EP3206833B1 - Dispositif de finition de surfaces optiquement actives particulièrement sur les verres de lunettes - Google Patents

Dispositif de finition de surfaces optiquement actives particulièrement sur les verres de lunettes Download PDF

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Publication number
EP3206833B1
EP3206833B1 EP15766400.4A EP15766400A EP3206833B1 EP 3206833 B1 EP3206833 B1 EP 3206833B1 EP 15766400 A EP15766400 A EP 15766400A EP 3206833 B1 EP3206833 B1 EP 3206833B1
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EP
European Patent Office
Prior art keywords
tool
polishing
spindle
axis
rotation
Prior art date
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Application number
EP15766400.4A
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German (de)
English (en)
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EP3206833A1 (fr
Inventor
Steffen Wallendorf
Holger Schäfer
Peter Philipps
Andreas Kaufmann
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Satisloh AG
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Satisloh AG
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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • 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
    • B24B13/0037—Machines having several working posts; Feeding and manipulating devices the lenses being worked by different tools, e.g. for rough-grinding, fine-grinding, polishing
    • 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
    • B24B13/005—Blocking means, chucks or the like; Alignment 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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 generally to a device for fine machining optically effective surfaces.
  • the invention relates to a device for fine machining the optically effective surfaces of spectacle lenses, as used in so-called "RX workshops", i. Production facilities for the production of individual spectacle lenses are widely used according to prescriptions.
  • the machining of the optically effective surfaces of spectacle lenses can be roughly subdivided into two processing phases, namely first the pre-processing of the optically effective surface to produce the recipe macrogeometry and then the fine processing of the optically effective surface to eliminate Vorbearbeitungsspuren and obtain the desired microgeometry.
  • the pre-processing of the optically effective surfaces of spectacle lenses inter alia, depending on the material of the lenses by grinding, milling and / or turning
  • the optically active surfaces of spectacle lenses are usually subjected during fine machining a fine grinding, lapping and / or polishing, including you uses a corresponding machine.
  • the term "polishing" including in word compositions such as "polishing tool” or the like.
  • Fine grinding and lapping operations include, in the example so fine grinding or lapping.
  • hand-fed polishing machines in RX workshops are usually designed as "twin machines", so that advantageously the two lenses of an "RX job" - a spectacle lens prescription always consists of a pair of spectacle lenses - can be simultaneously finished.
  • Such "twin” polishing machines are for example from the publications DE 10 2009 041 442 A1 and DE 10 2011 014 230 A1 known, which form the closest prior art in terms of machine kinematics.
  • such a polishing machine has a machine housing which defines a working space, projecting into the two workpiece spindles, via which two lenses to be polished by means of a rotary drive can be driven to rotate about mutually parallel workpiece axes of rotation C1, C2.
  • the polishing machine On the tool side, the polishing machine has a first linear drive unit, by means of which a first tool carriage is movable along a linear axis X, which extends substantially perpendicular to the workpiece axes of rotation C1, C2, a pivot drive unit which is arranged on the first tool carriage and by means of a pivot yoke a pivoting adjusting axis B can be pivoted, which is substantially perpendicular to the workpiece axes of rotation C1, C2 and substantially perpendicular to the linear axis X, a second linear drive unit which is arranged on the pivot yoke and by means of a second tool carriage along a linear Positioning axis Z is movable, which is substantially perpendicular to the pivoting adjustment axis B, as well as two tool spindles each having a tool receiving portion, wherein the tool receiving portions each one of the workpiece spindles assigned projecting into the working space.
  • a first linear drive unit by means of which a first tool carriage
  • Each tool spindle has a spindle shaft, on which the respective tool receiving portion is formed and which is rotatably mounted about a tool axis of rotation A1, A2 in a spindle housing, which in turn is guided axially displaceably defined in a guide tube in the direction of the tool axis of rotation.
  • the guide tubes are mounted on the pivot yoke, so that as a result the tool rotation axis A1 or A2 of each tool spindle forms a plane with the workpiece rotation axis C1 or C2 of the associated workpiece spindle in which the respective tool rotation axis A1 or A2 is axially displaceable relative to the workpiece rotation axis C1 or C2 of the associated workpiece spindle (linear axis X, linear adjustment axis Z) and tiltable (pivoting adjustment axis B).
  • the prior art polishing machine allows pairwise processing of spectacle lenses with a so-called "tangential polishing kinematics" in which the tool spindles axially delivered (Z) polishing tools at a preset but fixed pivot angle (B) of the tool spindles oscillating with relatively small strokes across (X) are moved over the lenses, as well as with a polishing kinematics, in which the supplied (Z) polishing tools during their oscillating transverse movement (X) at the same time continuously pivot (B) to follow the surface curvature of the lenses wherein the lenses and polishing tools the same or opposite directions with the same or different speeds about their axes of rotation (A1, A2, C1, C2) can be driven (at least in the case of polishing tools but not need).
  • tangential polishing kinematics in which the tool spindles axially delivered (Z) polishing tools at a preset but fixed pivot angle (B) of the tool spindles oscillating with relatively small strokes across (X) are moved over the lenses,
  • this polishing machine can already be advantageously used manifold.
  • difficult-to-polish materials e.g. Polycarbonate or HI index materials
  • Such conditional tool change times could be significantly reduced for industrial production through the use of automated tool changer tool magazines, but this would be associated with a high device complexity.
  • EP 1 867 430 A1 finally discloses a grinding and polishing machine for particular lenses with two tool spindles which are pivotable about a common pivot axis.
  • the invention has for its object to provide a simple and compact designed device for fine machining of optically effective surfaces of particular eyeglass lenses, which is as versatile as possible and thus allows different processing strategies, without requiring longer process times.
