Abstract: A device and a method for machining of a border of an optical lens in which the transition of the lens material to a blocking material or film material which adjoins along a border edge is optically detected in order to determine the shape of the border edge.

Abstract: A device and a method for polishing of an optical lens by means of rotary tool are proposed, a fixture for the lens being pivotable around a pivoting axis transversely to the axis of rotation by means of a push-rod adjustment and being pivotable up out of a machining position such that the lens can be changed from overhead. This allows a compact structure and easy changing of the lens.

Abstract: A method for control of a drive for a tool or workpiece uses pilot control and a device with a control apparatus, the pilot control taking place depending on a frequency of movement which corresponds to a reference variable. In this way, a contouring error can be advantageously reduced.

Abstract: A block piece for holding an optical lens to be worked in a machine tool, the block piece having a rotational axis 1.1, a holding surface that can be made to face the lens and a bearing surface that is directed radially outwards and can be brought to bear in a workpiece spindle, wherein the holding surface has at least one recess 1.2a or a number of recesses 2.1-2.6, which are distributed around the rotational axis 1.1, have a diameter DA and serve for receiving bonding compound for adhesive bonding to the lens.

Abstract: A polishing device for polishing optical lenses having a tiltable base part for directly or indirectly receiving a polishing plate, which base part is connected to a polishing spindle having an axis of rotation D in order to be rotationally driven, wherein a rotary joint for supplying a polishing agent is provided, which rotary joint is at least partly arranged opposite said polishing spindle, relative to the base part, and a coupling element is provided by means of which the rotary joint can be detachably push-fitted or clipped onto a polishing spindle. A method for polishing selected zones of aspherical lenses which are not rotationally symmetric using a polishing plate which is guided by a polishing spindle so as to be tiltable, wherein during polishing, a polishing agent is introduced between said polishing plate and the lens via a rotary joint arranged between said polishing spindle and said polishing plate.

Abstract: A subassembly with a supporting element for a machine bed of a lathe, and of a machining unit which is arranged on the supporting element and has a machining axis, wherein a solid-body joint, via which the machining unit is arranged in a movable manner on the supporting element, is provided. A lathe for plastics spectacle lenses, having a machine bed, having a tool mount or workpiece mount which is arranged at least indirectly on the machine bed, and having a subassembly which is arranged at least indirectly on the machine bed, wherein the workpiece and the tool can be oriented in relation to one another via the solid-body joint.

Abstract: A polishing head for use in a polishing machine for optical surfaces, having an axis of rotation and a base body having a holding structure intended to be arranged at a polishing spindle and having a transport element intended to be held at a tool change arm, the transport element being positionable against a holding element of the tool change arm in order to perform a tool change, wherein at least one locking element is provided which can be positioned against the tool change arm such that a positive and/or non-positive joint results.

Abstract: A device for blocking eyeglass lenses onto blocks using a bonding mass, by which the eyeglass lens is connected to the block in a form-fit and/or force-closed manner, having several stations, between which the eyeglass lens and/or the block is transported, at least one blocking station, in which the block is connected to the eyeglass lens using the bonding mass, a transport arm having a retaining head arranged thereon for positioning the eyeglass lens in the blocking station, wherein the transport arm is designed as a pivot arm and has at least one pivot axis (S1), by means of which the transport arm and the retaining head can be moved between at least two stations, and at least one conveying arm having a retainer for the block or an eyeglass lens, wherein the conveying arm has a pivot axis (S2), which is arranged parallel or coaxial to the pivot axis (S1) and by which the retainer can be moved between at least two stations.

Abstract: A device, a tool, and a method for machining, especially polishing, of an optical lens by means of a tool are proposed, an information medium on one working surface of the tool being optically acquired and removed as the lens is machined and thus the state of the tool being indicated.

Abstract: An apparatus and a method for processing an optical lens, whereby a block piece for the lens is first processed by cutting and then is provided with markings for positioning the lens on the block piece.

Abstract: A block piece for holding an optical lens to be machined, with a coupling part for being held in a workpiece chuck and with a holding part for fastening the lens. The holding part has a convex or concave holding surface corresponding to a first side of the lens. The holding surface is, according to the shape of the lens to be held, provided in the form of a negative free-forming surface, and the block piece is made from a plastic that can be machined.

