EP1996368B9 - Verfahren zur steuerung einer sonde zur rillenmessung bei einem brillengestellrand und entsprechendes messgerät - Google Patents

Verfahren zur steuerung einer sonde zur rillenmessung bei einem brillengestellrand und entsprechendes messgerät Download PDF

Info

Publication number
EP1996368B9
EP1996368B9 EP07731098A EP07731098A EP1996368B9 EP 1996368 B9 EP1996368 B9 EP 1996368B9 EP 07731098 A EP07731098 A EP 07731098A EP 07731098 A EP07731098 A EP 07731098A EP 1996368 B9 EP1996368 B9 EP 1996368B9
Authority
EP
European Patent Office
Prior art keywords
feeler
speed
axis
component
rotation
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
EP07731098A
Other languages
English (en)
French (fr)
Other versions
EP1996368A1 (de
EP1996368B1 (de
Inventor
Christophe Sillon
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
Publication of EP1996368A1 publication Critical patent/EP1996368A1/de
Application granted granted Critical
Publication of EP1996368B1 publication Critical patent/EP1996368B1/de
Publication of EP1996368B9 publication Critical patent/EP1996368B9/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
    • B24B9/144—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms the spectacles being used as a template

Definitions

  • the present invention relates generally to the field of eyewear and more specifically the probing of the bezel of a frame rimmed glasses.
  • It relates more particularly to a method of reading the outline of the bezel of a spectacle frame circle comprising a step of contacting a probe against the bezel and a step of probing the bezel by sliding or rolling said probe along the bezel, the position of the probe being determined and the probe speed comprising first, second and third components.
  • the method finds a particularly advantageous application by its application to glasses with elongated or strongly arched frames.
  • the objective of this operation is in particular to follow exactly the bottom of the bezel that includes the circle to read so as to memorize a precise digital image of the geometry of the bezel.
  • the document US 6,871,158 has a bezel tracking device provided to overcome the problems of inaccuracies in the reading of the bezels due to the deformation of the frames during the passage of the probe.
  • This device comprises in particular means for identifying the type of frame to be read and means for controlling the speed of rotation of the probe for sliding along the complete contour of the bezel.
  • this device is adapted to determine the type of the frame to be read, then, depending on whether this type of frame is characteristic or not of a frame that can encounter problems of deformation, to control the probe in rotation at a speed depending on the type of frame, constant on the whole bezel.
  • this device can provide for splitting the outline of the bezel into different predetermined zones in which the speed of rotation of the feeler is constant but between which it varies.
  • the disadvantage of such a device is that to substantially improve the reading accuracy of the bezel, it is necessary to very strongly reduce the speed of rotation of the feeler along the entire bezel, which greatly increases and detrimental to the reading time of the outline of the bezel, it is necessary to divide the outline of the bezel into different zones, in which case the applicant has noticed that there are reading.
  • the splitting operation is further manually performed by the operator on a suitable interface, which requires experience and takes time.
  • the methods described each comprise a step of contacting the feeler against the bezel of the spectacle frame and a step of probing the bezel.
  • the motors are controlled to vary the position of the probe according to the curvature of the bezel of the frame, so that the probe follows this bezel and does not.
  • the present invention provides a method of fast contour reading and providing accurate results.
  • a contour reading method as defined in the introduction, wherein the first component of the speed of the probe is dynamically controlled to vary, continuously or in steps, during reading according at least one or the other of the second and third components of the probe speed.
  • the probe generally has the shape of an elongate rod along a probing axis and is conventionally driven in rotation about an axis of rotation for sliding along the complete contour of the bezel.
  • the probing axis of the probe can not be constantly presented orthogonally to the tangent to the outline of the bezel. Therefore, the longer the frame is elongated, the more the probe is presented inclined with respect to the bezel in certain areas of the frame, particularly near the nasal and temporal areas of the frame. When the frame is strongly arched, this inclination can present in these same areas very important values.
  • the control means reduce the first component of the probe speed so as to lower the bending forces to increase the accuracy of the measurements.
  • the probe being provided with three degrees of freedom
  • the first, second and third components of the probe speed are each associated with one of the three degrees of freedom of the sensor. probe.
  • the probe rotating around an axis of rotation for its sliding along the complete contour of the bezel of the eyeglass frame circle
  • the first component of the probe speed is constituted by the speed of rotation of the probe around said axis of rotation.
  • the second component of the speed of the probe is a transverse component of the speed of the probe axis perpendicular to the axis of rotation of the probe.
  • the third component of the speed of the probe is an axial component of the speed of the probe axis parallel to the axis of rotation of the probe.
  • the first component of the probe speed decreases when the second and / or third component of the probe speed increases.
