EP1807244B1 - Dispositif et procede de reglage de la direction de perçage d'un outil de perçage d'une lentille ophtalmique - Google Patents

Dispositif et procede de reglage de la direction de perçage d'un outil de perçage d'une lentille ophtalmique Download PDF

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Publication number
EP1807244B1
EP1807244B1 EP05796261.5A EP05796261A EP1807244B1 EP 1807244 B1 EP1807244 B1 EP 1807244B1 EP 05796261 A EP05796261 A EP 05796261A EP 1807244 B1 EP1807244 B1 EP 1807244B1
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EP
European Patent Office
Prior art keywords
axis
drilling
lens
drilling tool
pivoting
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 - Lifetime
Application number
EP05796261.5A
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German (de)
English (en)
French (fr)
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EP1807244A1 (fr
Inventor
Michel Essilor International NAUCHE
Jean-Michel Essilor International BARGOT
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 of EP1807244A1 publication Critical patent/EP1807244A1/fr
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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
    • B24B13/005—Blocking means, chucks or the like; Alignment devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5105—Drill press
    • Y10T29/5107—Drilling and other
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5109—Lathe
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5109—Lathe
    • Y10T29/511—Grinding attachment
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/561—Having tool-opposing, work-engaging surface
    • Y10T408/5614—Angularly adjustable surface
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/91—Machine frame
    • Y10T408/93—Machine frame including pivotally mounted tool-carrier
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/91—Machine frame
    • Y10T408/93—Machine frame including pivotally mounted tool-carrier
    • Y10T408/935—Machine frame including pivotally mounted tool-carrier including laterally movable tool-carrier
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/307672—Angularly adjustable cutter head

