Method to process spectacle lens blanks

A method for processing spectacle lens blanks (100) using equipment, the equipment comprising a workpiece turret (10) supported to be rotatable about a main axis of rotation (A), with at least two workpiece receptacles (21, 22, 23, 24, 25, 26) rotatably supported on said turret, each workpiece receptacle (21, 22, 23, 24, 25, 26) being fitted with a workpiece receiving surface (31, 32, 33, 34, 35, 36), said workpiece receiving surface (31, 32, 33, 34, 35, 36) having a concave or convex surface curvature (K1, K2, K3, K4, K5, K6), said workpiece receiving surface (31, 32, 33, 34, 35, 36) evincing a surface curvature, which is rotationally symmetrical about a spindle axis (A1, A2, A3, A4, A5, A6), wherein extents of the convex or concave surface curvatures (K1, K2, K3, K4, K5, K6) of the workpiece receiving surfaces (31, 32, 33, 34, 35, 36) are different from each other so as to receive lens blanks (100) with a receiving side (101) of different convex or concave surface curvatures (k1, k2, k3, k4, k5, k6) such that each received lens blank (100) is supported by the workpiece receiving surface (31, 32, 33, 34, 35, 36) during subsequent processing from the direction of the receiving side (101) not to be processed, where at least two blank models (T1, T2, T3, T4, T5, T6) of lens blanks (100) with a receiving side (101) of different concave or convex surface curvatures (k1, k2, k3, k4, k5, k6) may be selected, each workpiece receptacle (21, 22, 23, 24, 25, 26) fitted with a suction element (50), wherein each workpiece receptacle (21, 22, 23, 24, 25, 26) is configured to be driven into rotation about its spindle axis (A1, A2, A3, A4, A5, A6) separately from another workpiece receptacle, the method comprising the following steps:

• I. selecting one of the at least two blank models (T1, T2, T3, T4, T5, T6),
• II. selecting one of the workpiece receptacles (21, 22, 23, 24, 25, 26) having a workpiece receiving surface (31, 32, 33, 34, 35, 36) of which the concave or convex surface curvature (K1, K2, K3, K4, K5, K6) corresponds to the concave or convex surface curvature (k1, k2, k3, k4, k5, k6) of the receiving side (101) of the selected blank model (T1, T2, T3, T4, T5, T6),
• III. positioning the selected workpiece receptacle (21, 22, 23, 24, 25, 26) by rotating the workpiece turret (10) holding the workpiece receptacle (21, 22, 23, 24, 25, 26) about said turret's main axis of rotation (A),
• IV. loading a lens blank (100) of the selected blank model (T1, T2, T3, T4, T5, T6) Into the selected and positioned workpiece receptacle (21, 22, 23, 24, 25, 26),
• V. positioning the loaded lens blank (100) appropriately for an ensuing processing procedure (VI.1, VI.2, VI.3, VI.4, VI.5, VI.6) by rotating the workpiece turret (10) about its main axis of rotation (A), and
• VI. moving the lens blank (100) into a second operational zone (V2) of a lathe (70) fitted with an adjustable lathe chisel (71, 73) by rotating the workpiece turret (10) about its main axis of rotation (A).