  • the second and the third components of the probe speed varying one and the other continuously each in a range of intervals interval velocities, the means of control change the first component of the probe speed when the second and / or third component of the probe speed changes interval.
  • the method therefore provides for varying the first component of the speed of the probe in steps such that the probe has a constant and high speed of rotation in the areas other than these localized areas of the frame, and a lower speed in these localized areas.
  • the present invention also provides a contour reading apparatus as defined in the introduction, wherein the determining means is adapted to determine at least one and / or the other of the second and third components of the probe speed. and the control means are capable of driving dynamically, continuously or in stages, the first component of the speed of the probe as a function of at least the second and / or third component of the speed of the probe determined by the determination means.
  • the contour reading apparatus comprises a turntable rotatably mounted about the axis of rotation relative to the mounting means of the frame, this turntable carrying a reading subassembly which comprises the movable feeler of one part in a direction parallel to the axis of rotation and secondly in a plane transverse to the axis of rotation, the reading subassembly further comprises another axis of rotation called transverse bearing axis on the surface of the turntable and a support arm which, at one of its ends, is rotatably mounted around said carrier axis and on which is embarked at the other end of said probe.
  • a reading subassembly which comprises the movable feeler of one part in a direction parallel to the axis of rotation and secondly in a plane transverse to the axis of rotation
  • the reading subassembly further comprises another axis of rotation called transverse bearing axis on the surface of the turntable and a support arm which, at one of its ends, is rotatably mounted
  • the reading subassembly pivoting about the carrier axis the probe rod may have a very large inclination relative to the normal to the tangent to the bezel. This inclination depends in fact on the shape of the frame, but also on the angular position of the reading subassembly around the bearing axis. Consequently, the control means make it possible to control the speed of rotation of the turntable, which corresponds here to the first component of the speed of the probe, as a function of the second and third components of the speed of the probe, which makes it possible to take account of not only the shape of the frame (elongated and / or arched) but also the angular position of the reading subassembly.
  • the figure 1 is a general view of a contour reading apparatus 1 as it is presented to its user.
  • This apparatus comprises an upper cover 2 covering the entire apparatus except for a central upper portion.
  • the contour reading device 1 also comprises a set of two jaws 3, at least one of the jaws 3 is movable with respect to the other so that the jaws 3 can be moved closer to each other or separated from each other. form a clamping device.
  • Each of the jaws 3 is further provided with two clamps each formed of two movable studs 4 to be adapted to clamp together a frame 10 of spectacles. The frame 10 can then be held stationary on the contour reading device 1.
  • a frame 5 In the space left visible by the upper central opening of the cover 2, a frame 5 is visible.
  • a plate (not visible) can move in translation on this frame 5 according to a transfer axis D.
  • On this plate is mounted rotating 6.
  • This turntable 6 is therefore able to take two positions on the transfer axis D, a first position in which the center of the turntable 6 is disposed between the two pairs of studs 4 fixing the right circle of the mount 10, and a second position in which the center of the turntable 6 is disposed between the two pairs of studs 4 fixing the left circle of the frame 10.
  • the right circle and the left circle of the frame are circles intended to be respectively positioned opposite the right eye and the left eye of the wearer when the latter carries said frame.
  • the turntable 6 has an axis of rotation B defined as the axis normal to the front face of the turntable 6 and passing through its center.
  • the turntable 6 further comprises an oblong slot 7 in the form of an arc of a circle through which a feeler 8 has a bearing rod 8A and at its end a feeler pin 8B intended to follow by sliding or possibly rolling the contour of the frame 10 palpated.
  • the turntable 6 is guided in rotation about a first axis, its axis of rotation B, by three guide rollers (not shown) arranged regularly along its periphery and held on the plate 5 of the reading device of FIG. contour 1.
  • the rotation of the plate 6 is controlled by a motor-encoder (not shown) whose output shaft is provided with a pinion meshing with a ring gear equipping the periphery of the plate 6.
  • This motor-encoder allows a reading at any time of the angular position of the plate 6 corresponding to an angular position TETA of the probe 8.
  • the arcuate light 7 has a length approximately corresponding to the radius of the turntable 6 and extends between the center of the turntable 6 and its periphery.
  • the circular arc described by the light 7 is centered around a carrier axis A.
  • the turntable 6 can be extracted from the frame 5. It is then as shown on the figures 2 and 3 .
  • the perspective view of the figure 2 shows a groove 14 disposed on the edge of the turntable 6, over its entire circumference. This groove 14 cooperates with the guide rollers of the plate.
  • the turntable 6 carries a reading subassembly 15.
  • the figures 2 and 3 allow to see the reading subset 15 according to two different angles of view.
  • the reading subassembly 15 comprises a bearing 16 on which is mounted a carrier shaft 17 rotatably mounted on the turntable 6. This carrier shaft 17 has as axis the carrier axis A.
  • a carrier arm 18 is mounted on the carrier shaft 17.