Definitions

  • the present invention relates generally to the mounting of ophthalmic lenses of a pair of corrective eyeglasses on a frame and more particularly to a method and a device for adjusting the orientation of an ophthalmic lens piercing tool, such as known for example from the document JP-A-08 155 945 .
  • the technical part of the optician's profession is to mount a pair of ophthalmic lenses in or on the frame selected by the wearer, so that each lens is properly positioned facing the corresponding eye of the wearer to best exercise the optical function for which it was designed. To do this, it is necessary to perform a number of operations.
  • the optician After the choice of the frame, the optician must first locate the position of the pupil of each eye in the frame of the frame. It thus determines, mainly, two parameters related to the morphology of the wearer, namely the inter-pupillary distance and the height of the pupil relative to the frame.
  • the trimming of a lens for mounting in or on the frame chosen by the future carrier is to change the contour of the lens to adapt to the frame and / or the desired lens shape.
  • the trimming includes edging for shaping the periphery of the lens and, depending on whether the frame is of circle type or without circles with pinch point through a fixing hole in the lens, beveling and / or the proper drilling of the lens.
  • the edging, (or trimming itself) consists in eliminating the superfluous peripheral part of the ophthalmic lens concerned, to bring back the contour, which is most often initially circular, to that whichever of the circle or surround of the spectacle frame concerned or simply to the desired aesthetic shape when the frame is of the type without circles.
  • This edging operation is usually followed by a chamfering operation which consists of cutting or chamfering the two sharp edges of the edge of the overflow lens.
  • a chamfering operation which consists of cutting or chamfering the two sharp edges of the edge of the overflow lens.
  • these operations of edging, chamfering and beveling are successively conducted on the same trimming device which is generally constituted by a grinding machine, called a grinder, equipped with a set of appropriate wheels.
  • the frame is of the type without circle, with pierced lenses, the trimming of the lens and, possibly, the reduction of the sharp edges (chamfering) are followed by the appropriate drilling of the lenses to allow the fixation of the branches and the nasal bridge of the frame without a circle.
  • the drilling can be performed on the grinder which is then equipped with the corresponding tooling or on a separate drilling machine.
  • there is general interest in the accuracy and cost of the different degrees of mobility used for this drilling In addition to this general problem, we are more specifically interested in the case where the drilling is performed on the grinder or, more generally, on the machine incorporating the clipping means. This machine is then provided, in addition to the clipping means, drilling specific means.
  • the holes of the lenses are currently, most often, made by manual operations of occasions. Their accuracy of realization is therefore directly related to the dexterity of the operator who performs the drilling operations.
  • a lens trimming grinder mainly comprises, on a frame, on the one hand a machining station, which is equipped with one or more grinding wheel (s) and one or more grinding wheel (s) beveling, and possibly chamfering, rotatably mounted about an axis under the control of a drive motor, and secondly a carriage, which is equipped, parallel to the axis of said wheels, two coaxial shafts locking and rotational drive of the lens.
  • These two shafts are mounted to rotate about their common axis (which is also the locking pin) under the control of one or two drive motor (s) and to slide axially relative to each other under the control of another engine.
  • the two shafts each have a free end facing each other and the free ends of the two shafts, which face each other, are thus able to block by axial clamping the lens to be treated.
  • the carriage is mounted movably on the chassis, on the one hand transversely to the axis of the grinding wheels, under the control of support means urging it towards said axis (following a movement called "restitution"), and, on the other hand, axially, parallel to the axis of these wheels, under the control of appropriate control means (following a movement called "transfer").
  • this carriage For its transverse displacement relative to the axis of the wheels (restitution), which is necessary for the application of the ophthalmic lens to be treated against them in order to reproduce the different rays describing the desired lens contour, this carriage can for example be mounted pivoting parallel to this axis (the carriage is then usually called "rocker"), or be movably mounted in translation perpendicular thereto.
  • Drilling and / or grooving and / or chamfering modules may optionally be embedded on a mobile support to allow, if necessary, the drilling or scoring of the lens after its trimming.
