EP1993797B1 - Bohrverfahren für brillenglas zur erzielung der gewünschten form und grösse eines in dieses glas zu bohrenden loches - Google Patents

Bohrverfahren für brillenglas zur erzielung der gewünschten form und grösse eines in dieses glas zu bohrenden loches Download PDF

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Publication number
EP1993797B1
EP1993797B1 EP07731085.2A EP07731085A EP1993797B1 EP 1993797 B1 EP1993797 B1 EP 1993797B1 EP 07731085 A EP07731085 A EP 07731085A EP 1993797 B1 EP1993797 B1 EP 1993797B1
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EP
European Patent Office
Prior art keywords
lens
drill bit
drilling
drill
setpoint
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English (en)
French (fr)
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EP1993797A1 (de
Inventor
Romain Batherosse
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EssilorLuxottica SA
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Essilor International Compagnie Generale dOptique SA
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    • 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
    • B28D1/143—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling lens-drilling machines

Definitions

  • the present invention relates to a method of drilling an ophthalmic lens according to the preamble of claim 1.
  • 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 mount without circle.
  • Drilling can be done on a grinder or on a separate drilling machine. To perform the drilling on a machine incorporating the clipping means, this machine is then provided, in addition to the clipping means, drilling specific means.
  • bypass drilling To make holes of different sizes and / or different shapes with the same drill, it implements a particular drilling method called bypass drilling.
  • a piercing method according to the preamble of claim 1.
  • Bypass drilling is performed as follows. After memorizing the desired shape and size of the drilling hole to be made and the position of this hole on the surface of the lens, the drill bit is positioned opposite the stored position of the hole to be drilled. The lens is then pierced by means of a relative advance movement of the drill bit relative to the lens along the axis of rotation of the drill. Then, the drill, engaged in the lens, is moved transversely, that is to say substantially in the plane of the lens, in the manner of a mill in a substantially circular movement.
  • This transverse displacement of the drill is controlled according to piloting instructions corresponding to the desired shape and size stored. However, it is observed that the hole obtained is often smaller in diameter than that desired and stored.
  • the object of the invention is to limit the difference between the dimension obtained and the desired size of the drilling hole.
  • the drill is moved transversely with respect to its mobility in advance and it is the lateral portion of the drill that mills the lens in the manner of a milling cutter. It follows that cutting forces are exerted on the drill transversely to its axis, so that the drill then bends under the effect of these transverse cutting forces, which prevents it from reaching the dimensions of the outline of the drill. hole corresponding to the driving instruction.
  • control setpoint is corrected. according to parameters that influence the observed size difference, to compensate for this difference.
  • the desired size and shape of the hole is then obtained.
  • the material of the lens is one of the parameters on which the dimension dimension difference observed depends. The harder the material of the lens at the point of drilling, the more the drill flexes and the greater the difference in dimension.
  • the setpoint correction corresponding to an enlargement of the size of the hole as a function of at least one of the parameters on which the dimension dimension difference observed depends, allows the drill which bends to reach the dimension of the contour of the desired hole.
  • the widening of the desired size of the hole is adapted according to a method taking into account at least one of the mechanical and / or geometric characteristics of the lens and / or drill bit so that the lower dimension reached by the drill is the dimension of the hole outline to the desired size.
  • control set of the transverse displacement of the drill bit is corrected according to a mechanical and / or geometric characteristic of the lens, for example as a function of at least the thickness of the lens .
  • the thickness of the lens is one of the parameters on which the dimension dimension difference observed depends. Indeed, the greater the thickness of the lens at the piercing point, the more the drill bends and the more the difference in dimension is important.
  • control set of the transverse displacement of the drill bit is corrected according to at least one mechanical and / or geometric characteristic of the drill bit.
  • the mechanical characteristics of the drill bit are also part of the parameters on which the dimension dimension difference observed depends. In fact, the smaller the diameter of the drill bit, and / or the less hard the drill material, the greater the difference in dimension.
  • control setpoint for the transverse displacement of the drill bit is corrected according to the advance and / or the depth of the milling pass.
