EP2011603B2 - Machine destinée au traitement de pièces optiques, en particulier de verres solaires en plastique - Google Patents

Machine destinée au traitement de pièces optiques, en particulier de verres solaires en plastique Download PDF

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Publication number
EP2011603B2
EP2011603B2 EP08010854.1A EP08010854A EP2011603B2 EP 2011603 B2 EP2011603 B2 EP 2011603B2 EP 08010854 A EP08010854 A EP 08010854A EP 2011603 B2 EP2011603 B2 EP 2011603B2
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EP
European Patent Office
Prior art keywords
machine
work piece
drive unit
spindle
axis
Prior art date
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Active
Application number
EP08010854.1A
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German (de)
English (en)
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EP2011603B1 (fr
EP2011603A1 (fr
Inventor
Holger Schäfer
Steffen Wallendorf
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Satisloh AG
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Satisloh AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/0031—Machines having several working posts; Feeding and manipulating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/086—Hood encased cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5124—Plural diverse manufacturing apparatus including means for metal shaping or assembling with means to feed work intermittently from one tool station to another
    • Y10T29/5127—Blank turret
    • Y10T29/5128—Rotary work - vertical axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5124—Plural diverse manufacturing apparatus including means for metal shaping or assembling with means to feed work intermittently from one tool station to another
    • Y10T29/5127—Blank turret
    • Y10T29/5129—Rotary work - horizontal axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/30392—Milling with means to protect operative or machine [e.g., guard, safety device, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305264—Multiple work stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/30532—Milling including means to infeed work to cutter with means to advance work or product
    • Y10T409/305432—Endless or orbital work or product advancing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305544—Milling including means to infeed work to cutter with work holder
    • Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
    • Y10T409/305768—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation with linear movement of work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305544—Milling including means to infeed work to cutter with work holder
    • Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
    • Y10T409/305824—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation with angular movement of work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2514—Lathe with work feeder or remover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2524—Multiple
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2566—Bed

Definitions

  • the present invention relates to a machine for processing optical workpieces according to the preamble of claim 1.
  • the invention relates to the industrial processing of prescription surfaces on lenses of plastics such as polycarbonate, CR39 and so-called "high index" materials.
  • plastic injection-molded spectacle lens blank also called a blank
  • a plastic injection-molded spectacle lens blank also called a blank
  • the generally concave interior or prescription surfaces are machined to have a spherical, aspherical, toric, atorical, progressive, or free-form geometry (e.g., progressive power), depending on the desired optical effect.
  • the typical conventional process in inner surface working after blocking the lens blank with its outer surface on a block piece, provides a milling or turning process for producing the optically active form, usually followed by a finish grinding or polishing process to achieve the necessary surface finish.
  • a series-working combined milling-turning machine which generally has the following components: A workpiece spindle, by means of which the workpiece is rotatably driven about a workpiece axis of rotation, at least one machining unit having a tool by means of which on the Workpiece spindle held workpiece machinable, and an adjusting mechanism for generating a relative movement between the workpiece spindle and the tool to allow either a loading / unloading or machining of the workpiece.
  • the prior art machine has on a side of a working space in parallel arrangement a milling processing unit with a milling spindle and a turning processing unit with two fast tool arrangements, wherein the provided on the opposite side of the working space adjustment mechanism by a workpiece spindle supporting the cross table assembly is formed, by means of which the workpiece held on the workpiece workpiece can be moved on the one hand parallel to the processing units (X-axis) and on the other hand to these from or away from them (Y-axis).
  • VFT Ultra marketed by Satisloh AG
  • a machine according to the preamble of claim 1 is known from DE-A-197 51 750 known.
  • the invention has for its object to provide a compact machine for machining of optical workpieces, in particular of plastic spectacle lenses, in which in particular the working space as easy as possible encapsulate or seal.
  • the adjusting mechanism comprises a linear drive unit and a pivot drive unit on which the linear drive unit is arranged, wherein the linear axis Y substantially perpendicular to the pivot axis A and substantially parallel to Workpiece rotation axis B extends, wherein by means of the pivot drive unit, the workpiece from a processing unit to the next processing unit is movable and wherein it is at least one processing unit to a turning unit with a fast tool arrangement, by means of the tool in respect to the pivot axis radial direction is movable.
