as to materialize a cylinder adapted to engage in the circular groove 9 of the drive plate 4.
  • Each of the fastening lugs 13 has a boss 14 facing inwards.
  • the polishing pad 5 also has notches 15 disposed over the entire circumference of the pad 5, outside the cylinder materialized by the fastening tabs 13. These notches 15 are adapted to the engagement of the teeth 11 of the drive plate 4 and have a depth at least equal to the height of the teeth 11.
  • the surface 16 located inside the cylinder materialized by the fixing lugs 13 is at the same level as the bottom surface of the notches 15.
  • the drive plate 4 is thus fixed on the ball 2 by any known means, the ball 2 receiving a circular seal 17 engaging in the groove 8 of the drive plate 4.
  • the fixing lugs 13 of the polishing pad 5 are engaged in the circular groove 9 of the drive plate 4 so that the plate 4 is immobilized radially relative to the shoe 5 but can slide axially along a sliding range which is limited by the abutment bosses 14 against the flange 10.
  • the polishing tool 1 is used in the following manner.
  • the drive plate 4 and its ball 2 are first mounted on the spindle of the polishing machine. These elements are intended to remain stationary on the spindle of the machine, only the change of the polishing pad 5 is necessary to replace a used polishing pad 6 or to change the polishing characteristics.
  • the polishing pad 5 is then engaged in the drive plate 4 so that the fastening tabs 13 deform so that the bosses can penetrate into the groove 9 by passing through the collar 10 without taking into account the relative position of the teeth 11 and notches 15.
  • the intervention of the user is limited to this commitment.
  • the polishing pad 5, although retained in the groove 9 can not be rotated at this stage.
  • the polishing tool 1 is then placed in position against the surface of the ophthalmic lens to be machined and the rotation of the spindle is activated simultaneously or subsequently.
  • the rotation drive of the pad 5 starts and the polishing operation is continued in a conventional manner.
  • the polishing pad 5 can be used directly, without polishing pad, it then itself comprises an abrasive surface.
  • the teeth 11 and the notches 15 may have a different form from that described here, it is sufficient that their mutual commitment is allowed.
  • the position of the teeth 11 and notches 15 can be further inverted so that the teeth 11 are attached to the pad 5 and the notches 15 are formed on the plate 4. The same applies to the groove 9 and the tabs 13 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (8)

  1. Polierwerkzeug (1) zur Endbearbeitung einer ophthalmischen Linse, umfassend:
    - eine Antriebsplatte (4), die mit Montagemitteln (2) an der Klemme einer Poliermaschine bereitgestellt ist;
    - ein lösbares Polierkissen (5), angepasst um rotationsmäßig von der Antriebsplatte (4) angetrieben zu werden;
    - Positioniermittel (9, 13), die eine radiale Immobilisierung des Kissen (5) im Bezug auf die Platte (4) gewährleisten und ein axiales Gleiten des Kissens (5) mit Bezug auf die Platte (4) ermöglichen;
    - Rückhaltemittel (10, 14), die das axiale Gleiten des Kissens (5) mit Bezug auf die Platte (4) auf einen vorbestimmten Gleitbereich beschränken, dadurch gekennzeichnet, dass sie ferner umfasst:
    - eine Rotationsarretierungseinrichtung, umfassend zumindest einen Zahn (11), ausgelegt zum Eingriff in eine Kerbe von entsprechender Form, wobei der Zahn (11) und die Kerbe (15) angeordnet sind einerseits an der Platte (4) und andererseits dem Kissen (5).
  2. Polierwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Positioniermittel eine Rinne (9) umfassen, in welche eine elastische Fixierlasche (13) eingreift, wobei die Rinne (9) und die Fixierlasche (13) angeordnet sind einerseits an der Platte (4) und andererseits an dem Kissen (5).
  3. Polierwerkzeug nach Anspruch 2, dadurch gekennzeichnet, dass die Rinne (9) kreisförmig ist und dass die Fixierlaschen (13) kreisförmig angeordnet sind, so dass ein Zylinder dargestellt wird, ausgelegt zum Eingreifen in die Rinne (9).
  4. Polierwerkzeug nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass die Rückhaltemittel einen Kragen (10) umfassen, angeordnet in der Rinne (9), sowie einen Hökker (14), angeordnet an der Befestigungslasche (13).
  5. Polierwerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Rotationsarretiereinrichtung mehrere Kerben (15) umfasst, kreisartig angeordnet und gleichmäßig verteilt.
  6. Polierwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Rotationsarretiereinrichtung mehrere Zähne (11) umfasst, kreisartig angeordnet und gleichmäßig verteilt.
  7. Polierwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Rotationsarretiereinrichtung genauso viele Kerben (15) wie Zähne (11) umfasst.
  8. Polierwerkzeug nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass zwischen den Kerben (15) eine Fläche vorgesehen ist, ausgelegt um ein Gleiten der Zähne (11) gegen diese Fläche zu ermöglichen.
EP05800555A 2004-09-10 2005-09-01 Polierwerkzeug mit einer antriebsplatte und einem auswechselbaren pad zur endverarbeitung einer ophthalmischen linse Active EP1796874B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409636A FR2875155B1 (fr) 2004-09-10 2004-09-10 Outil de polissage comportant un plateau d'entrainement et un patin amovible pour la finition d'une lentille ophtalmique
PCT/FR2005/002182 WO2006030091A1 (fr) 2004-09-10 2005-09-01 Outil de polissage comportant un plateau d'entrainement et un patin amovible pour la finition d'une lentille ophtalmique

