Apparatus and method for processing optical workpieces

Abstract

The invention relates to an apparatus for machining optical workpieces, having a work space, in which a workpiece spindle for receiving and holding an optical workpiece and a tool spindle having a machining tool for machining an optical workpiece, which can be received thereon, are arranged in the work space, wherein the tool spindle is arranged rotatably about a central axis thereof, wherein the tool spindle is arranged linearly movably along the central axis thereof. If at least two pairs of tool spindles are provided, at least one device for rotary drive is provided for the at least two pairs of tool spindles, at least one device for linear drive is provided for the at least two pairs of tool spindles along the central axis thereof. The invention also relates to a method for machining optical workpieces.

Description

Technical Field

[0001] This invention relates to equipment for processing optical components. This invention also relates to a method for processing optical components. Background Technology

[0002] An apparatus for polishing spectacle lenses is known from WO 2012 / 126604 A2 and EP 2 502 702B1. This apparatus is characterized by the automation of lens and tool changes. Lenses to be polished or processed are automatically transported into the apparatus, while finished, processed lenses are automatically transported out. Different polishing tools are stored in a cassette depending on the processing task, allowing polishing of lenses with extreme geometries, such as high diopter values. Here, the necessary tool changes, depending on the processing task, are also performed automatically. Summary of the Invention

[0003] The purpose of this invention is to further simplify the equipment used for processing optical components, while providing a wider range of applications.

[0004] The above-mentioned objectives are achieved by a device according to one embodiment of the invention or a method according to another embodiment of the invention. Advantageous further developments arise from other embodiments of the invention.

[0005] According to a first aspect of the invention, the proposed device is characterized in that the means for linear drive includes a slider on which a pair of tool spindles are mounted, and the slider is arranged on a linear guide so that it can move linearly along the central axis of the pair of tool spindles.

[0006] Compared to existing technologies, the proposed device has a substantially simplified construction because the paired tool spindles are now fixed to sliding members configured for this purpose, and the feed or movement of the paired tool spindles in the direction of the workpiece spindle or the optical workpiece received on it (i.e., in the direction of the Z-axis of the device) is achieved solely through the movement of the configured sliding members. In other words, the corresponding Z-axis is externalized, removed, or moved out of the paired tool spindles.

[0007] A second aspect of the invention, which can also be implemented independently, is that at least two pairs of tool spindles are provided in the device, and at least one means for rotary drive is provided for the at least two pairs of tool spindles, preferably two means for rotary drive, and at least one means for linear drive is provided for the at least two pairs of tool spindles along their central axis, preferably two means for linear drive.

[0008] The proposed design allows for more flexible and / or wider application of the device.

[0009] Particularly preferred is the two-stage machining method, in which the optical workpiece received on the workpiece spindle can first be machined by machining tools located on a first pair of tool spindles. Subsequently, the optical workpiece can be machined by machining tools located on a second or another pair of tool spindles. It is particularly advantageous that each pair of tool spindles can use the same or different machining tools.

[0010] In contrast to the aforementioned technological status quo, both the tool library and the automated equipment for changing tools are dispensable, and the proposed device was developed based on this fact.

[0011] Another result is that tool replacement in cases of wear or damage can now not only be done manually, but is particularly preferably always done manually.

[0012] A third aspect of the invention, which can also be implemented independently, relates to a method wherein, in order to process an optical workpiece, a pre-processing step is performed using a first pair of tool spindles on which a first processing tool is mounted, and immediately thereafter, without interrupting processing, particularly without changing the tools, a post-processing step is performed using a second pair of tool spindles on which a second processing tool is mounted.

[0013] In a particularly preferred embodiment, at least two pairs of tool spindles are provided, wherein each device for linear drive has at least two sliders, on which a pair of tool spindles is mounted, and wherein each slider is arranged on a linear guide rail such that it can move linearly along the central axis of the respective pair of tool spindles. In another preferred development, the corresponding Z-axis is also removed, externalized, or moved out from the pair of tool spindles.

[0014] Another particularly preferred configuration of the device is that the processing device for handling optical workpieces is located outside the workspace on a first side of the workspace, and at least one device for linear drive is arranged on a second side of the workspace, the second side being opposite to the first side of the workspace.

[0015] Therefore, at least one device for linear drive is arranged on the edge side inside the device, that is, after the corresponding part of the housing of the device is removed, at least one device for linear drive can be freely accessed, especially for maintenance and repair purposes.

[0016] It is also conceivable that two pairs of tool spindles and two pairs of workpiece spindles could be combined in a suitably sized device, allowing four optical workpieces to be processed simultaneously in a single machining step.

[0017] In a preferred embodiment, the means for rotating the tool spindle can be implemented to drive a pair of tool spindles to rotate synchronously.

[0018] A preferred arrangement for linearly driving paired tool spindles has a toothed rack fixed to a corresponding slider, the rack meshing with a rotatable gear or toothed wheel. This ensures that each pair of tool spindles can be driven linearly and synchronously.

[0019] A particularly preferred embodiment of the invention specifies that each device for linear drive is arranged on at least one substrate. Particularly preferably, a substrate is provided with a first device for linear drive disposed on its upper side and a second device for linear drive disposed on its lower side.

[0020] In particular, the second device for linear drive can be arranged to be substantially a mirror image of the first device for linear drive, wherein the common substrate forms a mirror plane.

[0021] This particularly preferred modular form of the two devices for linear drive makes it possible to manufacture equipment with one or two pairs of tool spindles, specifically according to customer requirements, in a particularly simple manner.

[0022] The aforementioned preferred modular structure particularly allows for the configuration of either one or two pairs of tool spindles. This enables the equipment to be configured according to customer requirements, wherein the actual machining of the optical workpiece is performed in one stage, i.e., one machining step (using one pair of tool spindles), or in two stages, i.e., two machining steps (using two pairs of tool spindles, each pair equipped with different machining tools).

[0023] Another preferred development of the device is that the tool holder is attached or fixed to each tool spindle, and the machining tool is rigidly received or rigidly held on the tool holder.

[0024] The foregoing aspects and features, as well as the aspects and features of the invention derived from the claims and the following description, can in principle be implemented independently of each other, but can also be combined arbitrarily. Attached Figure Description

[0025] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, which are shown schematically and not to scale:

[0026] Figure 1 An exemplary implementation of the proposed device in a stereoscopic full view;

[0027] Figure 2 Based on the three-dimensional internal diagram viewed from above. Figure 1 The equipment;

[0028] Figure 3A according to Figure 1 A perspective view of an exemplary embodiment of the working chamber of the device;

[0029] Figure 3B according to Figure 3A A front view of the working chamber, featuring linear and rotary drives for the tool spindle;

[0030] Figure 3C yes Figure 3B A partial view showing linear and rotary drives for the tool spindle;

[0031] Figure 4A according to Figure 1 A perspective view of an exemplary embodiment of a cleaning station for a device in the cleaning position;

[0032] Figure 4B according to Figure 4A A detailed front view of the cleaning station at the loading or unloading position;

[0033] Figure 4C Used according to Figure 4A An exemplary embodiment of the clamping ring or chuck of the workpiece spindle in the cleaning station;

[0034] Figure 4D Used for pretensioning Figure 4C A detailed sectional view of the clamping ring or chuck mechanism;

[0035] Figure 5 Used for according to Figure 1 An exemplary embodiment of a device for inspecting tools on equipment;

[0036] Figure 6A according to Figure 2 A three-dimensional top view of the equipment;

[0037] Figure 6B according to Figure 6A A perspective view of an exemplary embodiment of the processing apparatus of the device;

[0038] Figure 7A A side view of an exemplary embodiment of the proposed tool holder;

[0039] Figure 7B By according to Figure 7A The longitudinal section of the tool holder;

[0040] Figure 7C according to Figure 7A The tool holder features a bellows and a spindle flange;

[0041] Figure 7D By according to Figure 7C The longitudinal section of the tool holder with bellows and spindle flange;

[0042] Figure 7EA perspective view of a pair of tool spindles, one with and one without machining tools;

[0043] Figure 7F By according to Figure 7E The longitudinal cross-sectional view of the tool spindle shows the machining tools;

[0044] Figure 8A A three-dimensional view of the proposed machining tool;

[0045] Figure 8B By according to Figure 8A The longitudinal section of the machining tool;

[0046] Figure 9 according to Figure 8A An enlarged view of the machining tool connected to the tool holder;

[0047] Figure 10A Through machining tools and a specified cross-section of the workpiece, wherein the machining tools are separated from the workpiece;

[0048] Figure 10B according to Figure 10A The view shows the machining tool in the center of the machining position;

[0049] Figure 10C according to Figure 10B The view shows the machining tool in an off-center machining position;

[0050] Figure 11 The machining position of the machining tool relative to the workpiece in the plan view.

[0051] In the accompanying drawings, some of which are not to scale and are merely schematic, the same reference numerals are used for the same, similar or related parts and components in which corresponding or comparable features and advantages are realized, even if repeated descriptions are omitted. Detailed Implementation

[0052] Figure 1 An exemplary embodiment of the apparatus 1 according to the present invention is shown in perspective. The apparatus 1 is used to process optical workpieces 9, particularly optical surfaces of workpieces 9, such as, for example, the optical surfaces of lenses, particularly spectacle lenses.

[0053] The device 1 has a housing 2 that encloses multiple workstations and peripheral devices (see below). A portion 3 of the housing 2 covers a conveying device 4, which is a conveyor belt in an exemplary embodiment, so that the device 1 can be integrated into a system with multiple separate processing units for processing optical workpieces 9, such as those known, for example, from EP 2 822 883 B1.

[0054] In an exemplary embodiment, the device 1 is controlled by a CNC machine, and therefore a control panel 5 is provided, through which the operator can control and monitor the functions and / or processing sequence of the device 1 when processing the optical workpiece 9.

[0055] Figure 2 It shows that according to Figure 1 An internal view of the device 1. The housing 2 includes a working chamber 10, a cleaning station 70, and / or a processing device 100 for processing optical workpieces 9 to be processed.

[0056] The tool inspection device 50 is used to perform sensory inspection on the machining tool 320 used in the equipment 1 (see below).

[0057] Figure 3A The working chamber 10 for use in device 1 is shown in a perspective view.

