EP2388106B1 - Dispositif d'enlèvement - Google Patents

Dispositif d'enlèvement Download PDF

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Publication number
EP2388106B1
EP2388106B1 EP10163543A EP10163543A EP2388106B1 EP 2388106 B1 EP2388106 B1 EP 2388106B1 EP 10163543 A EP10163543 A EP 10163543A EP 10163543 A EP10163543 A EP 10163543A EP 2388106 B1 EP2388106 B1 EP 2388106B1
Authority
EP
European Patent Office
Prior art keywords
abutment
reference plane
tool
edge
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10163543A
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German (de)
English (en)
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EP2388106A1 (fr
Inventor
Robert Anton Baumgartner
Erwin Rinnerthaler
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Individual
Original Assignee
Individual
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Publication date
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Priority to EP10163543A priority Critical patent/EP2388106B1/fr
Priority to US13/009,401 priority patent/US8550883B2/en
Publication of EP2388106A1 publication Critical patent/EP2388106A1/fr
Application granted granted Critical
Publication of EP2388106B1 publication Critical patent/EP2388106B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • 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
    • B24B9/146—Accessories, e.g. lens mounting devices

Definitions

  • the invention relates to a device for processing a spectacle lens of rimless spectacles, wherein the machining involves the removal of material on the front side of the spectacle lens in the region of joining surfaces to be formed.
  • a method for producing a rimless glasses is known, are glued in the connecting elements of the jaws and the bridge of the glasses with the front sides of the lenses.
  • first two glasses raw glasses are made of a plastic, on the front and back of a coating is applied.
  • the two coated glasses raw glasses are ground in such a way that two lenses are obtained with a desired disc shape.
  • the coating is removed to form joining surfaces, which correspond in shape and dimensions substantially at the connecting elements formed joining surfaces.
  • the fasteners are then bonded to the front of the lenses at the mounting locations. Since the base material is exposed to the spectacle lenses in the area of the joining surfaces, a permanently fixed adhesive bond can be produced between the connecting elements and the spectacle lenses.
  • the known device comprises a mounting plate as well as a holding device for each spectacle lens of the spectacles to be produced, with the aid of which the spectacle lens is fixed to the mounting plate such that its front side faces away from the mounting plate and is exposed.
  • a grinding device comprises a drive unit and a tool carried by the drive unit, which is designed as a face grinder.
  • the grinding apparatus may be driven under control of a program control device over the location where a single joint surface is to be formed, is lowered there until the end face of the low contact forehead grinder is in contact with the spectacle lens, and then locally abrades the coating thereby forming a joining surface on the spectacle lens. It has proven to be difficult, by means of the known device, to form the joint surfaces exactly at the locations predefined for them on the front side of the spectacle lens.
  • the invention has for its object to provide a device for processing a spectacle lens rimless glasses, which makes it possible to form joining surfaces on the lens with high accuracy at predetermined or predetermined locations of the lens.
  • the device to be created should be structurally as simple as possible and allow easy handling and operation.
  • the inventive device has the support surface, the contact surface and the hold-down and the at least one stop edge on. These elements are in the closer defined in claim 1 relationship to the tool and the reference plane swept by him and allow it in cooperation to arrange the lens in such a processing position and hold or clamp that the tool the trainees joining surface exactly to the for the spectacle lens, taking into account its disc shape, forms the predetermined location of the joining surface.
  • FIGS. 1 to 4 and 6 to 8 an embodiment of a rimless glasses explained in the manufacture of which the device according to the invention can be used.
  • FIG. 1 shows two lenses and other elements of rimless glasses when viewed from the front.
  • the eyeglasses comprise a left eyeglass lens 2, a right eyeglass lens 4 and a bridge 6 disposed between the two eyeglass lenses.
  • the terms "left” and “right” refer to the corresponding details of the human head.
  • the left lens 2 is assigned to the left eye and in FIG. 1 shown on the right.
  • Each of the two lenses 2 and 4 has an in FIG. 1 visible front 3, one in FIG. 1 invisible back, which faces the respective eye of the wearer with glasses attached, and a circumferential edge 5, which limits the lens radially outward.
  • the bridge 6 is an elongated element which is arranged between the two lenses 2 and 4 and connects them together, and has at each of its two ends a connecting element 8, which with the in FIG. 1 visible front side 3 of the lens 2 and 4 is glued.
  • the glasses also have a left jaw 10 and a right jaw 11.
  • the jaws are each attached to an edge region of the spectacle lens 2 or 4 facing away from the bridge.
  • each of the two jaws at its front end on a connecting element 12 which is glued to the front side 3 of the spectacle lens 2 and 4 respectively.
  • the cheeks are each with a in FIG. 1 not shown bracket of the glasses hinged.
  • FIG. 2 shows in perspective view when viewed obliquely from above and behind enlarged and partially the left jaw 10 with its connecting element 12.
  • the connecting element 12 of the left jaw has substantially the shape of a cuboid and has on its back a in FIG. 2 visible joining surface 14, which is substantially planar and has the shape of a rectangle, one side of which is rounded, as in FIG. 2 is shown.
  • the joining surface 14 is intended to be glued to a joining surface on the front side 3 of the left-hand lens 2.
  • the connecting element 12 further comprises an adjacently disposed on the joining surface 14, rearwardly extending projection 16 which is intended to abut the edge 5 of the lens.
  • the connecting element 12 passes over into a curved portion 18 of the jaw 10, which connects the connecting element 12 with the hinge, not shown, on which the jaw 10 is connected to the left bracket of the glasses, not shown.
  • FIG. 3 shows the bridge 6 enlarged in perspective view when viewed obliquely from above and behind.
  • the connecting elements 8 of the bridge 6 the above explanation of the connecting element 12 of the jaw 10 applies. Accordingly, each of the two connecting elements 8 of the bridge 6 has the joining surface 14 and the projection 16 arranged adjacently thereto.