  • the correction of the steering setpoint for the transverse displacement of the drill bit is obtained by means of curves or reference charts.
  • the milling step comprises one or more uncorrected milling passes subsequent to the corrected milling pass and for which the control instruction for the transverse displacement of the drill bit corresponds directly to the shape and the desired size of the drilling hole.
  • This uncorrected milling pass results in a more accurate hole size and shape in the event that the rating obtained after the setpoint correction is still lower than the desired dimension.
  • the invention also relates to a method of drilling a lens according to claim 8.
  • the control setpoint correction is thus made from the measurement of the component of a force that the drill undergoes.
  • the value of this component of the force experienced by the drill is relative to the bending force experienced by the drill when it mills the lens being moved transversely and thus is also relative to the observed difference in dimension.
  • the correction of the driving instruction for the transverse displacement of the drill bit is at least partially defined starting from the acquisition of a quantity directly or indirectly representative of at least one transverse component of the effort that the drill undergoes during milling.
  • the correction of the control setpoint is predefined during a milling pass prior to said corrected pass.
  • a quantity representative of at least one transverse component of the force experienced by the drill during the milling is acquired, which makes it possible to define the correction of the control setpoint of the corrected milling pass.
  • control setpoint is dynamically performed during said corrected milling pass.
  • the correction of the setpoint can thus be adapted during the corrected milling pass as a function of the transverse component that the drill undergoes to reach as precisely as possible the desired dimension at each point of the contour of the hole to be made.
  • the correction of the steering setpoint of the transverse displacement of the drill is at least partly predefined from the acquisition of a quantity directly or indirectly representative of at least one axial component of the effort that the drill undergoes during drilling.
  • FIG. 4 To the figure 4 there is shown a trimming and drilling device 6 equipped with a drilling module 625.
  • the trimming function of the trimming and drilling device 6 can be performed in the form of any cutting or material removal machine adapted to modify the contour of the ophthalmic lens to match that of the frame or "circle" of a selected mount.
  • a machine may consist for example of a grinder, a laser cutting machine or jet water, etc.
  • the shaping device comprises, in a manner known per se, an automatic grinder 610, commonly called digital.
  • This grinder comprises, in this case, a flip-flop 611, which is freely pivotally mounted about a first axis A1, in practice a horizontal axis, on a frame.
  • the grinder is equipped with support means able to clamp and rotate an ophthalmic lens.
  • These support means comprise two shafts and rotation drive 612, 613. These two shafts 612, 613 are aligned with each other along a second axis A2, called locking pin, parallel to the first axis A1.
  • the two shafts 612, 613 are rotated synchronously by a motor (not shown), via a common drive mechanism (not shown) embedded on the flip-flop 611.
  • This common synchronous rotation drive mechanism is of type current, known in itself.
  • the ROT rotation of the shafts 612, 613 is driven by a central electronic and computer system (not shown) such as an integrated microcomputer or a set of dedicated integrated circuits.
  • Each of the shafts 612, 613 has a free end which faces the other and is equipped with a locking nose (not shown). These locking noses are not always fixed on the shafts 612, 613. They are in fact previously used by gripping means (not shown) to lock the lens before being transferred to the present clipping and drilling device 6 by staying in contact with the transferred lens.
  • the shaft 613 is movable in translation along the blocking axis A2, facing the other shaft 612, to effect the compression in axial compression of the lens between the two locking noses.
  • the shaft 613 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 612 is fixed in translation along the blocking axis A2.
  • the trimming and drilling device 6 comprises, on the other hand, a machining drill, here a train of at least one grinding wheel 614, which is wedged in rotation on a third axis A3 parallel to the first axis A1, and which is also properly rotated by a motor not shown.
  • a machining drill here a train of at least one grinding wheel 614, which is wedged in rotation on a third axis A3 parallel to the first axis A1, and which is also properly rotated by a motor not shown.
  • the grinder 610 comprises a train of several grinding wheels 614 mounted coaxially on the third axis A3, for a roughing and finish of the edging of the ophthalmic lens 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 shown, is rotated by an electric motor 620 driven by the electronic and computer system.