  • a device for fine machining of optically effective surfaces on, in particular, spectacle lenses as workpieces comprises a workpiece spindle projecting into a working space, via which a workpiece to be polished about a workpiece axis of rotation C is rotationally driven, and two of the workpiece spindle and opposite in the working space projecting tool spindles, on each of which a polishing tool about a tool axis of rotation A, A 'rotationally driven and along the tool An axis of rotation A, A 'axially deliverable (Z) is held and which are movable relative to the workpiece spindle together along a substantially perpendicular to the workpiece axis of rotation C extending linear axis X and about different pivoting adjustment axes B, B', which are substantially perpendicular extend to the workpiece axis of rotation C and substantially perpendicular to the linear axis X, wherein the tool spindles are arranged in succession seen in the direction of the linear axis X.
  • the device according to the invention is advantageously compact, which predestines it for use as a polishing cell in a polishing machine having a plurality of devices according to the invention. It is conducive to a simple construction of the device as well as in terms of energy efficiency, that both tool spindles are movable both along the linear axis X and about the various pivoting adjusting axes B, B ', because for each of these linear or Pivoting movements thus only one drive is needed.
  • polishing tools are used on the two tool spindles of a device, e.g. a pre-polishing and polishing with different polishing pads done in a workpiece clamping, which allows very short polishing times at the same time increased surface quality.
  • both concavely curved and convex curved spectacle lenses can be polished with the same polishing tool or with polishing tools shaped according to the respective spectacle lens curvature (cc or cx).
  • Such a mixed operation in the polishing processing is particularly advantageous in the now increasingly occurring eyeglass lenses with both sides aspherical or progressive surfaces.
  • Another processing variant with a device and identical polishing tools would be to use the tool spindles alternately during the machining of a workpiece or from workpiece to workpiece. This would have the advantage that the respectively unused polishing tool and the corresponding tool spindle together with drive could cool down in the break, with the effects of uniform wear, a controlled engine heat and / or increased tool life.
  • At least two devices according to the invention are used as polishing cells in a polishing machine for the simultaneous polishing of at least two spectacle lenses corresponding to the number of spectacle lenses to be polished at the same time (expansion version), which can be done suitably by modular arrangement in a common machine frame, the possible processing strategies become even more diverse.
  • the two tool spindles with respect to their associated two workpiece spindles always together linearly (X) or pivotally moved (B), in the processing of only one spectacle lens - what may be necessary for rework - the other tool spindle not be moved without function and in an energetically unfavorable manner.
  • a pair of spectacle lenses with individual process parameters per spectacle lens can be processed simultaneously in two polishing cells, while in the third polishing cell - with suitable tooling - "special work" such as the machining of special geometries (eg large diameters and or strong bends), rework, or recipes with only one prescription glass (if the second spectacle glass is a standard glass) can be performed.
  • suitable tooling - "special work” such as the machining of special geometries (eg large diameters and or strong bends), rework, or recipes with only one prescription glass (if the second spectacle glass is a standard glass) can be performed.
  • the individual devices according to the invention in the machine frame can e.g. can be arranged in a star shape around a central operator position, which can have advantages for the machine feed.
  • the devices are arranged next to one another in such a polishing machine, so that the respective linear axes X, X ', X "are essentially parallel to one another, which not only represents a space-saving arrangement, but also an automation, in particular of the workpiece change simplified.
  • the polishing machine in a still further developed, automated version of a transfer station with possibly a conveyor belt, for storage of recipe boxes for receiving polished and polished lenses, a washing station for washing the polished lenses and - to further increase productivity - a Portal handling system
  • a transfer station with possibly a conveyor belt, for storage of recipe boxes for receiving polished and polished lenses, a washing station for washing the polished lenses and - to further increase productivity - a Portal handling system
  • the lenses are automatically transported between the stations and the devices and positioned in the respective station or device. If no conveyor belt is used, the transfer station could also be designed so that several recipe boxes could be stored in the position accessible by the portal handling system, or in / on the transfer station would be possible to move the recipe boxes using the portal handling system.
  • the portal handling system can have a suction unit movable in space for holding a spectacle lens to be polished on the optically active surface to be polished and a multi-finger gripper movable in space for holding a polished spectacle lens at its edge.
  • a multi-finger gripper movable in space for holding a polished spectacle lens at its edge.
  • the pivot axes B, B 'of a device - based on the linear axis X - are at different heights, which - assuming constant height of the workpiece spindle - from tool spindle to tool spindle different Axialhübe and / or tilt angle of the polishing tools permit or require.
  • the pivoting adjusting axes B, B ' lie in an imaginary plane which extends along the linear axis X or parallel thereto.
  • each tool spindle has the same kinematic boundary conditions; Tool strokes and thus stiffness are identical, which thus freedom of choice the positioning of the polishing tools on the front and rear tool spindle consists.
  • the arrangement is preferably made so that the one tool spindle is mounted on a front pivot yoke which is pivotally articulated about a pivot axis B defined on a tool carriage, while the other tool spindle is mounted on a rear pivot yoke pivotally articulated about the other pivot axis B 'on the same tool carriage, which in turn is drivably guided along the linear axis X with respect to a frame surrounding the working space.
  • a stationary rotary drive is provided with respect to the frame, which is drivingly connected to a ball screw having a rotatably mounted ball screw, which engages with a rotatably connected to the tool slide nut.
  • a stationary rotary drive is provided with respect to the frame, which is drivingly connected to a ball screw having a rotatably mounted ball screw, which engages with a rotatably connected to the tool slide nut.
  • a separate drive for example a respectively assigned torque motor, for the pivoting movement of each pivoting yoke.
  • a linear drive is provided, with its one end to the one pivot yoke at a distance to the corresponding pivot axis B and with its other end the tool carriage is articulated, wherein the one pivot yoke is also drivingly connected to the other pivot yoke via a coupling rod, which is articulated by the pivot axes B, B 'spaced at one end to the one pivot yoke and with its other end to the other pivot yoke ,
  • the device advantageously has only a simple drive for pivoting both tool spindles.
  • each tool spindle has a piston-cylinder arrangement along the associated tool rotation axis A, A 'for the axial feed of the respective polishing tool, with a piston accommodated in a cylinder housing coaxial arrangement with a spindle shaft is operatively connected, which is rotatably mounted together with the piston-cylinder assembly in a spindle housing about the respective tool rotation axis A, A '.