[0058] The working chamber 10 has a chamber shell 11 that encloses the working space 12.

[0059] The chamber housing 11 can be opened and closed by, for example, a movable cover (not shown) as described in WO 2012 / 126604 A2.

[0060] Two known workpiece spindles 20 and 20' are arranged within the workspace 12. The workpiece spindles 20 and 20' are housed in a common spindle housing 21.

[0061] In the example, the central axis M of the workpiece spindles 20 and 20' extending parallel to the X-axis of device 1 is... WS The distance between them is 130mm; this corresponds to the central axis M of the optical workpiece 9 to be processed. W The preset distance between them.

[0062] The X, Y, and Z axes of device 1 are in Figure 3A As shown in the diagram. The terms "X direction", "Y direction" and "Z direction" preferably refer to these axes.

[0063] The X-axis, Y-axis, and Z-axis are preferably orthogonal bases or mutually orthogonal.

[0064] Preferably, the X direction is a vertical direction, and the Y and Z directions are corresponding horizontal directions, especially orthogonal or perpendicular to each other.

[0065] Workpiece spindles 20 and 20' rotate around axis R WS Rotatably arranged, wherein in an exemplary embodiment, the rotation axis R WS The corresponding center axis M of the workpiece spindles 20 and 20' WSCoincident. The known drive mechanism for this rotation of the workpiece spindles 20, 20' is housed in the spindle housing 21.

[0066] In an exemplary embodiment, the spindle housing 21 and thus the workpiece spindles 20, 20' are designed to pivot about the B-axis of the device 1 via the rotary drive 25.

[0067] In an exemplary embodiment, the rotary drive 25 has a motor 26 with a shaft gear (hereinafter: gear motor 26) having a hollow shaft (not shown) known per se for cable threading, which is housed in a B-shaft housing 22 to prevent contamination.

[0068] The B-axis flange 23 is attached to the B-axis housing 22, which is operatively connected to the gear motor 26 on one hand and to the spindle housing 21 on the other.

[0069] The entire structural unit, comprising workpiece spindles 20 and 20', spindle housing 21 and B-axis housing 22, gear motor 26 and B-axis flange 23, is also designed to be movable along the X-axis of the device 1. On one hand, this allows the workpiece spindles 20 and 20' to carry the optical workpiece 9 (see below). On the other hand, the feeding or movement of the optical workpiece 9 toward the machining tool 320 can be optimized (see below).

[0070] In a manner known per se, the X-axis motor 24 drives the base plate via a ball screw, and the B-axis housing 22 is connected to the base plate via a cylinder and a suspension plate (not shown).

[0071] In the illustrated embodiment, two pairs of tool spindles 30, 30' and 31, 31' are respectively housed within the workspace 12.

[0072] The first upper spindle pair 30, 30' in the X direction is used for the first machining step, while the second lower spindle pair 31, 31' in the X direction is used for the second machining step. Therefore, the optical workpiece 9 is machined using a two-stage machining method.

[0073] However, it is also possible to provide only a pair of tool spindles 30, 30' or 31, 31', preferably the upper tool spindle pair 30, 30' in the X-axis direction of device 1. In this case, the optical workpiece can be processed using a single-stage machining method.

[0074] Alternatively, for example, two pairs of tool spindles 30, 30'; 31, 31' can be equipped with the same machining tool 320, and the optical workpiece 9 can be machined using a single-stage machining method. In this case, the tool change interval is doubled, that is, after double the service life, four instead of two machining tools 320 must be replaced. Therefore, for example, the machining of the optical workpiece 9 only needs to be interrupted once per shift for the corresponding operator.

[0075] Alternatively, the working space 12 of the working chamber 10 can be expanded so that two pairs of workpiece spindles are arranged on correspondingly expanded spindle housings, and two pairs of tool spindles 30, 30'; 31, 31' are assigned to these spindle housings. In this case, four optical workpieces 9 can be processed simultaneously using a single-stage machining method.

[0076] For each pair of tool spindles 30, 30' and / or 31, 31', a device 47, 47' is provided for rotary driving of the corresponding tool spindle pair 30, 30' and / or 31, 31', and for driving along the Z-axis of the device 1 and / or along the central axis M of the corresponding tool spindle 30, 30' and / or 31, 31' arranged parallel to it. WZ Devices 48 and 48' that linearly drive the corresponding tool spindle pairs 30, 30' and / or 31, 31'.

[0077] from Figure 3B It can be seen that each tool spindle 30, 30'; 31, 31' passes through the chamber shell 11 of the working chamber 10 to the outside.

[0078] A substrate 32 having an upper side 32a and a lower side 32b is provided on the outside of the working chamber 10.

[0079] The substrate 32 is fixed to the base frame (not shown) of the device 1 in a manner known per se.

[0080] On the upper side 32a of the substrate 32, corresponding devices 47 and 48 are provided for rotating and / or linearly driving the upper tool spindle pairs 30 and 30'.

[0081] On the lower side 32b of the substrate 32, corresponding devices 47' and 48' for rotating and / or linearly driving the lower tool spindle pairs 31 and 31' are provided.

[0082] The corresponding devices 47, 47', 48, and 48' are arranged to be substantially mirror images of each other along the substrate 32, which serves as a mirror plane.

[0083] Pairs of guide rails 33, 33'; 34, 34' are mounted on both the upper side 32a and the lower side 32b of the substrate 32.

[0084] An upper sliding member 35 with a basically groove-shaped cross section is provided on the upper guide rail pair 33, 33', while a lower sliding member 36 with a basically groove-shaped cross section is provided on the lower guide rail pair 34, 34'.

[0085] Both sliders 35 and 36 are arranged on corresponding guide rail pairs 33, 33' or 34, 34' so as to be movable in the Z direction of device 1. For this purpose, upper or lower guide carriages 37, 37'; 38, 38'—guide carriages mounted on rolling bearings in the exemplary embodiment—are arranged in a manner known per se between the corresponding sliders 35, 36 and the corresponding associated guide rails 33, 33' or 34, 34'.

[0086] Each sliding member 35, 36 is provided with a retainer 39, 39' on which toothed racks 41, 41' are fixed. Each toothed rack 41, 41' meshes with a corresponding toothed wheel 42, 42'. Each toothed wheel 42, 42' is rotatably connected to a motor 43, 43' which is known in itself.

[0087] The effect of this structure is that, in the exemplary embodiment, each pair of tool spindles 30, 30' and / or 31, 31' are arranged such that they can move synchronously along the Z-axis of the device 1.

[0088] Furthermore, the mirror-symmetric construction of the substrate 32 as a mirror plane allows for the provision of only the upper tool spindle pairs 30, 30' or all two pairs of tool spindles 30, 30' and 31, 31', according to customer requirements, without the need for extensive reconstruction of the device 1.

[0089] from Figure 3B It can be seen that the preferred modular structure of device 1 is also accompanied by the corresponding arrangement of the X, Y, Z and B axes of device 1.

[0090] As described above, the spindle housing 21, on which workpiece spindles 20 and 20' are received, can move linearly along the X-axis of the device 1 and can pivot about the B-axis of the device 1. Pairs or at least two pairs of tool spindles 30, 30'; 31, 31' can move linearly along the Z-axis of the device 1.

[0091] The arrangement of the axes relative to each other allows, for example in an exemplary embodiment, pairs of tool spindles 30, 30' to be used for pre-polishing of the optical workpiece 9, and pairs of tool spindles 31, 31' to be used for post-polishing of the optical workpiece 9. This requires that the tool spindles 30, 30'; 31, 31' and / or the machining tool 320 received thereon can be sufficiently advanced / fed or moved in the direction of the workpiece spindles 20, 20' and / or the optical workpiece 9 received thereon.

[0092] Therefore, the linear movement of the spindle housing 21 along the X-axis and the pivoting movement of the spindle housing 21 about the B-axis are selected such that the optical workpiece 9 can be brought into a position that optimizes the feed or advance movement of the tool spindles 30, 30'; 31, 31'. At the same time, the lifting of the X-axis and / or the rotation of the B-axis are minimized, so the device 1 has a particularly compact construction.

[0093] Figure 3C Devices 47 and 47' for rotary driving each pair of tool spindles 30, 30'; 31, 31' are shown. Each of these devices 47 and 47' has a belt 44 and 44', particularly a V-belt, which rotates about pulleys 45 and 45' arranged on the tool spindles 30, 30'; 31, 31' and is driven by a motor 46 and 46'. This arrangement ensures that each pair of tool spindles 30, 30' and / or 31, 31' is driven to rotate synchronously.

[0094] Similarly, device 1 can be easily equipped with a pair of tool spindles 30, 30' or two pairs of tool spindles 30, 30'; 31, 31' without requiring extensive redesign.

[0095] On the outside of the working chamber 10, preferably in the Y-axis direction of the device 1 (see also...) Figure 2 ), 70 cleaning stations were set up, such as Figure 4A and 4B As shown. However, other arrangements are also possible. For example, the cleaning station 70 can be arranged between the working chamber 10 and the conveying device 4.

[0096] The cleaning station 70 has a housing 71 in which a vertically extending partition wall 72 is provided.

[0097] The housing 71 also has a cover 73 with a recess 74, which can be closed by a cover 75 that can be moved via a hydraulic or preferably pneumatic cylinder 76.

[0098] Two workpiece spindles 80, 80' are arranged on the left and right sides of the partition wall 72 for receiving pairs of finished, processed optical workpieces 9. In the exemplary embodiment shown, the optical workpiece 9 is a finished, polished lens that is blocked on the blocking member 8 in a manner known per se.

[0099] The partition wall 72 should prevent cross-contamination of the optical components 9 during the cleaning process.

[0100] exist Figure 4A In the diagram, the workpiece spindles 80 and 80' are shown at their lower position relative to the X-axis of the device 1, i.e., at their cleaning position. The optical workpiece 9 to be cleaned should be arranged as far away from the cover plate 73 as possible to avoid contamination by splashing water.

[0101] exist Figure 4B In this configuration, the workpiece spindles 80, 80' are shown in their upper position relative to the X-axis of the device 1, i.e., in their loading and / or unloading position. In this position, the optical workpiece 9 protrudes from the recess 74 of the cover plate 73, such that the workpiece spindles 80, 80' can be loaded with the optical workpiece 9 to be cleaned and / or can be removed from the workpiece spindles 80, 80' (see below).