  • linear axis Y is substantially perpendicular to the pivot axis A and substantially parallel to the workpiece axis of rotation B, in view of the number of degrees of freedom of movement on the workpiece advantageous because it allows the modular construction of a machine with a variety of processing units with minimal effort.
  • the pivot drive unit in comparison to the previously known linear drive unit can be much easier "seal", i. the not in the working space of the machine above components of the swivel drive unit can be easily separated from the working space or encapsulate, such as by means of suitable rotary joints seals with commercial lip seal profiles measures for Sperrluftbeetzschung etc., which is also common that they are very wear and low friction can be.
  • the machine according to the invention builds very compact due to the stacked arrangement of the linear drive unit on the swivel drive unit; long travels, as required in the above prior art in the X-axis, to be able to approach the individual processing units, are not present. This also leads to an acceleration of the processing, namely a shortening of the processing overhead times, because the moving machine components on the workpiece side compared to the above prior art have to travel shorter distances.
  • the superimposition of the linear drive unit on the pivot drive unit makes it possible to arrange the respective guides very close to each other, resulting in a high rigidity of the adjustment mechanism. This is also beneficial for a high quality of processing.
  • the machine concept according to the invention allows a very flexible modular construction of the machine, in which the respective processing requirements according to processing units, handling units, measuring stations, etc. can be selected in the manner of a kit and grouped around the adjustment mechanism around.
  • the machine concept according to the invention is advantageous from an ergonomic point of view; The individual machine components can be easily arranged so that they are easily accessible for assembly, maintenance and set-up operations.
  • linear drive unit is arranged on the swivel drive unit on the one hand makes the machine concept more flexible with regard to the possible machine configuration stages; On the other hand, a smaller installation space is required for the adjusting mechanism and the linear drive unit can be sealed more easily.
  • the workpiece spindle is controlled in the rotation angle by means of the pivot drive unit, i. angular position controlled about the pivot axis A is pivotable.
  • the pivot drive unit mainly serves the workpiece change, as described above, it may be sufficient to provide instead of a CNC controlled pivot axis A only a not controlled in the rotation angle pivoting possibility of the workpiece spindle on end stops.
  • the pivot drive unit may have a pivot table, are mounted on the parallel guide rails for a Y-carriage of the linear drive unit, wherein between the guide rails, a linear motor is arranged, by means of which the Y-carriage is movable relative to the pivot table ,
  • a linear motor is arranged, by means of which the Y-carriage is movable relative to the pivot table .
  • the pivot drive unit for generating the pivoting movement about the pivot axis A has a torque motor. This makes a gear in the generation of the pivoting dispensable, so that no gear (reversal) play can occur, whereby a high and reproducible accuracy of the pivoting movements of the workpiece spindle about the pivot axis A and thus the angle adjustment is achieved.
  • the machine concept according to the invention is flexible, it being possible for one of the processing units to be a milling-processing unit with a tool spindle.
  • the adjusting mechanism carrying the workpiece spindle is arranged at a central location in the machine frame, while the at least two processing units, a loading / unloading station for loading / unloading workpieces and at least one further unit or station are star-like - e.g. cross, X or Y-shaped or also with respect to the pivot axis A unevenly angularly spaced - are arranged around the adjusting mechanism, the latter, i. the at least one further unit or station is selected from a group comprising the following units or stations: a turning processing unit with a fast tool arrangement, a milling processing unit with a tool spindle, an engraving station for applying a marking to the workpiece and a measuring station for measuring the workpiece.
  • the fast tool arrangements may be e.g. be driven so that the one fast tool assembly rotates the rotating workpiece with reciprocating movements (F1 axis), while the other fast tool arrangement oscillates in relation to the pivot axis A in opposite directions to the first Fast tool arrangement to prevent excessive vibration excitation of the machine frame by vibration compensation.
