| Patent application number | Description | Published |
|---|
| 20100151772 | Polishing head for the zonal machining of optical spectacle surfaces - A polishing head for spectacle surfaces with a basic body for attachment to a polishing spindle, with an elastic supporting part for a polishing film which is or can be attached, wherein the supporting part comprises a recess with a wall surface and a depth t, and the polishing film comprises at least one hole, wherein the hole forms an access to the recess, wherein the polishing film comprises in addition to the hole at least one further hole, which is arranged in the area of an edge of the recess and is at a radial distance a from the hole, wherein the further hole forms an outlet channel for polishing agent from out of the recess or the wall surface is raised at least over one section of the depth t, and/or with reference to a circumference, at least in segments in relation to the rotational axis D at an angle α, and/or the supporting part comprises at least one groove which is provided in the front side with a groove base and a depth t | 06-17-2010 |
| 20100159809 | Polishing device with potary joint - 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. | 06-24-2010 |
| 20100165330 | Method for machining and estimating an optical lens designed as a smei-finished product - 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. | 07-01-2010 |
| 20100184361 | Polishing head and tool change arm for a polishing head - 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. | 07-22-2010 |
| 20100190415 | Device and a method for polishing lenses - 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. | 07-29-2010 |
| 20100224039 | Lathe for manufacturing ophthalmic lenses made of plastic - A turning machine for producing non rotationally symmetric surfaces of synthetic spectacle lenses, having a support plane E, a machine bed made of cast iron with a width b | 09-09-2010 |
| 20100226729 | Cutting head for a milling machine for manufacturing ophthalmic lenses made of plastic - A milling head for a milling machine for producing synthetic spectacle lenses, comprising a rotational axis, a coupling part for tensioning into a milling spindle chuck, a shoulder which connects to the coupling part with a contact surface for the milling spindle chuck, a shaft which is connected to the shoulder and a blade collar with an outer diameter D which is connected to the shaft and which comprises several cutting plates with a radius R, wherein between the blade collar at the height of the outer diameter D and the contact surface, a free length L is provided. The measurement of the free length L in relation to the measurement of the outer diameter D and the measurement of the radius R fulfills the following condition: ILI=0.18 (IDI−2IRI)+54±a, with a maximum deviation a of 3. | 09-09-2010 |
| 20110050005 | LINEAR DRIVE FOR A MACHINE TOOL AND METHOD FOR MOVING A TOOL CARRIAGE - 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. | 03-03-2011 |
| 20110096290 | METHOD FOR MACHINING AN EYEGLASS LENS BLANK AND EYEGLASS LENS BLANK COMPRISING A CONNECTING MATERIAL AND BLOCK PIECE - 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. | 04-28-2011 |
