EP3060369B1 - Outil de surfaçage à qualité optique - Google Patents

Outil de surfaçage à qualité optique Download PDF

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Publication number
EP3060369B1
EP3060369B1 EP14789277.2A EP14789277A EP3060369B1 EP 3060369 B1 EP3060369 B1 EP 3060369B1 EP 14789277 A EP14789277 A EP 14789277A EP 3060369 B1 EP3060369 B1 EP 3060369B1
Authority
EP
European Patent Office
Prior art keywords
interface
tool according
peripheral wall
end surface
bell housing
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
EP14789277.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3060369A1 (fr
Inventor
Eric Gacoin
Jonathan SAULNY
Jean Stephane
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
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 Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Priority to EP14789277.2A priority Critical patent/EP3060369B1/fr
Publication of EP3060369A1 publication Critical patent/EP3060369A1/fr
Application granted granted Critical
Publication of EP3060369B1 publication Critical patent/EP3060369B1/fr
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Anticipated expiration legal-status Critical

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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/02—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the invention relates to optical quality surfacing for surfaces such as a face of an ophthalmic lens or a camera lens or an instrument for observing distant objects or a face a semiconductor substrate.
  • Surfacing means any operation to modify the state of a previously shaped surface. These include polishing, grinding or etching operations to modify (decrease or increase) the roughness of the surface and / or to reduce the undulation.
  • a tool for surfacing an optical surface comprising: a rigid support having a transverse end surface; an elastically compressible interface secured to the rigid support and having a first end transverse surface, a second end transverse surface and a lateral surface extending from the pe
  • the tool In order to reduce the roughness of the optical surface, the tool is brought into contact with the latter while maintaining sufficient tool pressure on it so that, by deformation of the interface, the pad conforms to the shape of the optical surface. .
  • the optical surface is rotated, its friction against the tool being sufficient to jointly drive the latter in rotation, a variable shift during operation ensures relative movement and scanning.
  • the surfacing operation requires an abrasive that can be contained in the buffer or in the fluid.
  • the elastically compressible interface compensates for the difference in curvature between the end surface of the tool support and the optical surface.
  • the aim of the invention is to provide a surfacing tool which is particularly efficient in terms of minimizing appearance defects.
  • the connecting structure comprises a bell having a main body and a peripheral wall projecting from the periphery of said body and extending to a free end; and said connecting structure comprises a support member between the peripheral wall of the bell and the periphery of the interface; said peripheral wall of the bell being applied against a portion of the lateral surface and / or the first transverse surface of the interface; at least one annular portion of the lateral surface of the interface being free; said first transverse end surface of the interface being on the side and away from the main body.
  • the interface is elastically compressible and the support between the bell and this elastically compressible interface is effected by the periphery of the elastically compressible interface, it ensures a good conformation of the flexible pad to the surface to be worked whatever it is, to allow surfacing of particularly high quality.
  • the invention also proposes a surfacing machine comprising a surfacing tool of optical quality as mentioned above.
  • the tool 10 illustrated on the Figures 1 to 6 comprises a bell 11, an elastically compressible interface 12, a flexible buffer 13 and an elastic return member 14.
  • the tool 10 is generally cylindrical with symmetry of revolution and has an axis of symmetry illustrated on the Figures 1, 2 , 5 and 6 which defines an axial direction.
  • the bell 11 comprises a main body 16, here a flange, and a peripheral wall 17 projecting from the periphery of the main body 16 to a free end 18.
  • the main body 16 has the general shape of a disc oriented transversely to the axial direction; and the peripheral wall 17 is an annular wall extending in the axial direction.
  • the interface 12 has a first end surface 20, a second end surface 21 and a side surface 22 extending from the periphery of the surface 20 to the periphery of the surface 21.
  • the surfaces 20 and 21 extend transversely to the axial direction of the interface 12 and are here planar.
  • the interface 12 and the buffer 13 have the general shape of a disk of the same diameter, with the thickness of the interface 12 which is higher than the thickness of the buffer 13.
  • the interface 12 has a thickness (distance between the surfaces 20 and 21) of between 1 mm and 20 mm.
  • the buffer 13 is applied against and covers the surface 21 of the interface 12.
  • the subjugation between the pad 13 and the interface 12 is done here by gluing over the entire surface 21.
  • the elastic return member 14 is here a star part. As we see on the figure 3 , the elastic return member 14 comprises an annular portion 24, here arranged centrally, and resiliently flexible strips 25 which extend here radially from the annular portion 24.