[0102] Figure 4B It shows that according to Figure 4A A detailed front view of the interior of the cleaning station 70. This view shows that the workpiece spindles 80, 80' can be driven by a motor 77 via three pulleys 78a, 78b and a V-ribbed belt 79 about their respective axes of rotation R. RWS Rotation. Here, only pulley 78a is directly driven by motor 77, while the two pulleys 78b that drive the workpiece spindles 80 and 80' are passively driven by V-ribbed belts 79.

[0103] from Figure 4A , 4B It can also be seen that a base plate 81 is provided, wherein workpiece spindles 80 and 80' are arranged on the upper side of the base plate 81 along the X-axis direction, and pulleys 78b are arranged on the corresponding lower side of the base plate 81 and are operably connected to each other.

[0104] In addition, from Figure 4A , 4B As can be seen, a lifting cylinder 82, which operates pneumatically in the exemplary embodiment, is provided below the substrate 81. This lifting cylinder realizes the aforementioned height adjustment of the workpiece spindles 80, 80' along the X-axis of the device 1 in a manner known per se.

[0105] Finally, from Figure 4B It can be seen that sensors 83 and 83' are assigned to workpiece spindles 80 and 80' (e.g., a reflective light scanner known by itself), which detects loading errors on workpiece spindles 80 and 80'.

[0106] Here, one aspect is that the optical workpiece 9 is cleaned using a two-stage method. The first stage is the cleaning process, and the second stage is the drying process.

[0107] Figure 4A The spindles 80 and 80' of each workpiece are shown, and therefore each optical workpiece 9 is provided with only two cleaning fluid nozzles 84a and 84b.

[0108] The upper cleaning fluid nozzle 84a is arranged relative to the X-axis of the device 1 in a substantially circumferential region and slightly above the optical workpiece 9.

[0109] The cleaning fluid jet 85a (usually a water jet) ejected from the upper cleaning fluid nozzle 84a sweeps over and thus cleans the polished optical surface and peripheral surface of the optical workpiece 9.

[0110] The lower cleaning fluid nozzle 84b is arranged relative to the X-axis of the device 1 at a level / height that is substantially at the transition area between the optical workpiece 9 and the blocking member 8.

[0111] The cleaning fluid jet 85b (usually a water jet) ejected from the lower cleaning fluid nozzle sweeps over and thus cleans the surface of the barrier 8 and the optical workpiece 9 protruding from the barrier 8.

[0112] In an exemplary embodiment, the workpiece spindles 80, 80' and the optical workpiece 9 rotate at approximately 50 rpm during the cleaning process to ensure thorough cleaning along the entire circumferential surface of the optical workpiece 9 and the barrier 8.

[0113] The subsequent drying process initially consists of spin-drying the optical workpiece 9 and the blocking member 8 by the workpiece spindles 80, 80' rotating at 500 rpm in the exemplary embodiment. Here, the cleaning agent adhering to the optical workpiece 9 and the blocking member 8 is spun off due to the centrifugal force acting on them.

[0114] However, a drop of water remains at the center of the polished optical surface of optical workpiece 9 because the optical surface is typically concave and therefore no centrifugal force acts in this area. Furthermore, the cleaning agent, which is known to accumulate in the rear cavity of the barrier 8, cannot be removed. Instead, cleaning agent residue remains on the rear inner wall of the barrier 8.

[0115] To complete the drying process, two compressed air nozzles 86a, 86b are associated with each workpiece spindle 80, 80' and / or the blocking lens 9 received thereon.

[0116] The compressed air nozzle 86a is arranged such that the discharged compressed air pulse 87a is directed to the center of the typically concave, polished optical surface of the optical workpiece 9, thereby removing any water droplets remaining there.

[0117] The compressed air nozzle 86b is arranged such that the discharged compressed air pulse 87b is directed to the inner wall of the hollow rear side of the corresponding blocking member 8, thereby drying the inner wall from below.

[0118] On the other hand, each optical workpiece 9 is received by a chuck or collet 90 via its blocking member 8. Figure 4C A detailed view of the chuck 90 is shown in the figure.

[0119] In an exemplary embodiment, the chuck 90 is formed as a single piece, particularly by injection molding from a suitable plastic.

[0120] The chuck 90 has a locating ring 91, which is received and fixed in a suitable recess (not shown) at the free end of the workpiece spindle 80, 80'.

[0121] On the upper side 91a of the positioning ring 91 (relative to the X-axis of the device 1), three gripping elements 92 are arranged rotationally symmetrically, that is, at a distance of 120°.

[0122] The three gripping elements 92 are integrally connected to the upper side 91a of the positioning ring 91 based on the principle of flexible bearings or flexible hinges. The three gripping elements 92 are also integrally connected to the inner plate 93.

[0123] The inner plate 93 has a central opening 94 for receiving and securing the lifting rod 95 (see reference). Figure 4D ).

[0124] Figure 4D As shown, a lifting rod 95 is operatively connected to a lifting piston 96, which is pneumatic in this example. The lifting piston 96 is received in a piston plate 97. The piston plate 97 is received in a rear recess of a pulley 78a or 78b, thereby allowing it to be displaced along the X-axis of device 1.

[0125] Three pressure springs or compression springs 98, which are rotationally symmetrically spaced apart from each other, apply pressure to one side of the surface of the first seat 98a in the piston plate 97, and apply pressure to the other side of the surface of the seat 98b in the pulley 78a or 78b.

[0126] In the relaxed state of the illustrated compression spring 98, a force acts on the piston plate 97 in the direction of arrow F1, and thus on the lifting rod 95. For example, when compressed air D is applied to the lifting piston 96, a force acting in the opposite direction, i.e., in the direction of arrow F2, is applied to the piston plate 97, and thus to the lifting rod 95.

[0127] In order to load according to Figure 4C The chuck 90 applies a force to the lifting piston 96, as described in a manner known per se. This force acts on the inner plate 93 via the lifting rod 95 in the direction of arrow BB, causing the inner plate 93 to be lifted. As a result, the clamping element 92 is pressed outward in the direction of arrow C. In this position, the chuck 90 is open, so that it can receive the lower side of the blocking member 8 that blocks the optical workpiece 9.

[0128] Subsequently, the force is removed, causing the lifting piston 96 and lifting rod 95 to return to their positions according to... Figure 4DThe initial position of the gripper 92 and the return of the chuck 90 to its closed position allow the gripping element 92 to engage with the stop 8. The stop 8 is then secured to the gripper 90 either from the front or in a form-fit manner.

[0129] In a manner known per se, device 1 requires a means 50 for tool inspection in order to detect damage or even total loss of the machining tool 320.

[0130] according to Figure 3A and Figure 5 The proposed device 50 for tool inspection includes two laser scanners (not shown). Each laser scanner emits two-dimensional fan-shaped laser beams 51, 52. Here, an upper machining tool and a lower machining tool 320 are inspected simultaneously.

[0131] The laser beam 51 is configured to inspect the machining tool 320 received on the upper tool spindle 30, 30'. For this purpose, the laser beam 51 extends substantially perpendicular to the YZ plane of the device 1 and is tilted backward by 5° relative to the X axis.

[0132] The laser beam 52 is configured to inspect the machining tool 320 received on the lower tool spindles 31, 31'. For this purpose, the laser beam 52 extends obliquely along the X-axis, so that the machining tool 320 received on the lower tool spindles 31, 31' can be inspected without being obstructed by the upper tool spindles 30, 30' and the machining tool 320 received thereon. The laser beam 52 is also tilted backward by 5°.

[0133] To evaluate the measurement results, optical cut sensors were assigned to each laser beam in a manner known per se.

[0134] Laser beams 51 and 52 are arranged such that they strike the tool to be detected only in the radial direction (see...). Figure 3A This means that only the peripheral surfaces of the machining tool 320 to be inspected are detected by the laser beam, not their front surfaces. By rotating the tool spindles 30, 30'; 31, 31' during measurement and thus rotating the machining tool 320, coverage of the entire circumferential surface of the machining tool 320 to be inspected can be obtained.

[0135] In an exemplary embodiment, the processing tool 320 is a polishing tool for optical lenses. This processing tool 320 is, in principle, constructed in a manner known per se, of a substrate, an intermediate foam layer, and a polishing foil, which typically protrudes from the intermediate foam layer. Therefore, laser beams 51 and 52 cover the circumferential surface of the substrate, the circumferential surface of the intermediate foam layer, the circumferential edge of the polishing foil, and the rear side of the protruding polishing foil (because the laser beams 51 and 52 are tilted back by 5°).

[0136] In this exemplary embodiment, cracks and other damage in the intermediate foam layer, as well as cracks and other damage at the periphery of the polishing foil, and total loss or tearing of the processing tool 320 can be detected. A particular advantage is that inspection of the processing tool 320 can now detect defects in the intermediate foam layer, thereby preventing total loss of the processing tool 320, as it can be replaced in time before the intermediate foam layer is completely torn.

[0137] from Figure 5 It can be seen that the tool inspection device 50, together with its cable 53, is fixed to the positioning element 54, which in turn is engaged with the positioning plate 55.

[0138] The positioning plate 55 is connected to the carrier element 56, which is stacked with the positioning element 54, and the profile or guide rail 57 is fixed thereon.

[0139] The guide carriage 58, preferably mounted on a rolling bearing, is fixed to the underside of the positioning element 54 and engages with the guide rail 57.

[0140] The guide carriage 58 is operably connected to the pneumatic or hydraulic cylinder 59 via a connecting element 59'. This allows the device 50 to slide along the Y-axis of the device 1 on the guide rail 57.

[0141] In an exemplary embodiment, the travel distance is 130 mm; this corresponds to the central axis M of tool spindles 30, 30'; 31, 31'. WZ The distance between them.

[0142] Below the carrier element 56, another guide rail or rail 61 is fixed to the machine frame component 6 in a manner known per se. Another guide carriage is also fixed below the carrier element 56 (not shown).

[0143] The carrier element 56 is operably connected to the pneumatic or hydraulic cylinder 62 via the connecting element 62'. Therefore, the device 50 can move along the Y-axis of the device 1 on the guide rail 61 together with the carrier element 56. In this way, the device 50 can be brought into a retracted position, allowing free access to the working space 12 of the working chamber 10, for example, for necessary tool changes and / or maintenance work.