  • An object of the present invention is to provide a solution to the problem of accuracy and cost mentioned above.
  • a method for adjusting the orientation of the drilling axis of an ophthalmic lens piercing tool, around at least one axis of orientation substantially transverse to said piercing axis comprising a pivoting of the drilling axis about said orientation axis, characterized in that, for adjusting the orientation of the drilling axis, the pivoting of the drilling axis about said axis of orientation is controlled by means of a first relative displacement, in translation or tilting, of the piercing tool with respect to the piercing lens, distinct from the pivoting of the piercing axis of the piercing tool around said axis of rotation. 'orientation.
  • This provides a simple and precise adjustment of the orientation of the drilling axis of the drilling tool, may use the mobilities of other bodies of the drilling machine and, optionally, trimming on which the device setting is implemented. It is observed that the pivoting of the drilling tool around the axis of orientation is achieved with the means of transverse mobility and not with specific means only for pivoting the drilling tool. However, these means of transverse mobility of the drilling tool are in any case necessary to adjust the relative position of the drilling tool relative to the lens to properly position the drilling tool opposite the location where the lens needs to be pierced. In addition, to perform this position adjustment, these means of transverse mobility must be accurate.
  • transverse mobility means in addition to their first function of adjusting the position of the drilling tool in the plane of the lens, a second adjustment function of the orientation. the axis of this piercing tool relative to the lens to drill in the desired orientation.
  • the trimming device according to the invention can be made in the form of any cutting or material removal machine adapted to modify the contour of the ophthalmic lens to adapt it to that of the frame or "circle" of a frame selected.
  • a machine may consist for example of a grinder, as in the example described below, but also in a milling machine or cutting laser or jet water, etc.
  • the shaping device comprises, in a manner known per se, an automatic grinder 10, commonly known as digital.
  • This grinder comprises, in this case, a rocker 11, which is mounted pivotally pivotable about a first axis A1, in practice a horizontal axis, on a frame 1. This pivoting is controlled, as we shall see in more detail by the following.
  • the grinder is equipped with two clamping shafts 12, 13. These two shafts 12, 13 are aligned with each other. one with the other along a second axis A2, called blocking axis, parallel to the first axis A1.
  • the two shafts 12, 13 are rotated synchronously by a motor (not shown), via a common drive mechanism (not shown) embedded on the rocker 11.
  • This common synchronous rotation drive mechanism is of type current, known in itself.
  • the rotation ROT of the shafts 12, 13 is controlled by a central electronic and computer system (not shown) such as an integrated microcomputer or a set of dedicated integrated circuits (ASIC).
  • a central electronic and computer system such as an integrated microcomputer or a set of dedicated integrated circuits (ASIC).
  • Each of the shafts 12, 13 has a free end which faces the other and which is equipped with a locking nose 62, 63.
  • the two locking noses 62, 63 are generally of revolution about the axis A2 and each have a generally transverse application face 64, 65, arranged to bear against the corresponding face of the ophthalmic lens L.
  • the nose 62 is integral and is fixed without any degree of mobility, neither sliding nor rotating, on the free end of the shaft 12.
  • the nose 63 comprises two parts: a pellet of application 66 intended to cooperate with the lens L and carrying for this purpose the useful face 65 and a tail 67 arranged to cooperate with the free end of the shaft 13, as we shall see in more detail later.
  • the pellet 66 is attached to the tail 67 by a cardan link 68 transmitting rotation about the axis A2 but allowing the orientation of the pellet 66 about any axis perpendicular to the axis A2.
  • the useful faces 64, 65 of the noses are preferably covered with a thin lining of plastic material or elastomeric material. The thickness of this lining is of the order of 1 to 2 mm. This is for example a soft PVC or a neoprene.
  • the shaft 13 is movable in translation along the blocking axis A2, facing the other shaft 12, to effect the compression in axial compression of the lens L between the two locking noses 62, 63.
  • the shaft 13 is controlled for this axial translation by a drive motor via an actuating mechanism (not shown) controlled by the central electronic and computer system.
  • the other shaft 12 is fixed in translation along the blocking axis A2.
  • the trimming device comprises, on the other hand, a train of at least one grinding wheel 14, which is locked in rotation on a third axis A3 parallel to the first axis A1, and which is also properly driven in rotation by a non-rotating motor.