  • the wheel train 614 is also movable in translation along the axis A3 and is controlled in this translation by a drive motor.
  • a drive motor Concretely, the entire wheel train 614, its shaft and its motor is carried by a carriage 621 which is itself mounted on slides 622 secured to the frame for sliding along the third axis A3.
  • the translational movement of the wheel trolley 621 is called “transfer” and is noted TRA on the figure 3 .
  • 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 611 about the axis A1 is used.
  • This pivoting causes indeed a displacement, here substantially vertical, of the lens sandwiched between the shafts 612, 613 which brings the lens closer or away from the grinding wheels 614.
  • This mobility which makes it possible to restore the shape of the desired and programmed edging in an electronic system. and computer science, 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 illustrated by the figure 4 further comprises a finishing module 625 which embeds chamfering and grooving grinders 630, 631 mounted on a common axis 632 and which is movable with a degree of mobility, in a direction substantially transverse to the axis A2 of the shafts 612, 613 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 625 around the axis A3.
  • the module 625 is carried by a lever 626 integral with a tubular sleeve 627 mounted on the carriage 621 to rotate about the axis A3.
  • the sleeve 627 is provided, at its end opposite the lever 626, a toothed wheel 628 which meshes with a pinion (not visible in the figures) fitted to the shaft of an electric motor 629 integral with the trolley 621.
  • the module 625 is provided with a drill 635 whose spindle is equipped with a drill attachment mandrel 637 along a drilling axis A6 (see figure 5 ).
  • the drill 635 is mounted on the module 625 so as to pivot about an axis of orientation A7 substantially transverse to the axis A3 of the grinding wheels 614 as well as to the axis A5 of restitution and, consequently, substantially parallel to the direction of rotation. ESC retraction of the module 625.
  • 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 635 is noted PIV on the figure 4 . This is the only degree of mobility dedicated to drilling.
  • the integration of the drilling function within an edging machine implies that the drill is properly positioned opposite the position of the hole to be drilled on the lens. 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 adjust the orientation of the drilling axis A6 of drill 635.
  • the body 634 of the drill 635 has a cylindrical shaft A7 sleeve which is pivotally received in a corresponding bore of the same axis A7 formed in the body of the module 625.
  • the drill 635 can thus pivoting about the axis of orientation A7 over a range of angular positions corresponding to the same inclination of the drilling axis A6 with respect to the lens to be pierced when the module 625 will come into the drilling position.
  • This range of angular positions is physically delimited by two angular stops integral with the body of the module 625.
  • the adjustment means of the orientation comprise, on the one hand, a finger 638 secured to the body 634 of the drill 635 and provided with a spherical end 639 and, on the other hand, a plate 650 carrying a cam path 651 and integral with the frame 601 of the grinder.
  • the plate 650 has a plane useful face 658 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 858 of the plate 650 is vertical. When the module 625 is in its angular range of adjustment, the useful face 658 of the plate 650 is located opposite the end 639 of the finger 638 of the drill 635.
  • the cam path of the plate 650 is constituted by a trench 651 formed in recess of the useful face 658 of the plate 650.
  • the trimming and drilling device finally comprises means for memorizing the desired shape and size of a drilling hole 700 of the lens, also called the hole to be drilled, and the position of this hole on the surface of the hole. lens.
  • These storage means may consist of a rewritable memory and an interface (for example a keyboard and a screen) for writing in this memory.
  • the desired shape and size of the drilling hole 700 to be made in the lens as well as the position of this drilling hole on the surface of the lens are stored by the storage means of the clipping device and drilling.
  • the electronic processing system 100 manages, in appropriate coordination, the transfer mobilities TRA of the finishing module 625 carrying the drilling, restitution module RES of the clamping and rotation shafts 612, 613, of retraction.
  • ESC of the finisher 625 and optionally rotation ROT of the lens to obtain the relative mobilities of the drill relative to the lens necessary for the realization of the drilling hole.
  • These relative mobilities comprise a relative advance mobility of the drill bit relative to the lens along the axis of rotation of the drill and a mobility of transverse displacement of the drill bit relative to its drilling axis.
