EP1652619B1 - Outil de polissage à plusieurs zones de pression - Google Patents

Outil de polissage à plusieurs zones de pression Download PDF

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Publication number
EP1652619B1
EP1652619B1 EP05109787A EP05109787A EP1652619B1 EP 1652619 B1 EP1652619 B1 EP 1652619B1 EP 05109787 A EP05109787 A EP 05109787A EP 05109787 A EP05109787 A EP 05109787A EP 1652619 B1 EP1652619 B1 EP 1652619B1
Authority
EP
European Patent Office
Prior art keywords
pressure
membrane
polishing tool
polishing
cushion
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.)
Not-in-force
Application number
EP05109787A
Other languages
German (de)
English (en)
Other versions
EP1652619A3 (fr
EP1652619A2 (fr
Inventor
Gunter Schneider
Helwig Buchenauer
Ulf BÖRNER
Klaus Krämer
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.)
Schneider GmbH and Co KG
Original Assignee
Schneider GmbH and Co KG
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 Schneider GmbH and Co KG filed Critical Schneider GmbH and Co KG
Publication of EP1652619A2 publication Critical patent/EP1652619A2/fr
Publication of EP1652619A3 publication Critical patent/EP1652619A3/fr
Application granted granted Critical
Publication of EP1652619B1 publication Critical patent/EP1652619B1/fr
Not-in-force legal-status Critical Current
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
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • B24B13/012—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools conformable in shape to the optical surface, e.g. by fluid pressure acting on an elastic membrane
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S451/00—Abrading
    • Y10S451/921—Pad for lens shaping tool