  • a train of at least one grinding wheel 14 which is locked in rotation on a third axis A3 parallel to the first axis A1, and which is also properly driven in rotation by a non-rotating motor.
  • the grinder 10 comprises a set of grinding wheels 14 mounted coaxially on the third axis A3, for a roughing and finish of the edging of the ophthalmic lens 12 to be machined.
  • These different grinding wheels are each adapted to the material of the cut-out lens and the type of operation performed (roughing, finishing, mineral or synthetic material, etc.).
  • the grinding wheel is attached to a common shaft of axis A3 ensuring their rotational drive during the edging operation.
  • This common shaft which is not visible in the figures, is controlled in rotation by an electric motor 20 controlled by the electronic and computer system.
  • the wheel train 14 is also movable in translation along the axis A3 and is controlled in this translation by a controlled motor.
  • the set of wheels 14, its shaft and its motor is carried by a carriage 21 which is itself mounted on slides 22 integral with the frame 1 to slide along the third axis A3.
  • the translational movement of the grinding carriage 21 is called “transfer” and is noted TRA on the figures 2 .
  • This transfer is controlled by a motorized drive mechanism (not shown), such as a screw and nut or rack system, controlled by the central electronic and computer system.
  • the pivoting capacity of the lever 11 around the axis A1 is used.
  • This pivoting causes indeed a displacement, here substantially vertical, of the lens L sandwiched between the shafts 12, 13 which brings the lens closer to or away from the grinding wheels 14.
  • This mobility which makes it possible to restore the shape of the desired and programmed edging in a system electronic and computer, is called restitution and is noted RES in the figures.
  • This RES restitution mobility is controlled by the central electronic and computer system.
  • the grinder 10 comprises, for this restitution, a rod 16, which, articulated to the frame 1 about the same first axis A1 as the rocker 11 at one of its ends, is articulated, at the other of its ends, following a fourth axis A4 parallel to the first axis A1, to a nut 17 movably mounted along a fifth axis A5, commonly called restitution axis, perpendicular to the first axis A1, with intervening between this link 16 and the rocker 11, a contact sensor 18. also.
  • This contact sensor 18 is, for example, constituted by a Hall effect cell or a simple electrical contact.
  • the nut 17 is a threaded nut screwed with a threaded rod 15 which, aligned along the fifth axis A5, is rotated by a rendering motor 19.
  • This motor 19 is driven by the central electronic and computer system. T was noted the pivot angle of the rocker 11 about the axis A1 relative to the horizontal. This angle T is associated with the vertical translation, denoted R, of the nut 17 along the axis A5.
  • the ophthalmic lens L to be machined When, properly enclosed between the two shafts 12, 13, the ophthalmic lens L to be machined is brought into contact with the grinding wheel 14, it is the object of an effective material removal until the rocker 11 abuts against the rod 16 according to a support which, being at the level of the sensor contact 18, is duly detected by it.
  • the grinder illustrated by the figure 2 further comprises a finishing module 25 which embeds chamfering and grooving grinding wheels 30, 31 mounted on a common axis 32 and which is movable according to a degree of mobility, in a direction substantially transverse to the axis A2 of the shafts 12, 13 maintaining the lens and the axis A5 of the restitution RES.
  • This degree of mobility is called retraction and is noted ESC in the figures.
  • this retraction consists of a pivoting of the finishing module 25 around the axis A3.
  • the module 25 is carried by an arm 26 secured to a tubular sleeve 27 mounted on the carriage 21 to pivot about the axis A3.
  • the sleeve 27 is provided, at its end opposite the arm 26, a toothed wheel 28 which meshes with a pinion (not visible in the figures) fitted to the shaft of an electric motor 29 secured to the carriage 21.
  • the general object of the invention is to integrate a drilling function to this grinder.
  • the module 25 is provided with a drill 35 whose pin is equipped with a mandrel 36 for fixing a drill 37 along a drilling axis A6.
  • the drill 35 is mounted on the module 25 to pivot about an axis of orientation A7 substantially transverse to the axis A3 of the grinding wheels 14 and to the restitution axis A5 and thus substantially parallel to the direction of rotation. ESC retraction of the module 25.
  • the drilling axis A6 is thus orientable about the axis of orientation A7, that is to say in a plane close to the vertical.
  • This pivoting orientation of the drill 35 is noted PIV in the figures. This is the only degree of mobility dedicated to drilling.