  • the carrier arm 18 has at one of its ends a ring 20 allowing the carrier arm 18 to rotate about the carrier axis A and a translational movement along that axis.
  • the support arm 18 comprises a cylindrical support 21 on which is fixed the support rod 8A of the probe 8 so that the axis of this support rod 8A remains parallel to the carrier axis A .
  • This assembly allows the probe 8 to present a movement in an arc along the light 7, in a plane orthogonal to the axis of rotation B of the turntable 6, this axis of rotation B being here parallel to the axis A
  • the probe 8 can perform an input / output movement with respect to the front face of the turntable 6, when the carrier arm 18 slides along the axis A.
  • the feeler 8 is provided with three degrees of freedom, including a first degree of freedom TETA consisting of the ability of the feeler 8 to rotate about the axis of rotation B through the rotation of the turntable 6, a second degree of freedom Z constituted by the ability of the probe 8 to translate along an axis parallel to the axis of rotation B by sliding the support arm 18 along the axis A, and a third degree of freedom R constituted by the ability of the feeler 8 to move relative to the axis of rotation B thanks to its freedom of movement along the arc formed by the light 7.
  • a first degree of freedom TETA consisting of the ability of the feeler 8 to rotate about the axis of rotation B through the rotation of the turntable 6
  • a second degree of freedom Z constituted by the ability of the probe 8 to translate along an axis parallel to the axis of rotation B by sliding the support arm 18 along the axis A
  • a third degree of freedom R constituted by the ability of the feeler 8 to move relative to the axis of rotation B thanks to
  • Each point read by the end of the probe 8 is located in a corresponding coordinate system R, TETA, Z.
  • the probe 8 thus has a decomposable speed in three distinct components, a first component called rotation speed VP corresponding to the speed of rotation of the turntable 6, a second component called radial velocity VR corresponding to the transverse component of the speed of the probe 8 along an axis perpendicular to the axis of rotation B and passing through the end of the probe 8, and a third component called axial speed VZ corresponding to the axial component of the speed of the probe 8 along the axis of rotation B.
  • rotation speed VP corresponding to the speed of rotation of the turntable 6
  • VR radial velocity
  • VZ axial speed
  • the reading subassembly 15 also comprises a guide arm 22 attached to the base of the shaft 17.
  • This guide arm 22 has a length sufficient to reach the light 7.
  • the guide arm 22 comprises a semicircular portion toothed 26 centered on the carrier axis A.
  • the teeth of the semicircular portion 26 mesh with an intermediate gear 27 which itself meshes with the pinion (not visible) of a motor-encoder 28 mounted on a yoke 29 which is fixed on the turntable 6.
  • the teeth of the intermediate gear 27 have not been shown to make the drawings clearer.
  • the guide arm 22 comprises a vertical clevis 30, arranged parallel to the bearing axis A, on which is fixed a motor-encoder 31 whose pinion 32 meshes with a rack 33 fixed on the ring 20 of the carrier arm 18.
  • the rack 33 is arranged parallel to the carrier axis A.
  • the teeth of the pinion 32 have not been represented for the same reasons of clarity as before.
  • the encoder motor 28 is therefore able to rotate the feeler 8 about the carrier axis A. It therefore allows the probe 8 to exert a force along an axis of effort E tangent to the arc described by the light 7.
  • the motor-encoder 31 is itself able to move the probe 8 along an axis parallel to the carrier axis A. In particular, it makes it possible to exert a so-called mass compensation torque Cz which cancels the mass of the probe 8 and the carrier arm 18 seen by the bezel 10A of the frame 10 when the bezel and the probe are in contact with each other.
  • the contour reading apparatus 1 further comprises means 101 for determining the position R, TETA, Z of the end of the feeler finger 8B of the feeler 8 and of its speed, in particular of its axial and radial components VZ VR.
  • It also comprises dynamic control means 102, that is to say in real time, the speed of the probe 8.
  • dynamic control means 102 that is to say in real time, the speed of the probe 8.
  • the rotational speed VP of the turntable 6 is controlled.
  • All of these determination means 101 and control 102 is integrated in an electronic device and / or computer 100 allowing, on the one hand, to actuate the encoder motors 28, 31, and on the other hand, recovering and recording the data transmitted by these encoder motors 28, 31. These data are here transmitted in the form of voltage slots sent by the encoder motors 28, 31 when they pivot.
  • the figure 4 represents the upper end of the probe 8 comprising the feeler finger 8B.
  • This feeler finger 8B points along an axis perpendicular to the axis of the support rod 8A. It has a pointed end intended to fit into the bezel 10A of a circle of the frame 10 to raise the geometry of its outline.
  • each point of the contour of the bezel 10A can be defined by three spatial coordinates corresponding to the coordinates R, TETA, Z of the end of the probe 8.
  • a point of the mount is therefore identified by its radial coordinate R separating this point from the center of the turntable 6, its angular position TETA relative to, for example, the angular position of the first point palpated, and its altitude Z.
  • the camber of a frame can be quantified using a curve angle J.
  • This curve angle J corresponds to the angle formed between the general plane K of the circles of the frame 10 (vertical plane passing through the bridge) nasal connecting the two circles of the frame) and the axis L defined as being the axis passing through two distinct points of the bezel 10A (typically one located near the nasal part of the circle and the other near the part temporal circle) and having the greatest inclination relative to the general plane K of the circles of the frame 10.