Definitions

  • the invention relates to a polishing tool for optical lenses with at least one of the shape of a lens surface of the lenses at least partially adjustable and driven by a drive shaft polishing pad with a membrane, wherein by the polishing pad a contact force of the membrane at least in the direction perpendicular or normal to a Lens surface is transferable, and a connectable to the membrane stiffening element which is dimensionally stable in a direction parallel to a surface of the membrane and in a direction perpendicular or normal to the surface of the membrane flexible and / or pliable.
  • a device from DE 103 19 945 A1 (EP 0 1 473 116 A1, state of the art according to Art. 54 (3) EPC) is already known.
  • This shows a polishing tool for optical lenses with at least one of the shape of a lens surface at least partially adjustable and driven by a drive shaft polishing pad, wherein by the polishing pad a contact force is at least perpendicular to the lens surface transferable.
  • an integrated into the polishing pad reinforcement is provided against which rests the polishing pad.
  • the reinforcement is designed such that it is dimensionally stable in a direction parallel to the lens surface and flexible and / or bendable in a direction perpendicular to the lens surface.
  • WO 03/059572 shows an optical lens polishing tool with a polishing pad adapted to the shape of a lens surface and driven by a drive shaft.
  • a biasing element arranged above the polishing pad is provided, which presses or preloads the polishing pad circumferentially against the polishing pad at points over a plurality of elastic pressure arms.
  • EP 0 971 810 B1 shows a lapping tool for eye correction lenses with a lapping membrane, which is in operative contact with a cylinder arrangement, so that the membrane can be applied against the surface to be processed and is movable relative thereto.
  • the respective cylinder axis in this case has a predetermined end face geometry, so that depending on the relative movement of the promotion of polishing agent is possible.
  • the invention has for its object to form a tool for polishing lenses in such a way and to arrange that a uniform polishing process and a continuous adjustment of the tool is guaranteed.
  • the problem is solved by the features of the main claim. This ensures that the membrane of the polishing pad can be deformed by means of the pressure pad arranged within deviating from a symmetrical or spherical shape and thus optimally adapted to the lens surface.
  • the pressure pads press on their pressure membranes against the polishing pad membrane or the stiffening element contained therein and bulge them partially in the area of the shape and size of the pressure membrane.
  • the pressure membrane is elastic, so that it adapts to the investment conditions, ie the pressure membrane can be any Take surface shape and with respect to the so designed Surface evenly generate compressive force.
  • the various internal pressures or pressure levels ensure the desired, preferably arcuate, bulge of the polishing pad with regard to the desired contact zones between the polishing pad and the lens surface.
  • the pressure membrane is at least 20% smaller than an area of the membrane which can be adapted to the lens surface, relative to an area which can be applied against the membrane or the stiffening element.
  • a relatively small pressure membrane ensures the formation of a zone of curvature within the membrane. Within the zone of curvature, the curvature of the membrane deviates from its basic curvature.
  • the area fraction is at least 50% smaller than that of the membrane. It is also envisaged to use a pressure diaphragm adapted to the desired curvature zone with respect to the shape of its abutment surface.
  • the pressure membrane is round, oval or bone-shaped with respect to the surface which can be applied against the membrane or the stiffening element.
  • the shape of the pressure membrane is designed such that the desired curvature of the polishing pad or the stiffening element results with respect to the adjacent lens surface.
  • the pressure membrane provides the bone-shaped form the possibility to generate by means of a pressure membrane preferably opposite to the center of the polishing pad a corresponding pressure on the membrane of the polishing pad, thus to ensure a conditioning of the polishing pad to the lens surface within these two areas.
  • Other forms of the pressure membrane which ensure a plant of the polishing pad or its membrane to the surface of the lens, in particular those forms which give rise to a desired geometric surface are also provided.
  • the polishing pad is rotationally symmetrical and has an axis of symmetry S, wherein the first pressure pad is arranged concentrically to an axis of symmetry S and the second pressure pad and the third pressure pad are arranged diametrically.
  • the processing of the lens can be made over the entire surface.
  • a zonal machining of the lens surface which provides a superimposed web guide of the polishing tool on the lens surface in addition to the polishing movement, is not necessary.
  • the polishing pad comes over the entire surface against the lens surface to the plant and is pressed on the pressure pad and the stiffening element corresponding to the surface or adapted to this, so that with the onset of polishing, preferably vibration or eccentric movement, each point on the lens surface evenly and equally is processed.
  • five or seven pressure pads are provided, with four or six pressure pads around the concentrically arranged first pressure pads are arranged around.
  • five pressure pads two different radii of curvature of the polishing pad can be generated starting from the centric pressure pads as described above.
  • additional pressure pad according to the geometry ratios, in particular the symmetry ratios starting from the centrally arranged pressure pad corresponding bulge shapes of the polishing pad or the membrane can be ensured.