  • direction of action F1 (F2) of the fast tool arrangement of the at least one rotary machining unit with respect to a plane which is substantially perpendicular to the pivot axis A is inclined such that the fast tool arrangement of the Adjusting seen from radially outward falls.
  • the measure of the feed movement of the workpiece spindle in the direction of its axis (Y-axis in the first alternative according to the invention) and thus the achieved height compensation between the workpiece rotation axis B and the operating point of the cutting tool cutting edge takes place here in accordance with the sine function of the predetermined angle between the pivot axis A perpendicular plane and the direction of action F1 (F2) of the fast tool arrangement.
  • the inclination of the fast tool assembly is such that the latter falls radially outward as seen from the adjustment mechanism, has the advantage that the turning tool when switching off the energization of the fast tool assembly in a respect to the working space of the machine withdrawn position can run back and there remains in the de-energized state of the fast tool assembly, so that the risk is reduced that the operator of the machine in any set-up work or the like. injured in the working space of the machine at the very sharp turning cutting edge.
  • a cover hood can be attached to a swivel table of the swivel drive unit, which at the same time covers the workpiece spindle and the linear drive unit, so that advantageously no separate sealing and / or protective measures are required here.
  • the cover an opening have, through which the workpiece spindle movably extends, wherein between a inner periphery of the opening and an outer periphery of the workpiece spindle, a rolling bellows is arranged, which seals the interior of the cover against the working space of the machine.
  • a rolling bellows is inexpensive, seals reliably, is not susceptible to wear and sets the linear movements of the workpiece spindle even a very low resistance.
  • the workpiece spindle has an aerostatic bearing.
  • the exhaust air of such storage serves as a barrier air at the same time, which prevents cooling lubricant or the like. from the working space of the machine can penetrate through any existing gaps or cracks in the cover or the workpiece spindle.
  • a machine frame pivotable machine head which limits the working space of the machine together with the machine frame, wherein the machine upper part has a lower, substantially annular cylindrical edge, the form-fitting in the closed state of the machine shell in an associated , engages substantially annular recess in the machine frame.
  • the machine frame may preferably be made of monolithic polymer concrete - also known as mineral casting.
  • This material which is a composite material consisting of a mineral filler mixture and a reactive resin based binder, has i.a. a high mass and a low coefficient of thermal expansion is very stiff and has very good damping properties, which is particularly in the case of using a rotary machining unit with a fast tool arrangement is advantageous to prevent from the Fast Tool Arrangement generated vibrations disturbing the machine frame on the adjustment and thus the workpiece spindle are transmitted.
  • the adjusting mechanism 26 has a linear drive unit 28 and a pivot drive unit 30 (see Fig. 3 to 6 ), which are arranged on each other, wherein the workpiece spindle 12 is pivotable about a pivot axis A by means of the pivot drive unit 30, which is substantially perpendicular to the workpiece axis of rotation B, while the workpiece spindle 12 by means of the linear drive unit 28 along a linear axis Y is movable in the essentially perpendicular to the pivot axis A and substantially parallel to the workpiece axis of rotation B.
  • the machine 10 has a monolithic molded polymer concrete machine frame 32, which is provided starting from its upper side 34 in the middle with a ring trough-like recess 36 which defines a working space 38 of the machine 10 down and laterally.
  • a bearing eye 40 is provided for the adjusting mechanism 26.
  • Fig. 2 are also two with respect to the bearing eye 40 diametrically opposite drains 42 for the coolant and chip disposal in the bottom of the recess 36 can be seen.
  • Around the recess 36 around a plurality of flange surfaces 44 are embedded in the machine frame 32 in a star-like arrangement starting from the top 34, which serve to mount the processing units 14, 16, 22 and other units or stations, which will be described below.
  • the Fig. 1 and 2 still show a laterally mounted on the machine frame 32 transport device 46 for the transport of work boxes 48 in which to be processed / processed lenses L are transported.
  • a control cabinet 50 is mounted on the machine frame 32, which contains the required control and supply modules.
  • the linear drive unit 28 is arranged on the pivot drive unit 30.