  • This type of strongly arched frames 10 generally also has a twisting of the bezel 10A commonly called "pouring".
  • each of the points P1, P2, P3, P4, P5, P6, P7, P8 has an altitude Z respectively denoted Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z8 represented on FIG. figure 6 .
  • a standard caliber of shape is used any.
  • 800 separate points are used.
  • the coordinates of these measurement points are preferably stored in memory in the contour reading apparatus 1. If several calibres are used, these calibers are numbered, and these numbers are stored in memory in the apparatus, in order to avoid associating a set of measurement points with a gauge does not correspond to it.
  • Such a three-dimensional machine may for example be constituted by a contour reading device of the same type as that described here and shown on the Figures 1 to 3 but suitably calibrated and / or made with a structure and / or mechanical components of higher precision.
  • the caliber has a geometry such that, when probing in the three-dimensional machine, the measured radius and height vary in large proportions, ideally throughout the measurement range of the contour reading apparatus.
  • the template may have a shape in two dimensions (for example an ellipse) in a plane inclined by twenty degrees relative to the horizontal.
  • the measuring points MRi (XRi, YRi, ZRi) are given in a coordinate system whose X axis is the horizontal axis passing through the center of the two jaws of the three-dimensional machine, of which the Y axis is the horizontal axis perpendicular to the X axis, whose Z axis is the vertical axis perpendicular to the X and Y axes and whose origin O is located at the center of the segment connecting the centers of the two upper jaws.
  • the difference along the X axis between a point measured on the contour reading apparatus 1 and this same point measured on the three-dimensional machine is defined by dXO.
  • the distance along the Y axis between a point measured on the contour reading apparatus 1 and this same point measured on the three-dimensional machine is defined by dYO.
  • the difference along the Z axis between a point measured on the contour reading apparatus 1 and this same point measured on the three-dimensional machine is defined by dZO.
  • Calibration is then performed according to the following steps.
  • the 800 measurement points of the calibration caliber are acquired and recovered using the three-dimensional machine.
  • the standard gauge is read by means of the contour reading device 1.
  • the parameters TETA0, PCX, R0, PPY, PPX, dAB, LBille, dXO, dYO and dZO are then searched which make it possible to minimize the difference between the two sets of points MLi and MRi.
  • the points MLi are corrected by modifying the values of the parameters chosen, a set of MLCORRi points is deduced therefrom, and the difference between the coordinates of the points MLCORRi and MRi is calculated.
  • this difference between the points MLCORRi and MRi is not negligible (that is to say as long as the differences between their respective coordinates are not all less than predefined threshold values), the parameters are modified again. to reduce this difference.
  • the measured points MLi can be corrected with the optimum parameters obtained TETA0optim, PCXoptim, R0optim, PPYoptim, PPXoptim, and Aboptim. LBilleoptim.
  • this frame 10 is inserted between the pads 4 of the jaws 3 so that each of the circles of the frame 10 is ready to be palpated along a path starting by the insertion of the probe between two studs 4 corresponding to the lower part of the frame 10, then following the bezel 10A of the frame 10, to cover the entire circumference of the circle of the frame 10.
  • the electronic and / or computer device 100 calibrates the mass compensation torque Cz so that the probe 8 is at equilibrium irrespective of its altitude Z with respect to the turntable 6.
  • the probe 8 is first inserted in the right circle of the mount 10.
  • the plate 5 on which the turntable 6 is mounted moves with the aid of a motor and a link rack (not shown) so that the center of the turntable 6 is disposed between the two pairs of studs 4 of the two jaws 3 fixing the right circle of the frame 10.
  • the feeler finger 8B is then automatically placed at a known altitude Z and corresponding to the altitude of the point situated at half height between two studs 4 for fixing the frame 10.
  • the reading subassembly 15 has an on-board mechanism allowing movement of the feeler 8 parallel to the axis A.
  • This mechanism comprises the encoder motor 31 which is adapted to arrange the ring 20, and consequently the carrier arm 18, at the desired height on the shaft 17.
  • the probe 8 can thus have a vertical movement along the axis Z '.
  • the feeler finger 8B then moves in the plane of attachment of the frames 10 towards a point located between the two studs 4 for fixing the frame 10 on its lower part.
  • a joint movement of rotation about the axis A of the guide arm 22 and the support arm 18 allows the guide arm 22, driven by the motor-encoder 28, to drive itself the feeler 8 in rotation around the axis A, along the light 7.
  • the turntable 6 defines as zero the angular position TETA and the altitude Z of the end of the 8.
  • the guide rollers of the turntable 6 are then able to rotate the reading subassembly 15 relative to the fixed frame 5, the reading subassembly 15 being embarked on the turntable 6.
  • the motor- encoder (not shown) which drives the rollers inserted in the groove 14 not only causes rotation of the turntable 6 but also allows the electronic and / or computer device 100 to know the value of the angular position TETA (in degrees) that the feeler 8 from its initial position.
  • the value of the angular position TETA of the probe 8 increases at a nominal speed V0.
  • This nominal speed V0 here is 2.8 hundredths of a degree per millisecond.