  • a connecting flange for attaching the membrane and a respective connecting flange for attaching the respective pressure membrane are provided.
  • the cushions formed from the connection flange and membrane or pressure membrane are fastened via the connection flange and supplied with compressed air.
  • the respective membrane or pressure membrane has a preferably wave-shaped side wall, which can be sealingly connected to the respective connection flange.
  • first connection flange for the first pressure pad, the second and third connection flange for the second and third pressure pad and the other connection flanges for the other pressure pads are respectively connected to the same or to different pressure levels.
  • the stiffening element is at least partially enclosed or integrated in the membrane or the stiffening element is arranged within the polishing pad and can be applied from the inside against the membrane.
  • the stiffening element serves the lossless transmission of the polishing movement in the direction parallel to the lens surface and is therefore connected to the membrane.
  • the integration into the membrane itself in the form of a reinforcement thereby represents a very solid and loss-free connection variant between the two parts.
  • the stiffening element but also from the inside against the membrane and preferably in the edge region of the stiffening element with the diaphragm force and / or be positively connected, so that generated by the tool on the membrane on the stiffening element polishing movement is generated parallel to the lens surface as lossless as possible in the center of the polishing pad.
  • the stiffening element is formed from sheet metal, plastic and / or fiber-reinforced plastic.
  • the formation of sheet metal or fiber-reinforced plastic ensures the desired rigidity in the direction parallel to the lens surface with respect to a force introduction point at which the stiffening element is firmly connected directly to the polishing tool or a drive axle.
  • the stiffening element is designed to be flexible in a direction perpendicular or normal to the membrane or to the lens surface and has a thickness of between 0.1 mm and 5 mm, between 0.2 mm and 0.8 mm, in particular 0.3 mm, with a flexible and universal adaptation of the stiffening element is provided on a variety of lens surfaces.
  • the materials used such as sheet metal or fiber-reinforced plastic
  • the very thin design of the stiffening element ensures the desired adaptation to the lens surface, ie essentially in a direction normal to the lens surface.
  • the stiffening element Due to the fact that the stiffening element is applied or formed against the lens surface via the polishing pad during processing, buckling or buckling of the stiffening element is not possible despite very thin wall thicknesses.
  • the desired flexibility of the stiffening element and hence the uniform and universal abutment or molding thereof on lens surface forms of lenses will vary widely optical strength or different radii of curvature guaranteed.
  • the stiffening element is deformable by means of the pressure pad in a toric basic shape.
  • the toric basic shape of the stiffening element serves the coarse or insofar possible adaptation to the respective lens surface to be processed, even without contact with the lens.
  • the adaptation to the respective specific lens and its surface geometry is ensured by the pressure pad (s) in conjunction with the elasticity of the stiffening element.
  • the polishing process is a continuous process that involves a continuous or dynamic adaptation of the pressure pad, the stiffening element and the membrane presupposes the locally changing surface geometry of the relatively moving lens.
  • the adaptation of the curvatures of the diaphragm of the polishing pad generated by the pressure pads is also provided by varying the pressure conditions in the cushion (s) during processing.
  • the polishing pad for receiving in a drive chuck has a retaining flange with a cylindrical bearing surface, which serves for the radial guidance of the membrane.
  • the polishing pad is disposed within this cylindrical retaining flange, so that the polishing movement of the retaining flange is transmitted via the outer wall of the polishing pad on the membrane and thus on the stiffening element.
  • the stiffening element is for this purpose preferably connected in the edge region of the membrane with this, so that the positive connection between the retaining flange or its cylindrical bearing surface and the stiffening element is given over part of the membrane.
  • the bearing surface has an inner diameter d i , which corresponds to an outer diameter d a of the membrane, and a height h H , which corresponds to a height h R of the membrane has.
  • the retaining flange has a plurality of pressure medium connections for a plurality of pressure medium channels, to each of which at least one connection flange can be connected. Since due to the symmetry conditions different pressure pads are subjected to the same pressure, the use of pressure medium channels, the over corresponding connection bores can be connected to the respective connecting flanges, advantageous and grants a correspondingly symmetrical pressure distribution.
  • the pressure medium connections can be connected to at least one drive-side pressure medium control line and the pressure medium control line on the drive side integrated into the drive chuck for the retaining flange and connected to the drive chuck to the support flange.
  • the tool When the tool is received, it can be connected directly to the corresponding pressure medium control lines without further connection activities by picking it up in the drive chuck. Since the drive chuck clamps the retaining flange inevitably, this clamping force is available as a connection force between the drive-side pressure medium control lines and the pressure medium connections.