  • the relative advance mobility of the drill bit relative to the lens can be obtained by a mobility composed for example from the retraction mobility ESC of the finishing module 625 and the transfer mobility TRA of the module
  • the relative advance mobility of the drill bit relative to the lens can be achieved by means of additional simple mobility by moving the drill bit along its drilling axis relative to the drilling module. finish 625.
  • the lens is drilled by means of the drill bit at a point of origin PO, also called the starting point of drilling.
  • the position of this point of origin PO is chosen substantially in the center of the hole. In the case of an oblong hole this point of origin is chosen to be the center of one of the two semicircles defining the oblong hole.
  • the drilling drill is positioned opposite the original position of the hole 700 to be drilled and the orientation of the drill 637 is adjusted by coordinating control. appropriate transfer mobilities TRA, RES restitution and rotation ROT so that the drilling axis A6 is substantially coincident with the normal to the lens at the point of origin PO considered. After properly orienting the drill, it begins drilling at this point of origin PO. The drill is then rotated and moved in translation along the axis of drilling A7, that is to say according to its mobility in advance, to the point of origin PO until piercing the lens.
  • bypass drilling Since the hole 700 to be drilled is of diameter greater than the diameter of the drill and / or of non-circular shape, a special drilling method, called bypass drilling, is used. According to this method, the drill 637, engaged in the lens, is moved transversely with respect to the drilling axis A6. The drill 637 is thus used in the manner of a milling cutter being moved in a substantially circular manner to remove a given depth of material, until reaching the desired dimension at any point in the contour of the hole 700 to be drilled.
  • the depth of material removed corresponds to the radius of material removed following a movement of the drill substantially circular in the plane transverse to its piercing axis, that is to say substantially in the plane tangent to the lens passing through the point original PO.
  • the hole 700 to be drilled is an oblong hole.
  • the movement of the drill is controlled along a spiral path as represented by the arrows of movement of the drill on the figure 1 .
  • the displacement of the drill 637 along this spiral path firstly comprises an initial milling pass 701 in which the drill is moved rectilinearly along the length L0 of the hole 700 to be made.
  • This initial milling pass 701 is made of "full material", that is to say that the depth of material removed is equal to the diameter of the drill.
  • the transverse displacement of the drill is controlled to perform several milling passes 701, 702, 703 along a path whose shape corresponds to the shape of the desired hole but of smaller size.
  • the trajectory of the drill while keeping the same shape, is enlarged.
  • the paths of these milling passes thus form a spiral.
  • the drill is near the desired contour of the hole to be made.
  • the drill is then driven to perform a milling pass following a control setpoint that corresponds directly to the desired shape and size of the drilling hole.
  • a graph has been plotted on which is reported the diameter Dm of a drilled hole resulting from a control setpoint corresponding to a desired diameter Dms as a function of the thickness Ep of the lens at the piercing point, in the absence of any control setpoint correction.
  • the greater the thickness Ep of the lens at the point of drilling the greater the difference between the obtained diameter Dm of the drilled hole and the desired diameter Dms of the hole is important.
  • the greater the thickness Ep of the lens at the point of drilling the greater the diameter Dm of the hole obtained decreases relative to the desired diameter Dms of this hole. Beyond a certain thickness, the value of the diameter obtained from the hole out of the IT tolerance range set.
  • This correction method makes it possible to obtain the desired shape and size of the hole to be drilled according to a bypass or milling method, as presented above.
  • a setpoint correction is made for controlling the transverse displacement of the drill as a function of the thickness at the piercing point of the lens.
  • the distribution of points on the figure 2 giving the obtained diameter Dm of the hole as a function of the thickness Ep of the lens at the piercing point, makes it possible to determine a correction function giving the control setpoint correction to be applied to the transverse displacement of the drill according to the thickness of the lens at the piercing point to obtain the desired diameter Dms of the hole.
  • the correction of the steering setpoint of the transverse displacement of the drill bit 637 consists in an enlargement of the size of the hole to be made according to a method taking into account the thickness of the lens.
  • this control setpoint correction consists in increasing the depth of pass so as to compensate for the difference observed between the dimension obtained and the desired size of the hole.