  • the integration of the drilling function within an edging machine implies that the drilling tool is properly positioned opposite the position of the hole to be drilled on the lens. It is desired according to the invention to achieve this positioning by optimizing the use of degrees existing machining mobility and especially by avoiding creating additional degrees of mobility and / or control mechanisms dedicated to drilling.
  • this positioning is achieved by means of two pre-existing degrees of mobility, independently of the drilling function, which are the retraction ESC on the one hand and the transfer TRA on the other hand. These two degrees of mobility, retraction and transfer are furthermore used to provide an orientation of the drilling axis A6 of the drill 35.
  • the storage position itself is the subject of the present invention and will not be described in more detail.
  • the body 34 of the drill 35 has a cylindrical shaft 40 of axis A7 which is pivotally received in a corresponding bore 41 of the same axis A7 formed in the body 42 of the module 25.
  • the drill 35 can thus pivot about the axis of orientation A7 over a range of angular positions corresponding to as much inclination of the axis of drilling A6 with respect to the lens to be pierced when the module 25 will come into the piercing position.
  • This range of angular positions is physically delimited by two angular stops integral with the body 42 of the module 25, visible on the figure 4 .
  • the pivoting of the sleeve 40 about the axis A7 is braked permanently by friction braking means.
  • These braking means are here produced in the form of a drum-type brake comprising a piston 50 of axis A8 perpendicular to the axis A7.
  • This piston is received in a bore 43 of A8 axis which opens inside the bore 41 of the handle 40.
  • the piston 50 can slide along the axis A8. It has an end 51 which is located facing the handle 40 of the drill 35 and which is provided with a protrusion 52 of trapezoidal section forming a crescent brake segment adapted to cooperate with a groove 53 of corresponding trapezoidal section formed on the outer face of the handle 40 which then forms a brake drum.
  • a return spring 47 is partially received inside the piston 50, which is recessed. This spring is compressed between on the one hand the bottom of the recess of the piston 50 and on the other hand a plug 55 attached in the bore 43 of the body 42 of the module 25.
  • the segment 52 of the piston 50 is thus constantly recalled against the handle 40 of the drill 35 for exerting friction by braking the pivoting of the handle 40 of the drill 35 around the axis of orientation A7.
  • the segment 52 and / or the groove 53 may be provided with a suitable friction lining.
  • the braking piston 50 is not disengageable and thus exerts its braking permanently. It would, however, be possible to provide means for disengaging the locking of the pivoting of the drill around its axis of orientation. Such disengaging means could then be activated during the engagement of the means for adjusting the orientation of the drill.
  • the braking obtained must be sufficient to withstand the torque generated during drilling, by the drilling and contouring forces.
  • the means for adjusting the orientation of the drilling axis A6 of the drill 35 around the axis of orientation A7 consist of two parts movable with respect to each other according to two degrees of mobility: a degree of commitment mobility allowing the mutual commitment and disengagement of two parts and a degree of adjustment mobility allowing, after engagement of the two parts of the adjusting means, their dynamic cooperation to rotate the drill 35 about the axis of orientation A7 to adjust the inclination of the drilling axis A6 around the A7 axis.
  • the adjustment means comprise, firstly, a finger 38 secured to the body 34 of the drill 35 and provided with a spherical end 39 and, secondly, a plate 50 carrying a path of cam 51 and secured to the frame 1 of the grinder.
  • the plate 50 has a plane useful face 58 which is substantially perpendicular to the transfer direction TRA, or in other words, in the example shown, to the axes A2 and A3. As the axes A2 and A3 are here horizontal, the useful face 58 of the plate 50 is vertical. When the module 25 is in its angular range of adjustment, as illustrated by the figures 2 , 3 , 9 , 10 , 11 , 12 , the useful face 58 of the plate 50 is located facing the end 39 of the finger 38 of the drill 35.
  • the engagement zone 53 of the trench 51 is flared in the direction of the storage position of the module 25, to allow engagement of the end 39 of the finger 38 in the trench 51 regardless of the inclination of the drill 35 around the axis of orientation A7 on the angular range delimited by the angular stops of the module 25.
  • the engagement zone 53 of the trench has an upper wall 56 and a lower wall 57, planar or slightly curved, which form a dihedral angle greater than 20 degrees, for example 35 degrees.
  • the bottom wall 57 has an upward slope with reference to the direction of the retraction movement ESC from the module 25 to the piercing position.
