摘要 |
An apparatus (10) is disclosed for releasably holding a toolholder shank (30 ) having a lockable surface (90, 95) and a releasable surface (185) utilizing an actuating bolt (20) with an associated threaded actuating nut (75). When the actuating bolt (20) is rotated in a locking direction, the actuating nut (75 ) is drawn onto the bolt (20) thereby clamping against the lockable surfaces (90, 95) of the toolholder shank (30). When the actuating bolt (20) is rotat ed in the releasing direction, a releasing segment (170) acts upon the toolhold er (25) thereby ejecting it from the tool support member (15). |