  • this correction function is substantially linear.
  • a corrected milling pass is carried out for which the instruction The steering of the transverse displacement of the drill bit is corrected according to the correction function mentioned above, that is to say here depending on the thickness of the lens.
  • the value of the diameter obtained is within the given tolerance interval, as represented on the graph of the figure 3 .
  • the correction of the control setpoint of the transverse displacement of the drill bit can thus be obtained by means of reference curves giving the obtained diameter of the hole as a function of a parameter such as the thickness of the lens at the piercing point. It is also possible to make abacuses giving directly the correction of the control setpoint to be applied.
  • a setpoint correction is made for controlling the transverse displacement of the drill as a function of the material of the lens. For this, a curve similar to that of the first embodiment is produced, but this time not according to the thickness, but as a function of the material of the lens and for a determined thickness.
  • a control setpoint correction is performed as a function of the thickness of the lens at the piercing point and as a function of the material of the lens.
  • a control setpoint correction is performed as a function of the thickness of the lens at the piercing point and as a function of the material of the lens.
  • curves giving the difference between the diameter obtained and the desired diameter as a function of the thickness (as for the curve shown on FIG. figure 1 ).
  • Each of these curves corresponds to a correction function as described above. It is then sufficient to apply to the milling control instructions, the correction function, interpolated or not, corresponding to the material of the lens to be drilled and the thickness at the piercing point considered.
  • a milling control setpoint correction is made according to the mechanical characteristics of the drill bit. These mechanical characteristics can be the diameter and / or the material of the drill bit, or else other mechanical characteristics:
  • the correction function is obtained in a manner similar to the previous embodiments, from one or more curves. giving the diameter of the hole obtained according to one or more mechanical characteristics of the drill.
  • this third embodiment can be combined with one of the previous modes of execution.
  • the target correction is then performed both as a function of the thickness at the piercing point of the lens, as a function of the material of the lens and as a function of mechanical characteristics of the drill.
  • the correction of the control setpoint for the transverse displacement of the drill bit to be performed dynamically during milling by means of the acquisition of at least one component.
  • the milling force by a suitable force sensor.
  • This milling effort allows from a mathematical formula, which can be obtained or not empirically, to deduce one or more parameters on which depends the correction function, such as the thickness and / or the material of the lens, and / or the mechanical characteristics of the drill.
  • the steering setpoint is then corrected, taking into account the parameter or parameters deduced.
  • the correction of the driving instruction for the transverse displacement of the drill bit can also be at least partially defined from the acquisition of at least one component.
  • the drilling effort (at the point of origin) by a suitable force sensor.
  • this drilling effort makes it possible, from a mathematical formula, obtained or not empirically, to deduce from it one or more parameters on which the correction function depends, and thus to correct the driving instruction.
  • the depth of material removed by the drill during the milling passes can be modified by adapting the control setpoint according to the material of the machined lens and / or the thickness of the milled lens portion, and / or the mechanical characteristics of the drill bit , and / or the advance of the drill.
  • the greater the thickness, and / or the material hardness of the lens the greater the correction made.
  • the lower the mechanical characteristics of the drill that is, the greater the deflection of the drill (resulting from a bending force on the drill), the greater the correction. deposit is important.
  • the greater the advance of the drill the greater the correction made to the driving instruction.
  • the steering setpoint for the transverse displacement of the drill bit is corrected as a function of a magnitude representative of at least one transverse component of the force experienced by said drill. drill when milling the lens.
  • This measured quantity can be directly the transversal component of the effort that the forest undergoes.
  • the magnitude measured may also be the intensity of the current in the motor whose value varies as a function of the transverse force to which the drill is subjected. It is also possible to measure the variations in the advance of the drill in the case of the application of a predefined torque force and to deduce the transverse component of the force experienced by the drill.
  • the deduction of the transverse component of the force experienced by the drill can be made from curves or reference charts obtained for example empirically.
  • the control setpoint correction is then determined from this transverse component (for example by means of curves or reference charts).
  • the correction of the control setpoint is predefined during a milling pass prior to said corrected pass. It is also possible, for greater precision, to determine the driving instruction dynamically during said corrected milling pass.
