EP1616663B1 - Dispositif pour l'usinage des bords de lentilles ophtalmiques - Google Patents

Dispositif pour l'usinage des bords de lentilles ophtalmiques Download PDF

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Publication number
EP1616663B1
EP1616663B1 EP05022730A EP05022730A EP1616663B1 EP 1616663 B1 EP1616663 B1 EP 1616663B1 EP 05022730 A EP05022730 A EP 05022730A EP 05022730 A EP05022730 A EP 05022730A EP 1616663 B1 EP1616663 B1 EP 1616663B1
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EP
European Patent Office
Prior art keywords
tool
edge
machining
slide
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05022730A
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German (de)
English (en)
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EP1616663A1 (fr
Inventor
Steffen Wallendorf
Holger Schäfer
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Satisloh GmbH
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Satisloh GmbH
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Filing date
Publication date
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Publication of EP1616663A1 publication Critical patent/EP1616663A1/fr
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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
    • 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
    • B24B9/148—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 electrically, e.g. numerically, controlled
    • 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
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • B24B47/225—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation for bevelling optical work, e.g. lenses
    • 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

Definitions

  • the present invention relates to a device for edging an optical lens according to the preamble of claim 1. More particularly, the invention relates to a suitable for industrial use, CNC-controlled device for edge processing of spectacle lenses, which allows spectacle lenses in larger Finishing quantities with the required accuracy in very short processing times on the edge.
  • optical lenses are optical lenses for spectacles made of common materials such as polycarbonate, mineral glass, CR 39, HI index, etc., and any shape of the peripheral edge of the lens or the lens blank to understand that before editing their edge can already be processed on one or both optically effective surface (s) but need not.
  • the generic EP-A-0 917 929 discloses an edge processing machine for spectacle lenses, which has two tool spindles to increase the efficiency during machining, which are arranged parallel to the vertical axis of rotation of the lens to be processed on the edge and are each equipped with a grinding wheel package.
  • the one grinding wheel package comprises a rough grinding wheel as well as an intermediate grinding wheel provided with different grooves for faceting, while the other grinding wheel pack comprises a roughing wheel as well as a finishing wheel provided with faceting grooves for finishing.
  • a (XZ) cross slide assembly is provided with a vertical slide and a horizontal slide.
  • each tool package is movable in the radial direction relative to the spectacle lens to be processed and parallel to the axis of rotation of the spectacle lens.
  • the spectacle lens to be machined is clamped between two coaxial spectacle lens holding shafts, of which the lower spectacle lens holding shaft is arranged stationary, while the upper spectacle lens holding shaft can be moved only in the direction of the workpiece axis relative to the lower spectacle lens holding shaft.
  • a CNC-controlled rotary drive is provided for each spectacle lens holding shaft, so that the known edge-machining machine is controlled in a total of 6 CNC axes.
  • the rotary actuators are hereby CNC-technically coupled for a simultaneous rotation of the spectacle lens to be processed.
  • an eyeglass lens edge grinding machine has been proposed for accelerating the edge processing of spectacle lenses (US Pat. No. 4,179,851, DE-A-34 18 329), which, in reversal of the above conditions, has a grinding disk package which can be rotated about a horizontally extending axis of rotation but is otherwise stationary. Furthermore, this machine for simultaneous edge processing of two lenses has two pairs of coaxial lens holding shafts, which are aligned parallel to the tool axis of rotation.
  • Each pair of spectacle lens holding shafts is here associated with an (X-Y) cross slide arrangement, so that the respective rim to be machined and clamped between the spectacle lens holding shafts of a pair can be moved in the radial direction relative to the grinding wheel package and parallel to the axis of rotation of the grinding wheel package.
  • DE-U-298 23 464 discloses a concept in which for accelerated production of left and right lenses for a spectacle frame, a conventional processing machine for shaping the left lens and another conventional processing machine for shaping the right spectacle lens via a conveyor and a handling device are linked together.
  • the invention is based on the prior art according to EP-A-0 917 929 based on the object to provide a simple and compact designed device for edging an optical lens, in particular a spectacle lens, which meets industrial requirements in terms of throughput and processing quality.
  • an additional machining device having at least one further edge processing tool for the optical lens is attached to the second carriage, which is movable from a park position to a machining position between the optical lens and the (first) edge processing tool on the tool spindle.
  • additional necessary machining operations such as the attachment of bores or grooves to a spectacle lens
