Chucking device

A chucking device, in particular for workpieces that are to be machined on more than one side, having:

• a workpiece carrier (1),
• at least one turret (11), arranged to receive workpieces, which is supported, rotatably about an axis of rotation (12), on the workpiece carrier (1),
• a positive-engagement locking device, associated with the turret (11), on the workpiece carrier, by which locking device the turret (11) can be locked positionally precisely in a predetermined rotary angle position relative to the workpiece carrier (1), wherein the locking device has the following:
• at least three locking parts (13, 47, 46) coaxial to one another, of which a first locking part (13) is solidly connected to the turret (11) and a second locking part (46) is solidly connected to the workpiece carrier (1), and at least one third locking part (47) is disposed between the first locking part (13) and the second locking part (46) and is supported rotatably relative to the workpiece carrier (1), and all the locking parts, on the plane faces facing one another, each carry pairs of cooperating locking means (45, 53;
• 46a, 54), which can be brought into and out of engagement with one another by means of an axial relative motion of the locking parts;
• actuating means, in order to bring the locking means of the locking parts selectively into and out of engagement in such a way that the at least one third locking part (47), via its locking means, always remains locked with at least one locking part adjacent to it;
• and
• a drive device, which is coupled to the turret (11) and by which the turret is rotatable by a predetermined angular value about its axis of rotation (12) when the locking means are released.