  • This construction is characterized in particular by a low weight, which in particular axial movements can be driven with high dynamics, which in turn allows short processing times with very high polishing quality, since the polishing tool can always follow the workpiece, even with relatively large deviations from the rotational symmetry of the workpiece ,
  • the cylinder housing of the pneumatically actuated piston-cylinder assembly is preferably formed in two parts and lined with a barrel sleeve made of mineral glass, in which the existing at its tread of a graphite material piston is received longitudinally displaceable.
  • a barrel sleeve made of mineral glass, in which the existing at its tread of a graphite material piston is received longitudinally displaceable.
  • the piston of the piston-cylinder assembly can also be connected via a thin rod made of a spring steel tensile and pressure resistant to the spindle shaft.
  • a very light and play-free power transmission element provides in a simple manner for a radial compensation possibility, which can not come to a jamming, if the center axes of the piston or the piston-cylinder assembly and the spindle shaft are not aligned correctly.
  • the cylinder housing can be provided on the outer peripheral side with a toothing for engagement of a toothed belt, which can be driven via a motor with pulley flange-mounted on the respective pivot yoke, around the piston-cylinder arrangement and thus the spindle shaft around the respective tool spindle.
  • Such a rotary drive means of standard drive elements is not only inexpensive, but has - compared to a likewise conceivable coaxial with the spindle shaft arranged rotary drive, as shown and described in the generic prior art - the advantage of low moving masses, which in turn high quality of the polished surface in short Process times is conducive.
  • a gear made of steel may be provided on the drive side, which meshes with a spindle-side, made of plastic gear of the same size (ratio 1: 1), both gears may be provided with a helical toothing, so that the gear pair as a result also runs very quietly.
  • the polishing tool may have an axially and rotationally securable fastened to the respective spindle shaft tool holder head on which a polishing plate is exchangeably held, including a base body of the polishing plate and the tool holder head with complementary structures for axial locking and for rotational drive of the polishing plate with the Tool receiving head are provided.
  • This causes on the one hand an easy interchangeability of the polishing plate and a secure hold of the polishing plate on the respective tool spindle, on the other hand, a defined, positive torque transmission between the tool holder head and polishing plate during polishing.
  • the tool holder head may have a ball joint, with a ball socket received in a ball socket, which is formed on a spindle shaft of the respective tool spindle fastened ball pin, while the ball socket is formed in a receiving plate, with which the polishing plate can be locked.
  • This allows in a simple manner a tilting of the polishing plate relative to the spindle shaft of the respective tool spindle in the polishing, so that the polishing plate can easily follow the most diverse spectacle lens geometries, even for example cylindrical surfaces or progressive surfaces with high additions.
  • the tiltability of the polishing plate advantageously allows the implementation of polishing processes with the already mentioned "tangential polishing kinematics", wherein the polishing plate is able to align angularly on the lens.
  • the ball head may have a receiving bore for a transverse pin, which extends through the ball head and engages on both sides of the ball head with associated recesses in the ball socket to connect the receiving plate rotatable with the ball pin.
  • a transverse pin which extends through the ball head and engages on both sides of the ball head with associated recesses in the ball socket to connect the receiving plate rotatable with the ball pin.
  • the receiving plate so resiliently supported by an elastic ring member on a ball pin side Abstützflansch that the latched with the receiving plate polishing plate strives to align with its central axis with the ball pin and thus the spindle shaft of the respective tool spindle.
  • the polishing plate is prevented from excessive tilting movements, which on the one hand especially during the reversal of motion in the mentioned oscillation of the polishing plate on the lens has a favorable effect, since the polishing plate does not buckle and can jam in the sequence on the lens.
  • such an elastic support of the receiving plate of the polishing tool when mounting or placing the polishing plate is advantageous because the receiving plate assumes a defined position with slight compulsion.
  • the merging of polishing plate and spectacle lens can also be due to the elastic (Vor) orientation of the receiving plate done so that the polishing plate touches substantially axially oriented on the lens, and not tilted, which is particularly thick or high-build polishing plates could cause problems.
  • Vor elastic
  • the device of the tool holder head is in an axially retracted position of the spindle shaft with the cylinder housing or a rotatably connected part by means of a latching device latched.
  • the retracted position of the spindle shaft thus advantageously no energy must be expended - such.
  • a negative pressure to the above-described piston-cylinder arrangement of the tool spindle - to hold the tool holder head for example, a change of the polishing plate in the retracted position. While this would be possible other measures, such as a holding solution with permanent or electrically generated magnetic force, but these would be more complex and possibly problematic in terms of easy achievement of low breakaway moments.
  • the locking device can have a plurality of distributed over the circumference of the tool holder head, along the respective tool axis of rotation A, A 'protruding spring projections which engage positively with lugs in an annular groove which on the cylinder housing or the so that rotatably connected part is formed.
  • Such parts can be easily made of plastic, with larger quantities possibly also injection molding technology.
  • a lower region of the working space, into which the workpiece spindle protrudes is delimited by a trough, which is integrally deep-drawn from a plastic material and has step-free wall surfaces.
  • Fig. 1 is - as a preferred application or site of use of a device 10 for fine machining of optically active surfaces cc, cx on workpieces, such as lenses L (see. Fig. 8 ) - a polishing machine with 11 numbered.
  • three such devices 10, 10 ', 10 " are arranged as polishing cells in a common machine frame 12 in accordance with the number of lenses O to be polished Fig. 2 to 7 representative of all three devices 10, 10 ', 10 "based on the in Fig.