  • Corresponding coupling pieces could possibly be spring preloaded, so that an over-determination of the retaining bearing of the retaining flange is prevented within the drive chuck.
  • the first pressure pad before and / or during processing of the lens is subjected to a greater or lesser internal pressure than the other pressure pad and that the second pressure pad and the third pressure pad before and / or during processing of the lens with a larger or smaller internal pressure are applied as the other pressure pad.
  • an optimum adaptation of the polishing pad to the surface shape of the lens can be ensured.
  • a control of the different pressure levels of the various pressure pads is possible even during processing. Besides that is due to the relative Press to adjust the membrane to a concave or convex lens surface.
  • a polishing tool 1 shown in FIG. 1 has a holding flange 6 for a tool holder, not shown, of a machine tool (not shown).
  • the retaining flange 6 has a cylindrical guide wall 6.9 in the form of a jacket, wherein a polishing pad 7 is arranged within the holding flange 6 thus formed.
  • the polishing pad 7 consists of a membrane 7.1, which is connected via a connecting flange 7.2 with the retaining flange 6.
  • the membrane 7.1 is dome-shaped and has a folded, cylindrical edge region 7.3, which forms the connection to the connection flange 7.2.
  • the pressure pad 16.1 has a pressure diaphragm 16.1 ', which is connected via a connecting flange 6.1 with the connecting flange 7.2.
  • the connection flange 7.2 has two annular channels 6.11, 6.11 ', each of which forms a flow connection, not shown, to the individual pressure pads 16.4, 16.6.
  • the annular channels 6.11, 6.11 ' can be supplied with pressure medium via further pressure medium channels 6.10 according to FIG.
  • a likewise dome-shaped stiffening element 2 is arranged between the individual pressure pads 16.1, 16.4, 16.6 and the membrane 7.1 .
  • the stiffening element 2 is in the edge region 7.3, that is arranged circumferentially in a designated retaining 7.4 of the membrane 7.1.
  • the polishing movement of the polishing tool 1, which is transmitted to the retaining flange 6 via the tool holder, not shown, is transmitted via the guide wall 6.9 to the edge region 7.3 of the membrane 7.1 and from there to the Stiffening element 2.
  • the stiffening element 2 via the various pressure pad 16.1, 16.4, 16.6 is positively connected to the diaphragm 7.1.
  • an intermediate element 7.6 is provided, which transfers the polishing movement from the cylindrical guide wall 6.9 to the diaphragm 7.1 or its edge region 7.3.
  • the sectional view according to FIG. 2 shows a similar exemplary embodiment as FIG. 1.
  • the right and left pressure pads 16.4, 16.6 are arranged symmetrically with respect to an axis of symmetry S, the central pressure pad 16.1 being placed coaxially with the axis of symmetry S.
  • the connecting flange 6.1 for the middle pressure pad 16.1 has a pressure medium channel 6.1 ', which continues the pressure medium conducted via the retaining flange 6 to the middle or first pressure pad 16.1.
  • the remaining connection flanges 6.2 to 6.7 have corresponding pressure medium channels 6.2 'to 6.7'.
  • the edge region 7.3 of the diaphragm 7.1 rests directly against the cylindrical shell or the cylindrical guide wall 6.9.
  • FIG. 3 shows a further perspective sectional illustration in a plane perpendicular to the sectional plane according to FIG. 1.
  • a second pressure pad 16.2 and a third pressure pad 16.3 are shown in section.
  • the three pressure pads 16.1 to 16.3 are consecutively placed diametrically to the diaphragm 7.1.
  • the connecting flange 6.1 has a pressure medium connection 6.14 ', in the pressure medium channel 6.10 'leads, wherein the pressure medium channel is 6.10' via corresponding connection channels 6.16 to 6.16 '' of the connecting flange 7.2 with the respective connection flange 6.1 to 6.3 for the first, second and third pressure pad 16.1 to 16.3 in flow connection.
  • the annular channels 6.11 and 6.11 ' are supplied with pressure medium for the other pressure cushions.
  • the cylindrical shell or the cylindrical guide wall 6.9 has circumferentially a plurality of offset in the circumferential direction arranged outlet openings 6.9 'for polishing agent.
  • Figure 4 shows a similar embodiment as Figure 3 in section.
  • the further pressure medium channel 6.10 is shown with its pressure medium connection 6.14, which supplies the annular channel 6.11' and via the annular channel 6.11 'the second pressure pad 16.2 and the third pressure pad 16.3 with pressure medium.
  • Figure 5 shows a view from above.
  • seven pressure pad 16.1 to 16.7 are arranged.
  • the first pressure pad 16.1 is placed coaxially with the cylindrical guide wall 6.9 and the membrane 7.1 arranged therein, whereas the second pressure pad 16.2 and the third pressure pad 16.3 are arranged diametrically therewith.
  • the further pressure pads 16.4, 16.5 and the pressure pads 16.6, 16.7 are arranged in pairs opposite to the first three pressure pads 16.1 to 16.3.
  • only five pressure pads 16.1 to 16.5 are provided, wherein each three pressure pads are arranged diametrically, so that a cross-shaped orientation of the pressure pad 16.1 to 16.5 results.
  • FIG. 6a The perspective view of Figure 6a shows the retaining flange 6 laterally from below.
  • a further pressure medium connection 6.14 is provided which supplies pressure medium to the annular channel 6.11 according to Figure 4.
  • the pressure medium connections 6.14 to 6.14" are in the range of one not shown here Clamping surface of the retaining flange 6, so that they are coupled when setting the retaining flange 6 in the tool chuck, not shown here directly to a compressed air control line 1.3 of the tool chuck.
  • FIG. 6b shows the perspective top view, laterally from above, with the membrane 7.1 and the pressure pads 16.1 to 16.7 arranged therein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (20)

