| 摘要 |
<p>The invention refers to a machining method for an eyeglass lens blank (1) in which a bock piece (2) is connected, by way of a connecting material (3), to a first side (1.1) of the eyeglass lens blank (1) for holding and supporting the eyeglass lens blank (1) in a processing machine, wherein to this end a cavity (5) is made between the block piece (2) and the first side (1.1), at least using a sealing or supporting means (4), wherein the sealing or supporting means (4) has an inner diameter Dd, Ds and sits against the first side (1.1) in a sealing manner, the connecting material (3) is filled into the cavity (5) or connecting material (3) is provided in the cavity (5) and then the connecting material (3) is cured, the eyeglass lens blank (1) is placed into a milling and/or turning or grinding machine by way of the block piece (2) cast on by way of the connecting material (3), wherein the eyeglass lens blank (1) is supported on the first side (1.1) by the connecting material (3) across a diameter Dv that corresponds to the diameter Dd, Ds and wherein the blank (1) and the connecting material (3) are worked off in one of the following machining processes. The invention further relates to an eyeglass lens blank (1) having a diameter Dr, said blank being fastened to a block piece (2) through the cast-on connecting material (3), wherein the connecting material (3) 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.</p> |
