CHUCK FOR FLEXIBLE MANUFACTURING

摘要

The invention relates to a chuck for flexible manufacturing, said chuck comprising a chuck body (1) , a central drawhead (2) 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) . According 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) . According to the invention, the chuck body (1) is in the form of a one-piece unit, wherein the control ring (9) is encased by the chuck body (1) and the rear centring disc (12) so that the control ring (9) can be rotated therebetween, and the locking member of the second locking stage is in the form of a cylindrical stud-shaped lock (11) guided in an axial hole (35) of the control ring (9) , said lock (11) being connected, in its locked state, through its front surface, to an axially guided push-rod (15) , wherein said push-rod (15) is arranged in an entirely closed hole of the chuck body (1) .