Abstract: A device for the fine machining of optically active surfaces in particular spectacle lenses, has a spindle shaft which has a tool-holder portion and is mounted in a spindle housing such that it can rotate about a tool rotation axis. The device has an electric rotary drive with a rotor and a stator that rotates the spindle shaft operatively connected to the rotor about the tool rotation axis. The tool-holder portion can be displaced axially in the direction of the tool rotation axis. The rotor and the stator parts are axially guided in a guide tube along the tool rotation axis. The spindle shaft is in the form of a hollow shaft, via which the tool-holder portion, which is configured to hold a membrane chuck, can be subjected to a fluid.

Abstract: An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.

Abstract: A device for finish-machining of the optically effective surfaces of, in particular, spectacle lenses has a spindle shaft, which has a tool mount section and which is mounted in a spindle housing to be rotatable about a workpiece rotational axis (A). An electric rotary drive has a rotor and a stator by which the spindle shaft operatively connected with the rotor is drivable to rotate about the tool rotational axis. An adjusting device axially displaces the tool mount section with respect to the spindle housing in the direction of the tool rotational axis (linear movement Z). The rotor and the stator are arranged coaxially with the spindle shaft, wherein at least the rotor together with the spindle shaft is axially displaceable with respect to the spindle housing in the direction of the tool rotational axis by the adjusting device.

Abstract: A device (10) for finish-machining of optically effective surfaces of workpieces, in particular spectacle lenses (L, L?), is disclosed, comprising at least one workpiece spindle (30, 30?), to which a workpiece can be clamped, at least one tool spindle (28, 28?), which is movable relative to the workpiece spindle and at which a tool (46) for machining the workpiece can be mounted, and a loading system (22) for bringing a workpiece to and taking it away from the workpiece spindle and bringing a tool to and taking it away from the tool spindle. The loading system comprises a loading head (82), which is separate from workpiece spindle and tool spindle, with at least one loading section (102, 102?) equipped with at least one mount (106, 106?) for a workpiece and at least one mount (104, 104?) for a tool, so that both the tool and the workpiece can be loaded in a time-saving single loading process.

Abstract: A device for the fine machining of optically active surfaces in particular spectacle lenses, has a spindle shaft which has a tool-holder portion and is mounted in a spindle housing such that it can rotate about a tool rotation axis. The device has an electric rotary drive with a rotor and a stator that rotates the spindle shaft operatively connected to the rotor about the tool rotation axis. The tool-holder portion can be displaced axially in the direction of the tool rotation axis. The rotor and the stator parts are axially guided in a guide tube along the tool rotation axis. The spindle shaft is in the form of a hollow shaft, via which the tool-holder portion, which is configured to hold a membrane chuck, can be subjected to a fluid.

Abstract: A device (10) for finish-machining of optically effective surfaces of workpieces, in particular spectacle lenses (L, L?), is disclosed, comprising at least one workpiece spindle (30, 30?), to which a workpiece can be clamped, at least one tool spindle (28, 28?), which is movable relative to the workpiece spindle and at which a tool (46) for machining the workpiece can be mounted, and a loading system (22) for bringing a workpiece to and taking it away from the workpiece spindle and bringing a tool to and taking it away from the tool spindle. The loading system comprises a loading head (82), which is separate from workpiece spindle and tool spindle, with at least one loading section (102, 102?) equipped with at least one mount (106, 106?) for a workpiece and at least one mount (104, 104?) for a tool, so that both the tool and the workpiece can be loaded in a time-saving single loading process.

Abstract: A device for finish-machining of the optically effective surfaces of, in particular, spectacle lenses has a spindle shaft, which has a tool mount section and which is mounted in a spindle housing to be rotatable about a workpiece rotational axis (A). An electric rotary drive has a rotor and a stator by which the spindle shaft operatively connected with the rotor is drivable to rotate about the tool rotational axis. An adjusting device axially displaces the tool mount section with respect to the spindle housing in the direction of the tool rotational axis (linear movement Z). The rotor and the stator are arranged coaxially with the spindle shaft, wherein at least the rotor together with the spindle shaft is axially displaceable with respect to the spindle housing in the direction of the tool rotational axis by the adjusting device.

Abstract: An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.

Abstract: A method for machining particularly spectacle lenses by means of a machine which comprises at least one cutting unit and at least one turning unit in a common working space, wherein at least two spectacle lenses are machined at the same time in the working space, one of said spectacle lenses being cut while the other is turned. The machine frames of the cutting unit and of the turning unit are essentially decoupled from one another in terms of vibration and/or at least two machining units of the machine comprise workpiece spindle units for generating a transverse movement of the spectacle lens to be machined with respect to the respective tool, the workpiece spindle units being arranged essentially perpendicular to one another. As a result, it is possible for spectacle lenses to be machined in an extremely short time with high machining performance and with high surface precision and quality.

Abstract: A method for machining particularly spectacle lenses by means of a machine which comprises at least one cutting unit and at least one turning unit in a common working space, wherein at least two spectacle lenses are machined at the same time in the working space, one of said spectacle lenses being cut while the other is turned. The machine frames of the cutting unit and of the turning unit are essentially decoupled from one another in terms of vibration and/or at least two machining units of the machine comprise workpiece spindle units for generating a transverse movement of the spectacle lens to be machined with respect to the respective tool, the workpiece spindle units being arranged essentially perpendicular to one another. As a result, it is possible for spectacle lenses to be machined in an extremely short time with high machining performance and with high surface precision and quality.

Abstract: Method for inputting signals into and outputting signals out of subareas of the auxiliary signals of transport modules of a synchronous digital signal hierarchy.The invention is based on the object of specifying a method for outputting signals from at least one subarea of the auxiliary signals and for inputting signals into at least one subarea of the auxiliary signals of transport modules of a synchronous digital signal hierarchy according to the CCITT Draft Recommendations G.70X, G.70Y and G.70Z.This object is achieved during outputting in that a subarea of the auxiliary signals is output from the transport module (STM-4) in a demultiplexing and spreader means (1a) and is spread over a time span within the frame. The spread signal, for example, is resolved into the auxiliary signals (TB-STM-4) of the selected subarea that are allocated to the transport modules of the lowest hierarchy level contained in the transport module (STM-4).