  • a strip 20 is formed on this, with the help of the bridge 6 in the FIGS. 1 and 3 not shown web component can be attached, which serves to support the glasses on the nose of the wearer.
  • the bridge including its two connecting elements and the jaws including their connecting element are each integrally molded from a plastic injection-molded components.
  • the respective connecting elements 8 and 12 on the one hand and the remaining portions of the bridge 6 and the two jaws 10 and 11 on the other hand consist of mutually different materials and have been connected to each other before bonding the connecting elements with the lenses or only after bonding Connecting elements are connected to the lenses together.
  • the joining surface 14 is formed, which is intended to be firmly bonded to a complementary joining surface on the front of one of the two lenses.
  • the two spectacle lenses 2 and 4 are usually each made of a coated spectacle raw glass having a circular edge.
  • the spectacle raw glass is provided on its front and its back with a coating which usually consists of several layers and should provide scratch resistance and / or influencing the reflection properties and / or dirt-repellent properties of the surfaces of the spectacle lens.
  • FIG. 4 shows the two lenses 2 and 4 of the glasses according to FIG. 1 in turn, when viewed from the front, wherein the formed on the front sides 3 of the two lenses 2 and 4, explained in more detail below joining surfaces are visible, since the bridge 6 and the jaws 10 and 11 of the glasses in FIG. 4 are not shown.
  • the geometric shape of the edge 5 of the two lenses 2 and 4 when viewed from the front (or rear) is referred to as a disk shape.
  • the FIGS. 1 and 4 show the lenses 2 and 4 with only one of many possible and known disc shapes.
  • FIG. 5 shows in a similar representation as FIG. 4 two lenses 2 and 4, the disc shape can be seen from the disc shape of the lenses in FIG. 4 distinguishes, and thus shows an example of another of the many possible and known disc shapes.
  • Each spectacle lens has a geometric center M, which coincides - when viewing the spectacle lens from the front or the rear - with the center of a rectangle designated as a box.
  • This box is described below with reference to the in FIG. 4 shown left lens 2 explained in more detail.
  • the box is defined by an upper tangent T1 to the edges of the two lenses 2 and 4, a lower tangent T2 to the edges of the two lenses 2 and 4 and an outer tangent T3 and an inner tangent T4 to the edge of the lens 2, wherein the tangents T3 and T4 are perpendicular to the tangents T1 and T2.
  • a straight line connecting the centers M of the two spectacle lenses 2 and 4 forms the center line L of each of the two spectacle lenses 2 and 4.
  • a glass holder also referred to as a block or adhesive block, is detachably adhered to the front of the spectacle lens, wherein an axis of rotation of the lens holder extends perpendicularly through the front of the spectacle lens and through the geometric center M of the predetermined lens shape of the spectacle lens to be produced , While the spectacle raw glass is rotated about the axis of rotation of the glass holder, so much material is removed from the edge of the spectacle raw glass by grinding in dependence on the rotational position of the spectacle lens, that the spectacle lens is obtained with the desired disc shape.
  • the state achieved thereby is exemplary for the left lens 2 in the FIGS. 6 and 7 shown.
  • FIG. 6 shows when viewed from the front, the left lens 2 together with the on the front of the 3 Spectacle lens 2 glued glass holder 22 after grinding the edge 5 with the desired disc shape.
  • FIG. 7 shows the lens 2 and the glass holder 22 in section AB in FIG. 6 .
  • the glass holder 22 comprises a substantially rectangular or oval plate 24 and a pin 26 arranged centrally thereon. With its free surface, the plate 24 is glued to the lens 2. In the pin 26, a hole is formed, which defines the axis of rotation 28 of the glass holder 22. On the glass holder 22 means are formed, which have a defined relationship to the center line L of the spectacle lens 2. In the in the FIGS. 6 and 7 illustrated example of the glass holder 22, these means are formed by a longitudinal groove 30 which extends in the direction parallel to the center line L of the lens 2.
  • joining surfaces 2 and 4 are formed on the front sides 3 of the spectacle lenses, wherein a joining surface is provided on each of the spectacle lenses for each of the joining surfaces 14 of the connecting elements 8 and 12. Accordingly, located on the left lens 2, a joining surface 32 for the left connecting element 8 of the bridge 6 and a joining surface 34 for the connecting element 12 of the left jaw 10 and are located on the right lens 4, a joining surface 36 for the right connecting element 8 of the bridge 6 and a Mating surface 38 for the connecting element 12 of the right jaw 11.
  • the two joining surfaces 32 and 36 are also referred to as nasal joining surfaces, since they are in attached glasses near the nose of the wearer, and the two joining surfaces 34 and 38 also referred to as temporal joining surfaces, since they are with attached glasses in the area of the temples.
  • the four joining surfaces on the lenses 2 and 4 are similar in shape and dimensions substantially the joining surface 14 of the respective connecting element 8 and 12, which is glued to the lens. In other words, this means that the joining surfaces on the spectacle lenses on the one hand and the joining surfaces on the connecting elements on the other hand are designed to be complementary to one another.
  • the joining surfaces on the spectacle lenses 2 and 4 have been formed thereon in that in the region of the joining surfaces to be formed, the coating on the front side of the respective spectacle lens is completely, i. has been removed at least up to the total thickness of the coating.
  • the purpose of the removal of the coating is to expose the base material of the lenses, so that the respective joining surface on the lens has the material nature of the base material of the lens. This is a prerequisite for the production of a permanently solid adhesive bond between the connecting elements and the lenses.
  • FIG. 8 shows enlarged again when viewed from the front, the left lens 2 of the considered
  • the joining surfaces on the front side of the spectacle lens 2 or 4 respectively extend from the edge 5 of the spectacle lens or extend up to this edge.