  • the adjustment portion 52 has an upper wall 54 and a lower wall 55 which are parallel, with, relative to the direction of the retraction movement ESC of the module 25 which is substantially horizontal, a slope of sign opposite to that of the ramp This slope is here descending with reference to the direction of the retraction movement ESC of the module 25 to the piercing position.
  • the adjustment of the inclination of the axis of drilling A6 around the axis of orientation A7 is done automatically, under the control of the electronic and computer system, by exploiting the transfer mobilities TRA and retraction ESC of the module for cooperating the finger 38 of the drill with the cam plate 50 and more precisely with, first, the lower ascending face 57 of the docking area and engagement 53, then the upper face 54 of the adjustment portion 52.
  • the adjustment operation is broken down into five steps implementing a degree of mobility of the module 25.
  • the electronic and computer system controls the mobility of retraction to bring the module 25 into a predetermined docking position, always identical, in which the end 39 of the finger 38 of the drill 35 is in position. look at the docking area 53 of the platen.
  • the electronic and computer system controls the transfer mobility TRA to bring the end 39 of the finger 38 of the drill 35 into the zone of FIG. 53 of the trench 51, as illustrated by the figure 9 .
  • the upper wall 56 does not exert a mechanical function. It deviates sufficiently from the lower wall 57 to allow the docking of the end 39 of the finger 38, even in the extreme angular position of the drill. The end 39 of the finger 38 therefore does not come into contact with this upper wall 56 at any time.
  • the electronic and computer system controls the ESC retraction mobility of the module 25 to bring it to its piercing position.
  • the reset function of the zone 53 of the trench 51 is exerted by the bottom wall 57 which forms for the end 39 of the finger 38 a reset ramp.
  • This reset ramp 57 is in fact arranged obliquely on the path of the end 39 of the finger 38 of the drill 35 during the ESC retraction pivoting of the module 25, so that during this pivoting retraction of the module 25 toward its piercing position towards the lens, the end 39 of the finger 38 engages and rests on the reset ramp 57 by being forced by it to rotate the drill 35 around it.
  • axis of orientation A7 to an initial angular position corresponding to a parallelism of the drilling axis A6 with the axis A2 of maintenance and rotation of the lens. This initial angular position is reached, as illustrated by the figure 10 when the spherical end 39 of the finger 38 reaches the top of the reset ramp 57.
  • the electronic and computer system continues, as in the previous reset step, to control the retraction mobility ESC of the module 25 to bring it closer to its piercing position.
  • the end 39 of the finger 38 continuing its stroke resulting from the pivoting ESC of the module 25 towards its piercing position, is supported by the adjusting portion 52 of the trench 51 .
  • the lower wall 55 does not exert a mechanical function and does not come into contact with the end 39 of the finger 38 at any time.
  • the inclination adjustment function of the adjustment portion 52 is ensured by the upper wall 54 which shape for the end 39 of the finger 38 a ramp inclination adjustment.
  • This adjustment ramp 54 is in fact arranged obliquely on the path of the end 39 of the finger 38 of the drill 35 during the pivoting retraction ESC of the module 25.
  • the oblique of the adjustment ramp 54 is opposite to that of the reset ramp 57, so that, during this pivoting retraction of the module 25 towards its piercing position, towards the lens beyond the top of the reset ramp 57, the end 39 of the finger 38 engages the adjustment ramp 54 and slides on it being forced by it to rotate the drill 35 about the axis of orientation A7, from its initial angular position to an angular position corresponding to the desired orientation of the drilling axis A6, as illustrated by FIG. Figure 11 .
  • the ESC retraction pivoting of the module 25 is stopped by the electronic and computer system.
  • the device is then in the configuration of the figure 11 .
  • the electronic and computer system controls the transfer transfer TRA wheels to disengage the finger 38 from the cam plate 50, as illustrated by the figure 12 .
  • the drill 35 is then kept locked, oriented according to the adjustment just made, by the braking action exerted by the piston 50 on the handle 40.
  • FIGS. Figures 14 and 15 Another embodiment of the device and method for adjusting the orientation of the axis A6 of drill 37 of the drill is shown in FIGS. Figures 14 and 15 .
  • the elements of the grinder identical to those of the embodiment previously described and illustrated by the Figures 1 to 13 have been designated by the same reference numbers.
  • a lever 60 which is integral with the body 34 of the drill 35 and which extends longitudinally in a direction transverse to the axis of orientation A7 and forming an angle of between 30 and 50 degrees with the axis of drilling A6 of the drill 37.