  • additional necessary machining operations can be carried out in addition to the first edge machining tool provided on the tool spindle, without the optical lens being removed from its clamping would have, which also speeds up the edge processing.
  • the existing, the base frame and the carriage comprehensive axle assembly is used in an advantageous manner, ie additional controlled axes for the other edge processing tool and the associated costs are unnecessary. If the processing of the optical lens with the provided on the tool spindle first edge processing tool, the other edge processing tool is in its parking position.
  • the latter For further processing of the optical lens with the further edge processing tool, the latter is moved from its parking position into its processing position in which it is located between the optical lens and the first edge processing tool on the tool spindle, ie in the direction of the machining advance in front of the first edge processing tool that the latter is not in the way of further processing. It can be seen that now the feed and feed movements of the further edge processing tool can be controlled like the movements of the first edge processing tool, wherein only the distance between the first edge processing tool and the further edge processing tool is to be considered control technology.
  • the additional processing device has its own housing, which is flanged to the second carriage. Due to this modular design, the device can be retrofitted without difficulty with the additional processing device.
  • the additional processing means comprises a pivoting mechanism, by means of which the further edge processing tool is pivotable from the parking position into the processing position.
  • a pivoting mechanism advantageously allows movement of the further edging tool into the space between the first edging tool and the optical lens to be machined, i.e. with only one degree of freedom. a movement of the further edge processing tool around the first edge processing tool around.
  • the pivoting mechanism according to claim 4 has expediently mounted on the housing pivot lever and a simple linear pivot drive, which is hinged at one end to the housing and with its other end on the pivot lever, wherein it is preferably a pneumatic cylinder in the linear pivot drive.
  • the further edge processing tool is rotationally driven about an axis of rotation by means of a particular independent of the rotary drive of the first edge processing tool rotary drive.
  • a further rotating edge processing tool it may be, for example, a drill or end mill to form holes or grooves in the edge region of a spectacle lens, as specified in claim 6, which requires the attachment of the spectacle lens in a spectacle frame become.
  • grinding wheels for attaching Dachfacetten and / orpatifasen on the lens edge are conceivable;
  • tools for attachment of grooves or grooves on the peripheral edge of the lens with geometrically indefinite cutting, such as sintered diamond discs, or geometrically determined cutting, such as saw blades or disc milling.
  • the axis of rotation of the further edge-machining tool expediently runs parallel to the axis of rotation of the (first) edge-machining tool provided on the tool spindle.
  • the rotary drive for the further edge processing tool is mounted on the pivot lever, which facilitates the transmission of torque to the further edge processing tool, wherein the axis of rotation of the rotary drive is perpendicular to the axis of rotation of the further edge processing tool.
  • the latter is conducive to a compact design, wherein a deflection of the torque can be done in a simple manner by means of, for example, a Kegelradcruung or a flexible shaft.
  • the additional processing device a rotationally driven by the rotary drive tool holder, which has a first clamping mechanism for radially clamping a edge processing tool and a second clamping mechanism for axially clamping at least one edge processing tool.
  • the above-described construction of the device with a tool spindle for a first edge machining tool and an additional machining device for at least one further edge machining tool allows a variety of tool combinations and thus the implementation of different processing methods.
  • a combination tool with a grooved cutter for producing the peripheral contour and optionally a Dachfacette of a spectacle lens and a grinding wheel for polishing the possibly provided with a Dachfacette spectacle lens circumference may be provided as the first edge processing tool
  • the additional processing device as described above with tools for training can be equipped by holes, grooves, grooves and / or bevels in the edge region of the lens.
  • the patent claim 10 provides that the first direction is vertical while the second direction is horizontal.
  • the vertical arrangement of the support shafts for the optical lens to be processed due to the parallelism between the first direction and the workpiece axis of rotation has the advantage that, in particular, an automatic loading of the device by means of suitable handling devices, as would be expediently provided in industrial production, is easier to accomplish.
  • Figs. 1 to 3 there is shown an apparatus for edging an optical lens L in the form of a spectacle lens which is intended to be machined between two axially aligned, i.e. only schematically illustrated, lenses.
  • coaxial holding shafts 10, 12 is clamped, which are rotatable about a CNC-controlled workpiece axis of rotation R.
  • the device has a first or Z-slide 14, which is guided longitudinally displaceably on a base frame 16 in a direction parallel to the workpiece axis of rotation R - in the illustrated embodiment, the vertical direction Z -.
  • the device has a second or X-carriage 18, which carries a generally designated as a tool spindle 20 processing device on which a schematically shown only in Fig.