  • Each of the joining surfaces is delimited by two straight lines which are parallel to the center line L of the spectacle lens and whose distance from one another defines the width B of the joining surface, as for the temporal joining surface 34 in FIG FIG. 8 is shown.
  • the geometric center M facing end of each of the joining surfaces is limited by a semicircle.
  • a joining surface center line FM runs centrally between the two two straight edges of each joining surface, as also shown in FIG FIG. 8 is shown.
  • each joining surface on the spectacle lenses is predetermined and determined by the design of the spectacles together with the lens shape of the spectacle lenses 2 and 4.
  • the location of the temporal joining surface 34 is predetermined such that its joining surface centerline FM intersects the tangent T3 at its point of contact at the edge 5 of the spectacle lens 2 or near this contact point.
  • the location of the nasal joining surface 32 on the left-hand lens 2 is predetermined so that its joining center line FM intersects the tangent T4 at its point of contact at the edge 5 or near this point of contact.
  • FIG. 8 a parallel parallel to the tangent T3 parallel P3 is drawn, which has the distance D from the tangent T3 and the edge 5 of the lens 2 intersects in an intersection ST.
  • the intersection point ST has the distance DT from the joining surface center line FM of the temporal joining surface 34.
  • a running parallel to the tangent T4 parallel P4 which has the distance D from the tangent T4 and the edge 5 of the lens 2 intersects at an intersection SN.
  • the intersection point SN has the distance DN from the joining surface center line FM of the nasal joining surface 32.
  • the intersections ST and SN are preferably on the same side of the center line L as the joining surfaces.
  • both the joining surfaces 32 and 34 and the intersection points ST and SN are above the center line L and that the intersections ST and SN lie on the upper portion of the edge 5 of the spectacle lens 2.
  • the values of the distance D are preferably for the nasal Joining surface equal and are usually in the range of 2 to 5 mm.
  • the above explanations to the left lens with reference to FIG. 8 apply mutatis mutandis to the right lens 4, since in the embodiment of the rimless glasses according to FIG. 1 whose left half and right half are symmetrical to each other.
  • the distance DN is the same for the two nasal joining surfaces 32 and 36, and the distance DT is the same for the two temporal joining surfaces 34 and 38.
  • the distances DT and DN are given or fixed to these, so are the distances DT and DN at the same time given or fixed at a given or selected value of the distance D.
  • the predetermined distances DT and DN set the locations of Joint surface center lines FM.
  • the distance DT can assume different values and usually assumes different values. The same applies to the distance DN.
  • each joining surface should be formed as accurately as possible at the predetermined location. It has been found that this high required accuracy can be achieved by utilizing the above-explained geometric relationship between the intersection ST and the temporal mating surface and the geometric relationship between the intersection SN and the nasal mating surface. In the device according to the invention these geometric relationships are used.
  • This device is used to edit the lenses of a rimless glasses of the type described above, wherein it is the processing to the formation of the lateral and nasal joining surfaces by removing the coating on the front of the lenses in the region of the joint surfaces to be formed.
  • the coating is removed at least up to its entire thickness, it is harmless if at the same time some base material of the lenses is removed.
  • FIG. 9 shows the embodiment schematically in perspective view when viewed obliquely from above and forward.
  • FIG. 10 is a schematic sectional view according to CD in FIG. 9 , where in FIG. 10 the device is shown in conjunction with a lens to be processed.
  • the device comprises a housing and a holding device for holding a spectacle lens on or in the device.
  • the holding device comprises a support part 40, on which a flat, substantially rectangular support surface 42 is formed, a contact part 44, on which a flat, substantially rectangular contact surface 46 is formed, and a hold-down.
  • the bearing surface 42 and the abutment surface 46 adjoin one another and enclose a right angle between them.
  • the in FIG. 9 visible support surface 42 is considered as a horizontally oriented surface and accordingly denotes a "vertical" one Course perpendicular to the horizontal support surface 42.
  • the abutment surface 46 is an area which extends vertically upward from the support surface 42 from.
  • the support member 40 and the abutment member 44 are integrally formed on an upper housing part 48 which carries the hold-down.
  • the hold-down comprises a hold-down bar 50, a guide 52 and an actuating lever 54, wherein the guide 52 and the operating lever 54 are shown only schematically in FIG FIG. 10 are shown, but not in FIG. 9 ,
  • the hold-down bar 50 is guided vertically in the guide 52 and is held by the guide 52 such that a arranged at the lower end of the hold-down bar 50 elastic member is approximately centrally above the support surface 42.
  • a spring acts on the hold-down bar 50 in the downward direction.
  • the hold-down rod 50 can be raised against the force of the spring.
  • a spectacle lens for example, the right lens 4 are placed with an edge region on the support surface 42 and thereby applied with its edge 5 against the contact surface 46 and in this position by means of the hold-down bar 50 against or on the Support surface 42 are pressed so that the lens between the support member 40 and the hold-down bar 50 is clamped or clamped and the holding device can exercise their holding function in this way.
  • the holding device may also be referred to as a clamping device or as a clamping device.
  • a drive unit 56 is arranged, to which an electric motor belongs, on the shaft of a chuck 58 is seated.
  • a tool 60 is inserted, which is formed in the illustrated embodiment as an end mill, the cutting end face on in the FIGS. 9 and 10 upper end of the tool 60 is formed and has a diameter which is equal to the width B of the joining surfaces to be formed.
  • the tool 60 may be formed as a front grinder whose end face carries abrasive grains.
  • the drive unit 56 is at a merely schematically in FIG. 10 shown carriage 64, by means of which the drive unit 56 can be moved horizontally on rails not shown within the device or moved. During this movement, the tool 60 is displaced relative to the fixture, with the axis of rotation 62 of the tool 60 sweeping over a plane designated as reference plane RP for purposes of the present description.