  • Each lamella 25 extends between a free end 26 and an end 27 attached to the annular portion 24.
  • the elastic return member 14 is flat.
  • the length of the elastic strips 25 is such that the elastic return member 14 has an outer diameter greater than the outer diameter of the peripheral wall 17 of the bell 11.
  • the peripheral wall 17 has openings 29 in each of which is engaged a distal portion of one of the flexible strips 25.
  • the diameter of the interface 12 and the buffer 13 is slightly larger than the internal diameter of the peripheral wall 17 of the bell 11, as can be seen in FIG. figure 1 .
  • the assembly between the assembly formed by the interface 12 and the buffer 13 is made by interlocking the interface 12 in the space delimited laterally by the peripheral wall 17 between its free end 18 and the elastic return member 14.
  • the thickness of the interface 12 is greater than the distance between the free end 18 and the openings 29 and therefore the elastic return member 14 engaged in these openings.
  • the annular portion of the lateral surface 22 of the interface 12 located between the free end 18 of the peripheral wall 17 and the surface 21 is free.
  • the elastic return member 14 is remote from the main body 16. Consequently, the surface 20 of the interface 12, which is against the elastic return member 14, is remote from the main body 16.
  • the portion of the resilient return member 14 located near the peripheral wall 17 of the bell 11 can not approach the main body 16 since it is engaged in the openings 29.
  • the portion of the elastic return member 14 located near the peripheral wall 17 thus forms a thrust abutment between the peripheral wall 17 and the periphery of the interface 12.
  • a mounting member 30 is connected to the main body 16 on the side opposite the side facing the interface 12, that is to say on the side that one sees up on the Figures 1, 2 , 5 and 6 .
  • the mounting member 30 is here a nipple integrally with the bell 11, arranged centrally.
  • this stud is formed a cavity 31 to accommodate the head 32 of a pin 33 of a surfacing machine ( figure 4 ).
  • the head 32 has a spherical portion end shaped like the cavity 31.
  • the assembly between the mounting member 30 and the pin 33 is made by simple snapping, the material surrounding the cavity 31 being able to deform because the spherical portion of the head 32 is housed in the cavity 31.
  • the tool 10 When the head 32 of the pin 33 is engaged in the cavity 31, the tool 10 cooperates in a ball joint with respect to the pin 33.
  • the mounting member 30 is different from a protruding nipple made of material, for example a mounting member attached to the main body 16 and / or projecting from the main body 16.
  • the ophthalmic lens 36 is mounted on a rotatable support (not shown) to drive it in rotation about the X axis as shown by the arrow 37 .
  • the tool 10 is applied against the face 35 with sufficient force for the pad 13 to conform to its shape.
  • the face 35 is watered with a nonabrasive or abrasive watering fluid, depending on whether or not the pad 13 exerts this function.
  • the tool 10 In order to scan the entire face 35, the tool 10 is moved in a reciprocating motion, as shown by the arrow 38.
  • the force applied by the pin 33 on the tool 10, and more precisely on the mounting member 30, is transmitted to the buffer 13 via the bell 11, via the support member formed by the portion of the elastic return member 14 located near the peripheral wall 17 due to the engagement in the openings 29, and via the interface 12.
  • the support between the bell 11 and the interface 12 is effected by the periphery of the interface 12, it is essentially by its periphery that the flexible buffer 13 presses on the surface to be worked, here the face 35 of the ophthalmic lens 36.
  • the surfacing therefore takes place essentially at the periphery of the buffer 13.
  • the interface 12 is elastically compressible and the support between the bell 11 and this interface 12 is effected by the periphery of the interface 12, it ensures a good conformation of the flexible pad 13 to the surface to work whatever it is, to make a removal of matter distributed in the most homogeneous way and to allow a surfacing of particularly high quality.
  • the tool 10 is particularly suitable for working convex surfaces.
  • the tool 10 is generally capable of working surfaces of different curvatures, including concave surfaces.
  • the variant of the elastic return member 14 illustrated on the figure 7 is shaped in the same way, but with a different number of lamellae 25, here twelve lamellae 25.
  • the variant of the elastic return member 14 illustrated on the figure 8 is shaped in a reverse manner, that is to say with the annular portion 24 which is arranged peripherally.
  • each lamella 25 is therefore central and the attached end 27 is therefore peripheral.
  • the annular portion 24 has an outer diameter similar to the inner diameter of the peripheral wall 17 of the bell 11. Tabs 28 project externally of the annular portion 24 to be engaged in the openings 29.
  • the variant of the elastic return member 14 illustrated on the figure 9 is similar to the variant shown on the figure 8 except that there is a different number of lamellae 25, here twelve instead of six.
  • the slats 25 may have a variable thickness, which therefore has a different flexibility.
  • each lamella may be relatively rigid at its free end and relatively flexible at the attached end.
  • the variant of the elastic return member 14 illustrated on the figure 10 is formed by a disk 40 having a central opening 41.
  • the variant of the return member 14 illustrated on the figure 11 is formed by a solid disk 42.