[0144] For processing optical workpieces 9, and particularly for transporting them into and out of equipment 1 and / or within that equipment, a processing device 100 is provided, such as... Figure 6A And especially Figure 6B As shown. The processing apparatus 100 is basically known from WO 2012 / 126604 A2, the disclosure of which is referenced.

[0145] from Figure 6A As can be seen, the conveying device 4 extends along the equipment 1 and is used to transport the optical workpiece 9 and / or convey the container 4' that holds the optical workpiece 9. Basically, the optical workpiece 9 to be processed is fed into the equipment 1 via the conveying device 4, and the completed optical workpiece 9 is conveyed out of the equipment 1 and further transported.

[0146] The conveying device 4 can be a separate component or an integral part of the equipment 1.

[0147] In an exemplary embodiment, the conveying device 4 is adapted to integrate the device 1 into a system that uses multiple independent processing devices to process optical lenses, such as those known, for example, from EP 2 822 883 B1.

[0148] In an exemplary embodiment, the conveying device 4 is designed as a conveyor belt or belt conveyor.

[0149] The function of the processing device 100 is to pick up or receive optical workpieces 9 in pairs at the conveying device 4, preferably from the conveying container 4' assigned to the optical workpieces 9, and send them into the working space 12 of the working chamber 10 and load the workpiece spindles 20, 20'.

[0150] Another function of the processing device 100 is to remove the finished polished optical workpiece 9 from the working space 12 of the working chamber 10 and / or from the workpiece spindles 20, 20', transport it to the cleaning station 70, and load its workpiece spindles 80, 80'.

[0151] Finally, the function of the processing device 100 is to remove the cleaned optical workpiece 9 from the cleaning station 70 or its workpiece spindle 80, 80' and transport it back to the conveying device 4 (and preferably store it in the corresponding conveying container 4').

[0152] Figure 6A The illustration shows a processing apparatus 100 that loads the cleaning station 70 and / or removes the cleaned optical workpiece 9 from the cleaning station 70.

[0153] Conveniently, the processing device 100 is arranged between the conveying device 4 and the working chamber 10 or the cleaning station 70.

[0154] The structure of the processing device 100 can be particularly... Figure 6B As seen in the image, the processing device 100 has a generally U-shaped rotary arm 101, on which two retaining devices 103, 103' are attached.

[0155] The slewing arm 101 is mounted on the slewing axis 101' via the retaining arm 104, so that it can pivot about the Y-axis of the device 1.

[0156] The horizontal support rod 102 is also mounted on the rotation axis 102', so that it can pivot about the Y-axis of the device 1.

[0157] In an exemplary embodiment, the processing device 100 further includes a rotary driver 105 for rotating the rotary arm 101 via a belt driver 106, such as... Figure 6A and 6B As shown. The rotation of the slewing arm 101 is performed by the belt drive 106 in a manner known per se, such that during the rotation process, the holding devices 103, 103' are always kept vertical or vertical, i.e., always aligned parallel to the X-axis of the device 1.

[0158] In a manner known per se, each holding device 103, 103' has a first receiving or picking-up device 107, in the form of a suction cup, and a second receiving or picking-up device 108, in the form of a four-finger clamp, on opposite sides.

[0159] The first pickup device 107 is always used to process the optical workpiece 9 that is still to be processed at the center, while the second pickup device 108 is used to process the polished or polished and cleaned optical workpiece 9 at the edge, thereby obtaining the completed processed optical workpiece 9.

[0160] The essential difference between the processing device 100 and the processing devices known in WO 2012 / 126604 A2 is that the processing device 100 is designed to be displaced or moved along the Y-axis or other axes such as the Z-axis of the device 1, so that the processing device 100 can be close to both the working chamber 10 and the cleaning station 70.

[0161] For this purpose, the processing device 100 is housed on a slider 110, which is arranged to be movable on a guide rail 112 via a guide carriage 111 in a manner known per se, in an exemplary embodiment, the guide carriage being mounted on a rolling bearing.

[0162] Motor 113 is conveniently used as a drive to move slider 110, for example, along the Y-axis of device 1.

[0163] In the illustrated embodiment, the guide rail 112 extends parallel to the Y-axis of the device 1.

[0164] The slide 110, guide carriage 111, and guide rail 112 are conveniently protected by a bellows (not shown) in a manner known per se to prevent contamination by any polishing agent that may have been carried away.

[0165] Another difference between the tool spindles known from EP 3 418 000 A1 and the proposed tool spindle pairs 30, 30'; 31, 31' used is the design of the proposed tool holder 120 for the suitable proposed machining tool 320.

[0166] Figure 7A and 7B An exemplary embodiment of the proposed tool holder 120 is shown.

[0167] In an exemplary embodiment, the tool holder 120, integrally formed or shaped into a single piece, is made of injection-molded plastic. For example, a suitable plastic is PA 6.6GF30 (a polyamide made of hexamethylenediamine and adipic acid (nylon), wherein the glass fiber content is 30% by weight).

[0168] The tool holder 120 has an annular holder head 121 centered on a collar 122.

[0169] The diameter of the collar 122 is larger than the outer diameter of the cage head 121.

[0170] Four positioning lugs or positioning elements 124, each spaced 90° apart, are integrally formed on the resulting annular outer edge 123 and integrally connected to the outer wall 121' of the cage head 121.

[0171] Each positioning lug or positioning element 124 has a generally circular positioning lug head or positioning element head 124a.

[0172] An extension 125, which is basically cylindrical, is connected to the side of the collar 122 away from the cage head 121, and the extension 125 is incorporated into the annular cage body 126.

[0173] Figure 7C and 7D The tool holder 120 shown in the embodiment that can be used in device 1 has a bellows 127, preferably made of vulcanized rubber, and a spindle flange 130.

[0174] The first free end 127' of the conventional bellows 127 is vulcanized on the cylindrical extension 125 in a manner known per se. The second free end 127" of the bellows 127 is secured to the collar 131 of the main shaft flange 130 by a clamp or clamping member 128.

[0175] When the second free end 127” is pulled onto the collar 131, the material of the bellows 127 is stretched, thereby securing the second free end 127” of the bellows 127 onto the collar 131. The clamp 128 serves as an additional fixing device for the force-fit connection.

[0176] exist Figure 7D As can be seen, an inner circumferential pressure bead 127a is formed on the second free end 127” of the bellows 127, and the pressure bead 127a engages with the annular circumferential indentation 132 behind the collar 131, thereby forming an additional form fit between the bellows 127 and the main shaft flange 130.

[0177] Figure 7D It is also shown that the inner disc 129 is held in place within the retainer body 126 of the tool holder 120 by means of an annular spring 129a. The disc 129 is made of a metallic material that can be attracted by a magnet.

[0178] The spindle flange 130 is also injection molded as a single piece and, in the exemplary embodiment, is made of the same material as the tool holder 120. The spindle flange 130 also has an annular spindle disc 133 adjacent to the indentation 132. The outer diameter of the spindle disc 133 is significantly larger than that of the collar 131.

[0179] Three recesses 134 are formed rotationally symmetrically on the spindle disk 133, each spaced 120° apart. Each recess 134 has two pairs of opposing spring elements 135. The free ends 135' of the spring elements 135 form an approximately circular profile.

[0180] Figure 7E and 7F The two tool spindles 30, 30' of device 1 are shown, as described above. From Figure 7E and 7F As can be seen, in each tool spindle 30, 30'; 31, 31', a lifting rod 314 is mounted in the spindle shaft 313 in a manner known per se, such that the lifting rod 314 is movably arranged in the Z-axis direction of the device 1. For this purpose, a lifting cylinder 316 is provided in each tool spindle 30, 30', 31, 31' in a manner known per se, which is pneumatically operated in the exemplary embodiment and operably connected to the lifting rod 314.

[0181] In an exemplary embodiment, the maximum swing stroke H of the lifting rod 314 is 25 mm (refer to...). Figure 7F ).

[0182] Figure 7E and 7F It is also shown that both the spindle shaft 313 and the lifting rod 314 protrude from the spindle head 310.

[0183] The lifting rod 314 is used in a manner known per se to cause the machining tool 320, received on each tool spindle 30, 30'; 31, 31', to oscillate and move to the optical workpiece 9 during machining.

[0184] The spindle head 310 of the free end of the cover tool spindles 30, 30' is connected to the bellows 311 in a conventional manner. The plate-shaped free end of the spindle head 310 has three bolts 312, which are arranged rotationally symmetrically with respect to each other at a distance of 120°. The bolts 312 have bolt heads 312a and annular recesses 312b located behind them.

[0185] The cap 315 is screwed onto the lifting rod 314 in a manner known per se, and its free surface 315a is formed as a magnet (see EP 3 418 000 A1, the disclosure of which is explicitly mentioned).

[0186] Figure 7E The diagram illustrates how the spindle disc 133 of the spindle flange 130 is secured to the spindle head 310. Bolts 312 are guided through recesses 134 formed in the spindle disc 133. During this process, spring elements 135 bend upwards along the direction of the bellows 127 until each bolt head 312a passes through the corresponding recess. The spring elements 135 then snap back into their initial position and simultaneously engage with an annular recess 312b, thus engaging behind the bolt head 312a. Therefore, the spindle disc 133 of the spindle flange 130 is securely held onto the spindle head 310.

[0187] exist Figure 7F As can be seen, when the spindle disc 133 is fixed to the spindle head 310, the lifting rod 314 with the cap 315 engages with the annular retainer body 126 of the tool holder 120. During this process, the disc 129 is attracted by the magnet on the free surface 315a of the cap 315 until the two parts are connected to each other in a force-fit manner. This facilitates fixing the spindle disc 133 to the spindle head 310 and helps to securely hold the tool holder 120 on the tool spindle.

[0188] In an exemplary embodiment, according to Figure 8A and 8B Tool spindles 30, 30'; 31, 31' are equipped with machining tools 320.

[0189] In an exemplary embodiment, the processing tool 320 is a polishing tool 320 used for polishing optical surfaces, particularly the formulation surface of lenses for eyeglass lenses.

[0190] In an exemplary embodiment, the polishing tool 320 has cylindrical rotational symmetry.