  • the latter is mounted in the bearing eye 40 of the machine frame 32 by means of a two-part bearing flange 52, which has a lower part 54 and an upper part 56.
  • the pivot drive unit 30 has a torque motor 58, which - like all other main drives of the machine 10 also - is water cooled (not shown in detail) and serves to pivot the workpiece spindle 12 in the rotation angle CNC-controlled about the pivot axis A.
  • the stator 60 of the torque motor 58 is fixed in the lower part 54 of the bearing flange 52, while the rotor 62 of the torque motor 58 by means of a combined axial-radial needle bearing assembly 64 is rotatably mounted in the lower part 54 of the bearing flange 52.
  • an aerodynamic or hydrostatic bearing of the rotor 62 could also be provided.
  • annular measuring system 66 is further provided which surrounds the rotor 62 of the torque motor 58 and by means of which the angular position of the rotor 62 with respect to the stator 60 for the angular position control of the torque motor 58 can be detected.
  • a hollow shaft encoder could be considered.
  • a Sperrluftbeaufschlagung done here (not shown in detail), which also prevents coolant enters the rotary drive unit 30.
  • FIG. 5 and 6 further show that two guide rails 72 for a Y-carriage 74 of the linear drive unit 28 are mounted on the turntable 68 in a parallel arrangement.
  • the Y-carriage 74 is slidably guided by means of a total of four carriages 76 on the guide rails 72, in a large spatial proximity to the axial-radial needle bearing arrangement 64 of the pivot drive unit 30th
  • a linear motor 78 is arranged, by means of which the Y-carriage 74 relative to the turntable 68 is movable or adjustable, namely CNC-position-controlled in both directions of the Y-axis (the associated measuring system is not to simplify the illustration shown). While the stator 80 of the linear motor 78 is fixed to the turntable 68, the rotor 82 of the linear motor 78 is mounted on the Y-carriage 74, on which in turn the workpiece spindle 12 is mounted.
  • the workpiece spindle 12 is known per se and therefore need not be further described at this point. It should be mentioned only that the workpiece spindle 12 has an aerostatic bearing (not shown in detail), the exhaust air advantageously contributes to the sealing against the working space 38, and with a double-acting piston-cylinder assembly 84 is provided for the operation of a collet 86 (see Fig. 5 ), by means of which on a block piece (not shown) blocked spectacle lens L can be clamped to the workpiece spindle 12. Finally, with the aid of the electric motor 88 of the workpiece spindle 12, the spectacle lens L can be rotationally driven in the angular position by means of the workpiece rotation axis B (the associated position measuring system is again not shown to simplify the illustration).
  • a cover hood 90 is attached, which covers both the workpiece spindle 12 and the linear drive unit 28, wherein the interior 92 of the cover 90 by means of sealing profiles 94 which between the cover 90 and the pivot table 68th are arranged opposite the working space 38 of the machine 10 is sealed.
  • the cover 90 On the in Fig. 5 On the right side, the cover 90 has an opening 96, through which the workpiece spindle 12 extends movably, so that the collet 86 with the spectacle lens L stretched in it is located in the working space 38 of the machine 10.
  • a rolling bellows 98 is finally arranged, which is suitably attached to the workpiece spindle 12 and cover 90 and (also) serves to seal the interior 92 of the cover 90 relative to the working space 38 of the machine 10 ,
  • FIG. 1 and 2 Now show various units or stations that are arranged in a star-like manner around the provided at a central location in the machine frame 32, the workpiece spindle 12 supporting adjusting mechanism 26 around.
  • the workpiece spindle 12 of the rotary processing unit 14 opposite.
  • the rotary processing unit 16 On the relative to the adjusting mechanism 26 diametrically opposite side of the machine frame 32 is the rotary processing unit 16, so that the effective directions F1, F2 arranged in opposite positions Fast tool assemblies 18, 20 and the pivot axis A substantially in one plane lie, which can be used by suitable control of the fast tool assemblies 18, 20 for vibration compensation.
  • the internal structure and function of the fast tool assemblies 18, 20 shown here are in the EP-A-1 779 967 described in detail, which is hereby incorporated by reference to avoid repetition.
