Membrane chuck with dogs driven by membrane via dog carrier, with extension pieces on dogs in recesses of counterweights

摘要

The chuck (1) has dogs (3) driven via dog carriers (6) by a deformable membrane (4). It has counterweights (8) in the chuck body (2). The dogs have axial extension pieces (23) held in the counterweights. The dogs can be locked with the quick-grip devices (31) engaging in the extension pieces, together with the dog carriers, the membrane and the counterweights.