  • This reference plane RP coincides with the drawing plane of FIG. 10 together and is in FIG. 11 recognizable in plan view.
  • the elements of the holding device and the rails for the carriage of the drive unit 56 are arranged in or on the device relative to each other such that the support surface 42 and the abutment surface 46 are perpendicular to the reference plane RP and that the axis of rotation 62 of the tool 60 vertically and thus perpendicular to the support surface 42 extends.
  • the tool 60 is moved in the direction perpendicular to its axis of rotation 62 as the drive unit 56 moves or proceed.
  • the direction of movement of the tool 60 is to the left in FIG. 10 the forward direction V of the tool and is the opposite direction of movement of the tool 60 whose return direction R.
  • a control panel 66 which protrudes from the housing and is hinged to the carriage 64 such that by pivoting the control panel 66 of the carriage 64 and the drive unit 56 are moved and thereby the tool 60 in the forward direction V and return direction R advanced or retracted.
  • an unillustrated electric servomotor may be provided, which is coupled to the carriage 64 and can drive it in the forward and reverse directions.
  • a stop 68 is arranged, whose position in the direction of movement of the carriage 64 by means of a setting wheel 70 is adjustable.
  • the carriage 64 hits during the forward movement of the stop 68, so that is limited by the stop 68, the range of movement of the carriage 64 and thereby in turn of the tool 60 in the forward direction in an adjustable manner.
  • a slot 72 is formed, which interrupts the support surface 42 approximately centrally.
  • the slot 72 has in the region of the support surface 42 has a width which is slightly larger than the diameter of the end face of the tool 60 and extends in the direction of movement of the tool 60, so that the tool can enter its entry into the slot 72.
  • the end face of the tool 60 is slightly above the support surface 42.
  • the amount of projection of the end face of the tool 60 with respect to the end surface 42 is adjustable. An easy way to set the extent of the supernatant is to push the tool 60 vertically within the chuck 58 in the desired position and to fix in this position in the chuck 58.
  • the extent of the projection of the end face of the tool 60 determines to what depth in the direction perpendicular to the front of the lens material is removed in the region of a joining surface. Accordingly, the supernatant is adjusted according to the desired Abtragtiefe, wherein the desired Abtragtiefe is at least so large that the coating is removed to its entire thickness on the front of the lens.
  • the slot 72 merges into a housing 74 formed in the housing recess 48, which makes it possible to move the drive unit 56 so far in the forward direction V that the chuck 58 and the tool 60 a position outside of the slot 72 and in FIG. 10 occupy the left of the support surface 42. In this position, the chuck 58 and tool 60 project upwardly over the top of the housing top 48 so that they are freely accessible. In this position, the tool 60 can be replaced and its vertical position in the chuck 58 can be adjusted.
  • the hold-down bar 50 is disposed on the device such that its elastic element is above the slot 72.
  • the in FIG. 9 in the foreground area in which the operating part 66 is arranged referred to as the right area
  • a lying in the right area element or there position is optionally referred to as right element or right position.
  • the area lying on the other side of the reference plane is referred to as the left area and elements and positions located there are referred to as left and left positions, respectively.
  • the holding device of the in the FIGS. 9 and 10 shown embodiment a right stop member 76 and a left stop member 78 are assigned.
  • the right stop member 76 includes a generally parallelepipedal, horizontally extending leg 80 and a generally parallelepipedal, vertically extending leg 82.
  • the leg 80 rests on the support surface 42, is perpendicular to the reference plane RP, and faces at one of the reference planes RP facing front portion 84 on an end face, which is bounded by an edge hereinafter referred to as stop edge 86.
  • the stop edge 86 is rectilinear and perpendicular to the bearing surface 42.
  • the leg 80 passes into the vertically downwardly extending leg 82 on which an actuator engages, which has a thumbwheel 88 and an adjusting spindle 90.
  • the adjusting spindle 90 is engaged with a device-fixed spindle nut, not shown.
  • this can be performed with the aid of guide means, not shown, to ensure that the distance of the stop edge 86 from the contact surface 46 during the adjustment and change of the distance of the stop edge 86 from the reference plane RP does not change.
  • the above explanation of the right stop member 76 applies mutatis mutandis at the same time for the left stop member 78.
  • the left stop member 78 also has the stop edge 86, which is rectilinear and perpendicular to the support surface 42 and whose distance from the reference plane RP is adjustable and changeable.
  • FIGS. 11 to 14 explains how by means of the device described above, the lenses of the rimless glasses can be edited, ie how the joining surfaces can be formed on these. It is first based on the FIG. 11 explains how on the right lens 4 whose temporal joining surface 38 is formed.
  • each joining surface center line FM can be determined by specifying the distance DT or DN of the joining surface center line FM from the intersection ST or SN of a parallel at a distance D from the tangent T3 or T4 to the edge 5 of the spectacle lens 2 or 4.
  • FIG. 11 shows a detail and in plan view of the device according to the FIGS. 9 and 10 in the region of the support surface 42 interrupting slot 72. Further, in FIG. 11 a part of the lens to be processed 4 shown in its processing position, wherein the visible within the edge 5 of the lens 4 elements and contours are seen through the lens through.
  • the stop edge 86 of the left stop member 78 is adjusted by means of the left stop member 78 associated actuator so that the distance of the stop edge 86 from the reference plane RP, which will be referred to as distance DR, equal to the distance DT.
  • the spectacle lens 4 is aligned such that its center line L is parallel to the reference plane RP.
  • the hold-down rod 50 of the blank holder which has previously been held in the raised position, is lowered so that the spectacle lens 4 is clamped between the support surface 42 and the elastic element of the hold-down bar 50 and in this way the spectacle lens is clamped and held in its processing position on or in the holding device.