  1. Polissoir (1) pour lentilles optiques (10) avec au moins un coussin polisseur (7), avec une membrane (7.1), pouvant être adapté au moins partiellement à la forme d'une surface de lentille (10.1) des lentilles (10) et pouvant être entraîné via un arbre d'entraînement (3), une force d'appui de la membrane (7.1) pouvant être transmise par le coussin polisseur (7) au moins dans la direction à angle droit par rapport à une surface de lentille (10.1), et avec un élément de raidissement (2), pouvant être raccordé à la membrane (7.1), qui est constitué de façon indéformable dans une direction parallèle à une surface de la membrane (7.1) et de façon flexible et/ou souple dans une direction à angle droit par rapport à la surface de la membrane (7.1), au moins trois coussins de pression (16.1 - 16.7) étant disposés de façon juxtaposée à l'intérieur du coussin polisseur (7) avec respectivement une membrane de pression (16.1' - 16.3'), coussins de pression qui peuvent être mis en appui et/ou en prétension, indirectement ou directement, contre la membrane (7.1) ou l'élément de raidissement (2), les coussins de pression (16.1 - 16.7) pouvant être alimentés relativement les uns aux autres avec différentes pressions intérieures.
  2. Polissoir (1) selon la revendication 1,
    caractérisé en ce que
    la membrane de pression (16.1'), rapportée à une surface pouvant être mise en appui contre la membrane (7.1) ou l'élément de raidissement (2), est constituée de façon à être plus petite d'au moins 20% qu'une surface de la membrane (7.1) adaptable à la surface de lentille (10.1).
  3. Polissoir (1) selon la revendication 1 ou 2,
    caractérisé en ce que
    la membrane de pression (16.1'), rapportée à la surface pouvant être mise en appui contre la membrane (7.1) ou l'élément de raidissement (2), est constituée de façon ronde, ovale ou en forme d'os.
  4. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    le coussin polisseur (7) est constitué de façon symétrique en rotation et présente un axe de symétrie S, le premier coussin de pression (16.1) étant disposé de façon concentrique par rapport à l'axe de symétrie S, et le deuxième coussin de pression (16.2) ainsi que le troisième coussin de pression (16.3) étant disposés de façon diamétralement opposée.
  5. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    cinq ou sept coussins de pression (16.1 - 16.7) sont prévus, quatre ou six coussins de pression (16.2 - 16.7) étant disposés tout autour du premier coussin de pression (16.1) disposé de façon concentrique.
  6. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    tous les autres coussins de pression (16.4 - 16.7) sont disposés répartis de façon régulière en face des coussins de pression (16.1 - 16.3) disposés de façon diamétralement opposée.
  7. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    une bride de raccordement (6) est prévue pour la fixation de la membrane (7.1), et respectivement une bride de raccordement (6.1 - 6.7) est prévue pour la fixation de la membrane de pression (16.1' - 16.7') respective.
  8. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    la première bride de raccordement (6.1) pour le premier coussin de pression (16.1), la deuxième et la troisième bride de raccordement (6.2, 6.3) pour le deuxième et le troisième coussin de pression (16.2, 16.3), et les autres brides de raccordement (6.4 - 6.7) pour les autres coussins de pression (16.4 - 16.7) peuvent être respectivement rattachées à des niveaux de pression identiques ou différents.
  9. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    l'élément de raidissement (2) est inclus ou intégré au moins partiellement dans la membrane (7.1) ou en ce que l'élément de raidissement (2) est disposé à l'intérieur du coussin polisseur (7) et peut être mis en appui depuis l'intérieur contre la membrane (7.1).
  10. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que l'élément de raidissement (2) est formé de tôle, de matière plastique et/ou de matière plastique renforcée de fibre.