[0191] In the exemplary embodiment illustrated, the processing tool 320 has a substrate 321 with a base plate 322, an intermediate layer 330 in the form of a foam carrier, and a polishing film or polishing foil 340.

[0192] In an exemplary embodiment, the substrate 321 is rigid, but at least harder than the intermediate layer 330 and the polishing foil 340, in order to provide the necessary stability for the polishing tool 320 and allow it to be secured to the tool spindles 30, 30'; 31, 31'. A suitable material for the substrate 321 is rigid PVC (uPVC) material.

[0193] Conveniently, the substrate 321 is formed into a single part, for example, by injection molding.

[0194] The intermediate layer 330 is received in a precisely sized recess 323b on the workpiece side base surface 323a of the substrate 322 and is securely attached to the substrate 322, in an exemplary embodiment being glued or bonded.

[0195] In a manner known per se, the recess 323b has a defined spherical curvature, which produces a corresponding deformation of the intermediate layer 330, and thus produces a corresponding spherical curvature of the polished foil 340.

[0196] The radius of curvature of the recess 323b is between 75 mm and 1000 mm, typically between 150 mm and 600 mm.

[0197] Compared to existing technologies, the larger radius of curvature of the recess 323b has proven effective in enabling the polishing of larger machined surfaces of the lens and / or increasing material removal during polishing.

[0198] Of course, both convex and concave curvature (i.e., positive or negative radii of curvature) of the recess 323b can be set to allow optical workpieces 9 with concave or convex optical surfaces to be processed respectively.

[0199] In an exemplary embodiment, the RFID chip 325 is embedded in a precisely sized groove 324b in the spindle-side base surface 324a of the substrate 322 and is securely connected to the spindle-side base surface 324a, for example, by casting, gluing or bonding together.

[0200] Each RFID chip 325 can be read and / or overwritten in a manner known per se by a reader / writer.

[0201] In device 1, each RFID chip 325, i.e. each machining tool 320, is assigned its own reader / writer (not shown). Two or four corresponding readers / writers are recessed into the spindle housing 21 in pairs in a manner known per se, such that a first pair of readers / writers can be assigned to machining tools 320 on upper tool spindles 30, 30', and a second pair of readers / writers can be assigned to machining tools 320 on lower tool spindles 31, 31'.

[0202] In an exemplary embodiment, the second pair of read / write devices is recessed into the tool spindle side region of the spindle housing 21, such that when the workpiece spindles 20, 20' are in their loading or unloading positions, they can interact with the RFID chip 325 of the machining tool 320 on the lower spindle pair 31, 31'.

[0203] Additionally, in an exemplary embodiment, the first pair of read / write devices is arranged on the other side of the spindle housing 21, in an area away from the tool spindle. By pivoting the spindle housing 21 180° about its B-axis (with the cover of the working chamber 10 open), the first pair of read / write devices can interact with the RFID chip 325 of the machining tool 320 of the lower spindle pair 30, 30'.

[0204] On one hand, the RFID chip 325 and / or the associated reader / writer are used to identify the processing tool 320.

[0205] Additionally, in an exemplary embodiment, the read / write device overwrites each work cycle of the processing tool 320 onto its corresponding RFID chip 325 in order to monitor the number of work cycles, service life, and near-wear of each processing tool 320.

[0206] In an exemplary embodiment, an annular receiving area for receiving and centering the tool holder 120 is formed on the spindle-side base surface 324a of the substrate 321 or base plate 322 in the form of four spring elements 326, preferably spring tongues, and four spring elements 327, preferably spring tongues.

[0207] The spring element 326 is essentially cubic in shape. An internal chamfer 326a is formed at its free end 326', and a lateral chamfer 326b is formed on one side.

[0208] In contrast to spring element 326, spring element 327 has a receiving opening 327', thereby forming two legs 328, 329 with free ends 328', 329' and narrow region 327'".

[0209] The support leg 328 has the same height as the spring element 326 and also has an internal chamfer 328a.

[0210] The height of the outrigger 329 is lower than that of the spring tongue or spring element 326, and is essentially formed as a cubic frustum, wherein all four edges 329” of the cubic frustum have different heights.

[0211] Figure 8A It is also shown that the internal chamfer 326a of each spring tongue or spring element 326 is arranged adjacent to the leg 329 of the spring tongue or spring element 327.

[0212] The connection between the recess 323b in the workpiece side base surface 323a of the substrate 322 of the substrate 321 and the intermediate layer 330 is designed so that the torque of the tool spindles 30, 30'; 31, 31' can be transmitted from the substrate 321 to the intermediate layer 330.

[0213] In the exemplary embodiment shown, the recess 323b and the intermediate layer 330 are bonded together.

[0214] In an exemplary embodiment, the diameter of the intermediate layer 330 is between 35 mm and 60 mm.

[0215] The intermediate layer 330 is formed into two parts.

[0216] The first part 331 is directly (adhesively) bonded to the recess 323b of the substrate 322. The second part 332 is directly (adhesively) bonded to the first part 331.

[0217] The polishing foil 340 is directly (adhesively) bonded to the second part 332.

[0218] In an exemplary embodiment, both portions are made of polyurethane foam (PUR foam), wherein the first portion 331 is preferably composed of closed-cell PUR foam, while the second portion 332 is preferably composed of mixed-cell PUR foam to reduce the impact of the polishing agent on the material properties of the second portion 332. Other configurations of foam and / or other materials for the intermediate layer 330 are also conceivable.

[0219] The static modulus of the first portion 331 of the intermediate layer 330 is at least 1.2 times higher than that of the second portion 332 of the intermediate layer 330; however, it is also possible to increase it by 1.5 times or 2 times. Therefore, the first portion 331 of the intermediate layer 330 is harder than the second portion 332 of the intermediate layer 330.

[0220] In an exemplary embodiment, the static elastic modulus of the first portion 331 is greater than 0.4 N / mm². 2 But less than 2N / mm 2 The static elastic modulus is between 0.75 and 1.75 N / mm². 2 When done in between, good results can be achieved.

[0221] In an exemplary embodiment, the static elastic modulus of the second portion 332 is greater than 0.05 N / mm². 2 But less than 1 N / mm 2 The static elastic modulus is between 0.075 and 0.9 N / mm². 2 Between and within 0.1 to 0.6 N / mm 2 When done in between, good results can be achieved.

[0222] Therefore, the compressive hardness of the first portion 331 of the intermediate layer 330 is at least twice that of the second portion 332 of the intermediate layer 330; however, it is also possible to increase it by three or four times.

[0223] In an exemplary embodiment, the compressive hardness of the first portion 331 is 0.05 N / mm². 2 Up to 0.3 N / mm 2 Between 0.12 and 0.2 N / mm². 2 Specifically, it is 0.15 N / mm. 2 When done correctly, it can achieve good results.

[0224] In an exemplary embodiment, the compressive hardness of the second portion 332 is 0.01 N / mm. 2 Up to 0.1 N / mm 2 Between 0.02 and 0.08 N / mm². 2 In particular, the compressive hardness is between 0.031 and 0.047 N / mm. 2 When done in between, good results can be achieved.

[0225] The thickness of the first harder portion 331 of the intermediate layer 330 is significantly greater than that of the second softer portion 332 of the intermediate layer 330, thereby enabling precise polishing and reducing the center offset of the machining tool 320 during the polishing process.

[0226] The first part 331 is at least twice as thick as the second part 332 of the intermediate layer 330, but at most three times as thick. Good results can be achieved when the thickness of the first part 331 is between 10 and 14 mm and the thickness of the second part 332 is between 6 and 9 mm.

[0227] The total thickness of the intermediate layer 330 should not exceed 22mm.

[0228] The polishing foil 340 is made of polyurethane material and its diameter is larger than that of the intermediate layer 330, so it protrudes beyond the edge of the intermediate layer 330.

[0229] In an exemplary embodiment, the polishing foil 340 also has a thickness of 0.08 to 2 mm, wherein a thickness of 1.2 mm can achieve good results.

[0230] The radius of curvature of the polishing foil 340 or its polished surface 341 is typically larger than the radius of curvature of the recess 323b, typically by at least 100 mm. This depends, in a manner known per se, on the thickness of the intermediate layer 330 and the material properties of the intermediate layer 330 and the polishing foil 340.

[0231] Compared to existing technologies, the larger radius of curvature of the recess 323b and / or the polished surface 341 has proven useful in order to enable the polishing of larger processing areas of the lens and / or increase the amount of material removed during polishing.

[0232] Figure 9 The enlarged view shows the connection between the machining tool 320 and the tool holder 120.

[0233] Torque can be transmitted from tool spindles 30, 30'; 31, 31' to machining tool 320 via tool holder 120 and / or spindle disk 133.

[0234] The connection between the machining tool 320 and the tool holder 120 is reversible, so in the event of wear or damage, the replacement of the machining tool 320 can be performed manually in a simple manner.

[0235] from Figure 9 It can be seen that the spring elements 326 and 327 in the receiving area of ​​the base 321 are pushed onto the annular retainer head 121 of the tool holder 120, so that the free end 326' of the spring element 326 and the free ends 328' and 329' of the legs 328 and 329 abut against the collar 122 of the tool holder 120.

[0236] In this case, the legs 328, 329 of each spring tongue or spring element 327 respectively enclose the positioning lug or positioning element 124 of the tool holder 120. In this case, the narrow area 327” formed by the receiving opening 327' is located behind the head of the positioning lug or the head of the positioning element 124a, so that the base 321 is held in a clamping manner.

[0237] Furthermore, it can be seen that the locating lug head or locating element head 124a does not completely fill the receiving opening 327'. The advantage of doing so is that when manufacturing the base 321, for example by injection molding, a larger variation in manufacturing tolerances can be accepted, so the base 321 of the machining tool 320 can be regarded as a mass-producible item that can be manufactured cheaply.

[0238] The tool holder 120 is characterized by the rigid retention of the machining tool 320, meaning that any moving parts and / or elastic elements, such as ball joints, rubber elastic elements, or flexible bearings, between the tool holder 120 and the machining tool 320 are eliminated. In other words, during machining operations, particularly during polishing processes, the necessary deflection of the machining tool 320 is achieved solely through the elastic intermediate layer 330 of the two parts. Therefore, during machining operations, the machining tool 320 can be controlled and / or guided with greater precision than known in the prior art.