  • FIG. 8 illustrated geometrical relationships between the edge 5 of the lens and the distances D and DT reproduced, so that the joining surface center line FM of the trainees joining surface in the reference plane RP, in which the axis of rotation 62 of the tool 60 is located.
  • FIG. 11 and FIG. 10 show the lens 4 in its processing position.
  • the housing upper part 48 may be provided with auxiliary lines 92 which run parallel to the reference plane RP (see FIG. 9 ).
  • auxiliary lines 92 which run parallel to the reference plane RP (see FIG. 9 ).
  • the lead of the tool 60 ends when the carriage 64 reaches the stop 68, which is set so that the joining surface 38 has been formed to a predetermined length. Thereafter, the tool 60 is moved back in the return direction R in the rest position and the lens 4 is released from the holding device and removed.
  • the joining surface 38 With high accuracy at the predetermined location for them on the lens 4.
  • the essential reason for this high accuracy is that on the device by means of the stop edge 86, the contact surface 46 and the reference plane RP, the geometric relationships can be reproduced that for the spectacle lens through the intersection ST and SN, the tangent T3 and T4. and the joining surface centerline FM are given (see FIG. 8 ).
  • the stop edge 86 which touches the edge 5, while the spectacle lens rests against the stop edge 86, corresponds to the point of intersection ST or SN.
  • FIGS. 12 to 14 show in the same plan view as FIG. 11 the processing positions of the lenses 2 and 4 during the formation of the remaining joining surfaces 32, 34 and 36th Den in the FIGS. 11 to 14 shown processing positions that the spectacle lens 2 and 4 rests with the front of the edge region of the spectacle lens in which the joining surface is to be formed on the support surface 42 and that the spectacle lens 2 and 4 rests with its edge 5 on the contact surface 46 , Furthermore, the machining positions have in common that the center line L of the respective Eyeglass lens parallel to the reference plane RP and perpendicular to the contact surface 46 extends.
  • FIG. 12 takes the right lens 4, the processing position for the formation of its nasal joining surface 36 a.
  • the stop edge 86 of the right stop member 76 is used, on which the spectacle lens 4 abuts with its edge 5.
  • the distance DR of the stop edge 86 of the right stopper member 76 from the reference plane RP is set to the distance DN in this case.
  • the left stop member 78 and its stop edge are spaced from the lens 4.
  • FIG. 13 shows the left lens 2 in the processing position for its nasal joining surface 32.
  • the left stop member 78 is used with its stop edge 86 at which abuts the edge of the lens 2.
  • the distance DR is set to the distance DN.
  • the right stop member 76 and its stop edge are spaced from the lens 2.
  • FIG. 14 shows the left lens 2 in the processing position for its temporal joining surface 34.
  • the right stop member 76 is used with its stop edge 86 at which the left lens 2 strikes with its edge, but - unlike the case according to FIG. 12 -
  • the distance DR is set to the distance DT.
  • the left stop member 78 and its stop edge are spaced from the lens 2. In each of the in the FIGS. 12 to 14 shown
  • the values of the distance DN and of the distance DT differ.
  • the distance DR of each stop edge 86 used from the reference plane RP is continuously adjustable, so that it can be set to different values of DN and DT. Accordingly, the device is suitable for processing spectacle lenses with numerous mutually different disc shapes and for these predetermined locations of the joining surfaces.
  • the abutting edge used during the processing of a spectacle lens is formed on a stop member, which is movably guided and held on the other device, so that the distance of the stop edge from the reference plane changed by adjusting the position of the stop member and can be adjusted.
  • a second embodiment of the apparatus described below differs from the first embodiment.
  • the stop edge is formed on a stop member, which can be detachably mounted to the rest of the device, wherein the distance of the stop edge from the reference plane is variable in that the stop member is mounted on the other device with mutually different orientations.
  • FIG. 15 shows the device according to the second embodiment in fragmentary front view, the view when viewed from the left in FIG. 10 corresponds, wherein the elements of the blank holder are not shown.
  • a right pin 96 and a left pin 98 are used, which are aligned perpendicular to the support surface 42 and are arranged symmetrically to the reference plane RP, so that their distances DS from the reference plane RP are equal.
  • stop member 100 has a cuboid base body 102 and one of them centrally vertically upwardly outgoing handle portion 104.
  • the block-shaped base body 102 is provided with two mutually parallel, rectangular end faces 106 and has a bore, which makes it possible to insert the stop member 100 on one of the pins 96 and 98 and thereby mounted on the device.
  • FIG. 15 shows the stop member 100 in its mounted on the left pin 98 state.
  • the two end surfaces 106 extend parallel to the reference plane RP and two of the sides of the reference plane RP facing end surface 106 perpendicular to the support surface 42, so that the far from the contact surface 46 side of this end face 106 can be used as a stop edge and the Function of the above-explained in connection with the first embodiment stop edge 86 fulfilled.
  • the dimensions of the stop member 100 and the location of the pins 96 and 98 are selected so that in the mounted state of the stop member 100 serving as a stop edge 86 side of the two rectangular end faces 106 of the contact surface 46 has the distance DA.
  • That of the two end surfaces 106, which is used in the formation of a temporal joining surface and is therefore referred to as a temporal end face and in the FIGS. 15 and 16 is marked with "T” has the distance of the axis of the particular for receiving the pin 98 bore in the main body 102.
  • That of the two end surfaces 106, which is used in the formation of a nasal joining surface and is accordingly referred to as a nasal end face and in the FIGS. 15 and 16 is denoted by "N" has the distance LN from the axis of the bore.
  • the stop member 100 may be in the in FIG. 15 shown left position on the other device, wherein it is either aligned such that the temporal end face 106 of the reference plane RP faces, as shown in FIG. 15 is shown, or that the nasal face faces the reference plane RP. Further, the abutment member 100 can be mounted by means of the right pin 96 in the right position on the other device and be, wherein the stop member 100 is oriented such that either its temporal face or its nasal face faces the reference plane RP.
