B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 29/04 (2006.01) B23B 31/107 (2006.01) B25B 23/00 (2006.01) F16B 13/08 (2006.01) F16B 39/02 (2006.01) F16B 39/28 (2006.01) F16B 21/02 (2006.01)
Patent
CA 2170041
The present invention entails a self-locking mechanism (10) for locking a rotatable member such as screw, bolt, lock rod, etc. In the case of a lock rod (50) that secures a tool holder (126) within a tool block (122), the self-locking mechanism (10) of the present invention includes at least one cam surface (52) connected between the lock rod (50) and a rotating carrier (14) having at least one wedge surface (26). The rotating carrier (14), wedge surface (26), and cam surface (52) are shaped and disposed such that they can be rotated by a driver (16) in unison as the lock rod (50) is rotated between locked and unlocked positions. However, the rotating carrier (14), wedge surface (26) and cam surface (52) are disposed and shaped such that the cam surface (52) and wedge surface (26) will, under the influence of the lock rod, move to a wedged self-locking position after the lock rod (50) has assumed a locked position. The driver (16) is designed with respect to the rotating carrier (14), wedge surface (26), and cam surface (52) such that the driver (16) will rotate the cam surface (52) and wedge surface (26) with respect to each other such that they are moved from a wedged locked position and thereafter the rotating carrier (14), wedge surface (26), and cam surface (52) can be rotated in unison as the lock rod (50) itself is rotated from the locked position to the unlocked position.
Cette invention concerne un mécanisme à blocage automatique (10) utilisé pour verrouiller un élément rotatif tel qu'une vis, un boulon, une tige de verrouillage, etc. S'il s'agit d'une tige de verrouillage (50) qui fixe un porte-outil (126) dans un bloc outil (122) le mécanisme à blocage automatique (10) de cette invention comprend au moins une surface de came (52) qui est connectée entre la tige de verrouillage (50) et un support rotatif (14) comportant au moins une surface de coin (26). Le support rotatif (14), la surface de coin (26) et la surface de came (52) sont configurés et disposés de sorte qu'un dispositif d'entraînement (16) les fasse tourner ensemble lorsque la tige de verrouillage (50) tourne entre les positions verrouillée et déverrouillée. Cependant, le support rotatif (14), la surface de coin (26) et la surface de came (52) sont disposés et configurés de sorte que les surfaces de came et de coin (52, 26) se déplacent, sous l'influence de la tige de verrouillage, en position autoverrouillée coincée lorsque ladite tige de verrouillage (50) se trouve en position verrouillée. Le dispositif (16) est conçu par rapport au support rotatif (14), à la surface de coin (26) et à la surface de came (52) de manière à qu'il (16) fasse tourner la surface de came (52) et la surface de coin (26) l'une par rapport à l'autre afin qu'elles soient dégagées de la position verrouillée coincée et que le support rotatif (14), la surface de coin (26) et la surface de came (52) puissent ensuite être tournés ensemble lorsque la tige de verrouillage (50) est elle-même tournée et passe de la position verrouillée à la position déverrouillée.
Kennametal Inc.
Smart & Biggar
LandOfFree
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