  • first edge processing tool 22 for the optical lens L is mounted.
  • This carriage 18 is guided on the Z-slide 14 in a direction perpendicular to the first direction Z second direction - in the illustrated embodiment, the horizontal direction X - longitudinally displaceable. It can be seen that the first edge processing tool 22 can be moved by means of a movement of the carriages 18 and 14 in relation to the optical lens L to be processed radial or parallel to the rotation axis R of the optical lens L to a certain longitudinal portion of the first edge processing tool 22 with the optical lens L in processing engagement.
  • the base frame 16 seen in cross-section is substantially O-shaped and surrounds or encloses the Z-carriage 14 so that it can be moved up and down in a substantially O-shaped opening 24 of the base frame 16 in the vertical direction Z, ie.
  • the Z-carriage 14, in turn, is substantially O-shaped in cross-section and surrounds or encloses the X-carriage 18 so that it is in a substantially O-shaped recess 26 of the Z-carriage 14 in the horizontal direction X, ie can be moved back and forth. Due to the substantially O-shaped configuration of the base frame 16 and the Z-slide 14 is achieved due to the thus given closed power flow high rigidity and due to the existing symmetries very good thermal stability, which predestined the device described here for industrial use ,
  • an additional processing device 28 is attached to the second or X-carriage 18 - as will be described in more detail below with reference to FIGS. 5 to 8 - the at least one further, in the illustrated embodiment a plurality of further edge processing tools 30 for the optical lens L, which can be moved from a parking position or rest position shown in Figs. 1, 5 and 7 to a processing position shown in Fig. 8, in which the further edge processing tools 30 between the optical lens L and the first edge processing tool 22 and the tool spindle 20 are located.
  • the feed and advancing movement of the other edge processing tools 30 in relation to the optical lens L radial direction or parallel to the axis of rotation R of the optical lens L with the provided for the first edge processing tool 22 XZ axis control can be done, ie without much additional control effort for the further edge processing tools 30.
  • the device shown in the figures is part of a lens edge processing machine whose other components are not shown here for the sake of simplicity of illustration.
  • the base frame 16 designed as a welded or cast construction is attached to a machine frame (not shown) by means of suitable fastening elements, such as screws, via flange sections 32 provided on both sides of the base frame 16, as shown in FIGS.
  • a Werk Kazantriebs- and clamping device for the optical lens L to be processed is further attached, of which in FIGS. 1 and 5, only the support shafts 10 and 12 are shown schematically, which can be driven synchronously about the workpiece axis of rotation R and for clamping the optical lens L by means of a lifting device in the axial direction relative to each other are adjustable.
  • the machine frame carries the complete panel of the lens edge processing machine, an operating unit with input devices (eg keyboard, data readers, etc.) and output devices (eg screen, printer, etc.) and possibly handling or transport equipment or systems for the processed or processed optical lenses L, such as in the older German patent application 100 29 966.0-22 the applicant will be described.
  • a control cabinet for receiving a conventional industrial control is attached to the machine frame, which controls all movements of the lens edge processing machine.
  • the tool spindle 20 has a spindle housing 34, with which the tool spindle 20 is flanged to a best seen in Fig. 2 end face 36 of the X-carriage 18 so that the axis of rotation C 1 of the edge processing tool 22 parallel to the Workpiece axis of rotation R runs.
  • a tool shaft is rotatably mounted, on which the first edge processing tool 22 is fixed and which are driven by means of a rotary drive 38 can, which is flanged at the top in Fig. 1 end of the spindle housing 34 on the spindle housing 34.
  • the first edge processing tool 22 is formed in the illustrated embodiment as a combination tool with different processing sections, which may include milling, grinding and / or polishing sections.
  • processing sections which may include milling, grinding and / or polishing sections.
  • the tools that are possible here and the edgebanding methods that can be carried out with them are well known to the person skilled in the art and will therefore not be described in greater detail here.
  • a nozzle assembly 40 which is secured to the spindle housing 34 and serves to spray cooling liquid into the region between the optical lens L and the first edge processing tool 22 during processing of the optical lens L to tool and workpiece cool and remove chips or the machining abrasion.
  • the holding shafts 10, 12 clamping the optical lens L protrude into a working space in which the tool spindle 20 is also located with the first edge processing tool 22 and which is separated outwardly by the lining of the lens edge processing machine not shown in the figures.
  • the bellows 44 is arranged between the slider 42 and the tool spindle 20 as seen in the horizontal direction X and fixed with its ends on the slider 42 and the spindle housing 34 of the tool spindle 20.
  • the bellows 44 is shown broken away to show a housing 46 of the additional processing device 28, which is flanged from below to the X-carriage 18.
  • the further edge processing tools 30 of the additional processing device 28 Finally, in their parking position through a corresponding recess in the spindle housing 34 of the tool spindle 20 in the working space in front.