  • flange 44 extend for the Fast tool assemblies 18, 20 obliquely, so that they fall off starting from the working space 38 of the machine 10 radially outward.
  • Sense and purpose of the inclination are in the EP-A-1 719 585 described in detail, which is also incorporated herein by reference to avoid repetition.
  • the loading / unloading station 100 has a loading mechanism 102 adapted in terms of its degrees of freedom of movement and grasping capabilities Remove lens L from a work box 48 and, after opening a door 104 provided on the machine frame 32, move it into the working space 38 of the machine 10 to tension the blocked lens L on the workpiece spindle 12, and vice versa.
  • the lenses L could, if desired or required, but also other means are used, for example, a laser or engraving stylus, which is similar to a stylus mounted aerostatically and driven by a voice coil drive The latter could also be dimensioned significantly smaller than the fast tool arrangements 18, 20 shown here.
  • a device could be mounted approximately on the still free flange surface 44 of the machine frame 32 (see FIG Fig. 1 , front left or Fig. 2 , bottom left).
  • a measuring station 106 for measuring the lenses L may be a known form sensor, by means of which the lens L can be measured in situ. Also conceivable are devices for non-contact, eg optical measurement of the lenses L. If such a measuring station 106 is present, the machine 10 - namely their rotary processing units 14, 16 - be automatically calibrated, as in EP-A-1 719 584 described in detail.
  • An additional cribbing spindle with a milling tool projecting into the working space 38 could also be provided on the machine frame 32 for the edge (s) of the spectacle lenses L (not shown), whose axis of rotation would preferably lie in the same plane as the workpiece axis of rotation B. , like from the EP-A-1 719 573 known.
  • Fig. 7 to 10 Further details of the encapsulation of the working space 38 of the machine 10 are the Fig. 7 to 10 refer to.
  • Fig. 7 At the front, 108 denotes a sliding door, which is suitably guided on the machine frame 32 and can be lowered into it (see the US Pat Fig. 9 and 10 ) to allow an operator to access the workspace 38 of the machine 10.
  • patch and attached covers 110 cover in particular the rotary processing unit 14 and the measuring station 106 from; between the latter and the working space 38 can also be an optional door to sit open to protect the measuring station 106 (not shown).
  • a control panel 112 with integrated screen is on in the Fig. 7 . 8th and 10 left cover 110 is arranged.
  • the machine 10 has a machine upper part 114, which is hinged by means of hinges 116 in the area of the control cabinet 50 with respect to the machine frame 32, between a lower, closed position (FIG. Fig. 7 and 9 ), in which the working space 38 of the machine 10 is hermetically sealed, and an upper, open position (FIG. Fig. 10 ).
  • the machine head 114 has an elliptical viewing window 118, which allows the operator in the closed position of the machine head 114 a clear view into the working space 38 of the machine 10.
  • the oblique installation of the viewing window 118 ensures a targeted drainage of the during the processing of the inside against the viewing window 118 splashing cooling lubricant.
  • the machine head 114 finally has a lower, substantially annular cylindrical edge 120, which in accordance with Fig. 8 in the closed state of the machine head 114 positively engages in an associated, substantially annular recess 122 in the machine frame 32.
  • a circumferential seal 124 can be arranged between the edge 120 of the machine upper part 114 and the associated recess 122 in the machine frame 32 (see FIG Fig. 8 ).