Publications (2)

Publication Number Publication Date
EP1796874A1 EP1796874A1 (de) 2007-06-20
EP1796874B1 true EP1796874B1 (de) 2008-05-28

Family

ID=34948072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05800555A Active EP1796874B1 (de) 2004-09-10 2005-09-01 Polierwerkzeug mit einer antriebsplatte und einem auswechselbaren pad zur endverarbeitung einer ophthalmischen linse

Country Status (7)

Country Link
US (1) US8029341B2 (de)
EP (1) EP1796874B1 (de)
JP (1) JP4814884B2 (de)
AT (1) ATE396830T1 (de)
DE (1) DE602005007259D1 (de)
FR (1) FR2875155B1 (de)
WO (1) WO2006030091A1 (de)

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DE202009000790U1 (de) * 2009-01-20 2009-03-26 Schneider Gmbh & Co. Kg Polierkopf und Werkzeugwechselarm für einen Polierkopf
DE102011015458A1 (de) * 2011-03-25 2012-09-27 Schneider Gmbh & Co. Kg Poliervorrichtung mit Drehdurchführung
FR2980386B1 (fr) * 2011-09-27 2014-09-12 Visioptimum Internat Dispositif de polissage de lentilles optiques
CN104416437B (zh) * 2013-09-09 2017-12-29 麦启羡 自找平砂纸打磨机
US9969053B2 (en) * 2015-05-13 2018-05-15 GM Global Technology Operations LLC Grinder adaptor assembly
USD770872S1 (en) * 2015-05-13 2016-11-08 Reliance Worldwide Corporation Demount tool
CN109689301A (zh) * 2016-05-31 2019-04-26 弗雷克斯特里姆股份公司 具有刀具元件的刀具
US10076832B2 (en) * 2016-07-27 2018-09-18 Robert Bosch Tool Corporation Accessory system for a power tool
US10800003B2 (en) * 2017-05-09 2020-10-13 Dust Away LLC Dust shroud
JP7018724B2 (ja) * 2017-08-15 2022-02-14 株式会社ディスコ 切削ブレード及び切削ブレードの装着機構
DE102020007766A1 (de) 2020-08-07 2022-02-10 Schneider Gmbh & Co. Kg Werkzeugaufnahme, Bearbeitungswerkzeug, Werkzeugspindel sowie Verfahren zur Bearbeitung optischer Werkstücke

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Also Published As

Publication number Publication date
EP1796874A1 (de) 2007-06-20
US20080096478A1 (en) 2008-04-24
JP4814884B2 (ja) 2011-11-16
ATE396830T1 (de) 2008-06-15
WO2006030091A1 (fr) 2006-03-23
DE602005007259D1 (de) 2008-07-10
JP2008512256A (ja) 2008-04-24
FR2875155B1 (fr) 2006-12-08
FR2875155A1 (fr) 2006-03-17
US8029341B2 (en) 2011-10-04

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