초록 ▼

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 c

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.

대표청구항 ▼

We claim: 1. A method for machining spectacle lenses as workpieces by means of a machine which comprises a cutting unit with a first machine frame and a turning unit with a second machine frame, and a common machine pedestal for mounting said machine frames, wherein said machine frames delimit a co

We claim: 1. A method for machining spectacle lenses as workpieces by means of a machine which comprises a cutting unit with a first machine frame and a turning unit with a second machine frame, and a common machine pedestal for mounting said machine frames, wherein said machine frames delimit 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 by the cutting unit while the other is turned by the turning unit, and wherein said machine frames are essentially decoupled from one another in terms of vibration in that at least one of said machine frames is mounted on the common machine pedestal via vibration decoupling elements in the form of spring elements. 2. A machine for machining spectacle lenses, comprising a cutting unit with a first machine frame, a turning unit with a second machine frame, and a common machine pedestal for mounting said machine frames, wherein said machine frames delimit a common working space in which the spectacle lenses can be machined at the same time by the cutting unit and the turning unit, and wherein said machine frames are essentially decoupled from one another in terms of vibration in that at least one of said machine frames is mounted on the common machine pedestal via vibration decoupling elements in the form of spring elements. 3. A machine according to claim 2, wherein the machine frame of the cutting unit and the machine frame of the turning unit do not make contact with one another. 4. A machine according to claim 2, wherein both the machine frame of the cutting unit and the machine frame of the turning unit are mounted on the common machine pedestal via vibration decoupling elements. 5. A machine according to claim 4, wherein the vibration decoupling elements are air spring elements. 6. A machine according to claim 2, wherein the machine frames of the cutting and turning units are made of polymer concrete. 7. A machine according to claim 2, wherein each of the cutting and turning units is assigned a respective workpiece spindle unit which comprises a workpiece spindle with a workpiece rotation axis, wherein each workpiece spindle can be moved by means of a cross table arrangement in a CNC-controlled manner in a plane which contains the respective workpiece rotation axis. 8. A machine according to claim 7, wherein the cross table arrangement of each workpiece spindle unit comprises guide rails and slides, wherein at least the guide rails and the slides of the workpiece spindle units are designed as identical parts. 9. A machine according to claim 2, wherein the turning unit comprises at least two fast tool arrangements which in each case have a shuttle for a turning tool, which shuttle can be moved axially along its own longitudinal axis by means of an actuator so as to move said respective turning tool in a fast tool movement plane. 10. A machine according to claim 9, wherein the movements of the shuttles of the fast tool arrangements can be controlled independently of one another, so that the shuttles can be moved in opposite directions along their respective longitudinal axes. 11. A machine according to claim 2, wherein the cutting and turning units can be simultaneously loaded with spectacle lenses by means of a loading device. 12. A machine according to claim 11, wherein the loading device comprises a head which can be pivoted about a pivot axis from a position in which the head lies opposite to one selected from the group consisting of a working box and a conveyor belt for the spectacle lenses to a position into the working space of the machine and vice versa. 13. A machine according to claim 11, wherein the loading device comprises a head which has a plurality of suction cups for picking up and holding the spectacle lenses by means of a vacuum, which suction cups can be extended in the axial direction of the suction cups via cylinders and are arranged on a common rotating disk which rotates about a rotation axis. 14. A machine according to claim 13, wherein each of the cutting and turning units is assigned a respective workpiece spindle unit which comprises a workpiece spindle with a work piece rotation axis, wherein each workpiece spindle can be moved by means of a cross table arrangement transversely to the respective workpiece rotation axis into a transfer position in which the respective workpiece rotation axis is axially aligned with a longitudinal axis of a respective one of the cylinders of the head of the loading device which is positioned in the working space, whereupon the workpiece spindles can be moved by means of the cross table arrangements along the workpiece rotation axes in a direction of the head of the loading device in order to change the spectacle lenses. 15. A machine according to claim 2, wherein each of the cutting and turning units comprises at least one tool and a workpiece spindle unit by means of which the spectacle lens to be machined can be moved in at least one axis direction running transversely to a longitudinal axis of the respective tool, wherein the workpiece spindle units are arranged with respect to one another in such a way that said axis directions running transverse to said longitudinal axis are essentially perpendicular to one another.