  • the probe 8 moves along the bottom of the bezel 10A and is guided according to its radial coordinate R and according to its altitude Z by this bezel 10A.
  • the probe being inserted into the right circle of the frame 10, the probe 8 moves in the trigonometrical direction.
  • the encoder motor 28 thus drives the turntable and also acts as an encoder to identify the successive positions of the carrier arm 18 along the light 7.
  • the encoder motor 28 thus delivers a signal enabling the determination means 101 of the electronic and / or computer device 100 to know at all times the radial coordinate R of the feeler finger 8B with respect to the axis of rotation B of the turntable 6.
  • the motor-encoder 31 exerts a so-called mass compensation torque Cz intended to at least artificially cancel the weight of the assembly formed by the support arm 18 and the probe 8.
  • the encoder motor 31 also operates simultaneously in the same manner. encoder which allows the determination means 101 of the electronic device and / or computer 100 to know the altitude Z of the probe finger 8B of the probe 8. The variation of this altitude Z (in millimeters) as a function of the angular position TETA ( in degree) of the probe 8 is represented on the graph of the figure 6 . This graph highlights in particular the significant height of the nasal and temporal parts of the frame 10.
  • the electronic and / or computer device 100 can then possibly determine the coordinates of the feeler finger 8B in a fixed reference frame attached to the frame 5. It can thus store a digital image contours of the two bezels 10A circles of the frame in the same frame.
  • the set of encoder motors 28, 31 allows the electronic and / or computer device 100 to determine the spatial coordinates R, TETA, Z of the point palpated by the probe 8 and consequently the spatial coordinates of a set of points characterizing the outline of the bottom of the bezel when the probe 8 has accurately palpated the entire contour of the bezel 10A.
  • the electronic and / or computer device 100 notes in particular the values of the radial coordinates R of the probed points in order to determine, with the aid of a suitable derivation software, the instantaneous radial velocity V R of probe 8 (corresponding to the transverse component of the speed of the probe 8).
  • the evolution of this radial velocity VR (in hundredths of millimeters per millisecond) as a function of the angular position TETA of the turntable 6 (in degrees) is represented on the graph of the figure 7 for a rotation speed VP of the turntable 6 constant and equal to its nominal speed V0.
  • the radial velocities VR of the probe 8 denoted VR1, VR2, VR3, VR4, VR5, VR6, VR7, VR8 respectively taken at points P1, P2, P3, P4, P5, P6, P7, P8 are represented.
  • the electronic and / or computer device 100 also records the values of the elevations Z of the probed points in order to determine, using the derivation software, the instantaneous axial speed VZ of the probe 8 (corresponding to the axial component of the speed of the probe 8 ).
  • the evolution of this axial speed (in hundredths of millimeters per millisecond) according to the angular position of the turntable 6 (in degrees) is shown on the graph of the figure 8 for a rotation speed VP of the turntable 6 constant and equal to its nominal speed V0.
  • VZ1, VZ2, VZ3, VZ4, VZ5, VZ6, VZ7, VZ8 taken respectively at the points P1, P2, P3, P4, P5, P6, P7, P8.
  • the rotational speed VP of the turntable 6 is dynamically controlled to vary during reading as a function of the axial speed VZ and the radial speed VR of the probe 8.
  • the radial velocity VR of the probe 8 and the variation speed of the radial coordinate R of the probed point as a function of the angular position TETA of the turntable 6 are two identical quantities.
  • the TETA angular position of the turntable 6 is a function of time
  • the radial velocity VR is mathematically related to the speed of variation of the radial coordinate R of the probed point as a function of the TETA angular position of the turntable 6.
  • the axial velocity VZ of the probe 8 and the velocity variation of the altitude Z of the probed point as a function of the angular position TETA of the turntable 6 are two identical quantities. It is therefore possible to control the rotational speed VP of the turntable 6 according to one of these magnitudes.
  • the radial velocity V R and the axial velocity V Z of the probe 8 here and there vary each continuously in a velocity range respectively between -5 and 5 hundredths of a millimeter per millisecond and between -7 and 7 hundredths of a millimeter. millisecond.
  • these two velocity domains are divided into three intervals.
  • the measured values of radial velocity VR and axial VZ probe 8 can be filtered and smoothed by ad hoc software integrated electronic device and / or computer 100 before being compared across the aforementioned intervals.
  • the rotation speed VP of the probe 8 is not limited to three programmed speeds step-by-step, but that it can to vary continuously according to a preprogrammed function associating with each measured axial speed pair VZ and radial VZ, a rotational speed VP of the turntable 6.
  • the guide rollers of the turntable 6 stop.
  • the bezel 10A of the right circle of the frame 10 then has a contour of known shape.
  • the probe 8 descends along the axis Z 'under the mount 10.
  • the plate then moves transversely along the transfer axis D in order to reach its second position in which the center of the turntable 6 is positioned between the studs 4 of the two clamps 3 enclosing the left circle of the frame 10.
  • the feeler 8 is then placed automatically at the height Z inside the second circle of the frame 10 to be measured, against the bezel of this second circle, between the two studs 4 for fixing the lower part of this circle of the frame 10.
  • the probing of the bezel is then performed in the same manner as before but in the opposite trigonometrical direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Eyeglasses (AREA)