  • a machine for processing optical workpieces according to claim 1 is disclosed. As a result, a very compact machine is created in which, in particular, the working space can be very easily encapsulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Milling Processes (AREA)
  • Eyeglasses (AREA)
  • Optical Filters (AREA)
  • Machine Tool Units (AREA)

Claims (13)

  1. Machine (10) pour l'usinage de pièces d'oeuvre optiques (L), notamment de verres de lunettes en matériau synthétique, comprenant
    une broche porte-pièce (12) au moyen de laquelle la pièce d'oeuvre (L) peut être entraînée en rotation autour d'un axe de rotation de pièce d'oeuvre (B),
    au moins deux unités d'usinage (14, 16, 22), qui présentent un outil (19, 21, 25) au moyen duquel la pièce d'oeuvre (L), maintenue sur la broche porte-pièce (12), peut être usinée par enlèvement de copeaux, et
    un mécanisme de déplacement (26) pour produire un mouvement relatif entre la broche porte-pièce (12) et l'outil (19, 21, 25), en vue de permettre sélectivement un chargement/déchargement ou un usinage de la pièce d'oeuvre (L), le mécanisme de déplacement (26) comprenant une unité d'entraînement linéaire (28), à l'aide de laquelle il est possible de déplacer la broche porte-pièce (12) le long d'un axe linéaire (Y), et une unité d'entraînement de pivotement (30) à l'aide de laquelle la broche porte-pièce (12) peut pivoter autour d'un axe de pivotement (A) se trouvant sensiblement dans une position perpendiculaire à l'axe de rotation de pièce d'oeuvre (B),
    caractérisée en ce que l'unité d'entraînement linéaire (28) est agencée sur l'unité d'entraînement de pivotement (30), l'axe linéaire (Y) s'étendant sensiblement de manière perpendiculaire à l'axe de pivotement (A) et sensiblement de manière parallèle à l'axe de rotation de pièce d'oeuvre (B),
    en ce que au moyen de l'unité d'entraînement de pivotement (30) la pièce d'oeuvre (L) peut être déplacée d'une unité d'usinage jusqu'à l'unité d'usinage suivante et
    en ce que concernant au moins une unité d'usinage il s'agit d'une unité d'usinage par tournage (14, 16) avec un agencement d'outil rapide (18, 20), au moyen de laquelle l'outil (19, 21) peut être déplacé dans une direction radiale par rapport à l'axe de pivotement (A).
  2. Machine (10) selon la revendication 1, caractérisée en ce que la broche porte-pièce (12) peut pivoter autour de l'axe de pivotement (A), selon un mode à angle de rotation régulé, au moyen de l'unité d'entraînement de pivotement (30).
  3. Machine (10) selon la revendication 1 ou la revendication 2, caractérisée en ce que l'unité d'entraînement de pivotement (30) comprend une table de pivotement (68) sur laquelle sont montées des glissières de guidage (72) parallèles pour un chariot-Y (74) de l'unité d'entraînement linéaire (28), et entre les glissières de guidage (72) est agencé un moteur linéaire (78) au moyen duquel le chariot-Y (74) peut être déplacé par rapport à la table de pivotement (68).
  4. Machine (10) selon l'une des revendications précédentes, caractérisée en ce que l'unité d'entraînement de pivotement (30) présente un moteur-couple (58).
  5. Machine (10) selon l'une des revendications précédentes, caractérisée en ce que concernant une des unités d'usinage (14, 16, 22), il s'agit d'une unité d'usinage par fraisage (22) comprenant une broche porte-outil (24).
  6. Machine (10) selon l'une des revendications 1 à 4, caractérisée en ce que le mécanisme de déplacement (26), qui supporte la broche porte-pièce (12), est agencé en position centrale dans un bâti de machine (32), tandis que les au moins deux unités d'usinage (14, 16, 22), un poste de chargement/déchargement (100) pour le chargement/déchargement de pièces d'oeuvre (L), et au moins une autre unité ou un autre poste sont agencés en étoile autour du mécanisme de déplacement (26), cette autre unité ou cet autre poste étant choisi parmi un groupe qui comprend les unités ou postes suivants : une unité d'usinage par tournage (14, 16) comprenant un agencement d'outil rapide (18, 20), une unité d'usinage par fraisage (22) comprenant une broche porte-outil (24), un poste à graver pour réaliser un marquage sur la pièce d'oeuvre (L), et un poste de mesure (106) pour mesurer la pièce d'oeuvre (L).
  7. Machine (10) selon l'une des revendications 1 à 4, caractérisée en ce que sont prévues, en guise d'unités d'usinage, deux unités d'usinage par tournage (14, 16) comprenant chacune un agencement d'outil rapide (18, 20), lesquelles sont agencées selon des positions mutuellement opposées l'une à l'autre par rapport au mécanisme de déplacement (26), de sorte que les directions d'action (F1, F2) des agencements d'outil rapide (18, 20) et l'axe de pivotement (A) sont sensiblement situés dans un même plan.