  • this setpoint correction to be applied corresponds to an enlargement of the size of the hole to compensate for the decrease in size obtained due to the bending forces experienced by the drill.
  • the correction of the steering setpoint of the transverse displacement of the drill is predefined from the acquisition of a magnitude representative of an axial component of the force experienced by the drill during drilling.
  • this magnitude can be directly the axial component itself or, indirectly, the intensity of the motor and / or the advance of the drill from which one can deduce said axial component of the force experienced by the drill.
  • the deduction of the axial component of the force experienced by the drill can be performed from curves or reference charts obtained for example empirically.
  • the control setpoint correction is then determined from this axial component (for example by means of curves or reference charts). It is thus possible from the piercing step and before the step of milling the lens, to determine the control setpoint to from the axial component of the effort that the drill undergoes during drilling.
  • the drill is moved empty, that is to say without removal of material, to the point of origin so as to achieve a closed trajectory.
  • the drill has a diameter of between 0.8 mm and 1mm.
  • this drill can be replaced by a bur.
  • the milling step consists of making passes along a path close to the desired shape of the hole, increasing during the passes the dimension of the shape defined by the trajectory, following a step depending on the depth of material to be removed at each pass, until reaching the desired size of the hole.

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  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Claims (12)

  1. Bohrverfahren für ein Brillenglas mit folgenden sukzessiven Schritten:
    - Speichern der gewünschten Form und Dimension eines Bohrloches (700) im Brillenglas und der Position dieses Loches (700) auf der Oberfläche des Glases,
    - Positionieren eines Bohrers (637) gegenüber der gespeicherten Position des zu bohrenden Loches (700),
    - Durchbohren des Brillenglases durch eine relative Vorschubbewegung, die einfach oder zusammengesetzt sein kann, des Bohrers (637) in Bezug zum Glas entlang der Drehachse des Bohrers (637), und dann
    - Fräsen durch eine transversale Bewegung des in das Brillenglas eingreifenden Bohrers (637) gemäß einer Steuervorgabe für die transversale Bewegung, die von der gewünschten Form und Dimension des Bohrloches (700) abhängt,
    dadurch gekennzeichnet, dass der Schritt des Fräsens mindestens einen korrigierten Fräsdurchgang umfasst, für den die Steuervorgabe für die transversale Bewegung des Bohrers (637) korrigiert wird, wobei die Korrektur der Steuervorgabe für die transversale Bewegung des Bohrers (637) in einer Vergrößerung der gewünschten Dimension des Loches (700) besteht, die mindestens vom Werkstoff des Glases abhängt, um die Biegung des Bohrers auszugleichen.
  2. Bohrverfahren nach vorausgehendem Anspruch, bei dem man die Steuervorgabe für die transversale Bewegung des Bohrers (637) in Abhängigkeit eines mechanischen und/oder geometrischen Merkmals des Brillenglases korrigiert.
  3. Bohrverfahren nach vorausgehendem Anspruch, bei dem man die Steuervorgabe für die transversale Bewegung des Bohrers (637) mindestens in Abhängigkeit der Dicke des Brillenglases korrigiert.
  4. Bohrverfahren nach einem der vorausgehenden Ansprüche, bei dem man die Steuervorgabe für die transversale Bewegung des Bohrers (637) mindestens in Abhängigkeit eines mechanischen und/oder geometrischen Merkmals des Bohrers (637) korrigiert.
  5. Bohrverfahren nach einem der vorausgehenden Ansprüche, bei dem man die Steuervorgabe für die transversale Bewegung des Bohrers (637) in Abhängigkeit des Vorschubs und/oder der Tiefe des Fräsdurchgangs korrigiert.
  6. Bohrverfahren nach einem der vorausgehenden Ansprüche, bei dem die Korrektur der Steuervorgabe für die transversale Bewegung des Bohrers (637) mittels Kurven oder Referenztabellen erreicht wird.
