Abstract: The invention relates to a chuck for flexible manufacturing, said chuck comprising a chuck body, a central draw head guided axially in a central hole of the chuck body and connected to inner jaws radially guided in the chuck body through a straight-wedge mechanism, and outer jaws also radially guided in the chuck body and adapted to be equipped with chuck jaws for chucking a work-piece and to be engaged with coupling heads through rack teeth. The coupling heads are built in the inner jaws and guided axially therein, wherein said coupling heads comprise a double locking coupling device. The first locking stage of said coupling device includes wedge-shaped control members fixed to a control ring, whereas the second locking stage includes an additional locking member directly connected to the control ring. The chuck body is in the form of a one-piece unit, wherein the control ring is encased by the chuck body and the rear centering disc so that the control ring can be rotated there-between.

Abstract: The invention relates to a chuck for flexible manufacturing, said chuck comprising a chuck body (1), a central drawhead (5) guided axially in a central hole of the chuck body (1) and connected to inner jaws (4) radially guided in the chuck body (1) through a straight-wedge mechanism, and outer jaws (7) also radially guided in the chuck body (1) and adapted to be equipped with chuck jaws for chucking a work-piece and to be engaged with coupling heads (5) through rack toothings (6). The coupling heads (5) are built in the inner jaws (4) and guided axially therein, wherein said coupling heads (5) comprise a double locking coupling device. The first locking stage of said coupling device includes wedge-shaped control members (10) fixed to a control ring (9), whereas the second locking stage includes an additional locking member directly connected to the control ring (9).

Abstract: The invention relates to a chuck with chuck jaws (2) which are guided in the chuck housing (1). Inner jaws (4) which can be coupled or uncoupled are assigned directly or indirectly to said chuck jaws via rack gears (3), whereby the inner jaws (4) are connected to a central pulling head (12) via a wedging mechanism. The pulling head is connected via a rod or hollow shaft (13), said rod or hollow shaft being guided in a central bore of the main spindle (25), to the piston of a hydraulic cylinder arranged on the rear part of the main spindle (25).