  • suitable sealing measures are taken to prevent the coolant spraying around in the working space during machining from penetrating into the housing 46 of the additional processing device 28.
  • the linear guides 48 extend in a symmetrical arrangement on the base frame 16 parallel to each other.
  • Each of the linear guides 48 for the Z carriage 14 has a guide rail 50 fixed to the base frame 16 by means of, for example, screws, and two carriages or guide shoes 52 engaging with the guide rail 50.
  • the guide shoes 52 are in turn symmetrically arranged at the bottom and top by means of e.g. Screws on the Z-carriage 14 attached.
  • each have a linear guide 54 is provided for the designed as a welded or cast construction X-carriage 18.
  • the linear guides 54 extend in a symmetrical arrangement on the Z slide 14 parallel to one another and in a direction perpendicular to the course of the linear guides 48 on the base frame 16.
  • Each of the linear guides 54 for the X-carriage 18 has a Z-slide 14 additionally stiffened by ribs, from below by means of eg screws fastened guide rail 56 and two engaging with the guide rail 56 carriage or guide shoes 58.
  • the guide shoes 58 are in turn secured in a symmetrical arrangement from above on the X-carriage 18 by means of screws, for example.
  • the linear guides 48 for the Z carriage 14 and the linear guides 54 for the X carriage 18 may be commercially available purchased assemblies or parts, with the guide shoes 52 and 58, respectively, being equipped with lubricated ball chains, respectively Run smoothly in the longitudinal direction and play in the transverse direction in each associated longitudinal grooves of a cross-section dovetail-shaped portion of the corresponding guide rail 50 and 56, respectively.
  • CNC-controlled hollow-shaft servomotors 60 and 62 are provided, each having a rotatable nut, not shown here, which is in operative engagement with a respective associated end-rotatably clamped ball screw 64 and 66, respectively.
  • the hollow shaft servomotor 60 for the Z slide 14 is flanged on top of the base frame 16.
  • the associated ball screw 64 is rotatably mounted on the Z-carriage 14. In the illustrated embodiment, the ball screw 64 engages centrally on the Z slide 14 in a direction perpendicular to the X and Z directions.
  • the hollow shaft servomotor 62 for the X-carriage 18 is, as shown in FIG. 3, mounted in the illustrated embodiment, in a direction perpendicular to the X and Z directions, centrally mounted on the X-carriage 18, so that the hollow shaft servo motor 62 together with the X-carriage 18 can proceed.
  • the hollow shaft servo motor 62 associated ball screw 66 is rotatably secured by a nut 68 to a yoke plate 70, which in a direction perpendicular to the X and Z directions at the end remote from the tool spindle 20 end of the X-carriage 18 via a bridge extends the X-carriage 18 and is firmly connected thereto.
  • the ball screw 64 for the linear motion of the Z-carriage 14 has a common thread pitch of e.g. Has 5 mm stroke per revolution, as shown in FIG. 4, the ball screw spindle 66 for the linear movement of the X-carriage 18 on the other hand a significantly larger pitch, which can be between 20 and 35 mm stroke per revolution and in the embodiment shown here about 30 mm stroke per revolution, so that due to the gear effect of the ball screw 66 via the hollow shaft servo motor 62 only relatively small forces in the X direction can be applied.
  • a weight compensating device 72 which acts linearly here is provided for weight compensation for the carriages 14 and 18 and the components attached thereto, one end of which is supported centrally on the base frame 16 by a welding frame 74 fastened to the base frame 16 while the other end of the counterbalancing device 72 is centrally connected to the Z-carriage 14 via a bearing block 76 mounted on the Z-carriage 14.
  • the weight balancer 72 is a gas tension spring arranged in parallel relationship with the hollow shaft servomotor 60 for the Z carriage 14.
  • a pneumatic cylinder is conceivable, which can be acted upon via a pressure regulator optionally with pressure to brake the carriage 14 and 18 according to the respective requirements variably or to hold.
  • FIGS. 5 to 8 show details of the additional processing device 28, the housing 46 of which has a stop surface 80 on the left-hand end in FIG. 5, with which the additional processing device 28, when mounted on the X-carriage 18, is shown in FIG Stop surface 82 on the X-carriage 18 comes to rest in order to position the additional processing device 28 defined in the X direction on the X-carriage 18.
  • the additional processing device 28 has a pivot mechanism 84, by means of which the further edge processing tools 30 can be pivoted from their parking position shown in FIG. 7 into the processing position shown in FIG.
  • the pivoting mechanism 84 has a pivoting lever 86 which is pivotally mounted at one end to the right upper corner of the substantially cuboidal housing 46 in FIGS. 7 and 8 about a pivot axis S extending in the Z-direction.
  • the pivot lever 86 is formed as shown in FIG. 7 for receiving a rotary drive 88 for the other edge processing tools 30 which is flanged to the pivot lever 86 via a drive housing 90.
  • the axis of rotation D of the rotary drive 88 which may be an electrically or pneumatically driven motor, is perpendicular to the pivot axis 5.
  • a linear pivot drive 92 with its one end, while the other end of the pivot drive 92 substantially centrally on the left in Figs. 5, 7 and 8 wall of the housing 46 of the additional Machining device 28 is articulated.
  • the rotary drive 92 is a pneumatic cylinder, whose cylinder housing 94 on the housing 46 of the additional processing device 28 and the length-adjustable Piston rod 96 is pivotally mounted on the pivot lever 86.