  • the device 10 has a projecting into a working space 13 workpiece spindle 14 through which a to be polished lens L, which is usually held by a block material M on a block piece S for receiving in the workpiece spindle 14 (see in turn Fig. 8 ), about a workpiece axis of rotation C can be driven to rotate. Furthermore, the device 10 has two associated with the workpiece spindle 14 and opposite in the working space 13 projecting tool spindles 16, 16 ', on each of which a polishing tool 18, 18' about a tool axis of rotation A, A 'rotationally driven and along the tool axis of rotation A, A 'axially deliverable (Zustellachsen Z, Z') is held.
  • the tool spindles 16, 16 ' are movable relative to the workpiece spindle 14 together along a linear axis X extending substantially perpendicular to the workpiece rotation axis C and pivotable about different pivoting adjustment axes B, B' which are substantially perpendicular to the workpiece rotation axis C and extend substantially perpendicular to the linear axis X.
  • the tool spindles 16, 16 'arranged in the direction of the linear axis X are arranged one behind the other. This essential for the device 10 construction is best in Fig. 5 to see.
  • Fig. 1 are the individual, independently operable devices 10, 10 ', 10 "in the machine frame 12 modular - and as a respective module optionally separately interchangeable - arranged in a compact manner side by side, that the respective linear axes X, X', X" substantially parallel to each other.
  • This modular design allows for identical components with a common production with corresponding number of advantages in addition, it also allows flexible installation of various manual or automated variants.
  • a transfer station 21 here provided with a conveyor belt 22, for storing usual in spectacle lens production recipe boxes 23 for receiving of lenses to be polished and polished L.
  • the automated variant of the polishing machine 11 shown here has a portal handling system 24 by means of which the lenses L are automatically transported between the stations 20, 21 and the devices 10, 10 ', 10 "and in the respective station 20, 21 or apparatus 10, 10 ', 10 "can be positioned.
  • the portal handling system 24 has a suction unit 25 movable in space for holding a lens L to be polished on the optically effective surface cc to be polished and a multi-finger gripper 26 movable in space for holding a polished lens L at its edge.
  • the mentioned movement possibilities in the room are in Fig. 1 by movement arrows x, y, z (horizontal or vertical linear movements) and b (tilting movement about a parallel to the horizontal direction of movement y transverse axis) indicated.
  • the gantry handling system 24 has two x-axis generating units 28, 28 'for generating the x-movement, which are arranged on top of the polishing machine 11 on both sides of the machine frame 12.
  • Their x-carriages 29, 29 'each carry a swiveling holder 30, 30' which, with the aid of a pneumatic cylinder 31, tilts a y-linear unit 32 forming the "gantry" on the swiveling holders 30, 30 'for generating the y-axis. Movement possible by about 20 °.
  • a z-linear unit 34 attached to a y-carriage 33 of the y-linear unit 32 can be tilted from the vertical in order to be adapted to a workpiece spindle inclination, which can not be recognized in the drawings, and which is in the machine frame 12
  • the suction unit 25 and the multi-finger gripper 26 are longitudinally displaceably mounted in such a way that they can be moved in opposite directions by means of a common drive, ie if the suction unit 25 is driven down at the same time moves the Mehrfingergreifer 26 upwards and vice versa.
  • a lens L to be polished by means of the suction unit 25 of the portal handling system 24 from a recipe box 23 on the transfer station 21 can be lifted (z) by moving the z-linear unit 34, then moved in space (b, x y) and the desired device 10, 10 ', 10 "for polishing machining can be used (z) on the inclined workpiece spindle 14.
  • the finished polished lens L can be removed from the respective device 10, 10' by means of the multi-finger gripper 26, 10 "lifted out (z), transported to the washing station 20 (b, x, y) and inserted into this (z), to remove scraps by washing.
  • the clean spectacle lens L can finally lifted out of the washing station 20 by means of the multi-finger gripper 26 (z), moved to the respective recipe box 23 on the transfer station 21 (x, y) and deposited there (z). Accordingly, the spectacle lenses L can be transported back and forth between the devices 10, 10 ', 10 "and stations 20, 21 as it is or in an analogous manner by means of the portal handling system 24.
  • the working space 13 of the device 10 is surrounded by a frame 36, which may be designed as a welded construction of steel parts, for example.
  • the working space 13 can be covered by a bellows-type working space cover 38, which can be closed to the front by a sliding door 39.
  • the laterally suitably guided working space cover 38 can be moved or withdrawn by means of a pneumatic cylinder 40.
  • a pneumatic cylinder 41 is provided, which is suitably articulated between the sliding door 39 and the frame 36.
  • Down the work space 13 is bounded by a integrally deep drawn from a plastic material, suitably attached to the frame 36 trough 42 with step-free wall surfaces and a receiving opening 43 for the workpiece spindle 14 (see Fig. 6 and 7 ), through which the workpiece spindle 14 extends suitably sealed on the circumference from below, in order to project into a lower region of the working space 13.
  • the frame 36 has a bottom plate 45, on which the workpiece spindle 14 is flanged below the receiving opening 43 in the trough 42 from above (see in particular the Fig. 4 . 6 and 7 ).
  • the workpiece spindle 14 has a collet 46 which can be actuated by an actuating mechanism, not shown, to clamp a block L locked on a block S axially fixed and capable of rotation on the workpiece spindle 14.
  • 47 with a fortified below the bottom plate 45 pneumatic cylinder for said actuating mechanism is numbered (see Fig. 5 to 7 ), by means of which the collet 46 can be opened or closed in a conventional manner.
  • a rotary drive 48 - in the illustrated embodiment a speed-controlled asynchronous three-phase motor - flanged from below to the bottom plate 45. Also below the bottom plate 45 of the rotary drive 48 is drivingly connected at 49 by means of a toothed belt drive with the roller bearing spindle shaft of the workpiece spindle 14, so that the rotary drive 48, the workpiece spindle 14 with a predetermined speed and direction of rotation is driven to rotate (workpiece rotation axis C).
  • a tool slide 50 is provided for the common movement of the tool spindles 16, 16 ', which is guided along the linear axis X drivable with respect to the frame 36. More specifically, for moving and positioning the tool carriage 50 guided on two parallel guide rails 51, 52 guided on the frame 36 on opposite sides, a rotary drive 53 fixedly mounted on the frame 36 is provided, which is drive-connected to a ball screw 54. The latter has a rotatably mounted at both ends, axially fixed ball screw 55, which rotatably connected to the tool slide 50 Mother 56 intervenes.