[0239] Another feature of the tool holder 120 is that it is securely mounted on the spindle head of the polishing spindle, and only the machining tool 320 itself is manually replaced in case of wear or damage.

[0240] The preferred design of spring elements 326 and 327 has the following effect: the operator can load or insert the base 321 of the machining tool 320 into the tool holder 120 without having to provide a free field of vision for this purpose.

[0241] For this purpose, the base 321 is pushed onto the annular retainer head 121 until resistance is felt (because, for example, the free ends of the spring elements 326, 327 rest or abut against the positioning element 124). The base 321 is then rotated clockwise on the retainer head 121 until resistance is felt again. In this position, the positioning element 124 rests against the chamfered free end 328' of the longer leg 328, thus preventing clockwise movement. The operator now knows that the positioning element 124 is positioned opposite its corresponding receiving opening 327'. The base 321 is now in the correct position on the annular retainer head 121 and can now be pushed, as... Figure 9 As shown.

[0242] As a result, a structurally simple, stable, jointless, and / or rigid connection is achieved between the machining tool 320 and the spindle head 310 of each tool spindle 30, 30'; 31, 31' via the tool holder 120. Furthermore, the machining tool 320 can be mounted or inserted into the tool holder 120 in this simple manner and can be removed or pulled out again when changing tools.

[0243] The apparatus 1 of the illustrated embodiment is preferably operated in the following manner. The various method steps may be implemented in different ways or in different orders, or may be omitted entirely, for example, the steps relating to workpiece transfer, especially if the arrangement of the various devices / stations in the apparatus is different from that shown.

[0244] Starting from this point, it is assumed that the first pair of optical workpieces 9, preferably optical lenses for eyeglasses, are cleaned in the cleaning station 70, and the second pair of optical workpieces 9 are processed in the working chamber 10, i.e., polished in the exemplary embodiment.

[0245] Simultaneously, the empty transport containers 4' used to hold or receive the two pairs of workpieces 9 move forward synchronously on the transport device 4, passing through the working chamber 10 and moving towards the cleaning station 70. Behind them is a transport container 4' containing the optical workpieces 9 to be processed.

[0246] The processing device 100 is positioned at the level of the cleaning station 70 because the processing operation in the working chamber 10, which in this exemplary embodiment is a polishing operation, takes considerably more time than the cleaning operation in the cleaning station 70.

[0247] Once the cleaning operation is complete, the cleaning station 70 is opened. The workpiece spindles 80, 80' carrying the cleaned and blocked optical workpieces 9 move upward along the X-axis of the device 1 until the optical workpieces 9 protrude from the cleaning station 70.

[0248] The processing device 100 grasps the cleaned optical workpieces 9 at their edges via its second pick-up device 108 (here: a four-finger gripper) of its holding devices 103, 103', and removes the optical workpieces 9 from the workpiece spindles 80, 80'. The rotating arm 101 of the processing device 100 rotates about its axis of rotation 101' in the direction of the conveying device 4. The cleaned optical workpieces 9 are placed in the conveying containers 4' assigned to them, which are simultaneously advanced further along the device 1 on the conveying device 4.

[0249] The transport container 4', which holds the completed optical workpiece 9, is transported out of the device 1 on the transport device 4.

[0250] Now, the processing device 100 moves along the Y-axis of the device 1 in the direction of the working chamber 10 on the guide rail 112.

[0251] Now, the crossbar 102 of the rotary arm 101 rotates about its axis of rotation 102', so that the first pick-up device 107 (here: suction cup) is now oriented toward the transport container 4'. The third pair of unprocessed optical workpieces 9 are centrally gripped by the first pick-up device 107 (here: suction cup).

[0252] Subsequently, the rotating arm 101 of the processing device 100 rotates about its axis of rotation 101' in the direction of the working chamber 10, and the crossbar 102 of the rotating arm 101 rotates about its axis of rotation 102', such that the second picking device 108 (here: four-finger gripper) is now oriented toward the working chamber 10.

[0253] Meanwhile, the polishing process for the second pair of optical workpieces 9 has been completed, and the working chamber 10 is opened. The B-axis housing 22, with the gear motor 26 located therein, and the B-axis disk or B-axis flange 23, together with the spindle housing 21 and the workpiece spindles 20, 20' housed therein, are lifted along the X-axis of the device 1. This brings the finished, polished optical workpieces 9, held on the workpiece spindles 20, 20', within reach of the second pick-up device 108 (here: a four-finger gripper) of the clamping devices 103, 103'. These devices now grip the second pair of finished, polished optical workpieces 9 at the edges and remove the optical workpieces 9 from the workpiece spindles 20, 20'.

[0254] Then, the crossbar 102 of the rotary arm 101 rotates about its axis of rotation 102', such that the first pick-up device 107 (here: suction cup) carrying the third pair of optical workpieces 9 to be processed is now oriented toward the working chamber 10. The workpiece spindles 20, 20' carry the third pair of optical workpieces 9. The workpiece spindles 20, 20' are lowered into the working chamber 10 along the X-axis of the device 1 in the reverse manner of the above operation. The working chamber 10 is closed, and the processing operation begins, in this case, the polishing process begins.

[0255] The time interval between removing the finished polished optical workpiece 9 from the workpiece spindles 20 and 20' and reloading the optical workpiece 9 to be polished is approximately 10 seconds. This time interval is used to perform an inspection on the machining tool 320.

[0256] For this purpose, the vertical or directional laser beam 51, as described above, is directed at the machining tool 320 closest to the upper tool spindle 30' of the device 50, and the oblique laser beam 52, also described above, is directed at the corresponding lower tool spindle 31' of the machining tool 320, while the machining tool 320 is slowly rotating. The laser beams 51 and 52 thereby detect the circumferential surfaces of the base 321 and intermediate layer 330 of each machining tool 320, as well as the circumferential edges of the protruding rear surface of the polishing foil 340 facing the intermediate layer 330.

[0257] Subsequently, the tool inspection device 50 moves along the Y-axis of the device 1 on the guide rail or rail 57 to the tool spindles 30, 31. Now, the machining tools 320 received on these tool spindles 30, 31 are inspected, as described.

[0258] This inspection of the machining tool 320 takes significantly less than 10 seconds, so it is completed before the processing device 100 is ready to reload the optical workpiece 9 to be polished onto the workpiece spindles 20, 20'.

[0259] As a result, the entire circumferential surface of all tools 320 was covered 360°.

[0260] Three types of defects can be identified:

[0261] 1. Cracks in the peripheral edge of polished foil 340;

[0262] 2. Cracks in intermediate layer 330; and

[0263] 3. Total loss of machining tool 320.

[0264] By detecting cracks in the intermediate layer 330, the risk of total loss is minimized, allowing the affected machining tool 320 to be replaced before total loss.

[0265] After performing tool inspection and reloading of workpiece spindles 20, 20', the processing device 100 moves along the Y-axis of the device 1 in the direction of the cleaning station 70 on the guide rail 112.

[0266] Now, the crossbar 102 of the rotary arm 101 rotates about its axis of rotation 102', causing the second pick-up device 108 (here: a four-finger gripper), now loaded with the completed, polished second pair of optical workpieces 9, to be oriented toward the cleaning station 70. The second pair of workpieces 9 to be cleaned is placed on the workpiece spindles 80, 80' of the cleaning station 70. The workpiece spindles 80, 80' move downward in the X-axis direction of the device 1, in the opposite direction of the above operation, until the optical workpieces 9 are fully received into the cleaning station 70. The cleaning station 70 is closed, and the cleaning process begins.

[0267] Now, the cycle I just described has started all over again.

[0268] According to a particularly preferred aspect of the invention, the subsequent polishing process or method can be performed by combining the apparatus 1 with the tool holder 120 and the processing tool 320 (see reference). Figures 10A to 11 ):

[0269] Once the workpiece spindles 20, 20' are loaded and the working chamber 10 is closed, the spindle plate or spindle housing 21 rotates 90° about its B-axis, thereby arranging the machining tool 320 and the workpiece 9 to be polished opposite each other.

[0270] Now, the upper tool spindle pairs 30, 30' are first fed, advanced, or moved along the Z-axis of the device 1 in a manner known per se. The length of the feed stroke or feed lift path depends on the geometry of the surface to be machined of the corresponding optical workpiece 9.

[0271] During the polishing process, only tool spindles 30 and 30' (lifting rod 314, see...) are used. Figure 7D The swing stroke or swing lift plays a role.

[0272] After the polishing process is completed, the finished polished optical workpieces 9 are removed from the working chamber 10 (single-stage polishing), or they are moved downward along the X-axis of the device 1 and arranged to face the second pair of tool spindles 31, 31', after which the polishing process starts again (two-stage polishing, pre-polishing and post-polishing).

[0273] The machining tool 320 and / or polishing foil 340 have a tool axis that forms a central axis M. WZ and / or rotation axis R WZ Typically, the tool axis corresponds to the center axis M of the workpiece spindles 20 and 20'. Ws .

[0274] In an exemplary embodiment of the polishing method, the radius of curvature of the polishing surface 341 of the polishing foil 340 is greater than the maximum radius of curvature of the optical workpiece 9, so as to create an annular contact surface when the processing tool 320 presses against the optical workpiece 9. In this way, the removal rate can be improved compared to when the radius of curvature of the point contact surface and / or the polishing surface 341 is small.

[0275] During the polishing process, the polishing surface 341 of the polishing foil 340 and the optical surface of the optical workpiece 9 to be polished are in direct contact with each other. Here, the polishing surface 341 is located on the optical surface with its entire surface.

[0276] During the polishing process, the polishing pressure remained constant within the tolerance range, from 0.01 to 0.1 N / mm. 2 between.

[0277] The diameter of the optical workpiece 9 to be polished is usually larger than the diameter of the polishing foil 340.

[0278] During the polishing process, the rotational speed of the tool spindles 30, 30'; 31, 31' is usually 1, 5 or 2 times greater than that of the workpiece spindles 20, 20', with the tool spindles 30, 30'; 31, 31' rotating at 1,500 rpm or 2,000 rpm.