  11. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    l'élément de raidissement (2) présente, dans une direction perpendiculaire à la membrane (7.1), une épaisseur entre 0,1 mm et 5 mm, entre 0,2 mm et 0,8 mm, en particulier 0,3 mm.
  12. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    l'élément de raidissement (2) peut être déformé en une forme torique de base au moyen des coussins de pression (16.1 - 16.7).
  13. Polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    le coussin polisseur (7) présente, pour le logement dans un mandrin d'entraînement, une bride de retenue (6) avec une paroi de guidage (6.9) de forme cylindrique qui sert au guidage radial de la membrane (7.1).
  14. Polissoir (1) selon la revendication 13,
    caractérisé en ce que
    la paroi de guidage (6.9) présente un diamètre intérieur di qui correspond à un diamètre extérieur da de la membrane (7.1).
  15. Polissoir (1) selon la revendication 13 ou 14,
    caractérisé en ce que
    la paroi de guidage (6.9) présente une hauteur hH qui correspond à une hauteur hR de la membrane (7.1).
  16. Polissoir (1) selon une des revendications 13 à 15,
    caractérisé en ce que
    la bride de retenue (6) présente plusieurs raccord de moyen de pression (6.14, 6.14') pour plusieurs canaux de moyen de pression (6.10, 6.10') auxquels respectivement au moins une bride de raccordement (6.1 - 6.7) peut être rattachée.
  17. Polissoir (1) selon une des revendications 13 à 16,
    caractérisé en ce que
    les raccords de moyen de pression (6.14, 6.14') peuvent être raccordés à respectivement au moins une conduite de commande de moyen de pression (1.3) côté entraînement.
  18. Polissoir (1) selon la revendication 17,
    caractérisé en ce que
    la conduite de commande de moyen de pression (1.3) est intégrée côté entraînement dans le mandrin d'entraînement de la bride de retenue (6) et peut être rattachée avec le mandrin d'entraînement à la bride de retenue (6).
  19. Procédé de mise en oeuvre d'un polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    le premier coussin de pression (16.1), avant et/ou pendant l'usinage de la lentille (10) est alimenté avec une pression intérieure supérieure ou inférieure à celle alimentant les autres coussins de pression (16.2 - 16.7).
  20. Procédé de mise en oeuvre d'un polissoir (1) selon une des revendications précédentes,
    caractérisé en ce que
    le deuxième coussin de pression (16.2) et le troisième coussin de pression (16.3), avant et/ou pendant l'usinage de la lentille (10), sont alimentés avec une pression intérieure supérieure ou inférieure à celle alimentant les autres coussins de pression (16.4 - 16.7).
EP05109787A 2004-10-29 2005-10-20 Outil de polissage à plusieurs zones de pression Not-in-force EP1652619B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004052945 2004-10-29

Publications (3)

Publication Number Publication Date
EP1652619A2 EP1652619A2 (fr) 2006-05-03
EP1652619A3 EP1652619A3 (fr) 2006-06-07
EP1652619B1 true EP1652619B1 (fr) 2007-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05109787A Not-in-force EP1652619B1 (fr) 2004-10-29 2005-10-20 Outil de polissage à plusieurs zones de pression

Country Status (3)

Country Link
US (1) US7217176B2 (fr)
EP (1) EP1652619B1 (fr)
DE (1) DE502005000312D1 (fr)

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FR2875155B1 (fr) * 2004-09-10 2006-12-08 Essilor Int Outil de polissage comportant un plateau d'entrainement et un patin amovible pour la finition d'une lentille ophtalmique
FR2900356B1 (fr) * 2006-04-27 2008-07-18 Essilor Int Outil de surfacage d'une surface optique
US20080011597A1 (en) * 2006-07-13 2008-01-17 Spani Wayne W Closed system for continuous removal of ethanol and other compounds
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US20060094341A1 (en) 2006-05-04
US7217176B2 (en) 2007-05-15
DE502005000312D1 (de) 2007-02-22
EP1652619A2 (fr) 2006-05-03

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