  • piston rod 96 by taking place via connections 98, optionally opposing pressurization of the recorded in the cylinder housing 94 piston from the cylinder housing 94 and retracted to the pivot lever 86 through an opening 100 in the housing 46 of the additional processing device 28 from the Park position in the machining position and vice versa to pivot.
  • an arm 102 is mounted on the pivoting lever 86, which end carries a shock absorber 104 whose housing is adjustable in length and / or adjustable on the arm 102.
  • the shock absorber 104 can come into contact with a pivoting of the pivot lever 86 from the parking position into the machining position with a provided on the housing 46 of the additional processing device 28 stop surface 106.
  • As the processing position of the pivot lever 86 together with the stop surface 106 determining end stop is a screwed onto the housing of the shock absorber 104 threaded sleeve 108. From Fig.
  • shock absorber 104 projects in the parking position of the pivot lever 86 from the threaded sleeve 108, so the shock absorber 104 upon pivoting of the pivot lever 86 in the machining position can damp the stop of the threaded sleeve 108 on the stop surface 106.
  • an angle head 110 is flanged to the drive housing 90 having two interconnected bore portions 112 and 114, whose central axes form a right angle.
  • the bore portion 112 projects into a shaft 116 of the rotary drive 88, which is provided at the end with a bevel gear 118.
  • the bevel gear 118 meshes with a bevel gear 120 of equal diameter, which at one end of a in the bore portion 114 rotatably mounted shaft 122 is mounted.
  • the fixed bearing 124 of the shaft 122 is clamped by means of a screwed into a threaded portion 126 of the bore portion 114 ring member 128 against an annular shoulder 130 of the bore portion 114.
  • the two loose bearings 132 of the shaft 122 are clamped by means of a screwed onto a bevel gear side threaded portion 134 of the shaft 122 shaft nut 136 via a spacer sleeve 138 with the fixed bearing 124.
  • the shaft 122 finally extends sealed by a sealing element 140 on the ring member 128 therethrough.
  • a tool holder 142 rotationally driven by the rotary drive 88 about the rotation axis C 2 of the shaft 122 via the shaft 116, the bevel gear pair 118, 120 and the shaft 122 is mounted for the further edge processing tools 30.
  • the axis of rotation C 2 of the other edge processing tools 30 at a right angle to the axis of rotation D of the rotary drive 88 and parallel to the axis of rotation C 1 of the first edge processing tool 22 and thus parallel to the axis of rotation R of the optical lens L extends , Further, as is apparent from a comparison of FIGS.
  • the further edge processing tools 30 can be pivoted by means of the pivoting mechanism 84 from the parking position virtually around the tool spindle 20 and the first edge processing tool 22 into the processing position in which the axes of rotation C 1 and C 2 of the tools 22, 30 and the axis of rotation R of the optical lens L lie in a plane extending parallel to a plane spanned by the X and Z directions.
  • the tool holder 142 has a first clamping mechanism 144 for radially clamping one of the other edge processing tools 30 and a second clamping mechanism independent therefrom 146 for axially clamping at least one other of the other edge processing tools 30, as will be described in conclusion.
  • the first clamping mechanism 144 has a collet 148, the outer peripheral side has a key surface portion 152, a conical surface portion 154 and a threaded portion 156 starting from its lower in Fig. 6, provided with a longitudinal slot 150 end and is provided on the inner peripheral side with a bore for receiving of the here designed as a finger milling cutter 158 further edge processing tool 30 is used. From Fig. 6 it is seen that when screwing the threaded portion 156 of the collet 148 in a counter-threaded portion of a base 160 of the tool holder 142 of the conical surface portion 154 of the collet 148 comes to a conical counter surface on the inner periphery of the body 160 to the plant.
  • the second clamping mechanism 146 is formed by an annular shoulder 162 on the base body 160, optionally spacers 164 and a threaded ring 166 which can be screwed on the inner circumference with a threaded portion on an outer peripheral side counter-threaded portion on the bottom in FIG. It can be seen that one or more further edge processing tools 30, in the illustrated embodiment, a sintered diamond disk 168, which is disposed between the spacers 164, axially tensioned can be by the / from the spacers 164 and the diamond disc 168 existing sandwich or package is tightened by screwing the threaded ring 166 on the counter-threaded portion of the base 160 against the annular shoulder 162 of the body 160.
  • the spacers 164 are formed in the present case as grinding wheels, ie the outer peripheral side are provided with grinding wheels 170 which form a conical outer peripheral surface.
  • the grinding wheels 170 bevels can be mounted on the edge of the optical lens L.
  • holes, grooves, grooves and / or chamfers may be mounted in the peripheral region of the optical lens L with only little setup effort by means of the described peripheral processing tools 30.
  • rotating tools and cutting heads for laser or water jet cutting are conceivable as further edge processing tools that could be attached to the pivot lever 86.
  • the invention provides that an additional processing device is attached to the X-carriage, which has at least one further edge processing tool, which is movable from a parking position into a processing position between the lens and the edge processing tool on the tool spindle.