  • This lever 60 is able to come opposite a fixed stop of tilting 61 associated with the frame 1 of the grinder, after the module 25 has been brought to the appropriate position by virtue of its movement. ESC retraction.
  • the electronic and computer system controls the retraction pivot ESC of the module 25 for this purpose.
  • the lever 60 then extends obliquely with respect to the transfer direction TRA.
  • the electronic and computer system controls the transfer transfer TRA wheels 14 and 25, so that the lever 60 engages with the stop 61 and, sliding on this stop, causes by a ramp game the pivoting of the lever 60 and hence the body 34 of the drill 35 which it is secured.
  • the transfer movement TRA is stopped when the desired orientation of the drilling axis A6 is obtained and the lever 60 is then disengaged from the stop 61 by an ESC retraction pivot opposite to that which allowed the engagement.
  • this mode of adjusting the orientation of the drill makes it possible to obtain an orientation adjustment over a wide angular displacement and allows in particular, not only to fine-tune the precise orientation of the normal drilling at the front face of the lens, but also to rotate the drill up to 110 degrees from its original position parallel to the axis A2 to drill the lens on its edge, with a precise orientation adjustment in a drilling direction substantially parallel to the median plane of the lens (between the planes tangent to the front and rear faces of the lens) in the piercing zone.
  • the electronic and computer system controls the retraction pivot ESC of the module 25 to bring the module 25 opposite the lens to be pierced L. More precisely, this control of the retraction ESC positions the drill 37 of the piercing tool 35 with respect to the piercing lens L such that the drilling axis A6 of the drill 37 is in alignment with the desired drilling axis, suitably positioned and oriented with respect to the lens L.
  • the first component of the drilling advance is thus obtained by using the transfer TRA which constitutes an axial translation of the grinding wheels 14 along the axis A3 which is moreover substantially parallel to the axis A2 of the piercing lens L. observes that this transfer axis A3 is fixed and can not be modified according to the orientation of the drilling axis A6. In other words, the direction of the TRA transfer is distinct and independent of the orientation of the drilling axis A6.
  • This difference in orientation of the drilling axis A6 with respect to the transfer axis A3 is compensated by a relative relative transverse displacement of the lens L relative to the piercing tool 35, in translation or tilting. in a direction substantially perpendicular to the axis of orientation A7 of the drilling axis A6.
  • the electronic and computer system controls in this case the restitution pivot RES of the flip-flop 11.
  • the transverse displacement of RES restitution is accompanied by a parasitic movement E along the axis of orientation A7 of the drilling tool 35.
  • this parasitic movement keeps a deflection of less than 0 , 2 mm, and preferably less than 0.1 mm, on the useful stroke C.
  • the parasitic transverse displacement E along the axis of orientation A7 is constituted by the distance between the plane P (A6) and the surface S (A2). This parasitic movement is maximum here at the end of the stroke C where it has been identified by the reference Emax.
  • the axis of orientation A7 of the drilling axis A6 of the drilling tool 35 is arranged in such a way that the drilling plane P (A6) is, on the useful drilling stroke C, close to the surface S (A2) described by the axis A2 of the lens.
  • the electronic and computer system does not trigger any ROT rotation of the L lens around the A2 axis.
  • the shafts 12, 13 therefore remain motionless in rotation during drilling.
  • the electronic and computer system controls a rotation ROT of the shafts 12, 13 about the axis A2 according to a dynamic function independent of the orientation of the drilling axis, for example according to a rotation ROT at constant speed or dependent only on the restitution pivoting speed RES of the flip-flop 11 and / or the translation speed of the transfer TRA of the grinders 14 and the module 25.
  • the electronic and computer system controls the ESC retraction movement to store the module 25 under its hood.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Drilling And Boring (AREA)
  • Eyeglasses (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP05796261.5A 2004-10-20 2005-08-04 Dispositif et procede de reglage de la direction de perçage d'un outil de perçage d'une lentille ophtalmique Expired - Lifetime EP1807244B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0411174A FR2874526B1 (fr) 2004-10-20 2004-10-20 Dispositif et procede de reglage de la direction de percage d'un outil de percage d'une lentille ophtalmique
PCT/FR2005/002028 WO2006042917A1 (fr) 2004-10-20 2005-08-04 Dispositif et procede de reglage de la direction de perçage d'un outil de perçage d'une lentille ophtalmique