  • the tool carriage 50 according to the Fig.
  • the rotary drive 53 for moving the tool carriage 50 is a servomotor, which is connected to the ball screw spindle 55 via, for example, a metal bellows coupling 59.
  • the thus constructed, substantially horizontally extending linear axis X is CNC-position-controlled; however, to simplify the illustration, the associated displacement measuring system is not shown.
  • the tool carriage 50 is formed as a frame construction, with a seen in a plan view substantially rectangular, inner opening 60 for receiving the two pivotable tool spindles 16, 16 '.
  • the one, front tool spindle 16 is mounted on or in a front pivot yoke 61 which is pivotally about the pivot axis B defined hinged to both sides of the opening 60 on the tool carriage 50, while the other tool spindle 16 'at a rear Pivoting yoke 62 is mounted, which is pivotally defined behind the front pivot yoke 61 about the other pivoting adjusting axis B '- again on both sides of the opening 60 - is hinged to the tool carriage 50.
  • a further linear drive 65 is provided, with its one end to the front pivot yoke 61 at a distance from the corresponding Pivot axis B and hinged at its other end to the tool carriage 50.
  • the linear drive 65 is a commercially available, so-called "electric cylinder", with an actuating rod 66 which can be retracted or extended via a rotary drive 67 and a gear 68 with appropriate energization of the rotary drive 67.
  • This linear drive 65 is pivotally mounted at its drive end to a mounted on the tool carriage 50 retaining fork 69, while at the other end of the linear drive 65, the actuating rod 66 pivotally engages a fork-shaped pivot arm 70 which is fixed to the front pivot yoke 61 (see in this area the screws in the Fig. 2 to 4 ).
  • the two pivot yokes 61, 62 are drive connected via a coupling rod 71 spaced from the pivot axes B, B ', above the latter with one end at the front Swivel yoke 61 (bearing 72) and hinged at its other end to the rear pivot yoke 62 (bearing 73).
  • the tool spindle 16 has a spindle housing 74, via which the tool spindle 16 according to FIG Fig. 8 is flanged from below on the pivot yoke 61.
  • dash-dotted lines indicate a screw connection.
  • the other components or assemblies of the tool spindle 16 are rotatably mounted in the spindle housing 74 via a bearing assembly of rolling bearings, which comprises a lower fixed bearing 75 and an upper floating bearing 76, which are mounted by means of a spacer sleeve 77 spaced from each other in the spindle housing 74.
  • each tool spindle 16, 16' has a piston-cylinder arrangement 78, 78 '(also in FIGS Fig. 6 and 7 indicated).
  • the piston-cylinder assembly 78 has a received in a cylinder housing 79 piston 80, which in coaxial arrangement with a according to Fig. 8 (and Fig. 7 ) From the spindle housing 74 extendable spindle shaft 81 is operatively connected.
  • the piston-cylinder arrangement 78 can be acted upon pneumatically via a commercially available rotary feedthrough 82 at the upper end of the cylinder housing 79 in the figures.
  • the piston-cylinder arrangement 78 is rotatable together with the spindle shaft 81 in the spindle housing 74 about the tool rotation axis A, as already indicated.
  • the cylinder housing 79 is according to the Fig. 8 and 9 further formed in two parts, with an upper housing part 83 and a lower housing part 84, which are screwed together at 85 centered each other.
  • a running sleeve 86 made of mineral glass is accommodated in the interior to the lining of the cylinder housing 79, which is fastened in the housing upper part 83 with the aid of an O-ring 87 and in which the existing on its tread of a graphite material piston 80 is received longitudinally displaceable.
  • Such, very smooth and essentially stick-slip-free "glass cylinders" are commercially available, for example, from Airpot Corporation, Norwalk, CT, USA.
  • the piston 80 of the piston-cylinder assembly 78 via a thin rod 88 made of a spring steel tension and compression-resistant connected to the spindle shaft 81, via in the Fig. 8 and 9 above and below the screw 88 shown on the rod 88.
  • the lower housing part 84 of the cylinder housing 79 is supported at the top of the figures rotatably via the floating bearing 76 in the radial direction on the spindle housing 74.
  • a labyrinth part 89 is flange-mounted on the housing lower part 84 by means of a screw connection 90, which axially clamps the inner ring of the fixed bearing 75 together with the housing lower part 84.
  • the labyrinth part 89 forms, as the name implies, with the underside of the spindle housing 74 at 91 a sealing labyrinth with narrow gaps and also has radially within the labyrinth seal 91 a ring recess 92 for receiving a sealing ring 93, the sealing lip also with the underside of the spindle housing 74 cooperates sealingly.
  • FIG. 8 shows the upper housing part 83 of the cylinder housing 79 passes through an opening formed in the pivot yoke 61 94 and is about this in Fig. 8 upwards.
  • the upper housing part 83 of the cylinder housing 79 on the outer peripheral side with a toothing 95 (see. Fig. 9 ) provided for the attack of a toothed belt 96.
  • the toothed belt 96 can be driven via a swivel yoke 61 from above flanged, for each swivel yoke 61, 62 also identical motor 97 with pulley 98 to the piston-cylinder assembly 78 and thus the spindle shaft 81 in the spindle housing 74 about the tool axis of rotation A. to be controlled in speed and direction of rotation.
  • a groove shaft guide 99 is further provided with formed in the spindle shaft 81 guide grooves 100 and thus a thrust bearing 101 - in the Fig. 8 and 9 merely indicated by a thick line, because known per se - engaging flange nut 102 which is received in the labyrinth part 89 and flanged thereto by means of a screw 103, so that the flange nut 102 is rotatably connected to the cylinder housing 79.
  • Such groove shaft guides are commercially available, for example, from Nippon Bearing Co., Ltd., Ojiya City, Japan.
