| 摘要 |
A rotatable tool-holder turret for lathes, work-centres and the like, comprises a stationary base body (1) with a cavity (5) which extends along a longitudinal axis (X-X), a tool-holder table (8) rotatable relative to the stationary base body (1), an element (16) with teeth (15) for locking and releasing the rotatable table (8) relative to the stationary body (1), drive means for moving the table between working positions spaced angularly around the longitudinal axis, as well as cylinder-piston means operating with compressed air for moving the locking and release element (16) axially. The turret includes a mechanism for amplifying the axial thrust generated by preloaded springs (34), the mechanism holding the locking element (6) mechanically in the position in which the turret is locked, by means of a plurality of balls (39) which are movable radially relative to the longitudinal axis (X-X) of the turret and can be inserted between and released from facing walls (41, 42, 43), including at least one conical wall, of the locking element (6) and of a second, stationary tubular element (13). <IMAGE> |