Claims (13)

  1. Ableseverfahren für die Kontur des Frontrings (10A) einer Brilleneinfassung (10) mit einem Schritt der Kontaktherstellung eines Abtasters (8) auf dem Frontring (10A) und einem Schritt des Abtastens des Frontrings (10A) durch Gleiten oder Rollen des Abtasters (8) entlang des Frontrings (10A), wobei die Position (R, TETA, Z) des Abtasters (8) vorgegeben ist und die Geschwindigkeit des Abtasters (8) erste, zweite und dritte Komponenten (VP, VR, VZ) umfasst, dadurch gekennzeichnet, dass die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) dynamisch gesteuert wird, um im Laufe des Ablesens in Abhängigkeit von mindestens der einen oder der anderen der zweiten und dritten Komponente (VR, VZ) der Geschwindigkeit des Abtasters (8) kontinuierlich oder stufenweise zu variieren.
  2. Ableseverfahren für eine Kontur nach vorausgehendem Anspruch, bei dem der Abtaster (8) mit drei Freiheitsgraden (R, TETA, Z) versehen ist, wobei die erste, zweite und dritte Komponente (VP, VR, VZ) der Geschwindigkeit des Abtasters (8) jeweils einem der drei Freiheitsgrade (R, TETA, Z) des Abtasters (8) zugeordnet ist.
  3. Ableseverfahren für eine Kontur nach einem der vorausgehenden Ansprüche, bei dem, während sich der Abtaster (8) zum Gleiten entlang der vollständigen Kontur des Frontrings (10A) der Brilleneinfassung (10) um eine Rotationsachse (B) dreht, die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) aus der Drehgeschwindigkeit (VP) des Abtasters (8) um die Rotationsachse (B) besteht.
  4. Ableseverfahren für eine Kontur nach vorausgehendem Anspruch, bei dem die zweite Komponente der Geschwindigkeit des Abtasters (8) eine transversale Komponente (VR) der Geschwindigkeit des Abtasters (8) der zur Rotationsachse (B) des Abtasters (8) senkrechten Achse darstellt.
  5. Ableseverfahren für eine Kontur nach einem der zwei vorausgehenden Ansprüche, bei dem die dritte Komponente der Geschwindigkeit des Abtasters (8) eine axiale Komponente (VZ) der Geschwindigkeit des Abtasters (8) der zur Rotationsachse (B) des Abtasters (8) parallelen Achse darstellt.
  6. Ableseverfahren für eine Kontur nach einem der vorausgehenden Ansprüche, bei dem die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) kleiner wird, wenn die zweite und/oder dritte Komponente (VR, VZ) der Geschwindigkeit des Abtasters (8) zunimmt.
  7. Ableseverfahren für eine Kontur nach einem der vorausgehenden Ansprüche, bei dem, während die zweite Komponente (VR) und die dritte Komponente (VZ) der Geschwindigkeit des Abtasters (8) beide jeweils in einem in Intervalle unterteilten Geschwindigkeitsbereich kontinuierlich variieren, die Mittel zur Steuerung (102) die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) ändern, wenn die zweite und/oder dritte Komponente (VR, VZ) der Geschwindigkeit des Abtasters (8) das Intervall wechseln.