[0279] In this process, the optical workpiece 9 typically rotates in the direction of arrow W, opposite to the direction of the machining tool 320, which rotates in the direction of arrow BW (see reference). Figure 11 ).

[0280] The polishing process typically lasts between 30 and 120 seconds.

[0281] During the polishing process, the two intermediate layers 330 of the machining tool 320 are compressed, with the second, softer portion 332 being compressed more than the first, harder portion 331. Typically, the intermediate layer 330 is compressed by 5% to 80%, with a compression of 10% to 25% achieving good results. The above values ​​refer to the original thickness of the intermediate layer 330.

[0282] Furthermore, the polishing foil 340 can be positioned radially, i.e., transversely to the central axis M of the tool spindles 30, 30'; 31, 31'. WZ Yielding or concession is made to accommodate variations in the radius of curvature of the surface to be polished on the optical workpiece 9 in the circumferential direction. This is, for example, the case for a toroidal surface.

[0283] For example, the intermediate layer 330 may be deflected or offset from the center processing position at the edge of the optical workpiece 9 than it is at the center of the optical workpiece 9. This results in a center offset.

[0284] Due to the seamless and / or rigid structure of the tool holder 120, the deflection and / or center offset of the machining tool 320 occurs only through the intermediate layer 330 of the two parts.

[0285] This, combined with the structure of the intermediate layer 330 having a harder first part 331 and a softer second part 332, has the effect of making the machining tool 320 and / or the central axis M of the machining tool 320 more flexible. BW It can be moved upwards to the edge of the optical workpiece 9 or beyond the edge of the optical workpiece 9, without the polishing foil 340 being lifted off the optical surface of the optical workpiece 9 to be polished.

[0286] In contrast, known devices with a hinged or jointed connection between the machining tool and the tool spindle (e.g., with a ball joint or flexible bearing) will tilt in the machining position, where the central axis of the machining tool moves beyond the edge of the optical workpiece 9, causing the polishing foil of the machining tool to lose contact with the optical surface of the optical workpiece to be polished.

[0287] Using machining tool 320, surface polishing and / or high removal rate polishing can be continuously performed with the required precision, even in the edge areas of optical workpiece 9.

[0288] The proposed polishing process or method extends the service life of the machining tool 320.

[0289] Ideally, the machining tool 320 should be changed approximately every 4 hours or approximately every 15,000 seconds.

[0290] The various aspects, features, and method steps of this invention can be implemented independently of each other, but can also be implemented in any combination or order.

[0291] The present invention particularly relates to any of the following aspects, which may be implemented independently or in any combination thereof, or in combination with any of the foregoing aspects:

[0292] 1. Equipment (1) for processing optical components (9),

[0293] It has a workspace (12),

[0294] The workspace (12) includes a pair of workpiece spindles (20, 20') for receiving and holding the optical workpiece (9) and a pair of tool spindles (30, 30') for processing the optical workpiece (9), wherein the processing tool can be received on the pair of tool spindles.

[0295] The tool spindles (30, 30') are located around their respective central axes M. WZ Rotatably arranged, at least one device for rotatably driving the pair of tool spindles (30, 30') is provided outside the workspace (12).

[0296] Specifically, an axis M is provided outside the workspace (12) for the central axis along the pair of tool spindles (30, 30'). WZ A device for linearly driving the pair of tool spindles.

[0297] Its features are,

[0298] The device for linear drive has a slider (35) on which a pair of tool spindles (30, 30') are mounted, and wherein the slider (35) is along the central axis M of the pair of tool spindles (30, 30'). WZ Linearly movable arrangement on linear guides (33, 33'; 37, 37').

[0299] 2. Equipment (1) for processing optical workpieces (9),

[0300] It has a workspace (12),

[0301] The workspace (12) includes a workpiece spindle (20, 20') for receiving and holding the optical workpiece (9) and a tool spindle with a machining tool (320) for machining the optical workpiece (9), the machining tool being received on the tool spindle.

[0302] Wherein, the tool spindle revolves around its central axis M WZ Arrangeable by rotation

[0303] The tool spindle is arranged such that it can travel along its central axis M. WZ Linear translation;

[0304] Its features are,

[0305] At least two pairs of tool spindles (30, 30'; 31, 31') are set.

[0306] At least one device for rotary drive is provided for the at least two pairs of tool spindles (30, 30'; 31, 31').

[0307] Wherein, the at least two pairs of tool spindles (30, 30'; 31, 31') are along their central axis M WZ At least one device for linear drive is provided.

[0308] 3. The apparatus according to aspect 2, characterized in that each device for linear drive has at least two sliders (35, 36), a pair of tool spindles (30, 30'; 31, 31') mounted on each slider, and wherein each slider (35, 36) is along the central axis (M) of the respective pair of tool spindles (30, 30'; 31, 31'). WZ The linear guides (33, 33'; 37, 37'; 34, 34'; 38, 38') are arranged linearly and movable.

[0309] 4. The device according to any one of the foregoing aspects, characterized in that a processing device (100) for processing the optical workpiece (9) is disposed outside the workspace (12) on a first side of the workspace (12), and wherein at least one device for linear drive is disposed on a second side of the workspace (12), the second side being opposite to the first side of the workspace (12).

[0310] 5. The apparatus according to any one of the foregoing aspects, characterized in that each device for rotary drive synchronously and rotaryly drives a pair of tool spindles (30, 30'; 31, 31').

[0311] 6. The device according to any one of the foregoing aspects, characterized in that each device for linearly driving a corresponding pair of tool spindles (30, 30'; 31, 31') further includes a toothed rack (41, 41'), the toothed rack being fixed to the corresponding slider (35, 36) and engaging with a rotatably driven toothed wheel (42, 42').

[0312] 7. The device according to any one of the foregoing aspects, characterized in that each device for linear drive is arranged on at least one substrate (32).

[0313] 8. The device according to aspect 7, characterized in that a substrate (32) is provided, wherein a first device for linear drive is arranged on the upper side (32a) of the substrate (32), and a second device for linear drive is arranged on the lower side (32b) of the substrate.

[0314] 9. The device according to aspect 8, characterized in that the second device for linear drive is arranged substantially mirror-image of the first device for linear drive, the substrate (32) forming a mirror plane.

[0315] 10. The apparatus according to any one of the foregoing aspects, characterized in that each tool spindle (30, 30'; 31, 31') is connected to a tool holder (120), and the machining tool (320) is rigidly received or held on the tool holder.

[0316] 11. A method for processing optical components (9),

[0317] Its features are,

[0318] The pre-machining step is performed using a first pair of tool spindles (30, 30'), on which a first machining tool (320) is received.

[0319] Furthermore, the subsequent pre-processing step is performed using a second pair of tool spindles (31, 31'), on which a second machining tool (320) is received.

[0320] List of reference numerals

[0321] 1 Equipment

[0322] 2. Outer shell

[0323] Part of 3.2

[0324] 4 Conveying device

[0325] 4' Conveying Container

[0326] 5. Control Panel

[0327] 6. Components of the machine frame

[0328] 8. Blocking components

[0329] 9 Optical components

[0330] 10 Working Chambers

[0331] 11. Chamber shell

[0332] 12 Workspace

[0333] 20' Workpiece spindle

[0334] 21 Spindle Housing

[0335] 22 B-shaft housing

[0336] 23 B-shaft flange

[0337] 24 X-axis motors

[0338] 25 Rotary Drive

[0339] 26 Gear Motor

[0340] 30' 30' tool spindle pair (e.g., for pre-polishing)

[0341] 31, 31' tool spindle pair (e.g., for post-polishing)