  • FIGS. 17 to 20 show in a similar representation as the FIGS. 11 to 14 the lenses 2 and 4 in their respective processing positions for the nasal and temporal joining surfaces.
  • these figures show the stop member 100 in its respective position and orientation.
  • the right lens 4 is shown in its processing position for the temporal joining surface 38.
  • the stop member 100 is in its left position, which is also in FIG. 15 is shown, and the stopper member 100 is aligned such that its temporal end face of the reference plane RP faces.
  • the spectacle lens strikes against the side of this end face remote from the abutment surface 46, so that the last-mentioned side of the end face forms the abutment edge 86 in this case.
  • the distance DA of the stop edge 86 of the contact surface 46 is equal to the above with reference to FIG. 8 explained distance D.
  • the distance of the stop edge 86 from the reference plane RP is equal to the distance DT because of based on FIG. 15 explained distance relationships.
  • FIG. 18 shows the right lens 4 in its processing position for the nasal joining surface 36.
  • the stop member 100 is in its right position, the nasal face of the stop member 100 of the reference plane RP faces and one side of this end face forms the stop edge 86 at the the spectacle lens strikes.
  • the distance of this stop edge 86 from the reference plane RP is equal to the distance DN.
  • FIG. 19 takes the left lens 2 its processing position for the nasal joining surface 32 a.
  • the stop member 100 is in its left position, wherein the nasal face of the stop member 100 faces the reference plane RP and the side facing away from the contact surface 46 of the nasal face forms the stop edge 86 whose distance from the reference plane RP is equal to the distance DN.
  • the 20 shows the left lens 2 in its processing position for the temporal joining surface.
  • the stop member 100 in its right position, wherein the temporal face of the reference plane RP faces and the side facing away from the contact surface 46 of this end face forms the abutment edge 86.
  • the stop edge 86 can be arranged at all locations relative to the reference plane RP by implementing and appropriately aligning the stop member 100 to the rest of the device, for the formation of all four joining surfaces of the two lenses 2 and 4 are required.
  • the joining surfaces can be formed only for a specific disc shape, namely that disc shape, are matched to the values of the distances DT, DN and D, the dimensions of the stop member 100.
  • the respectively used stop member 100 is one of a plurality of similar stop members of a set of stop members differing in the values of their distances LT and / or LN and optionally the distance DA, each of these stop members of a particular is assigned by several different lens shapes and is then used when lenses are to be processed with this particular disc shape.
  • FIGS. 21 and 22 show in a similar representation as the FIGS. 15 and 16 a third embodiment of the Device according to the invention.
  • the third embodiment is provided with a stopper member 108 detachably mountable to the rest of the apparatus, which can be mounted on the other apparatus in the left position and the right position, each being differently orientable.
  • the third embodiment differs from the second embodiment substantially in terms of the shape of the abutment member.
  • the stop member 108 of the third embodiment comprises two legs arranged at right angles to each other, at the free ends of each of which one of the rectangular end faces 106 is formed, for which mutatis mutandis the explanation applies to the end faces 106 of the second embodiment.
  • a vertically extending slot 110 is formed, in which each of the two legs of the stop member 108 can be inserted without play in the vertical direction.
  • a similar slot 110 is formed on the right side of the device.
  • FIG. 21 shows the stop member 108 in its left position and one of the two possible orientations in the left position.
  • the provided with the nasal face leg of the stop member 108 is inserted into the left slot 110, and provided with the temporal face leg of the stop member 108 rests on the support surface 42, wherein the dimensions of the stop member 108 are such that the temporal end face and whose two sides perpendicular to the support surface 42 have sides of the reference plane RP the distance DT.
  • the leg with the temporal end face is inserted into the slot 110 and the leg with the nasal end face of the reference plane RP faces, the nasal face and its two sides perpendicular to the support surface 42 sides of the reference plane RP the distance DN.
  • stop member 108 If the stop member 108 is inserted with one of its two legs in the right slot 110 and the stop member 108 assumes its right position, resulting in conditions that are analogous to those explained above for the stop member 108 in its left position.
  • FIGS. 17 to 20 explained geometric relationships between the lenses in their processing positions and the respective stop edge 86 apply equally to the third embodiment and are therefore not explained again.
  • This alignment process is carried out manually by the operator, for example, while he the course of the rod 94 (see FIG. 10 ) in relation to the auxiliary lines 92.
  • each of the embodiments described above may be provided with a receiving device which holds the lens to be processed such that its center line L is always parallel to the reference plane RP.
  • An embodiment of such a receiving device is in FIG. 23 shown, which is a partial and schematic representation in section according to CD in FIG. 9 ie in the same section plane as in FIG. 10 , acts.
  • receiving device comprises a cross table 112, which is inside the device as a whole in Substantially perpendicular to the contact surface 46 is movable or movable.
  • An upper part 114 of the cross table 112 can be moved or moved at its lower part 116 horizontally substantially perpendicular to the reference plane RP.
  • the top 114 carries a guide member 118 which is guided on the upper part 114 substantially vertically displaceable and acts on a vertically upward spring force.
  • a receiving part 120 is arranged, which is pivotable relative to the guide part about a pivot axis which is substantially perpendicular to the reference plane RP.
  • the receiving part 120 is formed such that it is a glass holder 22 from the basis of FIGS. 6 and 7 can record type described.
  • the glass holder 22 accommodated by the receiving part 120 or inserted into the receiving part 120 is held in a rotationally fixed manner by the receiving part 120, i. held such that the glass holder 22 on the receiving part 120 can not rotate about the rotation axis 28 of the glass holder 22.
  • the receiving part 120 holds the glass holder 22 in a position such that the center line L of the glass lens glued to the glass holder 22 runs parallel to the reference plane RP.
