摘要:
A machining method for an eyeglass lens blank in which a bock piece is connected, by way of a connecting material, to a first side of the eyeglass lens blank for holding and supporting the eyeglass lens blank in a processing machine, wherein to this end a cavity is made between the block piece and the first side, at least using a sealing or supporting means, wherein the sealing or supporting means has an inner diameter Dd, Ds and sits against the first side in a sealing manner, the connecting material is filled into the cavity or connecting material is provided in the cavity and then the connecting material is cured, the eyeglass lens blank is placed into a milling and/or turning or grinding machine by way of the block piece cast on by way of the connecting material, wherein the eyeglass lens blank is supported on the first side by the connecting material across a diameter Dv that corresponds to the diameter Dd, Ds and wherein the blank and the connecting material are worked off in one of the following machining processes. An eyeglass lens blank having a diameter Dr, said blank being fastened to a block piece through the cast-on connecting material, wherein the connecting material has an outer diameter Dv. The diameter Dv is at most 2 mm to 6 mm, in particular at most 4 mm and is less than diameter Dr.
摘要:
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 the axial direction relative to the axis of rotation in order to perform a tool change, wherein at least one locking element is provided which can be positioned against the tool change arm in the circumferential direction U such that a positive and/or non-positive joint results. A tool change arm of a polishing machine for optical surfaces, comprising a holding element intended to hold a polishing head having an axis of rotation, the holding element being positionable against a transport element of the polishing head in the axial direction in order to perform a tool change, wherein at least one guiding part is provided which, in relation to the polishing head, can be positioned against the polishing head in the circumferential direction U relative to the axis of rotation such that a positive and/or non-positive joint results.
摘要:
The invention relates to a machining machine for lenses, which comprises a first workpiece drive, configured as the transport receptacle and having a workpiece spindle, a workpiece changer for exchanging workpieces between the workpiece drive and a workpiece stock, and a machining station for machining a workpiece. The workpiece spindle of the workpiece drive can be rotated about an axis of rotation (c1). The workpiece drive can be swiveled about a first swiveling axis (b1) which is arranged at a right angle to the axis of rotation (c1). The work piece drive can be rotated about an axis of rotation (k) which is arranged at a right angle to the first swiveling axis (b1). The machining machine according to the invention is characterized in that at least one further workpiece drive is provided and has a spindle that can be rotated about a respective axis of rotation (c1, c2). Both workpiece drives can be swiveled about a first swiveling axis (b1, b2) which is arranged at a right angle to the respective axis of rotation (c1, c2). Both workpiece drives can be displaced and driven in a translatory manner about a translatory axis of displacement (x1, x2) which is arranged at a right angle to the first swiveling axis (b1, b2). Both workpiece drives can be rotated together about the axis of rotation (k).
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A method for polishing lens surfaces, in which a) prior to the polishing process, for the purpose of determining an abrasion profile, at least one point of a workpiece is polished by means of a polishing tool to be used, using at least one pre-defined parameter; b) the polishing abrasion thus achieved on the workpiece side is determined by measuring; c) on the basis of the abrasion profile, at least one parameter is set for a subsequent polishing process, and the polishing process is completed at least partially. A method for polishing lens surfaces, in which the polishing point is places at least outside of the workpiece centre at a distance a from a plane which is tensioned by the tool spindle axis and the workpiece spindle axis. The invention furthermore relates to a lens polishing machine in which at least one movement axis is provided, by means of which a distance a between the polishing point and a plane which is tensioned by the tool spindle axis and the workpiece spindle axis can be set and/or changed.
摘要:
The invention relates to a method for machining and estimating an optical lens which is designed as a semi-finished product, with a pre-finished form of a first side and a second side to be machined, in which a pre-specified form of a surface of the second side to be machined is estimated, wherein prior to estimating the pre-specified form of the surface of the second side, an actual form of the surface of the first side is measured using measuring means and is incorporated into the estimation of the pre-specified form of the surface of the second side.
摘要:
The invention refers to a polishing tool for optical lenses with at least one polishing pad adaptable at least partially to the shape of a lens surface of said lenses and drivable by means of a drive shaft, said polishing pad having a membrane, wherein said polishing pad can transmit a bearing force of said membrane at least in an orthogonal direction relative to a lens surface. Moreover, the polishing tool comprises a reinforcing member connectable to said membrane, said reinforcing member being dimensionally stable in a parallel direction relative to a surface of said membrane and being flexible and/or pliable in an orthogonal direction relative to the surface of said membrane, wherein at least one pressure pad with a pressure membrane is arranged within said polishing pad, wherein said pressure membrane can be made to bear and/or can be prestressed against said membrane or said reinforcing member in an indirect or in a direct manner.