  • the polishing tool 18 has a tool receiving head 104 with a receiving plate 105, the axially and rotationally capable - yet releasably - is attached to the spindle shaft 81 of the tool spindle 16.
  • a polishing plate 106 is held interchangeable, including a base body 107 of the polishing plate 106 and the tool holder head 104, more precisely its receiving plate 105 are provided with complementary structures 108 for axial locking and rotational driving of the polishing plate 106 with the tool holder head 104.
  • This formed by the complementary structures 108 interface between polishing plate 106 and tool receiving head 104 is the subject of the document EP 2 464 493 B1 , to which at this point with regard to structure and function of the interface to avoid repetition expressly referred.
  • the receiving plate 105 of the tool holder head 104 On the side facing away from the polishing plate 106 side of the receiving plate 105 of the tool holder head 104 has a ball joint 109, with a received in a ball socket 110 ball head 111 which is fastened to a screw on the spindle shaft 81 of the tool spindle 16, more precisely at the end screwed ball pin 112.
  • the ball socket 110 is formed in the receiving plate 105, with which the polishing plate 106 can be latched.
  • the ball head 111 has in the illustrated embodiment, a receiving bore 113 for a transverse pin 114 which extends through the ball head 111 with rounded ends and engages on both sides of the ball head 111 with associated recesses 115 in the ball socket 110 to the receiving plate 105 in the Art a Kardangelenks capable of rotation with the ball head 111 and thus to connect the spindle shaft 81 of the tool spindle 16.
  • an annular Abstweilflansch 116 is further inserted and fixed by means of the ball pin 112 to the spindle shaft 81.
  • the tool receiving head 104 in an axially retracted position of the spindle shaft 81 (see. Fig. 9 ) with the labyrinth part 89 - as with the cylinder housing 79 rotatably connected part - can be locked by means of a locking device 118.
  • the latching device 118 has a plurality of distributed over the circumference of the tool receiving head 104, along the tool rotation axis A projecting spring projections 119 which form-fitting with lugs 120 engage in an annular groove 121 which is formed on the labyrinth part 89.
  • the polishing tool 18 can be held powerless by latching in a retracted position on the tool spindle 16.
  • a ring magnet RM is glued in the piston 80 of the piston-cylinder assembly 78, which with a magnetic sensor MS (see the Fig. 2 . 6 and 7 ) cooperates in the vicinity of the rotary feedthrough 82.
  • a softer intermediate layer 122 of an elastic material is fastened in relation to the main body 107, on which a polishing agent carrier 123 rests, which forms the actual, outer processing surface 124 of the polishing plate 106.
  • This embodiment of the polishing plate 106 is particular in that the intermediate layer 122 has at least two regions of different hardness, which are arranged one behind the other in the direction of the center axis of the polishing plate 106 the region of the intermediate layer 122 adjoining the main body 107 is softer than the region of the intermediate layer 122 on which the polish carrier 123 rests.
  • the two regions of the intermediate layer 122 are formed here by mutually different foam layers 125, 126 of constant thickness, seen along the central axis of the polishing plate 106, namely a softer foam layer 125 on the base 107, more precisely its spherical end surface 127, and a harder foam layer 126 under the polish carrier 123.
  • the individual components (107, 125, 126, 123) of the polishing pad 106 are glued together.
  • This polishing plate 106 which can be used universally for a large range of workpiece curvatures, in particular its concrete design and dimensioning, are the subject of the parallel, ie filed with the same filing date German patent application DE 10 2014 XXX XXX.X, to which reference is expressly made in this regard in order to avoid repetition.
  • polishing tools or polishing plates with the device 10 can be used in accordance with the respective polishing requirements.
  • tools according to the document US 7,559,829 B2 to use without own rotary drive.
  • a slightly longer ball pin receiving bore and transverse pin would be omitted as well as the Abstützflansch and the elastic ring member of the polishing tool shown here.
  • a similar but slightly larger diameter flange would be used with an outer radial groove to receive a bellows.
  • the device 10 has the two tool spindles 16, 16 'arranged one behind the other, a “mixed operation” would also be possible, with an actively rotary driven polishing tool 18, as shown in the figures, on a tool spindle 16 and a merely “passively” rotated polishing tool according to about the publication US 7,559,829 B2 on the other tool spindle 16 '.
  • a liquid polishing agent comprises polishing agent nozzles 128 provided on the workpiece spindle 14 (see FIGS Fig. 4 to 7 in which such an example is shown for several distributed on the circumference of the workpiece spindle 14 nozzles) is supplied to the point of engagement between the tool and the workpiece - are well known to those skilled in the art and are therefore not described in detail here.
  • a device for fine machining of optically effective surfaces on, in particular, spectacle lenses as workpieces comprises a workpiece spindle projecting into a working space, via which a workpiece to be polished is rotatably drivable about a workpiece axis of rotation (C), and two of the workpiece spindle are assigned and projecting into the working space tool spindles.
  • a polishing tool about a tool axis of rotation (A, A ') is rotationally driven and along the tool axis of rotation axially deliverable (infeed Z, Z') held.
  • the tool spindles are movable relative to the workpiece spindle together along a linear axis (X) extending substantially perpendicular to the workpiece rotation axis and pivotable about different pivoting adjustment axes (B, B ') which are substantially perpendicular to the workpiece rotation axis and substantially perpendicular to the linear axis run.
  • the tool spindles are arranged one behind the other as seen in the direction of the linear axis.