  • the variant of the elastic return member illustrated on the figure 12 is similar to the variant shown on the figure 11 but the solid disc 42 has a radial notch 43 extending from the periphery to a distance from the center.
  • the variant of the elastic return member illustrated on the figure 13 is similar to the variant shown on the figure 12 , except that there is here a plurality of notches 43 of different lengths, with an alternation of long notches and short notches (each short notch is between two long notches).
  • the disc 40 or 42 has an outer diameter corresponding to the inner diameter of the peripheral wall 17 of the bell 11 and the tongues 28 serve to engage the member 14 with the bell 11 by insertion into the openings 29.
  • the elastic return member 14 is curved, with the convex face turned towards the main body 16 ( figure 14 ) or the concave face facing the main body 16 ( figure 15 ).
  • the embodiment illustrated on the figure 14 is particularly suitable for working on highly convex surfaces.
  • the embodiment illustrated on the figure 15 is particularly suitable for working on concave or even particularly concave surfaces.
  • the elastic return member 14, the elastically compressible interface 12 and the flexible buffer 13 are oriented as the main body 16, that is to say transversely to the axial direction.
  • the elastic return member 14, the elastically compressible interface 12 and the flexible buffer 13 are inclined with respect to the main body 16.
  • this inclination is obtained by arranging the openings 29 not at the same distance from the main body 16 but at different distances.
  • the tool 10 is configured to drive the coolant fluid to the working surface, through openings 45 formed in the main body 16, through an opening 46 formed in the interface 12 and through a opening 47 arranged in the buffer 13.
  • the fluid or gel is contained in a deformable envelope.
  • the fluid is for example a compressed gas or a liquid.
  • the elastically compressible interface 12 itself has sufficient elasticity.
  • the elastically compressible interface 12 is for example made of a homogeneous foam of chosen flexibility or else a foam or other material with a gradient of elasticity (greater elasticity on the side of the main body 16).
  • the portion protruding internally from the peripheral wall 17 to form the support member does not delimit a rib 50 but a shoulder 53.
  • the tool 10 does not have an elastic return member.
  • the assembly formed by the elastically compressible interface 12 and the flexible buffer 13 is not fitted into the bell 11: the peripheral wall 17 of the bell 11 is not applied against a part of the lateral surface 22 of the bell 12 but against a portion of the end surface 20 of the interface 12.
  • the lateral surface 22 of the interface 12 is therefore completely free.
  • the support member between the peripheral wall 17 of the bell 11 and the periphery of the interface 12 is formed by the free end 18 of the peripheral wall 17.
  • the fixing between the bell 11 and the interface 12 is done by a bead of adhesive 55.
  • the variant of the tool 10 illustrated on the figure 21 is similar to the variant shown on the figure 20 , except that the bell 11 is shaped differently: the main body 16 is present only in the center of the bell 11 and the peripheral wall 17 is frustoconical.
  • the variant of the tool 10 illustrated on the figure 22 is similar to the variant shown on the figure 19 , except that the bell is consistent differently: the main body 16 is present only in the center of the bell 11 and the peripheral wall 17 is curved.
  • the shoulder 53 can be made by an adhesive joint.
  • the elastic return member is not a separate member of the bell but is formed in particular by the peripheral wall 17 of the bell 11.
  • the peripheral wall 17 has a return 57 directed towards the inside of the bell 11. If a force directed towards the main body 16 is exerted on the return 57, then the peripheral wall 17 comprising the return 57 flexes elastically toward the main body 16, as shown on the figure 23 by the arrows 58.
  • the support member between the peripheral wall 17 and the interface 12 is formed by the return 57.
  • the attachment between the interface 12 and the bell 11 is effected by an adhesive film 59 placed between the surface 20 of the interface 12 and the return 57.
  • the figure 24 shows a bell 11 in which are provided notches 60 to allow (or to help allow) the bell 11 to play directly the role of the elastic return member.
  • the notches 60 subdivide the main body 16 and / or the side wall 17 of the bell 11 or several angular segments.
  • the variant illustrated on the figure 25 is similar to the variant shown on the figure 23 except that the peripheral wall 17 is formed by an annular wall 62 integral with the main body 16 and an insert 63 secured to the annular wall 62, here by means of tabs 64 each engaged in an opening 65 of the wall 62.
  • the attachment between the interface 12 and the bell 11 is effected otherwise than by nesting or gluing, for example by means of clips, buttons or a bayonet mounting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Surgical Instruments (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP14789277.2A 2013-10-25 2014-10-24 Outil de surfaçage à qualité optique Active EP3060369B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14789277.2A EP3060369B1 (fr) 2013-10-25 2014-10-24 Outil de surfaçage à qualité optique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13306477 2013-10-25
EP14789277.2A EP3060369B1 (fr) 2013-10-25 2014-10-24 Outil de surfaçage à qualité optique
PCT/EP2014/072906 WO2015059299A1 (fr) 2013-10-25 2014-10-24 Outil de surfaçage à qualité optique