  • the center line L of the Eyeglass lens In these movements the center line L of the Eyeglass lens, however, always aligned parallel to the reference plane RP.
  • the lens disposed on the receiving device can perform all the movements that are required to bring it into its processing position in and on the holding device. In these movements, the center line L of the spectacle lens always remains aligned parallel to the reference plane RP, so that the operator need not worry about this alignment.
  • the device described above with reference to the exemplary embodiments for forming joining surfaces on the spectacle lenses of rimless spectacles is structurally comparatively simple and enables simple and reliable handling and operation. It makes it possible, in particular, to form the joint surfaces exactly at the locations intended for the joining surfaces on the spectacle lenses.
  • the device is suitable for the formation of the joining surfaces on the spectacle lenses for numerous different disc shapes and for the respective disc shape predetermined locations of the joining surfaces.
  • the holding device for holding the spectacle lens to be machined is fixed to the apparatus and the drive unit 56 and the tool 60 carried by it are movable or movable. Notwithstanding this, the drive unit 56 and the tool 60 can be arranged fixed to the device and the holding device relative to the tool 60 in the forward direction V and return direction R can be moved.
  • This mobility can be achieved in the described embodiments, for example, characterized in that the upper housing part 48 is slidably guided with the arranged thereon elements of the holding device and arranged thereon at least one stop member on the lower housing part.
  • the invention is not limited to the described embodiments.
  • the device for processing a spectacle lens by removing material in the region of a joining surface to be formed comprises a tool provided with a cutting end face, the axis of rotation of which is movable in a forward direction relative to a holding device and thereby passes over a reference plane.
  • the holding device comprises a support surface, a vertically aligned contact surface and a stop edge.
  • the support surface and the abutment surface are perpendicular to the reference plane, and the abutment edge is perpendicular to the support surface and parallel to the reference plane and has a distance from the reference plane, which is variable.
  • the support surface is interrupted so that the projecting end face of the tool can be moved along the interruption.
  • the spectacle lens In its processing position, the spectacle lens rests on the support surface, it rests against the contact surface and strikes it with its edge against the stop edge. If the distance of the abutment edge from the reference plane is set to a predetermined value for the spectacle lens to be processed, the joining surface is formed by means of the tool exactly at the location of the joining surface predetermined for the spectacle lens.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Eyeglasses (AREA)

Claims (12)

  1. Installation d'usinage d'un verre d'une paire de lunettes sans cercles, ladite installation comportant un dispositif de maintien pour le maintien du verre de lunette, un outil (60) réalisé comme fraise en bout ou meule en bout et une unité d'entraînement (56) supportant l'outil (60), laquelle est destinée à entraîner en rotation l'outil (60) autour de son axe de rotation (62),
    caractérisée
    en ce que le dispositif de maintien comporte deux surfaces planes disposées en angle droit l'une par rapport à l'autre, dont l'une est réalisée contre une partie d'appui (40) et forme une surface d'appui (42), et l'autre est réalisée contre une partie de butée (44) et forme une surface de butée (46), et un serre-flan (50, 52, 54), lequel est destiné à serrer contre la surface d'appui (42) le verre de lunette reposant sur celle-ci,
    en ce que l'unité d'entraînement (56) supporte l'outil (60) de telle manière que l'axe de rotation (62) de celui-ci s'étend perpendiculairement à la surface d'appui (42),
    en ce que le dispositif de maintien et l'outil (60) sont déplaçables l'un par rapport à l'autre, de telle manière que lors du déplacement relatif, l'axe de rotation (62) de l'outil (60) balaie un plan de référence (RP) par rapport au dispositif de maintien,
    en ce que la surface d' appui (42) et la surface de butée (46) s'étendent perpendiculairement au plan de référence (RP),
    en ce qu'une fente (72) est réalisée dans la partie d'appui (40), laquelle interrompt la surface d'appui (42), et où l'outil (60) peut pénétrer lors du déplacement relatif entre le dispositif de maintien et l'outil (60), et
    en ce qu'au moins une pièce de butée (76, 78 ; 100 ; 108) est associée au dispositif de maintien, laquelle présente un bord de butée (86), ledit bord de butée (86) s'étendant perpendiculairement à la surface d'appui (42) et présentant un espacement (DA) pouvant être défini par rapport à la surface de butée (46) ainsi qu'un espacement (DR ; DN, DT) par rapport au plan de référence (RP), ledit espacement (DR ; DN, DT) du bord de butée (86) par rapport au plan de référence (RP) pouvant être modifié.
  2. Installation selon la revendication 1, caractérisée en ce que le dispositif de maintien est monté fixement sur l'installation, et en ce que l'unité d'entraînement (56) et l'outil (60) sont montés dur un chariot (64) mobile, de manière à produire le mouvement relatif entre le dispositif de maintien et l'outil (60) par déplacement du chariot (64).
  3. Installation selon la revendication 2, caractérisée par une pièce de commande (66) pour le déplacement du chariot (64), accouplée au chariot (64) et pouvant être actionnée manuellement.
  4. Installation selon la revendication 2, caractérisée par un moteur de réglage accouplé au chariot (64) pour le déplacement du chariot (64).
  5. Installation selon l'une des revendications 2 à 4, caractérisée par une butée (64) réglable, destinée à limiter la plage de mouvement du chariot (64).
  6. Installation selon l'une des revendications 1 à 5, caractérisée en ce que deux pièces de butée (76, 78) sont associées au dispositif de maintien, lesquelles présentent chacune le bord de butée (86), une des deux pièces de butée (76, 78) étant disposée sur un côté du plan de référence (RP), et la deuxième des deux pièces de butée (76, 78) étant disposée sur l'autre côté du plan de référence (RP), et en ce que chacune des deux pièces de butée (76, 78) est montée de manière mobile sur le reste de l'installation, de telle manière que, par déplacement de la pièce de butée (76, 78) vers une position modifiée, l'espacement (DR) du bord de butée (86) de la pièce de butée (76, 78) est modifié par rapport au plan de référence (RP).