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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)

Claims (21)

  1. Dispositif (10) pour l'usinage de finition de surfaces optiques actives (cc, cx), notamment sur des verres de lunettes (L) en guise de pièces d'oeuvre, comprenant
    une broche porte-pièce (14) s'engageant dans un espace de travail (13), et par l'intermédiaire de laquelle une pièce d'oeuvre à polir peut être entraînée en rotation autour d'un axe de rotation de pièce (C), et
    deux broches porte-outil (16, 16'), qui sont associées à la broche porte-pièce (14) et s'engagent de manière opposée à celle-ci dans l'espace de travail (13), et sur chacune desquelles est tenu un outil de polissage (18, 18') respectif en pouvant être entraîné en rotation autour d'un axe de rotation d'outil (A, A') et en pouvant être soumis à un déplacement d'avance axial le long de l'axe de rotation d'outil (A, A'), et qui peuvent être déplacées en commun par rapport à la broche porte-pièce (14) le long d'un axe linéaire (X) s'étendant sensiblement de manière perpendiculaire à l'axe de rotation de pièce (C), et peuvent pivoter autour de différents axes de réglage de pivotement (B, B') s'étendant sensiblement de manière perpendiculaire à l'axe de rotation de pièce (C) et sensiblement de manière perpendiculaire à l'axe linéaire (X),
    dispositif dans lequel les broches porte-outil (16, 16') sont agencées l'une derrière l'autre, vu dans la direction de l'axe linéaire (X).
  2. Dispositif (10) selon la revendication 1, dans lequel les axes de de réglage de pivotement (B, B') se situent dans un plan fictif, qui s'étend le long de l'axe linéaire (X) ou parallèlement à celui-ci.
  3. Dispositif (10) selon la revendication 1 ou la revendication 2, dans lequel une broche porte-outil (16) est montée sur une console de pivotement avant (61), qui est articulée sur un chariot porte-outil (50) en pouvant pivoter de manière définie autour d'un axe de réglage de pivotement (B), tandis que l'autre broche porte-outil (16') est montée sur une console de pivotement arrière (62'), qui est articulée sur le chariot porte-outil (50) en pouvant pivoter de manière définie autour de l'autre axe de réglage de pivotement (B'), le chariot porte-outil étant pour sa part guidé par rapport à un cadre de structure (36), qui entoure l'espace de travail (13), en pouvant être entraîné le long de l'axe linéaire (X).
  4. Dispositif (10) selon la revendication 3, dans lequel il est prévu, pour déplacer et positionner le chariot porte-outil (50) guidé sur deux tiges de guidage (51, 52) liées au cadre de structure (36), un entraînement de rotation (53), qui est en position fixe par rapport au cadre de structure (36) et est relié sur le plan de l'entraînement, à une transmission par vis à billes (54) comprenant une vis à billes (55) monté rotative, qui est en prise avec un écrou (56) lié de manière fixe en rotation au chariot porte-outil (50).
  5. Dispositif (10) selon la revendication 3 ou la revendication 4, dans lequel il est prévu, pour le pivotement défini des deux broches porte-outil (16, 16') autour des axes de réglage de pivotement (B, B'), un entraînement linéaire (65), qui est articulé, avec une de ses extrémités, sur une console de pivotement (61) à distance de l'axe de réglage de pivotement (B) correspondant, et, avec son autre extrémité, sur le chariot porte-outil (50), et dans lequel ladite une console de pivotement (61) est reliée sur le plan de la transmission d'entraînement, à l'autre console de pivotement (62), par l'intermédiaire d'une tige de couplage (71), qui est articulée, à distance des axes de réglage de pivotement (B, B'), par une de ses extrémités, à ladite une console de pivotement (61), et, par son autre extrémité, à l'autre console de pivotement (62).
  6. Dispositif (10) selon l'une des revendications précédentes, dans lequel chaque broche porte-outil (16, 16') comprend, pour le déplacement d'avance axial de l'outil de polissage respectif (18, 18') le long de l'axe de rotation d'outil (A, A') associé, un agencement à piston-cylindre (78, 78') avec un piston (80) logé dans un corps de cylindre (79) et relié à un arbre de broche (81, 81') pour l'actionnement de celui-ci et en étant disposé coaxialement à celui-ci, cet arbre de broche étant monté, en commun avec l'agencement à piston-cylindre (78, 78'), dans un fourreau de broche (74), de manière rotative autour de l'axe de rotation d'outil (A, A') respectif.
  7. Dispositif (10) selon la revendication 6, dans lequel le corps de cylindre (79) de l'agencement à piston-cylindre (78, 78') pouvant être actionné par voie pneumatique, est d'une configuration en deux parties et est garni intérieurement d'une chemise de coulissement (86) en verre minéral, dans laquelle est reçu en coulissement longitudinal, le piston (80) réalisé en un matériau à base de graphite au niveau de sa surface de coulissement.
  8. Dispositif (10) selon la revendication 6 ou la revendication 7, dans lequel le piston (80) de l'agencement à piston-cylindre (78, 78') est relié de manière rigide en traction et en compression à l'arbre de broche (81, 81'), par l'intermédiaire d'une mince tige (88) en un acier à ressort.
  9. Dispositif (10) selon l'une des revendications 6 à 8, dans lequel le corps de cylindre (79) est muni sur sa périphérie extérieure, d'une denture (95) destinée à la venue en prise d'une courroie crantée (96), qui peut être entraînée par l'intermédiaire d'un moteur (97) à poulie crantée (98), qui est bridé sur la console de pivotement (61, 62) respective, pour faire tourner l'agencement à piston-cylindre (78, 78') et ainsi l'arbre de broche (81, 81') autour de l'axe de rotation d'outil (A, A').
  10. Dispositif (10) selon l'une des revendications 6 à 9, dans lequel pour la transmission d'un couple du corps de cylindre (79) de l'agencement à piston-cylindre (78, 78') à l'arbre de broche (81, 81'), il est prévu un guidage à cannelures d'arbre (99) comprenant des rainures de guidage (100) réalisées dans l'arbre de broche (81, 81') et un écrou à embase (102), qui est en prise avec ces rainures par l'intermédiaire d'un élément de palier axial (101), et est relié de manière fixe en rotation au corps de cylindre (79).