Publications (2)

Publication Number Publication Date
EP3060369A1 EP3060369A1 (fr) 2016-08-31
EP3060369B1 true EP3060369B1 (fr) 2019-08-21

Family

ID=49584670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14789277.2A Active EP3060369B1 (fr) 2013-10-25 2014-10-24 Outil de surfaçage à qualité optique

Country Status (5)

Country Link
US (1) US10189139B2 (https=)
EP (1) EP3060369B1 (https=)
CN (1) CN105658376B (https=)
BR (1) BR112016008853B1 (https=)
WO (1) WO2015059299A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL229192B1 (pl) * 2015-11-27 2018-06-29 Rog Stanislaw Przed Pentar Talerzowa ściernica listkowa
CN110253439B (zh) * 2019-07-26 2023-04-18 浙江工业大学 一种具有域内材料均匀去除功能的梯度弹性研抛装置
DE102019213388A1 (de) * 2019-09-04 2021-03-04 Robert Bosch Gmbh Adaptervorrichtung für eine Werkzeugmaschine, Werkzeugmaschine und Werkzeugsystem
EP4563326A1 (en) 2023-11-28 2025-06-04 Essilor International Additive manufacturing system and method for additively manufacturing an object

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US2189472A (en) * 1937-09-27 1940-02-06 Edward G Peterson Buffing device
JP2834662B2 (ja) 1993-12-27 1998-12-09 大同メタル工業株式会社 多層すべり軸受材料及びその製造方法
ATE301022T1 (de) * 1997-05-09 2005-08-15 Meguiar S Inc Verfahren und vorrichtung zum reinigen und endbearbeiten
JP3787457B2 (ja) 1999-05-10 2006-06-21 キヤノン株式会社 研磨工具
JP3673682B2 (ja) * 1999-09-07 2005-07-20 キヤノン株式会社 研磨工具
DE10026936A1 (de) * 2000-05-30 2001-12-06 Hilti Ag Schleifkörper
JP2002172550A (ja) 2000-12-06 2002-06-18 Nikon Corp 研磨装置、研磨方法及びこれら装置又は方法を用いて得られた工作物
EP2065133B1 (en) 2002-01-09 2012-03-21 Hoya Corporation Polishing Apparatus
FR2834662B1 (fr) 2002-01-16 2004-05-14 Essilor Int Outil pour le surfacage d'une surface optique
AU2003221014A1 (en) 2003-03-31 2004-10-25 Fujitsu Limited Machining method and machining device
FR2857610B1 (fr) 2003-07-16 2006-03-17 Essilor Int Outil pour le surfacade d'une surface optique
FR2918911B1 (fr) 2007-07-16 2009-10-16 Essilor Int Outil de surfacage a qualite optique
CN101342672B (zh) * 2008-08-21 2010-06-02 友达光电股份有限公司 研磨装置及其组合方法
FR2935628B1 (fr) 2008-09-10 2011-10-14 Essilor Int Outil de surfacage a qualite optique
FR2935627B1 (fr) 2008-09-10 2010-09-03 Essilor Int Outil de surfacage a qualite optique
DE102008061267A1 (de) 2008-12-10 2010-06-24 Schneider Gmbh & Co. Kg Poliervorrichtung mit Drehdurchführung
DE102009036981A1 (de) * 2009-08-12 2011-02-17 Satisloh Ag Flexibles Polierwerkzeug zur Feinbearbeitung von optisch wirksamen Flächen an insbesondere Brillengläsern
FR2953433B1 (fr) 2009-12-08 2012-02-10 Essilor Int Outil de surfacage a qualite optique
US8585470B2 (en) * 2010-09-22 2013-11-19 Black & Decker Inc. Wearable backing for an abrasive flap disk
CN102794718B (zh) * 2012-07-30 2014-12-17 中国人民解放军国防科学技术大学 柔性被动适应型光顺盘及其柔性夹层和柔性被动适应型光顺盘的操作方法

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Also Published As

Publication number Publication date
WO2015059299A1 (fr) 2015-04-30
BR112016008853B1 (pt) 2022-10-04
CN105658376A (zh) 2016-06-08
US10189139B2 (en) 2019-01-29
CN105658376B (zh) 2020-05-26
EP3060369A1 (fr) 2016-08-31
BR112016008853A8 (pt) 2018-08-14
BR112016008853A2 (https=) 2017-08-01
US20160288287A1 (en) 2016-10-06

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