  7. Installation selon la revendication 6, caractérisée en ce que chacune des deux pièces de butée (76, 78) comporte une partie frontale (84) avec une surface frontale opposée au plan de référence (RP), un bord de la surface frontale formant le bord de butée (86), et en ce que la partie frontale (84) est déplaçable dans la direction perpendiculaire au plan de référence (RP) au moyen d'un entraînement de réglage.
  8. Installation selon la revendication 7, caractérisée en ce que l'entraînement de réglage comporte un axe de réglage (90) et une molette de réglage (88) pouvant être actionnée manuellement.
  9. Installation selon l'une des revendications 1 à 5, caractérisée en ce que la ou les pièces de butée (100 ; 108) sont une ou des pièces de butée quelconques parmi un jeu de plusieurs pièces de butée, dont chacune peut être montée de manière amovible sur le reste de l'installation, les pièces de butée (100 ; 108) du jeu se distinguant entre elles en ce que les espacements (DN, DT) de leur bord de butée (86) par rapport au plan de référence (RP) diffèrent entre eux en état de montage des pièces de butée (100 ; 108), de telle manière que l'espacement (DN, DT) du bord de butée (86) peut être modifié par rapport au plan de référence (RP), par remplacement d'une pièce de butée (100 ; 108) montée par une autre pièce de butée.
  10. Installation selon la revendication 9, caractérisée en ce que les pièces de butée (100 ; 108) du jeu présentent chacune deux surfaces frontales (106) rectangulaires, dont l'une est opposée au plan de référence (RP) et s'étend parallèlement à celui-ci en état de montage de la pièce de butée (100 ; 108), chaque pièce de butée (100 ; 108) pouvant être montée sur le reste de l'installation tant sur le premier côté que sur l'autre côté du plan de référence (RP), et pouvant en outre être montée sur chaque côté du plan de référence (RP) pour modifier l'espacement (DN, DT) du bord de butée (86) par rapport au plan de référence (RP), de telle manière que l'une ou l'autre des surfaces frontales (106) de la pièce de butée (100 ; 108) soit opposée au plan de référence (RP).
  11. Installation selon l'une des revendications 1 à 5, caractérisée en ce que la ou les pièces de butée (100 ; 108) peuvent être montées de manière amovible sur le reste de l'installation et présentent deux surfaces frontales (106) rectangulaires, dont l'une est opposée au plan de référence (RP) et s'étend parallèlement à celui-ci en état de montage de la pièce de butée (100 ; 108), la pièce de butée (100 ; 108) pouvant être montée sur le reste de l'installation tant sur le premier côté que sur l'autre côté du plan de référence (RP), et pouvant en outre être montée sur chaque côté du plan de référence (RP) pour modifier l'espacement (DN, DT) du bord de butée (86) par rapport au plan de référence (RP), de telle manière que l'une ou l'autre des surfaces frontales (106) de la pièce de butée (100 ; 108) soit opposée au plan de référence (RP).
  12. Installation selon l'une des revendications 1 à 11, caractérisée par une pièce de réception (120), sur laquelle le verre de lunette peut être fixé de manière amovible, et par une table à mouvements croisés (112) supportant la pièce de réception (120), la table à mouvements croisés (112) étant mobile sur un plan de déplacement perpendiculaire au plan de référence (RP) et à l'axe de rotation (62) de l'outil (60), et la table à mouvements croisés (112) supportant la pièce de réception (120) de manière à rendre celle-ci déplaçable sur la table à mouvements croisés (112) dans la direction parallèle à l'axe de rotation (62) de l'outil (60), et en outre autour d'un axe de pivotement perpendiculaire au plan de référence (RP).
EP10163543A 2010-05-21 2010-05-21 Dispositif d'enlèvement Not-in-force EP2388106B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10163543A EP2388106B1 (fr) 2010-05-21 2010-05-21 Dispositif d'enlèvement
US13/009,401 US8550883B2 (en) 2010-05-21 2011-01-19 Abrasion apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10163543A EP2388106B1 (fr) 2010-05-21 2010-05-21 Dispositif d'enlèvement

Publications (2)

Publication Number Publication Date
EP2388106A1 EP2388106A1 (fr) 2011-11-23
EP2388106B1 true EP2388106B1 (fr) 2012-10-31

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Country Link
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EP (1) EP2388106B1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10875201B2 (en) 2018-04-04 2020-12-29 Swanstrom Tools Usa Inc. Relief guard for hand tools

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3358656B2 (ja) * 1999-10-20 2002-12-24 ホーヤ株式会社 眼鏡レンズ穴あけ治具位置決め装置
US6572451B1 (en) * 2000-10-17 2003-06-03 Hoya Corporation Spectacle lens machining method and apparatus
FR2865046B1 (fr) * 2004-01-08 2006-03-10 Frederic Dupuy Dispositif pour le percage de verres et la finition des vis d'assemblage et son procede associe
ATE509295T1 (de) 2007-07-24 2011-05-15 Wilhelm Anger Verfahren zur herstellung einer randlosen brille
EP2090921B1 (fr) * 2008-02-18 2012-06-20 Wilhelm Anger Procédé de fabrication d'une paire de lunette sans branche
EP2105782A1 (fr) * 2008-03-25 2009-09-30 Wilhelm Anger Procédé et dispositif de traitement de verres de lunette revêtus

Also Published As

Publication number Publication date
US20110287696A1 (en) 2011-11-24
EP2388106A1 (fr) 2011-11-23
US8550883B2 (en) 2013-10-08

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