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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)
  • Projection-Type Copiers In General (AREA)

Claims (10)

  1. Dispositif d'usinage de bords d'une lentille optique (L), notamment d'un verre de lunettes, qui peut être enserrée entre deux arbres de maintien (10, 12) alignés de manière rotative autour d'un axe de rotation (R) d'une pièce à usiner, comprenant un premier chariot (14) qui est guidé en déplacement longitudinal sur un châssis de base (16) dans une première direction (Z) parallèle à l'axe de rotation (R) d'une pièce à usiner, et un deuxième chariot (18) muni d'une broche d'outil (20) avec un outil d'usinage de bords (22) pour la lentille optique (L), chariot qui est guidé en déplacement longitudinal dans une deuxième direction (X) perpendiculaire à la première direction (Z) de sorte que l'outil d'usinage de bords (22) puisse être amené en contact d'usinage avec la lentille optique (L), caractérisé en ce que sur le deuxième chariot (18) un dispositif d'usinage (28) supplémentaire est monté présentant au moins un autre outil d'usinage de bords (30) pour la lentille optique (L) qui est déplaçable sur la broche d'outil (20) d'une position de repos dans une position d'usinage entre la lentille optique (L) et l'outil d'usinage de bords (22).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif d'usinage (28) supplémentaire présente un carter (46) bridé sur le deuxième chariot (18).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'usinage (28) supplémentaire présente un mécanisme de pivotement (84) permettant de faire pivoter l'autre outil d'usinage de bords (30) de la position de repos dans la position d'usinage.
  4. Dispositif selon la revendication 3, caractérisé en ce que le mécanisme de pivotement (84) présente un levier de pivotement (86) logé sur le carter (46) ainsi qu'un entraînement de pivotement (92) linéaire qui est articulé par une extrémité sur le carter (46) et par son autre extrémité sur le levier de pivotement (86), l'entraînement de pivotement (92) linéaire étant de préférence un vérin pneumatique.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'autre outil d'usinage de bords (30) est entraîné en rotation autour d'un axe de rotation (C2) au moyen d'un entraînement de rotation (88).
  6. Dispositif selon la revendication 5, caractérisé en ce que l'autre outil d'usinage des bords rotatif (30) est un foret ou une fraise à queue (158) pour former des alésages ou des rainures dans la région de bord du verre de lunettes.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que l'axe de rotation (C2) de l'autre outil d'usinage de bords (30) s'étend parallèlement à l'axe de rotation (C1) de l'outil d'usinage de bords (22) prévu sur la broche d'outil (20).
  8. Dispositif selon l'une quelconque des revendications 5 à 7, caractérisé en ce que l'entraînement de rotation (88) pour l'autre outil d'usinage de bords (30) est monté sur le levier de pivotement (86), l'axe de rotation (D) de l'entraînement de rotation (88) s'étendant perpendiculairement à l'axe de rotation (C2) de l'autre outil d'usinage de bords (30).
  9. Dispositif selon l'une quelconque des revendications 5 à 8, caractérisé en ce que le dispositif d'usinage (28) supplémentaire présente un logement d'outil (142) entraîné en rotation au moyen de l'entraînement de rotation (88) et comprenant un premier mécanisme de serrage (144) pour le serrage radial d'un outil d'usinage de bords ainsi qu'un deuxième mécanisme de serrage (146) pour le serrage axial d'au moins un outil d'usinage de bords.
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la première direction (Z) s'étend verticalement tandis que la deuxième direction (X) s'étend horizontalement.
EP05022730A 2001-03-22 2002-03-16 Dispositif pour l'usinage des bords de lentilles ophtalmiques Expired - Lifetime EP1616663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10114239A DE10114239A1 (de) 2001-03-22 2001-03-22 Vorrichtung zur Randbearbeitung von optischen Linsen
EP02006026A EP1243380B1 (fr) 2001-03-22 2002-03-16 Dispositif pour l'usinage des bords de lentilles ophtalmiques