  8. Ablesegerät für die Kontur (1) des Frontrings (10A) einer Brilleneinfassung (10) mit Haltemitteln (3, 4) für das Brillengestell (10), einem Abtaster (8), Mitteln zur Bestimmung (101) der Position (R, TETA, Z) des Abtasters (8) und Mitteln zum Steuern (102) einer ersten Komponente (VP) der Geschwindigkeit des Abtasters (8), dadurch gekennzeichnet, dass sich die Mittel zur Bestimmung (101) dazu eignen, mindestens die eine oder andere der zweiten und dritten Komponenten (VR, VZ) der Geschwindigkeit des Abtasters (8) zu bestimmen und die Mittel zum Steuern (102) sich dazu eignen, die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) in Abhängigkeit von mindestens der einen oder anderen der zweiten und dritten Komponente (VR, VZ) der Geschwindigkeit des Abtasters (8), die von den Mitteln zur Bestimmung (101) vorgegeben wird, entweder kontinuierlich oder stufenweise dynamisch zu steuern.
  9. Ablesegerät für die Kontur (1) nach vorausgehendem Anspruch, bei dem, während für den Abtaster (8) drei Freiheitsgrade (TETRA, R, Z) vorgesehen sind, ein erster dieser drei Freiheitsgrade (TETA) des Abtasters (8) aus seiner Fähigkeit sich um eine Rotationsachse (B) zu schwenken besteht, ein zweiter der drei Freiheitsgrade (R) des Abtasters (8) aus seiner Fähigkeit sich in Bezug zur Rotationsachse (B) zu bewegen besteht und ein dritter der drei Freiheitsgrade (Z) des Abtasters (8) aus seiner Fähigkeit sich entlang einer zur Rotationsachse (B) parallelen Achse zu verschieben besteht.
  10. Ablesegerät für die Kontur (1) nach vorausgehendem Anspruch, bei dem sich die Mittel zum Steuern (102) dazu eignen, die erste Komponente (VP) der Geschwindigkeit des Abtasters (8) gemäß dem ersten der drei Freiheitsgrade (TETA) des Abtasters (8) zu steuern.
  11. Ablesegerät für die Kontur (1) nach einem der zwei vorausgehenden Ansprüche, bei dem sich die Mittel zur Bestimmung (101) dazu eignen, die zweite Komponente (VR) der Geschwindigkeit des Abtasters (8) gemäß dem zweiten der drei Freiheitsgrade (R) des Abtasters (8) zu bestimmen.
  12. Ablesegerät für die Kontur (1) nach einem der drei vorausgehenden Ansprüche, bei dem sich die Mittel zur Bestimmung (101) dazu eignen, die dritte Komponente (VZ) der Geschwindigkeit des Abtasters (8) gemäß dem dritten der drei Freiheitsgrade (Z) des Abtasters (8) zu bestimmen.
  13. Ablesegerät für die Kontur (1) nach einem der Ansprüche 8 bis 12, das eine in Bezug zu den Befestigungsmitteln (3, 4) der Brillenfassung (10) um die Rotationsachse (B) drehbar montierte Drehplatte (6) umfasst, wobei diese Drehplatte (6) ein Teilsystem zum Ablesen (15) trägt, das zum einen den entsprechend einer zur Rotationsachse (B) parallelen Richtung und zum anderen entsprechend einer zur Rotationsachse (B) transversalen Ebene mobilen Abtaster (8) umfasst, wobei das Teilsystem zum Ablesen (15) zudem eine andere Rotationsachse umfasst, die als Trägerachse (A) bezeichnet wird und zur Oberfläche der Drehplatte (6) transversal ist und einen Trägerarm (18), der an einem seiner Enden um die Trägerachse (A) drehbar montiert ist und auf dem sich am anderen seiner Enden der Abtaster (8) befindet.
EP07731098A 2006-03-17 2007-03-06 Verfahren zur steuerung einer sonde zur rillenmessung bei einem brillengestellrand und entsprechendes messgerät Active EP1996368B9 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0602361A FR2898690B1 (fr) 2006-03-17 2006-03-17 Methode de pilotage de palpeur pour lecture de drageoir de monture de lunettes et appareil de lecture correspondant
PCT/FR2007/000399 WO2007107645A1 (fr) 2006-03-17 2007-03-06 Methode de pilotage de palpeur pour lecture de drageoir de monture de lunettes et appareil de lecture correspondant