  8. Machine (10) selon l'une des revendications précédentes, caractérisée en ce que la direction d'action (F1, F2) de l'agencement d'outil rapide (18, 20) de la au moins une unité d'usinage par tournage (14, 16), est inclinée par rapport à un plan, qui s'étend sensiblement de manière perpendiculaire à l'axe de pivotement (A), de façon telle que l'agencement d'outil rapide (18, 20) soit orienté vers le bas radialement vers l'extérieur, vu à partir du mécanisme de déplacement (26).
  9. Machine (10) selon l'une des revendications précédentes, caractérisée en ce que sur une table de pivotement (68) de l'unité d'entraînement de pivotement (30), est rapporté un capot de protection (90), qui couvre simultanément la broche porte-pièce (12) et l'unité d'entraînement linéaire (28).
  10. Machine (10) selon la revendication 9, caractérisée en ce que le capot de protection (90) présente une ouverture (96) à travers laquelle s'étend de manière mobile la broche porte-pièce (12), et entre un pourtour intérieur de l'ouverture (96) et un pourtour extérieur de la broche porte-pièce (12) est agencé un soufflet (98) qui assure l'étanchéité de l'intérieur (92) du capot de protection (90) par rapport à un espace de travail (38) de la machine (10).
  11. Machine (10) selon l'une des revendications précédentes, caractérisée en ce que la broche porte-pièce (12) présente un montage de palier aérostatique.
  12. Machine (10) selon l'une des revendications précédentes, caractérisée par une partie supérieure de machine (114) pouvant pivoter par rapport à un bâti de machine (32) et définissant, en commun avec le bâti de machine (32), un espace de travail (38) de la machine (10), la partie supérieure de machine (114) présentant un bord inférieur (120) sensiblement de forme annulaire cylindrique, qui, dans l'état fermé de la partie supérieure de machine (114), s'engage par complémentarité de formes dans un évidement (122) de forme sensiblement annulaire dans le bâti de machine (32).
  13. Machine (10) selon l'une des revendications précédentes, caractérisée par un bâti de machine (32) de configuration monolithique, en béton-polymère.
EP08010854.1A 2007-07-06 2008-06-14 Machine destinée au traitement de pièces optiques, en particulier de verres solaires en plastique Active EP2011603B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007031703A DE102007031703A1 (de) 2007-07-06 2007-07-06 Maschine zur Bearbeitung von optischen Werkstücken, insbesondere von Kunststoff-Brillengläsern

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EP2011603A1 EP2011603A1 (fr) 2009-01-07
EP2011603B1 EP2011603B1 (fr) 2010-05-26
EP2011603B2 true EP2011603B2 (fr) 2014-07-30

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US (1) US7975356B2 (fr)
EP (1) EP2011603B2 (fr)
JP (1) JP5198957B2 (fr)
CN (1) CN101337281B (fr)
AT (1) ATE468939T1 (fr)
BR (1) BRPI0803511B1 (fr)
DE (2) DE102007031703A1 (fr)
ES (1) ES2345575T5 (fr)
HK (1) HK1121425A1 (fr)

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BRPI0803511B1 (pt) 2019-05-28
DE102007031703A1 (de) 2009-01-08
EP2011603B1 (fr) 2010-05-26
US7975356B2 (en) 2011-07-12
CN101337281B (zh) 2013-04-24
ES2345575T3 (es) 2010-09-27
EP2011603A1 (fr) 2009-01-07
ATE468939T1 (de) 2010-06-15
BRPI0803511A2 (pt) 2009-04-07
DE502008000706D1 (de) 2010-07-08
ES2345575T5 (es) 2014-09-30
JP5198957B2 (ja) 2013-05-15
HK1121425A1 (en) 2009-04-24
CN101337281A (zh) 2009-01-07
US20090011688A1 (en) 2009-01-08
JP2009012178A (ja) 2009-01-22

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