Abstract: A method for placing an optical lens, with a first side and a second side, on a block piece for holding the optical lens and which has a coupling part for holding the block piece in a workpiece chuck and with a holding part for fastening the lens. The holding part has a convex or concave holding surface corresponding to a first side of the lens. The holding surface is, according to the shape of the lens to be held, provided in the form of a negative free-forming surface, and the block piece is made from a plastic that can be machined.

Abstract: A method for producing a semi-finished product for a plus or minus power lens having a toroidal or atoroidal back that is configured as a prescription surface. According to the method, a blank having a diameter DR and a front having a radius of curvature rV is fixed on its front for the purpose of machining the back and is subjected to cutting, the prescription surface being produced only across a part of the diameter D.

Abstract: A linear drive for a machine tool having a housing, having a carriage, which is mounted so it is axially movable in the housing via two bearings, and has a central axis and a length, and having at least one first motor, having a first motor element and a second motor element, wherein said first motor element is disposed on the carriage and the second motor element is disposed on the housing, wherein the first motor element is implemented on the carriage as a primary part and the second motor element is implemented on the housing as a secondary part. A method for moving a carriage for a lathe tool of a highly-dynamic machine tool employing a crossed roller bearing for mounting the carriage, wherein all roller bodies of the crossed roller bearing are always operationally linked to a carriage-side bearing surface, and the carriage is driven at an oscillation frequency of at least 50 Hz, in particular between 60 Hz and 200 Hz.

Abstract: A polishing machine for lenses with at least one first polishing spindle having a polishing axis (K) and a tool holder disposed on the first polishing spindle for a first polishing disc designed as a tool, further comprising at least one first workpiece spindle having a rotary axis (C) and a workpiece holder disposed on the first workpiece spindle for a lens, wherein the workpiece holder and the tool holder are disposed so as to be movable in translation in the direction of a telescoping axis (Z) disposed parallel to the polishing axis (K) and in the direction of a translation axis (X) disposed at right angles to the rotary axis (C).

Abstract: Proposed is a cheap and durable high-temperature heat store which utilizes ambient air as a heat carrier medium and which is at least partially filled with a granular and/or porous storage medium (6).

Abstract: The invention relates to a linear drive for a machine tool having a housing, having a carriage, which is mounted so it is axially movable in the housing via two bearings, and has a central axis and a length, and having at least one first motor, having a first motor element and a second motor element, wherein said first motor element is disposed on said carriage and said second motor element is disposed on said housing, wherein said first motor element is implemented on said carriage as a primary part and said second motor element is implemented on said housing as a secondary part. Furthermore, the invention relates to a method for moving a carriage for a lathe tool of a highly-dynamic machine tool employing a crossed roller bearing for mounting the carriage, wherein all roller bodies of said crossed roller bearing are always operationally linked to a carriage-side bearing surface, and said carriage is driven at an oscillation frequency of at least 50 Hz, in particular between 60 Hz and 200 Hz.

Abstract: An apparatus and a method for processing an optical lens are proposed, whereby the desired optical data of the lens can be input into the device and lens-production data and/or geometric data of the lens are determined therefrom to control the processing of a surface side of the lens.

Abstract: A method and an arrangement for determining the coordinates K of at least one point P1 on an edge of an optical lens, wherein the lens is held/can be positioned, by a retaining device, with the edge which is to be measured in an optical path of an optical micrometer, whereby the lens is held/can be positioned with the edge in the optical path, a coordinate Za is determined for the point P1, a variation of the relative position between the lens and the optical path is made, which is based on a pivotal axis S, a coordinate Zb is determined in the new position B for the point P1, and the coordinates Ya and Yb are determined.

Abstract: A device and a method for processing an optical lens are proposed, whereby lens-production data and/or geometric data of the lens are determined from desired optical data of the lens when a corresponding activation code is acquired. Preferably, the lens or a block piece and/or an assigned shipping container is/are provided with the activation code and/or other information relative to the lenses that are to be processed.