Publications (3)

Publication Number Publication Date
EP1996368A1 EP1996368A1 (de) 2008-12-03
EP1996368B1 EP1996368B1 (de) 2012-06-27
EP1996368B9 true EP1996368B9 (de) 2012-10-03

Family

ID=36649865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07731098A Active EP1996368B9 (de) 2006-03-17 2007-03-06 Verfahren zur steuerung einer sonde zur rillenmessung bei einem brillengestellrand und entsprechendes messgerät

Country Status (3)

Country Link
EP (1) EP1996368B9 (de)
FR (1) FR2898690B1 (de)
WO (1) WO2007107645A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015808A1 (de) * 2007-03-30 2008-10-02 Buchmann Deutschland Gmbh Verfahren zum Abtasten der Kontur von Brillenfassungsöffnungen und Verwendung der Vorrichtung zum Abtasten der Kontur von Brillenfassungsöffnungen für das Umfangsschleifen von Brillengläsern
EP2027968B1 (de) 2007-12-28 2010-11-03 Essilor International (Compagnie Generale D'optique) Verfahren zur Bestimmung der Parameter für die Trägerherstellung einer Kontaktlinse
JP5377876B2 (ja) 2008-03-28 2013-12-25 株式会社トプコン 眼鏡枠形状測定装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6243960B1 (en) * 1999-03-16 2001-06-12 National Optronics, Incorporated Tracer, clamp and object engager for holding and tracing a lens mount of an eyeglass frame, a lens, and/or a lens pattern, to reliably detect a shape thereof even when the shape includes high wrap
JP3695988B2 (ja) * 1999-04-30 2005-09-14 株式会社ニデック 眼鏡枠形状測定装置
JP3839185B2 (ja) * 1999-04-30 2006-11-01 株式会社ニデック 眼鏡レンズ加工装置
ES2327891T3 (es) * 1999-04-30 2009-11-05 Nidek Co., Ltd. Soporte de plantilla, dispositivo medidor de forma deseada de lente que comprende este soporte, y un aparato de procesado de lentes de gafas que tiene este dispositivo.
JP4566372B2 (ja) * 2000-07-19 2010-10-20 株式会社トプコン レンズ枠形状測定装置
JP4267228B2 (ja) * 2001-12-03 2009-05-27 株式会社トプコン レンズ枠形状測定装置
FR2870933B1 (fr) * 2004-05-28 2008-03-14 Essilor Int Appareil de lecture de contour comportant un capteur d'effort

Also Published As

Publication number Publication date
FR2898690A1 (fr) 2007-09-21
FR2898690B1 (fr) 2008-05-23
EP1996368A1 (de) 2008-12-03
WO2007107645A1 (fr) 2007-09-27
EP1996368B1 (de) 2012-06-27

Similar Documents

Publication Publication Date Title
EP1952088B1 (de) Verfahren zum scannen der randrillenkontur eines brillenrahmens
EP1919663B1 (de) Tastfingersteuerverfahren zum ablesen der einfassung eines brillengestells
EP1817562B1 (de) Einrichtung zum automatischen messen von kenngrössen einer brillenlinse
EP2786202B1 (de) Process zur vorbereitung einer ophthalmischen linse
WO2008142227A2 (fr) Dispositif et procédé de préparation d'une lentille ophtalmique en vue de son usinage
EP2092268B1 (de) Verfahren zur korrektur der geometrie einer abgetasteten kurve
EP2016365A1 (de) Verfahren zum beschaffen mindestens eines teils der form eines teils eines brillenrahmenkreises
EP2210703B1 (de) Brillenglasbearbeitungsvorrichtung
EP2077927B1 (de) Verfahren zum konturfräsen eines brillenglases
EP1996368B9 (de) Verfahren zur steuerung einer sonde zur rillenmessung bei einem brillengestellrand und entsprechendes messgerät
EP2196845B1 (de) Verfahren zur Vorbereitung einer ophthalmischen Linse zwecks ihres Einbaus in eine gewölbte Brillenfassung
EP2268997B1 (de) Vorrichtung und verfahren zum erfassen der geometrie der glasseinfassung eines brillengestells
FR2894170A1 (fr) Methode d'etalonnage d'une meuleuse
EP3172011B1 (de) Maschine zur erfassung von bildern optischer linsen und verfahren zum besäumen von optischen linsen
EP2160270B1 (de) Verfahren zur automatischen erkennung des materials eines brillengestells, zur auslesung der form des gestells und zur ätzung von linsen für das gestell
FR2893523A1 (fr) Methode d'etalonnage d'une meuleuse et dispositif correspondant
FR2932578A1 (fr) Appareil et procede manuels de lecture de contour de cercle de monture de lunettes et de gabarit de lentille ophtalmique.
FR2893724A1 (en) Ophthalmic lens working e.g. trimming method for mounting lens on frame involves embedding beveling groove with bevel from acquired geometrical coordinates by using relative mobility of lens with respect to finishing stone

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080710

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 20100929

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602007023606

Country of ref document: DE

Effective date: 20120823

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121008

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130328

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007023606

Country of ref document: DE

Effective date: 20130328

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602007023606

Country of ref document: DE

Representative=s name: CORALIS PATENTANWAELTE, FR

Ref country code: DE

Ref legal event code: R081

Ref document number: 602007023606

Country of ref document: DE

Owner name: ESSILOR INTERNATIONAL, FR

Free format text: FORMER OWNER: ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE, CHARENTON, FR

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20180517 AND 20180523

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: ESSILOR INTERNATIONAL, FR

Effective date: 20180601

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230525

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240327

Year of fee payment: 18

Ref country code: GB

Payment date: 20240327

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240325

Year of fee payment: 18