  11. Dispositif (10) selon l'une des revendications 6 à 10, dans lequel l'outil de polissage (18, 18') comprend une tête porte-outil (104), qui peut être fixée à l'arbre de broche (81, 81') respectif en étant susceptible d'être entraîné axialement et en rotation, et sur laquelle est maintenu de manière interchangeable un disque de polissage (106), et à cet effet un corps de base (107) du disque de polissage (106) et la tête porte-outil (104) sont pourvus de structures complémentaires (18), pour l'encliquetage axial et pour l'entraînement en rotation du disque de polissage (106) avec la tête porte-outil (104).
  12. Dispositif (10) selon la revendication 11, dans lequel la tête porte-outil (104) possède une articulation à rotule (109) comportant une rotule (111), qui est reçue dans un coussinet sphérique (110), et est formée sur un tenon de rotule (112) pouvant être fixé à l'arbre de broche (81, 91') de la broche porte-outil (16, 16') respective, tandis que le coussinet sphérique (110) est formé dans un plateau de réception (105) sur lequel peut être encliqueté le disque de polissage (106).
  13. Dispositif (10) selon la revendication 12, dans lequel la rotule (111) présente un alésage d'accueil (113) pour un tourillon transversal (114), qui s'étend à travers la rotule (111) et vient en prise, des deux côtés de la rotule (111), avec des évidements (115) associés dans le coussinet sphérique (110), en vue de lier le plateau de réception (105) au tenon de rotule (112) avec capacité d'entraînement en rotation.
  14. Dispositif (10) selon la revendication 12 ou la revendication 13, dans lequel le plateau de réception (105) s'appuie élastiquement, par l'intermédiaire d'un élément annulaire élastique (117), sur un flasque d'appui (116) côté tenon de rotule, de manière telle que le disque de polissage (106) encliqueté avec le plateau de réception (105) ait tendance, avec son axe central, à s'aligner avec le tenon de rotule (12) et ainsi l'arbre de broche (81, 81') de la broche porte-outil (16, 16') respective.
  15. Dispositif (10) selon l'une des revendications 11 à 14, dans lequel la tête porte-outil (104) peut, dans une position axialement rétractée de l'arbre de broche (81, 81'), être encliquetée avec le corps de cylindre (79) ou une pièce (89), qui y est liée en rotation, au moyen d'un dispositif d'encliquetage (118).
  16. Dispositif (10) selon la revendication 15, dans lequel le dispositif d'encliquetage (118) comprend une pluralité de protubérances élastiques (119), qui sont réparties sur la périphérie de la tête porte-outil (104) et sont en saillie le long de l'axe de rotation d'outil (A, A') respectif, et qui, avec des mentonnets (120), viennent en prise par complémentarité de formes dans une rainure annulaire (121) formée sur le corps de cylindre (79) ou la pièce (89) qui y est liée de manière fixe en rotation.
  17. Dispositif (10) selon l'une des revendications précédentes, dans lequel une zone inférieure de l'espace de travail (13) dans laquelle s'engage la broche porte-pièce (14), est délimitée par une cuve (42), qui est obtenue d'un seul tenant par emboutissage d'une matière plastique, et qui comprend des surfaces de paroi exemptes de décrochements.
  18. Machine de polissage (11) pour le polissage simultané d'au moins deux verres de lunettes (L), comprenant un bâti de machine (12) dans lequel sont agencés, conformément au nombre des verres de lunettes (L) à polir simultanément, au moins deux dispositifs (10, 10', 10") selon l'une des revendications précédentes.
  19. Machine de polissage (11) selon la revendication 18, dans laquelle les dispositifs (10, 10', 10") sont agencés côte à côte, de sorte que les axes linéaires respectifs (X, X', X") s'étendent sensiblement de manière parallèle entre eux.
  20. Machine de polissage (11) selon la revendication 18 ou la revendication 19, comprenant un poste de transfert (21), qui, le cas échéant, comprend une bande de transport (22) pour le dépôt de cases d'accueil (23) destinées à recevoir des verres de lunettes (L) à polir et polies, un poste de lavage (20) pour le lavage des verres de lunettes (L) ayant été polies, et un système de manutention à portique (24) à l'aide duquel les verres de lunettes (L) peuvent être transportés automatiquement entre les postes (20, 21) et les dispositifs (10, 10', 10"), et être positionnés automatiquement dans le poste (20, 21) ou le dispositif (10, 10', 10") respectivement considéré.
  21. Machine de polissage (11) selon la revendication 20, dans laquelle le système de manutention à portique (24) comprend une unité à ventouse (25) pouvant être déplacée dans l'espace et destinée à maintenir un verre de lunettes (L) à polir, au niveau de la surface optique active (cc) devant être polie, ainsi qu'un préhenseur à doigts multiples (26), pouvant être déplacé dans l'espace et destiné à maintenir un verre de lunettes (L) ayant été poli, au niveau de son bord.
EP15766400.4A 2014-10-15 2015-09-17 Dispositif de finition de surfaces optiquement actives particulièrement sur les verres de lunettes Active EP3206833B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014015053.4A DE102014015053A1 (de) 2014-10-15 2014-10-15 Vorrichtung zur Feinbearbeitung von optisch wirksamen Flächen an insbesondere Brillengläsern
PCT/EP2015/001857 WO2016058663A1 (fr) 2014-10-15 2015-09-17 Dispositif d'usinage fin de surfaces optiquement actives en particulier de verres de lunettes

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EP3206833A1 EP3206833A1 (fr) 2017-08-23
EP3206833B1 true EP3206833B1 (fr) 2019-04-03

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US (1) US10583540B2 (fr)
EP (1) EP3206833B1 (fr)
CN (1) CN107107298B (fr)
DE (1) DE102014015053A1 (fr)
WO (1) WO2016058663A1 (fr)

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WO2016058663A1 (fr) 2016-04-21
US20170246720A1 (en) 2017-08-31
US10583540B2 (en) 2020-03-10
CN107107298B (zh) 2020-02-18
EP3206833A1 (fr) 2017-08-23
CN107107298A (zh) 2017-08-29
DE102014015053A1 (de) 2016-04-21

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