A workpiece is conveyed from a first fixed point to a second fixed point by a conveyor in a chucked state. A phase of the workpiece that is being conveyed by the conveyor is detected by a detector. The workpiece conveyed to the second fixed point by the conveyor is seated on a seating part. A workpiece seating phase of the seating part is adjusted by an adjustor to the phase of the workpiece detected by the detector.

A workpiece is conveyed from a first fixed point to a second fixed point by a conveyor in a chucked state. A phase of the workpiece that is being conveyed by the conveyor is detected by a detector. The workpiece conveyed to the second fixed point by the conveyor is seated on a seating part. A workpiece seating phase of the seating part is adjusted by an adjustor to the phase of the workpiece detected by the detector.

A chuck for a machine tool having a rotation spindle with a main axis of rotation. The chuck comprises a base plate, a first rotatable plate eccentrically mounted on the base plate, a second rotatable plate eccentrically mounted on the first rotatable plate, balancing means for aligning a principal axis of inertia of the chuck with the main axis of rotation and a holding mechanism. The chuck is provided with an actuating mechanism for angularly displacing the first rotatable plate around a first rotation axis over a first angle of rotation and/or the second rotatable plate around a second rotation axis over a second angle of rotation such that the position of the object with respect to the main axis of rotation can be altered.

A chuck for a machine tool having a rotation spindle with a main axis of rotation. The chuck comprises a base plate, a first rotatable plate eccentrically mounted on the base plate, a second rotatable plate eccentrically mounted on the first rotatable plate, balancing means for aligning a principal axis of inertia of the chuck with the main axis of rotation and a holding mechanism. The chuck is provided with an actuating mechanism for angularly displacing the first rotatable plate around a first rotation axis over a first angle of rotation and/or the second rotatable plate around a second rotation axis over a second angle of rotation such that the position of the object with respect to the main axis of rotation can be altered.

Methods for making ophthalmic lenses are generally discussed herein with particular discussions extended to plastic injection molded ophthalmic lens molds that are machined or lens buttons located on the injection molds that are machined. The machine process can include setting a lens axis of the ophthalmic lens and machining a ballast that is aligned to a major axis of a toric zone.

Methods for making ophthalmic lenses are generally discussed herein with particular discussions extended to plastic injection molded ophthalmic lens molds that are machined or lens buttons located on the injection molds that are machined. The machine process can include setting a lens axis of the ophthalmic lens and machining a ballast that is aligned to a major axis of a toric zone.

Disclosed is a device for aligning a workpiece in a mass-centering device, in which in an initial position an upper flange (1) and a lower flange (2) are arranged concentrically around an axis (3) of a balancing spindle of the mass-centering device, with the upper flange (1) comprising an interface (4) for clamping means to clamp the workpiece, and the lower flange (2) an interface (5) for fastening means to fasten the device to the balancing spindle. At least two spring elements (22, 23) reside between the upper and the lower flange (1, 2), such that in the initial position the upper flange (1) takes support axially and radially exclusively on the two spring elements (22, 23). In the initial position, the upper flange (1) is movable relative to the lower flange (2) into an eccentric position by a force acting in opposition to the spring elements (22, 23). A displacement device comprising a compression spring (9) and a piston (13) is arranged between the upper and the lower flange (1, 2) such that in a clamping position the piston (13) is movable, by the force of the compression spring (9), into engagement with a supporting element (20) of a fastening element (21) of the upper flange (1), so that the piston (13) enables the upper flange (1) to be clamped against the lower flange (2) and to be arrested in the eccentric position.

Disclosed is a device for aligning a workpiece in a mass-centering device, in which in an initial position an upper flange (1) and a lower flange (2) are arranged concentrically around an axis (3) of a balancing spindle of the mass-centering device, with the upper flange (1) comprising an interface (4) for clamping means to clamp the workpiece, and the lower flange (2) an interface (5) for fastening means to fasten the device to the balancing spindle. At least two spring elements (22, 23) reside between the upper and the lower flange (1, 2), such that in the initial position the upper flange (1) takes support axially and radially exclusively on the two spring elements (22, 23). In the initial position, the upper flange (1) is movable relative to the lower flange (2) into an eccentric position by a force acting in opposition to the spring elements (22, 23). A displacement device comprising a compression spring (9) and a piston (13) is arranged between the upper and the lower flange (1, 2) such that in a clamping position the piston (13) is movable, by the force of the compression spring (9), into engagement with a supporting element (20) of a fastening element (21) of the upper flange (1), so that the piston (13) enables the upper flange (1) to be clamped against the lower flange (2) and to be arrested in the eccentric position.

An actuator for use with a power tool is disclosed. The power tool includes a spindle-chuck body defining a tool axis and a collet nut surrounding the tool axis and rotatable about the tool axis. The collet nut is coupled to the spindle-chuck body. The actuator comprises a holder positionable to engage the spindle-chuck body and an actuation assembly including a first member positioned to engage the collet nut when the holder engages the spindle-chuck body and a second member operatively coupled to the first member to rotate the first member about a first axis. The second member is rotatable about a second axis non-parallel to the first axis.

An actuator for use with a power tool is disclosed. The power tool includes a spindle-chuck body defining a tool axis and a collet nut surrounding the tool axis and rotatable about the tool axis. The collet nut is coupled to the spindle-chuck body. The actuator comprises a holder positionable to engage the spindle-chuck body and an actuation assembly including a first member positioned to engage the collet nut when the holder engages the spindle-chuck body and a second member operatively coupled to the first member to rotate the first member about a first axis. The second member is rotatable about a second axis non-parallel to the first axis.