[0342] 32 substrate

[0343] 32a Upper side of substrate

[0344] The lower side of the 32b substrate

[0345] 33' upper guide rail pair

[0346] 34' and 34' lower guide rails

[0347] 35 Upper sliding component

[0348] 36 Lower sliding component

[0349] 37' Upper guide carriage

[0350] 38' Lower guide carriage

[0351] 39' and 39' cages

[0352] 41, 41' serrated strips

[0353] 42, 42' toothed gears

[0354] 43' motor

[0355] 44, 44' (V-shaped ribs) band

[0356] 45' and 45' pulleys

[0357] 46' motor

[0358] 47, 47' Devices for rotary drive

[0359] 48, 48' Devices for linear drive

[0360] 50 Devices for tool inspection

[0361] 51 Vertical laser beam

[0362] 52. Slanted laser beam

[0363] 53 Cable

[0364] 54 Positioning elements

[0365] 55 Positioning Plate

[0366] 56. Bearing components

[0367] 57 Guide rails / rail profiles

[0368] 58 Guide carriage

[0369] 59. Pneumatic or hydraulic cylinders

[0370] 59' Connecting element

[0371] 61 Guide rail / rail type

[0372] 62 Pneumatic or hydraulic cylinders

[0373] 62' Connecting element

[0374] 70 Cleaning Station

[0375] 71 Casing

[0376] 72 Partition wall

[0377] 73 Cover plate

[0378] 74 recess

[0379] 75 lids

[0380] 76 Hydraulic or pneumatic cylinders

[0381] 77 motor

[0382] 78a and 78b pulleys

[0383] 78' The concave parts of 78a and b

[0384] 79 V-shaped ribs

[0385] 80' and 80' workpiece spindles

[0386] 81 substrate

[0387] 82 Lifting Cylinder

[0388] 83, 83' sensors

[0389] 84a, 84b Cleaning fluid nozzles

[0390] 85a, 85b Cleaning fluid jet

[0391] 86a, 86b Compressed Air Nozzles

[0392] 87a, 87b Compressed Air Pulse

[0393] 90 chuck

[0394] 91 Positioning Ring

[0395] 91a Upper side of the positioning ring

[0396] 92 Gripping Components

[0397] 93 Inner Panel

[0398] 94. Center opening

[0399] 95 lifting rod

[0400] 96 Lifting Piston

[0401] 97 Piston Plate

[0402] 98 Compression Spring

[0403] 98a First Seat

[0404] 98b Second Seat

[0405] 100 processing device

[0406] 101 U-shaped slewing arm

[0407] 101' 101's axis of rotation

[0408] 102 Horizontal support bar

[0409] 102' 102' axis of rotation

[0410] 103, 103' Holding device

[0411] 104 Keep arm

[0412] 105 Rotary Drive

[0413] 106 Belt Driver

[0414] 107 First Pickup Device

[0415] 108 Second Pickup Device

[0416] 110 Slider

[0417] 111 Guide carriage

[0418] 112 guide rail

[0419] 113 Motor

[0420] 120 Tool Holder

[0421] 121 Circular Cage Head

[0422] 121' 121's outer wall

[0423] 122 collar

[0424] 123 Outer edge of the ring

[0425] 124 Positioning element / positioning lug

[0426] 124a 124's head

[0427] 125 Columnar extension

[0428] 126 Circular Cage Body

[0429] 127 Corrugated Pipe

[0430] 127' First free end of the bellows

[0431] The second free end of the 127” bellows

[0432] 127a Inner Ring Circumferential Pressure Bead

[0433] 128 clamping parts

[0434] 129 discs

[0435] 129a Ring Spring

[0436] 130 spindle flange

[0437] 131 collar

[0438] 132 Circumferential Indentation

[0439] 133 Spindle Plate

[0440] 134 recess

[0441] 135 Spring Element

[0442] 135' Free end of spring element

[0443] 310 Spindle Head

[0444] 311 Corrugated Pipe

[0445] 312 bolts

[0446] 312a Bolt Head

[0447] 312B Annular Recess

[0448] 313 Spindle

[0449] 314 Lifting Rod

[0450] 315 blocks

[0451] 315a 315 free surface

[0452] 316 lifting cylinder

[0453] 320 Machining Tools

[0454] 321 matrix

[0455] 322 base plate

[0456] 323a Workpiece side base surface

[0457] 323b recess

[0458] 324a spindle side base surface

[0459] 324b recess

[0460] 325 RFID chip

[0461] 326 Spring element (cubic)

[0462] 326' 326's free end

[0463] 326a 326 internal chamfer

[0464] 326b 326's side chamfer

[0465] 327 Spring Element

[0466] 327' Receiving opening

[0467] 327” narrow area

[0468] 328 Longer support legs

[0469] 328' 328's free end

[0470] 328a 328 internal chamfer

[0471] 329 Shorter support leg

[0472] 329' 329's free end

[0473] 329” 329’s edge

[0474] 330 Intermediate Layer

[0475] Part 1 of 331 and 330

[0476] Part 2 of 332 330

[0477] 340 Polishing Foil

[0478] 341 Polished surface

[0479] B axis

[0480] BB direction

[0481] BW Rotation Direction (Tool)

[0482] C direction

[0483] F1 Direction of force

[0484] F2 Direction of force

[0485] D Compressed air

[0486] H swing stroke

[0487] M BW The central axis of the machining tool

[0488] M W The central axis of the workpiece

[0489] M Ws The central axis (X direction) of the workpiece spindle

[0490] M WZ tool spindle center axis

[0491] R BW Rotation axis of machining tool

[0492] R RWS The axis of rotation of the workpiece spindle used for cleaning.

[0493] R W Workpiece rotation axis

[0494] R WS axis of rotation of the workpiece spindle

[0495] R WZ axis of rotation of the tool spindle

[0496] W: Rotation direction (workpiece)

[0497] X-axis / direction

[0498] Y-axis / direction

[0499] Z-axis / direction

Claims

1. Equipment (1) for processing optical workpieces (9), The device (1) has a workspace (12). in, In the workspace (12), a pair of workpiece spindles (20, 20') for receiving and holding the optical workpiece (9) and a pair of tool spindles (30, 30') having a machining tool (320) for machining the optical workpiece (9) are arranged, the machining tool being able to be received on the pair of tool spindles. Wherein, an axis (M) is provided outside the workspace (12) for the central axis (M) along the pair of tool spindles (30, 30'). WZ (48) A device for linearly driving the pair of tool spindles. The device (48) for linear drive has a slider (35) on which the pair of tool spindles (30, 30') are mounted, and wherein the slider (35) is along the central axis (M) of the pair of tool spindles (30, 30'). WZ The linear guides (33, 33'; 37, 37') are linearly and movably arranged on the linear guides. Its features are, The tool spindle (30, 30') rotates around its respective central axis (M) WZ The two are rotatably arranged, and a common device (47) for synchronously rotating and driving the pair of tool spindles (30, 30') is provided outside the workspace (12).

2. Equipment (1) for processing optical workpieces (9), The device (1) has a working chamber (10) and the working chamber (10) has a chamber shell (11) that encloses the working space (12). in, The workspace (12) is provided with a workpiece spindle (20, 20') for receiving and holding the optical workpiece (9) and a tool spindle having a machining tool (320) for machining the optical workpiece (9), the machining tool being received on the tool spindle. Wherein, the tool spindle revolves around its central axis (M) WZ It can be rotatably arranged. The tool spindle is arranged such that it can move along its central axis (M). WZ Linear translation; Its features are, At least two pairs of tool spindles (30, 30'; 31, 31') are provided in the workspace (12). At least one device (47) for rotary drive is provided for the at least two pairs of tool spindles (30, 30'; 31, 31'). Wherein, the at least two pairs of tool spindles (30, 30'; 31, 31') are along their central axis (M) WZ At least one device (48) for linear drive is provided.

3. The device according to claim 1 or 2, characterized in that, A pair of tool spindles (30, 30') each have a common device (47) for rotary drive and / or a common device (48) for linear drive.

4. The device according to claim 1 or 2, characterized in that, At least one or each of the devices (48) for linear drive has at least two sliders (35, 36), or wherein the two devices (48, 48') for linear drive are configured to each have one slider (35, 36), wherein a pair of tool spindles (30, 30'; 31, 31') are mounted on each slider (35, 36), and wherein each slider (35, 36) is along the central axis (M) of the respective pair of tool spindles (30, 30'; 31, 31'). WZ The components are arranged linearly and movable on linear guides (33, 33'; 37, 37'; 34, 34'; 38, 38').

5. The device according to claim 1 or 2, characterized in that, A processing device (100) for processing the optical workpiece (9) is disposed outside the workspace (12) on a first side of the workspace (12), and wherein at least one device (48) for linear drive is arranged on a second side of the workspace (12), the second side being opposite to the first side of the workspace (12).

6. The device according to claim 5, characterized in that, The processing device (100) is designed to move linearly along the axis of the equipment (1), such that the processing device (100) can approach both the working chamber (10) forming the working space (12) and the cleaning station (70).

7. The device according to claim 1 or 2, characterized in that, Each or at least one device (47) for rotary drive synchronously drives a pair of tool spindles (30, 30'; 31, 31') in a rotary manner, and / or wherein each or at least one device (48) for linear drive synchronously drives a pair of tool spindles (30, 30'; 31, 31') in a linear manner.

8. The device according to claim 1 or 2, characterized in that, Each or at least one of the devices (48) for linearly driving a pair of corresponding tool spindles (30, 30'; 31, 31') further includes a toothed rack (41, 41') fixed to a corresponding slider (35, 36) and engaging with a rotatably driven toothed wheel (42, 42').

9. The device according to claim 1 or 2, characterized in that, Each or at least one device (48) for linear drive is arranged on at least one substrate (32).

10. The device according to claim 9, characterized in that, Set only one substrate (32), and / or in which, A first device (48) for linear drive is arranged on the upper side (32a) of the substrate (32), and a second device (48') for linear drive is arranged on the lower side (32b) of the substrate.

11. The device according to claim 10, characterized in that, The second device (48') for linear drive is arranged to be substantially mirror image of the first device (48) for linear drive, and the substrate (32) forms a mirror plane.

12. The device according to claim 1 or 2, characterized in that, Each tool spindle (30, 30'; 31, 31') is connected to a tool holder (120), on which the machining tool (320) is rigidly received or held.

13. The device according to claim 1 or 2, characterized in that, The device (1) includes a means (50) for tool inspection so as to detect damage or even total loss of the machining tool (320).

14. The device according to claim 13, characterized in that, The first laser beam (51) of the tool inspection device (50) is configured to inspect the machining tool (320) received on the first pair of tool spindles (30, 30'), and the second laser beam (52) of the tool inspection device (50) is configured to inspect the machining tool (320) received on the second pair of tool spindles (31, 31').

15. The device according to claim 1 or 2, characterized in that, The equipment (1) includes a cleaning station (70).

16. The device according to claim 15, characterized in that, Each workpiece spindle (80, 80') or each optical workpiece (9) of the cleaning station (70) is provided with two cleaning fluid nozzles (84a, 84b) and two compressed air nozzles (86a, 86b), and / or, the cleaning station (70) or the workpiece spindle (80, 80') of the cleaning station includes a chuck (90) for receiving the optical workpiece (9), the chuck (90) having a positioning ring (91) and three gripping elements (92), the positioning ring being received and fixed in a suitable recess at the free end of the workpiece spindle (80, 80'), the three gripping elements being integrally connected to the upper side (91a) of the positioning ring (91) to form a flexible bearing or flexible hinge.

17. The device according to claim 1 or 2, characterized in that, The device (1) is used to polish the optical workpiece (9).

18. The device according to claim 1 or 2, characterized in that, The optical component (9) is a lens or spectacle lens.

19. The device according to claim 2, characterized in that, The device (1) includes the features of claim 1.

20. The device according to claim 1, characterized in that, The device (1) has a working chamber (10) having a chamber shell (11) that encloses the working space (12).

21. The device according to claim 20, characterized in that, At least two pairs of tool spindles (30, 30'; 31, 31') are set within the workspace (12).

22. A method for processing optical workpieces (9), Its features are, The device (1) according to any one of the preceding claims is used to process the optical workpiece (9).

23. A method for processing optical workpieces (9), Its features are, The pre-machining step is performed using a first pair of tool spindles (30, 30'), on which a first machining tool (320) is received, and the subsequent post-machining step is performed using a second pair of tool spindles (31, 31'), on which a second machining tool (320) is received, and The first pair of tool spindles (30, 30') or the second pair of tool spindles (31, 31') are synchronously linearly driven by a common linear drive (48) and / or synchronously rotary driven by a common rotary drive (47).

24. The method according to claim 22 or 23, characterized in that, The tool (320) is pneumatically biased against the workpiece (9) during processing.

25. The method according to claim 22 or 23, characterized in that, The method is used to polish the optical workpiece (9).

26. The method according to claim 22 or 23, characterized in that, The optical component (9) is a lens or spectacle lens.

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