Publications (2)

Publication Number Publication Date
EP1807244A1 EP1807244A1 (fr) 2007-07-18
EP1807244B1 true EP1807244B1 (fr) 2013-10-09

Family

ID=34950163

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Application Number Title Priority Date Filing Date
EP05796261.5A Expired - Lifetime EP1807244B1 (fr) 2004-10-20 2005-08-04 Dispositif et procede de reglage de la direction de perçage d'un outil de perçage d'une lentille ophtalmique

Country Status (8)

Country Link
US (1) US7975355B2 (enExample)
EP (1) EP1807244B1 (enExample)
JP (1) JP5154938B2 (enExample)
KR (1) KR101293657B1 (enExample)
CN (1) CN101043976B (enExample)
ES (1) ES2441730T3 (enExample)
FR (1) FR2874526B1 (enExample)
WO (1) WO2006042917A1 (enExample)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4841269B2 (ja) * 2006-02-28 2011-12-21 株式会社ニデック 眼鏡レンズ加工装置
FR2906746B1 (fr) * 2006-10-10 2009-05-22 Essilor Int Dispositif d'usinage de lentilles ophtalmiques comprenant une pluralite d'outils d'usinage disposes sur un module orientable
FR2912335B1 (fr) * 2007-02-13 2009-04-17 Essilor Int Machine de detourage d'une lentille de lunettes,pourvue d'un porte-outils tournant sur lequel sont montes plusieurs outils de travail
KR101079037B1 (ko) * 2008-09-30 2011-11-02 주식회사 휴비츠 드릴링 장치를 구비한 안경렌즈 가공장치
FR2962676B1 (fr) * 2010-07-13 2012-08-03 Essilor Int Procede de detourage d'une lentille ophtalmique de lunettes comportant un film de revetement.
FR2972382B1 (fr) * 2011-03-10 2013-04-26 Briot Int Machine de meulage de verres optiques et procede de meulage associe
FR3002871B1 (fr) * 2013-03-08 2015-03-13 Essilor Int Dispositif de detourage de lentilles ophtalmiques
FR3008914B1 (fr) * 2013-07-26 2015-09-04 Essilor Int Procede et machine de gravure de lentilles optiques
USD740949S1 (en) * 2013-09-09 2015-10-13 Essilor International (Compagnie Générale d'Optique) Ophthalmic lens edger
EP3075508B1 (en) * 2015-03-31 2019-07-31 Nidek co., Ltd. Eyeglass lens processing apparatus, eyeglass lens processing control data acquisition apparatus and eyeglass lens processing method
JP6503837B2 (ja) * 2015-03-31 2019-04-24 株式会社ニデック 眼鏡レンズ加工装置
JP6596878B2 (ja) * 2015-03-31 2019-10-30 株式会社ニデック 眼鏡レンズ加工装置、及び眼鏡レンズ加工プログラム
US20180272493A1 (en) * 2017-03-23 2018-09-27 Ncrx Optical Solutions Inc. Manually operated lens cribber
CN118253812B (zh) * 2024-05-11 2024-11-29 苏州市职业大学 一种歪转型蒸汽喷嘴打孔装置

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JPS61236411A (ja) * 1985-04-09 1986-10-21 Kiyokuyou Kogyo Kk 穿孔部の面取り装置
DE4330058A1 (de) * 1993-09-06 1995-03-09 Fischer Artur Werke Gmbh Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung
DE19524391A1 (de) * 1994-07-09 1996-01-11 Wernicke & Co Gmbh Verfahren zum Polieren sowie ggf. Bohren, Schneiden und Schweißen von Brillengläsern
JP3602175B2 (ja) * 1994-12-09 2004-12-15 株式会社トプコン リムレスレンズ用穴開け装置とこれを用いた玉摺機とこの玉摺機に使用されるメガネ用形状測定装置
DE19514379A1 (de) * 1995-04-19 1996-10-24 Fischer Artur Werke Gmbh Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung
JP3807647B2 (ja) * 1997-11-11 2006-08-09 コマツ工機株式会社 カムシャフト加工機
DE19804428A1 (de) * 1998-02-05 1999-08-19 Wernicke & Co Gmbh Verfahren zum Markieren oder Bohren von Löchern in Brillengläsern und Vorrichtung zur Durchführung des Verfahrens
JP3916445B2 (ja) * 2001-11-08 2007-05-16 株式会社ニデック 眼鏡レンズ加工装置
FR2838364B1 (fr) * 2002-04-12 2005-01-07 Essilor Int Procede de chanfreinage d'une lentille ophtalmique comporatnt une etape de releve sans contact
JP4098046B2 (ja) * 2002-09-20 2008-06-11 株式会社トプコン レンズ研削加工装置
CN2644088Y (zh) * 2003-07-28 2004-09-29 信咚企业股份有限公司 钻孔机激光辅助中心对准装置
JP4290672B2 (ja) * 2005-04-28 2009-07-08 株式会社ニデック 眼鏡レンズ周縁加工装置

Also Published As

Publication number Publication date
EP1807244A1 (fr) 2007-07-18
WO2006042917A1 (fr) 2006-04-27
KR20070073923A (ko) 2007-07-10
KR101293657B1 (ko) 2013-08-13
CN101043976A (zh) 2007-09-26
US20090047081A1 (en) 2009-02-19
CN101043976B (zh) 2010-12-15
JP5154938B2 (ja) 2013-02-27
FR2874526B1 (fr) 2008-01-25
US7975355B2 (en) 2011-07-12
ES2441730T3 (es) 2014-02-06
WO2006042917A8 (fr) 2007-05-18
FR2874526A1 (fr) 2006-03-03
JP2008517340A (ja) 2008-05-22

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