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EP02006026A Division EP1243380B1 (fr) 2001-03-22 2002-03-16 Dispositif pour l'usinage des bords de lentilles ophtalmiques

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EP1616663A1 EP1616663A1 (fr) 2006-01-18
EP1616663B1 true EP1616663B1 (fr) 2006-08-30

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EP05022730A Expired - Lifetime EP1616663B1 (fr) 2001-03-22 2002-03-16 Dispositif pour l'usinage des bords de lentilles ophtalmiques
EP02006026A Expired - Lifetime EP1243380B1 (fr) 2001-03-22 2002-03-16 Dispositif pour l'usinage des bords de lentilles ophtalmiques

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EP (2) EP1616663B1 (fr)
AT (2) ATE307007T1 (fr)
DE (3) DE10114239A1 (fr)
ES (2) ES2271932T3 (fr)

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CN112935999B (zh) * 2021-03-30 2024-09-27 福州富兰光学仪器有限公司 一种光学镜片的抛光装置及其使用方法
DE102021004831A1 (de) 2021-09-24 2023-03-30 Satisloh Ag Verfahren zur spanenden bearbeitung von optischen werkstücken, insbesondere brillenlinsen aus kunststoff
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CN114227453B (zh) * 2021-12-13 2022-09-13 浙江博秦精密工业有限公司 一种电脑后盖用高效成型装置及成型方法
CN114619527A (zh) * 2022-04-02 2022-06-14 江苏百欧货架有限公司 一种木制品加工用装置及其加工方法
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CN115319576B (zh) * 2022-10-14 2023-01-24 诸城市顺德机械有限责任公司 一种汽车配件加工用打磨装置
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DE10114239A1 (de) 2002-10-02
US20020168920A1 (en) 2002-11-14
DE50204570D1 (de) 2006-03-02
DE50208035D1 (de) 2006-10-12
EP1243380A3 (fr) 2003-10-15
US6712671B2 (en) 2004-03-30
ES2250532T3 (es) 2006-04-16
ATE337889T1 (de) 2006-09-15
EP1243380B1 (fr) 2005-10-19
EP1243380A2 (fr) 2002-09-25
ES2271932T3 (es) 2007-04-16
ATE307007T1 (de) 2005-11-15
EP1616663A1 (fr) 2006-01-18

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