  7. Bohrverfahren nach einem der vorausgehenden Ansprüche, bei dem der Schritt des Fräsens nach dem korrigierten Fräsdurchgang einen oder mehrere nicht korrigierte Fräsdurchgänge umfasst und bei dem die Steuervorgabe für die transversale Bewegung des Bohrers (637) direkt der gewünschten Form und Dimension des Bohrloches (700) entspricht.
  8. Bohrverfahren für ein Brillenglas nach einem der vorausgehenden Ansprüche, bei dem man die Steuervorgabe für die transversale Bewegung des Bohrers (637) in Abhängigkeit einer direkt oder indirekt repräsentativen Größe von mindestens einer transversalen oder axialen Komponente der Belastung, die auf den Bohrer beim Fräsen oder Bohren eines Brillenglases einwirkt, vorab oder dynamisch korrigiert.
  9. Bohrverfahren nach vorausgehendem Anspruch, dadurch gekennzeichnet, dass die Korrektur der Steuervorgabe für die transversale Bewegung des Bohrers (637) mindestens teilweise anhand der Erfassung einer direkt oder indirekt repräsentativen Größe von mindestens einer transversalen Komponente der Belastung, die auf den Bohrer beim Fräsen einwirkt, definiert wird.
  10. Bohrverfahren nach vorausgehendem Anspruch, dadurch gekennzeichnet, dass die Korrektur der Steuervorgabe während eines Fräsdurchgangs vor dem korrigierten Durchgang vordefiniert wird.
  11. Bohrverfahren nach Anspruch 10, dadurch gekennzeichnet, dass die Korrektur der Steuervorgabe während des korrigierten Fräsdurchgangs dynamisch durchgeführt wird.
  12. Bohrverfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Korrektur der Steuervorgabe für die transversale Bewegung des Bohrers (637) mindestens teilweise anhand der Erfassung einer direkt oder indirekt repräsentativen Größe von mindestens einer axialen Komponente der Belastung, die auf den Bohrer beim Bohren einwirkt, vordefiniert wird.
EP07731085.2A 2006-03-15 2007-03-05 Bohrverfahren für brillenglas zur erzielung der gewünschten form und grösse eines in dieses glas zu bohrenden loches Active EP1993797B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0602267A FR2898527B1 (fr) 2006-03-15 2006-03-15 Procede de percage d'une lentille ophtalmique adapte a obtenir la forme et la dimension souhaitees d'un trou a percer dans ladite lentille
PCT/FR2007/000386 WO2007104844A1 (fr) 2006-03-15 2007-03-05 « procede de perçage d'une lentille ophtalmique adapte λ obtenir la forme et la dimension souhaitees d'un trou λ percer dans ladite lentille »

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EP1993797B1 true EP1993797B1 (de) 2014-05-07

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FR3003488B1 (fr) * 2013-03-22 2015-03-27 Essilor Int Procede de percage d'une lentille ophtalmique selon une trajectoire helicoidale ou pseudo-helicoidale et dispositif de percage associe
CN114589758B (zh) * 2022-03-21 2022-10-04 广州市博泰光学科技有限公司 一种电气化头盔镜片钻孔设备及其应用方法

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FR2306790A1 (fr) * 1975-04-10 1976-11-05 Renault Dispositif de positionnement automatique d'outil
GB1510299A (en) * 1975-07-07 1978-05-10 Verkstadstek Ab Method for adaptive control of machining operations
JPH10244440A (ja) * 1997-03-05 1998-09-14 Toshiba Mach Co Ltd 工作機械の主軸端変位補正装置
JP4194192B2 (ja) * 1999-10-07 2008-12-10 株式会社ニデック 玉型形状測定装置
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
DE10312025A1 (de) * 2003-03-18 2004-10-07 Delta-X GmbH Ingenieurgesellschaft Gesellschaft für Strukturanalyse Verfahren zur Kompensation von Fehlern der Positionsregelung einer Maschine, Maschine mit verbesserter Positionsregelung und Kompensationseinrichtung

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EP1993797A1 (de) 2008-11-26
FR2898527A1 (fr) 2007-09-21
FR2898527B1 (fr) 2009-01-16
WO2007104844A1 (fr) 2007-09-20

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